Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Article AI-Powered Detection of Hate Speech Against Refugees in Turkish Social Media(Springer Science and Business Media B.V., 2025) Eğin, F.; Bulut, V.; Onan, A.Social media platforms can cause hate speech to spread rapidly, so it is important to address such content. The speed at which hate speech spreads on social media makes it impossible to obstruct such content manually. Artificial intelligence support can be a solution for this. Detecting hate speech with artificial intelligence requires determining which expressions are hate speech. In this research, a study was conducted specifically on hate speech against refugees. Considering that Turkiye is the country with the highest migration after the Syrian Civil War, and the hospitality to approximately 3.9 Syrian people, the study focused on the Turkish language. The research first aims to create a Turkiye dataset of social media posts. Posts containing hate speech were labeled using discourse analysis on this dataset. The next stage of the research is to detect Turkish hate speech against refugees with artificial intelligence. According to the research results, the BERTurk model trained with this dataset achieved an accuracy rate of 85% in the automatic detection of Turkish hate speech. In the current climate, hate speech can spread rapidly in society and can easily lead to violent acts. Therefore, taking the necessary measures against hate speech is crucial. This study is crucial for automatically detecting hate speech in Turkish. © The Author(s), under exclusive licence to Springer Nature B.V. 2025.Conference Object Formulation of Admittance Control of a Surgical Robot About Remote Center of Motion(Springer Science and Business Media B.V., 2025) Balkan, M.A.; Dede, M.İ.C.Minimally invasive surgery procedures require the surgical tools to be moved about an incision point. Robots used for these surgeries must achieve this motion capability. When robots are used alongside the surgeon, additional considerations must be made regulating the surgeon-robot interaction. This paper presents a formulation of a compliance controller, namely an admittance controller, for use in the control of a surgical robot that is directed by physical interaction with the surgeon. The surgical robot in this study is a 6 degrees-of-freedom collaborative robot with a force/torque sensor attached to the distal end of its last joint. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Conference Object Redundancy resolution options for the twin-it-romans robotic hybrid manufacturing system(Springer Science and Business Media B.V., 2025) Gündüz, G.M.; Dede, Mehmet İsmet Can; Kiper, Gökhan; Schmitz, M.; Corves, B.The Twinnig Iztech in Robotics Manufacturing System (TWIN-IT-ROMANS) project funded by EU Horizon -Widera-2023-Access-02-01 aims to develop a hybrid manufacturing system that can perform additive and subtractive manufacturing processes and inline quality control using a robotic system. The system will incorporate a 6-degree-of-freedom robot arm and a positioner with 2-degree-of-freedom, which will operate synchronously. This manipulation system is to be designed for performing different manufacturing operations with different degrees-of-freedom requirements. In order to reveal alternative trajectory planning scenarios for this system, this paper presents an initial review of redundancy resolution approaches for kinematically redundant robotic manipulators. First, the four main approaches for redundancy resolution techniques are introduced. Then main studies on energy minimization and stiffness maximization for kinematically redundant robotic manipulators are reviewed. Similar or new approaches are planned to be generated and implemented for the redundant system for hybrid manufacturing. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Conference Object Pen Holder Design for a Handwriting Education Assistance Robot(Springer Science and Business Media B.V., 2025) Güler, O.; Özdemir, Ekrem; Özdemir, E.; Dede, Mehmet İsmet Can; Balkan, M.A.; Öztürk, Ç.; Dede, M.İ.C.The aim of this work is to contribute to quality education by developing a robot system that can assist in handwriting education. The effects of educational robots on learning motivation and performance enhancement have been proven by various studies. In this context, the handwriting assistive robot aims to ease the work of teachers by enabling students to learn how to write more easily and to provide a platform where students can learn on their own. This robot can contribute to the spread of quality education by supporting equal educational opportunities, especially in disadvantaged areas and in cases where the number of teachers is insufficient. The robot supports three different operation modes: Active Mode, Assistive Mode, and Passive Mode. In this study, the pen holder design of this robot is presented. The final design is suitable for both right- and left-handed users, does not require an additional sensor, and the writing ergonomics is increased by keeping the contact point of the pen with the paper at a constant point independent of the holding style. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Conference Object Towards Sustainable Manufacturing: a Review and Future Directions in Additive Manufacturing of Fiber-Reinforced Polymer Composites(Springer Science and Business Media B.V., 2025) Türkcan, M.Y.; Tetik, Halil; Kurt, B.; Dede, Mehmet İsmet Can; Karaş, B.; Tetik, H.; Shokrani, A.; Dede, M.