Scopus

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14411/19

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Citation - Scopus: 3
Achieving Business Benefits From ERP Systems
(IGI Global, 2010) Mishra, Alok; Software Engineering
Enterprise resource planning (ERP) systems are becoming popular in medium and large-scale organizations all over the world. As companies have to collaborate across borders, languages, cultures, and integrate business processes, ERPs will need to take globalization into account, be based on a global architecture, and support the features required to bring all the worldwide players and processes together. Due to the high cost of implementation for these systems, organizations all over the world are interested in evaluating their benefits in the short and long terms. This chapter discusses various kinds of business benefits in a comprehensive way in order to justify the acquisition and implementation of ERP systems in organizations in the present global context. © 2025 Elsevier B.V., All rights reserved.
Analytic Hierarchy Process in Determining Aircraft Basic Maintenance Training Durations
(Emerald Publishing, 2025) Açıkel, Gürkan; Alemdaroğlu Temel, Mine; Pilot Training; Airframe and Powerplant Maintenance
Purpose – Currently, in aircraft basic maintenance training, it is determined that various aircraft basic maintenance training organizations around the world apply different basic maintenance durations for the same modules of the same licence categories. Aircraft basic maintenance training organizations are lacking a common curriculum with standard durations for the basic maintenance training modules. To remedy the problems associated with this issue, the purpose of this study is to develop and demonstrate a quantifiable reference (i.e. theoretical training and evaluation content intensity) based scientific theoretical method to determine the durations of the basic theoretical maintenance trainings held for B1.1 and B2 licence categories in aircraft basic maintenance training organizations. Design/methodology/approach – The total basic maintenance training duration was first allocated to basic, theoretical and practical maintenance trainings. The obtained basic theoretical maintenance training duration was then allocated to related modules and submodules by using weighted theoretical training content intensity and weighted theoretical evaluation content intensity, which were obtained by applying a multi-criteria decision-making approach using the analytic hierarchy process (AHP). Findings – In this study, it was found that there is no standardization upon aircraft basic maintenance training organizations for the allocation of the basic maintenance training durations to modules. To remedy this problem, a scientific method, which relies on quantifiable reference bases rather than subjective reasoning, is needed. The reference bases of the proposed theoretical method (i.e. theoretical training and evaluation content intensity) can be tuned with the inclusion of the effect of basic knowledge requirements through multi-criteria decision-making (AHP). The theoretical method proposed in this work is robust in terms of resulting in close proximity values of the basic theoretical maintenance training durations for the common modules of B1.1 and B2 licence categories. The theoretical method is proven to yield greater basic theoretical maintenance training durations for modules having greater theoretical training and evaluation content intensity and lower basic theoretical maintenance training durations for modules having less theoretical training and evaluation content intensity. A distinct similarity in terms of basic theoretical maintenance training durations and the ranking of the modules (in terms of durations) is not present when the average of the training organizations is compared to the results of the theoretical method. A quantifiable reference (i.e. theoretical training and evaluation content intensity) based scientific theoretical method to determine basic theoretical maintenance training durations was developed and demonstrated. Practical implications – Results of this study would especially be useful in an international effort to standardize the different basic theoretical maintenance training durations applied in various aircraft basic maintenance training organizations. Originality/value – To the best of the authors’ knowledge, this study is the first in providing and demonstrating a scientific theoretical method based on a systematic, multi-criteria decision-making approach to determine the durations of the basic theoretical maintenance trainings. © 2025 Elsevier B.V., All rights reserved.
Boundary-Element Method in Microfluidics
(Springer Science+Business Media, 2015) Çetin, Barbaros; Baranoğlu, Besim; Manufacturing Engineering
Clinical Development of Quinone-Based Drugs
(Elsevier, 2024) Altuner, E.E.; Issa, G.; Ozalp, V.C.; Aldemir, O.; Torlak, Y.; Dar, U.A.
