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Tétel Szabadon hozzáférhető 3X3-as kosárlabda versenyek Debrecenben(2018-12-10) Pfau, Christa; Kalán, János; Bács, Zoltán; Müller, Anetta; Bácsné Bába, ÉvaFaster attacks, spin speed, increased adrenaline levels, vehement play. This is all about the 3X3 basketball. In Debrecen, the first 3X3 basketball matches were held in 2015, most of them did not even think that the sport would be popular in Hungary as well. Practically, from the start of the first minute, the games were played with great success. Following the successful settlement, the International Basketball Association immediately offered a 3-year contract to Debrecen. The purpose of our research was to examine the 3X3 basketball tournaments in Debrecen, which was analyzed using a questionnaire and an in-depth interview. 69% of the respondents participated in the 2016 and 2017 events, but only 37% attended the 3X3 basketball tournaments that were held for the first time in 2015. It can be stated that this trend is growing and the event is gaining popularity nationwide. Sponsors and sponsors covered every issue of the event so the event was free of charge over the years. 72% of fillers, however, are willing to spend money on a possible entry fee. In terms of revenue growth, the introduction of admission fees is unlikely to reduce interest. Up to 1200 seats have been filled up for the event every year. Therefore, it is not surprising that a lot of people would like to enjoy a higher auditorium with more space. The introduction of 4-point boundaries (3 points) for 3X3 matches would be a great opportunity to try the "little brother" of basketball in the 4-point so that it can be introduced in traditional basketball. Hungary became the pioneer of the sport due to the results of the Hungarian national team and the successful organization of sporting events.Tétel Szabadon hozzáférhető 9. konzolgenerációk válsága-fókuszban a Playstation 5 és az Xbox Series X(2021-09-27) Szabados, György Norbert; Bácsné Bába, Éva; Fenyves, Veronika; Bács, Zoltán; Pfau, Christa; Szabados, Krisztián; Ráthonyi, GergelyBy the end of the past centrury, specific computers optimized for gaming, that is meeting the needs of the computer gamers, the so-called game consoles were introduced to the market. At the end of the last year, after waiting for so long, new types of the 9 th generation consoles came into the market, produced by the Microsoft and the Sony. Ovation of this appearance is familiar and usual in the profession, which soon became exchanged by the space of dissatisfaction, since now, after the events of the past months we can declare that gaming on both platforms suffers from serious difficulties. This study, the methodological base of which is composed by case study, secondary analysis of available data, intends to highlight the facts which led to this situation, whether it is a temporary or a permanent situation, and how the market and the gaming society react to it. Results show that it does not seems to be a temporary phenomenon, and as a result of complex problems market anomalies have appeared, which considerably influences our relationship to the market of the consoles.Tétel Szabadon hozzáférhető Accuracy Analysis of Two Parallel Manipulators(2019-03-03) Hajdu, Sándor; Bodnár, DávidThe aim of the study is to analyse and visualize the accuracy of two parallel manipulators. The kinematics are calculated using vectors and the Newton method. The accuracy is calculated based on the actuator errors, visualization is done with color shading. Calculations was done using MATLABTétel Szabadon hozzáférhető Adaptability of Powdered Activated Carbon Production from Ground Catering Waste Pyrolysis Coke(2019-12-12) Nagy, Gábor; Simon, Andrea; Géber, Róbert; Rácz, ÁdámThree mixture of catering waste was pyrolyzed at 650, 725 and 900 °C and the solid residue (coke) was examined for powdered activated carbon production. For this, the carbon content, iodine number, particle size distribution and scanning electron microscopic images were analysed. Based on the carbon content, these cokes are suitable for activated carbon production, which were 60-85 wt.