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  • Labor Market of Enforcement of People with Technical Qualifications in Hungary
    6-10
    Views:
    232

    The main purpose of my research was to investigate the validity of those with technical qualifications in the territory of Hungary.

  • The Role of Renewable Energy Sources in Energy Production and Use
    678-688
    Views:
    442

    The role of renewable energies in energy management is growing both in the European Union and in Hungary. The use of renewable energy sources is already quite large (transport, heating, lighting, etc.) and it is advisable to deal with these energy sources in the year 2020. The use of energy from renewable sources can reduce greenhouse gas emissions and reduce dependency on the continuously problematic oil and gas market. A review of energy data over the last 10 years shows that renewable energy sources are playing an increasingly important role in the European Union. I support this finding by the fact that the share of energy from renewable sources in gross energy consumption has almost doubled in the last few years.

  • Grounds of changemanagement
    257-267
    Views:
    947

    Organisations of the 21st century exist in a permanent change. Change management in business management deals with the analysis of directed and planned changes. However, it does not consider spontaneous changes.Change has been addressed in social science since the 1970s and is of growing importance. As in many cases adapting to the change is crucial for the organisations to survive. With the changeThese spontaneous changes are chaotic processes that are carried out without control. In this paper I present the evolution of changemanagement, and the most important questions of changes.

  • Frequency Domain Analysis of Tractor Tyre Enveloping Properties
    223-229
    Views:
    215

    Main source of vibration excitation for off-road vehicles are ground profile undulations. Most unprepared terrains are characterized by wavelength of unevenness that is of the order of magnitude of the contact length between tire and ground, so that, due to its shape and elasticity, tire actually behaves as geometric low-pass filter transforming real road profile geometry into effective vehicle vibration excitation. Since this effective profile represents real vehicle excitation, it is of interest to study this filtering behaviour in more depth. In this work, investigation of this kind of tire response has been studied for agricultural tractor tire rolling quasistatically over singular road obstacle. Frequency analysis of road excitation and tyre response was carried out in order to obtain their spectra and frequency response function magnitude of the tyre as filter was obtained by dividing input by output spectra. Final assessment of frequency response function magnitude was obtained by averaging instances obtained for different dimensions of input obstacles.

  • Experimental Study Regarding The Influence Of Compliant Hinges Geometry In Mechanical Structures
    125-131
    Views:
    202

    In this paper an experimental study will be carried out, on the influence of geometry, using different compliant mechanical couplings. In the first part of the paper will be presented the compliance of the couplings and a number of consecrated works on this theme will be quoted. The article continues with the case study made on three types of compliant joints. These joints and the mechanics that substitute them will be presented. Towards the end of the paper we explain the experimental method and its results. The final ideas concerning this work will be filled out by conclusions and research directions.

  • Statistical Evaluation of University Student’s Motivation and Personal Competency with Principal Component and Cluster Analysis
    365-374
    Views:
    344

    The aim of the research is to do a statistical evaluation of agricultural and rural development engineer student’s motivation and personal competency. It sums up the late generation Y’s characteristics and challenges. To be a successful, graduated employee, not only the skill is needed but the personal competency as well. Altogether, 121 filled out questionnaires were collected from the students which were the prime source of the research. They had to evaluate influential factors to their motivation level and competence. The database was analyzed with descriptive statistic methods, principal component and cluster analysis. Studying the personal competency, five different factors were divided based on Belbin’s team roles and four clusters. The four clusters were established by the five factors. Analyzing the student’s educational motivation four different components were divided: the need of performance, social entertainment, the benefits of learning in the near future and the reach of the financial freedom. Based on the four components, generating clusters was not possible due to the significance level of the K-means cluster analysis because it was higher than 0,05 in every grouping variables.

  • Submerged aquatic plant (Vallisneria spiralis and Egeria densa) utilisation as a biogas cleaner and feedstock of co-digestion
    172-180
    Views:
    339

    Biogas was produced from sheep manure and two types of submerged aquatic plant (Vallisneria spiralis and Egeria densa). The gas cleaning was carried out by a water scrubber, where a significant part of CO2 and H2S can be separated from the gas. A part of water from the scrubber was circulated through an aquatic plant growth tank and the growth of used plants was examined. Addition of E. densa to sheep manure increased gas yield by 8% and the mixing of sheep manure and V. spiralis resulted in 21% increase in gas yield. With the used scrubber, 70-80 vol% methane content can be reached in the cleaned biogas, and the water from the scrubber (which contained dissolved CO2 and H2S) resulted in 56-87% increase in size as opposed to 12-44% increase in the control group.