This chapter provides a detailed explanation of the clinical investigations, pharmacological effects, and characteristics of quinone and quinone derivatives, along with references to pertinent sources. Although quinones have an oxygen group in their structure, they are quickly oxidized and interact with reactive oxygen species. This demonstrates how quinones work as drugs. Quinones and their derivatives are used as medications to treat a wide range of diseases, including cancer, lung, kidney, brain, and tumor disorders. Each of the following has effects on a different area of health; lapochols, anthraquinones, naphthoquinone and its derivatives, and other wide range of quinone derivatives are thoroughly explored in this chapter. © 2025 Elsevier Inc. All rights reserved.
Common Fixed Point Results for Meir-Keeler-Type Contraction Mappings
(Springer, 2025) Karapńar, Erdal; Cvetković, Marija, S.; Yeşilkaya, Seher Sultan
Meir–Keeler contraction presents an interesting and widely studied topic in the area of Metric Fixed Point Theory. We intend to present several results concerning common fixed problem and the impact of Meir-Keeler-type contractions on this type of results. We will present results on common fixed problem for a Meir–Keeler contraction mapping in various settings—metric space, b-metric space, partial metric space, Branciari metric space, etc. It is our intention to present a comprehensive study on this topic that will present a good starting point for the researchers in the Fixed Point Theory. © 2025 Elsevier B.V., All rights reserved.
Comparative Analysis Of Patch Antennas With Rectangular Slots For Laminate And Wearable Materials At 5g Networks
(Institute of Electrical and Electronics Engineers Inc., 2024) Hakanoglu, B.G.; Agaya, E.; Gulmez, G.; Yalinsu, S.
In this study, new multi-band patch antenna design models are proposed for use in 5G networks. The purpose of the designs is to open rectangular slots on rectangular shaped patch antennas and bring them to the desired operating conditions with parametric analyzes. The designs were carried out by following the same procedure steps using five different dielectric laminate substrate materials, such as RO3003, RT6006, FR4, RO3203, RO6010, and one denim fabric base material. The antennas were compared in terms of return loss, gain and radiation characteristics. Except for the antenna designed with RO3203 at certain values of rectangular slots, radiation at multiple frequencies was obtained at 5G frequencies. With the proposed method, improvement was observed for return loss and bandwidth characteristics in the RO3203 based antenna. This study will be a resource for antenna researchers by revealing the responses of different substrate materials to the same design method for 5G bands in patch antennas. © 2024 IEEE.
A Comparison of Stream Processing Frameworks
(Institute of Electrical and Electronics Engineers Inc., 2017) Karakaya,Z.; Yazici,A.; Alayyoub,M.; Software Engineering; Computer Engineering
This study compares the performance of Big Data Stream Processing frameworks including Apache Spark, Flink, and Storm. Also, it measures the resource usage and performance scalability of the frameworks against a varying number of cluster sizes. It has been observed that, Flink outperforms both Spark and Storm under equal constraints. However, Spark can be optimized to provide the higher throughput than Flink with the cost of higher latency. © 2017 IEEE.
Citation - Scopus: 1
A computer-controlled triaxial swelling test apparatus
(2004) Bilir,M.E.; Müftüoǧlu,Y.V.; Sari,D.
To avoid the problems encountered during and after the construction of engineering structures built within swelling rocks or soils, data related to swelling stresses and strains should be used in the design stage. For an effective design, it is important that the data used for this purpose should be derived from triaxial swelling tests. In this article, a re-designed and computer-controlled triaxial swelling test apparatus is introduced. Due to the limited amount of test equipment, the work associated with triaxial swelling tests has been rather limited and consequently a test standard has not been developed yet. The computer-controlled triaxial swelling test apparatus has made tedious swelling tests easier and thus it has provided better possibilities for the investigation of the triaxial swelling behavior of soils and rocks.