% (depending on the base material and pyrolysis temperature). The studied cokes showed slightly porous structure with smooth surfaces. Because of this, the iodine number was mostly small (13-30). Based on the grinding experiments, 10 minutes of grinding was found to be optimal. After this grinding time, the reached iodine number of powdered activated carbon was 350-610.Tétel Szabadon hozzáférhető adatsor statisztikai és analitikus elemzése(2019-12-12) Kézi, CsabaIn a concrete year, at the begining of the month, a company changed the unit price of the notebooks. The company wrote down the demand and the supply. We analyse the data series which the company described.Tétel Szabadon hozzáférhető Additív gyártástechnológia alkalmazása szélcsatornás szimulációkhoz(2022-12-11) Pálfi, Tamás; Ficzere, PéterThe current economical situation requires aircraft operators to start organizing their activity in the direction of carbon neutrality using innovative solutions. The goal of present study is to desing a brand new wingtip device using 3D printing which helps reducing aerodynamical drag, leading to fuel efficiency and less carbon emission with its innovative shape.Tétel Szabadon hozzáférhető Additív gyártástechnológiával előállított hőálló PLA anyag szilárdsági vizsgálata(2020-12-10) Ficzere, Péter; Lukács, Norbert LászlóIn recent years, additive manufacturing technologies have been increasingly used in both custom and small-series production. In such cases, the component must remain functional under realistic conditions.. This means that there must also has a load‑bearing capacity. In many cases, materials are already suitable for strength. However, in many cases (machine parts, outdoor use) the models need to operate reliably at higher temperatures. This seems to be solved by the most widespread additive manufacturing technology (FDM), with a new heat-resistant material, HT PLA. In many cases, the use of cooling is essential during manufacture, especially for parts with high overhangs where hardening of the material is required as soon as possible to achieve the correct surface quality. In this paper, we investigated the effect of cooling applied during manufacturing on the mechanical strengthTétel Szabadon hozzáférhető agrár-élelmiszer gazdaság üzleti kapcsolataiban szereplő információs és kommunikációs technológiák (IKT) alkalmazásának vizsgálata(2018-09-30) Boros-Papp, Sándor; Várallyai, LászlóSmall and medium-sized enterprises are the engines of Europe's economy. This is demonstrated by the European Small Enterprises Charta, adopted in 2000, and by the fact that this sector employs more than 90 million people. Appropriate information and communication technology is essential to maintain their ability to function effectively and competitively. They need to know how to use these technologies for their smoot growth in productivity. The purpose of our study is to assess the regional ICT penetration of the Hungarian SME sector and compare this to that of the EU Member States.Tétel Szabadon hozzáférhető Akkumulátoros autó életciklusának ökomérlege(2019-12-12) Anisits , FerencThe economic and ecological assessment of propulsions for mobil applications is based on the analysis oft he entire chain of energy transformation. In this regard, the ecological assessment oft he automobile is complemented by emissions created during its production and ist recycling. The following paper aims at promoting the understandig oft he underlying subject matter and to make the reader aware of relevant aspects that must be looked for in similar assessments. Understanding the discussed contex makes it possible to objectively asses the contribution of BEVs (battery electric vehicles) to the enviroment. The assessment provides hints thet help discover problem areas and assist in deducting goals and measures fort he strategy of emobility.Tétel Szabadon hozzáférhető Aktív hűtés hatásainak vizsgálata 3D nyomtatás esetén(2022-10-14) Ficzere, Péter3D printing is an increasingly widespread manufacturing process. With the development of machines and materials, the technology is becoming more accessible and easier to use. However, the technology's specificities mean that it requires knowledge of manufacturing technology. In some cases, it is necessary to solidify the freshly deposited layers as soon as possible in the event of large overhangs. This can be achieved by active cooling, which in turn can affect the material properties of the part. This research investigates the effects of active cooling during production.Tétel Szabadon hozzáférhető Aktuális kihívások a közúti járművek CO2-kibocsátására vonatkozó szabályozások területén(2020-04-14) Kocsis, Dénes; Bellér, Gábor; T. Kiss, Judit; Árpád , IstvánToday, as part of the fight against climate change, regulations on greenhouse gas emissions are gaining significantly higher attention. Our work focuses on the European Union legislation on carbon dioxide emissions from road vehicles, with special emphasis on the target values. Current changes in CO2 measurement