Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/1248

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Now showing 1 - 20 of 3369
  • Book Part
    Watching and Playing a Video Game in Terms of Advertising Effectiveness
    (IGI Global, 2026) Çarboğa, Onur Serdan; Uraltaş, Kıvanç Nazlım Tüzel
  • Article
    Transformer-Driven Beam Control via Reconfigurable Antenna Arrays for Terahertz UAV Communications
    (IEEE-Inst Electrical Electronics Engineers Inc, 2026) Erdem, Mikail; Saeed, Akhtar; Tokgoz, Korkut Kaan; Gurbuz, Ozgur; Bafarassat, Milad; Usta, Mahir Burak; Qaraqe, Khalid
    Terahertz (THz) uncrewed aerial vehicle (UAV)-to-UAV communication offers multi-gigabit-per-second throughput through large available bandwidths, but requires highly directional beams to overcome severe path loss and atmospheric attenuation at these frequencies. On the other hand, the rapid and irregular mobility of UAVs results in frequent beam misalignment, which reduces link capacity. To address these challenges, this paper introduces COntext-Reasoned Transformer for Efficient Beam IndeXing (CORTEX) as a two-stage antenna-aware deep learning framework, which enables beam control for THz UAV communications via reconfigurable antenna arrays. CORTEX learns beam selection directly from 255 full-wave electromagnetic radiation patterns, generated by an 8 & times;8 row-selective microstrip patch antenna array, operating at 272.5 GHz, thereby explicitly incorporating antenna radiation characteristics into the learning process. In Stage I, future angular coordinates are predicted from UAV mobility sequences using a spherical geometry-aware Wrapped Cauchy loss. In Stage II, these predictions are mapped onto discrete antenna configurations through codebook cross-attention, preserving realistic sidelobe structures that enhance robustness under transient misalignment. Comprehensive evaluations considering five representative UAV mobility profiles, including real flight traces and other realistic trajectories, demonstrate that the proposed method achieves near optimal performance with a mean angular prediction error of 0.87 degrees and average capacity performance of 93.78% of the exhaustive search capacity. Moreover, CORTEX is more than three times faster than the exhaustive search in inference time, incurring only 0.36 ms latency, promising highly effective beam control for sustaining reliable THz UAV links under challenging aerial mobility conditions
  • Article
    Towards a Political Anthropology of Populism: Historicality, Relationality, Modality
    (Routledge Journals, Taylor & Francis Ltd, 2026) Kurt, Firat
    In the aftermath of Turkey's 2023 general elections, the defeat of a broad opposition coalition - including disaffected Islamists, disillusioned Kurdish voters and staunch secular nationalists - raised a perplexing question: why do economically marginalised groups continue to support the ruling Justice and Development Party (AKP) despite one of the worst economic crises in the country's history? Drawing on over a decade of ethnographic engagement with AKP partisans, sympathisers and municipal workers in Istanbul's working-class neighbourhoods, this article develops a political anthropology of populist persistence by untangling three interrelated dimensions. Historicality captures the embodied, existential memory through which supporters experience their present politics within a longer arc of struggle going back to the exclusions and failures of the 1990s. Relationality foregrounds how partisans see their social, cultural and economic gains as inherently embedded in a zero-sum struggle with secular constituencies. Modality traces the pragmatic, counterfactual and anticipatory forms of reasoning through which partisans and sympathisers assess what the AKP could accomplish under the given adverse conditions, what catastrophes opposition alternatives would have caused and what future achievements remain possible. Together, these dimensions reveal populist endurance not as ideological manipulation or passive compliance, but as an active, collectively sustained form of political world-making.
  • Book Part
    The Revolution Will Be Hacktivated: Turkish Marxist Hacker Groups
    (Bloomsbury Publishing Plc., 2015) Akser, Murat
  • Article
    The Use of the 5-HT3-Receptor Antagonist Ondansetron for the Treatment of Postcardiotomy Delirium
    (W.B. Saunders, 2000) Sönmez, Bingür; Akpinar, Belhhan; Güden, Mustafa; Demiroǧlu, Cem'i; Bayindir, Osman; Can, Erol
  • Article
    The Cold War in Turkey’s Industrialization: The Cases of the Ereğli and İskenderun Iron and Steel Plants
    (Cambridge Univ Press, 2026) Somel, Gozde; Basaran Lotz, Neslisah L.; Ornek, Cangul
    This article examines Turkey's position as an aid recipient during the Cold War, benefiting from assistance provided by both the United States and the Soviet Union. Adopting a comparative approach, this study investigates the impact of these investments on the development of two major iron and steel plants: the Ereğli Iron and Steel Plant (ERDEMİR), constructed with American financial and industrial support, and theİskenderun Iron and Steel Plant (İSDEMİR), established with Soviet assistance. Both projects sparked political controversy in Turkey during the 1960s and 1970s, shaped not only by the ideological rivalries of the Cold War but also by material realities on the ground. In terms of the conditions attached to aid, transfer of technology, and ownership structures, there were significant differences between the support offered by the capitalist and socialist countries. These differences were evident in the cases of ERDEMİR andİSDEMİR, where two distinct models were used for practical testing. This article argues that comparing the construction and operation of these plants provides valuable insights into the nature of Cold War aid and contributes to the broader global literature on the subject.
