TY - JOUR AU - Tóth, Balázs AU - Molnár, Zsombor AU - Kovács, Róbert Sándor TI - Two-field mixed hp-finite elements for time-dependent problems in the refined theories of thermodynamics JF - CONTINUUM MECHANICS AND THERMODYNAMICS J2 - CONTINUUM MECH THERM PY - 2024 SN - 0935-1175 DO - 10.1007/s00161-024-01300-9 UR - https://m2.mtmt.hu/api/publication/34757577 ID - 34757577 AB - Modern manufacturing technologies allow heterogeneous materials with complex inner structures (e.g., foams) to be easily produced. However, their utilization is not straightforward, as the classical constitutive laws are not necessarily valid. According to various experimental observations, the Guyer–Krumhansl equation is a promising candidate for modeling such complex structures. However, practical applications need a reliable and efficient algorithm capable of handling both complex geometries and advanced heat equations. In the present paper, we derive new two-field variational formulations which treat the temperature and the heat flux as independent field variables, and we develop new, advanced hp -type mixed finite element methods, which can be reliably applied. We investigate their convergence properties for various situations, challenging in relation to stability and the treatment of fast propagation speeds. That algorithm is also proved to be outstandingly efficient, providing solutions four magnitudes faster than commercial algorithms. LA - English DB - MTMT ER - TY - JOUR AU - Iskandar, Alaa AU - Kovács, Béla TI - Investigating the Impact of Curriculum Learning on Reinforcement Learning for Improved Navigational Capabilities in Mobile Robots JF - INTELIGENCIA ARTIFICIAL J2 - Intel Artif VL - 27 PY - 2024 IS - 73 SP - 163 EP - 176 PG - 14 SN - 1137-3601 UR - https://m2.mtmt.hu/api/publication/34757573 ID - 34757573 LA - English DB - MTMT ER - TY - JOUR AU - Kollár, Adrienn AU - Skapinyecz, Róbert AU - Erdei, László TI - A simulation based comparative analysis of interconnected signalized intersections and roundabouts from the aspect of permeability JF - EUROPEAN TRANSPORT / TRASPORTI EUROPEI J2 - EU TRANSPORT VL - 96 PY - 2024 SP - 1 EP - 18 PG - 18 SN - 1825-3997 DO - 10.48295/ET.2024.96.7 UR - https://m2.mtmt.hu/api/publication/34757562 ID - 34757562 AB - The utilization of the tools provided by digitalization became increasingly important for the micro-level modelling of road traffic, since it typically takes the form of a highly dynamic system. In the publication, the PTV Vissim traffic simulation software is used for the modelling of such a system, a traffic junction formed by two interconnected signalized intersections. The first goal of the analysis was to reveal how the optimization of the signal program in a specific way affects the operation of the entire system in terms of throughput during peak periods. After that, the possibility of modelling the same traffic junction with roundabouts was also explored. Finally, the results for the total traffic throughput of the system during the peak periods were compared in case of the different model variants. The resulting comparison present the permeability variation in a well-structured way and could also provide a useful example for the field. LA - English DB - MTMT ER - TY - JOUR AU - Nagy, Antal AU - Kundrák, János TI - Roughness of Face-Milled Surface Topography in Directions Relative to the Feed Movement JF - MANUFACTURING TECHNOLOGY J2 - MANUFAC TECHN VL - 24 PY - 2024 IS - 2 SP - 1 EP - 15 PG - 15 SN - 1213-2489 DO - 10.21062/mft.2024.024 UR - https://m2.mtmt.hu/api/publication/34755555 ID - 34755555 LA - English DB - MTMT ER - TY - JOUR AU - OMLE, ISSA AU - Kovács, Endre TI - Evaluate Recent Numerical Methods for Long-Term Simulation to Study the Effect of Different Shapes of Thermal Bridges in Walls JF - ADVANCED ENGINEERING FORUM J2 - ADVANCED ENGINEERING FORUM PY - 2024 SP - 1 EP - 14 PG - 14 SN - 2234-9898 UR - https://m2.mtmt.hu/api/publication/34755554 ID - 34755554 LA - English DB - MTMT ER - TY - JOUR AU - Alktranee, Mohammed AU - Al-Yasiri, Qudama AU - Shehab, Mohammed AU - Bencs, Péter AU - Németh, Zoltán AU - Hernádi, Klára TI - Experimental and numerical study of a photovoltaic/thermal system cooled by metal oxide nanofluids JF - ALEXANDRIA ENGINEERING JOURNAL J2 - ALEX ENG J VL - 94 PY - 2024 SP - 55 EP - 67 PG - 13 SN - 1110-0168 DO - 10.1016/j.aej.2024.03.050 UR - https://m2.mtmt.hu/api/publication/34753277 ID - 34753277 LA - English DB - MTMT ER - TY - JOUR AU - Lone, Showkat Ahmad AU - Raizah, Zehba AU - Saeed, Anwar AU - Vadászné Bognár, Gabriella TI - Statistical computation for heat and mass transfers of water-based nanofluids containing Cu, Al2O3, and TiO2 nanoparticles over a curved surface JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 14 PY - 2024 IS - 1 SN - 2045-2322 DO - 10.1038/s41598-024-57532-x UR - https://m2.mtmt.hu/api/publication/34753107 ID - 34753107 AB - Nanofluid is a specially crafted fluid comprising a pure fluid with dispersed nanometer-sized particles. Incorporation these nanoparticles into pure fluid results in a fluid with improved thermal properties in comparison of pure fluid. The enhanced properties of nanofluids make them highly sought after, in diverse applications, consisting of coolant of devices, heat exchangers, and thermal solar systems. In this study hybrid nanofluid consisting of copper, alumina and titanium nanoparticles on a curved sheet has investigated with impact of chemical reactivity, magnetic field and Joule heating. The leading equations have converted to normal equations by using appropriate set of variables and has then evaluated by homotopy analysis method. The outcomes are shown through Figures and Tables and are discussed physically. It has revealed in this study that Cu-nanofluid flow has augmented velocity, temperature, and volume fraction distributions than those of Al 2 O 3 -nanofluid and TiO 2 -nanofluid. Also, the Cu-nanofluid flow has higher heat and mass transfer rates than those of Al 2 O 3 -nanofluid and TiO 2 -nanofluid. LA - English DB - MTMT ER - TY - THES AU - Göcs, László TI - Rendellenesség alapú behatolás érzékelő rendszerek gépi tanulási módszerrel történő tanítása PY - 2024 SP - 115 UR - https://m2.mtmt.hu/api/publication/34747185 ID - 34747185 LA - Hungarian DB - MTMT ER - TY - GEN AU - Benotsmane, Rabab TI - Exploring the Design and Development Challenges of Collaborative Robot Arms PY - 2024 UR - https://m2.mtmt.hu/api/publication/34747032 ID - 34747032 AB - In the age of Industry 4.0, collaborative robots, or "cobots," stand as a ground breaking innovation in industrial automation. Their recent rapid advancements have propelled modern manufacturing and production by offering a human-friendly approach to work. To maximize their potential, these systems demand state-of-the-art sensors integrated with cutting-edge AI and machine learning techniques, coupled with safety features ensuring secure operation in close proximity to human workers. Cobots have emerged as key contributors to heightened productivity and the creation of adaptable, collaboration-friendly work environments. In today's industrial landscape, they seamlessly integrate into diverse sectors alongside traditional robots, prompting the question: can we upgrade the intelligence and collaboration capabilities of the millions of existing traditional industrial robots? This presentation delves into the prospect of upgrading traditional industrial robots to collaborative robots (cobots). We delve into the fundamental prerequisites for cobot arm systems, emphasizing the essential safety features. Our exploration encompasses the incorporation of advanced sensors and AI/ML techniques, paving the way for a transformative upgrade in the capabilities of industrial robotics. LA - English DB - MTMT ER - TY - GEN AU - Benotsmane, Rabab TI - Integrated Approaches for Enhanced Robotic Arm Performance: Path Planning, Trajectory Optimization, Task Allocation, Collision Detection PY - 2024 UR - https://m2.mtmt.hu/api/publication/34747008 ID - 34747008 LA - English DB - MTMT ER -