05. Fakülteler
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Conference Object Citation - Scopus: 2Turcoins: Turkish Republic Coin Dataset(IEEE, 2021) Gökberk, Berk; Akarun, Lale; Temiz, HüseyinIn this paper, we present a novel and comprehensive dataset which contains Turkish Republic coins minted since 1924 and present a deep learning based system that can automatically classify coins. The proposed dataset consists of 11080 coin images from 138 different classes. To classify coins, we utilize a pre-trained neural network (ResNet50) which is pre-trained on ImageNet. We train the pre-trained neural networks on our dataset by transfer learning. The imbalanced nature of the dataset causes the classifier to show lower performance in classes with fewer samples. To alleviate the imbalance problem, we propose a StyleGAN2-based augmentation method providing realisticfake coins for rare classes. The dataset will be published in http://turcoins.Article Citation - WoS: 22Citation - Scopus: 25Perceptions of Dating Violence: Assessment and Antecedents(SAGE Publications, 2020) Toplu-Demirtaş, Ezgi; Fincham, Frank D.; Öztemür, GizemChallenging perceptions of violence is crucial to prevent dating violence (DV), because such perceptions intervene in the organization and interpretation of violent events. However, these perceptions have received limited attention. This likely reflects the lack of a psychometric tool to do so. The current study had two purposes: to develop a measure of perceptions of psychological, sexual, and physical DV, and to explore how vertical collectivism, through hostile sexism and violence myth acceptance, shapes perceptions of DV. A total of 491 college students (55.3% women; M = 20.76 years, SD = 1.77 years) completed measures of the vertical collectivism, hostile sexism, domestic violence myth acceptance, and perceptions of DV. The results of exploratory factor analyses revealed a 15-item single-factor measure of perceptions of DV as initial construct validity, which had satisfactory internal consistency. A gender difference emerged in perceptions of DV; college women perceived psychological, sexual, and physical DV as more serious compared with college men. Moreover, the association between vertical collectivism and perceptions of DV was serially mediated via hostile sexism and violence myth acceptance. The findings are discussed in terms of previous research and the need to address the role of vertical collectivism in sexism, myth acceptance, and perceptions of violence in prevention/intervention efforts to reduce vulnerability to DV perpetration and victimization. Several recommendations are outlined to facilitate future research.Conference Object Book Part How the Cephei E-Course Syllabus Design Was Developed and Implemented(Springer International Publishing, 2022) Kurban, Fell CarolineWhile the digitalization of education has been around since the 1990s, it is only since the Covid-19 pandemic that it has really taken hold in education, when universities were forced to rapidly move online and traditional patterns of teaching were no longer viable. This pushed universities to provide a blended learning environment drawing on technologies that our students, as digital natives, had already been using on a daily basis for some time. However, blended learning is only effective if underpinned by tried and tested learning frameworks—something that many universities were not prepared for when the shift to online learning took place. The Cooperative e-learning Platform for Industrial Innovation (CEPHEI) however, was already prepared and ready for this shift, as from 2017 it had been working on the development of an e-learning platform with the aim of digitizing education while also integrating the reality of professional innovation activities into the context of education according to the demands of industry. To achieve this aim, one of the first phases of the project was to identify key learning frameworks for e-course syllabus design, based on existing research, that could be used to provide recommendations for instructors in the development of their CEPHEI courses. This chapter presents the culmination of this process and provides a framework that can be used by instructors or institutions wishing to design e-learning courses. To make these frameworks tangible for the reader, examples are given throughout the chapter from an undergraduate environmental engineering course in a civil engineering department. