@CONFERENCE{MTMT:34833815, title = {Introduction of space science in higher education: space science in BSc engineering}, url = {https://m2.mtmt.hu/api/publication/34833815}, author = {Takács, Szilárd László}, booktitle = {Proceedings of the 8th International Conference on Research, Technology and Education of Space}, unique-id = {34833815}, year = {2024}, pages = {37} } @article{MTMT:34824304, title = {Selection of engine oils with tribological examinations applicable to specially operated diesel engines}, url = {https://m2.mtmt.hu/api/publication/34824304}, author = {Kuti, Rajmund and Könczöl, F. and Csapó, L. and Papp, Csenge and Földi, László and Tóth, Álmos Dávid}, doi = {10.5937/fme2402335K}, journal-iso = {FME TRANS}, journal = {FME TRANSACTIONS}, volume = {52}, unique-id = {34824304}, issn = {1451-2092}, abstract = {In recent times, many specially engineered diesel engines built in the 1980s are still used in different areas, for which the suggested engine oils are no longer available. These engines are operated reliably in military combat vehicles, electricity generators, and tracked machinery, thus it is essential to examine what engine oils are suitable for their operating conditions and may be used as their engine oil. The aim of our research is to conduct the tribological examination of an oil sample taken from a V-6M type naturally aspirated Diesel engine and the oil prescribed by the manufacturer. After evaluating the results, we determine which type of oil is applicable in the engine to achieve safe operation and a long lifetime.}, year = {2024}, eissn = {2406-128X}, pages = {335-342}, orcid-numbers = {Kuti, Rajmund/0000-0001-7715-0814; Papp, Csenge/0000-0002-4950-2461; Földi, László/0000-0001-7575-7188} } @article{MTMT:34823927, title = {Possibilities for further development of the driver's seat in the case of a non-conventional seating positions}, url = {https://m2.mtmt.hu/api/publication/34823927}, author = {Porkoláb, László and Lakatos, István}, doi = {10.1016/j.heliyon.2024.e28909}, journal-iso = {HELIYON}, journal = {HELIYON}, volume = {10}, unique-id = {34823927}, year = {2024}, eissn = {2405-8440}, orcid-numbers = {Lakatos, István/0000-0002-3855-7379} } @article{MTMT:34795874, title = {Erdőtűz talajra gyakorolt hatásainak vizsgálata számítógépes szimulációval II. - Nyári tűz}, url = {https://m2.mtmt.hu/api/publication/34795874}, author = {Hajdu, Flóra and Beke, Dóra and Hajdu, Csaba and Környei, László and Kuti, Rajmund}, journal = {TŰZVÉDELEM}, volume = {2024}, unique-id = {34795874}, issn = {2939-8916}, year = {2024}, pages = {4-7}, orcid-numbers = {Hajdu, Csaba/0000-0002-1058-7525; Kuti, Rajmund/0000-0001-7715-0814} } @article{MTMT:34778880, title = {Verseny a műholdas piacon. zsúfoltság, viták és szűkülő erőforrások}, url = {https://m2.mtmt.hu/api/publication/34778880}, author = {Daczi, Diána and Vári, Péter and Bartóki-Gönczy, Balázs}, doi = {10.54200/kt.v4i1.79}, journal-iso = {KÖZIGAZGATÁSTUD}, journal = {KÖZIGAZGATÁSTUDOMÁNY}, volume = {4}, unique-id = {34778880}, abstract = {A műholdas megakonstellációk felbocsátása a műholdas pályák zsúfoltságával kapcsolatos újabb problémát okozott a műholdak megnövekedett száma miatt. Az ENSZ Űrügyi Hivatala szerint a Szputnyik-1 fellövése óta 17 263 objektumot bocsátottak fel a világűrbe, ebből 11 330 műhold keringett a Föld körül 2023 júniusában, amely 37,94%-os növekedést jelent 2022 januárjához képest. Hozzászoktunk az űrtávközlés újdonságaihoz, mivel ez a terület folyamatosan fejlődött, azonban a fejlődés üteme mostanra megváltozott: 1957–2020 között mindössze 10 308, az elmúlt 3 évben viszont 6 995 objektumot indítottak útnak, amely az összes objektum 40,29%-át jelenti. Ezen objektumok többsége kommunikációs műhold, amelyeket jellemzően hálózatokban, konstellációkban helyeznek el alacsony Föld körüli pályán (LEO). Az űrszemét problematikája, az űrforgalom-szabályozás hiánya, azaz a fenntarthatóság kérdése évek óta a tudományos és szakmai viták középpontjában áll, a rádiófrekvenciás zavarásról, azaz az interferenciáról keveset hallunk, miközben e probléma is veszélyezteti az emberi űrtevékenység fenntartható fejlődését. A LEO pályára állított konstellációk – hasonlóan az ismertebb geostacionárius műhold-konstellációk jellemzőihez – széles lefedettséggel és óriási műholdszámmal rendelkeznek. Ezen konstellációk megjelenése forradalmi változásokat hozott a globális űripar fejlődésében, ugyanakkor a műholdas távközlés globális piaca nem kezelhető a jelenlegi, az 1990-es évek elején meghatározott nemzetközi kereskedelmi együttműködés keretei között.