2024-03-28T14:35:43Z
http://pen.ius.edu.ba/index.php/pen/oai
oai:ojs.pen.ius.edu.ba:article/129
2019-12-31T08:14:15Z
pen:ART
cam 3u
"171018 2017 eng "
dc
Determination of appropriate axial vibration dampers for a naval vessel driven by CODAG propulsion
Gokturk, Abdullah; Istanbul Technical University
Ozsoysal, Osman Azmi
Naval Architecture, Marine Engineering, Mechanical Engineering
Axial dampers, vibration, naval vessel, codag propulsion
The objective of this study is to reduce the vibration oscillations on a naval vessel propulsion system driven by CODAG. Within vibration analysis of the system firstly; physical model of the naval ship’s propulsion system consist of mass, spring and damping elements developed properly and the effects of dynamic forces, which are consisted of main engine stresses, and the hydrodynamic forces that come from water effect are also taken into consideration. Afterwards, equation of motions derived for each mass and consequently by solving these equations, employing matrix approach, natural frequencies and modes of the axial vibration obtained. Finally, a model for propulsion system formed in Matlab/Simulink program. The axial vibrations caused by internal and external forces that excite the system examined and illustrated with graphs how the model respond in the face of undamped and under different axial damping ratios. Then which is also our goal; axial damping ratios that can absorb vibrational motions of the system successfully determined.
International University of Sarajevo
2017-10-26 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/129
Periodicals of Engineering and Natural Sciences; Vol 5, No 3 (2017)
en
Copyright (c) 2017 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/3324
2022-11-29T15:57:48Z
pen:ART
cam 3u
"221031 2022 eng "
dc
The adoption of green management in Iraqi construction industry: The challenges and benefits
Raoof Mahjoob, Ahmed Mohammed; Baghdad University, Engineering College, Department of Civil Engineering, Baghdad, Iraq
Burhan, Abbas M.; Baghdad University, Engineering College, Department of Civil Engineering, Baghdad, Iraq
Ibraheem, Rehab Abdul Razzaq; Ministry of Education, General Directorate of Education in Baghdad, Rusafa II / Division of School Buildings, Baghdad, Iraq
Al-Juboori, Omar Akrm; Baghdad University, Science College, Unite of Reconstruction and Projects, Baghdad, Iraq
Rashid, Hatim A.; Engineering College, Department of Civil Engineering, University of Al-Nahrain, Baghdad, Iraq
GM, Construction industry, Motivations, AHP
Working locally acting Globally is the essential principle in the modern world, to achieve this principle all the countries should work together to protect the Natural environment and the ecosystem. The protection methods and procedures were developed and adapted to suit all fields of the life specially the industry fields, green management (GM) considered one of the important methods for this purpose because it provides the bases for environmental conservation. Industry of construction shares a high percentage of the world economy as well as adverse influence on the environment as natural. The current work paper tries to set the challenges and benefits of adopting the GM in Iraqi industry of construction throughout exploring the important aspects (main and sub aspects) that affect the applications of the GM as well as the motivation aspects. To achieve this goal a review of literatures was performed to collect the influencing aspects, then these aspects were evaluated by the experts using questionnaire survey and the questionnaire results were analyzed utilizing Process of Analytical Hierarchy (AHP). The results revealed that the main aspects are the financial aspects and the Project-related and technical aspects with 23% and 19% of important respectively. Accordingly, the conclusions were extracted with a set of recommendations which mainly state the important role of the Iraqi government in the application of GM in the industry of construction.
International University of Sarajevo
2022-09-16 12:50:44
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3324
Periodicals of Engineering and Natural Sciences; Vol 10, No 5 (2022)
en
Copyright (c) 2022 Ahmed Mohammed Raoof Mahjoob, Abbas M. Burhan, Rehab Abdul Razzaq Ibraheem, Omar Akrm Al-Juboori, Hatim A. Rashid
oai:ojs.pen.ius.edu.ba:article/3819
2023-11-08T10:21:58Z
pen:ART
cam 3u
"231002 2023 eng "
dc
The impact of internal control on employees' performance in small and medium-sized enterprises: The moderating role of accounting information systems (case study: Iraq)
Kachi, Jnan Abed
Foroghi, Daruosh
Dastjerdi, Alireza Rahrovi
Internal control is a critical strategy employed by organizations to enhance efficiency and operational effectiveness. Accounting information systems (AIS) also serve as valuable tools for acquiring necessary information to evaluate the performance of both managers and employees. This study examines the impact of internal control on employees' performance in small and medium-sized enterprises (SMEs) in Iraq, with a particular focus on the moderating role of accounting information systems (AIS). Questionnaires were distributed among SMEs in Iraq, and data from 198 responses were analyzed using structural equation modeling (SEM). The findings indicate that internal control has a positive and significant influence on employees' performance in Iraqi SMEs. Furthermore, the utilization of information systems contributes to improved employee performance. However, the study did not find evidence of AIS moderating the relationship between internal control and employees' performance. Based on these findings, it can be concluded that in the economic context of Iraq, particularly within SMEs, internal control plays a crucial role in enhancing efficiency and improving employees' performance. Additionally, information systems have the potential to make a substantial impact in this domain. Nevertheless, it is imperative for these systems to be regularly updated and upgraded to effectively influence all departments and components within an organization. This research contributes to the understanding of internal control and information systems in SMEs in Iraq, which can aid similar organizations in developing economies.
International University of Sarajevo
2023-10-02 17:09:03
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3819
Periodicals of Engineering and Natural Sciences; Vol 11, No 5 (2023)
en
Copyright (c) 2023 Jnan Abed Kachi, Daruosh Foroghi, Alireza Rahrovi Dastjerdi
oai:ojs.pen.ius.edu.ba:article/2353
2022-02-21T17:46:04Z
pen:ART
cam 3u
"211005 2021 eng "
dc
Data retrieval based on the smart contract within the blockchain
Kamal, Zainab Ali
Fareed, Rana
Blockchain technology appears to be the ideal solution for storing data in a transparent and decentralized manner. It also allows open access to data and enhances its immutable nature. This technology has helped prove its usefulness in several industries so far, however, distributed ledger technology does not work as a pure database. Therefore, some problems occur in accessing data. Querying data in the blockchain leads to performance and bandwidth problems. This primarily occurs because the blockchain does not have a primary query language, unlike regular databases. The distributed nature of the blockchain is in this case an obstacle. In this paper, a safe and fast method will be proposed to retrieve consistent data from the blockchain-based on the smart contract that will be opened after completing the transaction procedures. All nodes will sign the proposed transaction (by adding a special hash to each node resulting from the transaction information and node data). Upon completion of Transaction procedures, A smart contract will be opened (in which a QR is placed) resulting from converting the signatures in the transaction to QR When the smart contract data is retrieved, the QR for each transaction will be used All node signatures and transaction data will be extracted. The data will be retrieved by the QR generated for each transaction after it is stored in all nodes servers participating in the system. A new method was proposed to generate a hash for each node present in the system. The proposed method was tested in terms of time and complexity, and the algorithm was statistically analyzed, and all the results proved successful.
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2353
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Zainab Ali Kamal, Rana Fareed
oai:ojs.pen.ius.edu.ba:article/2744
2023-07-07T15:32:00Z
pen:ART
cam 3u
"220217 2022 eng "
dc
Increasing production of various garlic local cultivars in off season by gliocompost
, et al., Meksy Dianawati
Garlic in off season will be faced low production with poor quality tubers. Gliocompost which contains active ingredients of gliocladium can function as a biocontrol and biofertilizer. The aim of this research was to increase the bulb production of various cultivars of garlic in off season by using gliocompost. The research was conducted in Cianjur Regency, West Java, Indonesia, with an altitude of 1,320 m above sea level from August 2018 to January 2019 at -6.75908, 107.02897, 1334, 318. The research used a factorial randomized block design with two factors. The first factor of garlic cultivar consisted of five cultivars, namely Lumbu Putih (LP), Lumbu Kuning (LK), Lumbu Hijau (LH), Tawangmangu Baru (TB), and Sangga Sembalun (SS). The second was gliocompost, namely with and without gliocompost with six replications. Gliocompost application was given before planting at a dose of 5 kg per 200 kg of manure for 1 ha. The data observed were shoot emergence (%), plant height (cm), bulb diameter (cm), yield per ha (ton), yield per plot (ton), live plants (%), and production gap (%). Data were analyzed by analysis of variance and if there was a significant difference, then it was followed by the Duncan test at the 95% confidence level. Heatmap analysis was performed using the R Studio program. The results showed that the use of gliocompost did not affect the yield per ha of LK and SS, but it could increase yield per ha of LH, TB, and LB, increase yield per plot and decrease percentage of production gap of LP. Gliocompost increased bulb diameter. LP had a higher bulb diameter and percentage of live plants than LK.
International University of Sarajevo
2021-12-26 21:58:18
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2744
Periodicals of Engineering and Natural Sciences; Vol 10, No 1 (2022)
en
Copyright (c) 2022 Meksy Dianawati , et al.
oai:ojs.pen.ius.edu.ba:article/1742
2020-12-21T11:35:44Z
pen:ART
cam 3u
"201214 2020 eng "
dc
Mechanisms of safeguarding urban heritage at risk - Mosul Heritage as case study
Al Ani, Mohammed Qasim Abdul Ghafoor; Asst. Prof. at Al Nahrain University -Collage of Engineering - Architectural Department - Baghdad, Iraq
Architecture, Urban design, Heritage conservation, Urban planning
Preservation Methods; Iraqi heritage; Heritage at risk; Architecture; Urban Heritage.
Preservation of the cultural heritage of Mesopotamia civilization and the Iraqi architecture, especially urban heritage, is a national responsibility, and a wealth worthy of protection and attention. This national and international wealth is the responsibility of all organization and specialists in the world, and must be sustained for the future generations. This heritage is exposed to many dangers, and requires quick intervention to save it. So, the research problem appears from un ability of Iraqi decision makers to conserve this traditional heritage, which is under a grave danger, it is a threat throughout Iraqi historical cities by the forces of war, terrorism, globalization, poor knowledge, Uncontrolled investment, weak of experience and modernization on the cultural premises and building development which will eventually leads to blur local identity. So, research aim is to produce working mechanism to preserve the local Iraqi urban heritage, and specially Al Mosul heritage which ruthlessly destroyed, and activate the possibility of benefiting from it, endeavour to stop wasting heritage stocks, distorting its originality, and integrated efforts between all relevant institutions with local and international partnerships in order to conserve it. As well as the benefits from mechanisms of preservation methods which applied in international experience, to be adopted in local experience. In order to reach a roadmap, it will save Iraqi heritage and local identity from extinction.
International University of Sarajevo
2020-10-02 11:04:11
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1742
Periodicals of Engineering and Natural Sciences; Vol 8, No 4 (2020)
en
http://pen.ius.edu.ba/index.php/pen/article/download/1742/4214
Copyright (c) 2020 Mohammed Qasim Abdul Ghafoor Al Ani
oai:ojs.pen.ius.edu.ba:article/535
2019-08-03T15:29:33Z
pen:ART
cam 3u
"181124 2018 eng "
dc
Single solar cell ideality factor determination using a fixed point method
Traiki, Ghizlane
Ouajji, Hassan
Bifadene, Abdel Kader
Bouattane, Omar
The modeling and extraction of solar cell parameters are the crucial steps for simulating and optimizing the photovoltaic systems to meet specific properties. These parameters are directly related to the current-voltage characteristic of the solar cell under illumination, the latter is generally represented, by an equivalent electrical circuit whose parameters (the shunt resistance, the saturation current, the series resistance and the ideality factor of the diode) have been the subject of several researches. This paper describes an iterative algorithm based on fixed point method to calculate the ideality factor of a photovoltaic cell. The procedure uses the electrical and mathematical equations governing the solar cell behavior. The obtained results were compared to the previous works to show its effeteness.
International University of Sarajevo
2018-10-19 11:55:12
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/535
Periodicals of Engineering and Natural Sciences; Vol 6, No 2 (2018)
en
Copyright (c) 2019 ghizlane Traiki, hassan ouajji, abdel kader bifadene, omar bouattane
oai:ojs.pen.ius.edu.ba:article/2046
2021-07-01T08:16:20Z
pen:ART
cam 3u
"210618 2021 eng "
dc
Quadtree partitioning scheme of color image based
K. AL-Khafaji, Ghadah
H. Rasheed, Mohammed
M. Salih, Omar
Image segmentation is an essential complementary process in digital image processing and computer vision, but mostly utilizes simple segmentation techniques, such as fixed partitioning scheme and global thresholding techniques due to their simplicity and popularity, in spite of their inefficiency. This paper introduces a new split-merge segmentation process for a quadtree scheme of colour images, based on exploiting the spatial and spectral information embedded within the bands and between bands, respectively. The results show that this technique is efficient in terms of quality of segmentation and time, which can be used in standard techniques as alternative to a fixed partitioning scheme.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2046
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) 2021 Ghadah K. AL-Khafaji, Mohammed H. Rasheed, Omar M. Salih
oai:ojs.pen.ius.edu.ba:article/825
2020-09-18T14:27:32Z
pen:ART
cam 3u
"191115 2019 eng "
dc
Lumbar-load analysis of a soldier while carrying the heavy loads
Burak, Senad; University of Sarajevo
Faculty of Mechanical Engineering
Veljovic, Fikret
Begic, Edin
Jahic, Dzenan
Kadic, Faris
Iglica, Amer
Background: The aim of the article was to create an appropriate computer model based on the real status of the mortar operator's workplace and to analyze the workplace. After that, for any possible exceedances from the aspect of the organism's load and safety, the aim is to redesign the workplace and bring it within the limits of the permissible load, and therefore the required safety. The aim is also to identify the characteristic work movements performed by the soldier and to carry out an ergonomic analysis of the soldier's efforts and to propose appropriate improvements.
Methods: The analysis is performed on a total of 20 soldiers, from which is determined an average model of the following characteristics: 180 cm in height and 85 kg in weight. The task is to take a mine from the shell containing the mines, then transfer it to the mortar and fill the mortar barrel. The weight of the 120 mm mortar grenade is 14.8 kg. The average soldier is 26 years old and his military exercise lasts 4 hours. The CATIA software package (Dassault Systèmes, Vélizy-Villacoublay, France) is used for analysis. By knowing the anthropometric and work environment data, with ergonomic design and analysis, the following analyses were made: biomechanical analysis, rapid upper limb assessment (RULA) and carry analysis (option from CATIA software).
Results: The proposed modification of the position resulted in a decrease in the L4/L5 torque from 316 Nm to 154 Nm along with decreasing of the compression force on the L4/ L5 from 5779 N to 3038 N (the compression force allowed is 3400 N), and while the RULA analysis is from the red color position 1 (score 7; maximum load requiring rapid repositioning of such position), revised final score 4 made in yellow (a solution acceptable for this work place).
Conclusions: By ergonomic analysis, obtained proposal will lead to less chance of injury, prevention of burn out syndrome, fewer chances of illness, decreasing the fatigue, greater safety, less energy spent and better preparedness for all necessary tasks.
International University of Sarajevo
2019-11-12 18:27:21
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/825
Periodicals of Engineering and Natural Sciences; Vol 7, No 4 (2019)
en
Copyright (c) 2019 Senad Burak
oai:ojs.pen.ius.edu.ba:article/1441
2020-08-08T14:48:11Z
pen:ART
cam 3u
"200630 2020 eng "
dc
Applied multivariate analysis of variance in experiment of randomized design
Sadik, Nazik J.
Alwan, Iqbal M.
The general aim of an experimental design in this paper was to estimate the different treatments effects on the responses by statistical methods. The estimates must be averting biases and the random errors minimized as much as possible. We used multivariate analysis of variance (MANOVA) to analyze design of experiments for several responses. In this paper, we provided three fertilizers (mineral, humic, micro-elements) applied on Yellow Maize experiment. This experiment was conducted by completely randomized design (CRD). We tested four responses (Chlorophyll in paper, total ton / ha, paper area / cm2 and plant height / cm) together to find significant test between them. The partial correlations are between Chlorophyll in paper and total ton of 0.77727. The difference between first fertilizers (mineral) and 3rd fertilizers (micro-elements) are significantly different for the total ton.
International University of Sarajevo
2020-01-14 19:11:08
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1441
Periodicals of Engineering and Natural Sciences; Vol 8, No 1 (2020)
en
Copyright (c) 2020 Nazik J. Sadik, Iqbal M. Alwan
oai:ojs.pen.ius.edu.ba:article/149
2019-12-30T14:17:05Z
pen:ART
cam 3u
"180613 2018 eng "
dc
The protection of marine aquatic life: Green Port (EcoPort) model inspired by Green Port concept in selected ports from Turkey, Europe and the USA
Satır, Tanzer; Istanbul Technical University
Doğan-Sağlamtimur, Neslihan; Niğde Ömer Halisdemir University
Maritime Transportation and Management Engineering, Environmental Engineering
Ecoport, Aquatic environment, Green port, Marine pollution, Port model
Ecological Port, also known as Green Port (EcoPort), is an important development strategy protecting marine aquatic life and ecosystem. It provides business information on environmentally best practices and corporate responsibility centred around marine ports and terminals, including shipping, transport and logistics. Green Port concept gives a great opportunity to make transportation clean and efficient. Marine industry should adopt new legislations to create a clean future. It is the key point to implement strict liquid and solid waste policies and to begin to use low sulphur fuel and electric power whenever possible. Green Ports utilize electric powered cranes and they have strict garbage policies and well-educated personnel. Furthermore, the vessels entering Green Ports must have an accreditated waste management and bunkering plan. In this study, the implementation of the Green Port concept at some selected Turkish, European and the US Ports was given and a simple Green Port Model was prepared.
International University of Sarajevo
2018-02-27 19:04:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/149
Periodicals of Engineering and Natural Sciences; Vol 6, No 1 (2018)
en
Copyright (c) 2018 Tanzer Satır, Neslihan Doğan-Sağlamtimur
oai:ojs.pen.ius.edu.ba:article/524
2019-12-30T13:11:03Z
pen:ART
cam 3u
"181124 2018 eng "
dc
A crime prediction model based on spatial and temporal data
Ait El Bour, Hicham; Information Technology and Modeling Laboratory, Hassan II University, Casablanca, Morocco
Ounacer, Soumaya; Information Technology and Modeling Laboratory, Hassan II University, Casablanca, Morocco
Elghomari, Yassine; Information Technology and Modeling Laboratory, Hassan II University, Casablanca, Morocco
Jihal, Houda; Information Technology and Modeling Laboratory, Hassan II University, Casablanca, Morocco
Azzouazi, Mohamed; Information Technology and Modeling Laboratory, Hassan II University, Casablanca, Morocco
Compuer science
Big data; Crime prediction; Machine learning; Deep learning
In a world where data has become precious thanks to what we can do with it
like forecasting the future, the fight against crime can also benefit from this
technological trend. In this work, we propose a crime prediction model based
on historical data that we prepare and transform into spatiotemporal data by
crime type, for use in machine learning algorithms and then predict, with
maximum accuracy, the risk of having crimes in a spatiotemporal point in the
city. And in order to have a general model not related to a specific type of
crime, we have described our risk by a vector of n values that represent the
risks by type of crime.