  • The Landscape of Civil Society Organizations in the Economy of Kosovo
    334-343
    Views:
    472

    Civil society organizations (CSOs) in the scientific literature have been studied broadly from various aspects such as cultural, political, social and economic. But as far as the last one is concerned, there is still a research gap because there is a lack of study about their contribution to economies under development, such as Kosovo, and which must be filled because of its importance. This paper tends to analyze the present situation of CSOs in Kosovo and their potential contribution to economic activity. Highlighting the activities, the structure and the place of these organizations in the economy will be the approach, in the beginning, to pave the way for further study of specific areas related to them. The methodology established contains analyses of secondary sources that are done by using data from the Ministry of Public Administration of Kosovo, Kosovar Index of Civil Society which is a regular report of the Kosovar Civil Society Foundation (KCSF), and other supplementary data. However, this will proceed after the scientific conceptual issues of CSOs and their place within the economy. Finally, the results show that civil society in Kosovo is very diverse with organizations in different sectors, and the economic activity sector consists of mostly agricultural NGOs.   In transition countries, CSOs are seen as an alternative that improves a particular sector. Thus far, there are over 10,000 organizations established in Kosovo, but relative studies suggest only 1000 to be active. Furthermore, their activity and contribution to economic development is little known so far, while the main problem of the economy remains unemployment.

  • Determination of the Differential Equations of a Dynamical System using Dual Description
    41-48
    Views:
    187

    The paper deals with the description of a mathematical model of a mechanical system using the so-called energy-based approach. The model is created using both generalized displacements and generalized momenta. The latter prescription method is less common in practice, due to its complexity. The two ways are presented through the same example mechanical problem, and a control task is also solved with the help of a PID block.

  • Vocational Teacher Training – Selection of Teaching Aids
    89-96
    Views:
    241

    Teacher Training Programmes provide teachers of Vocational Education and Training schools. Students require adequate educational tools they can get in order to improve their learning. They support interaction and give students an impulsive learning environment. This article deals with the prospective vocational teachers, selection and use of teaching aids after their practical pedagogical training in Vocational Education and Training schools.

  • Analysis of the Policy Background of Transport Related Use of Renewable Energy
    124-129
    Views:
    255

    The EU energy policy prioritizes the following principles: sustainability, competitiveness and security of supply and addresses the reduction of greenhouse gas emissions as a priority. The related EU policy (including the White Paper on Transport) outlines these principles, identifies goals and opportunities for action. At company level methodological guidelines and standard procedures can be used to assess the carbon footprint of the organization, to generate efficiency goals and to prepare action plans. In the Hungarian policy framework, a comprehensive National Sustainable Development Framework Strategy defines the basic principles for the analysis of the sectorspecific or regional strategies. Sustainable Energy Action and Climate Plans (SECAPs) integrate energy and climate issues and include interventions and improvements for the better use of renewable energy sources in transport at municipal level. As a summary it can be stated that exploration of the policy background would needed to influence the use of renewable energy sources for transport and definition of the development goals can help economic organizations to transform their mobility patterns and reduce related carbon footprint.

  • Measuring and Developing Color Aptitude of Students at High Schools
    58-70
    Views:
    233

    The tutoring project called „ Chromatic sensation” will be executed via the project of the University of Debrecen titled EFOP-3.6.1-16-2016-00022 „Debrecen Venture Catapult". The aim of this tutoring project is to develop the students’ sense of colour and their ability to communicate through the use of colours. Our project is recommended to high-school students who might want to engage their further education in the fields of engineering. This paper presents the results of our research where ability to sense brightness differences and saturation differences of students completed their high school studies were tested, and discusses our skill development tools and their applications as an integrated part of our research.

  • Labor market effects of health promotion on human capital
    591-602
    Views:
    610

    Today, workplace health promotion is increasingly present, both domestically and internationally. In my research, I used literature analysis to show how workplace health promotion programs, including physical activity, how affect employee earning capacity and productivity. Human capital is a significant factor in productivity. Human capital can be defined, that the human inner, inseparable features and characteristics of a person to which is invested and, as a result, increases the productivity of the individual. Investments can include health spending (health promotion programs), costs of extra-curricular lessons and time to find the ideal job.

    I’ve been used secondary data collection during my research. In my research I have reviewed the source of literature on health promotion and physical activity primarily. After reviewing the literature, consequence of the research that investing in health, including investing in physical activity, it also contributes to improving health, as well as increasing life earnings and productivity at work.

     

  • Trends in the Internet of Things (IoT) and Influence on the Industries’ Progress
    176-187
    Views:
    346

    This research aims to investigate the critical role of the Internet of Things in the future of industries’ progress. For this purpose, a survey of 250 top managers across 13 industries has conducted. The objective was to find their view of point about what short and mega trends, in which sector will have the most considerable influence in the five years as well as 30 years ahead. Moreover, various technologies are also identified that will have the most importance in the future according to the majority of the respondents, such as Internet of things, Automation and Artificial Intelligence, and, on the other hand, the segments that capital expenditure is currently being directed towards, such as Energy Efficiency and Personalisation of Services.