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.Article Citation - WoS: 2Citation - Scopus: 5Increasing Procurement Efficiency Through Optimal E-Commerce Enablement Scheduling(Emerald Group Publishing Ltd., 2019) Özlük, Özgür; Cholette, Susan; Clark, Andrew GPurpose: This study aims to show how cost savings can be achieved through optimizing the scheduling of e-commerce enablements. The University of California is one of the largest, most prestigious public education and research systems in the world, yet diminished state support is driving the search for system-wide cost savings. Design/methodology/approach: This study documents the preparation for and rollout of an e-procurement system across a subset of campuses. A math programing tool was developed for prioritizing the gradual rollout to generate the greatest expected savings subject to resource constraints. Findings: The authors conclude by summarizing the results of the rollout, discussing lessons learned and their benefit to decision-makers at other public institutions. Originality/value: The pilot program comprising three campuses has been predicted to yield $1.2m in savings over a one-year period; additional sensitivity analysis with respect to savings, project timelines and other rollout decisions illustrate the robustness of these findings.Conference Object Kitle İmha Silahlarının Yayılması Sorunu(Genelkurmay Başkanlığı Harp Akademileri Komutanlığı, 2014) Kibaroğlu, MustafaKitle I·mha Silahlarının (KI·S) yayılması sorunu analiz edilmiştir.Book Part Citation - Scopus: 1The Evolution of Water Diplomacy Frameworks: The Euphrates-Tigris Basin as a Case Study(Springer, 2024) Kibaroğlu, AyşegülWater diplomacy encompasses the processes and institutions through which the national interests and identities of sovereign states are represented to one another. It is enshrined in international law, which states use to explain and justify their policies to concerned actors in the international system. States mostly prefer traditional tools of water diplomacy such as negotiation and mediation to resolve disputes in transboundary river basins. This chapter explores water diplomacy along with its main principles and actors. On the one hand, the state has been the main actor in shaping transboundary water policies and conducting water diplomacy throughout the last few decades of water disputes. On the other hand, international organizations, international financial agencies, non-governmental organizations, and science-policy (Track II) initiatives also participate in water diplomacy. A brief discussion of emerging water diplomacy approaches is followed by a case study on the evolution of water diplomacy frameworks in the Euphrates-Tigris river basin.Article Citation - WoS: 3Citation - Scopus: 4A Novel Graph Transformation Strategy for Optimizing Sptrsv on Cpus(Wiley, 2023) Yılmaz, BuseSparse triangular solve (SpTRSV) is an extensively studied computational kernel. An important obstacle in parallel SpTRSV implementations is that in some parts of a sparse matrix the computation is serial. By transforming the dependency graph, it is possible to increase the parallelism of the parts that lack it. In this work, we present a novel graph transformation strategy to increase the parallelism degree of a sparse matrix and compare it to our previous strategy. It is seen that our transformation strategy can provide a speedup as high as 1.42x$$ 1.42x $$.Review Citation - WoS: 16Citation - Scopus: 20Selecting Suicide Ideation Assessment Instruments: a Meta-Analytic Review(SAGE Publications, 2017) Duncan, Kelly; Atalay, Zümra; Erford, Bradley T.; Jackson, Jessica; Bardhoshi, GertaPsychometric meta-analyses and reviews were provided for four commonly used suicidal ideation instruments: the Beck Scale for Suicide Ideation, the Suicide Ideation Questionnaire, the Suicide Probability Scale, and Columbia–Suicide Severity Rating Scale. Practical and technical issues and best use recommendations for screening and outcome research are offered.Article Directions for Getting Lost: or How To Change Your Mind(2018) West, Mark W.Architect Mark W West creates work that is incredibly delicately drawn. Here he documents the construction of his drawings, while his friend, whose name is also Mark West, contributes a commentary about the creative process behind them. The two texts reveal how the works defy the damage caused by reductive traditional architectural education and general experience, and open the viewer to a sense of greater wholeness, however disturbing this may be.Conference Object Optimizing Collective Building Management Through a Machine Learning-Based Decision Support System(IEEE, 2023) Güvençli, Mert; Dağ, Hasan; Doğan, Erkan; Çakar, Tuna; Özyürüyen, Burcu; Kiran, HalilThis study presents the design, implementation, and evaluation of a Decision Support System (DSS) developed for Collective Building Management. Given the potential advantages of machine learning techniques in this domain, the research explores how these techniques can be used to improve collective building