International University of Sarajevo
2018-10-19 11:55:12
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/524
Periodicals of Engineering and Natural Sciences; Vol 6, No 2 (2018)
en
Copyright (c) 2019 HICHAM AIT EL BOUR, Soumia Ounacer, Yassine Elghomari, Houda Jihal, Mohamed Azzouazi
oai:ojs.pen.ius.edu.ba:article/3392
2023-01-23T17:20:45Z
pen:ART
cam 3u
"221231 2022 eng "
dc
Deformation behavior of flexible pavements by finite element simulation
Alwan, Duaa S.
Joni, Hasan H.
Hilal, Miami M.
Flexible pavement is usually designed based on certain axle load limits and climatic conditions. The Iraqi code has specified certain load limits per each axle type that should not be exceeded. However, many trucks violate these limits by carrying additional weights to decrease the transportation cost. These overweight trucks cause severe deterioration to the pavement and thus reduce its life. The Iraqi authorities generally charges the violating trucks a penalty based on their weights. This penalty could be very small compared to the damage occurring to the pavement based on these over weights. Also, some trucks may carry huge weights that the pavement may not support, so unloading such trucks could be a suitable solution rather than paying few amounts of money and deteriorating the pavement. The study aims at studying the effect of axle load increase, and the variation in pavement moduli, on the overall pavement life. It also aims to estimate the overweight truck limits that could be penalized or unloaded. The research uses the ABAQUS software conditions to estimate the tensile strains occurring under the asphalt concrete (AC) layer and the compressive strains above the subgrade surface. These computed strains are incorporated in the fatigue cracking and rutting models to estimate the pavement life for different axle weights. Results showed that violating trucks should be unloaded when their weights exceed certain limits.
International University of Sarajevo
2022-12-08 17:57:31
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3392
Periodicals of Engineering and Natural Sciences; Vol 10, No 6 (2022)
en
Copyright (c) 2022 Duaa S. Alwan, Hasan H. Joni, Miami M. Hilal
oai:ojs.pen.ius.edu.ba:article/2
2019-12-31T13:23:59Z
pen:ART
cam 3u
"141216 2014 eng "
dc
Entrepreneurship education (EEd) at bachelor level in developing countries
Selcuk, Sule
Gursel, Ali
<p><em>Entrepreneurship has been drawing attention of academia, business circles, policy makers and general public at an increasing rate as it is valued as an engine of economic developments. Although some argue that it can be learnt just by doing it, many types of EEd programs are being offered to high school students, university/college students and adults with various backgrounds and future plans. For efficient and effective EEd applications, various factors, such as local socio-economic conditions and degree of technological development in the country, need to be taken into consideration in tailoring EEd curricula and how to implement them. For example, EEd programs designed for developed countries need to be different from those for developing countries. This article focuses on EEd programs at higher education institutions in developing countries, for which entrepreneurship is a vital issue as it is one of the most effective tools for such countries to catch up with developed countries.</em></p>
International University of Sarajevo
2014-12-26 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2
Periodicals of Engineering and Natural Sciences; Vol 2, No 2 (2014)
en
Copyright (c) 2014 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/3934
2024-03-21T15:00:41Z
pen:ART
cam 3u
"240119 2024 eng "
dc
Optimizing the geometry of a cylindrical dielectric resonator antenna (CDRA) in combination with the design of a microstrip patch antenna to improve antenna efficiency.
Alateewe, Hussein Turki
Nagy, Szilvia
Keywords: Microstrip patch antenna, Slots, cylindrical CDRA antenna, Polarization, Gain, Radiation pattern, efficiency, CST program.
The primary objective of this study is to improve the efficiency of dielectric resonator antennas (DRAs) by the manipulation of their geometric and material characteristics. Two distinct cylindrical dielectric resonator antenna (DRA) with microstrip patch antenna designs chosen, and deliberate modifications implemented in a systematic manner to enhance crucial characteristics including gain, bandwidth, S-parameters, voltage standing wave ratio (VSWR), and directivity. Furthermore, an investigation conducted to assess the efficacy of incorporating additional layers into the design of the DRA in order to achieve increased gain and enhanced efficiency at a frequency of 28 GHz. The research encompassed the process of collecting and designing and simulating CDRA and microstrip patch antenna antennas utilizing the CST framework. The study investigates different configurations of apertures and alterations or holes in the patch geometry in order to improve both the gain and efficiency. A comparative analysis between both antennas carried out utilizing performance criteria such as S-parameters, gain, directivity, bandwidth, and VSWR and efficiency. The discourse explores the progress made in the field of technology pertaining to the improvement of gain and bandwidth. This includes the utilization of high-dielectric-constant materials, modifications in resonant frequencies, and the implementation of metamaterial (MTM) cells. The CST program utilized for conducting realistic trials and assessments. The research highlights the advantages of CDRA antennas and microstrip patch antennas, including improved radiation efficiency, smaller size, lower profile, and lightweight design. The integration of photonic crystal layers into the design of the cylindrical dielectric resonator antenna (CDRA) emphasized as a noteworthy enhancement, resulting in amplified gain. The significance of taking into account both intrinsic characteristics and external factors, such as surface Plasmon waves, in the computational modeling of DRA antennas to achieve maximum efficiency is emphasized by the research.
International University of Sarajevo
2024-01-22 18:21:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3934
Periodicals of Engineering and Natural Sciences; Vol 12, No 1 (2024)
en
Copyright (c) 2024 Hussein Turki Alateewe, Szilvia Nagy
oai:ojs.pen.ius.edu.ba:article/2402
2022-01-10T18:46:31Z
pen:ART
cam 3u
"211025 2021 eng "
dc
A novel of substitution-box design using PLL algorithms in magic cube
Zaki, Rana M.
Abdul Wahab, Hala Bahjat
In most modern symmetric ciphers, substitution boxes are non-linear core components that provide robust security and confusion. The construction of active S-boxes has been hot object among safely experts. The goal is at build a cryptographically active S-box, number of researchers have built an S-Box using RNA, DNA, chaotic systems, etc. In this article, we used new approach to generate multiple S-Boxes based on the Permutation of Last Layer algorithms (PLL) to replacement the place (permutation) of the pieces generated from the Magic Cube and instead of using static S-Boxes, we can generate dynamic S-Boxes to use various S-Boxes in every round to add to confusion. When comparing the proposed algorithm with other searches and tests on it. We found it has achieved a high percentage of success comparable to the S-Box from chaotic and etc. The proposed design passes S-Box test criteria effectively, these tests: invertibility, completeness, avalanche, strict avalanche, and balanced are among S-Box test criteria. The results of the analysis show that the novel S-Box overrun each of these statistical tests, has a good avalanche impact, and thus can protect against a wide range of attacks. Because S-Box and its reverse take but smaller milliseconds to construct it ability be applied in a variety of lightweight applications
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2402
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Authors
oai:ojs.pen.ius.edu.ba:article/2894
2023-10-13T09:54:47Z
pen:ART
cam 3u
"220408 2022 eng "
dc
Effect montmorillonite clay as aggregate in lightweight concrete cement-free
Shamsa, Mohammed H.
Al-Abdaly, Nadia M.; Najaf Technical Institute,
Al-Furat Al-Awsat Technical University,
Iraq, Najaf
Ahmed, Mohammed Ali
Al-Rammahi, Ali A.
Clay, Fly ash, Cement-free, Lightweight concrete, Density.
Light weight concrete has many advantages that can be used in the construction of buildings. Perhaps one of the most important of these features is its light weight, which contributes a lot to reducing stress on the soil, which provides the possibility of rising buildings and increasing the number of floors. In addition to its role in thermal insulation and its impact on reducing the consumption of energy sources in cooling and heating, light weight concrete is considered one of the sustainability factors in buildings. One of the second major factors in sustainability is to reduce or avoid the use of cement in the manufacture of this concrete, because of the harmful effects of cement on the environment and global warming. Cement-free concrete is considered a sustainable material in terms of its depletion of the waste materials and spin-off products from different industries apposite of consumption of natural resources in the cement industry (mud, limestone). In this research first aim is to produce lightweight cement-free concrete using pozolanic material and montmorillonite clay as coarse and fine aggregate. Studying some properties of producing light weight concrete (density, compression, tensile,) with different ages (7, 28, 56) days.
International University of Sarajevo
2022-02-21 18:58:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2894
Periodicals of Engineering and Natural Sciences; Vol 10, No 2 (2022)
en
Copyright (c) 2022 Authors
oai:ojs.pen.ius.edu.ba:article/1774
2021-06-30T09:23:39Z
pen:ART
cam 3u
"210126 2021 eng "
dc
COVID-19 detection based on deep learning and artificial bee colony
Sahan, Ali Mohammed
Al-Itbi, Ali Sami
Hameed, Jawad Sami
COVID-19 has become a great challenge to the whole world, as it has infected and killed millions of people and affected the different fields of our life due to its rapid ability to spread. In this paper, the COVID-19 patient's recognition technique utilized the deep learning, and An artificial bee colony is intended to be applied. Deep learning was implemented to provides the features from X-ray images, while the artificial bee colony algorithm used to refine these features by selecting the best features. The multilayer perceptron classifier has been utilized in the classification stage. The experiments carried out on the standard dataset with/without different other daises such as MERS, SARS, and ARDS as well as COVID-19(+) referred that the proposed work provided high recognition rates with high reduction in the number of deep learning features.
International University of Sarajevo
2021-01-29 01:40:21
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1774
Periodicals of Engineering and Natural Sciences; Vol 9, No 1 (2021)
en
Copyright (c) 2021 Ali Mohammed Sahan, Ali Sami Al-Itbi, Jawad Sami Hameed
oai:ojs.pen.ius.edu.ba:article/2079
2021-12-31T17:01:30Z
pen:ART
cam 3u
"210703 2021 eng "
dc
Comparison between VG-levy and Kernel function estimation with application
Mousa, Mariam Jumaah
Hmood, Munaf Yousif
Nori, Ali Ghena
In this article, we present the variance Gamma Levy model that was obtained from the Brownian motion Gamma with their parameter estimation methods (Maximum Likelihood (MLE) and method of moments (MME)). Then, we compare them with Kernel density function depending on MASE.
Our application concerned with the Apple company that is listed on the Nasdaq, their data are suitable for the VG-Levy model and achieved the proper conditions of Levy of stability and independence, which means that Apple company was efficient in providing the information to investors.
The aim of studying the price fluctuations through the parameters of the model and thus the possibility of knowing the trends of stock prices in the financial markets and the consequent risks associated with investing in them in a manner consistent with the investor's preferences regarding bearing a certain degree of risk in the sense of a pre-preparedness for the potential sacrifice of the investor's capital with the limits of risk resulting from those fluctuations in prices for the returns resulting from price movements in those markets., So it was found that the VG-levy model with MLE is the best.
International University of Sarajevo
2021-07-03 19:56:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2079
Periodicals of Engineering and Natural Sciences; Vol 9, No 3 (2021)
en
Copyright (c) 2021 Mariam Jumaah Mousa, Munaf Yousif Hmood, Ali Ghena Nori
oai:ojs.pen.ius.edu.ba:article/840
2020-09-18T14:27:33Z
pen:ART
cam 3u
"191211 2019 eng "
dc
Iraqi e-government and cloud computing development based on unified citizen identification
Abd, Thulfiqar
Mezaal, Yaqeen S.; Al-Esraa University College
Shareef, Mustafa Sahib
Khaleel, Shahad K.
Madhi, Hadi Hussein
Abdulkareem, Seevan F.
In this paper, besides an overview about e-government and cloud computing services in Iraq, an applied survey to establish relevant prospects of the Iraqi citizens for e-government and cloud computing services was adopted. Moreover, to study the potential putting into practice of e-Government and cloud computing services based on citizen identification in Iraq. Based on survey results, about 112 different e-Services were proposed by qualified Iraqi citizens. The requested e-Services were highlighted based on a provided statistical list in this paper. This paper can be an influential step to enhance e-Government and cloud computing functionaries in Iraq consistent with the citizen’s outlooks and discover technical and non- technical barriers that delay the development of Iraqi e-Government and cloud computing.
Lastly, the accomplishment of e-Government and cloud computing imposes several essential tools as in Information and Communication Technology (ICT). The development scheme in this paper involves three years to improve Iraqi e-Government database and offer advantageous capability of ICT to all responsible persons and citizens based on Standard Materials and International Certificates.
International University of Sarajevo
2019-11-12 18:27:21
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/840
Periodicals of Engineering and Natural Sciences; Vol 7, No 4 (2019)
en
Copyright (c) 2019 Yaqeen S. Mezaal
oai:ojs.pen.ius.edu.ba:article/1481
2020-09-28T16:48:51Z
pen:ART
cam 3u
"200717 2020 eng "
dc
Influence of national, organizational and relational contexts on the human resource function performance in Morocco
Elmortada, Asmaa; Cadi Ayad University
Chams Eddoha, Mokhlis; Hassan II university
Human resources function; Performance; Organizational performance; National context; Organizational context; Relational context; Human resources management
The relevance of the human resources function (HRF) is based on the performance of several management levels which call on different factors. In this article, we explain the influence of national, organizational and relational contexts on the effectiveness and the efficiency of human resources management (HRM) policies and practices.
International University of Sarajevo
2020-09-28 17:54:51
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1481
Periodicals of Engineering and Natural Sciences; Vol 8, No 3 (2020)
en
Copyright (c) 2020 Asmaa ELMORTADA, MOKHLIS Chams Eddoha
oai:ojs.pen.ius.edu.ba:article/188
2019-12-30T10:39:39Z
pen:ART
cam 3u
"181113 2018 eng "
dc
Semiautomatic detection of cardiac diseases employing dual tree complex wavelet transform
Prashar, Navdeep; Bahra University Shimla Hills
Sood, Meenakshi; JUIT Solan
Jain, Shruti; JUIT Solan
Electrocardiogram (ECG) contains lot of information which can be utilized for a mechanism to detect cardiac abnormalities. The ECG signal is too sensitive to various types of noises as it is of low frequency and has weak amplitude, these noises reduce the diagnostic accuracy and may lead to the incorrect decision of the clinician. So, denoising of ECG signal is an essential requirement for an accurate detection of Heart disease. In this paper, a Dual-Tree Complex Wavelet Transform technique (DTCWT) is presented to denoise the noisy ECG signal and to extract the Principal features followed by implementation of Peak Detection Algorithm. The performance is evaluated on the basis of performance metrics and an increase in SNR is achieved using the technique. With the proposed technique, calculated heart rate is in consensus with the gold standard of the various bench mark databases used and accurate heart disease was determined.
International University of Sarajevo
2018-10-19 11:55:12
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/188
Periodicals of Engineering and Natural Sciences; Vol 6, No 2 (2018)
en
Copyright (c) 2018 navdeep prashar, Meenakshi sood, Shruti Jain
oai:ojs.pen.ius.edu.ba:article/549
2020-09-18T14:28:23Z
pen:ART
cam 3u
"190724 2019 eng "
dc
A performance evaluation of transform domain algorithm in watermarking based on different levels of sub-bands of discrete wavelet transform
Aqel, Musbah Jumah; Cyprus International University
Umar, Aliyu; Cyprus International University
Agoyi, Mary; Cyprus International University
Wavelet transform Watermarking Singular value decompostion
This study proposed to evaluate the performance of transform domain algorithms in watermarking based on different level of sub bands of discrete wavelet transform (DWT) that can be used to overcome illegal copy, manipulation, distribution and reproduction of image on the network by implementing watermarking algorithm based on different levels that is low-level (LL), low- high (LH), high-low (HL), High-high (HH) and singular value decomposition (SVD) on image for their robustness, and imperceptibility. Moreover, two parameters were applied to evaluate the performance. That is, peak signal to noise ratio (PSNR) is used to measure imperceptibility of the digital image while normalize cross correlation (NCC) is applied to measure the robustness of digital image. The performance evaluations of the proposed method were implemented in MATLAB. The results showed that the described method imperceptible of HL level sub-bands than other levels of sub-bands. While the robustness is achieved by all levels sub-bands.
International University of Sarajevo
2019-06-27 21:31:19
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/549
Periodicals of Engineering and Natural Sciences; Vol 7, No 2 (2019)
en
Copyright (c) 2019 Musbah Jumah Aqel
oai:ojs.pen.ius.edu.ba:article/3436
2023-03-03T16:51:41Z
pen:ART
cam 3u
"230224 2023 eng "
dc
Employing auxiliary natural lighting systems within the elements of traditional buildings: A special study on employing one of the auxiliary lighting techniques within one of the elements of a mosque in the ancient urban fabric
Hadi Ubaid, Alaa; Department of Architecture, University of Babylon, Babylon - Iraq
Technological development is considered one of the most important influences that contributed to the change of some design elements (formal and functional), both or each. Among these elements is the minaret. This was evident in the old urban fabric, and because of the existence of other basic reasons in the traditional fabric, including the increase in the population of the weaving area, which led to the dispensation of the inner courtyard. It had changed from an element that has a shape and function to an element that has a shape only, to indicate the presence of a mosque this was evident in the old urban fabric .Due to the presence of other essential causes in the traditional fabric like the increase in population among the inhabitants of the fabric which led to neglecting the internal area , moreover climate change led to the use of window openings as outlets for air conditioning instruments ,the researcher employed the minaret to enable sunlight inter the inner space of the mosque (prayer space) due to the importance of natural sunlight effect on people's psychological and physiological health . This research was conducted in a clear sky of Babil province for latitude of (32.8) north, small samples were made measuring 1:20 for the minaret and the mosque space, a device for measuring the sunlight amount (Multi-Function Environment Meter 4IN1) was used . Results showed an increase in natural sunlight reflected inside the space of the mosque. This study came out with the following recommendations, the importance of employing the archeological elements which their functions were altered by technological growth to enhance the internal environment with the finding of solutions to the amount of harmony in distributing sunlight (distributing natural sunlight harmoniously )
International University of Sarajevo
2023-01-26 14:15:56
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3436
Periodicals of Engineering and Natural Sciences; Vol 11, No 1 (2023)
en
Copyright (c) 2023 Alaa Hadi Ubaid
oai:ojs.pen.ius.edu.ba:article/35
2019-12-31T13:38:32Z
pen:ART
cam 3u
"140331 2014 eng "
dc
Optimization of wear parameters of polyamide-6 composite materials filled with wollastonite particles
Çoban, Aslan; Sakarya University
Demirer, Ahmet; Sakarya University
Ficici, Ferit; Sakarya University
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</style> <![endif]--> <p class="MsoNormal" style="margin-top: 6pt; text-align: justify;"><em><span style="font-size: 11pt; letter-spacing: -0.1pt;">Weight loss and friction coefficient prediction models for polyamide-6 (PA-6) composites filler with 0,5 and 10 wt.% wollastonite (W) particles was developed<span> </span>using Taguchi method by considering the parameters of sliding speed,<span> </span>applied load<span> </span>and filler ratio. The wear behavior of the specimen was investigated using pin-on-disc arrangement where the samples sliding against a AISI 4140 steel disk under different conditions. The wear tests were realized at the sliding speeds of 1.0, 1.5 and 2.0 ms-1 and under the loads of 6, 10, and 20 N. The obtained weight loss for with 5 and 10 wt.% wollastonite (W) particles PA-6 composites are lower than pure PA-6 weight loss under the same test conditions. The orthogonal array, signal-to-noise ratio (S/N) and analysis of variance (ANOVA) were employed to study the optimal testing parameters on composite samples. The estimated S/N ratio using the optimal testing parameters for specific wear rate were calculated and a good agreement was observed between the predicted and actual weight loss for a confidence level of 90%.</span></em></p>
International University of Sarajevo
2014-03-31 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/35
Periodicals of Engineering and Natural Sciences; Vol 2, No 1 (2014)
Copyright (c) 2014 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/949
2019-12-26T17:52:04Z
pen:ART
oai:ojs.pen.ius.edu.ba:article/2239
2021-12-26T22:38:39Z
pen:ART
cam 3u
"211103 2021 eng "
dc
Documenting and implementing DevOps good practices with test automation and continuous deployment tools through software refinement
Pastrana Pardo, Manuel Alejandro
Ordoñez Erazo, Hugo Armando; Universidad del Cauca
Cobos Lozada, Carlos Alberto; Universidad del Cauca
Software engineering; Software Development
DevOps; SQA; Software Quality Assurance; Smart Campus; Software Engineering
The accelerated pace of life of companies in Colombia and the world, entails the need to obtain software developments with the highest quality, in the shortest possible time and with minimal reprocessing after it is put into production. Therefore, the use of good software development practices and their automation through tools is no longer a luxury for development teams today, but part of their way of working. Unfortunately, in Colombia many of these helps and forms of work are not widely used. This paper presents the documentation and implementation of preventive quality tools and good practices for software development that allow code versioning, continuous integration, automation of functional tests, static code analysis and continuous deployment.
