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Steady-State Entanglement Generation Via Casimir-Polder Interactions
No full textWe investigate the generation of steady-state entanglement between two atoms resulting from the fluctuation-mediated Casimir-Polder (CP) interactions near a surface. Starting with an initially separable state of the atoms, we analyze the atom-atom entanglement dynamics for atoms placed at distances in the range of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document} nm away from a planar medium, examining the effect of medium properties and geometrical configuration of the atomic dipoles. We show that perfectly conducting and superconducting surfaces yield an optimal steady-state concurrence value of approximately 0.5. Furthermore, although the generated entanglement decreases with medium losses for a metal surface, we identify an optimal distance from the metal surface that assists in entanglement generation by the surface. While fluctuation-mediated interactions are typically considered detrimental to the coherence of quantum systems at nanoscales, our results demonstrate a mechanism for leveraging such interactions for entanglement generation.Scientific and Technological Research Council of Turkiye (TUBITAK) [120F089, 123F150]; TUBIdot;TAK; National Science Foundation [PHY-2418249]; John Templeton Foundation [62422]; Army Research Office [W911NF2410080]We thank Stefan Scheel for helpful discussions and feedback following the completion of this work. This work was supported by the Scientific and Technological Research Council of Turkiye (TUB & Idot;TAK) under Project Numbers 120F089 and 123F150. M. I., O. P., and OE. M. thank TUB & Idot;TAK for their support. K.S. acknowledges support from the National Science Foundation under Award No. PHY-2418249, by the John Templeton Foundation under Award No. 62422, and the Army Research Office under Award No. W911NF2410080
Calorie Estimation of Food Items Via Ensembles
No full textÖzet temsiller, ortalama boyut veya hareket gibi nesne gruplarından gelen bilgileri özetleyerek görsel sistemin sınırlı kapasitesine rağmen görsel uyaranların işlenmesini mümkün kılan bilişsel bir süreçtir. Ancak, özet temsiller aracılığı ile ortalama kalori tahminini temsil edip edemeyeceği hala belirsizdir. Geçmiş çalışmalar tek uyaranın yer aldığı işleme süreçlerine odaklanmıştır ancak gerçek hayatta bireyler birden fazla yiyeceğe maruz kalır ve her bir yiyeceği ayrı ayrı tahmin etmek zor olduğundan özet temsiller oluşturabilirler. Bu tezde, birden fazla yiyeceğin kalori seviyesinin özet temsiller aracılığıyla nasıl temsil edilebileceğini araştırılmıştır. Çalışmada, set boyutu (bir setteki uyaran sayısı), kalori seviyesi (yüksek veya düşük) ve düşünme tarzı (analitik veya sezgisel) faktörlerinin kalori tahminindeki aşırı / az tahmin önyargılarını nasıl etkilediği incelenmiştir. Katılımcılar rastgele düşünme tarzı koşullarına atanmış ve set boyutuna (1, 2, 4 veya 6 uyaran) ve kalori seviyesine göre yiyecek fotoğrafları gösterilmiştir. Kalori tahmini, sayısal tahmin görevi ve büyüklük tahmin görevi ile değerlendirilmiştir. Bireysel durum farklılıklarını kontrol etmek için açlık seviyeleri ve yeme davranışları ölçülmüştür. Sonuçlar, katılımcıların özet temsilleri kullanarak ortalama kalorileri tahmin edebildiğini göstermiştir; ancak, gerçek kalori değerleri farklı setlerde benzer olsa bile daha büyük set boyutları ve yüksek kalorili yiyecek setleri daha fazla aşırı tahmine yol açmıştır. Benzer şekilde, büyüklük tahmini görevinde, gerçek kalori değerleri karşılaştırılabilir olsa bile, daha büyük setler için, özellikle yüksek kalorili yiyecekler yer aldığında daha yüksek derecelendirmeler gözlenmiştir, bu set büyüklüğü yanlılığına işaret etmektedir. Analitik düşünme koşulundaki katılımcıların daha yüksek tahmin doğruluğu göstermesi beklenmesine rağmen, düşünme tarzı manipülasyonu başarılı olmamış ve analitik ve sezgisel düşünme tarzı koşulları arasında anlamlı bir fark bulunmamıştır. Benzer şekilde, yeme davranışları, açlık seviyesi ve açlık süresi sayısal tahmin doğruluğunu yordamamıştır. Elde edilen bulgular, özellikle yiyecek sayısının fazla olduğu karmaşık öğün ortamlarında kalori tahmininde aşırı tahmin eğiliminin ortaya çıkabileceğini göstermektedir. Aşırı tahmini artıran faktörlerin belirlenmesi, hatalı kalori tahmininin yeme davranışı ve tüketim kararlarına etkisini anlamak için önemlidir.Ensemble perception is a cognitive process that helps overcome the limited capacity of the visual system by summarizing