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A Comparative Perspective to Blockchain-Based Smart Contracts: Turkish And European Approaches
No full textBlokzinciri teknolojisine dayalı akıllı sözleşmeler, sözleşmeler hukuku perspektifinden bakıldığında son birkaç yılda çok sayıda hukukçunun ilgisini çekmiştir. Akıllı sözleşmelerin finansal hizmetler sektöründen şirketler hukukuna, veri paylaşımından tüketici sözleşmelerine uzanan birçok kullanım alanı bulunduğu için önümüzdeki yıllarda da gündemde olacakları söylenebilir. Blokzinciri teknolojisinin 1990lı yılların internetiyle karşılaştırılan potansiyeli ve blokzinciri teknolojisine dayanan akıllı sözleşmelerin avantajları da göz önünde bulundurulduğunda, akıllı sözleşmelere uygulanacak hukuk kurallarının tespiti birçok hukukçunun odak noktası olmuştu
Tracking Step Counts in Adolescents With Juvenile Idiopathic Arthritis and Familial Mediterranean Fever: a 3-Month M-Health Monitoring Study Using Smartwatches
No full textAcknowledgements: This study was supported by the TUBITAK 1001-Scientific and Technological Research Projects Support Program with project number 121E690."TUBITAK 1001-Scientific and Technological Research Projects Support Program [121E690, TUBITAK 1001-Scientific
A Machine Learning Approach To Resolving Conflicts in Physical Human-Robot Interaction
No full textAs artificial intelligence techniques become more sophisticated, we anticipate that robots collaborating with humans will develop their own intentions, leading to potential conflicts in interaction. This development calls for advanced conflict resolution strategies in physical human-robot interaction (pHRI), a key focus of our research. We use a machine learning (ML) classifier to detect conflicts during co-manipulation tasks to adapt the robot's behavior accordingly using an admittance controller. In our approach, we focus on two groups of interactions, namely "harmonious"and "conflicting,"corresponding respectively to the cases of the human and the robot working in harmony to transport an object when they aim for the same target, and human and robot are in conflict when human changes the manipulation plan, e.g. due to a change in the direction of movement or parking location of the object.Co-manipulation scenarios were designed to investigate the efficacy of the proposed ML approach, involving 20 participants. Task performance achieved by the ML approach was compared against three alternative approaches: (a) a rule-based (RB) Approach, where interaction behaviors were rule-derived from statistical distributions of haptic features; (b) an unyielding robot that is proactive during harmonious interactions but does not resolve conflicts otherwise, and (c) a passive robot which always follows the human partner. This mode of cooperation is known as "hand guidance"in pHRI literature and is frequently used in industrial settings for so-called "teaching"a trajectory to a collaborative robot.The results show that the proposed ML approach is superior to the others in task performance. However, a detailed questionnaire administered after the experiments, which contains several metrics, covering a spectrum of dimensions to measure the subjective opinion of the participants, reveals that the most preferred mode of interaction with the robot is surprisingly passive. This preference indicates a strong inclination toward an interaction mode that gives more control to humans and offers less demanding interaction, even if it is not the most efficient in task performance. Hence, there is a clear trade-off between task performance and the preferred mode of interaction of humans with a robot, and a well-balanced approach is necessary for designing effective pHRI systems in the future. © 2025 Copyright held by the owner/author(s).The authors acknowledge Feras Kiki for his technical assistance in labeling the data, participating in the initial system tests, and rendering some figures featured in this manuscript. Furthermore, they express sincere thanks to the participants whose active involvement and cooperation played a pivotal role in the successful execution of the experiments. The first author also acknowledges the research fellowship provided by the KUIS AI-Center.KUIS AI-Cente
Sociosexuality is associated with disease avoidance tendencies and can decrease during a real-life disease threat
No full textEngaging in uncommitted sexual relationships increases the risk of pathogen transmission through close contact with novel partners. As such, greater disease avoidance tendencies may be associated with lower sociosexuality. Across three studies, we examined this proposition. In Studies 1a and 1b, we cross-sectionally assessed the associations between individual differences in disease avoidance (i.e., germ aversion, perceived infectability) and sociosexuality dimensions (i.e., behavior, attitude, desire). Greater germ aversion was significantly associated with more restricted sociosexuality across all three dimensions and replicated in both samples. Perceived infectibility was associated with more unrestricted sociosexual attitude and desire, but only in Study 1a. In Study 2, we tested whether sociosexuality levels changed with the COVID-19 pandemic. Participants reported more restricted sociosexuality levels during the COVID-19 pandemic compared to prepandemic levels, where a decrease was especially seen in sociosexual desire. Further, this decrease in sociosexual desire was predicted by pre-pandemic germ aversion levels. Overall, the findings indicate that disease avoidance tendencies (i.e., germ aversion) and real-life disease threat are associated with lower tendency to engage in uncommitted sexual relationships. Further research is needed to understand the causal relation of these two constructs, which may help in developing interventions and campaigns to support better sexual health
Bahçe Galata’da Nora 2: Oyunbozan bir inceleme
No full textBu yazıda Sara Ahmed'in Oyunbozan Feminist kuramı bağlamında Henrik Ibsen'in Bir Bebek Evi ve Bahçe Galata tarafından sahnelenen Lucas Hnath'ın Nora 2 adlı oyunları incelenmiştir
Reconnaissance and Discussion on Ground Motion Induced by the 2023 Türkiye-Syria Earthquake
