5916 research outputs found
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Competing against Erdoğan, collaborating with the state: Why did Kiliçdaroğlu fail as the main opposition leader in Turkey?
No full textThe main argument in this article contends that a primary reason why Erdoğanhas managed to stay in power in the last decade despite failure in resolvingnumerous social, domestic, and foreign policy crises stems from Kılıçdaroğlu’sinsistence on sustaining a collaborative relationship with the state. Thisarticle chronicles Kılıçdaroğlu’s political attitude and his loss of CHPleadership in the wake of his ignominious defeat in the 2023 nationalelections. The article uses case examples that highlight and analyze hisefforts at collaborationism during his term as the leader of the CHP
Decentralized multi-agent path finding framework and strategies based on automated negotiation
No full textThis paper introduces a negotiation framework to solve the Multi-Agent Path Finding (MAPF) Problem for self-interested agents in a decentralized fashion. The framework aims to achieve a good trade-off between the privacy of the agents and the effectiveness of solutions. Accordingly, a token-based bilateral negotiation protocol and two negotiation strategies are presented. The experimental results over four different settings of the MAPF problem show that the proposed approach could find conflict-free path solutions albeit suboptimally, especially when the search space is large and high-density. In contrast, Explicit Estimation Conflict-Based Search (EECBS) struggles to find optimal solutions. Besides, deploying a sophisticated negotiation strategy that utilizes information about local density for generating alternative paths can yield remarkably better solution performance in this negotiation framework.Publisher versio
NEGOTIATOR: A comprehensive framework for human-agent negotiation integrating preferences, interaction, and emotion
No full textThe paper introduces a comprehensive human-agent negotiation framework designed to facilitate the development and evaluation of research studies on human-agent negotiation without building each component from scratch. Leveraging the interoperability and reusability of its components, this framework offers various functionalities, including speech-to-text conversion, emotion recognition, a repository of negotiation strategies, and an interaction manager capable of managing gestures designed for Nao, Pepper, and QT, and coordinating message exchanges in a turn-taking fashion. This framework aims to lower the entry barrier for researchers in human-agent negotiation by providing a versatile platform that supports a wide range of research directions, including affective computing, natural language processing, decision-making, and non-verbal communication
Correction: Hi–C interaction graph analysis reveals the impact of histone modifications in chromatin shape
No full textN/ATÜBİTA
High efficiency laser ablation of gold thin film by 2.8 GHz intraburst repetition rate pulses
No full textThis work initially presents our progress in developing a 14 W all-polarization-maintaining (PM) Yb-doped fiber laser system. This system can generate bursts with a 2.8 GHz intra-burst repetition rate and offers flexibility in burst repetition rates, starting from 100 kHz. The laser produces pulse energies up to 210 nJ, which can be dechirped to approximately 650 fs. Subsequently, we utilized the developed laser in thin film gold processing. We sent up to 6.4 W and employed three different intraburst pulse configurations on a 100 nm-thick gold film coated on glass. We achieved a record gold removal efficiency of 125 mu g/W.s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\upmu \text{g}/\text {W.s}\end{document} using similar to\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document}5 nJ pulses. Moreover, we determined an ablation pulse energy threshold of approximately 1 nJ, representing the lowest pulse energy to the best of our knowledge.TÜBİTAK ; European Research Council (ERC)Publisher versio
TEMBUV: Trust ensuring mechanism based on blockchain using uavs and vanets
No full textAfter disasters, the resulting destruction often leads to disruptions in internet and communication, making search and rescue efforts in disaster zones more challenging. Depending on the scale of the disaster area, it is observed that the government-owned vehicles become insufficient. To address these issues, we have developed a blockchain-based trust mechanism to include and regulate privately owned vehicles whose reliability upon entry is uncertain. We propose a blockchain-integrated trust mechanism where everyone can vote to identify malicious components. Our system employs a credit-based DPoS consensus mechanism to ensure reliability. Additionally, we have conducted simulations of our system, testing against various attack models, and subsequently, we have evaluated the results across different metrics. We have assessed the results with metrics ACC (accurate trust decision rate) and Secure Witness Ratio (SWR). Each test shows more than a 90% success rate. We have compared our model with the closest work in the literature LVBS [1]. The tests showed considerable improvement
Game-theoretic agent-based modelling of micro-level conflict: Evidence from the ISIS-Kurdish war
No full textThis article delves into the dynamics of a dyadic political violence case study in Rojava, Northern Syria, focusing on the conflict between Kurdish rebels and ISIS from January 1, 2017, to December 31, 2019. We employ agent-based modelling and a formalisation of the conflict as an Iterated Prisoner's Dilemma game. The study provides a nuanced understanding of conflict dynamics in a highly volatile region, focusing on microdynamics of an intense dyadic strategic interaction between two near-equally- powered actors. The choice of using a model based on the Iterated Prisoner's Dilemma, though a classical approach, offers substantial insights due to its ability to model dyadic, equally-matched strategic interactions in conflict scenarios effectively. The investigation primarily reveals that shifts in territorial control are more critical than geographical or temporal factors in determining the conflict's course. Further, the study observes that the conflict is characterised by periods of predominantly one-sided violence. This pattern underscores that the distribution of attacks, and target choices are a more telling indicator of the conflict nature than specific behavioural patterns of the actors involved. Such a conclusion aligns with the strategic implications of the underlying model, which emphasises the outcome of interactions based on differing aggression levels. This research not only sheds light on the conflict in Rojava but also reaffirms the relevance of this type of game-theoretical approach in contemporary conflict analysis.UK Research & Innovation (UKRI) Engineering & Physical Sciences Research Council (EPSRC) ; TÜBİTAKPublisher versio
Real-time multi-object tracking with YOLOv8
No full textIn this paper, we used advanced deep multi-object trackers for real-time object tracking and models trained with various datasets in YOLOv8 environment. From a wide range of currently developed trackers, the trackers with the best tracking capabilities are used for evaluation in this paper. These are SMILETrack, ByteTrack and BoTSort. Since these object trackers perform tracking via object detection, object detection with YOLOv8, which has passed many performance audits, was used with these trackers to improve tracking performance. The aim of this paper is to obtain a detection model that can accurately detect objects and track at least 15 frames per second in real-time using the trackers described above. In this paper, it is shown that the trained model is able to track 10 different classes of small objects in aerial videos with high accuracy without interruption
Su ve kentsel dokular: İran'ın Yezd'in Qanat sistemi ve oluşum süreci.
