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PARALYMPIC ATHLETES’ DUAL CAREER PATHWAYS: A GROUNDED THEORY STUDY
Girişmen, Gizem; İnce, Mustafa Levent; Department of Physical Education and Sports (2025-1-10)
This study explores Paralympic athletes’ DC pathways and experiences through employing a constructivist version of grounded theory. To this end, in-depth semi-structured interviews were conducted with ten active Paralympic athletes either studying at university, working full-time alongside their sports careers, or combining academic and vocational pursuits. The results of this study reveal that Paralympic athletes’ career development experiences involve individual pathways with linear and interrupted non-li...
Analysis and design of highly transparent and efficient antenna
Eralp, Mehmet Emre; Aydın Çivi, Hatice Özlem; Baktur, Reyhan; Department of Electrical and Electronics Engineering (2025-1-8)
This thesis investigates the analysis, design, and fabrication of optically transparent antennas, addressing the trade-offs between transparency and radiation efficiency. Transparent monopole and patch antennas are explored, focusing on their potential applications in beyond 5G and vehicle-to-everything (V2X) communication systems. The transparent planar monopole antenna features a single-sided geometry on flexible PET substrates coated with silver nanowires (AgNW). The fundamental factors limiting the effi...
UNRAVELING ROMAN MOBILITY: ARCHAEOGENOMIC INSIGHTS FROM ANATOLIA TO THE ITALIAN PENINSULA
Eker, Elifnaz; Somel, Mehmet; Atınışık, Ezgi; Department of Biology (2025-1-06)
The Roman Empire, one of the largest state entities of the ancient world, spanned three continents —Europe, North Africa, and Western Asia— surrounding the Mediterranean Sea for nearly 1,000 years. The Empire, as it expanded, also connected populations of distant regions through diverse processes including trade networks, voluntary and forced migration, and military service. These significantly influenced the demographic structures of local populations. The establishment and decline of the Roman Empire have...
Bucketing Ranking-Based Losses For Efficient Training of Object Detectors
Yavuz, Feyza; Kalkan, Sinan; Akbaş, Emre; Department of Computer Engineering (2025-1-10)
Object detection is a fundamental computer vision task that focuses on classifying and locating objects in an image. Classification and localization of objects are commonly supervised with score-based loss functions, e.g., Cross-entropy Loss for classification and L1 Loss for localization. On the other hand, ranking-based loss functions, such as Average Precision Loss and Rank&Sort Loss, better align with the evaluation criteria, have fewer hyperparameters, and offer robustness against the imbalance between...
Inventory process dynamics of a market making model with regime switch
Alkan, Nazlan Belemir; Sezer, Ali Devin; Başoğlu Kabran, Fatma; Department of Financial Mathematics (2025-1-07)
We study a version of the Avellaneda Stoikov (AS) market-making model, which optimizes the bid and ask spread of the market maker, with regime switch as proposed in the preprint ``Short Term Market Changes and Market Making with Inventory'' by Kim et al. As in the ordinary AS model, under a structural assumption for the value function, the Hamilton Jacobi Bellman equation for the value function reduces to an ordinary differential equation. We note that, as opposed to the ordinary AS model, the resulting O...
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