management. The dataset consists of 824,932 records and 15 attributes, after preprocessing the data to fill in missing values with the median. The random forest algorithm was chosen for model training and achieved a performance rate of 71.2%. This model can be used to optimize decision processes in collective building management. The proposed prototype is notable for its ability to automatically generate operational plans. In conclusion, machine learning-based DSSs are effective tools for collective building management.Conference Object Euphrates-Tigris Basin: Future (2040-2060)(Bellagio Rockefeller Center, 2017) Kibaroğlu, AyşegülThis paper analyses competitive development and projects,?irrigable lands and irrigated areas, water supply and demand and impacts on climate change over Euphrates-Tigris.Conference Object Citation - Scopus: 1Design and Fpga Implementation of Uav Simulator for Fast Prototyping(IEEE, 2023) Aydın, Yusuf; Ayhan, Tuba; Akyavaş , İrfanAs production and advances in motor and battery cell technology progress, unmanned aerial vehicles (UAVs) are gaining more and more acceptance and popularity. Unfortunately, the design and prototyping of UAVs is an expensive and long process. This paper proposes a fast, component based simulation environment for UAVs so that they can be roughly tested without a damage risk. Moreover, the combined effect of individual component choices can be observed with the simulator to reduce design time. The simulator is flexible in the sense that detailed aerodynamic effects and selected components models can be included. In this work, the simulator is proposed, model parameters are extracted for a particular UAV for testing the simulator and it is implemented on an field programmable gate array (FPGA) to increase simulation speed. The simulator calculates battery state of charge (SOC), position, velocity and acceleration of the UAV with gravity, drag, propeller air inflow velocity. The simulator runs on the FPGA fabric of AMD-XCKU13P with simulation steps of 1 ms.Conference Object Citation - WoS: 2Citation - Scopus: 2Classification of Altruistic Punishment Decisions by Optical Neuroimaging and Machine Learning Methods(IEEE, 2023) Erözden, Ozan; Şahin, Türkay; Akyürek, Güçlü; Filiz, Gözde; Çakar, TunaAltruistic punishment (third-party punishment) is important in terms of maintaining social norms and promoting prosocial behavior. This study examined data obtained using the near infrared spectroscopy (fNIRS) method to predict altruistic punishment decisions. It was found that specific neural activity patterns were significantly related to decisions regarding the punishment of the perpetrator. This research contributes to the development of social decision-making models and helps advance our understanding of the cognitive and neural processes involved in third-party punishments.Conference Object When Does the System Punish?(2017) Çağlar, BarışTurkish foreign policy behavior regarding the Syrian Crisis, except a few important theoretical inroads, has not been studied from different vantage points of IR theory. Despite international systemic imperatives that prompt otherwise, the Turkish executive branch has persisted on its foreign policy course of action. This is yet another round where neorealism on its own is of little help in explaining foreign policy behavior. So as to contribute accordingly, the article herein presents a neoclassical realist account of Turkey's Syria policy from its inception to our day.Article The Provocation of Jasper Johns: Pushing the Representational Limits of Pictorial Expression(2020) Keki, BaşakBu çalışma Jasper Johns’un kabaca 1955-1965 yılları arasındaki çalışmalarındaki görsellik ve sözel dil arasındaki ilişkiyi inceler. Sanatçının Numbers in Colors / Renkli Numaralar (1958-59), Gray Alphabets / Gri Alfabeler (1956), False Start / Hatalı Çıkış (1959), Jubilee / Jübile (1959), By the Sea / Deniz Kenarı (1961), Fool’s House / Ahmağın Evi (1962), Map / Harita (1961), The Critic Sees / Eleştirmen Görüyor (1961), Voice / Ses (1964-67), Voice 2 / Ses 2 (1982), Light Bulb / Ampul (1958) ve Watchman / Gözcü (1964) gibi işleri görsel ve sözel dillerin birbirleriyle ne kadar yakın ilişki içerinde olduğunu açığa çıkararak bize resimsel ifadenin sınırlarına ilişkin meseleleri araştırma alanı sağlar. Ancak bu alanlar arasındaki ilişki içerisinde yoğun olarak kesinti, karmaşa ve gerilim de barındırır. Herhangi bir görsel sanat eserini doğru bir şekilde değerlendirebilmek için eninde sonunda bakma alışkanlıklarımızı askıya alıp bakma eyleminin kendisine has karmaşıklığını fark etmek durumunda kalırız. Johns’un eserleri de bakma deneyiminin çeşitliliğine (görmek, seyretmek, selamlamak, okumak, saymak, incelemek, ezberlemek, casusluk yapmak, röntgenlemek, gözünü