No full textThis research has analysed the Qanat system to discern its influence on the formation process of Yazd, Iran. In arid areas where agriculture depends on irrigation, water shortage was one of the main motivations for many innovations, such as the underground watercourse, referred to as the Qanat system. This system played an important role in maintaining and developing civilization on the Iranian plateau [1]. In Yazd, there exist a total of twenty-two Qanats, with only two among them presently retaining water, the Zarch Qanat and the Firozabad Qanat. Regrettably, the remaining twenty Qanats have succumbed to drying up over time [2]. The research has been structured into two primary phases. In the first phase, the study focused on identifying and characterizing the Qanat system. Subsequently, in the second phase, the research has directed a morphological analysis of Yazd. The study has determined the correlations between Yazd's urban configuration and the Qanat system across four distinct scales, the territorial scale, urban scale, urban fabric scale, and building scale. Furthermore, the study has investigated the architectural structures associated with underground watercourses such as cisterns, watermills, and Payabs. The main aim of the research is to recognize the impacts of the Qanat system on the formation process, urban tissue, and architectural characteristics of Yazd. This research has exposed the significant attributes of the Qanat system and illuminated their complex interaction with the formation process of Yazd, Iran.Bu araştırma, İran'ın Yezd'in oluşum süreci üzerindeki etkisini ayırt etmek için Qanat sistemini analiz etti. Tarımın sulamaya bağlı olduğu kurak alanlarda, Qanat sistemi olarak anılan yeraltı su yolu gibi birçok yenilik için su sıkıntısı ana motivasyonlardan biriydi. Bu sistem, İran platosunda medeniyetin sürdürülmesinde ve geliştirilmesinde önemli bir rol oynamıştır [1]. Yezd'de toplam yirmi iki Qanat var, bunlardan sadece ikisi şu anda su tutuyor, Zarç Qanat ve Firozabad Qanat. Ne yazık ki, kalan yirmi Qanat zamanla kurumaya yenik düştü [2]. Araştırma iki ana aşamada yapılandırılmıştır. İlk aşamada, çalışma Qanat sistemini tanımlamaya ve karakterize etmeye odaklandı. Daha sonra, ikinci aşamada, araştırma Yezd'in morfolojik bir analizini yönetti. Çalışma, Yazd'ın kentsel konfigürasyonu ile Qanat sistemi arasındaki korelasyonları, bölgesel ölçek, kentsel ölçek, kentsel kumaş ölçeği ve yapı ölçeği olmak üzere dört farklı ölçekte belirlemiştir. Ayrıca, çalışma sarnıçlar, su değirmenleri ve Payabs gibi yeraltı su yolları ile ilişkili mimari yapıları araştırmıştır. Araştırmanın temel amacı, Qanat sisteminin Yezd'in oluşum süreci, kentsel doku ve mimari özellikleri üzerindeki etkilerini tanımaktır. Bu araştırma, Qanat sisteminin önemli özelliklerini ortaya çıkarmış ve İran'ın Yezd'in oluşum süreciyle karmaşık etkileşimlerini aydınlatmıştır
Pair-efficient reallocation of indivisible objects
No full textWe revisit the classical object reallocation problem under strict preferences. When attention is constrained to the set of Pareto-efficient rules, it is known that top trading cycles (TTC) is the only rule that is strategy-proof and individually rational. We relax this constraint and consider pair efficiency. A rule is pair-efficient if it never induces an allocation at which a pair of agents gain from trading their assigned objects. Remarkably, even in the larger set of pair-efficient rules, we find that TTC is still the only rule that is strategy-proof and individually rational. Our characterization result gives strong support to the use of TTC in object reallocation problems.Publisher versio