  • Article
    Structure-Guided Engineering of Geobacillus Kaustophilus L-Asparaginase with Improved Functional and Stability Characteristics for Acrylamide Mitigation
    (Elsevier, 2026) Servili, Burak; Yildirim, Deniz; Tülek, Ahmet; Özdemir, F. İnci; Tülek, Gizem Sertkaya; Şükür, Gözde
    Acrylamide formation during high-temperature food processing poses significant food safety concerns. L-asparaginase (L-ASNase) is widely used as a processing aid to hydrolyze L-asparagine prior to thermal treatment, thereby limiting acrylamide generation. In this study, we applied a structure-guided protein engineering strategy to a thermophilic type II L-asparaginase from Geobacillus kaustophilus (GkASNase) to enhance catalytic efficiency and operational stability. Binding-pocket energy screening prioritized five single-residue variants (M59N, M59I, L61H, K164R, and D220E), which were subsequently evaluated by molecular dynamics simulations and experimental validation. All variants retained thermophilic characteristics, with an optimum pH of 8.5 and a temperature optimum of 55 degrees C. Specific activity increased from similar to 2250 U/mg for the wild-type enzyme to 3950 and 3810 U/mg for M59N and D220E, respectively. The half-life improved from 3.56 h (wild type) to 40.86 h for D220E and 39.12 h for L61H. Catalytic efficiency increased 1.72-fold and 1.57-fold for D220E and M59N, respectively. In a starch-based model system, L61H and D220E achieved 93.5% and 94.1% acrylamide mitigation, compared with 66.7% for the wild-type enzyme after 1 h at 55 degrees C. Molecular dynamics analyses provided structural insight into mutation-dependent pocket stabilization, altered local flexibility, and their association with enhanced functional performance. These findings demonstrate that rational pocket-proximal substitutions effectively tune the stability-activity balance of thermophilic L-ASNase and provide a framework for engineering processing-robust biocatalysts for food safety applications.
  • Book Part
    Social Media Marketing Web X.0 of Opportunities
    (IGI Global, 2009) Baruh, Lemi
  • Conference Object
    Smart Inverter Droop Setting to Solve Voltage Issues in Distribution Networks
    (Institute of Electrical and Electronics Engineers Inc., 2025) Ceylan, Oguzhan; Lazzari, Riccardo; Savasci, Alper; Cakir, Muhammed Turhan; Rodio, Carmine; Sagripanti, Alessia
  • Article
    Selective Liquid-Liquid Extraction of Mercuric Ions by Octyl Methane Sulfonamide
    (Taylor & Francis Inc, 2003) Tan, N; Sungur, S; Biçak, N; Gazi, M
    N-octyl methane sulfonamide (OMSA) has been demonstrated to be a very efficient reagent for selective extraction of Hg(II) ions, from aqueous solutions. The extraction bases on rapid reaction of OMSA with Hg(II) ions yielding mono and disulfonamido mercury compounds in ordinary conditions. Solubility of OMSA and its mercury compounds in 2-ethyl hexanol provide a clear-cut phase separation in the extraction. The solution of OMSA in 2-ethyl hexanol (0.4 mol L-1) is able to extract 82.2% of mercuric-acetate (0.4 mol L-1) in non-buffered conditions. Although the process depends on the nature of accompanying anions, the distribution coefficient is reasonably high (k(d) greater than or equal to 1.27) even in the presence of chloride ions. The extraction is strictly selective and the presence of Cd(II), Zn(II), Pb(II) do not bring any interference. The extraction system works in moderate concentrations. Extracted mercury in the organic phase can be recovered by back-extraction with concentrated HCl or H2SO4 solutions. After acid treatment, the organic solution of OMSA becomes regenerated without losing its activity due to reasonable hydrolytic stability of the sulfonamide linkage and it can be recycled for further extractions.