Objective: Present the good practices implemented in the Smart Campus Ecosystem case study for software development.
Methodology or method: Good practices for software development based on XP and DevOps are reviewed. A set of tools is selected for implementation that has a direct impact on the quality of software development. These tools are used in the UNIAJC Smart campus ecosystem case study. The results of the implementation are documented in this article.
Results: The preventive quality model is exposed, put on test and the results are documented.
Conclusions: The preventive quality model helps to increase the results of quality assurance through the set of tools that provide development teams with key information for refinement and refactoring of source code within development runtime and no later than this stage.
International University of Sarajevo
Universidad del Cauca; Institución Universitaria Antonio José Camacho
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2239
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Authors
oai:ojs.pen.ius.edu.ba:article/2886
2023-10-13T09:54:49Z
pen:ART
cam 3u
"220420 2022 eng "
dc
The role of creative accounting in increasing the marketing of shares and their profits in the Iraqi stock exchange
AL-Khafaji, Ali Abbas Kareem
Mustafa, Rasha F.
Alsaalim, Faten Hasan Ali Jabr
As a result of creative accounting, many firms in the Iraqi stock market are able to achieve two very significant goals: first, to boost the market value of their shares and thus gain the biggest trading volume in shares, and second, to lower their earnings in order to decrease the tax burden. First by growing its profits, then by evading taxes and denying the state its right to its money. Using this research, we hope to demonstrate how financial institutions that use innovative accounting tools in the preparation of their financial statements impact trade activity. Trading volume is critical to accurately forecasting stock price patterns, allowing investors to maximize their wealth. So, without accounting information, the financial markets can't play their function in drawing in investment, ensuring a well-balanced use of resources, and making reasonable economic decisions, because they don't have the accounting knowledge to do so. There were four sections to the research, which included a look at the research methodology and previous studies, a look at creative accounting practices, and an analysis of the financial statements for the top and bottom ten companies in terms of trading volume using Miller's model to detect profit manipulation that occurred in those companies. The final section contained the most significant findings and recommendations.
International University of Sarajevo
2022-02-21 18:58:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2886
Periodicals of Engineering and Natural Sciences; Vol 10, No 2 (2022)
en
Copyright (c) 2022 Ali Abbas Kareem AL-Khafaji, Rasha F. Mustafa, Faten Hasan Ali Jabr Alsaalim
oai:ojs.pen.ius.edu.ba:article/1795
2021-06-30T09:24:04Z
pen:ART
cam 3u
"210221 2021 eng "
dc
An Improved Correlation to Investigate the Effect of Chemical Additives on the Mobility Ratio of Two-Phase Flow
Sulaiman, Izzat Niazi; Department of Petroleum Engineering,
University of Kirkuk,
Kirkuk, Iraq
Zeinalabideen, Mohammed Jawad
Abed, Adnan Ajam
World energy demand continues to increase, as they evolve, and developing countries consume more energy to keep their rising factories going. A significant portion of the energy demand is supplied by fossil fuels, especially crude oil. Therefore, in order to satisfy the world's energy demand, oil reserves and oil production capability must be increased. This objective can be accomplished by enhancing the recovery efficiency of the existing generating or mature reservoirs through the application of increased oil recovery. The injection of fluids into oil reservoirs has the purpose of supplementing natural energy and is used in some cases to engage with the reservoir's rock/oil system, standardizing for oil recovery, such as lower interfacial stress, oil swelling, reduction of oil viscosity and adjustment of wettability.
Subject to comprehensive studies, in heavy oil reservoirs, polymer injection is not dependent on large technological instruments, requiring only mixing and filtration equipment, except for those already used for traditional water injections. In addition, polymers are non-toxic and corrosive and can produce desirable mobility ratios. The implementation of this approach decreases the output ratio of water to oil, thus decreasing operating.
In the present work, thirty-five data points from experimental work had been investigated to develop a new correlation for viscosity of water by using the suitable program. It was analyzed the influence of the polymer additives on the mobility ratio, temperature and concentration effect on mobility ratio, and viscosity altering with the additives have been investigated. The results of the correlation showed acceptable agreement between the observed and predicted viscosity values. As a contrast to the polymer
additives approach, pure water was proposed.
International University of Sarajevo
2021-01-29 01:40:21
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1795
Periodicals of Engineering and Natural Sciences; Vol 9, No 1 (2021)
en
Copyright (c) 2021 Authors
oai:ojs.pen.ius.edu.ba:article/2128
2021-12-31T17:02:15Z
pen:ART
cam 3u
"210723 2021 eng "
dc
Design of second order sliding mode observer based equivalent Back-EMF for rotor position estimation of PMSM
Faeq, Maher
Abdul Majeed, Nidam M.
Jasim, Farah Z.
This study introduces a scheme to estimate rotor position by the use of an Equal electromotive force (EMF) model of a synchronous machine. This use could be substituted by a sliding-mode observer (SMO) according to an equal EMF for superior reference speed tracking. There is an algorithm of the second order sliding-mode-control (SO-SMC) in controlling speed of permanent magnet synchronous motor (PMSM). This is by the use of the proportional plus-integral PI control sliding plane. The current work discusses the PMSM, which follows field-oriented appears. In addition, there are SO-SMC laws and PI sliding plans. This paper shows that the proposed high-speed PMSM sensorless speed control is valid by MATLAB simulations.
International University of Sarajevo
2021-07-03 19:56:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2128
Periodicals of Engineering and Natural Sciences; Vol 9, No 3 (2021)
en
Copyright (c) 2021 Maher Faeq, Nidam M. Abdul Majeed, Farah Z. Jasim
oai:ojs.pen.ius.edu.ba:article/864
2020-08-08T14:48:07Z
pen:ART
cam 3u
"191226 2019 eng "
dc
Industry 4.0 challenges to IE paradigms: A pilot study in materials handling
Mullaoglu, Gizem; Yaşar University
Yeralan, Sencer
Industrial Engineering; Optimization; Mathematical Modelling; Kanban Systems
Industry 4.0; materials handling; kanban system; aggregate model; future trends
Industrial engineering practices are expected to be affected by, and most likely adapt to, the new paradigms of Industry 4.0. Early indications in practice, as well as extrapolations from the current technology trends, point toward a few fundamental features. Among these are further integration, leaner and hence more agile practices, and the use of real-time data. The final objective is to reduce complexity while striving for real-time supply- and production-chain optimization. We argue that the optimization of highly integrated production systems cannot be sought by simply aggregating the known operations management tools of industrial engineering. Specifically, we present evidence, gleaned from a recent industrial project, that indicates how as the systems become more integrated, the concept of operations optimization needs to be revisited. Our work has two distinct contributions to the literature. We develop and present a state-of-the-art optimization model for a joint materials handling, inventory, and scheduling model. The model incorporates aspects of the knapsack, bin packing, vehicle routing, and inventory control formulations. Further, we show that simply collecting existing industrial engineering models into larger aggregations, albeit in line with the current best practices of our profession, will not necessarily suffice to completely fulfill the ambitions of Industry 4.0.
International University of Sarajevo
2020-01-14 19:11:08
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/864
Periodicals of Engineering and Natural Sciences; Vol 8, No 1 (2020)
en
Copyright (c) 2020 Gizem Mullaoglu
oai:ojs.pen.ius.edu.ba:article/1538
2020-09-28T16:48:53Z
pen:ART
cam 3u
"200808 2020 eng "
dc
A comparison of some forecasting models to forecast the number of old people in Iraqi retirement homes
Hameed, Lamyaa Mohammed Ali
Abdulrahman, Hind Waleed
Alwan, Iqbal Mahmood
Statistical methods of forecasting have applied with the intention of constructing a model to predict the number of the old aged people in retirement homes in Iraq. They were based on the monthly data of old aged people in Baghdad and the governorates except for the Kurdistan region from 2016 to 2019. Using Box-Jenkins methodology, the stationarity of the series was examined. The appropriate model order was determined, the parameters were estimated, the significance was tested, adequacy of the model was checked, and then the best model of prediction was used. The best model for forecasting according to criteria of (Normalized BIC, MAPE, RMSE) is ARIMA (0, 1, 2).
International University of Sarajevo
2020-09-28 17:54:51
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1538
Periodicals of Engineering and Natural Sciences; Vol 8, No 3 (2020)
en
Copyright (c) 2020 Lamyaa Mohammed Ali Hameed, Hind Waleed Abdulrahman, Iqbal Mahmood Alwan
oai:ojs.pen.ius.edu.ba:article/287
2019-12-30T14:51:55Z
pen:ART
cam 3u
"180605 2018 eng "
dc
Data science: Identifying influencers in social networks
Bethu, Srikanth
Sowmya, V.
Babu, B. Sankara
Babu, G. Charles
Kumar, Y. Jeevan Nagendra
Data science is a "concept to unify statistics, data analysis and their related methods" in order to "understand and analyze actual phenomena" with data. The common use of Online Social Networks (OSN)[2] for networking communication which authorizes real-time multimedia capturing and sharing, have led to enormous amounts of user-generated content in online, and made publicly available for analysis and mining. The efforts have been made for more privacy awareness to protect personal data against privacy threats. The principal idea in designing different marketing strategies is to identify the influencers in the network communication. The individuals influential induce “word-of-mouth” that effects in the network are responsible for causing particular action of influence that convinces their peers (followers) to perform a similar action in buying a product. Targeting these influencers usually leads to a vast spread of the information across the network. Hence it is important to identify such individuals in a network, we use centrality measures to identify assign an influence score to each user. The user with higher score is considered as a better influencer.
International University of Sarajevo
2018-02-27 19:04:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/287
Periodicals of Engineering and Natural Sciences; Vol 6, No 1 (2018)
en
Copyright (c) 2019 Srikanth S
oai:ojs.pen.ius.edu.ba:article/555
2020-09-18T14:28:25Z
pen:ART
cam 3u
"190725 2019 eng "
dc
The rating model of Ukraine's regions according to the level of economic development
Hryhoruk, Pavlo; Khmelnytskyi National University
Khrushch, Nila; Khmelnytskyi National University
Grygoruk, Svitlana; Khmelnytskyi National University
Economic and Mathematical Modeling
Level of economic development; Evaluation; Comprehensive index; Additive and multiplicative convolutions; Grouping; Clustering
The identification of the real level of economic development of the region is an important condition to design effective regional development policy. Economic development is characterized by a large number of indicators. This study provides an approach for assessing the level of economic development based on the use of a comprehensive index, which is a convolution of initial indicators. The model involves the use of both a group of absolute indicators and a group of relative measures of dynamics. Each of the groups of indicators has its special data normalization procedure and its special method of convolution into a partial comprehensive index. The outcome of the evaluation is obtained by weighted multiplicative convolution of partial comprehensive indexes. In this study, the level of economic development of regions of Ukraine according to the data of 2017 has evaluated. As a result, Ukraine’s regions were allocated into three groups: with the level of economic development above average, with the average level of economic development and with the level of development below average. The article suggests a way to determine the boundary values of the comprehensive index for grouping. Comparison of the obtained results of grouping with the results of clustering of the Ukraine’s regions by the k-means method with the same data showed their identity. The article shows that Ukraine’s regions can be allocated by the level of economic development into other number of groups.
International University of Sarajevo
2019-06-27 21:31:19
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/555
Periodicals of Engineering and Natural Sciences; Vol 7, No 2 (2019)
en
Copyright (c) 2019 Pavlo Hryhoruk, Nila Khrushch, Svitlana Grygoruk
oai:ojs.pen.ius.edu.ba:article/3438
2023-04-28T17:38:08Z
pen:ART
cam 3u
"230317 2023 eng "
dc
Molecular Analysis of 16s-rRNA and Associated Gene Segments for Identification of Probiotic Phenotypes
Ćosić, Amar; International University of Sarajevo,
Faculty of Engineering and Natural Sciences,
Department of Genetics and Bioengineering
Hrasnicka cesta 15, 71000 Sarajevo, Bosnia and Herzegovina
Islam, Nadia
Hromić-Jahjefendić, Altijana; International University of Sarajevo,
Faculty of Engineering and Natural Sciences,
Department of Genetics and Bioengineering
Hrasnicka cesta 15, 71000 Sarajevo, Bosnia and Herzegovina
microbiology, bioinformatics
Probiotics, 16s-rRNA, Hypervariable Regions, V3 and V4 regions
The 16s-rRNA consists of hypervariable regions (V1 – V9) that demonstrate considerable sequence diversity among different bacteria. Species-specific sequences within a given hypervariable region constitute useful targets for diagnostic assays and other scientific investigations. Usually, the size of the gene region is 1500 bp, which is large enough to be analyzed using bioinformatic tools and applied for detection. The need to advance the knowledge of the 16s-rRNA gene segments in bacterial strains would allow better understanding and better diagnostic possibilities when dealing with them. This could also be the basis for investigation of pathogenic microorganisms.
International University of Sarajevo
2023-03-03 19:03:27
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3438
Periodicals of Engineering and Natural Sciences; Vol 11, No 2 (2023)
en
Copyright (c) 2023 Amar Ćosić, Nadia Islam, Altijana Hromić-Jahjefendić
oai:ojs.pen.ius.edu.ba:article/47
2019-12-31T12:52:46Z
pen:ART
cam 3u
"160224 2016 eng "
dc
Validation of stresses with numerical method and analytical method
Akca, Enes
In this study, the goal is to confirm stresses under kind of loads, with analytical and numerical methods. But each material is drawn in SolidWorks 3D design software, and exported to ANSYS. Also the other purpose is to give information about type of stresses and formulation of each stress with different loads.
International University of Sarajevo
2016-08-25 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/47
Periodicals of Engineering and Natural Sciences; Vol 4, No 1 (2016)
en
Copyright (c) 2016 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/1655
2020-09-15T16:12:53Z
pen:ART
oai:ojs.pen.ius.edu.ba:article/2570
2021-12-26T22:40:20Z
pen:ART
cam 3u
"211226 2021 eng "
dc
Survey on encode biometric data for transmission in wireless communication networks
Hussein Ali, Mohammed
Ibrahim, Amer
Wahbah, Hasan
Al_Barazanchi, Israa
The aim of this research survey is to review an enhanced model supported by artificial intelligence to encode biometric data for transmission in wireless communication networks can be tricky as performance decreases with increasing size due to interference, especially if channels and network topology are not selected carefully beforehand. Additionally, network dissociations may occur easily if crucial links fail as redundancy is neglected for signal transmission. Therefore, we present several algorithms and its implementation which addresses this problem by finding a network topology and channel assignment that minimizes interference and thus allows a deployment to increase its throughput performance by utilizing more bandwidth in the local spectrum by reducing coverage as well as connectivity issues in multiple AI-based techniques. Our evaluation survey shows an increase in throughput performance of up to multiple times or more compared to a baseline scenario where an optimization has not taken place and only one channel for the whole network is used with AI-based techniques. Furthermore, our solution also provides a robust signal transmission which tackles the issue of network partition for coverage and for single link failures by using airborne wireless network. The highest end-to-end connectivity stands at 10 Mbps data rate with a maximum propagation distance of several kilometers. The transmission in wireless network coverage depicted with several signal transmission data rate with 10 Mbps as it has lowest coverage issue with moderate range of propagation distance using enhanced model to encode biometric data for transmission in wireless communication.
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2570
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Mohammed Hussein Ali, Amer Ibrahim, Hasan Wahbah, Israa Al_Barazanchi
oai:ojs.pen.ius.edu.ba:article/2985
2023-10-13T09:54:50Z
pen:ART
cam 3u
"220505 2022 eng "
dc
Descriptor feature based on local binary pattern for face classification
Aziz Sahy, Seba
Local Binary Patterns (LBP) is a non-parametric descriptor whose purpose is to effectively summarize local image configurations. It has generated increasing interest in many aspects including facial image analysis, vision detection, facial expression analysis, demographic classification, etc. in recent years and has proven useful in various applications. This paper presents a local binary pattern based face recognition (LBP) technology using a Vector Support Machine (SVM). Combine the local characteristics of LBP with universal characteristics so that the general picture characteristics are more robust. To reduce dimension and maximize discrimination, super vector machines (SVM) are used. Screened and Evaluated (FAR), FARR and Accuracy Score (Acc), not only on the Yale Face database but also on the expanded Yale Face Database B datasets, the test results indicate that the approach is accurate and practical, and gives a recognition rate of 98 %.