  • Using Mathematical Models in Secondary Grammar Schools
    76-83
    Views:
    250

    On February 11, 2021, I gave a motivational lecture at the Tamás Esze High School in Mátészalka, and I completed a series of test tasks with the students. In this article, I looked for an answer to how students who are about to graduate approach to solving math problems. The main objective was to investigate whether they prefer to solve purely mathematical or application-oriented tasks, and in which one they achieve better results. In this paper, I analyze the results obtained.

  • A Best-worst Scaling Usage in Marketing Research
    140-151
    Views:
    274

    Best-worst scaling (BWS) is a method of data collection and / or a theory of how respondents give the first and worst rankings in a list. In my article, I look at what best-worst scaling (BWS) is, what areas it is used to, and what the method itself is. I then turn to the BWS method, within which I examine its element: the BWS object case (case 1), the BWS profile case (case 2), and the BWS multi-profile case (case 3). I will detail the use of BWS in marketing research, and then compare the Likert-scaling method and BWS. I summarize my conclusions at the end of my article.

  • Compliant Mechanisms in Progress and Development Of Modern Technology
    186-189
    Views:
    254

    In this paper, the compliant mechanisms will be presented. There will be presented some representative works that have brought progress and development in modern technology. Examples will be presented from simple concepts such as a tweezers, staples, to mechanical clutches, pointer and micro-compliant mechanical structures.

  • Boundary Value Problem for a Heated Nanofluid Flow in the Presence of Magnetic Field
    58-66
    Views:
    203

    The aim of this paper is to introduce some new numerical results on the magneto-thermomechanical interaction between heated viscous incompressible magnetic nanofluid and a cold wall in the presence of a spatially varying magnetic field. The governing nonlinear boundary layer equations are converted into coupled nonlinear ordinary differential equations by similarity transformation. The ODE system is solvable numerically for example using higher derivative method. The investigation is focused on the influence of governing parameters corresponding to various physical conditions. Numerical results are exhibited for the dimensionless wall skin friction and for heat transfer coefficients at the wall, along to distributions of the velocity and the temperature.

  • International Experiences of Introducing Dual Training Based on Examples from Some Countries
    Views:
    394

    In Hungary, dual training was introduced in 2015.  Dual training is a response to the needs of the labour market and has become increasingly popular since its introduction. Dual training is also playing an increasingly important role in higher educationin many countries, helping to modernise education, the knowledge transferred and fostering stronger links between companies and universities. The aim of this article is to present the dual training system and the international experience gained over time, drawing on the literature available on the subject.

  • Designing Aspects and Classification of Bearing Industry Box Handling Apparatus
    325-334
    Views:
    253

    It has been an accepted tendency in the industrial practice since the last third of the 20th Century to decrease the living labour demand of the manufacturing processes. One of the main tools of it is the automation of production. In the design, the construction and the programming of the developed automata, the results of electronics, informatics and mechatronics can be used. All of the scientific fields mentioned above undergo intensive development. By the application of the results achieved in the design of the applications, the monotonous, dangerous and tiresome work not requiring expertise can be assigned to machines. In the longer run, the application of the automata is beneficial also in financial aspect, since the costs of living labour are continuously growing, while that of the mechatronic and technological devices show a rather decreasing tendency. Reliability is also an important aspect. It is well known for everyone that a well-designed and programmed automatic device performs its task without mistakes. If there is any objection or breakdown, on the basis of the currently valid safety technology rules, the machine stops, does not trigger any damage and after its repair, work can be continued.

  • Volunteering in Sport
    217-230
    Views:
    772

    The subject of our research was the examination of the sports ambition and its motivational background. Our aim was to examine the volunteer experience of young adults in volunteering. Our goal was also to analyze the areas in which sports are chosen most voluntarily and what motivates them in sport. The basis for our questionnaire research was the concept of volunteering "4 W" (who, what, where, why). The questionnaire was designed to answer these questions in relation to sports ambition. The data of the questionnaire completed by 371 young adults (mean age = 23.93, sd = 9.93) were analyzed using SPSS statistical software, where we calculated basic statistics (mean, standard deviation, median, mode) and Chi2 test. More than 75% of the respondents have already worked as volunteers. One of the most popular areas of volunteering was sport. The most frequented volunteering area was among schoolchildren and students as well as university sports among young people, after which the area of competition and recreational sports proved to be the most popular. The main motivation of young volunteer workers was the following, : „I had a good mood”, „I loved sport”, „teamwork”, „work experience”, „learning and skill development” and „career perspective”. Organizations, marketing and communication areas in the field of sporting events and sportsclubs volunteering were the most popular in the area where the respondents had experience. A significant difference was found in the field of organizing and marketing volunteering in sports events, 61% of Hungarians worked, while respondents from other countries were only 34.2% (p <0.05). In the field of communication, higher values of respondents from other countries (45.7%), compared with Hungarians (33.7%) (p <0.05).