Citation - Scopus: 19
Creep and shrinkage behavior of high-strength concrete and minimum reinforcement ratio for bridge columns
(Precast/Prestressed Concrete Institute, 2010) Mertol,H.C.; Rizkalla,S.; Zia,P.; Mirmiran,A.; Civil Engineering
This paper summarizes the findings of an extensive research program that examined the shrinkage and creep behavior of high-strength concrete (HSC) up to a strength of 18 ksi (124 MPa). Creep and shrinkage strains of 60 specimens were monitored for up to two years. The variables considered in this investigation were the concrete compressive strength, specimen size, curing type, age of concrete at loading, and loading stress level. Research findings indicate that the current American Association of State Highway and Transportation Officials' AASHTO LRFD Bridge Design Specifications could be used to estimate the creep coefficient and shrinkage strain of HSC up to 15 ksi (103 MPa). However, the current AASHTO LRFD specifications do not provide appropriate predictions for concrete compressive strength greater than 15 ksi (103 MPa). A revised time-development correction factor is proposed to obtain better predictions for HSC up to 18 ksi (124 MPa). For HSC compression members, the current AASHTO LRFD specifications require an excessive amount of minimum longitudinal reinforcement to account for the long-term effects due to shrinkage and creep. Based on an analysis, a new relationship is proposed for the required minimum reinforcement ratio.
Death-In Women in Dubliners
(Ovidius University, 2025) Serdaroğlu, Duygu; Department of English Language and Literature
This article analyses three stories “Eveline”, “Clay” and “The Dead” in James Joyce’s Dubliners by focusing on female characters and them being dead souls because of the pressures they have. In the stories, religion and marriage are two important reasons of the oppression that the Irish society creates on women who are victimized and devalued regardless of the fact that they are married or not. The study also claims that the protagonists of these stories, Eveline, Maria and Gretta also meet on the same ground in mirroring each other and showing the same end for all women in Dubliners. In that sense, the reason why these three women are chosen is the possible connection of these women, i.e., Eveline is the younger version of all these women and if she remains unmarried, her older version would be Maria and if she gets married, she would be like Gretta, underscoring the same end for all women. Thus, this article aims to scrutinise the female characters as dead souls in the stories “Eveline”, “Clay” and “The Dead” and how they are silenced to hide their disappointment, frustration and unfulfilled desires by the society which depreciates them. © 2025 Elsevier B.V., All rights reserved.
Citation - Scopus: 1
Determination of Metabolic Rate From Physical Measurements of Heart Rate, Mean Skin Temperature and Carbon Dioxide Variation
(Sakarya University, 2022) Özbey, M.F.; Çeter, A.E.; Turhan, C.; Energy Systems Engineering; Mechanical Engineering; Software Engineering
Thermal comfort depends on four environmental parameters such as air temperature, mean radiant temperature, air velocity and relative humidity and two personal parameters, including clothing insulation and metabolic rate. Environmental parameters can be measured via objective sensors. However, personal parameters can be merely estimated in most of the studies. Metabolic rate is one of the problematic personal parameters that affect the accuracy of thermal comfort models. International thermal comfort standards still use a conventional metabolic rate table which is tabulated according to different activity tasks. On the other hand, ISO 8996 underestimates metabolic rates, especially when the time of activity level is short and rest time is long. To this aim, this paper aims to determine metabolic rates from physical measurements of heart rate, mean skin temperature and carbon dioxide variation by means of nineteen sample activities. 21 male and 17 female subjects with different body mass indices, sex and age are used in the study. The occupants are subjected to different activity tasks while heart rate, skin temperature and carbon dioxide variation are measured via objective sensors. The results show that the metabolic rate can be estimated with a multivariable non-linear regression equation with high accuracy of 0.97. © 2022, Sakarya University. All rights reserved.
Citation - Scopus: 1
Development of a low cost radio controller for Tele operation systems: Crane controller design as an industry sponsored undergraduate research
(2013) Kaynaköz,G.; Daǧdeviren,B.; Kapusuz,K.Y.; Kara,A.; Department of Electrical & Electronics Engineering
This study presents some of the design and development stages of a radio control system for dense interference environments. All design and development stages were conducted by undergraduate students, with an undergraduate research project sponsored by a local company. The study starts with an overview of the system including choice of main components and modules. Then, it discusses the design stages of the system from analog to digital conversion to driving circuit of the targeted mechanical system (crane), and provides some preliminary results and conclusions. One of the design criteria in the project was minimization of the cost and size, and the preliminary results have shown that the prototype could compete with many commercial equivalents.
