TY - JOUR AU - Hajdu, Flóra AU - Hajdu, Csaba AU - Környei, László AU - Beke, Dóra AU - Kuti, Rajmund TI - Comparison of different geometry trees in fire simulation JF - POLLACK PERIODICA: AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES J2 - POLLACK PERIODICA VL - 2024 PY - 2024 IS - 2 SP - 1 SN - 1788-1994 DO - 10.1556/606.2024.01022 UR - https://m2.mtmt.hu/api/publication/35158535 ID - 35158535 AB - Wildfire simulations can help to better understand the dynamics and effects of forest fires. The basis of wildfire simulation is the tree-burning simulation. In this paper, the fire simulation of 7 different geometry Hungarian trees in the case of arson is presented. It was observed that the trees were burned down fast. The maximum mass loss rate and maximum heat release rate were larger as the tree was larger. The largest intensity fire could be observed in the case of the smallest tree. The maximum temperature was higher in the case of a large crown diameter. The maximum aerosol reached high pollutant concentrations. In the case of large crown height, the maximum CO 2 concentration was higher. The results presented in this paper can be the basis of the following forest fire simulations. LA - English DB - MTMT ER - TY - CONF AU - Rampasek, Éva AU - Hajdu, Csaba AU - Tüű-Szabó, Boldizsár AU - Tempfli, Károly AU - Környei, László ED - Pőr, Csilla ED - Szabó-Soós, Adrienn ED - Szabó, Péter TI - Adathalmaz készítés sárga magyar tyúkállományok mesterséges intelligencia alapú videóelemzéséhez T2 - LXV. Georgikon Napok Tudományos Konferencia [65th Georgikon Days Scientific Conference] Keszthely, 2024. május 17–18. PB - Magyar Agrár- és Élettudományi Egyetem, Georgikon Campus C1 - Keszthely SN - 9786156338105 PY - 2024 SP - 138 EP - 140 PG - 3 UR - https://m2.mtmt.hu/api/publication/35073460 ID - 35073460 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hajdu, Flóra AU - Beke, Dóra AU - Hajdu, Csaba AU - Környei, László AU - Kuti, Rajmund TI - Erdőtűz talajra gyakorolt hatásainak vizsgálata számítógépes szimulációval III. - Tavaszi és téli tűz JF - TŰZVÉDELEM VL - 31 PY - 2024 IS - 3 SP - 6 EP - 10 PG - 5 SN - 2939-8916 UR - https://m2.mtmt.hu/api/publication/34902456 ID - 34902456 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hajdu, Flóra AU - Beke, Dóra AU - Hajdu, Csaba AU - Környei, László AU - Kuti, Rajmund TI - Erdőtűz talajra gyakorolt hatásainak vizsgálata számítógépes szimulációval II. - Nyári tűz JF - TŰZVÉDELEM VL - 2024 PY - 2024 IS - 2 SP - 4 EP - 7 PG - 4 SN - 2939-8916 UR - https://m2.mtmt.hu/api/publication/34795874 ID - 34795874 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hajdu, Flóra AU - Beke, Dóra AU - Hajdu, Csaba AU - Környei, László AU - Kuti, Rajmund TI - Az erdőtűz talajra gyakorolt hatásainak vizsgálata számítógépes szimulációval I. - Modellek vizsgálata JF - TŰZVÉDELEM VL - 31 PY - 2024 IS - 1 SP - 5 EP - 8 PG - 4 SN - 2939-8916 UR - https://m2.mtmt.hu/api/publication/34568811 ID - 34568811 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hajdu, Csaba AU - Csapó, Ádám Balázs TI - Analysis of Human-Robot Interactions as a Sustainability Factor JF - CHEMICAL ENGINEERING TRANSACTIONS J2 - CHEM ENG TR VL - 107 PY - 2023 SP - 85 EP - 90 PG - 6 SN - 1974-9791 DO - 10.3303/CET23107015 UR - https://m2.mtmt.hu/api/publication/34477896 ID - 34477896 LA - English DB - MTMT ER - TY - JOUR AU - Szilágyi, Zoltán AU - Hajdu, Csaba AU - Csapó, Ádám Balázs AU - Károly, Széll AU - Galambos, Péter TI - Sustainability Indicators in Industrial Robotic Systems JF - CHEMICAL ENGINEERING TRANSACTIONS J2 - CHEM ENG TR VL - 107 PY - 2023 SP - 79 EP - 84 PG - 6 SN - 1974-9791 DO - 10.3303/CET23107014 UR - https://m2.mtmt.hu/api/publication/34477861 ID - 34477861 LA - English DB - MTMT ER - TY - JOUR AU - Hajdu, Flóra AU - Hajdu, Csaba AU - Beke, Dóra AU - Környei, László AU - Kuti, Rajmund TI - Numerical Examination of a Forest Area Fire JF - CHEMICAL ENGINEERING TRANSACTIONS J2 - CHEM ENG TR VL - 107 PY - 2023 SP - 61 EP - 66 PG - 6 SN - 1974-9791 DO - 10.3303/CET23107011 UR - https://m2.mtmt.hu/api/publication/34477845 ID - 34477845 LA - English DB - MTMT ER - TY - JOUR AU - Hajdu, Csaba AU - Lakatos, István TI - Calibration Measurements and Computational Models of Sensors Used in Autonomous Vehicles JF - PERIODICA POLYTECHNICA TRANSPORTATION ENGINEERING J2 - PERIOD POLYTECH TRANSP ENG VL - 51 PY - 2023 IS - 3 SP - 230 EP - 241 PG - 12 SN - 0303-7800 DO - 10.3311/PPtr.18453 UR - https://m2.mtmt.hu/api/publication/33800813 ID - 33800813 AB - An increasing number of vehicles are equipped with cameras. As perception sensors, they scan the surrounding area and supply the Advanced Driver Assistance Systems (ADAS) for building up an environmental model through the use of computer vision techniques. While they perform well under good weather conditions their efficiency is reduced by adverse environmental influences such as rain, fog and occlusion through dirt. As a consequence, the vision based ADAS obtains poor quality information, and the model also becomes faulty. This paper deals with methods to estimate information quality of cameras in order to warn the assistance system of possible wrong working conditions. In particular, situations of contamination or occlusion of the windshield or camera lens, as well as foggy weather are taken into account in this paper. In the issue of occlusion total, fractional and transparent effectuations have to be recognized and distinguished. Therefore, this paper proposes an approach based on edge analysis of consecutive frames and presents initial experimental results of the implementation. In the field of Fog Detection a method based on the Logarithmic Image Processing Model is described and the results are shown. LA - English DB - MTMT ER - TY - JOUR AU - Kuti, Rajmund AU - Zólyomi, Géza AU - László, Gabriella AU - Hajdu, Csaba AU - Környei, László AU - Hajdu, Flóra TI - Examination of effects of indoor fires on building structures and people JF - HELIYON J2 - HELIYON VL - 9 PY - 2023 IS - 1 SN - 2405-8440 DO - 10.1016/j.heliyon.2022.e12720 UR - https://m2.mtmt.hu/api/publication/33535271 ID - 33535271 LA - English DB - MTMT ER -