  • Potential Impact of Innovation on the Competitiveness of Sports
    666-677
    Views:
    446

    Innovation and development activities related to sports and the tools created during the processes facilitate performance sports players (athlete, coach, sports manager) to achieve outstanding results in their field.

    The success of sport can have a major impact on the social image of sport and its economic potential, and thus on the future of the sport. In my paper, I undertake to introduce the innovation processes associated with competitive sport and the products that result from these innovative activities, and then examine how and to what extent these supplies influence the economic and professional performance of the sports under investigation.

  • Staying Employed and Employing Others: Leadership Styles and Management Strategies of Proprietors of Micro Enterprises in Developing Countries
    408-419
    Views:
    376

    This study sought to find out the leadership style and management strategies of the proprietors of micro enterprises that have enabled them to stay in business this long and offering employment to several others in the midst of unfavourable economic conditions in developing countries. Management strategy and leadership style are complementary in pursuing organizational goal. Though, literature on the subject reveals that not much research has been done on the survival of micro business on the African’s continent regarding owners’ management strategies and the leadership style. We used mix methods in data collection and purposive samplings of thirty (30) micro enterprises’ proprietors were interviewed. The result reveals that owners of micro business practice multistrategies in their organizations. The Study found out that the Laissez Faire or Free Rein Leadership and the Bureaucratic Leadership were not practiced by any of the research participants. However, Authoritarian Leadership with strict instructions dominated Democratic Leadership and appeared to have been very effective and yielded result in most micro businesses.

  • Neural Network Based Enveloping Model of Agricultural Tyre
    214-222
    Views:
    179

    The vibration properties of agricultural tractor’s tyres significantly influence its response in terms of the exposure of the human operator to mechanical vibrations, which is still one of the key problems in the design and exploitation of tractors. The behaviour of the tyre in this sense is significantly influenced by the mechanism ofgeometric filtering of the short-wavelength unevenness of the unprepared ground mostly encountered by tractor during in-field operations. Herein, this aspect of tyre behaviour was studied with tyre rolling quasistatically over singular obstacle. Based on experimental results, neural network based model of tyre enveloping behaviour was developed. Main model properties are high computational efficiency, simplicity regarding number of input quantities and absence of the need for explicit parametrization etc. Main shortcomings of modelling approach used are high developing effort, labour-intensive experimental preparations and lack of flexibility regarding tyre design and operating parameters

  • Displacement: Translation and Rotation. Differences and Similarities in the Discrete and Continuous Models
    104-124
    Views:
    297

    The motion (displacement) of the Euclidean space can be decomposed into translation and rotation. The two kinds of motion of the Euclidean space based on two structures of the Euclidean space: The first one is the topological structure, the second one is the idea of distance. The motion is such a (topological) map, that the distance of any two points remains the same. The bounded and closed domain of the Euclidean space is taken as a model of the rigid body. The bounded and closed domain of the Euclidean space is also taken as a model of the deformable solid body. The map – i.e. the displacement field – of the deformable solid body is continuous, but is not (necessarily) motion; the size and the shape of body can change. The material has atomic-molecular structure. In compliance with it, the material can be comprehended as a discrete system. In this case the elements of the material, as an atom, molecule, grain, can be comprehended as either material point, or rigid body. In the first case the kinematical freedom is the translation, in the latter case the translation and the rotation. In the paper we analyse how the kinematical behaviour of the discrete and continuous mechanical system can be characterise by translation and rotation. In the discrete system the two motions are independent variable. At the same time they characterise the movement of the body different way. For instance homogeneous local translation gives the global translation, but the homogeneous local rotation does not give the global rotation. To realise global rotation in a discrete system on one hand global rotation of the position of the discrete elements, on the other hand homogeneous local rotations of the discrete elements in harmony with global rotation are required. In the continuous system the two kinds of movement cannot be interpreted: a point cannot rotate, a rotation of surrounding of a point or direction can be interpreted. The kinematical characteristics, as the displacement (practically this is equal to translation) of (neighbourhood of) point, the rotation of surrounding of that point and the rotation of a direction went through that point are not independent variables: the translation of a point determines the rotation of the surrounding of that point as well as the rotation of a direction went through that point. With accordance this statement the displacement (practically translation) (field) as the only kinematical variable can be interpreted in the continuous medium.