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Citation - Scopus: 3
Application of Team-Based Learning at a Health Science Course: A Case Study
(Athens Institute for Education and Research, 2019) Bengu, Elif; 0000-0001-9817-7207; AGÜ, Eğitim Bilimleri Fakültesi, Temel Eğitim Bölümü; Bengü, Elif; 01. Abdullah Gül University; 10. Rektörlük
The purpose of this study is to identify students’ reactions to the implementation of team-based learning as an instructional strategy in a pharmacology course in the context of a Turkish university. Team-based learning is defined as an active form of learning that not only encourages individual effort but also team involvement to learn in an academic setting. Team-based learning is one of the learning techniques/methods that is increasingly being used in medical education. Literature shows that in teambased learning students apply the concepts at the time they are learned in the classroom, before the exams, as opposed to traditional lecturing, in which the concepts that are learned are later tested in the exams. Furthermore, research supports that faculty are more engaged with their students in team-based learning, since it affords instructors the ability to readily identify what their students are achieving, as opposed to traditional lecturing or other group approaches. There are limited studies in Turkey that examine the applications of team-based learning in a higher education setting. Therefore, this study describes the use of the team-based learning technique in an undergraduate health science course in Turkey. The initial results indicate that this instructional strategy was beneficial for students’ learning. © 2023 Elsevier B.V., All rights reserved.
Citation - Scopus: 2
A Comparative Analysis of International and Domestic Acquisitions: What Drives Acquirer Competitiveness
(Inderscience Publishers, 2018) Genç, Omer Faruk; Zakaria, Rimi; AGÜ, Yönetim Bilimleri Fakültesi, İşletme Bölümü; Genc, Omer Faruk; 01. Abdullah Gül University
Despite several decades of research in the context of mergers and acquisitions (M&As), an understanding of acquirer competitiveness in international vis-à-vis domestic acquisitions remains inconclusive. This empirical study presents a comparative framework to identify a set of intangible factors that differentiate the long-term competitiveness of acquirers engaging in both of these types of acquisitions. Building on the information asymmetry logic, we find that access to accurate information, acquirers’ research and development (R&D) intensity, and similarity between the acquirer and the target play a vital role in determining the overall competitiveness of acquirers. Using a sample of all the M&As that occurred between 1985 and 2007 and applying a matching control methodology, sound comparisons are made to draw conclusions. From a theoretical standpoint, the findings help generalise the importance of intangible factors from the contextual, acquirer-centric, and dyadic angles. From a practical viewpoint, the conclusions enable managers to evaluate their firms’ preparedness for international vis-à-vis domestic acquisitions. © 2021 Elsevier B.V., All rights reserved.
Citation - Scopus: 25
A Cubic B-Spline Galerkin Approach for the Numerical Simulation of the GEW Equation
(International Academic Press, 2016) Karakoç, Seydi Battal Gazi; Zeybek, Halil; AGÜ; Zeybek, Halil; 01. Abdullah Gül University
The generalized equal width (GEW) wave equation is solved numerically by using lumped Galerkin approach with cubic B-spline functions. The proposed numerical scheme is tested by applying two test problems including single solitary wave and interaction of two solitary waves. In order to determine the performance of the algorithm, the error norms L2 and L∞ and the invariants I1, I2 and I3 are calculated. For the linear stability analysis of the numerical algorithm, von Neumann approach is used. As a result, the obtained findings show that the presented numerical scheme is preferable to some recent numerical methods. © 2016 Elsevier B.V., All rights reserved.