International University of Sarajevo
2022-02-21 18:58:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2985
Periodicals of Engineering and Natural Sciences; Vol 10, No 2 (2022)
en
Copyright (c) 2022 Seba Aziz Sahy
oai:ojs.pen.ius.edu.ba:article/1812
2021-09-28T11:17:37Z
pen:ART
cam 3u
"210310 2021 eng "
dc
Path-planning in 3D space using butterfly optimization algorithm
Jaafar, Al Hamami Duaa
Qahtan, Al Gburi Hussein
Emad, Al Baiati Ali
The Butterfly Optimization Algorithm is one of the most recent nature-inspired algorithms that mimic the butterflies' behavior in mating and finding food, for solving the global optimization problems. The algorithm utilizes the sense of butterflies of smelling for determining the location of nectar and find mates, which is based on the foraging strategy of those insects. This paper represents a method of using the BOA algorithm for solving the problem of path planning in three-dimensional space. The proposed method finds a path from a particular starting point to any chosen goal, where the generated final path is completely safe and collision-free. The algorithm is based on 3 phases: the initial phase, the iteration phase, and the final phase. The movement of butterflies is based on two search moves, one of them is Local random search; where the butterfly moves randomly within the swarm, and the other is Global search; where the butterfly moves towards the best-fitted butterfly in the current population. The proposed method in this paper is able to find a collision-free path from the start point to the goal in all of the presented test environments in proximately well performance and the results were computed in terms of execution time and path length.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1812
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) 2021 Al Hamami Duaa Jaafar, Al Gburi Hussein Qahtan, Al Baiati Ali Emad
oai:ojs.pen.ius.edu.ba:article/2162
2021-12-31T17:02:45Z
pen:ART
cam 3u
"210811 2021 eng "
dc
Algebraic topology: On results of quotient for topological modules
Salih, Marrwa Abdallah; Department of Mathematics, Mustansiriyah University
Majeed, Taghreed Hur; Department of Mathematics, Mustansiriyah University
Nayef, Mahdi Saleh; Department of Mathematics, Mustansiriyah University
In this paper, we have the principal goal is to study a topography property of important algebraic construction namely the quotient module. We use a new tool with a quotient module which is a tensor product of modules. Therefore all topography submodules in this notion are a tensor product. The meaning of the tensor module introduced in this notion and the important fact of this article is to explain the quotient module when all submodules are tensor. Finally, several results have been obtained about the direct sum of the finite quotient module
International University of Sarajevo
2021-07-03 19:56:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2162
Periodicals of Engineering and Natural Sciences; Vol 9, No 3 (2021)
en
Copyright (c) 2021 Marrwa Abdallah Salih, Taghreed Hur Majeed, Mahdi Saleh Nayef
oai:ojs.pen.ius.edu.ba:article/1000
2020-08-08T14:48:08Z
pen:ART
cam 3u
"200227 2020 eng "
dc
Innovation-ecofriendly employment of waste paper for producing lightweight aggregate for concrete
J. Alsaad, Aymen
Sadiq Radhi, Mushtaq
M. R. Abdul Rasoul, Zainab
Lightweight concrete mentions to any concrete produced to an oven-dry density less than 2000 kg/m3. This can reached by replacement of natural aggregates with lightweight aggregate, no fine aggregate and or adding foamed agent to the concrete. This research usage of recycled paper as an aggregate replacement in producing a lightweight concrete for construction purpose. It was used two type of production of paper aggregate (The paper aggregate treatment with cement and paper aggregate treatment with wood glue) and then replacement with natural aggregate. The results shown increasing of replacement natural aggregate (gravel) with paper aggregate will leads to decreasing in density of concrete. The paper aggregate treatment with cement give a significant compressive strength than the concrete made with paper aggregate treatment with wood glue. Paper aggregate treatment with wood glue give a significant reduction in density than the concrete made with the paper aggregate treatment with cement. The large decreasing in splitting strength due to presence of paper when the replacement is 100% from the natural aggregate (gravel). However, the percentage of replacement 50% of paper aggregate given better splitting strength than the replacement of 100%.
International University of Sarajevo
2020-01-14 19:11:08
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1000
Periodicals of Engineering and Natural Sciences; Vol 8, No 1 (2020)
en
Copyright (c) 2020 Aymen J. Alsaad
oai:ojs.pen.ius.edu.ba:article/1612
2020-09-28T16:48:54Z
pen:ART
cam 3u
"200830 2020 eng "
dc
Robust video data security using hybrid cryptography-steganography technique
Sediq Al-Kadei, Faten H.Mohammed
The interest in the digital videos confidentiality in the current electronic and interrelated world has increased. Thus, this paper aimed at making a video steganography scheme for an acceptable security with high speed of calculation by embedding data (video frames) in other video frames. The techniques of embedding and encrypting video frames in a cover video file were done through two ways. Firstly, two keys and XOR bit operation were employed to create a large range of different keys for encryption. Secondly, a modified method of Least Significant Bit (LSB) technique was used for hiding high resolution video frames (bitmap color) in selective cover video frames, offering two security layers. The procedures of encrypting and hiding video data were successfully tested on many secret videos such ad Eye Video, Secret Medicine Video and Traffic Video. All experiments were conducted using MATLAB-GUI software, representing an efficient and easy tool for video management supported by powerful testing tools as histograms and mathematics for video quality. Experimental result demonstrated a good performance with low correlation and very high PSNR of the Stego video frames.
International University of Sarajevo
2020-09-28 17:54:51
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1612
Periodicals of Engineering and Natural Sciences; Vol 8, No 3 (2020)
en
Copyright (c) 2020 Faten H.Mohammed Sediq Al-Kadei
oai:ojs.pen.ius.edu.ba:article/270
2019-12-30T12:34:42Z
pen:ART
cam 3u
"181205 2018 eng "
dc
Dynamic load balancing in image retargeting using pipeline architecture
Patil, Ganesh V.
Deshpande, Santosh L.
In today’s smart world demand of efficient multimedia based communication has increased at a rapid rate. Diversity on display sizes of gadgets used for multimedia communication confines the quality of images. Image retargeting is used as the focal solution to this problem which results in images with appropriate sizes. Enormously mounting demand of image retargeting expedites the rate of increment in computational load. This research paper expatiate and experiments a dynamic load balancing based three phase image retargeting methodology using pipeline architecture. In the first phase of image retargeting resize operation is performed on input image which results in multiple sized image copies of the same image. In the second phase resized images undergo quantization operation. In the final phase lossless compression is performed to have an expedient image. In the proposed exhibit think, we have done statistical analysis of results obtained, to confirm an impartial dynamic load balancing with a better degree of underlying resource utilization. We extend the approach to achieve significant storage optimization using three phase image retargeting.
International University of Sarajevo
2018-10-19 11:55:12
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/270
Periodicals of Engineering and Natural Sciences; Vol 6, No 2 (2018)
en
Copyright (c) 2019 Ganesh V
oai:ojs.pen.ius.edu.ba:article/514
2020-09-23T11:56:39Z
pen:ART
cam 3u
"190729 2019 eng "
dc
Role of the academic curriculum in the development of the basic learning outcomes (knowledge - skills – capabilities) of the architect using the method of currere
Yaqoob Yousif, Sajjad; Architectural Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq
Josef Rizco, Nawfal; Architectural Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq
Academic curriculum Academic outcome Architecture Method of Currere
Basic learning outcomes play an important role in giving students the general academic profile that determines the characteristics of the academic program outcome. The research problem is formulated, which is the lack of clarity about the role of the academic curriculum in the development of the basic learning outcomes of the architect in particular. Based on the foregoing, the research has tackled the development of basic learning outcomes (knowledge-skill-capability) for the architect in particular, using the method of Currere that is approved globally in the development of academic curricula and vocabulary (knowledge - skill - capacity) for the purpose of developing the efficiency of the academic outcome. The research adopted a descriptive analytical method using the method of Currere. The results of the research include a diagnose of a number of gaps which were based on reviewing the vocabulary of the course according to the need for it or its compatibility with the academic description of the graduate engineer or the academic outcome. Furthermore, the research determines some conclusions that showed the shortcomings of the academic curriculum and the reality of the practice, as well as the research has recommended with a set of recommendations that maximize the compatibility between the outcomes of the academic program and the requirements of the labor market.
International University of Sarajevo
2019-06-27 21:31:19
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/514
Periodicals of Engineering and Natural Sciences; Vol 7, No 2 (2019)
en
http://pen.ius.edu.ba/index.php/pen/article/download/514/1425
Copyright (c) 2019 Sajjad Yaqoob Yousif, Nawfal Josef Rizco
oai:ojs.pen.ius.edu.ba:article/3527
2023-04-28T17:38:11Z
pen:ART
cam 3u
"230411 2023 eng "
dc
Comparison of Weibull and Fréchet distributions estimators to determine the best areas of rainfall in Iraq
Noaman, Inam Abdul Rahman
Abdul Ameer, Huda Amer
Mohammed, Wahhab Salim
In this research, an appropriate distribution of the amount of rain will be found in the Iraqi governorates for the period (2006-2014) and the researcher used two important distributions, namely, the Weibull distribution and the Fréchet distribution.
Where the specific distribution was determined based on the minimum criteria (the criteria of goodness of fit) and the tests used are the Akaike Information Criterion (AIC) and the Bayesian Information Criterion (BIC). Rainfall in the Iraqi governorates for the stations (Mosul, Kirkuk, Tikrit, Khanaqin, Rutba, Baghdad, Karbala) is a Weibull distribution using the greatest possible estimation method, while the stations in other provinces (Najaf, Diwaniyah, Maysan, Basra) the Fréchet distribution was the distribution It is better to represent the data of these stations using the method of estimating the greatest possible as well. We also note the superiority of the method of maximum likelihood of least squares.
International University of Sarajevo
2023-03-03 19:03:27
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3527
Periodicals of Engineering and Natural Sciences; Vol 11, No 2 (2023)
en
Copyright (c) 2023 Inam Abdul Rahman Noaman, Huda Amer Abdul Ameer, Wahhab Salim Mohammed
oai:ojs.pen.ius.edu.ba:article/86
2019-12-31T09:26:30Z
pen:ART
cam 3u
"170322 2017 eng "
dc
Development of computer-aided industrial design technology
Akca, Enes; International University of Sarajevo
With the development of science and technology, industrial design industry also in development, and at the same time, the industrial market in the design of the products of industry, the species diversity of interest requirement also become increasingly strict. In order to ensure that the industrial design in terms of quality and quantity can better development, computer aided design of the industry establish human-computer interaction, become the key factors of industry design. This paper puts forward based on computer aided the origin of the industrial design, and then puts forward computer-aided industrial design of man-machine interaction of the concept and characteristic, and human-computer interaction application in industrial design, and finally to the future development of human-computer interaction made planning and prospected.
International University of Sarajevo
2017-07-03 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/86
Periodicals of Engineering and Natural Sciences; Vol 5, No 2 (2017)
en
http://pen.ius.edu.ba/index.php/pen/article/download/86/242
Copyright (c) 2017 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/3617
2023-06-07T19:02:36Z
pen:ART
oai:ojs.pen.ius.edu.ba:article/2587
2023-07-07T15:31:55Z
pen:ART
cam 3u
"211229 2021 eng "
dc
Seismic evaluation and strengthening of reinforced concrete buildings
Khlef, Khnsaa Abdullhay
Majeed, Fareed Hameed
Al-Hussein, Abdullah
Strengthening Technique, Steel Jacket, Ferro-Cement Jacket, Carbon Fiber Reinforced Polymer Jacket
One of the best ways of achieving sustainability is to prolong the life span of existing structures instead of the “demolish and rebuild” option. Structure rehabilitation reduces construction waste, conserves natural resources, reduces negative environmental consequences, saves time, and saves cost, etc. Two main categories can be noticed in rehabilitation: repairing and strengthening. This study will focus on the strengthening category. The seismic analysis of existing reinforced concrete buildings before and after strengthening their columns is considered in this study. Three strengthening techniques (Ferro-cement jacket, steel jacket and Carbon fiber reinforced polymer jacket) are used to strengthen the reinforced concrete columns. The building is considered to be subjected to El Centro earthquake in two horizontal directions. The main objective is to investigate the optimum number and locations of the columns required to be strengthened so that the strengthened building satisfies the performance level. Four states of the building are considered; the original building and three strengthened buildings. The strengthening of a part of column height (only one meter along the potential plastic hinge) is considered. The results show that all three strengthening techniques are efficient to resist the seismic loads. This study helps engineers to select suitable, feasible and efficient strengthening techniques for structural members in existing buildings.
International University of Sarajevo
2021-12-26 21:58:18
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2587
Periodicals of Engineering and Natural Sciences; Vol 10, No 1 (2022)
en
Copyright (c) Khnsaa Abdullhay Khlef, Fareed Hameed Majeed, Abdullah Al-Hussein
oai:ojs.pen.ius.edu.ba:article/3046
2022-07-04T16:18:43Z
pen:ART
cam 3u
"220616 2022 eng "
dc
The impact of the application of International Standard No. 13 on the market value of banking sector companies in the Iraqi Stock Exchange
AL-Khafaji, Ali Abbas Kareem
Mustafa, Rasha F.
Hasan, Iman Saleh
The topic of the research aims to consolidate the concept of fair value, and then to identify the international financial reporting standard and its role in the application of fair value in the Iraqi local environment and the possibility of using it in determining the value of the company. To achieve the goal of the research, the analytical approach was adopted for the data and information that was obtained by the researcher by conducting interviews with a number of bank and department managers in a sample of Iraqi banks registered in the Iraq Stock Exchange, and then analyzed by adopting some quantitative financial methods. The researchers reached a set of conclusions, the most important of which was the impact of fair value accounting in accordance with International Financial Reporting Standard on the value of the company in financial institutions, and that the adoption of fair value measurement in accordance with International Financial Reporting Standard 13 is more reliable on other accounting standards in determining the value of the company. The researchers recommended the need to pay attention to the actual application of the concept of fair value, due to the advantages that this measurement enjoys because of its preference over the historical cost affecting the country's economy.
International University of Sarajevo
2022-05-06 19:22:10
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3046
Periodicals of Engineering and Natural Sciences; Vol 10, No 3 (2022)
en
Copyright (c) 2022 Ali Abbas Kareem AL-Khafaji, Rasha F. Mustafa, Iman Saleh Hasan
oai:ojs.pen.ius.edu.ba:article/1839
2021-09-28T11:18:17Z
pen:ART
cam 3u
"210401 2021 eng "
dc
Joint image encryption and compression schemes based on hexa-coding
H. Rasheed, Mohammed
M. Salih, Omar
M. Siddeq, Mohammed
This research proposes a new image compression and encryption method depend on a modified JPEG technique combined with the Hexa-Coding algorithm. The compression algorithm starts by dividing an image into 8x8 blocks, then DCT (Discrete Cosine Transform) is applied to all blocks independently followed by uniform quantization. Additionally, the size of blocks is reduced by eliminating insignificant coefficients, and then Arithmetic coding is applied to compress residual coefficients. Finally, Hexa-encoding is applied to the compressed data to further reduce compression size as well as provide encryption. The encryption is accomplished based on five different random keys. The decompression uses a searching method called FMSA (Fast Matching Search Algorithm) which is used for decoding the previously compressed data, followed by Arithmetic decoding) to retrieve residual coefficients. These residuals are padded with zeros to rebuild the original 8x8 blocks. Finally, inverse DCT is applied to reconstruct approximately the original image. The experimental results showed that our proposed image compression and decompression has achieved up to 99% compression ratio while maintaining high visual image quality compared with the JPEG technique.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1839
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) 2021 Mohammed H. Rasheed, Omar M. Salih, Mohammed M. Siddeq
oai:ojs.pen.ius.edu.ba:article/2253
2022-01-10T18:44:39Z
pen:ART
cam 3u
"210824 2021 eng "
dc
A plan for transportation and distribution the products based on multi-objective travelling salesman problem in fuzzy environmental
Khalaf, Wakas S.
Khalaf, Batool Atiyah
Abid, Noorah Osama
Transportation and distribution are the most important elements in the work system for any company, which are of great importance in the success of the chain work. Al-Rabee factory is one of the largest ice cream factories in Iraq and it is considered one of the most productive and diversified factories with products where its products cover most areas of the capital Baghdad, however, it lacks a distribution system based on scientific and mathematical methods to work in the transportation and distribution processes, moreover, these processes need a set of important data that cannot in any way be separated from the reality of fuzziness industrial environment in Iraq, which led to use the fuzzy sets theory to reduce the levels of uncertainty. The decision-maker has several goals that he aspires to accomplish for two stages, so, the decision-maker adopted in his work system on a multi-objective travelling salesman problem. A network of paths for transportation and distribution of the products has been designed based on a multi-objective travelling salesman problem, by building a mathematical model that finds the best paths for each stage, taking into account the goals required by the decision-maker. The results obtained from the use of (Lingo) software showed the importance of these methods in determining the optimal path for the processes of collecting and transporting milk from their collection centers to the Al-Rabee factory as a first stage, as well as transporting the final products and distributing them from the Al-Rabee factory to the shopping centers as a second stage.
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2253
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Wakas S. Khalaf, Batool Atiyah Khalaf, Noorah Osama Abid
oai:ojs.pen.ius.edu.ba:article/1034
2020-08-08T14:48:10Z
pen:ART
cam 3u
"200304 2020 eng "
dc
A miniaturization of the UWB monopole antenna for wireless baseband transmission
Abayaje, Furat; Microwave Research Group, Department of Software Engineering, University of Mosul, Iraq
Hashem, Seham Ahmed
Obaid, Hadeel S.
Mezaal, Yaqeen S.
Khaleel, Shahad K.
In this paper, a novel Monopole patch antenna with dimension 22*20*1.6 mm3 is presented to enhance the bandwidth and minimize the size of the antenna. The power divider and etched a slot on the ground plane are significant improvements in the proposed antenna. Based on this approach, the ultra-wideband antenna for 2.4 GHz to 9.6 GHz frequency band is a significant improvement. The flat gain from -5dB to 2.3dB over the frequency band of operation, which is provided to transmit and receive the output line code from Rapid Signal Flux Quantum (RSFQ) chip directly without modulation techniques (WBT) by these antennas between two different environments (4K-300k). The nearly radiation patterns of the presented antenna are bidirectional at E-plane and omnidirectional at H-plane.
International University of Sarajevo
2020-01-14 19:11:08
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1034
Periodicals of Engineering and Natural Sciences; Vol 8, No 1 (2020)
en
Copyright (c) 2020 Furat Abayaje
oai:ojs.pen.ius.edu.ba:article/1670
2020-09-28T16:48:56Z
pen:ART
cam 3u
"200918 2020 eng "
dc
The effect of changing the exchange rate on some economic variables by using the autoregressive distributed Lag (ARDL) in Iraq
Essa, Ameena Kareem
Abd, Haifa Taha
Rasheed, Husam abdul-Razzak
The issue of the exchange rate has emerged as one of the most important problems facing countries in drawing the parameters of their foreign exchange, as dealing in the foreign currency market has become one of the most dangerous transactions, and studies have shown the existence of several mutual effects between exchange rate fluctuations and macroeconomic variables. The study focuses on analyzing the impact of fluctuations The exchange rate on macroeconomic variables. This comes in the wake of the fundamental changes in the macroeconomic indicators in Iraq, which included inflation and oil prices, which had a major impact on the value of the Iraqi dinar against the US dollar. The Autoregressive Distributed Lag (ARDL) was used to analyze time-series data from 1990-2017. This model can distinguish between dependent and explanatory variables and eliminate the problems that may arise due to the presence of autocorrelation and internal growth. The ARDEL model can also estimate the short-term and long-term relationship, simultaneously. The results showed that there is a long-term relationship between the exchange rate with inflation, GDP, expanded the money supply, and foreign reserves. This is consistent with the reality of economic theory, but in the short term, there is a relationship between the exchange rate and inflation. The reason is that there is no relationship between the price Exchange and other variables in the short term due to the inability to demonstrate the impact of these variables in a relatively short period, from which we conclude that reducing volatility in macroeconomic variables due to the stability the exchange rate in the Iraqi economy to help decision-makers draw correct economic policies.
