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Fluctuation theory of omega-killed Lévy processes Şimşek, Meral; Yozgatlıgil, Ceylan; Papaioannou, Apostolos; Department of Statistics (2024-3) This thesis explores the fluctuation identities for omega-killed (reflected) processes. In the first part, we develop the theory of the so-called $\mathcal{W}_q$ and $\mathcal{Z}_q$ scale functions for the fluctuations of right-continuous discrete time and space killed random walks. Explicit expressions are derived for the resolvents and two-sided exit problems when killing depends on the present level of the process. Similar results in the reflected case are also considered. All the derivations are given i...
BURSA İPEK SANAYİİNDE TEKNOLOJİK GELİŞMELER 1835 - 1865 Erder, Leila (ODTÜ İktisadi ve İdari Bilimler Fakültesi, 1978)
BURSA İPEK SANAYİİNİN MALİYET YAPISI ÜZERİNDE DÜŞÜNCELER VE HAM İPEK FİYATLARI (1550 - 1650) Çizakça, Murat (ODTÜ İktisadi ve İdari Bilimler Fakültesi, 1978)
XVI. YÜZYILIN SONLARINDA OSMANLI PARASI ÜZERİNDE YAPILAN İŞLEMLERE İLİŞKİN BAZI BİLGİLER Ergene, Özer (ODTÜ İktisadi ve İdari Bilimler Fakültesi, 1978)
16. YÜZYILDA BATI VE GÜNEY SANCAKLARINDA BELİRLİ ARALIKLARLA KURULAN PAZARLAR (İÇEL, HAMİD, KARAHİSAR-I SAHİB, KÜTAHYA, AYDIN VE MENTEŞE) Faroqhi, Suraiya (ODTÜ İktisadi ve İdari Bilimler Fakültesi, 1978)
OSMANLI PARA TARİHİNDE DÜNYA PARA VE MADEN HAREKETİNİN YERİ Sahillioğlu, Halil (ODTÜ İktisadi ve İdari Bilimler Fakültesi, 1978)
The ‘PROTECT’ Essential Elements in Managing Crisis Data Policies Zhang, Lili; Ekmekci, Perihan Elif; Murray, Virginia; Başbuğ Erkan, Berna Burçak; Crawley, Francis P.; Li, Xueting; Li, Yandi (2024-01-01) Based on a literature review, policy study, and a conference session discussion, this paper systematically analyzed seven predominant elements in crisis data policies, namely ‘people, resources, operation, technology, ethics, communication, and trust,’ abbreviated as the ‘PROTECT’ essentials. As a guiding checklist for crisis data policy, implementing the ‘PROTECT’ essentials should follow the guiding principles, in which people should be united to understand each other better and get prepared for intelligi...
Reanalysis of rare radiative Ξb- → Ξ-γ decay in QCD Alıyev, Tahmasıb; Özpineci, Altuğ; Sarac, Y. (2024-03-01) The upper limit of the branching ratio of the rare Ξb-→Ξ-γ decay is obtained as BR(Ξb-→Ξ-γ)<1.3×10-4 by the LHCb. In the present work we study this decay within the light cone QCD sum rules employing the Ξb distribution amplitudes. At the first stage, the form factors entering the Ξb-→Ξ-γ decay are obtained. Next, using the results for the form factors the corresponding branching ratio for this decay is estimated to be BR(Ξb-→Ξ-γ)=(4.8±1.3)×10-5. This value lies below the upper limit established by the LHCb...
Generating the level 2 subgroup by involutions Altunöz, Tülin; Monden, Naoyuki; Pamuk, Mehmetcik; Yıldız, Oğuz (2024-04-15) We obtain a minimal generating set of involutions for the level 2 subgroup of the mapping class group of a closed nonorientable surface.
Editorial: Metal transport in plants, volume II Clemens, Stephan; Eroğlu, Seçkin; Grillet, Louis; Nozoye, Tomoko (2024-01-01)
Comparison of Linear and Nonlinear Twist Extrusion Processes with Crystal Plasticity Finite Element Analysis Şimşek, Ülke; Davut, Kemal; Miyamoto, Hiroyuki; Yalçınkaya, Tuncay (2024-03-01) The mechanical characteristics of polycrystalline metallic materials are influenced significantly by various microstructural parameters, one of which is the grain size. Specifically, the strength and the toughness of polycrystalline metals exhibit enhancement as the grain size is reduced. Applying severe plastic deformations (SPDs) has a noticeable result in obtaining metallic materials with ultrafine-grained (UFG) microstructure. SPD, executed through conventional shaping methods like extrusion, plays a pi...
Closed-Form Dyadic Green’s Functions for Dipole Excitation of Planar Periodic Structures Adanir, Suleyman; Alatan, Lale (2024-01-01) The analysis of a single source in the vicinity of periodic structures is a very challenging task since the aperiodic source forbids a direct application of a periodic analysis method to the problem. Full wave methods addressing these problems involve infinite summations and double integrations which make the analysis cumbersome. Homogenization based methods reduce this complexity but at the expense of a loss of accuracy and flexibility in handling different kinds of structures. Moreover, the resulting Gree...