Citation - Scopus: 1
Data-Driven Discovery and DFT Modeling of Fe4H on the Atomistic Level
(Elsevier B.V., 2024) Zagorac, Dejan; Zagorac, Jelena; Djukic, Milos B.; Bal, Burak; Schön, Johann Christian; 0000-0002-7389-9155; AGÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümü; Bal, Burak; 01. Abdullah Gül University; 02.06. Makine Mühendisliği; 02. Mühendislik Fakültesi
Since their discovery, iron and hydrogen have been two of the most interesting elements in scientific research, with a variety of known and postulated compounds and applications. Of special interest in materials engineering is the stability of such materials, where hydrogen embrittlement has gained particular importance in recent years. Here, we present the results for the Fe-H system. In the past, most of the work on iron hydrides has been focused on hydrogen-rich compounds since they have a variety of interesting properties at extreme conditions (e.g. superconductivity). However, we present the first atomistic study of an iron-rich Fe4H compound which has been predicted using a combination of data mining and quantum mechanical calculations. Novel structures have been discovered in the Fe4H chemical system for possible experimental synthesis at the atomistic level. © 2024 Elsevier B.V., All rights reserved.
Evaluation of Hybrid Classification Approaches: Case Studies on Credit Datasets
(Springer Verlag service@springer.de, 2018) Cetiner, Erkan; Güngör, Vehbi Çağrı; Kocak, Taskin; 0000-0003-0803-8372; AGÜ, Mühendislik Fakültesi, Bilgisayar Mühendisliği Bölümü; Gungor, Vehbi Cagri; 01. Abdullah Gül University
Hybrid classification approaches on credit domain are widely used to obtain valuable information about customer behaviours. Single classification algorithms such as neural networks, support vector machines and regression analysis have been used since years on related area. In this paper, we propose hybrid classification approaches, which try to combine several classifiers and ensemble learners to boost accuracy on classification results. We worked with two credit datasets, German dataset which is a public dataset and a Turkish Corporate Bank dataset. The goal of using such diverse datasets is to search for generalization ability of proposed model. Results show that feature selection plays a vital role on classification accuracy, hybrid approaches which shaped with ensemble learners outperform single classification techniques and hybrid approaches which consists SVM has better accuracy performance than other hybrid approaches. © 2018 Elsevier B.V., All rights reserved.
Citation - Scopus: 1
A Gendered Analysis of Palestinian Refugee Women's Experiences of Migration From Syria to Türkiye
(Sage Publications Ltd, 2024) Kurtoglu, Ayca; Llyod, Armagan Teke; Salimoglu, Zafer; 0000-0002-4827-3556; 0000-0001-5439-439X; /0000-0003-4623-7786; AGÜ, İnsan ve Toplum Bilimleri Fakültesi, Siyaset Bilimi ve Uluslararası İlişkiler Bölümü; Llyod, Armagan Teke; 01. Abdullah Gül University; 06. İnsan ve Toplum Bilimleri Fakültesi; 06.01. Siyaset Bilimi ve Uluslararası İlişkiler
After the outbreak of the conflict in 2011, millions of people fled Syria across its borders. This gave way to a new category of people, "Syrian refugees." While this categorical understanding constitutes the basis for legal entitlements, it homogenizes all fleeing Syria and results in concealing the differential experiences and vulnerabilities of particular groups. The paper challenges this blanket categorization by focusing on the migration experiences of Palestinian women from Syria to Turkiye around the concepts of biological and social reproduction which represent the largely neglected aspects concerning the process of forced migration. By drawing on six women's experiences, the paper concludes that the homogeneity of the Syrian migrants is an illusion; women's migrations are shaped through their gendered and ethnic history; and women face gender-specific challenges and opportunities in both home and host countries. We particularly argue that policies on border control and migrant's integration fail to consider the subjective conditions and needs of particular groups within the Syrian migrants.
