TY - JOUR AU - Major, Zoltán AU - Németh, Attila AU - Jóvér, Vivien AU - Liegner, Nándor AU - Fischer, Szabolcs TI - Dynamic modeling possibilities of embedded rail structures JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG PY - 2025 SN - 1785-8860 UR - https://m2.mtmt.hu/api/publication/35188772 ID - 35188772 LA - English DB - MTMT ER - TY - JOUR AU - Juhász, Erika AU - Fischer, Szabolcs TI - Investigation of the modified Ballast Breakage Index for laboratory test series using the Proctor compactor machine JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG PY - 2025 SN - 1785-8860 UR - https://m2.mtmt.hu/api/publication/34818876 ID - 34818876 LA - English DB - MTMT ER - TY - JOUR AU - Brautigam, András AU - Szalai, Szabolcs AU - Légmán, Nikoletta AU - Fischer, Szabolcs TI - Laboratory investigation on seams between rails and hardened fine-grained as well as Hadfield steel plates prepared by manual arc welding JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG VL - 22 PY - 2025 SN - 1785-8860 UR - https://m2.mtmt.hu/api/publication/34777287 ID - 34777287 LA - English DB - MTMT ER - TY - CONF AU - Heinc, Emília AU - Bánhelyi, Balázs TI - Effective Heuristics for Accelerated Branch and Bound Solver of Process Network Synthesis Problems T2 - THE 14TH CONFERENCE OF PHD STUDENTS IN COMPUTER SCIENCE PB - Szegedi Tudományegyetem, Informatikai Intézet C1 - Szeged PY - 2024 SP - 36 EP - 38 PG - 3 UR - https://m2.mtmt.hu/api/publication/35295555 ID - 35295555 LA - English DB - MTMT ER - TY - GEN AU - Koteczki, Réka AU - Eisingerné Balassa, Boglárka AU - Csikor, Dániel TI - Optimizing Human Resources for Efficiency and Sustainability through Business Process Modelling with Large Language Models PY - 2024 UR - https://m2.mtmt.hu/api/publication/35261124 ID - 35261124 N1 - előadás LA - English DB - MTMT ER - TY - GEN AU - Pusztai, Zoltán TI - Examination of the Resistance Components of an Energy-Efficient Electric Vehicle PY - 2024 UR - https://m2.mtmt.hu/api/publication/35212324 ID - 35212324 LA - English DB - MTMT ER - TY - JOUR AU - Hollósi, János AU - Ballagi, Áron AU - Kovács, Gábor AU - Fischer, Szabolcs AU - Nagy, Viktor TI - Detection of Bus Driver Mobile Phone Usage Using Kolmogorov-Arnold Networks JF - COMPUTERS J2 - COMPUTERS VL - 13(9) PY - 2024 IS - 218 SP - 1 EP - 21 PG - 21 SN - 2073-431X DO - 10.3390/computers13090218 UR - https://m2.mtmt.hu/api/publication/35186737 ID - 35186737 AB - This research introduces a new approach for detecting mobile phone use by drivers, exploiting the capabilities of Kolmogorov-Arnold Networks (KAN) to improve road safety and comply with regulations prohibiting phone use while driving. To address the lack of available data for this specific task, a unique dataset was constructed consisting of images of bus drivers in two scenarios: driving without phone interaction and driving while on a phone call. This dataset provides the basis for the current research. Different KAN-based networks were developed for custom action recognition tailored to the nuanced task of identifying drivers holding phones. The system’s performance was evaluated against convolutional neural network-based solutions, and differences in accuracy and robustness were observed. The aim was to propose an appropriate solution for professional Driver Monitoring Systems (DMS) in research and development and to investigate the efficiency of KAN solutions for this specific sub-task. The implications of this work extend beyond enforcement, providing a foundational technology for automating monitoring and improving safety protocols in the commercial and public transport sectors. In conclusion, this study demonstrates the efficacy of KAN network layers in neural network designs for driver monitoring applications. LA - English DB - MTMT ER - TY - CHAP AU - Unger, Miklós AU - Horváth, Ernő AU - Pup, Dániel AU - Pozna, Claudiu Radu TI - Towards Robust LIDAR Lane Clustering for Autonomous Vehicle Perception in ROS 2 T2 - 2024 IEEE International Conference on Mobility, Operations, Services and Technologies (MOST) PB - Institute of Electrical and Electronics Engineers (IEEE) CY - Piscataway (NJ) SN - 9798350307733 PY - 2024 SP - 229 EP - 234 PG - 6 DO - 10.1109/MOST60774.2024.00031 UR - https://m2.mtmt.hu/api/publication/35178272 ID - 35178272 LA - English DB - MTMT ER - TY - JOUR AU - Enisz, Krisztián AU - Szalay, István AU - Horváth, Ernő TI - Localization robustness improvement for an autonomous race car using multiple extended Kalman filters JF - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING J2 - P I MECH ENG D-J AUT VL - 2024 PY - 2024 SN - 0954-4070 DO - 10.1177/09544070241266281 UR - https://m2.mtmt.hu/api/publication/35177068 ID - 35177068 LA - English DB - MTMT ER - TY - JOUR AU - Chalabi, Jafar AU - Morteza, Esmaeili AU - Gosztola, Dániel AU - Fischer, Szabolcs AU - Movahedi Rad, Majid TI - Effect of the Particle Size Distribution of the Ballast on the Lateral Resistance of Continuously Welded Rail Tracks JF - INFRASTRUCTURES J2 - INFRASTRUCTURES-BASE VL - 9 PY - 2024 IS - 8 PG - 18 SN - 2412-3811 DO - 10.3390/infrastructures9080129 UR - https://m2.mtmt.hu/api/publication/35152855 ID - 35152855 AB - While the effect of ballast degradation on lateral resistance is noteworthy, limited research has delved into the specific aspect of ballast breakage in this context. This study is dedicated to assessing the influence of breakage on sleeper lateral resistance. For simplicity, it is assumed that ballast breakage has already occurred. Accordingly, nine granularity variations finer than No. 24 were chosen for simulation, with No. 24 as the assumed initial particle size distribution. Initially, a DEM model was validated for this purpose using experimental outcomes. Subsequently, employing this model, the lateral resistance of different particle size distributions was examined for a 3.5 mm displacement. The track was replaced by a reinforced concrete sleeper in the models, and no rails or rail fasteners were considered. The sleeper had a simplified model with clumps, the type of which was the so-called B70 and was applied in Western Europe. The sleeper was taken into consideration as a rigid body. The crushed stone ballast was considered as spherical grains with the addition that they were divided into fractions (sieves) in weight proportions (based on the particle distribution curve) and randomly generated in the 3D model. The complete 3D model was a 4.84 × 0.6 × 0.57 m trapezoidal prism with the sleeper at the longitudinal axis centered and at the top of the model. Compaction was performed with gravity and slope walls, with the latter being deleted before running the simulation. During the simulation, the sleeper was moved horizontally parallel to its longitudinal axis and laterally up to 3.5 mm in static load in the compacted ballast. The study successfully established a relationship between lateral resistance and ballast breakage. The current study’s findings indicate that lateral resistance decreases as ballast breakage increases. Moreover, it was observed that the rate of lateral resistance decrease becomes zero when the ballast breakage index reaches 0.6. LA - English DB - MTMT ER -