WoS İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/8653
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Conference Object Relationship of Internet Gaming Disorder Symptoms With Self-Mutilative Behaviour Among Young Adults(Cambridge Univ Press, 2019) Evren, C.; Evren, B.; Dalbudak, E.; Topcu, M.; Kutlu, N.Conference Object Relationship of Difficulties in Emotion Regulation With History of Suicide Attempt Among Young Adults(Cambridge Univ Press, 2019) Evren, C.; Evren, B.; Dalbudak, E.; Topcu, M.; Kutlu, N.Conference Object Relationship of Difficulties in Emotion Regulation With Attention Deficit/Hyperactivity Disorder Among Young Adults(Cambridge Univ Press, 2019) Evren, C.; Evren, B.; Dalbudak, E.; Topcu, M.; Kutlu, N.Article Citation - WoS: 3Citation - Scopus: 3Vampire Versus the Empire: Bram Stoker's Reproach of Fin-De Britain in Dracula(Cambridge Univ Press, 2018) Koc, Ertugrul; Demir, YagmurArticle Citation - WoS: 2Citation - Scopus: 2Kinematic Design and Analysis of a Novel Overconstraint Walking Mechanism(Cambridge Univ Press, 2025) Selvi, Ozgun; Cindioglu, Cagri; Ider, Sitki Kemal; Ceccarelli, MarcoWalking mechanisms offer advantages over wheels or tracks for locomotion but often require complex designs. This paper presents the kinematic design and analysis of a novel overconstrained spatial a single degree-of-freedom leg mechanism for walking robots. The mechanism is generated by combining spherical four-bar linkages into two interconnecting loops, resulting in an overconstrained design with compact scalability. Kinematic analysis is applied using recurrent unit vector methods. Dimensional synthesis is performed using the Firefly optimization algorithm to achieve a near-straight trajectory during the stance phase for efficient walking. Constraints for mobility, singularity avoidance, and transmission angle are also implemented. The optimized design solution is manufactured using 3D printing and experimentally tested. Results verify the kinematic properties including near-straight-line motion during stance. The velocity profile shows low perpendicular vibrations. Advantages of the mechanism include compact scalability allowing variable stride lengths, smooth motion from overconstraint, and simplicity of a single actuator. The proposed overconstrained topology provides an effective option for the leg design of walking robots and mechanisms.Article Rock-Cut Facades: Conveyors of 'false Monumentality in Byzantine Cappadocia(Cambridge Univ Press, 2022) Ozturk Buke, Fatma GulThe monumental rock-cut facades of the tenth to eleventh century-mansions - so-called courtyard complexes - in Cappadocia, central Turkey, are rare examples of secular Byzantine architecture. While these symmetrically designed facades adorned with superimposed arches differ from the simpler ones (both carved and built) in the region, they bear striking similarities to others from the broader Mediterranean basin. This article offers new insights into the discussion on the uniqueness of the rock-cut facades of courtyard complexes and reconsiders the raison d'etre of this 'false' monumentality in the rural setting of Byzantine Cappadocia.Article Citation - WoS: 1Citation - Scopus: 1Prediction of the Onset of Shear Localization Based on Machine Learning(Cambridge Univ Press, 2023) Ayli, Ece; Ulucak, Oguzhan; Ugurer, Doruk; Akar, Samet; Ayll, EcePredicting the onset of shear localization is among the most challenging problems in machining. This phenomenon affects the process outputs, such as machining forces, surface quality, and machined part tolerances. To predict this phenomenon, analytical, experimental, and numerical methods (especially finite element analysis) are widely used. However, the limitations of each method hinder their industrial applications, demanding a reliable and time-saving approach to predict shear localization onset. Additionally, since this phenomenon largely depends on the type and parameters of the constitutive material model, any change in these parameters requires a new set of simulations, which puts further restrictions on the application of finite element modeling. This study aims to overcome the computational efficiency of the finite element method to predict the onset of shear localization when machining Ti6Al4V using machine learning methods. The obtained results demonstrate that the FCM (fuzzy c-means) clustering ANFIS (adaptive network-based fuzzy inference system) has given better results in both training and testing when it is compared to the ANN (artificial neural network) architecture with an R-2 of 0.9981. Regarding this, the FCM-ANFIS is a good candidate to calculate the critical cutting speed. To the best of the authors' knowledge, this is the first study in the literature that uses a machine learning tool to predict shear localization.Article Citation - WoS: 1Citation - Scopus: 1Kinematic Analysis of Overconstrained Manipulators With Partial Subspaces Using Decomposition Method(Cambridge Univ Press, 2022) Selvi, OzgunOverconstrained manipulators in lower subspaces with unique motions can be created and analyzed. However, far too little attention has been paid to creating a generic method for overconstrained manipulators kinematic analysis. This study aimed to evaluate a generic methodology for kinematic analysis of overconstrained parallel manipulators with partial subspaces (OPM-PS) using decomposition to parallel manipulators (PMs) in lower subspaces. The theoretical dimensions of the method are depicted, and the use of partial subspace for overconstrained manipulators is portrayed. The methodology for the decomposition method is described and exemplified by designing and evaluating the method to two overconstrained manipulators with 5 degrees of freedom (DoF) and 3 DoF. The inverse kinematic analysis is detailed with position analysis and Jacobian along with the inverse velocity analysis. The workspace analysis for the manipulators using the methodology is elaborated with numerical results. The results of the study show that OPM-PS can be decomposed into PMs with lower subspace numbers. As imaginary joints are being utilized in the proposed methodology, it will create additional data to consider in the design process of the manipulators. Thus, it becomes more beneficial in design scenarios that include workspace as an objective.Article Citation - WoS: 3Citation - Scopus: 4Effect of Defects on Graphitization of Sic(Cambridge Univ Press, 2013) Buke, Goknur Cambaz; Yushin, Gleb; Mochalin, Vadym; Gogotsi, YuryEpitaxial graphene and carbon nanotubes (CNTs) grown on SiC have shown big potential in electronics. The motivation to produce faster and smaller electronic devices using less power opened the way to a study of how to produce controlled epitaxial graphene and CNTs on SiC. Since defects are among the important tools to control the properties of materials, the effects of defects on the carbon formation on SiC have been analyzed. In this study, the effects of defects on the carbon formation on SiC have been analyzed. We produced carbon films on the surface of four different SiC materials (polycrystalline sintered SiC disks, single crystalline SiC wafers, SiC whiskers, and nanowhiskers) by chlorination and vacuum annealing with the goal to understand the effects of surface defects on the carbon structure and the SiC decomposition rate. We have shown that grain boundaries, dislocations, scratches, surface steps, and external surfaces may greatly enhance the reaction rate and affect the final structure of carbon derived from SiC.Review Citation - WoS: 1Unconstitutional Constitutional Amendments: the Limits of Amendment Powers(Cambridge Univ Press, 2017) Acar, Ali