International University of Sarajevo
2020-09-28 17:54:51
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1670
Periodicals of Engineering and Natural Sciences; Vol 8, No 3 (2020)
en
Copyright (c) 2020 Ameena Kareem Essa, Haifa Taha Abd, Husam abdul-Razzak Rasheed
oai:ojs.pen.ius.edu.ba:article/400
2019-05-12T11:36:59Z
pen:ART
cam 3u
"190423 2019 eng "
dc
Technology enhanced learning in teachers’ professional development
Ulmane-Ozolina, Lasma
Jansone, Anita
Magazeina, Ilva
Barute, Dina
Education; Technology Enhanced Learning
Computing; E-learning; TEL; Teachers’ professional development; Webinar
There is a lot of attention focused on the development of digital competency
already in early age. One of the key person is teacher. To develop teachers’
digital skills, technology enhanced learning can be used in their professional
development. There is large change in Latvia’ education system. One of the
changes is subject “Computing” that will be compulsory in all schools from
2019. From 2015 Liepaja University participates in a pilot project for this
purpose and is only one that offers teachers’ professional development
courses for the subject. Article’s aim is to introduce “Computing” course,
mainly the last one what was organized mostly in webinar mode. The article
shows first data from teachers’ survey about their attitude to a webinar. This
is the first article in a series about research made on this course.
International University of Sarajevo
European Regional Development Fund project Nr.1.1.1.5/18/I/018
2019-02-13 15:51:33
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/400
Periodicals of Engineering and Natural Sciences; Vol 7, No 1 (2019)
en
Copyright (c) 2019 Lasma Ulmane-Ozolina, Anita Jansone, Ilva Magazeina, Dina Barute
oai:ojs.pen.ius.edu.ba:article/512
2020-09-18T14:27:47Z
pen:ART
cam 3u
"190809 2019 eng "
dc
Intrusion detection system in gas-pipeline industry using machine learning
Hasan Dakheel, Ali
Hasan Dakheel, Awfa; College of Basic Education, Department of math. &computer, Computer science, University of Babylon, Iraq
Hadi Abbas, Haider; Computer Technology Enginering Department, Al-Mansour University College (MUC), Iraq , https://ORCID.org/0000-0002-0724-7829
Gas-Pipeline Machine learning Optimization Time Interval Intrusion Recognition classification Feature Extraction
In this paper, we study about the plausibility of building up a total intrusion identification framework for gas pipeline industry utilized in present day man-made AI based frameworks to tell a gas controller of unexpected changes in pipeline working qualities, for example, weight, time interim, delta pipeline PSI and stream rate. This examination assesses the possibility for utilizing AI example of cautions strategies utilizing three able AI calculations, for example, Decision tree, K-Nearest Neighbor and Neural Network to recognize breaks in gas frameworks, like the SCADA rate of progress blend philosophy utilized by the risky fluids pipeline industry. The highlights were extricated from the dataset by evacuating the repetitive information too cleaning the information. The significant commitment to this work is by utilizing choice tree in three distinct degrees for example randomized, advanced and timberland just as utilizing the neural system with 3 layers, 20 units for each concealed layer, 20 preparing rounds and with 2 layers, 50 preparing rounds as appeared in down to earth some portion of this work executed in Matlab R2019a to recognize and foresee the potential assault in the gas pipeline industry. The idea of AI examination considered here shows guarantee, in light of the aftereffects of gas pipeline burst checking under the conditions tried. It can possibly be formed into a compelling crack checking technique, yet additionally testing under genuine world, complex-framework setups, in participation with appropriate AI demonstrating specialists, is expected to all the more likely comprehend the genuine practicality of this adjustment mechanized innovation. Since gases and fluids display diverse physical practices under changing weight and stream conditions an immediate relationship between's the viability in gas versus fluids frameworks can't be accurately expected that why AI would give the answer for variety in Pipeline PSI and complete delta pipeline PSI. For example, by-passing and back-feeding, and various other framework explicit conditions requiring redid arrangements utilizing AI.
International University of Sarajevo
2019-08-19 12:14:39
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/512
Periodicals of Engineering and Natural Sciences; Vol 7, No 3 (2019)
en
http://pen.ius.edu.ba/index.php/pen/article/download/512/1423
Copyright (c) 2019 Ali Hasan Dakheel, Awfa Hasan Dakheel, Haider Hadi Abbas
oai:ojs.pen.ius.edu.ba:article/76
2019-08-07T14:45:31Z
pen:ART
cam 3u
"170322 2017 eng "
dc
Assessment of the energy generation potential of photovoltaic systems in Caribbean region of Colombia
Ariza Taba, Manuel Fernando; Solar Energy İnstitute, Ege University
Mwanza, Mavbuto; Solar Energy Institute, Ege University
Çetin, Numan S; Solar Energy Institute, Ege University
Ülgen, Koray; Solar Energy Institute, Ege University
Photovoltaic systems, Performance ratio, centralized grid connected (CGC), Capacity factor, Final yield.
At present the use of solar energy for power generation has increased in recent years, this is due not only to climate change but also to reduce costs of solar technology materials and equipment. The paper assesses the energy generation potential of photovoltaic systems in the Caribbean region of Colombia based on data extracted from NASA Surface Meteorology and Solar Energy. The solar energy atlas for Caribbean region was generated using ArcGIS program. The analyzed results indicates that in the Caribbean region of Colombia there is a huge energy generation potential of photovoltaic systems with annual electricity generation of 1554.47kWh/kWp and performance ratio of 79.63% which is good for PV systems. This study is important as generated results are vital for the development of PV systems in the region and also the results can be used in the future social, economic and environmental impact study for deployment of these systems; and selecting the suitable area and appropriate technology that can adapt to the conditions of this region.
International University of Sarajevo
Turkish government YTB
2017-03-23 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/76
Periodicals of Engineering and Natural Sciences; Vol 5, No 1 (2017): Special Issue - Recent Topics in Enviromental Science
en
Copyright (c) 2017 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/3112
2022-07-04T16:18:45Z
pen:ART
cam 3u
"220629 2022 eng "
dc
Characterization of fatigue properties of 3D printed polylactic acid
Ali, Hind B.
Alazawi, Dalia R.
The goal of this research is to determine how tiredness behavior may be measured (PLA). A To A variety of technical data sets were S-N curves were chosen and statistically re-analyzed. as described in the following section, to generate a negative reference value reverse slope also an improved tolerance limit of 106 2 failure cycles. The average effect of stress on fatigue can be indicated via administering the highest level of stress achievable during the cycle, according to experimental data examined after treatment.Furthermore stress/strength study may be effectively performed until the printing orientation seems to possess minimal influence on PLA's general tiredness behavior. carried out via taking the printing orientation into account. A homogeneous, linearly elastic polymer is described. When acceptable experimental findings are not available, the paper explains how to conduct a fatigue evaluation (with a survival probability better than 95%). The study demonstrates how to do so via utilizing standard fatigue curves with a negative-inverse regression of 5.5 and a tolerance limit (2 106 cycles to failure) equivalent to 10% of the material's maximum σ_t.
International University of Sarajevo
2022-05-06 19:22:10
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3112
Periodicals of Engineering and Natural Sciences; Vol 10, No 3 (2022)
en
Copyright (c) 2022 Hind B. Ali, Dalia R. Alazawi
oai:ojs.pen.ius.edu.ba:article/3604
2023-07-07T15:02:18Z
pen:ART
cam 3u
"230522 2023 eng "
dc
Exploring the potential of offline cryptography techniques for securing ECG signals in healthcare
Shawkat Abdulbaqi, Azmi
Ali Hussein Al Naffakh, Hussein
Abdulmunem Mohammed Al-Juboori, Sura
Dheyaa Radhi, Ahmed
Fadhil Tawfeq, Jamal
Soon JosephNg, Poh
In the research, a software for ECG signal based on Chaos encryption based on C#-programmed and Kit of Microsoft Visual Studio Development was implemented. A chaos logic map (ChLMp ) and its initial value are utilized to create Level-1 ECG signal based on Chaos encryption bit streams. A ChLMp, an initial value, a ChLMp bifurcation parameter, and two encryption level parameters are utilized to create level-2 ECG signal based on Chaos encryption bit streams. The level-3 ECG signal based on Chaos encryption software utilizes two parameters for the level of encryption, a permutation mechanism, an initial value, a bifurcation parameter of the level of encryption, and a ChLMp. We assess 16-channel ECG signals with great resolution utilizing encryption software. The level-3 ECG signal based on Chaos encryption program has the slowest and most reliable encryption speed. The encryption effect is superior, according to test findings, and when the right decoding parameter is utilized, the ECG signals may be completely recovered. The high resolution 16-channel ECG signals (HRMCECG) won't be recovered if an invalid input parameter occurred, such as a 0.00001% initial point error, which will result in chaotic encryption bit streams.
International University of Sarajevo
2023-05-10 19:17:05
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3604
Periodicals of Engineering and Natural Sciences; Vol 11, No 3 (2023)
en
Copyright (c) 2023 Azmi Shawkat Abdulbaqi, Hussein Ali Hussein Al Naffakh, Ahmed Dheyaa Radhi, Jamal Fadhil Tawfeq, Poh Soon JosephNg
oai:ojs.pen.ius.edu.ba:article/2319
2021-09-17T10:04:15Z
pen:ART
cam 3u
"210910 2021 eng "
dc
Ensuring security the movement of foreign direct investment: Ukraine and the EU economic relations
Trusova, Natalia V.; Department of Finance, Banking and Insurance, Dmytro Motornyi Tavria State Agrotechnological University
Cherniavska, Tetiana A.; Department of Finance, Accounting and Logistics, State University of Applied Sciences in Konin
Kyrylov, Yurii Ye.; Department of Public Management and Administration, Kherson State Agrarian and Economic University
Hranovska, Viktoriia H.; Department of Hotel and Restaurant and Tourism Business, Kherson State Agrarian and Economic University
Skrypnyk, Svitlana V.; Department of Accounting and Taxation, Kherson State Agrarian and Economic University
Borovik, Liubov V.; Department of Accounting and Taxation, Kherson State Agrarian and Economic University
Investment infrastructure, National economy, State's development, Economic growth, International investment
It is well known that an important positive result of attracting foreign direct investment for the country's economy can be the receipt and subsequent distribution of more advanced production and management technologies. That is why the injection of foreign capital is necessary not only for direct financing but also for the general development of the invested country. The purpose of this article is to consider the theoretical, methodological and practical aspects of ensuring the level of security of investment attractiveness of the world's economies in the polystructural space of foreign direct investment and to highlight the aggregated factors of the investment attractiveness index that characterize the investment climate, investment activity and the state of economic development of the country. To determine the synergistic impact of foreign direct investment on the indicator of the country's investment attractiveness the methods of analysis, synthesis, comparison and mental modelling were used. As a result, it was found that the EU countries are one of the largest investors (the share 65-90% of all investments) in the polystructural space of international investment. It was concluded that in the context of deepening cooperation and realizing the unique capabilities of the states in shaping the global investment climate, it is necessary to ensure a high level of employment of the population by creating new jobs, updating the transfer and introducing the latest technologies, solving social problems at the general level; to carry out an investment modernization of the economy to increase the fixed assets of enterprises; to implement a more effective investment policy.
International University of Sarajevo
2021-07-03 19:56:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2319
Periodicals of Engineering and Natural Sciences; Vol 9, No 3 (2021)
en
Copyright (c) 2021 Natalia V. Trusova, Tetiana A. Cherniavska, Yurii Ye. Kyrylov, Viktoriia H. Hranovska, Svitlana V. Skrypnyk, Liubov V. Borovik
oai:ojs.pen.ius.edu.ba:article/1161
2020-08-08T14:48:12Z
pen:ART
cam 3u
"200314 2020 eng "
dc
Employment of the genetic algorithm in some methods of estimating survival function with application
Redha, Sabah Manfi
Abdel Hadia, Anwar Taher
Intended for getting good estimates with more accurate results, we must choose the appropriate method of estimation. Most of the equations in classical methods are linear equations and finding analytical solutions to such equations is very difficult. Some estimators are inefficient because of problems in solving these equations. In this paper, we will estimate the survival function of censored data by using one of the most important artificial intelligence algorithms that is called the genetic algorithm to get an optimal estimates for parameters Weibull distribution with two parameters. This leads to optimal estimates of the survival function. The genetic algorithm is employed in the method of moment , the least squares method and the weighted least squares method and getting on more efficient estimators than classical methods. Then, a comparison will be made between the methods depending on the experimental side. The best method is evaluated based on mean square error of the survival function and the methods will be applied to real data for patients with lung and bronchia cancer.
International University of Sarajevo
2020-01-14 19:11:08
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1161
Periodicals of Engineering and Natural Sciences; Vol 8, No 1 (2020)
en
Copyright (c) 2020 Sabah Manfi Redha, Anwar Taher Abdel Hadia
oai:ojs.pen.ius.edu.ba:article/2615
2023-07-07T15:31:57Z
pen:ART
cam 3u
"220107 2022 eng "
dc
A new methods of mobile object measurement by using radio frequency identification
Kamal, Ayoub Esam
Mahmood, Zuhiar Shakor
Nasret, Ali Najdet
In this study, the mobile robot conducts tag of RFID and the antennas’ reader was scattered at the indoor-outdoor environment, which represents the novelty of the study, as this has not been done in the previous studies. This protects the mobile robot from weight increase reduces the consumption of the battery. Moreover, mobile object increase demands an increase in cheap passive Radio Frequency Identification tags in the system of navigation. Techniques of Signal processing utilize both accompanied by the theories of electromagnetics in locating the robot’s position. Numerous antennas usage provides a breadth of comparisons. In this work, have been provide a new RFID tracking approach that can also be used for interior positioning. This technique employs RSS to gather the signal intensity of reference tags before they are used. The next step is to send a signal. Setting up Power Level ranges via reference tags uses strength as a setting parameter. Then, based on the intensity of the signal, you can determine how far away you are. Reference tags are used to match the signal intensity of track tags. Finally, when track tags are installed in indoor locations, they can be used to monitor the movement of people. It will use the arithmetic mean of the positions of surrounding reference tags to determine the location. Values. According to preliminary results from an experiment, our approach is more precise than the antenna system. Approximately 10 to 20 lines.
International University of Sarajevo
2021-12-26 21:58:18
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2615
Periodicals of Engineering and Natural Sciences; Vol 10, No 1 (2022)
en
Copyright (c) 2022 Ayoub Esam Kamal, Zuhiar Shakor Mahmood, Ali Najdet Nasret
oai:ojs.pen.ius.edu.ba:article/1690
2020-12-21T11:34:52Z
pen:ART
cam 3u
"201014 2020 eng "
dc
Exploring indicators of engagement: applications for gamification of online training systems
Saleh Alfaqiri, Abdullatif
Mat Noor, Siti Fadzilah
Sahari Ashaari, Noraidah
In recent years, gamification is being used in business organization for an increased employee engagement in the work place. However, less has been said about engagement of employees in online training to learn new skills and knowledge that may help or improve status quo in the organization. This paper explores the engagement indicators and game elements that may foster employee engagement in online training. The study employs an iterative step-by-step methodology that is used in information technology for the development of artefacts. As a result, a framework to implement the gamification technique in online training is proposed. The framework consists of a gamification construct that contains a set of commonly used game elements such as points, levels, challenges, rewards, competition, progress bar, leaderboard, badges, and feedback. The framework also contains three engagement dimensions including behavioural, emotional, and cognitive dimensions. To achieve the main objective of the study, an iterative process used by information technology researchers to develop new artefacts and their constructs is employed. As for the formulation of the hypothesis, for the evaluation of gamification’s influence on employee engagement when attending an online training, Technology Acceptance Model (TAM) is employed.
International University of Sarajevo
2020-10-02 11:04:11
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1690
Periodicals of Engineering and Natural Sciences; Vol 8, No 4 (2020)
en
Copyright (c) 2020 Abdullatif Saleh Alfaqiri, Siti Fadzilah Mat Noor, Noraidah Sahari Ashaari
oai:ojs.pen.ius.edu.ba:article/362
2020-09-18T14:28:57Z
pen:ART
cam 3u
"190423 2019 eng "
dc
The UAV control approach by using multi agent systems
Muraru, Adrian; Transilvania University of Brașov
Lile, Ramona; Aurel Vlaicu University of Arad
Boșcoianu, Elena Corina; National Institute for Aerospace Research "Elie Carafoli", Bucharest
Boșcoianu, Mircea; Transilvania University of Brașov
Vladareanu, Luige; Romanian Academy, Institute of Solid Mecanics of the Romanian Academy
multi agent system; unmanned aerial vehicles; air traffic management; autonomous control systems; negotiating flight conflicts
The Unmanned Aerial Vehicles (UAV) are becoming more and more accessible and their applications will grow with various utility’s from military fields with specific missions to civil so that in-depth research, in which all this types of UAV’s will operate in the future airspace, has to be done via a new concept on systems centralized autonomous control system. Approach of a Multi-Agent System (MAS) used for the development of an autonomous UAV Control System is presented. In the proposed model some processes are simplified, however it is unique, and can be used as it to help UAV’s operate in the flight airspace. This system will serve many UAV users to help them work in the same defined airspace without concerns regarding safety. The proposed model is a new concept of a multi-agent system design, simulated in NetLogo software, which include the parameters necessary to function with the objective to maintaining separation.
International University of Sarajevo
This work was supported by a grant of the Romanian Ministry of Research and Innovation, CCCDI-UEFISCDI, MULTIMOND2 project number PN-III-P1-1.2-PCCDI2017-0637/33PCCDI/01.03.2018, within PNCDI III, and by the European Commission Marie Skłodowska-Curie SMOO
2019-02-13 15:51:33
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/362
Periodicals of Engineering and Natural Sciences; Vol 7, No 1 (2019)
en
Copyright (c) 2019 Adrian Muraru, Ramona Lile, Elena Corina Boșcoianu, Mircea Boșcoianu, Luige Vladareanu
oai:ojs.pen.ius.edu.ba:article/1898
2022-02-17T17:50:42Z
pen:ART
cam 3u
"210425 2021 eng "
dc
Hybrid of K-means clustering and naive Bayes classifier for predicting performance of an employee
Fadhil, Zainab Mahmood
Predicting the performance of an employee in the future is a requirement for companies to succeed. The employee is the organization's main component, the failure or organization’s success based on the performance of an employee, this has become an important interest in almost all types of companies for decision-makers and managers in the implementation of plans to find highly skilled employees correctly. Management thus becomes involved in the success of these employees. Particularly to guarantee that the right employee at the right time is assigned to the convenient job. The forecasting of analytics is a modern human resource trend. In the field of predictive analytics, data mining plays a useful role. To obtain a highly precise model, the proposed framework incorporates the K-Means clustering approach and the Naïve Bayes (NB) classification for better results in processing performance data of employees, implemented in WEKA, which enables personnel professionals and decision-makers to predict and optimize their employees' performance. The data were taken from the previous works, this was used as a test case to illustrate how the incorporates of K-Media and Naïve Bayes algorithms increases the exactness of employee performance predicting, compared with the K-Means and Naïve Bayes methods, the proposed framework increases the accuracy of predicting the performance of an employee.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1898
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) Zainab Mahmood Fadhil
oai:ojs.pen.ius.edu.ba:article/680
2020-09-18T14:27:56Z
pen:ART
cam 3u
"190913 2019 eng "
dc
Guess the time of implementation of residential construction projects using neural networks ANN
Abdulridha AL-Zubaidi, Elaf Dheyaa; University of ALQadisiyah, Iraq
Hashim Yas, Ali; College of Engineering, University of Kerbala, Karbala, Iraq
Fadhil Abbas, Hayder; Construction Management Engineering, Al-Farabi University College, Iraq
Artificial Neural Network Implementation Residential Construction Time
The construction duration of residential projects, especially in building processes, significantly impact the business of a construction company. The balance between the planned cost, direct cost, and overheads directly depend on the precision of the implementation phase of the project. The application of the artificial neural network (ANN) to predict the duration of implementation of a residential construction project from the pre-design stage to completion is comprehensively discussed in this research. The study applies the back-propagation (BP) network made of nodes for error evaluation of the training states. Further, the proposed system illustrated that the artificial neural network (ANN) satisfy the three crucial criteria (cost, quality, and time) used for the evaluation of projects. The ANN provided accurate data for the training and estimation of, the duration of a residential construction project with adequate resources of implementation. The performance of the results for the ANN at 105 iteration shows that the prediction was 99.841% accurate for the overall system. The best fit occurred at the 99th epoch with an MSE of 0.10286.