information from groups of objects. However, it is still unclear if the average calorie estimation can be represented via ensembles. Previous studies focused on single-item calorie estimations; however, in real-life settings, individuals are often exposed to multiple items within a meal, as it would be cognitively demanding to estimate each item independently, they may rely on ensemble perception. This thesis examined the ensemble representation of average food calorie levels. Specifically, effects of set size (i.e., number of items in a set), calorie level (high vs. low), and mindset (deliberative vs. intuitive) influence over/underestimation biases in calorie estimation were examined. Participants were randomly assigned to mindset conditions and viewed food images varying in set size (1, 2, 4, or 6 items) and calorie level. Calorie estimation was assessed by the numeric and magnitude estimation tasks. Hunger levels and eating behaviors were measured to control the state-trait differences. Results showed that participants could estimate average calories using ensembles; however, larger set sizes and high-calorie food sets led to greater overestimation, even when the actual calorie values were similar across different sets. Similarly, in the magnitude estimation task, higher ratings were observed for larger sets, especially for high-calorie foods, even when actual calorie values were comparable, indicating a set size bias. Although participants in the deliberative mindset were expected to show higher estimation accuracy, mindset manipulation was not successful. Similarly, hunger level/duration and eating behaviors didn't predict estimations in both tasks. Overall, these results suggest that an overestimation tendency may occur in calorie estimation, especially in complex meal environments where the number of foods is large. So, identifying the factors that increase overestimation is important to understand their effects on eating behavior and consumption decisions
Emotions and Islandness: Exploring Interactions of Urban Activist Communities in the Prince Islands of Istanbul
No full textThe 2000s will be remembered with the neoliberal urbanism that has rapidly transformed the metropolises throughout the world. Large-scale urban regeneration and renewal activities together with mega projects transformed cities not only spatially but also economically and socially. New accommodation, work, and entertainment spaces and forms were introduced (Todd, 1995). The consequences of this transformation include but are not limited to undermining spatial justice, increasing social inequalities, causing ecological destruction, and displacing many people. These deep wounds inflicted by neoliberal urbanism through dispossession and enclosure are becoming increasingly ordinary in metropolitan areas (Harvey, 2012; Merrifield, 2013). © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024
Sustainable IoT Solutions: Developing a Quantum-Aware Circuit for Improving Energy Efficiency Based on Atomic Silicon
No full textInternet of Things (IoT) can be described as a network of physical objects equipped with sensors, processing power, software, and any other types of technology that allows them to communicate and share data with other devices and systems. The proliferation of IoT is conditional on developing energy-saving blocks of computation with sustained connectivity and real-time information processing capabilities. Traditional technologies like CMOS and VLSI circuits face critical failures at scales below 4 nm, including excessive current leakages, high energy consumption, and thermal instability, which make them less appropriate for future micro-scale IoT chips. To overcome such limitations, a new alternative technology called Atomic Silicon Dangling Bond (ASDB) nanotechnology has been developed, leveraging atomistic accuracy in countering CMOS-related inefficiencies and supporting quantum-inspired computational processes. Since Arithmetic and Logic Unit (ALU) is a primary unit of any digital system like IoT, this work introduces the necessity of quantum-aware ALU development, taking a quantum-inspired computational mechanism and leveraging ASDB's native quantum behavior for increased performance, accuracy, and efficiency in IoT systems. A single-bit ALU for micro-IoT blocks is developed using ASDB nanotechnology with robust computational design to guarantee operational integrity. The design is analyzed through SiQAD simulator in terms of energy consumption, logical accuracy, and area consumption. The proposed ALU in this work demonstrates a reduction in occupied area and quantum cell count, highlighting a significant step toward ultra-dense integration. Furthermore, with an energy consumption reduction of 3.19% compared to the best design, this ALU offers a sustainable and practical solution for lowpower IoT applications in the future
