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- MakaleAçık Erişim2026A Consensus-Edge Initializer for Multi-start 2-opt on the Symmetric Euclidean Travelling Salesman Problem
Saygili, Ahmet Caglar; Kazan, Halim
We study a one-shot consensus-based initializer for multi-start 2-opt on symmetric Euclidean Travelling Salesman Problem (TSP) instances. Given the M local minima from best-of-M 2-opt, we count undirected edge frequencies, greedily assemble a tour from the most frequent edges with a length-biased tie-break, and run a single additional 2-opt descent from this seed. The local search operator is unchanged; the consensus stage reuses existingtours and adds only a small overhead beyond the M descents, and we characterise this overhead analytically while focusing evaluation on tour length improvements. On synthetic Euclidean instances from three generators, we evaluate performance over a grid of problem sizes n and restart budgets M. The consensus + 2-opt pipeline improves best-of-M 2-opt by roughly 3-6% in median tour length with high win rates for n >= 500 and moderate M, while for small n and large M the baseline saturates and gains shrink to zero or slightly negative values. Thus, even a single aggregation step over 2-opt local minima yields a simple, reproducible seed that is beneficial in the practically relevant regime of moderate budgets and larger instances and approximately neutral elsewhere.
- MakaleAçık Erişim2025YOLOv8 for Road DamageRecognition: Deep Learning-Based Segmentation and Detection System
Agdas, Mehmet Tevfik; Arik, Kaan
Road surface detection is critical for improving traffic safety and reducing road maintenance costs. Because traditional methods are time-consuming and costly, deep learning-based image processing techniques offer an important alternative in this field. This study aims to develop a model that automates the detection and segmentation of road surface defects such as potholes, manhole covers, and culverts using deep-learning-based image processing techniques. In this study, a dataset previously used in the literature was preferred. It was observed that object detection was performed using a dataset from the literature. In this study, both object detection and object segmentation were performed using different parameters. To prove the success of object segmentation, both object detection and segmentation were performed using the YOLOv8 algorithm, which has previously obtained successful results. AdamW optimization and Auto Batch parameters were selected for this study. With these parameters, object detection was first performed with the YOLOv8s model, which is one of the variances of the YOLOv8 algorithm with the most successful results in the literature, and a successful 92.8% mAP@50 performance value was obtained according to the sources in the literature. In this study, the YOLOv8n, YOLOv8s, YOLOv8m, and YOLOv8l variance models of the YOLOv8 algorithm were used with the preferred parameters, and segmentation was performed. In object segmentation, a map@50 performance value of 90.9% in all classes and 99.1% in culverts was obtained using the YOLOv8l model. A map@50 performance value of 89.1% for pothole segmentation and 88% for manhole cover segmentation was obtained using the YOLOv8s model. The results of the analyses showed consistency in precision and recall values. These findings contribute significantly to improving road safety, reducing maintenance costs, and supporting sustainable urban infrastructure. Future research could explore integrating multiple data sources and adapt these models to more complex road conditions.
AtıfOpenAlex1
İncele - MakaleAçık Erişim2023The Rise of Household Debt in Global Economy and Türkiye
Birdal, Murat; Acun, Serdar; Onuk, Parla
This paper investigates the rise of household debt and its impact on class relations and the sustainability of capitalism. The analysis begins with a historical perspective on the factors contributing to household debt growth, such as declining wages, increasing pressure on organized labor, and the need to maintain consumer demand in the face of declining profit margins. The paper then compares the dynamics of household debt across countries and examines Turkiye's case in a global context. The findings suggest that unsustainable household debt levels, declining wages, and rising inequality; raise doubts about the long-term sustainability of capitalism as we know it. The paper advocates for rethinking economic policies and practices, prioritizing the well-being and prosperity of the majority.
AtıfWoS2OpenAlex1
İncele - MakaleAçık Erişim2022Scopus SJRQ3Iron Age and Later Periods in an Isolated Region: The Bingol-Solhan Fortress
Danismaz, Harun; Köroglu, Kemalettin
Solhan Kalesi [Solhan Fortress] lies at the western tip of the Solhan Plain from which it derives its name. The fortress site was discovered in 2019 during surveys. Drywall fortifications reinforced with bastions and foundations from various buildings inside the fortification walls have been documented at the site. Ceramics and slag found at Solhan Fortress indicate that the site may have been a tribal center in the Iron Age. However, the architectural features of the fortress, especially the fortifications with bastions, are notably different from other Iron Age sites in the region. Surface finds do not include painted or glazed ceramics from the Medieval Period. Current findings indicate Solhan Fortress to have been inhabited for a long period from the Middle Iron Age to the Medieval Period.
AtıfWoS1İncele - MakaleYalnız künye2015REPRESENTATION OF 'THE OTHER' IN CARTOONS PUNKY AND LES BLAGUES DE TOTO
Kenes, Hatice Coban
It can be claimed that many cartoons of domestic and international origin such as Caillou, Conni, Niloya, Pepee, Canim Kardesim, Biz Ikimiz, Can, which are broadcast and re-broadcast in mainstream media, are constructed upon 'sterile' characters. The protagonists in these idealized cartoons are urban middle and upper class families. Mothers and fathers are attentive not only towards each other but also towards their children, with no difficulty in expressing their affection. Fights, problems and even insignificant disputes are non-existant and life continues free of any problems. On the other hand, not all spectators of these cartoons can be claimed to associate with this 'sterile' media environment presented. Children of different ethnic and religious origins; children who are disabled, handicapped, poor; children who have a single parent and/or raised in unhappy environments or in disquiet do not exist in such cartoons. Within this framework, this study problematizes the representation of 'other' children in the cartoons, which are products of popular culture which mediate the understanding of daily experiences and the 'other' by the spectators. In this context this study aims to reveal how the 'other' children are represented in cartoons entitled Punky and Les Blagues De Toto which fall beyond the scope of the ordinary narrative of mainstream cartoons and which constitute rare examples within the national media.
- DergiACTA INFOLOGICA
- DergiISTANBUL UNIVERSITESI ILETISIM FAKULTESI DERGISI
- DergiISTANBUL IKTISAT DERGISI-ISTANBUL JOURNAL OF ECONOMICS
- DergiEKOIST-JOURNAL OF ECONOMETRICS AND STATISTICS