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Design and Implementation of BHN Testing Equipment To Measure Remaining Stress Of Wheelset Parts (Tie Rod and Stabilizer Bar)
337-341Views:194Nowadays in the automotive industry both production and service, requires accurate lifetime calculations. Today we have big amount of theoretical background and nowadays the importancy of technical and industrial databases become more and more important. By materials scientific and fracture mechanics aspects are well covered, but the remaining stresses which are present in every step of production, we can not clearly identify the origin of them. There are different paralell methods to mesure them, but the application of different methods are depending on the engineers, and their expreiences at the company. This part of the analysis is not standardised yet, so there are differences even in the same company.
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Modern Applications of Aluminium Foams
14-21Views:339The implementation of aluminium alloy foam has more and more attention. Application of closed cell aluminium foam has made an impact in automobile and aerospace applications where crash energy absorption, vibration and weight reduction are obligatory [1,2,3]. The aluminium alloy foam is an advanced lightweight material providing high strength and stiffness at relatively low density. The technological use of aluminium alloy foam is difficult with the currently available technologies. In the case of open cell aluminium foams, the most common research areas for application are heat exchanger components, filters and sound damping elements [3]. The manuscript focuses on the manufacturing techniques of the aluminium alloy foams according to the application areas. First step is the investigation of the requirements for the application: what are the loads and the circumstances and why can we use aluminium foams. Second step is the knowledge of the producing methods of the foam or the component. And the last step is the investigation of the possible testing methods.
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Examination of macro- and micro elements in the artificial bathwater samples
61-69Views:154During our research, micro- and macro element content of synthetically produced bathwater was examined. Previous studies, which were conducted at the Department of Environmental Engineering at the Faculty of Engineering, University of Debrecen, proved that the quality of domestic greywater is greatly varied. This diversity can also be observed in the case of greywaters. The examination of bathwater samples covered the contentanalysis of Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sr, Zn, Ca, K, Mg, Na, Li elements with the application of MP-AES method. The analysis of greywater’s micro and macro content is essential part in the control of irrigation systems, flushing as well as car washing, because its heavy metal content can have a significant effect on the environment. In this study, we would like to present the concentration values of micro and macro elements of the examined greywater samples. Furthermore, we would like to make a comparison among our result, previously examined greywater samples and drinking water samples, too.
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Implementing Lean Leadership in Garment Industries
348-354Views:392Garment industries are one of the most competitive industries nowadays, that was the main reason why implementing lean tools became conventional between big brands, although, lean tools alone are not enough for successful lean implementation in any organization, that’s why creating lean leaders and defining what lean leadership exactly means became a necessity, in this study, we will try to draw a path in which garment manufacturers can pursue to become lean organizations taking a (Manufacturer for NIKE) as an example for the study as a heavy lean implementer closing by suggesting a 9 steps method that lean can be implemented successfully in garment industry factory.
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The Role of Logistics Management in Public Services – Research Plan
33-43Views:242Public services and logistics are generally treated as different fields, but the tools of logistics management with the help of the Unified Services Theory can be used for the benefit of the public services. The aim of this theoretical paper is to generally introduce my topic and relevance of the research on which my PhD thesis will be based in the future. The expectations in the advanced, globalized world are pushing governments to find new methods to fulfil the needs of the citizens while keeping up or even increase efficiency and effectiveness. I believe that from a certain viewpoint the public administration system can be considered as a large scale supply network, and I am particularly interested in how we could apply logistical methods in public services to increase efficiency and effectiveness while simultaneously increase customer satisfaction. In this particular paper I would like to present how I see the connections between the concept of New Public management and the Unified Services Theory. I would like to show the similarities between them and how they could complete each other in order to serve as a background for later logistics related approaches and researches within the domain of public services.
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Examining Used and Sportswear Supply Chain Strategy and Indicators
86-98Views:239The following study presents the supply chain strategy of a second-hand and sportswear company in Hungary. The study discusses the main tasks of supply logistics, the level of logistics service, the main determining elements of the level of logistics service, and the measurement of customer satisfaction. From the first step of the process, we can fully follow the processes until the last activity. We can learn in detail about the sub-processes, such as: types of clothing collection, sourcing, warehousing, selection, disassembly, processing, receipt of goods and sales. The aim of the study is to make the processes more transparent for everyone.