You Should See Me Dance: Objectification of Female Dancers in Dance Films
No full textBu tez, dans filmlerindeki kadın dansçıların nesneleştirilerek estetize edilmesini dans ve sinemanın kesiştiği bir alanda incelemeyi amaçlamaktadır. Dans ve sinema, kadın bedeninin nesneleştirilmesinin ayrıntılı olarak tartışıldığı alanlar olmakla birlikte (Mulvey ve Manning'in çalışmaları gibi), bu kesişen alan her iki disiplin için de tartışma ortamı oluşturmaktadır. Niteliksel film analizi kullanılarak Strictly Ballroom (1992), Dirty Dancing (1987) ve Flashdance (1983) filmleri anlatı ve anlatım tercihleri üzerinden analiz edilmiştir. Filmlerin anlatı yapılarındaki isyan ve özgürleşme vurgusu, kadın dansçıları nesneleştiren anlatım tercihleriyle sıklıkla çatışmaktadır. Ayrıca, özgürleşme süreçleri çoğu zaman kadın karakterin pasifleştirilmesi ya da cinselleştirilmesiyle bir araya gelmektedir.This thesis aims to examine the intersecting area of dance and cinema about aestheticization of female dancers through objectification in dance films. While dance and cinema are fields in which aestheticization and objectification of female bodies are discussed in detail (such as Mulvey's and Manning's works), this intersecting field opens an area for discussion from both disciplines. Using qualitative film analysis, the films Strictly Ballroom (1992), Dirty Dancing (1987) and Flashdance (1983) are analyzed by their narrative and narration choices. The films' accent on rebellion and liberation in their narrative structures often conflict with their narration choices that objectify the female dancers. In addition, the liberation processes often come together with passivation and/or sexualization of the female character
Organizational Career Management in the New Era: Practices, Outcomes, the Role of New Career Orientations and Supervisor Career Support
No full textKurumsal kariyer gelişimi (KKG) ve şirketlerin kariyer yönetimi uygulamaları şeklindeki kariyer yatırımları, yeni kariyer yönelimlerinin (örneğin, çok yönlü kariyer, sınırsız kariyer) ortaya çıktığı giderek değişen çalışma ortamında büyük ilgi görmektedir. Sinyal Teorisi ve Sosyal Değişim Teorisine dayanan bu tez, çalışanların kurumsal kariyer yönetimi uygulamalarını (KKYU) kullanma düzeyleri ile iş sonuçları arasındaki ilişkiyi (a) KKG algılarının aracılık etkisi ve (b) yönetici kariyer desteği ve yeni kariyer yönelimlerinin (örneğin, çok yönlü ve sınırsız kariyer) düzenleyici etkileri yoluyla araştırmaktadır. Bu amaçla, ağırlıklı olarak bankacılık sektöründen 140 beyaz yakalı çalışandan veri toplanmıştır. Sonuçlar, kariyer hedeflerinde ilerleme ve kurumsal ödül algılarının, KKYU kullanımını davranışsal ve tutumsal sonuçlara bağlayan temel aracılar olduğunu göstermiştir. Ayrıca, sonuçlar yönetici kariyer desteğinin KKG ile davranışsal (rol içi ve rol dışı performans) ve tutumsal sonuçlar (işe angaje olma, devamlılık bağlılığı, normatif bağlılık) arasındaki ilişkiyi önemli ölçüde düzenlediğini göstermiştir. Ayrıca, çok yönlü kariyer ve sınırsız kariyer, KKG ile davranışsal sonuçlar (rol içi ve rol dışı performans) arasındaki ilişkiyi önemli ölçüde düzenlemez iken, sadece sınırsız kariyer KKG ile tutumsal sonuçlar (işten ayrılma niyeti, işe angaje olma) arasındaki ilişkiyi düzenlemektedir. Çalışmamız ayrıca KKG algılarının geliştirilmesinde KKYU kullanımının etkinliğine ilişkin hem teorik hem de pratik bilgiler sunmaktadır.Organizational career growth (OCG) and companies' career investments in the form of career management practices have received excessive attention in an increasingly changing work environment where new forms of career orientations (i.e., protean career, boundaryless career) have emerged. Relying on Signaling Theory and Social Exchange Theory, this dissertation investigates the relationship between the level of employees' usage of organizational career management practices (OCMP) and work outcomes through (a) the mediating effect of OCG perceptions and (b) the moderating effects of supervisor career support and new career orientations (i.e., protean and boundaryless career. To this end, data was collected from 140 white-collar employees, mainly from the banking sector. The