}, keywords = {zsúfoltság; szabályozási kihívás; frekvencia-koordináció; műholdas rendszerek; Nemzetközi Távközlési Egyesület; megakonstelláció}, year = {2024}, eissn = {2786-1910}, pages = {1-15}, orcid-numbers = {Bartóki-Gönczy, Balázs/0000-0002-2147-901X} } @article{MTMT:34774556, title = {Predicting multi-span bridge maximum deflection: Numerical simulation and validation}, url = {https://m2.mtmt.hu/api/publication/34774556}, author = {Brinissat , Marame and Ray, Richard and Kuti, Rajmund}, doi = {10.1088/1757-899X/1304/1/012016}, journal-iso = {IOP CONF SER MATER SCI ENG}, journal = {IOP CONFERENCE SERIES: MATERIALS SCIENCE AND ENGINEERING}, volume = {1304}, unique-id = {34774556}, issn = {1757-8981}, abstract = {Deflection is one of the main parameters often required to reflect and monitor the overall health state of bridge structures. Several approaches have been developed to monitor deflection accurately and economically. This research proposes a theoretical method to estimate the maximum deflection of the longest section of a seven-span continuous bridge using stress data collected through strain gauges. Firstly, initial data were collected from field tests under various controlled loadings to obtain the maximum deflections and stresses. Then, the stress-deflection regression equations are derived to reconstruct deflection from estimated gauges. Finally, the maximum deflection values are compared with analytical results using finite element simulations to verify the method’s effectiveness.}, year = {2024}, eissn = {1757-899X}, orcid-numbers = {Kuti, Rajmund/0000-0001-7715-0814} } @article{MTMT:34765228, title = {Cherry Picking—Using Hybrid Learning Methods in HEI’s Mass Courses}, url = {https://m2.mtmt.hu/api/publication/34765228}, author = {Krankovits, Melinda and Kallós, Gábor}, doi = {10.9743/JEO.2024.21.2.20}, journal-iso = {Journal of Educators Online}, journal = {Journal of Educators Online}, volume = {21}, unique-id = {34765228}, issn = {1547-500X}, year = {2024}, pages = {2024.21.2.20} } @article{MTMT:34762087, title = {A kvadkopter szabályozási módjai}, url = {https://m2.mtmt.hu/api/publication/34762087}, author = {Kiss, Barnabás and Ballagi, Áron and Kuczmann, Miklós}, journal-iso = {ELEKTROTECHNIKA}, journal = {ELEKTROTECHNIKA}, volume = {2024/1-2}, unique-id = {34762087}, issn = {0367-0708}, year = {2024}, pages = {8-12} } @article{MTMT:34758553, title = {Brake Disc Deformation Detection Using Intuitive Feature Extraction and Machine Learning}, url = {https://m2.mtmt.hu/api/publication/34758553}, author = {Dózsa, Tamás and Őri, P and Szabari, M and Simonyi, Ernő and Soumelidis, Alexandros and Lakatos, István}, doi = {10.3390/machines12040214}, journal-iso = {MACHINES}, journal = {MACHINES}, volume = {12}, unique-id = {34758553}, abstract = {In this work we propose proof-of-concept methods to detect malfunctions of the braking system in passenger vehicles. In particular, we investigate the problem of detecting deformations of the brake disc based on data recorded by acceleration sensors mounted on the suspension of the vehicle. Our core hypothesis is that these signals contain vibrations caused by brake disc deformation. Since faults of this kind are typically monitored by the driver of the vehicle, the development of automatic fault-detection systems becomes more important with the rise of autonomous driving. In addition, the new brake boosters separate the brake pedal from the hydraulic system which results in less significant effects on the brake pedal force. Our paper offers two important contributions. Firstly, we provide a detailed description of our novel measurement scheme, the type and placement of the used sensors, signal acquisition and data characteristics. Then, in the second part of our paper we detail mathematically justified signal representations and different algorithms to distinguish between deformed and normal brake discs. For the proper understanding of the phenomenon, different brake discs were used with measured runout values. Since, in addition to brake disc deformation, the vibrations recorded by our accelerometers are nonlinearly dependent on a number of factors (such as the velocity, suspension, tire pressure, etc.), data-driven models are considered. Through experiments, we show that the proposed methods can be used to recognize faults in the braking system caused by brake disc deformation.}, year = {2024}, eissn = {2075-1702}, orcid-numbers = {Őri, P/0000-0002-4706-6432; Soumelidis, Alexandros/0000-0002-0067-7746; Lakatos, István/0000-0002-3855-7379} } @article{MTMT:34747755, title = {Benchmarking methodology for IPv4aaS technologies: Comparison of the scalability of the Jool implementation of 464XLAT and MAP-T}, url = {https://m2.mtmt.hu/api/publication/34747755}, author = {Lencse, Gábor and Bazsó, Ádám}, doi = {10.1016/j.comcom.2024.03.007}, journal-iso = {COMPUT COMMUN}, journal = {COMPUTER COMMUNICATIONS}, volume = {219}, unique-id = {34747755}, issn = {0140-3664}, year = {2024}, eissn = {1873-703X}, pages = {243-258}, orcid-numbers = {Lencse, Gábor/0000-0001-5552-3237; Bazsó, Ádám/0000-0001-8871-9623} }