  • Article
    Self-Reported Social Media Use Does Not Affect Cross-Cultural Consensus in First Impressions
    (Cambridge Univ Press, 2026) Pavlovic, Ondrej; Leongomez, Juan David; Turecek, Petr; Sterbova, Zuzana; Castellanos-Chacon, Andres; Wacewicz, Slawomir; Fiala, Vojtech
    Research focusing on first impression formation based on facial stimuli lacks a conclusion on whether there is a cross-cultural agreement and how deeply it has proliferated across distant populations. Social media may play an important role in the level of cross-cultural agreement as they provide us with overwhelming numbers of visual stimuli, including faces. Sharing social media aesthetics, their users may utilise facial cues congruently. We asked participants from seven distant, ethnically variable countries from five continents to rate facial attractiveness, trustworthiness and dominance of a single ethnically invariant facial sample (N = 195, 106 women, M_Age = 23.23), also accounting for their self-reported social media use intensity and socioeconomic background. We expected the agreement between cultures to be better for participants who reported a higher intensity of social media use. Instead, we observed substantial cross-cultural agreement, especially for attractiveness and trustworthiness, regardless of the self-reported social media use intensity. However, the samples of participants from similar cultural backgrounds (same countries) agreed more. We also see substantial agreement in facial cue utilisation. In line with previous research, the distinctiveness of facial shape affects perceived attractiveness congruently across cultures. Despite the relatively small age range, age positively affects ascribed dominance.
  • Book Part
    Security Challenges of Turkish-American Relations in the Post-Bush Era
    (Bloomsbury Publishing Plc., 2012) İşeri, Emre
  • Book Part
    Privatising Dark Past: From Exile and Adjucation to Desolate Tourism
    (Central European University Press, 2026) Erkan, Yonca
  • Article
    Policy-Driven Geothermal Expansion in Türkiye: Technological and Regulatory Insights from the Kızıldere Field
    (Elsevier Sci Ltd, 2026) Kirkil, Gokhan; Ediger, Volkan Ş.; Yucekaya, Ahmet
    Geothermal energy is a promising renewable energy source that provides sustainable, reliable electricity and heat. This study explores the development of geothermal energy in Türkiye, with a particular focus on the Kızıldere geothermal field located in the Büyük Menderes Basin. Despite Türkiye's significant geothermal potential, its utilization remains limited compared to other renewable energy sources. The paper examines the historical development of geothermal energy in Türkiye, highlighting the rapid growth in installed capacity driven by favorable government policies such as feed-in tariffs and tax incentives. The Kızıldere geothermal field-Türkiye's first and most developed geothermal site-serves as a case study to analyze technological advancements, regulatory frameworks, and challenges in geothermal energy production. The field's evolution from a modest 0.5 MW pilot plant in 1975 to a combined installed capacity of over 245 MW across three power plants demonstrates the effectiveness of supportive policies and advanced technologies, such as the triple-flash and binary combined-cycle systems. An econometric analysis further quantifies the impact of these policies, indicating that the introduction of a feed-in tariff in 2007 significantly accelerated geothermal capacity growth. However, challenges such as high upfront costs, scaling issues, and market volatility persist. The study concludes with recommendations to improve regulatory frameworks, enhance financial incentives, and invest in research and development to unlock Türkiye's full geothermal potential and advance its renewable energy goals.
  • Conference Object
    Photogrammetric and Semantic Reconstruction of Architect Sinan’s Ayakapi Hammam: Reversing Inappropriate Interventions through HBIM
    (International Society for Photogrammetry and Remote Sensing, 2026) Okay, Mert; Turksezer, Zehra Irem
  • Article
    Mnemonic Mechanisms of Emotion Regulation: The Role of Retrieval Perspective in Managing Anger and Shame
    (Routledge Journals, Taylor & Francis Ltd, 2026) Caglar, Emine Seyma; Nur Kurtoglu, Zehra; Saricicek, Firat Caglar; Oner, Sezin; Donerkayali, Ceren
    Autobiographical remembering plays a crucial role in regulating emotions, yet how the retrieval perspective modulates this function across discrete negative emotions remains unclear. Building on research showing that field and observer perspectives influence memory phenomenology, the present study examined how visual perspective and retrieval goals regulate anger and shame. In two experiments, participants recalled anger- or shame-related autobiographical events from either a field or observer perspective. In Study 1, they engaged in spontaneous subsequent recall, whereas in Study 2, they were instructed to recall a positive memory. Across both studies, participants tended to recall more positive memories after negative ones, supporting mood-incongruent recall and the automatic activation of mnemonic emotion regulation. Instructed recall further enhanced this positivity bias, increasing the vividness and emotional intensity of retrieved memories. The observer perspective was more effective at dampening the emotional impact of anger, whereas the field perspective amplified reliving across both emotions. Overall, findings suggest that memory-based emotion regulation operates through both automatic (Study 1) and goal-directed (Study 2) mechanisms, shaped by the emotional content of memories and the phenomenological characteristics of recall.
  • Book Part
    Mixed Element Network Structure Determination via Artificial Neural Networks
    (World Scientific Publishing Co., 2025) Özmen, Atilla; Şengül, Metin