İ.C.The United Nations Sustainable Development Goals (SDGs) provide a global framework for addressing critical challenges such as climate change, resource scarcity and sustainable industrialization. With increasing demand for products and improving quality of life, linear consumption of materials and resources following the “take-make-waste” is no longer possible. As such, innovative solutions are increasingly necessary to enable circular economy in manufacturing. Additive manufacturing (AM) has emerged as a transformative technology in achieving SDGs by enhancing resource efficiency and minimizing waste. Fiber reinforced composites are a promising application of AM, as they offer the potential to optimize material use, reduce labor and support sustainable production practices. However, there is an urgent need for considering circular economy strategies, life cycle assessment (LCA) frameworks and effective recycling at the end of their lifetime. This study examines additive manufacturing systems for fiber-reinforced composites, their environmental impact and exploring the potential contributions of robotic integration in composite manufacturing to enhanced sustainability. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Conference Object Two Novel Formulations for the Optimum Design of Rack-And Steering Mechanisms(Springer Science and Business Media B.V., 2024) Kiper,G.A numerical and an analytical optimization formulations are presented for design of rack-and-pinion steering mechanisms. The distance between the uprights, the angle between the steering arm and wheel axles are assumed to be predesigned. The numerical method enables design of the steering arm, the rack, the rack offset and then the tie rod length can be computed using the symmetrical configuration of the mechanism. The analytical method results in a cubic polynomial equation, root of which gives only one parameter (steering arm or rack offset) based on the assumption that the rack offset is equal to the half of the difference between the distance between the uprights and the rack. Both methods optimize weighted sum of the least-squares of the error between wheel turning angle generated by the mechanism and desired angle according to Ackermann steering principle. The methods are illustrated with a numerical example. When numerical optimization is used, the error is less than 0.2° for 36° angle range. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.Book Part Citation - Scopus: 4Pressure Sensors Based on Ipmc Actuator(Springer Science and Business Media B.V., 2019) Topcu,G.; Guner,T.; Demir,M.M.Pressure sensors provide information regarding with the magnitude and distribution of force along the interface. To characterize the force as a measurand, pressure sensors convert the force into especially electrical signals. Ionic polymer-metal composites have received great interest in pressure sensor technology apart from soft biomimetic actuator applications. In this chapter, we provide further insight into the IPMC materials in pressure sensor applications in terms of system design, working principle, and preparation. In addition, the current status of applications and markets of pressure sensors is described with reference to some published patents. Moreover, their historical evolution, various designs, and classification are also discussed. © 2019, Springer Nature Switzerland AG.Conference Object Citation - Scopus: 3Four-Bar Function Generation Using Excel Solver(Springer Science and Business Media B.V., 2024) Söylemez,E.; Kiper,G.The Chapter presents a simple and efficient way of approximating a function with a four-bar mechanism using four or five design parameters including one or both of the initial crank angles. The method only involves solution of linear set of equations and evaluating determinants, whereas nonlinear equations are numerically solved using a simple program such as Excel. So, the method is easy to explain and can be taught in an undergraduate course along with the well-known linear three precision point synthesis problem. Precision point synthesis, order synthesis, mixed order synthesis, least squares approximation and extreme point synthesis can all be treated using the same method. The proposed method is illustrated with numerical examples for all mentioned synthesis problems and shown to be quite efficient with very low amount of structural error values. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.Conference Object A Gyrostabilizer Test Setup With Vessel Motion Capability About Its Metacenter(Springer Science and Business Media B.V., 2023) Bozelli, M.R.; Kurt, B.; Dede, M.İ.C.The rolling motion of the vessels decreases the comfort of the passengers and may damage the goods inside. Gyrostabilizers are used for generating anti-rolling torque to stabilize the vessel. This study presents a new test system that can imitate sea states resulting in the rolling motion of the vessel about its metacenter. This new system allows the study of gyrostabilizer control and test of sensory systems without the need for an actual vessel and sea environment. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.Conference Object Optimization of the Flywheel of a Gyrostabilizer by Addressing “fair” Performance Criteria(Springer Science and Business Media B.V., 2023) Kurt, B.; Bozelli, M.R.; Dede, M.İ.C.Gyrostabilizers are used for producing anti-rolling torque to stabilize the undesired rolling motion of a vessel. There are several gyrostabilizer products with different specifications for the same size ships. This paper investigates this issue and proposes “fair” performance criteria for gyrostabilizers considering the targeted sea state conditions. A case study is carried out using the new performance criteria in a gyrostabilizer optimization process. The results indicate that the optimized design can outperform the commercially available products. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.