Development of a single degree of freedom inertial measurement system
(2013) Kara,S.E.; Golmohammedzadeh,H.; Arikan,K.B.; Department of Mechatronics Engineering
A test bench is designed to develop an inertial measurement unit. Micro electromechanical system (MEMS) type gyro and accelerometer sensors are placed on a rotating platform. Actual angular position is measured by an encoder. This paper presents design of various estimators to estimate the orientation of the test platform. Basically complementary and Kalman filter based estimators are designed and implemented on the test bench. Parameters of the estimators are optimized by using experimental data. Satisfactory results are achieved.
Disturbance Rejection Control of a Quadrotor Equipped With a 2 DOF Manipulator
(Springer Berlin Heidelberg, 2015) Aydemir, Mete; Arikan, Kutluk Bilge; Irfanoğlu, Bülent; Department of Mechatronics Engineering
In this study Active Disturbance Rejection Control (ADRC) is implemented for the attitude dynamics of the quadrotor flying platform. Quadrotor model with a 2 DOF manipulator is constructed. External disturbances, manipulator dynamics and internal plant dynamics are treated as total disturbance which are estimated and rejected in simulation environment. © 2025 Elsevier B.V., All rights reserved.
Drawing a Portrait of Refugee Representation in Turkish Newspapers: A Framing Analysis of Hürriyet and Sabah
(Bloomsbury Publishing Plc., 2020) Özoran, Beris Artan; Seyidov, Ilgar; Public Relations and Advertising
E-HRM Challenges and Opportunities
(IGI Global, 2008) Mishra, Alok; Software Engineering
HR executives are looking to technology and the information it provides to help them drive decisions that will lead to success of the organization as a whole (Wilcox, 1997). Snell, Stueber, and Lepak (2002) observe that HR can meet the challenge of simultaneously becoming more strategic, flexible, cost-efficient, and customer-oriented by leveraging information technology (IT). They point out that IT has the potential to lower administrative costs, increase productivity, speed response times, improve decision-making, and enhance customer service all at the same time. The need for cost reduction, higher quality services, and cultural change are the three main forces that drive firms to seek IT-driven HR solutions (Yeung & Brockbank, 1995). The rapid development of the Internet during the last decade has boosted the implementation and application of electronic human resource management (e-HRM) (Strohmeier, 2007). According to Strohmeier (2007) e-HRM is the (planning, implementation and) application of information technology for both networking and supporting at least two individual or collective actors in their shared performing of HR activities. Virtual HR is emerging due to the growing sophistication of IT and increased external structural options (Lepak & Snell, 1998). Surveys of HR consultants suggest that both the number of organizations adopting e-HRM and the depth of applications within the organizations are continually increasing (CedarCrestone, 2005). IT is beginning to enable organizations to deliver state-of the- art HR services. Many experts forecast that the PC will become the central tool for all HR professionals (Kovach & Cathcart, 1999). © 2025 Elsevier B.V., All rights reserved.
Effect of COVID-19 Infection on the Performance of Elite Adolescent Overhead Athletes
(SAGE Publications Ltd, 2025) Uluǧ, Naime; Kodak, Seyde Büşra; Kodak, Muhammed Ihsan,; Karahan, Zehra Can; Kiliç, Erden
Background: COVID-19 might have a negative impact on sports performance. There are few studies in the literature that assess how the sports performance of adolescent athletes is affected by COVID-19. Objective: This study aimed to compare the sports performance of adolescent overhead athletes who had COVID-19 infection with those who had not. Methods: The study involved adolescent elite overhead athletes from basketball, volleyball, handball, and tennis. Athletes’ performance were assessed using core muscle endurance, hand grip strength, upper extremity functional performance, reaction time and agility performance, and the 3-min step test. Results: Study included 47 adolescent overhead athletes (mean age 15.15 ± 1.51 years). The COVID-19 group showed significantly higher Borg Scale scores and decrease in oxygen saturation levels only after the step test (p = 0.02, p = 0.02, respectively). Additionally, COVID-19 group had lower grip strength in both right and left hands compared to the non-COVID group (p = 0.01, p = 0.05, respectively). No significant association was found between core muscle power and endurance, upper extremity functional performance, reaction time and agility performance (p > 0.05). Conclusions: Our results showed reduced hand grip strength and increased fatigue following COVID-19 infection in adolescent overhead athletes. Time period after COVID-19 infection had a negative correlation with sports performance and core endurance. © 2025 Elsevier B.V., All rights reserved.
