@article{MTMT:34863198, title = {Cognitive Classifier of Hand Gesture Images for Automated Sign Language Recognition: Soft Robot Assistance Based on Neutrosophic Markov Chain Paradigm}, url = {https://m2.mtmt.hu/api/publication/34863198}, author = {Al-Saidi, Muslem and Ballagi, Áron and Hassen, Oday Ali and Saad, Saad M.}, doi = {10.3390/computers13040106}, journal-iso = {COMPUTERS}, journal = {COMPUTERS}, volume = {13}, unique-id = {34863198}, abstract = {In recent years, Sign Language Recognition (SLR) has become an additional topic of discussion in the human–computer interface (HCI) field. The most significant difficulty confronting SLR recognition is finding algorithms that will scale effectively with a growing vocabulary size and a limited supply of training data for signer-independent applications. Due to its sensitivity to shape information, automated SLR based on hidden Markov models (HMMs) cannot characterize the confusing distributions of the observations in gesture features with sufficiently precise parameters. In order to simulate uncertainty in hypothesis spaces, many scholars provide an extension of the HMMs, utilizing higher-order fuzzy sets to generate interval-type-2 fuzzy HMMs. This expansion is helpful because it brings the uncertainty and fuzziness of conventional HMM mapping under control. The neutrosophic sets are used in this work to deal with indeterminacy in a practical SLR setting. Existing interval-type-2 fuzzy HMMs cannot consider uncertain information that includes indeterminacy. However, the neutrosophic hidden Markov model successfully identifies the best route between states when there is vagueness. This expansion is helpful because it brings the uncertainty and fuzziness of conventional HMM mapping under control. The neutrosophic three membership functions (truth, indeterminate, and falsity grades) provide more layers of autonomy for assessing HMM’s uncertainty. This approach could be helpful for an extensive vocabulary and hence seeks to solve the scalability issue. In addition, it may function independently of the signer, without needing data gloves or any other input devices. The experimental results demonstrate that the neutrosophic HMM is nearly as computationally difficult as the fuzzy HMM but has a similar performance and is more robust to gesture variations.}, year = {2024}, eissn = {2073-431X}, orcid-numbers = {Al-Saidi, Muslem/0000-0002-9613-9087; Saad, Saad M./0009-0006-1829-4168} } @article{MTMT:34855160, title = {Expert Twin: Integrating Fuzzy Logic for Adaptive Decision-Making in Industry 4.0. Development and Validation of a Smart Digital Twin Framework}, url = {https://m2.mtmt.hu/api/publication/34855160}, author = {Monek, Gergő Dávid and Fischer, Szabolcs}, journal-iso = {DECIS MAK APPL MANAG ENG}, journal = {DECISION MAKING: APPLICATIONS IN MANAGEMENT AND ENGINEERING}, unique-id = {34855160}, issn = {2560-6018}, year = {2024}, eissn = {2620-0104}, orcid-numbers = {Fischer, Szabolcs/0000-0001-7298-9960} } @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.}, keywords = {Engine oil; internal combustion diesel engine; tribological examination}, 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} }