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The green methanol - playing a role in sustainable energy management
249-258Views:162Global energy demand is constantly increasing, so the energy sources we use, and the efficiency of energy use are of paramount importance for the future of humanity. Methanol can play a key role in the sustainable use of natural resources, in the efficient and smooth transition from a fossil oil-based energy system as well as in reducing greenhouse gas emissions. Long-term thinking will result in an increase in the use of renewable energy sources, which will favour the spread of green methanol technology and thus the use of a carbon-neutral fuel. The raw materials for the production of green methanol may include municipal solid waste, agricultural waste, renewable hydrogen and carbon dioxide and the methanol has many uses, both as fuel and chemical feedstock. It also provides an opportunity to chemically store excess renewable energy from intermittent sources, thereby reducing dependence on fossil fuels. The price of electricity used for electrolysis is the main determinant of the economical production of green methanol, so the reduction of the cost of solar and wind energy greatly contributes to the competitiveness of carbon-based production.
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Forces Attributed to Dark Matter May Originate from Entangled Particles as Seen in the Shape Of Galaxies Formed by Grbs
23-32Views:118Recently, it has been suggested that entangled particles may be connected by a wormhole. If that is right, what is the distance between them we have to take into account when applying Newton's law of universal gravitation to these particles? We propose the idea that these particles may attract each other regardless of distance, resulting in a force that behaves exactly the same way as the force derived from presumed dark matter. Traces of such a force seem to be present in galaxies due to gamma ray bursts (GRBs) that produce entangled particles which hit various objects. We can observe that in barred spiral galaxies the arms always pass through the nucleus of the galaxy so we believe that the very first GRB happened at the central supermassive black hole (SMBH) and the arms are the traces of this ancient GRB. If we see an unbarred spiral galaxy, we can be certain that the arms do not pass through the core and we think the very first GRB happened close to the core. Ring galaxies may also be considered as a type of spiral galaxies, since there is a section where the ring is broken, i.e. where the arms do not meet. So the very first GRB happened far from the core. Elliptical galaxies may have resulted from an ancient GRB which hit from outside. The arms rotating in opposite directions of the NGC4622 galaxy support our hypothesis. Finally in the silk threads of the spider web of the universe, the traces of GRBs can be seen.
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Vehicle dynamics modelling of an electric driven race car
106-114Views:138In the following we are presenting a vehicle dynamics simulation program developed in MATLAB environment. The program is capable of calculating the dynamics functions of a vehicle from its technical data. The program has been successfully applied for the optimization of the technical data of an electric driven race car that was designed and constructed at the Department of Mechanical Engineering of the University of Debrecen.
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What is the function? – experiences of an occasion among the secondary school students
560-570Views:137In the frame of the project EFOP-3.6.1-16-2016-00022 „Debrecen Venture Catapult Program" it was held an occasion among secondary school students the aim of which was formation of that concept which is very important in the engineering area. In many cases in order to solve problems necessary that students have an "ideal" function concept image (the image is interrelated with the notion of the concept) and they can change between different representations of the function. In our paper we will show the experiences of the occasion in which was formed the function concept by investigation of several relationships from the everyday life and engineering area with the help of individual and cooperative learning method.
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Safe, Health Working in Health Care in the Shadow of a Pandemic
85-97Views:245Safe work that does not endanger health is a complex category, the provision of which creates an obligation on the part of the state, the employer and the employee. The task of the state is to determine the basic requirements for work that does not endanger health and safe, as well as the related rights and obligations, and to develop a national policy on occupational safety and health. As a result of the coronavirus epidemic in early 2020, we have faced a whole new form of accidents at work and occupational diseases. In my study, I want to examine the course of the investigation of the infection that takes place during the pandemic in healthcare work, and the possibilities of remuneration for the duration of the illness.
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Correlation Clustering: Analysis of Major Agricultural Commodity Markets
288-302Views:307The aim of this article is to compare the clusters formed by the correlation distances between the agricultural and the energy commodity price returns in different periods of time. The energy and agricultural markets have become more interlinked in the past ten years, which can be attributed partly to the increased usage of biofuels. According to the results of this research, after the global financial and economic crisis of 2008/09, the relationship has become tighter between the agricultural commodity prices and the price of the crude oil. Based on the hierarchical clustering, the relationship between crude oil and sugar, and especially between crude oil and vegetable oils has become stronger. These results support the hypothesis of a more interconnected agricultural and energy market after 2013. Furthermore, the emerged relationship of crude oil with the vegetable oils may indicate the connecting role of biofuels, since biofuels require agricultural input materials, partly vegetable oils. However, the role of biofuels in the present analysis requires further researches.
