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Examining Used and Sportswear Supply Chain Strategy and Indicators
86-98Views:391The 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:334Global 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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The Middle East perspective of Corporate Social Responsibility
282-291Views:535Corporate social responsibility (CSR) in the Middle East is gaining more importance than in the past. Although it still remains more about philanthropy and charity, it moves towards a more strategic approach which includes formalizing ways of giving, as a set of non-random actions, and focuses more on addressing social ills and environment, economic challenges, that are hindering development. However, the business in the region has not yet taken the step to fully integrate the CSR into their core business operations. The most common challenges that facing the CSR implementation are the lack of government requirements and incentives, spreading awareness, building CSR partnership model, going beyond the marketing and PR campaigns, and full integration of CSR into the business strategy. In this paper, we aim to introduce the current state of the CSR in the Middle East and its perspectives, besides reviewing its evaluation stages, motivations, and current challenges. Moreover, we aim to examine CSR common practices through examples from the financial sector. The research method applied in this research is based on secondary data sources and we have used desk research to illustrate most important points and findings on the topic.
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Study on Mathematical Competence and Attitude of Engineering Students
43-55Views:359Efficiency of the learning process is in the focus of studies dealing with the Hungarian higher education, including engineering education. The efficiency can be evaluated if the required competences are declared and systematically controlled. In this paper the results of a graduate student survey is presented. Students taking part in the survey have got a bachelor's degree in engineering and are first semester students presently in different engineering master programs. Mathematical thinking ability and creativity, as important competences in studying mathematics were measured with the questionnaire, rather than formulas and complicated calculation methods. Students’ experience in studying and applying Mathematics were asked in the first part of the questionnaire.
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Unfinished Spaces
43-50Views:234My paper studies unfinished spaces . My research is mainly focused on defining the concept of space and the adaptive characteristics of it. It also tackles the issue of "being unfinshed" based on various aspects and perspectives.
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Analysis of Construction Risks
1-10Views:256The article from a longer, in practical working risk management theory and general methodology, as well as the circumstances of the construction projects for bridging study assumed abyss has been created based on the instalment. The emphasis placed on construction projects risks typical data resources, project planning methods. Construction risks and the risk management methods dealing with a separate study.
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Constantly Changing: Revitalization of Our Existing Building Stock with a User-centric Approach Through the Comparison of Three Hungarian Examples
94-110Views:730Our built environment’s community-oriented spaces are rapidly becoming obsolete in response to current social, cultural and economic demands. The renovation project of the tímárház Szárító műhely in Debrecen presents a new potentional transformation model in the region with a focus on community-creating and cultural awareness. The incremental, cost-effective small-scale intervention and adaptive reuse of the building’s spaces provide an opportunity to preserve its values and swiftly respond to evolving needs. In order to validate the underlying principles of the interventions proposed in the plan, it will be compared to two similar-minded examples, the Művészeti Ellátó in Eger and Szabadkikötő in Pécs. The projects were examined through the processes occuring within their respective life cycles, as their transformations exhibit recurring patterns. The analyses were conducted based on interviews with the creators, online articles, studies and on-site visits.
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Applicability of Optimization Methods in the Design of Automotive Rubber Products
358-363Views:319Size, shape or topology optimization are widely used to fulfil the requirements in the design process of rubber products. In many cases, the shape of the product is very complex and comes into contact with other components during operation. It is commonly subjected to large deformation for which the rubber shows strongly nonlinear behaviour. For this complex problem analytical solution is not available, thus finite element method could be used in which the analysis running is a time consuming process. The object of my research is to compare the efficiency and computational cost of different optimization algorithms. This article focuses on the applicability of various optimization methods in the field of automotive rubber goods. Direct search optimization and surrogate model optimization methods will be introduced.
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Measuring and Developing Color Aptitude of Students at High Schools
58-70Views:264The 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.
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Use of the Renewable Energy in the Hungarian Residential Heating
68-75Views:461The purpose of my research is to compare the main energy sources in Hungary. These are the firewood and its compacts such as briquette, the natural gas and the electricity. I was wondered which energy became the most economical for an average Hungarian consumer with the recent changings of the market, only considering the proportion of the price and the heating value. The natural gas can be more competitive again thanks to this rapid market changes. The consumer price of the electricity and the natural gas decreased because of some governmental decisions, but this can’t be said to the firewood, which prices are in constant increasing, however, in some parts of the country this is the only available resource for heating. In these places, people will burn some other stuff to complement the lack of the main resources, and this will worsen the quality of the rural air. I represent the changes of the recent years with some ratios, then make a hierarchy about the mentioned resources in 2017 and five years earlier only from heating value.