No full textThis paper discusses the output from the damage reconnaissance conducted after the 2023 Türkiye-Syria earthquake. First, a large landslide occurred in a limestone gentle slope without much ground water. Second, the ground subsidence in the coastal area does not comply the the local soil conditions and other observed post-seismic situations. Third, the acceleration records exhibit stronger motion with longer period and shorter duration towards the western end of the causative fault and suggest supershear rupture. To understand these features of the ground motion, this paper proposes a hypothetical model that can reproduce these observations to a good extent. © 2025 Taylor ; Francis Group, LLC.Chuo Kaihatsu Corporation in Toky
Determining the Effect of Video Information on the Dental Anxiety Levels of the Endodontic Patients: a Randomised Clinical Trial
No full textObjective The present study assessed the effectiveness of pretreatment education in the form of Visual Video Information (VVI) on the anxiety levels of patients during endodontic treatment steps. Methods Patients (n = 120) having single-rooted teeth with a single root canal diagnosed with asymptomatic irreversible pulpitis and/or pre-prosthetic root canal treatment were included in this study. After completing anxiety scales and a sociodemographic/dental habits survey, the patients were randomly divided into two groups. Just before the endodontic treatment, VVI was given to the video group patients, while the control group patients received routine information verbally. In both groups, a galvanic skin response (GSR) device was placed on the patients' wrists to record the stress levels during the endodontic treatment process. Anxiety scales and a feedback-satisfaction survey were administered to all patients after the treatment process. Then, statistical analysis was performed (alpha = 0.05). Results This study performed 60 endodontic treatments on 60 patients (30 females and 30 males). Sociodemographic characteristics and dental treatment habits of the patients significantly affected dental anxiety scale scores (p 0.05). VVI resulted in a significant decrease in the mean scores of anxiety before and after the treatment, but this decrease was not significant between the groups (p > 0.05). Similarly, VVI did not impact the GSR readings between the groups during treatment (p > 0.05). Conclusions The educational VVI is effective for reducing anxiety in patients undergoing endodontic treatment. In addition, the electrodermal activity method is a promising alternative for objectively assessing anxiety levels.Aydin Adnan Menderes University Research Foundation [DHF-19018]This study was supported by Aydin Adnan Menderes University Research Foundation (DHF-19018). The foundation had no role in performing or publishing the study
Effect of Boron Addition To Steel on Mechanical Properties
No full textIn the production of qualified steel, if 5–30 ppm boron is present in the product, the hardenability of the steel increases significantly by the case hardening process. This small amount of boron content reduces the austenite grain size (by preventing grain growth) and increases the matrix hardness through the precipitates formed.With the addition of boron, it is possible to obtain the desired hardness depth due to the cementation applied especially in gear parts. This result obtained in boron steels is similar to Cr, Mn, Mo, Ni, etc., which are used in conditions where boron is not used. In other words, the use of boron as a microalloying element also provides cost savings. In this study, the parameters affecting the hardenability of steel by boron addition amounts in steel production using ferroboron were investigated on the basis of chemical content, metallographic structure, and mechanical properties. © The Minerals, Metals ; Materials Society 2025
Nbmovta Refractory High-Entropy Alloy Incorporated Wni Matrix Composite as a Future Plasma-Facing Material: Evaluation of Mechanical Properties and Helium Ion Irradiation Behavior
No full textRefractory high-entropy alloys (RHEAs) have gained attention in the last decades with their high mechanical strength, self-healing mechanism, and high irradiation resistance. These materials are evaluated to have a high potential as plasma-facing materials for fusion reactors. In this study, helium ion irradiation and mechanical behaviors of the RHEA-reinforced WNi matrix composites were investigated based on this perspective. Equimolar molybdenum, niobium, tantalum and vanadium powders were mechanically alloyed for 6 h to produce NbMoVTa RHEA with a single BCC phase. Then, different amounts (10, 20, 30, and 40 wt%) of RHEA were added into the W1Ni (containing 99 wt% W and 1 wt% Ni) matrix by planetary ball milling for 72 h. Consolidation was conducted by spark plasma sintering technique (1410 degrees C, 1 min). X-ray diffraction, scanning electron microscopy coupled with energy dispersion spectroscopy, and Archimedes' density analyses were performed on the composites. Moreover, wear and hardness properties of the composites were examined, and the lowest specific wear rate (0.59 mm3/N.m x 10- 5) and the highest hardness value (10.10 GPa) were found for the W1Ni-40RHEA composite. Helium irradiation was exposed to the composites to observe their irradiation resistance. It was observed that the lowest increment and the least deformation were obtained with the SPS'ed W1Ni-40RHEA composite. With the analysis of He+ irradiation, it was determined that the effect of radiation on mechanical properties is irrelevant. Also, it was observed that the addition of RHEA into the W matrix can create a high potential for using plasma-facing material. Moreover, it decreased the problems of tungsten against He+ irradiation.Scientific Research Projects Department of Istanbul Technical University [MGA-2024-45483]; Scientific and Technological Research Council of Turkiye (TUBITAK) [119M980]This work was financially supported by the Scientific Research Projects Department of Istanbul Technical University with the project number of MGA-2024-45483. Also, the optimization of refractory high entropy alloys was conducted within the scope of the 119M980 project supported by the Scientific and Technological Research Council of Turkiye (TUBITAK) . The authors thank Mertcan Kaba and Prof. Dr. Hueseyin Cimenoglu for their help in conducting wear tests in the Mechanical Metallurgy Laboratories at Istanbul Technical University. The authors also thank Mustafa Dolkan and Hakan Arslan for their help in wire erosion cutting
