WoS İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/4465
Browse
Recent Submissions
Article Citation - WoS: 12Citation - Scopus: 23Nato and Turkey in the Post-Cold War World: Between Abandonment and Entrapment(Routledge Journals Taylor & Francis Ltd, 2012) Güvenç, Serhat; Özel, SoliFor the last two decades two fears have largely shaped Turkey's view of NATO. These are fears of entrapment and abandonment. Both are symptoms of a type of security dilemma that is peculiar to military alliances and coalitions. Both fears had their origins in the Cold War in the context of Turkey's 60-year-old NATO membership. They also led to the pursuit of autonomy in Turkish foreign policy both as a response strategy and as a strategic choice in its own right. While the former version featured a heavy dose of reliance on military means or hard power the latter version de-emphasized the military option in foreign policy and relied instead on soft power. A multitude of dynamics accounts for variations in the Turkish approach to NATO for the last two decades: Geography and regional considerations the transatlantic dynamics NATO's restructuring and transformation and Turkey's domestic dynamics. It may be suggested that NATO membership now looms large in the strategic calculations of the new Turkish elite in the aftermath of the Arab Awakening. This development might be the harbinger of the end of an era marked by fears and the pursuit of autonomy in Turkey's approach to NATO.Book Part Key issues emerging from the overlap of heritage and mega-events(Routledge, 2020) Jones, Zachary M.[Abstract Not Available]Book Review Feminist International: How To Change Everything(Routledge Journals, Taylor & Francis Ltd, 2022) Yildirim, Yagmur[Abstract Not Available]Editorial Citation - WoS: 5Citation - Scopus: 6Solidarity Tourism: a Pathway To Revitalising the Health of Vulnerable War-Affected Populations?(Int Soc Global Health, 2023) Wen, Jun; Hu, Fangli; Zheng, Danni; Phau, Ian; Kozak, Metin; Hou, Haifeng; Wang, Wei[Abstract Not Available]Article Citation - WoS: 2Citation - Scopus: 3Achieving Sustainability in Solar Energy Firms in Turkey Through Adopting Lean Principles(Mdpi, 2022) Aldewachi, Bilal; Ayag, ZekiLean principles and sustainability are considered important terms in business. Solar firms are witnessing great competition to fulfill energy requirements, suffering from a huge amount of waste, negatively affecting the sustainability dimensions. Thus, the aim of the study is to build a framework for solar energy firms to achieve sustainability through adopting lean principles, which will help to fix many problems as waste and costs. The method included reviewing the literature to explore the founding of the relation between the two terms, and using a questionnaire that was directed to the responsible people in Turkish solar energy firms. The results of the survey were analyzed to: (1) Find out what the responsible people think about the two terms lean and sustainability; (2) Measure the probable relationship between lean principles and sustainability dimensions by applying a linear regression test; (3) Use the results of point number two to build the framework. The result showed there was a high level of relative importance about the two terms from the point of view of managers and experts in solar firms. In addition, the study found a relationship between adopting pull and flow principles of lean, and achieving economic and social dimensions of sustainability, this finding is represented in a framework.Article Citation - WoS: 23Citation - Scopus: 28A Behavioral Analysis of Investor Diversification(Routledge Journals Taylor & Francis Ltd, 2014) Fuertes, Ana-Maria; Muradoğlu, Gülnur; Öztürkkal, BelmaThis paper studies the link between individual investors' portfolio diversification levels and various personal traits that proxy informational advantages and overconfidence. The analysis is based on objective data from the largest Turkish brokerage house tracking 59951 individual investors' accounts with a total of 3248654 million transactions over the period 2008-2010. Wealthier highly educated older investors working in the finance sector and those trading relatively often show higher diversification levels possibly because they are better equipped to obtain and process information. Finance professionals married investors and those placing high-volume orders through investment centers show poorer diversification possibly as a reflection of overconfidence. Our analysis reveals important nonlinear effects implying that the marginal impact of overconfidence on diversification is not uniform across investors but varies according to the investor's information gathering and processing abilities.Conference Object Citation - Scopus: 1Semi-Centralized Control of Distributed Generation in Smart Grids(IEEE, 2018) Ceylan, Oğuzhan; Pisica, Ioana; Paudyal, SumitThis paper proposes a semi-centralized intelligent control approach for voltage regulation in distribution grids based on sensitivity calculations. The model checks the voltage magnitudes of each end of each lateral in the system one by one then if any of these violates the allowed voltage magnitudes each node in a single lateral sends its reactive power capability and sensitivity information to the sensor located at the beginning node of that lateral. This information is sorted at the sensor and required voltage is computed and assigned to the bids one by one. This paper tests this approach on a modified 33 Node Distribution Test system with several renewable