Pre-enrichment-free detection of hepatocellular carcinoma-specific ctDNA via PDMS and MEMS-based microfluidic sensor Çağlayan Arslan, Zeynep; Okan, Meltem; Külah, Haluk (2024-05-01) The growing interest in microfluidic biosensors has led to improvements in the analytical performance of various sensing mechanisms. Although various sensors can be integrated with microfluidics, electrochemical ones have been most commonly employed due to their ease of miniaturization, integration ability, and low cost, making them an established point-of-care diagnostic method. This concept can be easily adapted to the detection of biomarkers specific to certain cancer types. Pathological profiling of hep...
5,6-dimethylxanthenone-4-acetic acid (DMXAA), a partial STING agonist, competes for human STING activation Temizoz, Burcu; Shibahara, Takayuki; Hioki, Kou; Hayashi, Tomoya; Kobiyama, Kouji; Lee, Michelle Sue Jann; Surucu, Naz; Sag, Erdal; Kumanogoh, Atsushi; Yamamoto, Masahiro; Gürsel, Mayda; Ozen, Seza; Kuroda, Etsushi; Coban, Cevayir; Ishii, Ken J. (2024-01-01) 5,6-dimethylxanthenone-4-acetic acid (DMXAA) is a mouse-selective stimulator of interferon gene (STING) agonist exerting STING-dependent anti-tumor activity. Although DMXAA cannot fully activate human STING, DMXAA reached phase III in lung cancer clinical trials. How DMXAA is effective against human lung cancer is completely unknown. Here, we show that DMXAA is a partial STING agonist interfering with agonistic STING activation, which may explain its partial anti-tumor effect observed in humans, as STING wa...
Probabilistic modeling of dam failure scenarios: a case study of Kanlikoy Dam in Cyprus Turkel, A.O.; ZAİFOĞLU, HASAN; Yanmaz, Ali Melih (2024-01-01) One of the most perilous natural hazards is flooding resulting from dam failure, which can devastate downstream infrastructure and lead to significant human casualties. In recent years, the frequency of flash floods in the northern part of Nicosia, Cyprus, has increased. This area faces increased risk as it lies downstream of the Kanlikoy Dam, an aging earth-fill dam constructed over 70 years ago. In this study, we aim to assess potential flood hazards stemming from three distinct failure scenarios: piping,...
High Aspect Ratio Composite Wings: Geometrically Nonlinear Aeroelasticity, Multi-Disciplinary Design Optimization, Manufacturing, and Experimental Testing Farsadi, Touraj; Ahmadi, Majid; Şahin, Melin; Haddad Khodaparast, Hamed; Kayran, Altan; Friswell, Michael I. (2024-03-01) In the field of aerospace engineering, the design and manufacturing of high aspect ratio composite wings has become a focal point of innovation and efficiency. These long, slender wings, constructed with advanced materials such as carbon fiber and employing efficient manufacturing methods such as vacuum bagging, hold the promise of significantly lighter aircraft, reduced fuel consumption, and enhanced overall performance. However, to fully realize these benefits, it is imperative to address a multitude of s...
Investigating Mind Perception in HRI through Real-Time Implicit and Explicit Measurements Pekçetin, Tuğçe Nur; Acartürk, Cengiz; Urgen, Burcu A. (2024-03-11) Social robots have revolutionized social interaction and communication. This study explores our perception of robots, focusing on the factors influencing evaluations of Agency and Experience - two dimensions of mind perception. Three distinct aspects of our research include: investigating perceiver determinants alongside perceived agents and their actions, utilizing a naturalistic setup featuring live actions of both human and robot actors, and employing a comprehensive approach with both implicit and expli...
Uncovering Engagement Profiles of Young Learners in K–8 Education through Learning Analytics Er, Erkan; Silik, Safak; Cansiz, Sergen (2024-01-01) E-learning platforms have become increasingly popular in K–8 education to promote student learning and enhance classroom teaching. Student interactions with these platforms produce trace data, which are digital records of learning processes. Although trace data have been effective in identifying learners’ engagement profiles in higher education and lifelong learning (e.g., MOOCs), similar research on young learners has been very scarce. This study makes a timely and novel contribution to the field by identi...
Eliminating Media Noise While Preserving Storage Capacity: Reconfigurable Constrained Codes for Two-Dimensional Magnetic Recording Guzel, Iven; Özbayrak, Doğukan; Calderbank, Robert; Hareedy, Ahmed (2024-01-01) Magnetic recording devices are still competitive in the storage density race with solid-state devices thanks to new technologies such as two-dimensional magnetic recording (TDMR). TDMR offers remarkable storage density increase without the need for new magnetic materials; however, advanced data processing schemes are needed to guarantee reliability. Data patterns where a bit is surrounded by complementary bits at the four positions with Manhattan distance 1 on the TDMR grid are called plus isolation (PIS) p...
Gradient-descent hardware-aware training and deployment for mixed-signal neuromorphic processors Cakal, Ugurcan; Maryada, Maryada; Wu, Chenxi; Ulusoy, İlkay; Muir, Dylan Richard (2024-03-01) Mixed-signal neuromorphic processors provide extremely low-power operation for edge inference workloads, taking advantage of sparse asynchronous computation within spiking neural networks (SNNs). However, deploying robust applications to these devices is complicated by limited controllability over analog hardware parameters, as well as unintended parameter and dynamical variations of analog circuits due to fabrication non-idealities. Here we demonstrate a novel methodology for offline training and deploymen...