Citation - Scopus: 1
"Literally I Grew Up" Secondary-Tertiary Transition in Mathematics for Engineering Students Beyond the Purely Cognitive Aspects
(De Gruyter Open Ltd, 2023) Vinerean, Mirela C.; Liljekvist, Yvonne Elisabeth; Bengu, Elif; 0000-0001-9817-7207; AGÜ, Eğitim Bilimleri Fakültesi, Temel Eğitim Bölümü; Bengü, Elif; 01. Abdullah Gül University; 10. Rektörlük
High dropout rates in the first year of undergraduate studies are an expression of the secondary-tertiary transition problem and they seem to be particularly high in those degree programs where specialized mathematics courses are taught in the first year of study. Research shows that students' difficulties during the transition period cannot be reduced to purely cognitive factors. In this article, we address the secondary-tertiary transition problem in mathematics for engineering students. Based on a questionnaire with focus beyond the purely cognitive aspects, a comparison of the transition problem at three European mid-sized universities is carried out, to identify common challenges and difficulties, as well as differences. The questionnaire concentrates on the four dimensions (personal, organizational, content related, and social) and corresponding critical requirements for a successful transition described in Trautwein, C., & Bosse, E. (2017). The first year in higher education - critical requirements from the student perspective. Higher Education, 73, 371-387. A group of 308 first-year engineering students partook in the study. In the presentation, we highlight students' perceptions regarding the transition, changes, and challenges they experienced under the above-mentioned four dimensions and discuss similarities and differences between countries. © 2023 Elsevier B.V., All rights reserved.
Citation - Scopus: 31
Numerical Solutions of the Kawahara Equation by the Septic B-Spline Collocation Method
(International Academic Press, 2014) Karakoç, Seydi Battal Gazi; Zeybek, Halil; Ak, Turgut; AGÜ; Zeybek, Halil; 01. Abdullah Gül University
In this article, a numerical solution of the Kawahara equation is presented by septic B-spline collocation method. Applying the Von-Neumann stability analysis, the present method is shown to be unconditionally stable. The accuracy of the proposed method is checked by two test problems. L2 and L∞ error norms and conserved quantities are given at selected times. The obtained results are found in good agreement with the some recent results. © 2016 Elsevier B.V., All rights reserved.
Citation - WoS: 6
Citation - Scopus: 7
Parenting and Education: Navigating Class, Religiosity and Secularity in Istanbul
(Routledge Journals, Taylor & Francis Ltd, 2023) Kolluoglu, Biray; Dincer, Evren M.; 0000-0002-7813-0919; AGÜ; Dinçer, Evren Mehmet; 01. Abdullah Gül University; 06. İnsan ve Toplum Bilimleri Fakültesi; 06.03. Sosyoloji
This article studies the educational choices that secular and religious professional and managerial middle-class parents in Istanbul make for their children. It explores the ways in which class intersects with religion in Turkey where, politics, culture, social, and even economic life are marked by a deep divide among the religious and the secular. Focusing on a particular segment of the middle classes, that with higher economic and social capital, the article brings to fore the ways in which religiosity and secularity structure the processes of transforming privileges into acquired rights in the form of educational qualifications and extracurricular skills. It explores the current sociological conjuncture that bereaves both groups, albeit in different ways, of their ability to fully mobilize their accumulated economic, social, and cultural capitals in reproducing their class position in their children. The article argues that exploring the parenting of education along the secular and the religious divide can unravel the foundational elements of the ongoing competition and conflict in Turkey and enables a deeper understanding of the current divide and the potential for a future reconciliation. The study relies on a qualitative study that entails interviews with thirty families and two focus groups.
Positive Solutions of Multipoint Φ-Laplacian BVPS With First-Order Derivative Dependence
(World Scientific, 2023) Bachouche, Kamal; Tair, Hocine; Doǧan, Abdülkadir Muhittin; 0000-0002-3195-4718 View this author’s ORCID profile; AGÜ, Mühendislik Fakültesi, Bilgisayar Mühendisliği Bölümü; Doğan, Abdülkadir; 01. Abdullah Gül University; 02.01. Mühendislik Bilimleri; 02. Mühendislik Fakültesi
This paper concerns existence of positive solutions for a second-order boundary value problem of Sturm-Liouville type associated with a φ-Laplacian operator and posed on a bounded interval. Existence results are obtained by an adapted version of the Krasnosel'skii's fixed point theorem of cone expansion and compression. Some examples illustrate our results. © 2023 Elsevier B.V., All rights reserved.