energy sources: photovoltaics (PVs) and wind turbines (WTs) and presents the numerical results based on a 15 minute resolution load data PV outputs and WT outputs.Article Citation - WoS: 2Citation - Scopus: 2Fluorescence and Photon Transmission Techniques for Studying Film Formation From Ps/Go Nanocomposites(SPRINGER, 2020) M. Selin, Sunay; Şaziye, Uğur; Pekcan, ÖnderSteady-state fluorescence and UV-Vis techniques were used to study the film formation behavior of composites consisting of pyrene (P)-labeled polystyrene (PS) latex and graphene oxide (GO) in terms of PS latex/GO volume fraction. PS/GO composite films were prepared on glass substrates with different volume fractions of PS and GO using the drop casting method at room temperature. The film formation behavior of these composites was studied by annealing them at a temperature range of 100-300 degrees C and monitoring the scattered light intensity (I-sc), fluorescence intensity (I-P) from P and transmitted light intensity (I-tr) through the films after each annealing step. The optical results indicate that PS/GO composites showed complete film formation independent of GO volume fraction. The morphological changes in the films were also found to be in consistent with these results.Conference Object Citation - WoS: 1An Analysis for the Use of Compressed Sensing Method in Microwave Imaging(IEEE, 2017) Yiğit, Enes; Tekbaş, Mustafa; Ünal, İlhami; Erdoğan, Sercan; Çalışkan, CaferOne of the most important problems encountered in microwave imaging methods is intensive data processing traffic that occurs when high resolution and real time tracking is desired. Radar signals can be recovered without loss of data with a randomly selected subset of the measurement data by compression sensing (CS) method which has been popular in recent years. For this reason, in this study, the use and capabilities of the CS method were investigated for tracking moving human, and the target information was correctly determined for the data obtained much below the Nyquist sampling criterion. In this study, it was revealed that the CS method can be developed for target detection and trackingArticle Examining the Role of Dark and Light Triad Traits on Sociosexuality(Routledge Journals, Taylor & Francis Ltd, 2025) Urganci, Betul; Sevi, Baris; Dogruyol, Burak; Sakman, EzgiSociosexual orientation-the tendency toward casual sex, is associated with dispositional components of personality such as higher scores of Dark Triad traits (narcissism, Machiavellianism, and psychopathy). Yet, it remains unknown which specific Dark Triad traits and Light Triad traits (Kantianism, Humanism, and Faith in Humanity) predict sociosexuality and its dimensions while controlling for the others. In the current study, using an online community sample (N = 308), we examined the links between Dark Triad traits, Light Triad traits, overall sociosexuality, and sociosexuality dimensions (attitude, behavior, desire). Using hierarchical regression, we found that only psychopathy emerged as the predictor of behavior, desire, attitude dimensions, and sociosexuality total score. This effect held when controlling for age, sex, relationship status, the other two Dark personality traits, and the Light Triad. Results suggest that individuals high on psychopathy have a greater tendency toward uncommitted relationships.Article Citation - WoS: 4Citation - Scopus: 3The making of Turkish exceptionalism: the west, the rest and unreconciled issues from the past(Routledge Journals, Taylor & Francis Ltd, 2023) Yanik, Lerna K. K.This article has two main goals. The first is to examine the role of politics of space and time in making Turkey's international relations. The second is to answer a more general question: what happens to a non-Western state like Turkey that cannot eliminate 'differences' that mark that state as non-Western? My answer is that these states handle these 'differences' that do not entirely disappear by creating exceptionalism. Exceptionalism rebrands 'difference' as 'distinctiveness' that can only be possessed by a specific country or nation. The article identifies two main pathways to the creation of Turkish exceptionalism, space and time, and explores the brief history of these spatio-temporal imaginations leading to the making of the exceptionalist narrative and their implications for Turkey's foreign relations and identity.Article Citation - WoS: 4Citation - Scopus: 5Solution approaches for the bi-objective Skiving Stock Problem(Pergamon-Elsevier Science Ltd, 2023) Karaca, Tolga Kudret; Samanlıoğlu, Funda; Altay, AycaThe Skiving Stock Problem (SSP) aims to determine an optimal plan for producing as many large objects as possible by combining small items. The skiving process may need different considerations depending on the production environment and the product characteristics. In this study, we address bi-objective 1D-SSP with two conflicting objectives. One common objective is to minimize the trim loss remaining after skiving, as removing the excess width is an extra procedure. When welding is an element of the skiving process, increasing the number of items for each product indicates compromised quality. Therefore, minimizing the number of small items for each product becomes a primary objective in such cases. To solve this bi-objective version of the NP-hard problem, we implement a Lexicographic Method (LM) in which the importance of the objectives imposes their preference orders. We propose two methodologies within the LM framework. The first methodology integrates