results demonstrated that career goal progress and organizational reward perceptions are the key mediators linking OCMP usage to behavioral and attitudinal outcomes. Besides, the results showed that supervisor career support significantly moderates the relationship between OCG and behavioral (in-role and extra-role performance) and attitudinal outcomes (work engagement, continuance commitment, normative commitment). Moreover, protean career and boundaryless career do not significantly moderate the relationship between OCG and behavioral outcomes (in-role and extra role performance) while only boundaryless career moderate the relationship between OCG and attitudinal outcomes (turnover intention, work engagement). Our study also offers both theoretical and practical insights into the effectiveness of OCMP usage in developing OCG perceptions
An Approach to Modern Turkish Architecture With a Focus on the Sense of Touch and Privacy: The District of Nişantaşı-Teşvikiye (1910-1970)
No full textBu tez, dokunma ve mahremiyet üzerinden Modern Türk Mimarisine yeni bir bakış açısı sunmayı amaçlamaktadır. Öncelikle modern dönemde dokunma duyusu ve mekân arasındaki ilişkinin nasıl yorumlandığı tartışılmaktadır. Ardından değişen mekân-birey ilişkisi çerçevesinde bu duyunun mekânla etkileşimi fiziksel (haptik) yani tenimizin mekânla etkileşimi ve sosyal (proksemiks) yani diğer bireylerle temasımız olarak incelenir. Ardından dokunma duyusunun somatik duyularla olan bağlantısı ele alınır ve bu duyunun bireyin hareket ve davranışları üzerindeki etkisi modern mekân bağlamında yeniden yorumlanır. Somatik duyunun etkisiyle modern bireyin davranışları ve mekân kullanımı önceki dönemlere göre değişmiştir. Bu bağlamda hareketlerimizi ve bunların mekânsal karşılıklarını anlamak için başkalarıyla ve mekânla olan etkileşimlerimizi vurgulayan mahremiyet kavramı dokunma duyusu ile ilişkilendirilmiştir. Bu süreçte Türk Modern Mimarisinde ev, modern dönemde bu kavramı anlamak için 'yeni bir mahremiyet' oluşturacak şekilde ele alınacaktır. Mahremiyet ilişkisi yemek yeme, oturma, yatma, çömelme, temizlik, uyuma gibi bedensel pratikler üzerinden değerlendirilecek ve ev içindeki dokunsal-somatik pratikler mekânsal olarak analiz edilecektir. Tüm bunların ardından modern evde dokunma ve mahremiyet kavramları Nişantaşı-Teşvikiye odağında incelenecektir. Bölge, dokunma ve mahremiyet kavramlarına odaklanılarak tarihsel bir perspektiften yorumlanacaktır. Sonrasında farklı dönemlere ait konut planları ve dönem defterleri üzerinden kamu-özel-mahremiyet ilişkilerini inceleyen mekânsal analizler sunulacaktır. Sonuç olarak, Türk Modern Mimarlığı'nın modern konutunda dokunma duyusu ve mahremiyet ilişkisinin nasıl kurulduğu Nişantaşı odağında analiz edilecektir.This thesis aims to present a new perspective on Modern Turkish Architecture through touch and privacy. Firstly, how the relationship between the sense of touch and space is interpreted in the modern period is discussed. Then, within the framework of the changing space-individual relationship, the interaction of this sense with space is examined as physical(haptic), that is, the interaction of our skin with space, and social(proxemics), that is, our contact with other individuals. Then, the connection between the sense of touch and somatic senses is discussed, and the effect of this sense on the movement and behavior of the individual is reinterpreted in the context of modern space. With the impact of the somatic sense, the modern individual's behavior and use of space have changed compared to previous periods. In this context, to understand our movements and their spatial correspondences, the concept of privacy, which emphasizes our interactions with others and space, is associated with the sense of touch. In this process, the house in Turkish Modern Architecture will be analyzed to form a 'new privacy' to understand this concept in the modern period. The relationship of privacy will be evaluated through bodily practices such as eating, sitting, lying, squatting, cleaning, and sleeping, and the tactile-somatic practices within the house will be spatially analyzed. After all these, the concepts of touch and privacy in the modern home will be examined with a focus on the Nişantaşı-Teşvikiye. The region will be interpreted from a historical perspective, focusing on touch and privacy. Afterward, spatial analyses examining public-private-privacy relations will be presented through housing plans of different periods and period notebooks. As a result, how the relationship between the sense of touch and privacy is established in the modern house of Turkish Modern Architecture will be analyzed with a focus on Nişantaşı