The Effect of Endurance-Based Sports on Athlete Success and Psychological Well-Being
(Campus EDUCA SPORTIS S.L., 2025) Özpinar, S.; Yüce, A.S.; Korkmaz, M.; Öztaş, D.; Kuyucu, M.M.; Aras, G.
The aim of this study is to examine the effects of psychological resilience on sport success and mental health. The relationships between commitment, control and challenge, which are sub-dimensions of psychological resilience, and sport success and psychological well-being were evaluated and discussed in detail. Today, the problems arising due to the increasing competitive environment and stress factors have made it more important for athletes to be psychologically strong. Although the relationship between psychological resilience and sport success has been previously examined in the literature, studies evaluating the individual effects of the sub-dimensions of resilience in a large sample group are quite limited. This study aims to overcome this deficiency and make an up-to-date contribution to the subject. A total of 684 students (72 percent male, 28 percent female) studying at the Faculties of Sport Sciences of 16 universities in Istanbul, Ankara, Izmir, Bursa and Antalya participated in the study. Participants completed the Resilience Scale and Mental Health Inventory, and their sporting achievements were evaluated by their coaches using the Sport Achievement Scale. Data were collected via Google Forms® and analysed using SPSS 22.0 software with correlation, regression and Granger causality tests. The findings revealed that all resilience sub-dimensions showed positive and significant relationships with sport achievement (R²=0.93) and psychological well-being (R²=0.68). Especially control and challenge factors had the strongest effects. As a result of the research, commitment, control and challenge, which are the sub-dimensions of psychological resilience, significantly affect both success levels and psychological well-being of athletes. Therefore, resilience development programmes for athletes should focus on these areas. © 2025, Campus EDUCA SPORTIS S.L.. All rights reserved.
ELECTROCHEMICAL HYDROGEN SEPARATION FROM REFORMATE USING POLYBENZIMIDAZOLE/MOF COMPOSITE MEMBRANES
(International Association for Hydrogen Energy, IAHE, 2022) Durmuş,G.N.B.; Eren,E.O.; Devrim,Y.; Ozgur Colpan,C.; Özkan,N.; Mechanical Engineering; Energy Systems Engineering
This study introduces the experimental results of a high-temperature electrochemical hydrogen purification (ECHP) cell through poly 2.2-m-phenylene-5.5-bibenzimidazole/metal organic framework (PBI/MOF) composite membranes in the temperature range of 140°C-180°C. Synthesis of ZIF-8 and UiO-66 MOFs was conducted through a typical solvothermal method, and composite membranes containing 2.5 wt. %. MOF was fabricated. Experiments were conducted with pure hydrogen (H2) and reformate gas mixtures containing H2, carbon monoxide (CO), and carbon dioxide (CO2). A gas chromatography device (GC) was used to analyze the gas composition at the exit of the ECHP cell. The final output H2 purity was found to be >99.9 % for the H2/CO2/CO mixed-phase and >99.7% for the H2/CO mixed phase. © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.
Citation - Scopus: 3
Enterprise Resource Planning Systems: Effects and Strategic Perspectives in Organizations
(IGI Global, 2010) Mishra, Alok; Software Engineering; Software Engineering
In the age of globalization, organizations all over the world are giving more significance to strategy and planning to get an edge in the competition. This chapter discusses the Enterprise Resurce Planning (ERP) systems effects and strategic perspectives in organizations. These are significant how information technology and ERP together facilitate in aligning the business in such a way so that it should lead to excellent productivity. It further explores in what ways effects of ERP system in organizations can provide sustained competitive advantage. © 2025 Elsevier B.V., All rights reserved.

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