International University of Sarajevo
2019-08-19 12:14:39
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/680
Periodicals of Engineering and Natural Sciences; Vol 7, No 3 (2019)
en
Copyright (c) 2019 Elaf Dheyaa Abdulridha AL-Zubaidi, Ali Hashim Yas, Hayder Fadhil Abbas
oai:ojs.pen.ius.edu.ba:article/1326
2020-06-22T11:58:46Z
pen:ART
cam 3u
"200513 2020 eng "
dc
Validity of sand dunes sediments as a fine aggregates for roads works: a case study on sand dunes sediments, Al-Nasiriya city, southern Iraq
A. Mandhour, Esraa
In light of the development and urban growth of the city of Al-Nasiriya, the road construction sector consumes the largest amount of aggregates. The research aims to study suitability of the sediments of the sand dunes extending on one side of the international road between Nasiriya – Baghdad near the check point of Fadak as fine aggregate used for the purposes of roads construction. The results of the geotechnical evaluation of physical properties showed that the grain size analysis of the fine aggregate did not meet the requirements of the Iraqi specification and according to these results, the aggregate needs to modify. Based on liquid limits and plasticity indices and according to Iraqi specification the deposits are suitable for using as sub-grade course materials and to construct the shoulders of the road but not suitable for using as sub-base course materials. While the results of chemical tests indicate that incompatibility of the rates of organic matters and calcium carbonates with Iraqi specification. On the other hand, the chemical analysis of the sediments showed that the rates of the chlorides, sulfates, gypsum, total soluble salts and pH they were within acceptable limits of standard specifications. The mineral components of the soils were characterized by clay minerals (kaolinite and montmorillonite) and non-clay minerals (quartz, feldspar, and calcite).
International University of Sarajevo
2020-05-08 00:19:24
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1326
Periodicals of Engineering and Natural Sciences; Vol 8, No 2 (2020)
en
Copyright (c) 2020 Esraa A. Mandhour
oai:ojs.pen.ius.edu.ba:article/139
2019-08-07T14:45:45Z
pen:ART
cam 3u
"170624 2017 eng "
dc
Raman and FT-IR Spectra, DFT and SQMFF calculations for N,N-Dimethylaniline
Çatıkkaş, Berna; Mustafa Kemal University
Atom and Molecule Physics
Monoazo disperse dye, Infrared and Raman Spectroscopy, Scaled Quantum Mechanical Force Field (SQMFF)
Raman and FT-IR spectra of N,N-Dimethylaniline (DMA) molecule, which is a monoazo disperse dye, were recorded in the regions of 0 to 2085 cm−1 (Raman) and 350-4000 cm-1 (FT-IR). Vibrational frequencies calculation and molecular electronic potential surface have been computed by using density functional B3LYP method with the 6-31+G(d,p) set for the ground state geometry of the title molecule. Total potential energy distributions (TED) was obtained with Scaled Quantum Mechanical calculations to make the fundamental assignment. Assigned fundamental modes of DMA molecule were compared with the previous reported experimental values.
International University of Sarajevo
Mustafa Kemal University, Zeynel Seferoğlu, Gazi University, TUBITAK ULAKBIM TRUBA Resources.
2017-07-03 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/139
Periodicals of Engineering and Natural Sciences; Vol 5, No 2 (2017)
en
Copyright (c) 2017 Periodicals of Engineering and Natural Sciences (PEN)
oai:ojs.pen.ius.edu.ba:article/3114
2022-08-29T09:11:56Z
pen:ART
cam 3u
"220712 2022 eng "
dc
Using metaheuristics to improve the placement of multi-controllers in software-defined networking enabled clouds
Radam, Neamah Sattar
Al-Janabi, Sufyan
Jasim, Khalid Shaker
SDN is a model that separates the control and the data levels in an arrangement to enhance capability to program and configure the network in a more agile and efficient manner. Multiple controller modules have been used in the SDN engineering to empower programmable and adaptable configurations such as improving scalability and reliability. The distance and time calculations and other performance measures have to be considered in solving the Multi-Controller Position Problem (MCPP). This paper investigates the use of metaheuristic algorithms to build an MCPP mathematical model. Both the symmetric Harmony Search (HS) modelling and the Particle Swarm Optimization (PSO) algorithm are considered in this respect. Thus, our hybrid approach is proposed and known as Harmony Search with Particle Swarm Optimization (HSPSO) is applied and we compared the extracted results with the state-of-the-art techniques in the previous literature. Besides the development of the mathematical model, a simulation study has been done considering the relevant parameters including the link distance description and the access time between the SDN entities. The console simulation uses NetBeans with CloudsimSDN procedure files in the SDN-based cloud environment.
International University of Sarajevo
2022-07-05 19:46:09
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3114
Periodicals of Engineering and Natural Sciences; Vol 10, No 4 (2022)
en
Copyright (c) 2022 Neamah Sattar Radam, Sufyan Al-Janabi, Khalid Shaker Jasim
oai:ojs.pen.ius.edu.ba:article/3715
2023-09-05T14:44:09Z
pen:ART
cam 3u
"230707 2023 eng "
dc
The effect of independent audit quality on the quality of financial reporting in the listed companies in Tehran and Baghdad stock exchanges
Abbas, Siraj
Izadinia, Nasser
Kiani, Gholamhossein
The primary purpose of this research is to investigate the relationship between the quality of the external audit and the quality of the financial reporting done by companies that are traded on the Tehran and Baghdad Stock Exchanges. The experience of the auditor in the sector, the auditor's reputation, and the auditor's length of service were utilized as determining factors for the quality of the external audit. In order to determine whether or not the reporting of financial data can be trusted, discretionary accruals are analyzed. The companies that are members of the Tehran Stock Exchange and the Baghdad Stock Exchange make up the statistical population for the current study. They were chosen using the process of systematic elimination, which was applied to 102 firms that were admitted to the Tehran Stock Exchange and 35 companies that were admitted to the Baghdad Stock Exchange. In order to examine the data, multiple regression analyses were performed. According to the findings of the study, the quality of financial reporting at the Baghdad Stock Exchange is not significantly impacted by the standard of external auditing. In addition, the independence of the Tehran Stock Exchange's financial reporting is directly and considerably impacted by the quality of the audits conducted by external parties. The findings, taken as a whole, suggested that in order for enterprises to function properly in Iraq they need a secure and politically stable environment. This, in turn, has an effect on the accuracy of the reports they provide. On the other hand, the profession of auditing in Iraq is still in its formative stages, and auditors need to have a deeper understanding of their respective industries.
International University of Sarajevo
2023-07-07 17:12:07
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3715
Periodicals of Engineering and Natural Sciences; Vol 11, No 4 (2023)
en
Copyright (c) 2023 Siraj Abbas, Nasser Izadinia, Gholamhossein Kiani
oai:ojs.pen.ius.edu.ba:article/2304
2022-01-10T18:45:20Z
pen:ART
cam 3u
"210915 2021 eng "
dc
Mathematical modelling and development of a computational algorithm for the study of thermo-stressed state of a heat-resistant alloy
Kenzhegulov, Beket; Department of Mathematics and Methods of Teaching Mathematics, Kh. Dosmukhamedov Atyrau University
Tuleuova, Raigul; Department of Mathematics and Methods of Teaching Mathematics, Kh. Dosmukhamedov Atyrau University
Myrzasheva, Aigul; Department of Mathematics and Methods of Teaching Mathematics, Kh. Dosmukhamedov Atyrau University
Shazhdekeyeva, Nurgul; Department of Mathematics and Methods of Teaching Mathematics, Kh. Dosmukhamedov Atyrau University
Kabylkhamitov, Galymzhan; Department of Mathematics and Methods of Teaching Mathematics, Kh. Dosmukhamedov Atyrau University
Thermal expansion, Modulus of elasticity, Thermal stress state, Displacement discretisation, Stress strain
The problem of increasing the thermal stability of structural elements made of heat-resistant metals and alloys operating in a complex force and thermal field is one of the key priorities of modern high technology research. The most important case is the study of the thermal stability of structural elements in real conditions of heat fluxes with varying intensity, with a complex configuration of heat-insulated local surfaces and internal point heat sources. Many basic load-bearing structural elements operating in a large thermal field (elements of gas turbine and jet engines, etc.), are made of heat-resistant alloys. The physical feature of such alloys is that the coefficient of thermal expansion and the modulus of elasticity of the material strictly depends on the temperature distribution field, that is, the coefficients are a function of temperature. The purpose of this study is to simulate a thermo-stressed state in rod elements of a structure based on the law of conservation of energy, in the presence of a heat flux applied on the lateral surface, which varies along the coordinate in a linear manner. To solve the outlined problem, a potential energy minimisation method is used in combination of a quadratic finite element with three nodes. As a result, from the condition of the minimum of the functional defining the potential energy, a resolving system of linear algebraic equations is obtained. All possible natural boundary conditions are taken into account. In this system, all integrals used are calculated analytically. Moreover, the law of conservation of energy is fulfilled for each of the equations of the resulting system. As a result, the values of displacement, deformation and stresses were calculated, as well as the values of elastic temperature and thermoelastic components of deformations and stresses for a specific example.
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2304
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Beket Kenzhegulov, Raigul Tuleuova, Aigul Myrzasheva, Nurgul Shazhdekeyeva, Galymzhan Kabylkhamitov
oai:ojs.pen.ius.edu.ba:article/1265
2020-06-22T11:58:44Z
pen:ART
cam 3u
"200430 2020 eng "
dc
Modeling robust regression to factors affecting the exchange rate of Iraqi Dinar
Rasheed, Husam abdul-Razzak
Rasheed, Aseel Abdul-Razzak
Al-saffar, Rawaa Salh
Regression analysis is an important statistical tool iteration used, applied in scientific and practical studies. It is considered the method of least squares most methods of estimating the regression model. However, they are affected when there are outlier values in the data of the research. Hence, it is necessary to find robust methods to estimate the regression model.
In this paper, a robust regression model for the exchange rate was built based on influencing factors of GDP, inflation, exposure index and trade. The robust model was found to be more accurate in the Data Visualization, and the conclusions were consistent with economic theory.
International University of Sarajevo
2020-05-08 00:19:24
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1265
Periodicals of Engineering and Natural Sciences; Vol 8, No 2 (2020)
en
Copyright (c) 2020 Husam abdul-Razzak Rasheed, Aseel Abdul-Razzak Rasheed, Rawaa Salh Al-saffar
oai:ojs.pen.ius.edu.ba:article/2665
2023-07-07T15:31:58Z
pen:ART
cam 3u
"220207 2022 eng "
dc
The phenomenon of individual tourism marketing communication of chef Burak and its role in increasing tourism demand - Istanbul's city restaurant model
Shamto, Samir Khalil Ibrahim
Al-waeli, Nadia Saleh Mahdi
Information and communication technology is one of the essential products of the technology and information revolution. You have made a significant and noticeable contribution to the transition from the stereotypical nature of production, work, marketing, supply, and demand. In addition, the significant changes that have followed in social life and the means of communication have become an (automated) nature because technology has added to them the color of scientific and cognitive development. During these significant changes, the method of trading goods between the producer and the consumer has become more transparent and fast due to the characteristics of the means of communication used. The importance of this matter was addressed in the research, which deals with the extent of modern technology, especially social media, its role in tourism marketing, and its importance in the changes in demand levels. Here, it relied on a unique marketing phenomenon by the Turkish chef Burak, how he managed the marketing method based on social media, and his departure from the stereotypical marketing of his products.
International University of Sarajevo
2021-12-26 21:58:18
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2665
Periodicals of Engineering and Natural Sciences; Vol 10, No 1 (2022)
en
Copyright (c) 2022 Samir Khalil Ibrahim Shamto, Nadia Saleh Mahdi Al-waeli
oai:ojs.pen.ius.edu.ba:article/1691
2020-12-21T11:35:14Z
pen:ART
cam 3u
"201109 2020 eng "
dc
The role of the flexibility of processes in measurement the relation be-tween the supply chain & development of a product Applied research: Al Doawra refinery
Yousif Abd Alrda, Nagham
Atiyah Khalaf, Batool
Waleed Abd alrahman, Hind
The researchers treated the problem of processing chain efficiency in Masfa Al doawra l Baghdad, which is owned by the ministry of petroleum. In addition to the productivity flexibility of filter weakness, which leads to its weakness in reacting to the demands of the variable customers. The work research’s goal was to notice the reality of the flexibility concept in creating value for the customer in the organization. And submitting a suggestion to the company about the trade-off standards between the processors, in a limit that is suitable with the new followed standards. To achieve these goals, the researchers used the measure to stagnate the pentagram, to confirm the research basics, and by using the measurements of central tendency (Arithmetic mean, standard deviation, critical ratio, variation coefficient). Depending on the spss program & AMOS program to analyze the relationship between the research variables, and the role of the medium variable among. The research reached that there is a high level of disagreement among the re-spondents about the supplier's after-sale services in the supply of raw materials and materials to the organization. The organization should establish policies that obligate the supplier to provide these services when needed. The organiza-tion is keen to maintain the high coordination process between it and the intermediaries and distributors to realize the importance of providing information by the parties in the right time and place and disclosure and availability when the request.
International University of Sarajevo
2020-10-02 11:04:11
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1691
Periodicals of Engineering and Natural Sciences; Vol 8, No 4 (2020)
en
Copyright (c) 2020 Nagham Yousif Abd Alrda, Batool Atiyah Khalaf, Hind Waleed Abd alrahman
oai:ojs.pen.ius.edu.ba:article/390
2020-09-18T14:29:09Z
pen:ART
cam 3u
"190429 2019 eng "
dc
Model for the assessment greenhouse gas emissions from road transport
Trofimenko, Yuriy V.; Moscow Automobile and Road Construction State Technical University (MADI)
Komkov, Vladimir I.; Moscow Automobile and Road Construction State Technical University (MADI)
Donchenko, Vadim V.; Joint-stock Company «Scientific and Research Institute of Motor Transport», Moscow, Russia
Potapchenko, Timur D.; Moscow Automobile and Road Construction State Technical University (MADI)
Road transport, Mobile and stationary facilities, Greenhouse gas emissions, Emission forecast
A three-level model for estimating greenhouse gas (GHG) emissions by mobile and stationary road transport facilities of a state or region, proposed in this article, takes account into GHG emissions from a vehicle fleet (mobile objects) and road transport infrastructure (network of car services, road network of various categories).
Additionally, it has been developed the intellectual system which evaluates the reliability of the array of initial data, by increasing the range and adjusting (if necessary) the values of individual indicators, as the result we achieving the convergence of the calculating GHG emissions from motor vehicles according to the models of all three levels of assessment. This ensures verification of the obtained gross GHG emissions.
Evaluation of greenhouse gas emissions using three-level model was carried out for St. Petersburg and the Leningrad Region (Russian Federation), they shown the possibility of reducing by 2030 by 3.2 ... 12.4% of gross GHG emissions by motor transport of the Russian Federation in comparison with 2015. For St. Petersburg and the Leningrad Region, both the reduction of gross GHG emissions by road transport (12.7% innovative scenario) and their growth (4.8% inertial scenario) are expected during the forecast period. At the same time, both for the St. Petersburg and the Leningrad Region and for the state as a whole, a significant reduction in gross GHG emissions by road transport is expected in the period after 2025 due to the intensive replacement of cars on oil fuel by electric vehicles and hybrids, changes in the transport behavior of the population, the development of public passenger transport and cycling, the introduction of autonomous vehicles, etc.
International University of Sarajevo
2019-02-13 15:51:33
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/390
Periodicals of Engineering and Natural Sciences; Vol 7, No 1 (2019)
en
Copyright (c) 2019 Vladimir Komkov
oai:ojs.pen.ius.edu.ba:article/1926
2021-07-01T08:15:53Z
pen:ART
cam 3u
"210606 2021 eng "
dc
Comprehensive review of data exchange in vehicle-to-pedestrian communications: State of the art
Kareem, Zahraa Hashim
Ramli, Khairun Nidzam bin
Jawad, Alyaa Mohammed
Malik, Rami Qays
Ameen, Hussein A.
Abdul Zahra, Musaddak M.
Pedestrian safety is a serious problem in transportation systems because pedestrian and vehicle crashes often result in fatalities amongst vulnerable road users. A vehicle-to-pedestrian (V2P) communication system allows data exchange between pedestrians and vehicles to prevent or minimise potential dangers of accidents from happening. This work aimed to analyse and review the previous work associated with information exchange in the V2P communication system and classify the existing technology utilized for this purpose. Motivation, accessible problems confronting researchers, and suggestions posed to researchers to develop this critical area of study have been among the reasons considered to enhance awareness of the field's numerous qualitative facets in reported investigations and properties. All of the papers have been divided into four categories: growth, analysis, and survey, FRAMEWORK, and data exchange in the V2P communication system. V2P communication is an area that necessitates automated solutions, instruments, and techniques that allow pedestrian detection and prediction. Pedestrian identification and data sharing on V2P have been the subject of several experiments in order to support pedestrian protection techniques. The reasons, open barriers that hinder the technology's usefulness, and authors' suggestions have been used to identify the essential characteristics of this evolving sector. This study is intended to provide researchers with new resources and enable them to focus on the holes that have been found.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1926
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) Zahraa Hashim Kareem, Khairun Nidzam bin Ramli, Alyaa Mohammed Jawad, Rami Qays Malik, Hussein A. Ameen, Musaddak M. Abdul Zahra
oai:ojs.pen.ius.edu.ba:article/776
2020-09-18T14:28:02Z
pen:ART
cam 3u
"191018 2019 eng "
dc
PDA: A private domains approach for improved MSB steganography image
I.Mohammed Ali, Sura
Ghazi Ali, Maryam
Abd Zaid Qudr, Lateef
Steganography is one of the secure techniques of protecting data inside a cover object. Images are the most popular cover objects for Steganography. It provides secret message between users. The current paper presents an enhanced Most Significant Bit (MSB) technique. In this paper, a Private Domains Approach (PDA) is proposed; each domain consists of RGB of a pixel of cover image. Bit No.5 is applied to store the secret information in light of the bit that achieved highest steganography rate and the less probability of error rate.Consequently, this technique is allowing an improved version of MSB technique based on Mean-Squared Error (MSE), Peak Signal-to-Noise Ratio (PSNR). The experimental results show that our schemes perform well in terms of image quality. Generally; MSB technique produced the best stego-image quality in this paper.