Column Generation (CG) and Branch & Bound (B&B) to search for an exact solution. Given the excessive computational time an exact solver may require for tight or large-sized problems, we propose a heuristic method integrating the Dragonfly Algorithm (DA) and a Constructive Heuristic (CH). Real-world application results validate the exact solver and demonstrate comparable results for the heuristic solver in terms of solution quality and computational time. The efficiency of the solution methodologies for a preemptive multi-objective SSP aims to support decision-makers with make-or-buy decisions.Article Citation - WoS: 4Citation - Scopus: 4The Guided Evaluation Method: an Easier Way To Empirically Estimate Trained User Performance for Unfamiliar Keyboard Layouts(Academic Press Ltd- Elsevier Science Ltd, 2024) Mutasim, Aunnoy K.; Batmaz, Anil Ufuk; Mughrabi, Moaaz Hudhud; Stuerzlinger, WolfgangTo determine in a user study whether proposed keyboard layouts, such as OPTI, can surpass QWERTY in performance, extended training through longitudinal studies is crucial. However, addressing the challenge of creating trained users presents a logistical bottleneck. A common alternative involves having participants type the same word or phrase repeatedly. We conducted two separate studies to investigate this alternative. The findings reveal that both approaches, repeatedly typing words or phrases, have limitations in accurately estimating trained user performance. Thus, we propose the Guided Evaluation Method (GEM), a novel approach to quickly estimate trained user performance with novices. Our results reveal that in a matter of minutes, participants exhibited performance similar to an existing longitudinal study - OPTI outperforms QWERTY. As it eliminates the need for resource-intensive longitudinal studies, our new GEM thus enables much faster estimation of trained user performance. This outcome will potentially reignite research on better text entry methods.Article Citation - WoS: 2Citation - Scopus: 2Terror as Potentiality - the Affective Rhythms of the Political(Routledge Journals, 2018) Diken, Bülent; Laustsen, Carsten BaggeThe paper addresses the ways in which the cultural, the affective and the political intersect, counter and/or feed upon one another in the context of contemporary terror. Initially, building upon Machiavelli and Hobbes, we deal with the political significance of terror (and the fear it provokes), emphasizing its potentiality, which inscribes future within the present. Then we turn to an analysis of terror in the prism of securitization. Terror, in this respect, amounts to de-materialization (the enemy as spectre), de-temporalization (the erasure of the temporal difference between the present and the future), and de-territorialisation the breakdown of the distinctions between inside' and outside'. Following this, we observe how these three processes are dealt with at the subjective and objective (social) levels. Regarding the first, subjective, level we differentiate three attitudes as paranoid, panic and rational. Regarding the latter, we consider terror in terms of accident, risk and catastrophe. Then, discussing the rhythmic relations between these conceptualizations and their spatio-temporal consequences, we focus on the notion of catastrophe. We end with articulating the aporias emerging in this contextConference Object Citation - WoS: 1Helping Universities To Be More Competitive: the Program Design Scorecard (pds) Shown in the Example of a Management Information Systems (mis) Phd Program(SINGAPORE MANAGEMENT & SPORTS SCIENCE INST PTE LTD, 2013) Oberer, BirgitMany universities that resist change are missing out on the growing opportunitiesArticle Citation - WoS: 36Citation - Scopus: 49Does off-pump CAPG reduce gastrointestinal complications?(Elsevier Science Inc, 2004) Sanisoğlu, İlhan; Güden, Mustafa; Bayramoğlu, Zehra; Sağbaş, Ertan; Dibekoğlu, Cengiz; Sanisoğlu, S. Yavuz; Akpınar, BelhhanBackground. The aim of this study was to compare gastrointestinal complications and associated risk factors among patients undergoing cardiac surgery using off- and on-pump revascularization techniques. Methods. A total of 1146 adult patients who underwent coronary artery surgery during a 6-year period were evaluated retrospectively. Group 1 consisted of 546 patients operated using off-pump techniques and group 2 consisted of 600 cases operated with cardiopulmonary bypass. Patients were compared and evaluated for gastrointestinal complications and possible associated risk factors using univariate and multivariate logistic regression analysis. Results. Overall mortality was 1.6% in group 1 and 2.2% in group 2 (p = 0.523). Mortality due to gastrointestinal complications was 38.5% and 35.7% respectively in group 1 and group 2. The mean EuroSCORE value was 5.1 +/- 2.8 in group 1 and 3.8 +/- 2.4 in group 2 (p < 0.001). The most common gastrointestinal complication in the off-pump group was gastrointestinal bleeding. The leading complication in group 2 was intestinal ischemia. Conclusions. The incidence rates of gastrointestinal complications were similar in the on- and off-pump coronary artery bypass groups the type of gastrointestinal complications however was different. Mortality rate due to these complications was also similar and remained high regardless of the type of surgery. Cardiopulmonary bypass did not emerge as a risk factor for gastrointestinal complications but prolonged cardiopulmonary bypass (longer than 98 minutes) resulted in a high incidence of such complications. Old