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Vállalkozói képzés a 21. században a felsőoktatásban – lehetőségek, módszerek, jó gyakorlatok
1-18Views:495Challenges of the 21st century require answers from higher education as well. In Europe, most of the entrepreneurship programmes on the higher education institutions are less than ten years old. Whilst business studies may battle for academic legitimacy, it has a clear advantage when it comes to graduate employability. The aim of this paper is to give answer to the following questions: why entrepreneurship education is important, what are the methods which are already used and what are the results of them. The answers to the questions are based on literature reviews, a case study and in-depth interviews with alumni carried out at the University of Debrecen, where since 2010 Team Academy Debrecen, a new education model from Finland is implemented. Tiimiakatemia education is an innovative Finnish model founded in 1993 by Johannes Partanen that develops team entrepreneurs. Based on the results some of the important elements of entrepreneurship teachability are: learning by doing, passion, learning in teams, coaching and mentoring.
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Personality Traits and Their Validity in Predicting Job Performance at Recruitment: a Review
222-231Views:963One of the most critical challenges human resources management usually faces is the procedure of recruitment and selection. At the recruitment, the factor of qualification is very important. However, HR management should take into account the personality of the candidate. For example, most of the companies' profits rely on the performance of the frontline employee and their behavior toward the customer. Therefore, HR management usually uses the assessment of personality and integrity. Based on the literature, there is a correlation between personality traits and job performance. This study is a literature review analysis which contains previous studies in regard to the of Big Five Factors at the recruitment and their validity in predicting employee’s performance in the firm.
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Statistical and analytical analysis of a data series
399-403Views:82In 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.
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Improving the Work Breakdown Structure of the Plant Installation - Case: Asphalt Plant
174-187Views:378The improvement of the project management forced the industrial organizations to focus on using the project management techniques in their industry, to plan and control the workflow to achieve their targets, further to increase the satisfaction of their customers. One of the most common project management tools are used is the work breakdown structure (WBS), which provide a framework for the implementation of the project scope including project planning, scheduling, monitoring, control, and estimation. Depending on the top-down approach the project activities will be broken into smaller parts that can be measured and controlled during the project implementation. The well-defined construction of the structure contributes to making the project more realistic and visual. However, the misunderstanding of the project WBS among the project team creates deflection and misinterpretation of the project scope. The main issue of this research is to improve the WBS of the installation plan and develop a standard WBS for plant installation. The research was limited to Asphalt plant installation WBS as a case study to identify the weaknesses of the current WBS at the case company which leads to extra installation time and cost. The research is offering a template WBS based on the company logic, defining the frequent risks that affect the plant installation based on the WBS and suggesting a suitable response strategy by recommending a control framework to monitor and control the WBS schedule throughout all installation phases.
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R&D infield of “Waste-to-Energy”in Institute of Raw Materials Preparation and Environmental Processing, University of Miskolc
49-57Views:134The importance of research and development in the field of „Waste-to-Energy” is vital in our modern society trying to establish the circular economy. Such R&D activity has been carrying out at Institute of Raw Materials Preparation and Environmental Processing for decades in several directions. This paper deals with the main results of research on refuse derived fuel from MSW, biogas production, briquetting of biomass, as well as production of fluid fuels.
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Security Analysis of a „Location-stamping” Protocol for GPS Coordinates
1-12Views:159Due to the rapid growth of GNSS based techniques in everyday life a service which can provide certified location information given by GPS coordinates became a worth considering idea. We designed two protocols that can achieve this goal, these can provide authenticate location and time information for any device which has a GPS receiver. In this article, I would like to prove -with the help of ProVerif software tool-, the latter statement. I investigated the authenticity and data integrity properties of the protocol.
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Environmental Index and Environmental City Resilience Index calculation for Four Settlements in Szabolcs-Szatmár-Bereg County and Four in Győr-Moson-Sopron County
17-29Views:121Globalization and urbanization pose a number of challenges for different settlements. Stakeholders seek to cure global problems through sustainable projects. Since the Brundtland Commission's definition of sustainable development in 1987, the approach to sustainability has permeated all dimensions of the economy, including the environmental dimension. In Hungary, IBM conducted a study (Lados - Horváthné Barsi, 2011), in which the search for green, sustainable solutions defined in the definition of a livable city plays a key role. The characteristics of sustainable cities, that they are resilient to disasters, return to equilibrium after a shock has occurred (Seeliger, Turok, 2013). Resilience can also be mentioned as one of the pillars of sustainability. In a UN-Habitat statement, resilience refers to the ability of any urban system to withstand and recover from multiple shocks and to maintain the continuity of its services (OECD, 2018). In my study, I would like to present the results of the environmental index and the Environmental Urban Resilience Index (EURI) of the four largest cities selected on the basis of the population in the easternmost and westernmost counties of the country.