International University of Sarajevo
2019-08-19 12:14:39
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/776
Periodicals of Engineering and Natural Sciences; Vol 7, No 3 (2019)
en
Copyright (c) 2019 Sura I.Mohammed Ali, Maryam Ghazi Ali, Lateef Abd Zaid Qudr
oai:ojs.pen.ius.edu.ba:article/1383
2020-06-22T11:58:47Z
pen:ART
cam 3u
"200601 2020 eng "
dc
Analyzing big data sets by using different panelized regression methods with application: Surveys of multidimensional poverty in Iraq
Salih, Ahmed Mahdi
Hmood, Munaf Yousif
Poverty phenomenon is very substantial topic that determines the future of societies and governments and the way that they deals with education, health and economy. Sometimes poverty takes multidimensional trends through education and health. The research aims at studying multidimensional poverty in Iraq by using panelized regression methods, to analyze Big Data sets from demographical surveys collected by the Central Statistical Organization in Iraq. We choose classical penalized regression method represented by The Ridge Regression, Moreover; we choose another penalized method which is the Smooth Integration of Counting and Absolute Deviation (SICA) to analyze Big Data sets related to the different poverty forms in Iraq. Euclidian Distance (ED) was used to compare the two methods and the research conclude that the SICA method is better than Ridge estimator with Big Data conditions.
International University of Sarajevo
2020-05-08 00:19:24
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1383
Periodicals of Engineering and Natural Sciences; Vol 8, No 2 (2020)
en
Copyright (c) 2020 Ahmed Mahdi Salih, Munaf Yousif Hmood
oai:ojs.pen.ius.edu.ba:article/3769
2023-09-05T14:44:10Z
pen:ART
cam 3u
"230830 2023 eng "
dc
Sustainability and environmental attitudes towards specific problems in Latin-American university students
Limo, et al., Fernando Antonio Flores
University sustainability is a notion with tremendous transformative potential. Knowledge is essential to understand how colleges communicate it to their students in order to assess their potential for transformation. The objective of this study was to assess the level of training in sustainability and associate it with environmental attitudes towards specific problems of university students in Latin-american. Through a quantitative, correlational and cross-sectional design, two scales were applied to measure the study variables. The population consisted of 3456 university students from 15 public and private universities in Latin-american. Using the simple random probability sampling method with a confidence level of 95% and a margin of error of 5%, the sample consisted of 383 university students. It was found that there was a highly significant relationship between training in sustainability and the environmental attitude towards specific problems of university students in Latin-american. Universities not only have an impact on the improvement of the quality of life of the university community, but they should also try to intervene in the spaces under a sustainable approach, understanding that students should be the main actors for environmental care.
International University of Sarajevo
2023-07-07 17:12:07
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3769
Periodicals of Engineering and Natural Sciences; Vol 11, No 4 (2023)
en
Copyright (c) 2023 Authors
oai:ojs.pen.ius.edu.ba:article/2336
2022-01-10T18:45:45Z
pen:ART
cam 3u
"210917 2021 eng "
dc
Verification of mechanical properties and surface topography of PH1 stainless steel samples obtained by selective laser melting
Babaytsev, Arseniy V.; Department of Mechanics of Nanostructured Materials and Systems, Moscow Aviation Institute (National Research University)
Astapov, Alexey N.; Department of Advanced Materials and Technologies for Aerospace Applications, Moscow Aviation Institute (National Research University)
Ripetskiy, Andrey V.; Department of Engineering Graphics, Moscow Aviation Institute (National Research University)
Sha, Minggong; Northwestern Polytechnical University
Metal alloys, Microstructure, Roughness, Mapping, Viscous fracture
Nowadays, additive technologies are used to create physical models, prototypes, samples, tooling, and the production of plastic, metal, ceramic, glass, composite components, and components made of biomaterials. The greatest technological interest is the production of final parts from metal alloys. This paper presents the results of studies of the topography of differently oriented surfaces of PH1 stainless steel samples made using the method of selective laser melting. The surfaces were studied in the plane of construction, perpendicular to the platform, at angles of 45o and 135o. For each surface under consideration, the roughnesses Ra, Rz were determined and a profile was constructed. The findings showed high stability of the topography of the surface layer of the grown material. To confirm the quality of the obtained samples, they were synthesised and tensile tests were carried out. The established characteristics of the elastic modulus, the tensile strength and the corresponding deformations are consistent with the previously determined properties of samples grown using selective laser melting technology and datasheet specifications. According to the results of mechanical tests, the microstructure of the fracture surfaces of the samples was investigated. It is established that the destruction of samples under tension occurs by a viscous mechanism with the implementation of a combination of shear and pit-porous types of destruction. The study of the topography of differently oriented surfaces is carried out – in the plane of construction, perpendicular to it and at angles to the platform 45 and 135o. It is shown that the best surface quality corresponds to two planes – parallel and perpendicular to the plane of the construction platform. The average values of their roughness were Ra ~ 0.6 µm and Rz ~ 4 µm. The quality of the surfaces located at an angle is significantly inferior to the first two. A change in the surface quality depending on the angle of inclination was also observed.
International University of Sarajevo
Ministry of Science and Higher Education of the Russian Federation
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2336
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Arseniy V. Babaytsev, Alexey N. Astapov, Andrey V. Ripetskiy, Minggong Sha
oai:ojs.pen.ius.edu.ba:article/1306
2020-06-22T11:58:45Z
pen:ART
cam 3u
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Optimal statistical method to predict subsurface formation permeability depending on open hole wireline logging data: A comparative study
Tawfeeq, Yahya J.
Najmuldeen, Mohammed Y.
Ali, Ghassan H.
One crucial parameter related to subsurface formations fluid flowing is the rock permeability. Generally, rock permeability reflects the formation capability to transmit fluid. Its significance reflected through several methods existing utilized to predict it, including rock core measurements, empirical correlation, statistical techniques, and other methods. The best and more exact permeability findings are acquired in the laboratory from core plug cored from a subsurface formation. Unfortunately, these experiments are expensive and tedious in comparison to the electrical and electronic survey techniques as wireline well logging methods, for example, not exclusively. The current study compares and discusses different methods and approaches for predicting permeability via wireline logs data. These approaches include empirical correlations, non-parametric statistical approaches, flow zone indicator FZI approach. In this research, we introduced a comparatively new process to predict permeability by the combination of FZI method and the artificial neural networks method. All these approaches are performed using well logs data to the non-homogenous formation, and findings are placed in comparison with permeability from laboratory experiments, which is regarded to be standard. Several statistical criteria, such as ANOVA test and regression analysis, were used to determine the reliability of calculated permeability results.
International University of Sarajevo
2020-05-08 00:19:24
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1306
Periodicals of Engineering and Natural Sciences; Vol 8, No 2 (2020)
Copyright (c) 2020 Yahya J. Tawfeeq, Mohammed Y. Najmuldeen, Ghassan H. Ali
oai:ojs.pen.ius.edu.ba:article/2722
2023-07-07T15:31:59Z
pen:ART
cam 3u
"220217 2022 eng "
dc
Analysis of the problems of electricity in Iraq and recommendations of methods of overcoming them
Altai, Hisham Dawood Salman
Abed, Faisal Theyab
Lazim, Mohammed H.
ALRikabi, Haider TH. Salim
The Iraqi power sector is at a critical stage that requires urgent reforms. Concerns regarding the ability of the system to provide steady power and its operational inefficiencies, in general, have been expressed by the industry and academia. Currently, the power industry is experiencing one of the highest demand growth in the world, and given that it is capital intensive, it takes up a large share of Iraq’s government capital investment program. More so, there is a huge increase in the financial burden of the Iraqi electricity supply industry due to the high subsidies required for the coverage of the recurrent expenditure. This subsidy is regarded as one of the highest in the world, given the extremely low traffic which does not cover up to 20% of the periodic expenditure. Apart from the huge subsidy in electricity tariff, another major and indirect socioeconomic subsidy is the fact that the industry is over-staffed with over 50,000 employees which under normal circumstances should not be more than 15,000. The estimated annual cost of the aforementioned inefficiencies and insufficient power supply is about $3 to 4 billion. In 2013, about 70% of the generated electricity was lost, and this loss is in three areas, including commercial, technical, and administrative losses. Therefore, there is a need for massive reforms that are targeted at addressing the entire issue. This can be achieved through the engagement of the private sector, higher competition, and the introduction of novel regulatory and legislative frameworks. In addition to that, the available sources of energy in Iraq need to be optimized alongside gas usage related to oil extraction, while solar energy in Iraq is explored and the solar hybridization of the current power stations.
International University of Sarajevo
2021-12-26 21:58:18
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2722
Periodicals of Engineering and Natural Sciences; Vol 10, No 1 (2022)
en
Copyright (c) 2022 Hisham Dawood Salman Altai, Faisal Theyab Abed, Mohammed H. Lazim, Haider TH. Salim ALRikabi
oai:ojs.pen.ius.edu.ba:article/1735
2020-12-21T11:35:28Z
pen:ART
cam 3u
"201206 2020 eng "
dc
Punching strength behavior of reinforced concrete slabs with chips waste tire rubber
Sahib, Firas Nadhim
Al-Mutairee, Hayder M.K.
Every year waste in millions tons are accumulated in the globe and much of it is non-biodegradable in nature, e.g. waste vehicle tires. In addition, waste recycling is energy consuming and pollution producing. Moreover, in this research, an experimental study is carried out to explore the behavior of chips rubberized concrete (CRC) in punching shear of flat plates. The experimental program comprises 10 specimens designed to fail by punching. The investigated parameters were the model type column, chips rubber ratio that used instead of coarse aggregate. Two cases are classified according to shape of column; square and rectangular. Each case consists of five specimens, the first specimen casted by normal strength concrete (NSC) and the other casted with CRC, by 5%, 10%, 15%, and 20%. The experimental results present that increasing chips rubber instead of coarse aggregate in two cases studies (square, and rectangular column) from zero to 20% shows a drop in the punching shear capacity by range of 13.54%, and 18.52%, and a reduction in the initial and secant stiffness by (16.06%, 25.19%), and (24.44%, 26.88%) respectively. Also, using 20% chips waste rubber increased the central deflection of two cases at service load by (37.39%, 47.28%), and increased the central ultimate deflection of the plates by about (24%, 24.58%) respectively. Furthermore, 20% replacement of coarse aggregate by rubber increased the ductility by (20.38%, 15.60%), and increased the energy absorption index significantly by 41.41%, and 28.75%, and led to decrease cracks width at service load by 36.11%, and 44.12% for the two cases respectively. From comparison between theoretical and experimental results one can get three equations relate the deficiency of punching shear capacity and chips rubber ratio, and concluded that the optimal replacement was by using 10% to15%. It can be inferred that the experimental results for square columns (S-R) specimens at all replacement percentages from zero to 20% less constrictive than ACI-code equations, whereas for rectangular columns (R-R) specimens the ACI-code equations can be used to replace 15%, after that the correction factor must be applied
International University of Sarajevo
2020-10-02 11:04:11
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1735
Periodicals of Engineering and Natural Sciences; Vol 8, No 4 (2020)
en
Copyright (c) 2020 Firas Nadhim Sahib, Hayder M.K. Al-Mutairee
oai:ojs.pen.ius.edu.ba:article/434
2019-05-16T14:48:08Z
pen:ART
cam 3u
"190509 2019 eng "
dc
Finger vein recognition using two parallel enhancement ppproachs based fuzzy histogram equalization
Jumaa, Shereen.S.
Zidan, Khamis
This paper evaluates a set of enhancement stages for finger vein enhancement that not only has low computational complexity but also high distinguishing power. This proposed set of enhancement stages is centered around fuzzy histogram equalization. Two sets of evaluation are carried out: one with the proposed approach and one with another unique approach that was formulated by rearranging and cropping down the preprocessing steps of the original proposed approach. To extract features, a combination of Hierarchical Centroid and Histogram of Gradients was used. Both enhancement stages were evaluated with K Nearest Neighbor and Deep Neural Networks using 6 fold stratified cross validation. Results showed improvement as compared to three latest benchmarks in this field that used 6-fold validation.
International University of Sarajevo
2019-02-13 15:51:33
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/434
Periodicals of Engineering and Natural Sciences; Vol 7, No 1 (2019)
en
Copyright (c) 2019 Shereen.S. Jumaa, Khamis Zidan
oai:ojs.pen.ius.edu.ba:article/2029
2021-07-01T08:16:08Z
pen:ART
cam 3u
"210612 2021 eng "
dc
Modification of roadbed soil by crushed glass wastes
Mosa, Ahmed Mancy
Al-Dahlaki, Mohammed Hussin
Salem, Lubna Abdulrahman
This study aims to use the crushed glass obtained from waste flasks to improve the properties of the weak roadbed soil. The study included crushing and powdering waste flasks. Afterward, the crushed glass was sieved and separated into three classes depending on the particle size: class A contains particles with diameter less than 4.75 mm and more than 1.18 mm, class B contains particles with diameter less than 1.18 mm and more than 0.08 mm, and class C contains particles with diameter less than 0.08 mm. For each of these classes, 6 different crushed glass contents were mixed with a weak roadbed soil to study their influences on its engineering properties. To attain this objective, four laboratory tests were applied: California Bearing Ratio (CBR), which determines the bearing value and the swelling ratio, triaxial compression test under cyclic loading, which determines the resilient modulus (MR), and the Oedometer test, which determines the compressibility coefficients (Cc and Cr). The results showed that increasing the crushed glass content enhances the tightness of the roadbed soil and reduces its volume changeability. Nevertheless, the use of class C showed the highest enhancement compared to the other two classes. Compared with original roadbed soil, CBR values and resilient modulus (MR) values of the roadbed soil samples mixed with 18% of class C of the crushed glass were increased to more than 8 times and 4 times respectively. In addition, swelling ratio, Cc, and Cr were reduced to 53%, 50%, and 35% respectively.
International University of Sarajevo
2021-04-13 13:54:57
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2029
Periodicals of Engineering and Natural Sciences; Vol 9, No 2 (2021)
en
Copyright (c) 2021 Ahmed Mancy Mosa, Mohammed Hussin Al-Dahlaki, Lubna Abdulrahman Salem
oai:ojs.pen.ius.edu.ba:article/823
2020-09-18T14:28:09Z
pen:ART
cam 3u
"191104 2019 eng "
dc
A highly-verified biometric recognition system using an ultra-speed specifically-developed finger vein sensor
Zidan, Khamis A.
Jumaa, Shereen S.
Currently, Biometrics has been utilized the top five modality of face, voice, IRIs, fingerprint, and palm to identify individuals. Comparatively, these Biometrics systems need complex computation to be slow and an easy target to hack. Alternatively, this work proposes a novel biometrics system of highly secured recognition with low computation time using specifically designed biometrics sensor. Consequently, finger vein recognition has been developed. Although, this recognition requires high point of safety measures comes with its individual experiments. The most prominent one being the vein pattern is very difficult to extract because finger vein images are constantly low in quality, seriously hampering the feature extraction and classification stages. Sophisticated algorithms need to be designed with the conventional hardware for capturing finger-vein images is modified by using red Surface Mounted Diode (SMD) leds. For capturing images, Canon 750D camera is used with micro lens. The integrated micro lens gives better quality images, and with some adjustments it can also capture finger print. Results have been comparatively improvement for SDUMLA-HMT database and extensively evaluated with k-nearest neighbors (KNN) algorithm. The (KNN) algorithm is a simple, easy-to-implement supervised machine learning algorithm that can be used to solve both classification and regression problems. KNN calculations are highly accurate in test data. Using stratified 6- fold analysis on all fingers of all hands in collected database, a maximum accuracy of 100% was achieved with an EER of 0% when select right hand and middle finger, based on the analysis of the 106 persons present in the data set. Many approaches have been used to optimize vein image quality. The proposed system has optimum results as compared to existing related works. The work novelty is due to the hardware design of the sensor within the finger-vein recognition system to obtain, simultaneously, finger vein and finger print at low cost, unlimited users for one device and open source.
International University of Sarajevo
2019-08-19 12:14:39
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/823
Periodicals of Engineering and Natural Sciences; Vol 7, No 3 (2019)
en
Copyright (c) 2019 Khamis A. Zidan
oai:ojs.pen.ius.edu.ba:article/1385
2020-06-22T11:58:49Z
pen:ART
cam 3u
"200614 2020 eng "
dc
Bayesian extensions on Lasso and adaptive Lasso Tobit regressions
Alhusseini, Fadel Hamid Hadi
Flaih, Ahmad Naeem
Alshaybawee, Taha
Since lasso method launched, a lot of applications and extensions were run on it which made it to become deeply widely used in various discipline. In this paper, we proposed the Scale Mixture of Normals mixing with Rayleigh (SMNR) distribution on their variances to represent the double exponential distribution. Hierarchical model formula have derived with Gibbs sampler for SMNR. The proposed models; Bayesian Tobit Adaptive Lasso (BTAL) and Bayesian Tobit Lasso (BTL) models are illustrated using simulation example and a real data example through the prediction accuracy using the estimated relative efficiency with different sample. This is the first work that discussed regularization regression models under SMNR.
International University of Sarajevo
2020-05-08 00:19:24
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1385
Periodicals of Engineering and Natural Sciences; Vol 8, No 2 (2020)
en
Copyright (c) 2020 Ahmad Naeem Flaih, Taha Alshaybawee, Fadel Hamid Hadi Alhusseini
oai:ojs.pen.ius.edu.ba:article/164
2019-12-30T14:08:07Z
pen:ART
cam 3u
"180319 2018 eng "
dc
Control and estimation of a quadcopter dynamical model
Kurak, Sevkuthan; IUS, FENS
Hodzic, Migdat; IUS, FENS, SE, Electrical and Electronics
Control Theory; Quadcopter Control
LQ; LQG; Kalman Filtering
The main motivation for this paper is to apply LQ and LQG methodologies for quadcopter control system. The developed control system is for both the rectangular position (xy) and altitude (z) as well as the orientation (attitude - angles around the axes) based on 6-Degree of Freedom (6DOF) mathematical model. 6DOF refers to the model with 3 linear and 3 angular motions. The altitude and attitude controllers are designed and the results presented in both the continuous and the discrete time cases. For the controller design, a nonlinear mathematical model was obtained first for 6DOF. The next step was to linearize the nonlinear model in hovering mode, and the final step was the reduction of the resulted linear model to be used as starting model for the controller design. The reduced linear model was tested for controllablity and observability. The control goal was to track a spatial trajectory with the quadcopter center of gravity under environment disturbances and sensor measurement errors. For this purpose, designed LQ controller was augmented by Kalman Filter state observer. The resultant controllers provide precise and robust performance for an input reference signal and for a regulation problem. After the transient response (of order of few seconds) the tracking error is acceptable which provides safe handling even under disturbances and measurement noises. The transient response can be further reduced by controllers fine tuning.