Citation - WoS: 23
Citation - Scopus: 23
Pressure-Induced Amorphization of MOF-5: A First Principles Study
(Wiley-VCH Verlag GmbH, 2018) Erkartal, Mustafa; Durandurdu, Murat; Erkartal, Mustafa; Durandurdu, Murat; 0000-0001-5636-3183; AGÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü; 01. Abdullah Gül University; 02.07. Malzeme Bilimi ve Nanoteknoloji Mühendisliği; 02. Mühendislik Fakültesi
Amorphous metal-organic frameworks (MOFs) and the amorphization of crystalline MOFs under mechanical stimuli are attracting considerable interest in last few years. However, we still have limited knowledge on their atomic arrangement and the physical origin of crystalline-to-amorphous phase transitions under mechanical stimuli. In this study, ab initio simulations within a generalized gradient approximation are carried out to investigate the high-pressure behavior of MOF-5. Similar to the previous experimental findings, a pressure-induced amorphization is observed at 2 GPa through the simulations. The phase transformation is an irreversible first order transition and accompanied by around 68% volume collapse. Remarkably, the transition arises from local distortions and, contrary to previous suggestions, does not involve any bond breaking and formation. Additionally, a drastic band gap closure is perceived for the amorphous state. This study has gone some way towards enhancing our understanding of pressure-induced amorphization in MOFs.
Citation - Scopus: 3
Subprime Mortgages and Lending Bubbles
(Bank Indonesia Institute, 2018) Polat, Ali Yavuz; 0000-0001-5647-5310; AGÜ, Yönetim Bilimleri Fakültesi, Ekonomi Bölümü; Polat, Ali Yavuz; 01. Abdullah Gül University
We consider a model with two types of households: the poor with no initial endowment and the rich with positive endowment, and two types of assets: properties in a poor area and properties in a rich area. In the model, poor agents need credit to buy an asset, whereas the rich can draw from their endowment. We show that credit-fueled housing bubbles sometimes may improve welfare, making the poorer individuals better off. More precisely, there exist two types of equilibria in both property markets: one is a bubble equilibrium, and the other is an equilibrium where asset prices are stable over time. While the poor always obtain a positive surplus in the bubble equilibrium, this is not necessarily true for the rich. Our results suggest that there may be scope for market interventions aimed at sustaining the value of assets held by credit-constrained agents after the burst of a credit bubble. © 2025 Elsevier B.V., All rights reserved.
Citation - WoS: 6
Citation - Scopus: 7
Synergistic Effect of Organic Acid on the Dissolution of Mixed Nickel-Cobalt Hydroxide Precipitate in Sulphuric Acid Solution
(Edp Sciences S A, 2019) Kursunoglu, Sait; Kursunoglu, Sait; 0000-0002-1680-5482; AGÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü; 01. Abdullah Gül University
The synergistic effect of an organic acid on the dissolution of nickel and cobalt from a mixed nickel-cobalt hydroxide precipitate (MHP) in sulphuric acid solution was studied. The effects of sulphuric acid concentration, the type of organic acid, leaching time, leaching temperature and stirring speed on the dissolution of the metals were experimentally investigated. It was observed that there is no beneficial effect of leaching temperature and stirring speed on the dissolution of the metals from the used MHP product which contains 37.7% Ni, 2.1% Co and 5.6% Mn. It was found that citric acid was more effective than oxalic acid for the dissolution of nickel and manganese, whereas oxalic acid was more effective than citric acid for the dissolution of cobalt. The addition of oxalic acid into the leaching system, however, affected the dissolution of nickel negatively because nickel precipitate as nickel oxalate. Therefore, the use of citric acid as synergist for sulphuric acid leaching of MHP product is more promising. After 60 min of leaching, 90.9% Ni, 84.2% Co and 98.1% Mn were dissolved under the following conditions: 0.75 M sulphuric acid, 2 g citric acid, 1/10 solid-to-liquid ratio, 400 rpm stirring speed and 30 degrees C temperature. The experimental results demonstrate that the addition of citric acid as a synergist for sulphuric acid leaching of a MHP product provides beneficial effect for the dissolution of nickel, cobalt and manganese.

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