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Justification for the Olympic Reform Package Based on Good Practice
Views:262The Olympic Games have always been the pinnacle of sport and achievement. The modern Olympics are held every four years, and the venue is chosen from among the cities that apply. In my research, I wanted to find out the reasons for the decline in the popularity of the Games. To answer this question, I looked at 2 successful Olympics (2000 Sydney, 2012 London) in the hope of identifying success factors that could be adapted to other host countries. I conducted secondary research, reviewed related international and national research, and the available economic data. During the document analysis, I found that the expected costs of organising the Olympic have increased significantly over the last two to three decades, and under-planning is a common feature. As a result of the research, I have found that the most important pillars of successful organisation are a proper organising committee, comprehensive opportunity and risk analysis, accurate planning, sustainability in planning, continuous cost control, private sector support, and the work of volunteers.
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Situation Report of European Club Football (2017 – 2019)
61-71Views:273The most professional and profit oriented sector of the sports industry is football. International summary analyzes of the sector show a steady increase in revenue over the last 20 years. Yet the real turning point in terms of the profitability of European club football was in 2017, when the aggregate result of the clubs playing in the top European leagues were realized as a profit. However in recent years, the sector has faced serious competitors. The esport industry draws attention to itself with the growth rate of the base of its’ followers and related revenues. Also the fitness sector outperformed the football sector in 2019. In this article I reviewed european football between 2017 and 2019, in order to explore the characteristics of the football sector, to ascertain its revenue-generating capacity, its change in its revenue structure, and to answer the questions that if this sport will maintain its dominant position in the European sports market. My research method was document analisys of annual reports published by UEFA and Deloitte, which allowed me to examine data from more than 700 clubs in 55 countries. In overall it can be stated that the european football industry is maintaining it’s position, but it should allocate resources to stabilize its follower base instead of fearing the endagerment by other sports.
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Do Changes in the Economic Role of States through Privatization matter?: The Brazilian Case
125-136Views:186In market economies, the subject of scientific research is the extent to which the state can contribute to the sustainability of development. However, the question is to know where the boundaries of the market and the role of the state lie. The study briefly introduces different views of the state's economic role and how states have changed the proportion of their entrepreneurial assets. Among these, it highlights privatization, which is one of the significant segments of today's economic policy practice at both micro and macroeconomic levels. It then describes Brazil's economic circumstances that led to the formulation of a proper size privatization program. Finally, the socio-economic factors that, according to the author, make the realization of Brazilian privatization plans uncertain presented.
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Comparative Analysis of Motivation Theories
1-13Views:1162The aim of the article is to compare motivation theories from the view of general psychology and work psychology. The research was done by using secondary sources and by analyzing motivation from both views. The difference between the two lines lies in outcome orientation. Psychology is more descriptive work psychology tends to focus on the results of the motivation process. In comparison, both have their values. The relevance of the research is to provide a theoretical basis for improving the development of more relevant motivation theories.
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Social Innovation for the Welfare of the Community
480-494Views:163The aim of the study is to highlight the focal points that are potentially activating factors in social innovation efforts in the most disadvantaged areas. The study examines certain social initiatives in the Nyírbátor district, with particular emphasis on the efforts promoting community welfare. The study primarily presents the results of qualitative interviews as part of a doctoral research. The examined cases play an important role in the management of the unfavourable processes in the region, and their adaptation as good practice can support the catching-up process. The study identifies the main groups of aspects that, in addition to structuring the case descriptions, also facilitate comparability of good practice. Documentation based on defined criteria supports the adaptation process, which is critical to the successful implementation of social innovation efforts.
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Theoretical Overview of Discrete Choice Experiment
62-73Views:234The purpose of this study is to present a preference evaluation method, the discrete choice experiment. The reader can gain information on the background, application areas (with particular emphasis on health economics), the process and about three models (multinomial logit, random parameter logit, nested logit). Based on the results of literature analysis it can be said that the method is very promising, but in many areas it still needs improvement.