methods, as important issues of the regulations, are also reviewed within this article.Tétel Szabadon hozzáférhető Algoritmizálás játékosan(2018-12-10) Vámosi, AttilaIn the “Extending the Technical Researcher Capacity, Developing Research Services and Building a Knowledge Square in Engineering Education” sub-program of the EFOP-3.6.1-16-2016-00022 "Debrecen Venture Catapult Program" project a research group on engineering and innovation skills was founded. This team undertook to develop skills development workshops for high school students in connection with mathematics, physics, descriptive geometry and informatics topics. In this paper the "Algorithmization in playful way" workshop will be presented, where we develop the student's algorithmic skills by playing computer games.Tétel Szabadon hozzáférhető Alkalmazásorientált matematikaoktatás a DE Műszaki Karán(2017-06-19) Kézi, Csaba; Nagyné Kondor, Rita; Szíki, Gusztáv ÁronAt the Department of Basic Technical Studies, Faculty of Engineering, University of Debrecen we have been dealing with the methodological reforming of mathematics education for more than ten years now. The recently published course book “Mathematical Tools in Engineering Applications” is the result of this long term creative work. The book presents the applications of the most important mathematical tools (vectors, matrices, linear functions, complex numbers, differential and integration calculus) in the different fields of engineering, natural sciences and economics. The aim of the authors with the recent publication is the presentation and popularization of the above book together with the educational and methodological trend it represents.Tétel Szabadon hozzáférhető Alkalmazott matematikai feladatok egy középiskolásoknak tartott foglalkozáson(2020-04-14) Kézi, CsabaIn the frame of the project EFOP-3.6.1-16-2016-00022 „Debrecen Venture Catapult Program" on may, 2019, I maked a test and it was completed by a secondary grammar school students in Mátészalka. In this lesson there were many exercises that showcase the different applications of mathematics.Tétel Szabadon hozzáférhető Általános iskolás tanulók és egyetemi hallgatók fogalomképzetei a függvényről(2017-06-19) Szanyi, GyöngyiThe concept of function is fundamental importance to the mathematics. Since the most mathematical concept is not acquired in one step [13], thus we have to take a long journey for developing of the function concept. One of the aim of this process to develop an effective concept image which have an important role in problem solution. The students decides on the basis of a concept image whether a given mathematical object is an example or nonexample of the concept. (Vinner & Dreyfus, 1989). In this paper we are looking for the answer of the following question: what are the concept image of the function concept formed of the students by the end of the primary school (8th grade) and the first year engineering university students?Tétel Szabadon hozzáférhető Alumíniumolvasztási maradék salakok sótartalmának hatékony eltávolítása(2019-12-12) Illés, István; Zakiyya, Hanna; Kékesi, TamásA residual dross of high quantity and high salt content arises from the hot (thermo-mechanical) treatment of the primary dross generated by the production of aluminium alloys from scrap. It contains a relatively low concentration of metal (5 – 10 %) but a high amount (30 - %) of chloride salts and some other components beside the oxide matrix. Due to the components dissolved in or reacted with water, this industrial residue - arising in thousands of tons also in Hungary – qualifies as hazardous and causes a real burden to the environment. According to the laboratory experiments aimed at an economical technology, the chlorides are dissolved within a few minutes when a liquid/solid ratio of 1:1 cm3/g (water volume:sample mass) is assured with an intensity of the horizontal shaking to prevent sedimentation. However, the filling ratio of the vessel also appears to have an effect. An implementation of relatively low cost would allow the recycling of the salt and the application of the final residue for alternative purposes.Tétel Szabadon hozzáférhető Amatőr és hobbi e-sportolók fizikai aktivitásának vizsgálata(2022-04-08) Sánta, JánosWith the spread of computers and the Internet, e-sports became a fast and dynamic growing sector with a significant market and economic potential. Its importance is demonstrated by the fact that its growth is now outstripping some traditional sports or other industries. E-sports users are sedentary in front of a computer during both competition and training, so