age and advanced arteriosclerosis emerged as risk factors in both groups resulting in gastrointestinal complications suggesting the ischemic nature of the injury. (C) 2004 by The Society of Thoracic Surgeons.Article Citation - WoS: 4Citation - Scopus: 15Competing Frameworks of Islamic Law and Secular Civil Law in Turkey: a Case Study on Women's Property and Inheritance Practices(Pergamon-Elsevier Science Ltd, 2015) Toktaş, Şule; O'Neil, Mary LouThe article stems from empirical research conducted with a group of women living in Istanbul who have conservative life styles bounded by an Islamic worldview. It attempts to illuminate the negotiation and contestation between the official civil law and Islamic law. The findings demonstrate that women inherit and bequeath property in a social setting where their gender roles are defined by their adherence to Islam. We argue that in Turkey women's inheritance practices are not determined solely in accordance with the secular civil law but rather are the result of a complex and intertwined combination of legal sources where an Islamic worldview often leads to the adoption of Islamic law. In other words the application of the secular civil law in Turkey is limited by the common practice of Islamic law. Rather than follow the gender equality mandated by the civil law the inheritance practices of many Islamic women are constituted with a deference to some aspects of Islamic law creating a situation of legal pluralism in Turkey. (C) 2014 Elsevier Ltd. All rights reserved.Article Citation - WoS: 3Citation - Scopus: 2Acceptable 'expats Versus Unwanted 'arabs Tracing Hierarchies Through Everyday Urban Practices of Skilled Migrant Women in Istanbul(Wiley, 2024) Tuncer, EzgiThis article focuses on ethnic hierarchies found within highly educated migrant women working in Istanbul traced through their everyday urban practices. It introduces the stratified and comparative results of migration and resettlement of those from the Global North and the Global South through a comprehensive analysis on their urban lives, including their social positionings, preferences of neighbourhoods and daily patterns of their use of the city. Contrary to the common conception that skilled migrants are privileged, our research reveals inequalities and discriminatory practices they face that intersect with gender, nationality and ethnicity. Our research, based on qualitative analyses of in-depth interviews along with online subjective mapping representing use of the city, also reveals that regardless of their origin and identity, almost all our participants experience verbal/physical sexual harassment or discrimination in public space in Istanbul, which forces women to produce spatial tactics of everyday life.Article Citation - WoS: 7Citation - Scopus: 9Detection of Interdependent Primary Systems Using Wideband Cognitive Radios(Elsevier GMBH Urban & Fischer Verlag, 2013) Yılmaz, Burak; Erküçük, SerhatCognitive radios (CRs) may be sharing multiple frequency bands with primary systems if the CR is a wideband or an ultra wideband (UWB) system. In that case the CR should ensure all the coexisting primary systems in these bands are detected before it can start data transmission. In this work we study the primary system detection performance of a wideband CR assuming that there are multiple coexisting primary systems and that these primary systems may be jointly active. Accordingly we consider the implementation of energy detection scheme in multiple bands followed by two detection methods: (i) a maximum-a-posteriori (MAP) based detection (i.e. joint detection) that takes into account the statistics of simultaneously operating systems in independent bands and (ii) a Neyman-Pearson (NP) test based detection that optimizes the threshold values independently in each band (i.e. independent detection). For a simpler implementation of the independent detection we show that the threshold values obtained from joint detection can be used in order to achieve the optimum NP test based independent detection results. In addition to quantifying the gain of joint detection over independent detection in terms of probabilities of false alarm and detection for practical scenarios we also present the operation capability of CRs in terms of the fractions of time the CR can access the channel without interfering with the primary systems. The results are important for the practical implementation of multiband detection when the primary systems are known to be interdependent. (C) 2013 Elsevier GmbH. All rights reserved.Article Citation - WoS: 16Citation - Scopus: 18An Intelligent Approach for the Evaluation of Innovation Projects(IOS Press, 2020) Samanlıoğlu, Funda; Ayağ, ZekiIn this study, an intelligent approach is presented for the evaluation and selection of innovation projects. Selecting the best innovation project is a complicated multiple criteria decision making (MCDM) problem with several potentially competing quantitative and qualitative criteria. In this paper, two hesitant fuzzy MCDM methods; hesitant fuzzy Analytic Hierarchy Process (hesitant F-AHP) and hesitant fuzzy VIsekriterijumska optimizacija i KOmpromisno Resenje (hesitant F-VIKOR) are integrated to evaluate and rank innovation projects. In the hesitant fuzzy AHP-VIKOR, hesitant F-AHP is used to find fuzzy evaluation criteria weights and hesitant F-VIKOR is implemented to rank innovation project alternatives. A numerical example is given where five innovation projects are evaluated based on nine criteria by three decision makers.
