Balázs Kósa, Hajnalka Juhász, Lilla Gyüre, Olivér Schmidt, Renáta Németh-Szigeti, Kinga Paczolai and Attila Béla Széll
Hungary has been the home of many peoples from the beginnings of its history. As a result, our accumulated heritage is made up of buildings which were built, used and formed by different peoples during their lifetimes. This study investigates the diversity of the built heritage, the architectural and social multiculturalism in the city centre of Pécs.
The larger part of Pécs’s downtown area – an area that still preserves the structure of the medieval city – is protected either by local or national regulations. Although the street structure within the limits of the city wall have not changed, the cityscape has undergone more transformations, since every architectural era has left its dominant mark in the buildings. In this study I will analyse one of the most important East-West axes of the downtown, and in more specific detail the Király Street with its historically important buildings. I will describe the history of its development, its past and present function, and the changes that this area has undergone up to the present day. In addition to the architectural aspects of these changes, transport, trade, and tourism also play an important role. In this study, I would like to draw attention to the currently vacant, incorrectly used properties and opportunities for their use in the future.
The opportunities offered by the smart city and the smart home to create livelier cities and homes in cities of increasing populations.  Meanwhile, there may be more problems which the average user does not yet think about. Focusing on these issues will be of utmost importance for information security and IT security, as the development of technology may not be able to keep up with a society such technologies are used in. On a theoretical and practical level, I examine an intelligent heating system for IT vulnerability, as well as some cases of attacks against IoT in recent years.
In this case study, the course and assessment of a work noise problem in a laboratory environment are described. Noise measurements are performed for the evaluation of workplace noise levels caused by the dominant sources at the site of the investigation. The results are evaluated according to the current Hungarian legislation, which is harmonized with the directives of the European Union. Based on the results noise protection interventions are shown to be required and proposals are described to solve the current situation.
The side relief faces of the monolithic involute gear hob are machined through relieving. The resulting surfaces are bevel helical surfaces in which the side cutting edges result from the intersection of these with the helical rake face. Theoretically, the gear hob is derived from an involute worm. Resharpening decreases the diameter of the hob, thus the edges became closer to the axis, and as a consequence they will be situated on a smaller worm than the original. The present paper analyses the deviation of the re-sharpened gear hob’s carrying worm from the theoretically perfect involute worm whose characteristic dimensions were adjusted considering the re-sharpened gear hob characteristic diameters. It was proven that the evolution of the errors is significantly different from that described in the literature. Thus, increasing the new gear hob diameters in comparison with the calculated dimensions is unnecessary, because it cannot reduce the error to half with this procedure. The mathematical model was built up accepting that the edges result from the intersection of an involute worm with a helical rake face and the side relief faces result from the rototranslation of the edges on a bevel helix leading curve dressed by the relieving parameter.
Marius Lucian Botoș, Ferdinánd-Zsongor Gobesz and Zsombor Kisfaludi-Bak
The laboratory assessment of the hydraulic characteristics of unsaturated soils usually requires expensive equipment and an extended time period. With lack of financial support, yet taking advantage of local knowledge and resources, the development of cheaper alternative equipment is presented in the present paper. The automated setup allows the assessment of the saturation degree of soil samples subjected to different suctions.
This paper presents the thermokinetic modeling of the gasification process performed on the acacia-tree under varying operating circumstances and different humidity levels. Gasification does not produce flue gas, but due to imperfect burning, synthesis gas appears which is rich in flammable components (CO2 and H2). The chemical structure of this gas depends on the components of the fuel and the humidity level, but is also greatly affected by the technological parameters, such as pressure and temperature, as well as the air-ratio. The study shows the change of chemical composition, fuel value and the reaction efficiency as a function of varying gasification temperature and pressure. Rising temperature results in improved efficiency, while higher pressure worsens reaction efficiency. However, at higher temperature intervals, the effect of the pressure is neglectable.
This study is the last one of a three-part series reviewing the history of Hungarian language technical terminology. In this article, we strive to present all the factors that have influenced the state of Hungarian technical language and terminology at a particular period of time during the past hundred years. Over a long period of time, the most important part in establishing and disseminating adequate Hungarian terms was played by standards, dictionaries and the publishing of technical literature. Since this situation has dramatically changed by now, after presenting the current state of affairs, we make suggestions on handling terminological problems emerging in the course of technical communication, the instruction of technical language or the translation of technical literature.
Archaeological publications connect the raw material used for the production of copper and bronze artifacts discovered during the excavations carried on in Szeklerland to the use of the chalcopyrite from the Bălan copper ore deposit. So far, this assumption has not been confirmed by concrete evidence. Men of the Bronze Age can’t possibly have had knowledge of the metallurgy of sulphide-type copper ores such as chalcopyrite. Applying investigations based on spectroscopy, the Bronze Age use of chalcopyrite from Bălan could be either confirmed or refuted, the new data throwing more light on the provenance of the bronze artifacts discovered in the Szeklerland.
Zoltán Forgó, Ferenc Tolvaly-Roșca and Judit Pásztor
The metering shaft of the drilling machine is driven from the impeller. The standard traditional gearbox, the Norton gearbox, provides a constant rotating motion between the impeller and the metering shaft. Manufacturers have started to replace this gearbox with an intermittent rotating movement. Using the stepless variable speed gearbox, the speed of the metering shaft and thus the seed rate is set steplessly. The aim of the thesis is the mathematical modeling of the intermittent rotating motion of the seed drill of a particular drilling machine, and the creation of a striping model.