dikmek vs.) dikkat çekerek bize görme alışkanlıklarımızı sorgulatır. Bu çalışma, Johns’un eserlerini bu denli kışkırtıcı kılan özelliğin görsel alemin kendi içinde saf bir alan olmaktan ziyade sürekli olarak sözel dil ve diğer duyuların etkisine maruziyetinin vurgulanması olduğunu iddia eder.Article Fuzzy Decision Mechanism for Stock Market Trading(2021) Çapkan, Yavuz; Şenol, Erdi; Ulu, CenkInvestors utilize various methods to make buy/sell decisions depending on time-dependent stock market prices. In this study, a fuzzy decision mechanism that makes buy/sell decisions for stock market data is proposed. The proposed mechanism generates instant buy/sell decisions by evaluating three popular indicators which are the Moving Average Convergence/Divergence (MACD) Strategy, Chaikin Money Flow (CMF), and Stochastic Oscillator (SO). The fuzzy decision mechanism has three inputs and one output which are defined by using Gaussian membership functions. In the design of the decision mechanism, Mamdani inference method is used and the rule table is defined by nine rules. Therefore, the structure of the proposed fuzzy decision mechanism is simple and straightforward. The performance of the proposed fuzzy decision mechanism is compared with two classical decision mechanisms using MACD and CMF indicators separately. In the comparisons, the stock market data of Borsa Istanbul 100 Index (XU100), Dow Jones Industrial Average (^DJI), and S&P 500 (^GSPC) are used. The comparison results show that the proposed fuzzy decision mechanism provides significantly higher profit than the mechanisms using either MACD or CMF indicators for all stock market data.Book Part Missing the Good Old Days: Investigating Outgroup Attitudes Through Collective Nostalgia and Global Identification(Taylor and Francis, 2022) Şengül, Denizhan; Doğan, Zeynep; Akkurt, Bengisu; Koç, Yasin; Aksu, Ayça; Anderson, JoelCollective nostalgia is a group-based emotion that refers to the longing for the “good old days” of one's ingroup. Research shows that collective nostalgia usually benefits relationships with other in-group members, while hampering intergroup relations. However, this depends on the past remembered. Moreover, global identification predicts positive intergroup relations, yet this depends on whether the target group is perceived to be aligned with a global culture. Accordingly, we tested how collective nostalgia and global identification can then be linked to inclusionary vs. exclusionary outgroup attitudes in Turkey in relation to Kurds, Armenians, LGBTQ+ individuals and Syrian refugees. The results showed (N = 1090) that collective nostalgia was related to positive attitudes towards Kurds, Armenians and gay men, whereas it was negatively related to attitudes towards Syrian refugees. Moreover, contrary to expectations, we found that global identification predicted positive attitudes towards all outgroups. These findings are not surprising given the changing political climate and increasing intergroup conflict in Turkey. We speculate that the meaning attributed to the “good old days” of Turkey predicted these positive attitudes except for Syrian refugees who are perceived to be today's problem. Overall, the relationship between nostalgia and outgroup attitudes are more complex than research has so far shown, and the content of the past remembered might be important to understand this relationship.Conference Object Impact of Introducing Semi-Rigid Moment Frames on Seismic Response of Braced Frames(2019 ISEC Press, 2019) Shen, Jay; Akbaş, Bülent; Şeker, Onur; Faytarouni, MahmoudMaximum seismic inelastic drift demand in a steel building with braced frames as primary seismic-force-resisting (SFR) system tends to concentrate in few stories without considering inherent participation of designed gravity-force-resisting (GFR) system in actual structural stiffness and strength. The influence of GFR system on stiffness and strength can be taken into account by considering the composite action in beam-to-column shear connections that exist in modern steel building construction to form actual semi-rigid moment-resisting frames. Therefore, modeling semi-rigid moment frames as an equivalent to the GFR system in braced frame buildings could be utilized as a representative to the strength provided by gravity frames. This paper presents a seismic evaluation of a six-story chevron braced frame, with and without semi-rigid moment frame. Four different cases are investigated under a set of ground motions and results are discussed in terms of story drift distribution along the height. The results pointed out that the current findings lay a foundation to conduct further investigation on the seismic performance of braced frames as designed SFR system together with GFR system.