Interference Mitigation in Joint Communication and Sensing: A Precoding-Based Framework With SSK Modulation
No full textThis paper proposes a joint communication and sensing (JCS) system that integrates multiple-input multipleoutput (MIMO) communication and radar functionalities within a shared spectrum. A novel precoder design incorporating Maximal Ratio Combining (MRC) is proposed to eliminate radar-induced and multi-user interference (MUI), ensuring robust communication while maintaining radar sensing accuracy. The communication subsystem leverages spatial shift keying (SSK) to enhance spectral efficiency, while the radar employs a co-located MIMO configuration for precise target detection. Simulation results show that the proposed system achieves a bit error rate (BER) below 10(-2) at 20 dB signal-to-noise ratio (SNR) and a radar detection probability exceeding 90% at 5 dB SNR, validating its effectiveness in interference management. This approach enables seamless integration of communication and sensing, making it a promising solution for autonomous driving, smart cities, and next-generation wireless networks.Bilateral Scientific Cooperation Program; U.S NSF; Scientific and Technical Research Council of Turkiye (TUBITAK); European COST (Cooperation in Science and Technology) [CA22168, CA19111]This research has been supported by the Bilateral Scientific Cooperation Program with the U.S NSF and the Scientific and Technical Research Council of Turkiye (TUBITAK), Turkiye. It is based upon works from COST Actions CA22168 (6G-PHYSEC) and CA19111 (NEWFOCUS) supported by the European COST (Cooperation in Science and Technology) projects
“Capitalism without Capital” or “Technofeudalism”? Preliminary Thoughts toward a Theory of Knowledge Monopolization
No full textThis article engages with the arguments that the rise of intangible assets, digital platforms, and knowledge monopolies represents either a fundamental transformation of capitalism or the emergence of “technofeudalism.” Drawing from Marxian economic theory, I propose a conceptual framework based on three appearances of knowledge in the economy: commodity, capital, and barriers to entry. Knowledge commodities challenge traditional Marxian value theory because of their infinite reproducibility and near-zero reproduction costs, enabling firms to extract rents rather than directly create new value. Intangible assets increasingly function as capital, intensifying labor exploitation and enabling surveillance and control. Finally, knowledge monopolization reinforces capitalist accumulation and monopolization tendencies by creating barriers to entry. The analysis underscores the persistence of core capitalist logic while highlighting new contradictions posed by digitalization, intangible assets, and intellectual property rights.JEL Classification: B51, O33, O34, L86. © 2025 Elsevier B.V., All rights reserved.Social Science Citation Inde
Experimental Data Analysis of Positive Streamer-Leader Dynamics in Long Air Gaps Under Slow Front Impulse Voltages Using Machine Learning
No full textKnowledge of the electrical discharge characteristics under various voltage conditions is crucial to designing safer and more efficient high-voltage insulation systems. This study presents positive streamer-leader dynamics in the 10-meter rod-plane air gap under slow front positive impulse voltage having a rise time of 1000 microseconds. The realization aims to improve the knowledge of long-gap discharge behavior, which is one of the key aspects in insulation design under high-voltage engineering. The voltage and the current waveforms obtained during experiments were analyzed using a machine-learning-based polynomial regression approach. Besides such analysis, image processing was applied to high-speed camera footage to determine arc lengths for different breakdown stages. Down-sampling was applied to cope with raw data, and the regression models were evaluated in terms of mean squared error (MSE) and R-squared values. The Polynomial regression analysis showed high accuracy in terms of MSE and R-squared values. The image-based analysis demonstrated that a final jump length of nearly 10 m substantiates full leader development to the plane electrode. The results indicate that machine learning and image analysis can accurately model and quantify discharge development in long air gaps. © 2025 IEEE