their health is determined by the amount of physical activity they do when they are not in front of a computer. The primary aim of this research is to investigate the physical activity of e-sports users at different levels. In addition to this, I considered it important to investigate what games the players I interviewed compete in, how much time they spend playing and how they improve their skills. I conducted an online questionnaire survey in the University Electronic Games (UEG) online tournaments organised by the University of Debrecen. The participants in the survey fully met my criteria, as most of them were amateur or hobby e-sports players, so I obtained relevant data from their answers. Based on the participants' responses, it can generally be said that they engage in health-enhancing physical activity. However, it should be remembered that not only the rise in popularity of e-sports, but also the increasing digitalisation of society is contributing to the rise in sedentary lifestyles. In the future, it would be important to change the way gamers exercise, which until now has been predominantly to develop their digital video game skills. Physical activity and other health-related behaviours need to be integrated into the training routines of gamers - e-sports players, so that playing sports could become a natural pastime alongside e-sports.Tétel Szabadon hozzáférhető Amit a létesítésről munkavédelmi szempontból tudni érdemes(2019-06-06) Bujnóczki, Tibor; Zákányi Mészáros, RenátaUnder establishment, we mean the process that results in the creation of a new unit (eg factory, plant, office, etc.), a workplace or an existing one what will be renewed, expanded or restructured, or installed; installed on a machine, plant, appliance, whether or not for productive or non-productive purposes. It is generally true that the design, construction, use and subsequent operation of workplaces, facilities, technology, materials, energy, personal protective equipment; production, distribution, import, transportation, movement, use and use of workplaces; in the absence of these, the requirements of the scientific-technical standard can be expected. An employer, operator, and service provider must adapt to market conditions. Accordingly, it should monitor the expectations of customers, business partners, market changes, trends to adapt to expectations, and therefore constantly develop their products, services, produce reliable quality, ensure that quality meets the market expectations providing personal and material conditions to ensure that employees can effectively and safely meet market expectations. The recognized business perception of the employer is to accomplish the above, the objectives to be achieved must be formulated, priority should be given to the potential risks (with particular regard to occupational safety risks) to be measured, measures to be taken to ensure effectiveness, short-, medium- and long-term planning, investment.Tétel Szabadon hozzáférhető Analysing the Conditions of SMEs Regarding Quality Assurance in Hungary and the European Union(2022-04-08) Popovicsné Szilágyi, Zita; Menyhárt, JózsefNowadays, small and medium sized enterprises (SME) have a relatively large task and expectation caused by the appearing of populated large foreign-owned enterprises in our country. In order that they will be able to cooperate with them and be able to join and integrate into the value chain they supply they must meet the high quality of standards. Obtaining then preserving quality certificates is essential for this. It can be fulfilled exclusively with thorough screening and problem identification. This situation is exacerbated continuously by globalization in which each sector is involved. It means that they must remain competitive globally. Although in our country most of the small and medium sized enterprises bears the specific characteristics of family businesses innovation may not be avoided if they intend to stay competitive. To fulfil this quality assurance is one of its integral part.Tétel Szabadon hozzáférhető Analysis of a Special, 3D Metal-Printed HPDC Tool Material(2020-04-15) Kovács, Sándor Endre; Varga, László; Szentes, ZsoltHigh Pressure Die Casting (HPDC) is still the most productive metal-casting method of our time, however the more demanding are the industrial expectations, the more challenging it becomes to ensure the creation of the difficult cavity geometries and the thermal balance of the die-cast tool. New perspective is required, thus we can utilize high heat-conductivity tool steels and additive manufacturing technology.