International University of Sarajevo
2018-02-27 19:04:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/164
Periodicals of Engineering and Natural Sciences; Vol 6, No 1 (2018)
en
Copyright (c) 2018 Migdat Hodzic, Sevkuthan Kurak
oai:ojs.pen.ius.edu.ba:article/3381
2023-01-23T17:20:45Z
pen:ART
cam 3u
"221231 2022 eng "
dc
Development of a mathematical model of video monitoring based on a self-organizing network of unmanned aerial vehicles
Jameel, Jalal Qais
Tareq Nasser Mahdi, , et al.
The article presents the development of a mathematical model of video monitoring based on a self-organizing network of unmanned aerial vehicles. The necessity of developing models and algorithms for providing geoecological monitoring using a wireless self-organizing network based on unmanned aerial vehicles is shown. Models are presented that allow calculating the speed of information transfer in the network and reducing the number of failures in the process of transmitting video data. With the help of models, it is possible to substantiate the power of network transmitting devices, at which the losses of transmitted packets are significantly reduced. The practical use of the model contributes to the achievement of the required quality of video surveillance in a wireless self-organizing network of unmanned aerial vehicles in the process of geoecological monitoring.
International University of Sarajevo
2022-12-08 17:57:31
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3381
Periodicals of Engineering and Natural Sciences; Vol 10, No 6 (2022)
en
Copyright (c) 2022 Jalal Qais Jameel, , et al. Tareq Nasser Mahdi
oai:ojs.pen.ius.edu.ba:article/3891
2024-01-05T13:43:54Z
pen:ART
cam 3u
"231208 2023 eng "
dc
Energy exergetic and economic analysis (3E) in a flat solar collector with thermal storage for air heating
Castillo-Leon, N. Y.; Unidades Tecnológicas de Santander
Zanabria-Ortigoza, N. D.
Rincon-Quintero, A. D.; Unidades Tecnológicas de Santander
University of the Basque Country UPV/EHU
Sandoval-Rodriguez, C. L.; Unidades Tecnológicas de Santander
University of the Basque Country UPV/EHU
Del Portillo-Valdes, Luis Alfonso; University of the Basque Country UPV/EHU
Exergetic analysis, Solar collector, Solar radiation, Thermodynamic performance
Solar energy has been considered as a carrier of primary energy to sustain life, representing a renewable energy resource that strengthens industrialization through its use as the main source of energy. This study evaluates the energy, exergetic and economic yields through an analytical approach applied to experimental data obtained in a flat solar collector (SAC) with paraffin as phase change material (PCM) and "V" absorber plate geometry, intended for air heating. The results of the investigation indicated that the energy, exergetic, and exergy destroyed efficiency of the SAC were 71.24%, 16.96%, and 79.66%, respectively. This research allowed us to carry out a sensitivity analysis applied to the results of the thermodynamic variables of the equipment: thermal efficiency, air mass flow and solar radiation; where an improvement in the thermodynamic yields is evidenced by obtaining a thermal efficiency of 91.25%, exergetic efficiency of 61.03% and a decrease in exergy destroyed up to 35.04% of the values obtained experimentally. Through the economic analysis, it was determined that the levelized cost of heating the SAC is 0.0927 USD/kWh, indicating that the project is economically profitable, due to the use of solar energy instead of electrical energy as an input source. Lastly, this research is expected to be a contribution that can support the authors of subsequent projects interested in this technology.
International University of Sarajevo
Unidades Tecnológicas de Santander
2023-12-08 19:04:15
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/3891
Periodicals of Engineering and Natural Sciences; Vol 11, No 6 (2023)
en
http://pen.ius.edu.ba/index.php/pen/article/download/3891/8810
Copyright (c) 2023 Authors
oai:ojs.pen.ius.edu.ba:article/2389
2022-01-10T18:46:19Z
pen:ART
cam 3u
"211007 2021 eng "
dc
Simulation of a control system for the accident-free flight of three UAVs in the V formation in a heterogeneous environment
Toleu, Altynbek Sh.; Department of System Analysis and Management
L.N. Gumilyov Eurasian National University
Zakarina, Aina Zh.; Department of System Analysis and Management
L.N. Gumilyov Eurasian National University
Convergence; Divergence; Course; Distance; Movement
Modern methods of creating groups of unmanned aerial vehicles (UAVs) require the use of complex (generalised) criteria, introduced mathematical models in the process of optimising the parameters of the UAV components. Such models should simulate the operation of an unmanned aerial vehicle when performing its task. The study considers strategies for diverging dangerously approaching UAVs using areas of dangerous courses and speeds. First, procedures were performed to establish the dangerous course areas of one UAV and the speeds of the second UAV, taking into account their ratio of speeds and dynamics. The areas for the case of UAV with insignificant transients of changes in courses and speeds, the duration of which can be neglected, is provided. In addition, procedures of the establishment of areas of dangerous courses of one UAV and the speeds of the second UAV with significant inertia are considered. Methods of the establishment of areas in the event of a decrease in the speed of the second UAV by active or passive braking are developed. Examples of choosing a safe manoeuvre in a situation of dangerous convergence of two UAVs are given. A more complex situation of approaching two UAVs in the presence of an interfering third UAV is also considered, and a method for choosing a safe manoeuvre is proposed, taking into account the interfering third UAV. Moreover, for such a situation, two alternative procedures for choosing a safe manoeuvre are proposed. The result of solving this problem was a method for establishing the area of dangerous courses and speeds of UAVs, taking into account the inertia-braking characteristics when determining a safe joint divergence manoeuvre taking into account the presence of a third UAV that provides interference.
International University of Sarajevo
2021-09-14 18:03:16
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2389
Periodicals of Engineering and Natural Sciences; Vol 9, No 4 (2021)
en
Copyright (c) 2021 Altynbek Sh. Toleu, Aina Zh. Zakarina
oai:ojs.pen.ius.edu.ba:article/2793
2023-10-13T09:54:46Z
pen:ART
cam 3u
"220314 2022 eng "
dc
Mathematical simulation of memristive for classification in machine learning
Hasan, Ammar A
Abdullah, Nada A.Z.
Abbood, Amenah D.
Memristive, machine learning, Anti-Hebbian and Hebbian learning, classification, artificial synapses.
Over the last few years, neuromorphic computation has been a widely researched topic. One of the neuromorphic computation elements is the memristor. The memristor is a high density, analogue memory storage, and compliance with Ohm's law for minor potential changes. Memristive behaviour imitates synaptic behaviour. It is a nanotechnology that can reduce power consumption, improve synaptic modeling, and reduce data transmission processes. The purpose of this paper is to investigate a customized mathematical model for machine learning algorithms. This model uses a computing paradigm that differs from standard Von-Neumann architectures, and it has the potential to reduce power consumption and increasing performance while doing specialized jobs when compared to regular computers. Classification is one of the most interesting fields in machine learning to classify features patterns by using a specific algorithm. In this study, a classifier based memristive is used with an adaptive spike encoder for input data. We run this algorithm based on Anti-Hebbian and Hebbian learning rules. These investigations employed two of datasets, including breast cancer Wisconsin and Gaussian mixture model datasets. The results indicate that the performance of our algorithm that has been used based on memristive is reasonably close to the optimal solution.
International University of Sarajevo
2022-02-21 18:58:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2793
Periodicals of Engineering and Natural Sciences; Vol 10, No 2 (2022)
en
Copyright (c) 2022 Authors
oai:ojs.pen.ius.edu.ba:article/1760
2020-12-21T11:35:51Z
pen:ART
cam 3u
"201217 2020 eng "
dc
Vernacular architecture sustainability principles: A case study of Bosnian stone houses in Idbar village
Halilovic, Maida
To ensure architecture built on sustainable principles and safeguard cultural heritage exposed to destruction are challenges Bosnia is facing in the modern age. The case study of this research, Bosnian village Idbar, with its important historical, traditional and architectural values, showcases the challenges mentioned above, and examines whether Bosnian vernacular rural architecture follows criteria of sustainability and was built on hypothesis that Bosnian vernacular rural architecture fulfills sustainability principles. It was addressed by analytical historical method with auxiliary method of case study which incorporated recordings of site conditions. Sustainability classification of cluster dwelling units in Idbar was examined in accordance to the conventionally accepted sustainability principles: minimal start up environmental impact, contextualization, adaptability, water usage sustainability, energy efficiency, self-conserving, and biodegradability. The research established set of evaluation principles and criteria concerning sustainability of vernacular architecture that can be universally applicable in Bosnia.
International University of Sarajevo
2020-10-02 11:04:11
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/1760
Periodicals of Engineering and Natural Sciences; Vol 8, No 4 (2020)
en
Copyright (c) 2020 Maida Halilovic
oai:ojs.pen.ius.edu.ba:article/2080
2021-12-31T17:01:15Z
pen:ART
cam 3u
"210701 2021 eng "
dc
Performance of microstrip patch antenna for single and array element with and without EBG
Mohsen, Mowafak K.
Jowad, Rawya Read
Mousa, Ayad Hameed
In this paper, a compact single patch antenna and microstrip array antenna with EBG structures at 6 GHzhave been compained. A surface wave effect is often considered undesirable, since it increased the side lobes, and decreased the antenna gain and effeciency. This problem can be solved by utilizing EBG to suppress of such waves. Above the antenna substrate, the mushroom-like EBG were proposed. The side lobes have been improved from −6.8 dB to −16.5 dB, and better directivity was achieved from 5.77 dBi to 10 dBi and the efficiency improved from (80%) to 95% by using EBG with rectangular antenna. Additionally, the array antenna radiation pattern with EBG was improved to −23.5 dB, and the directivity and effeciency have been improved to 14.3 dBi and to 91.5 respctively. These antenna structures have a great eventuality for use in C band application.
International University of Sarajevo
2021-07-03 19:56:46
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/2080
Periodicals of Engineering and Natural Sciences; Vol 9, No 3 (2021)
en
Copyright (c) 2021 Mowafak K. Mohsen, Rawya Read Jowad, Ayad Hameed Mousa
oai:ojs.pen.ius.edu.ba:article/915
2020-09-18T14:27:38Z
pen:ART
cam 3u
"191208 2019 eng "
dc
Study of environmentally sustainable security in wireless sensor networks
Hamoud Hamza, Aseel
Kh. Al-Alak, Saif M.
The popular technology Wireless sensor networks (WSNs) are used in many fields of the application such as the medical, the military, the industry, the agricultural, etc.. In this paper, explains the security issues in the WSNs. Firstly explain the challenges of Wireless Sensor Networks, the security requirements such as Confidentiality, Integrity, Authenticity, Data Freshness, and Availability and the attacks in the WSNs, the security issues are accomplished via these classes: [the encryption algorithms (symmetric, asymmetric, hybrid) , the security protocols such as (Tinysec, SPINS, LEDS, Minisec, LEAP, MASA, Lightweight LCG, MiniSec, VEBEK of WSN), the secure data aggregation, and the key management,etc.]. Also, this paper concentrates on the study researches that fulfill the high level of the security in the WSNs.
International University of Sarajevo
2019-11-12 18:27:21
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/915
Periodicals of Engineering and Natural Sciences; Vol 7, No 4 (2019)
en
Copyright (c) 2019 Aseel Hamoud Hamza, Saif M. Kh. Al-Alak
oai:ojs.pen.ius.edu.ba:article/1450
2020-09-28T16:48:50Z
pen:ART
cam 3u
"200708 2020 eng "
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Obstacles and success factors for the implementing of quality assurance system Case study - Department of Architecture, University of Al-Nahrain
Joseph Rzqoo, Nawfal
Education and Higher Education in particular, are the most important millstones of knowledge economy and community; as Higher Education Institutions essentially contribute to maximize the knowledge capacity of society in research, use, and application through exercising their roles of (teaching) knowledge dissemination, scientific researches (knowledge production) and community service (Application of knowledge). However, the success of these institutions, to prepare qualified human capital for production, to develop creative capabilities for it, and to raise the level of its qualification to meet the needs of society, mainly depends on the success of applying the quality assurance system to its academic institutions. This research seeks to present and discuss concepts and ideas related to the concept of higher education’s quality assurance system, which is a recent introduction in the literature of higher education; to also explore the most important impediments of applying quality assurance system in higher education institutions, specifically in the Department of Architecture - Al-Nahrain University, in addition to diagnosing certain factors that make the application of this system successful. By adopting the opinions of the faculty members of that department, the research came out with a set of impediments, of them (...). In its conclusions, the research also contains a number of factors that serve the success of applying the quality assurance system in the department.
International University of Sarajevo
2020-09-28 17:54:51
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http://pen.ius.edu.ba/index.php/pen/article/view/1450
Periodicals of Engineering and Natural Sciences; Vol 8, No 3 (2020)
en
Copyright (c) 2020 Nawfal Joseph Rzqoo
oai:ojs.pen.ius.edu.ba:article/180
2019-12-30T10:11:46Z
pen:ART
cam 3u
"181019 2018 eng "
dc
Design of flexible spot welding cell for Body-In-White (BIW) assembly
Elangovan, M.; Amrita Vishwa Vidyapeetham
Thenarasu, M.; Amrita Vishwa Vidyapeetham
Narayanan, Sadasivam
Shankar, Prabha Shankar
Mechanical Engineering- Manufacturing- Welding- Fixture design and analysis
Body-In-White Robotic simulation Virtual manufacturing Modular welding fixture Flexible manufacturing system
In this paper, a flexible spot welding cell - which is flexible both at fixture and work cell level is developed to handle multiple Body-In-White (BIW) part varieties. The work-cell is a human-robot cooperative cell where the operator loads/unloads the parts on one side, whereas the robot concurrently performs welding operation on other side. The fixture is made modular and is reconfigured for change in part varieties. The flexibility of proposed work cell and fixture are investigated and validated by considering two different BIW spot weld assemblies. The performance of robot, cycle time estimation for the process, checking of fixtures, collision detection between weld gun and fixtures are evaluated in virtual environment. The flexible weld cell is proved to be compatible for both the BIW assemblies considered for study. The proposed concept shorten the design & fabrication time of fixture - squeezing the investment cost, assembly cost and floor space; besides reducing the cycle time and improving the robot utilization by 30% - 40% when compared to the conventional method.
International University of Sarajevo
2018-10-19 11:55:12
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http://pen.ius.edu.ba/index.php/pen/article/view/180
Periodicals of Engineering and Natural Sciences; Vol 6, No 2 (2018)
en
Copyright (c) 2018 Elangovan M, Thenarasu M
oai:ojs.pen.ius.edu.ba:article/560
2020-09-18T14:28:28Z
pen:ART
cam 3u
"190724 2019 eng "
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Formation of an innovative concept of management on the basis of reconstruction of genetic algorithm of management technology
Martyniuk, Olena
Vitvitskaya, Olga
Lagodiienko, Volodymyr
Krupitsa, Iryna
Technology management; Genome of technology; Genotype reconstruction; Genetic algorithm, Dynamic development
Is proposed a new concept of enterprise management, which is based on the theory of innovation dynamics. The theory of innovation dynamics for the study of enterprises determines that there are always cyclical fluctuations of equilibrium also allows you to determine the genetic features and the ability to follow the options for enterprise development. The authors think that it is possible to regulate vectors of strategic development of the enterprise and to bring it closer to a state of dynamic development by means of the use of adaptive complex of innovative technologies of enterprise management. To form an adaptive innovation technologies complex for the enterprise, the authors propose to determine the genotype of management technology, with pointed out of the gene X - innovation and to form the genome of technology based on the R-dependent components. The reconstruction of genetic algorithm of technology management the authors propose to carry out using quantitative and qualitative indicators of financial, economic, investment and innovative range of the company activity. The analysis of the effectiveness of the formation and transformation of the genetic algorithm took place on the basis of the research of PJSC "Bashtanskiy Cheese Plant" from the period of 2008-2017. According to the results of modeling, was formed a matrix of values for modeling the gene "Innovation", based on the reconstruction of genetic algorithm of technology management.
International University of Sarajevo
2019-06-27 21:31:19
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/560
Periodicals of Engineering and Natural Sciences; Vol 7, No 2 (2019)
en
Copyright (c) 2019 Olena Martyniuk
oai:ojs.pen.ius.edu.ba:article/3178
2023-03-03T16:51:41Z
pen:ART
cam 3u
"230216 2023 eng "
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Artificial extension for a canine with partial forelimb amputation
Rincón-Quintero, Arly Dario; Unidades Tecnológicas de Santander
Universidad del País Vasco UPV/EHU
Garrido Silva, Gianina; Universidad Santo Tomas
Maradey Lázaro, Jessica Gissela; Universidad Autónoma de Bucaramanga
Forero García, Edwin Francisco; Universidad Santo Tomas
Sandoval Rodríguez, Camilo Leonardo; Unidades Tecnológicas de Santander
Amputation, canine, exoprosthesis
When a canine presents a serious case of disease, injury or necrosis, it is imperative to perform an amputation procedure, whatever the affected limb is, since it can minimize the risk of developing pathologies related to tissues, joints and spine, associated with an altered gait and/or unequal distribution of forces in their limbs. Thus, improvement alternatives arise such as prostheses which help to improve the quality of life of canines. The article proposes the development of a functional prototype of prosthesis for canines with partial forelimb amputation through the design and 3D modeling of the prosthesis, together with the selection of the material that adapts to the morphological conditions of the canine. Also, a cushioning system is incorporated to minimize the force of the impact with the ground when performing activities such as jumping, running or walking. Finally, the electronic component is included in the design and the respective electronic and biomechanical tests are carried out to verify its correct operation.
International University of Sarajevo
2023-01-26 14:15:56
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http://pen.ius.edu.ba/index.php/pen/article/view/3178
Periodicals of Engineering and Natural Sciences; Vol 11, No 1 (2023)
en
Copyright (c) 2023 Arly Dario Rincón-Quintero, Gianina Garrido Silva, Jessica Gissela Maradey Lázaro, Edwin Francisco Forero García, Camilo Leonardo Sandoval Rodríguez
oai:ojs.pen.ius.edu.ba:article/22
2019-12-31T13:51:28Z
pen:ART
cam 3u
"131003 2013 eng "
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Quality management in logistics sector: Principles and practice
Selcuk, Sule; International University of Sarajevo
<p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><em><span style="font-size: 10pt; font-family: 'Times New Roman', serif;">As it is the case for production and service sectors, one of the key ways for a logistics company to create sustainable competitive advantage is to differentiate itself from the rest with the quality that it offers. Researchers and </span></em><em><span style="font-size: 10pt; font-family: 'Times New Roman', serif;" lang="EN-GB">practitioners</span></em><em><span style="font-size: 10pt; font-family: 'Times New Roman', serif;"> have developed various quality improvement policies for logistics service providers and each of the policies addresses certain aspects of the business. This study individually evaluates the major quality approaches involved in an attempt to explore prospects of combining them in a way to maximize the benefit of their implementation. To promote applicability the quality approaches are analyzed from the perspective of customers as well as that of implementers of quality programmes.</span></em></p>
International University of Sarajevo
2013-10-02 00:00:00
application/pdf
http://pen.ius.edu.ba/index.php/pen/article/view/22
Periodicals of Engineering and Natural Sciences; Vol 1, No 2 (2013)
Copyright (c) 2014 Periodicals of Engineering and Natural Sciences (PEN)
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