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Wind Tunnel Making in Practise
19-24Views:249In this paper, we examined the low speed wind-tunnels. Our goal is to construct an open flow system windtunnel that can be utilized in our measurements. To make such a wind-tunnel we needed to build a prototype and calibrated with the help of measurements. Than we determined the flow at the area of measurement. Finally results of the measurements satisfied our expectations. Although there is still much more in development that we would like to do based on the newly gained experience.
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Analysing the Conditions of SMEs Regarding Quality Assurance in Hungary and the European Union
Views:414Nowadays, 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.
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Maintenance from the Work Safety Point of View
190-196Views:304Deterioration of the technical condition of plant equipment is a common phenomenon nowadays. According to the experience of authorities, all this contributes to the occurrence of malfunctions and accidents. Plants that operate with an inadequate conservation strategy are now nearing the end of their design life, thus posing an increased accident risk. Aging processes are often accelerated by the operator's underestimation of the effects of equipment stress and the extent of deterioration mechanisms, and the consequent inadequate design and operation of condition monitoring and maintenance procedures. The aim of our work is to examine trends in the light of modern maintenance optimization methods and, in connection with this, to make proposals for the optimization of maintenance scheduling for employers.
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Designing, Modelling and Analysis of Straight Turning Tool Geometry
11-16.Views:252We execute the planning, modelling and examination of straight turning tool geometry with the help of a software in the modelling space. Our aim is to create a programme that – given some lengths and angles – calculates the corresponding geometry. It establishes that as a wireframe model in a file format that is easily transmittable to the CAD softwares of today, so any additional changes can be done there. An optimal geometry can be defined for the best possible chipping conditions using finite element simulation and with given technological parameters and material quality standard.
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Agriculture and Seasonal Work - Features and Prospects
416-428Views:460In terms of employment specialities, certain sectors of agriculture may show quite a different picture. Especially the seasonal nature of employment, including day laborers and / daily work hireling nature deserves attention. In our country it has long tradition and can be directly linked to regional mobility and commuting trends since some people move near the western border to Austria for work. However, at the same time, near the eastern border, seasonal workers arrive from the East, which has an impact on the local labor markets, and for the lives of some settlements. In our study, we want to study and elaborate the specific details of these processes that connect the two countries and the issues of the advantages and disadvantages as well. In our paper we rely on literature data, private experiences, and the opinion of small scale farmers in Szabolcs-Szatmár-Bereg county, who have experience in employing laborers on a seasonal basis.
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Examination of International Fisheries’ Agreements with Game Theoretic Approaches
167-175Views:320Nowadays, the application of game theoretic approaches is becoming more and more popular in different types of resource management problems. Overfishing is a growing problem worldwide and well known from literature. Unfortunately the tragedy of commons could be observed in several empirical studies in the case of international fisheries. In our paper, we focus on the examination of international agreements related the fisheries’ management (with special focus on the issues of overfishing) using game theoretic approaches. We review the history of fisheries’ agreements and the main game theoretic results, well known from literature. We highlight the main types of games applied in the previous research studies and summarize the main results related to the outcome and the stability of the game. To this topic better understood, certain empirical examples are introduced as well.
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Vocational Teacher Training –Modeling, Professional Vocabulary Development, Connecting Subjects
61-71Views:327Vocational Teacher Training Programmes provide teachers of Vocational Education and Training schools. University of Debrecen Faculty of Engineering offers Vocational Teacher Training in five specializations, in form of cooperative training. The company specialists participating in the training teach prospective vocational teachers with modern professional knowledge. The aim of this article is to summarize the pedagogical experiences of the prospective vocational teachers, based on the content analysis of their lesson plans. The investigation focuses on prospective vocational teachers’ examples of modeling, professional vocabulary development and connections between subjects from their practical pedagogical training in Vocational Education and Training schools.
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Investigation of Zeta Potential of Water Based Nanomagnetite-Bentonite Dispersions
54-66Views:350The stability of different type nanomaterials play an important role among recent scientific and industrial
challenges, including the examination of the effect of polymers, surfactants and their mixture on surface and electric surface properties and aggregation extent of dispersed particles, which are of utmost importance. Bentonite and its composite with different nanomaterials are frequently used for instance in environmental protection for wastewater treatment, since due to their great specific surface area they have excellent sorption properties. There are several publications in the literature for the application of bentonite in drilling muds. By using them the fluid loss can be decreased during the drilling process, the filtration of the fluid can be increased, it also improves the rheological properties and the formation damage can also be mitigated. During research the investigation and the analysis of the zeta-potential of nanoparticles and their composites at different pH and salt content can be an interesting topic. During our experiments the electric surface properties of nanomagnetite synthetized in laboratory (NM), cation
exchanged bentonite from Mád (Be) and the composite particles of these particles were investigated. Hybrid particles of different compositions (9:1, 7:3, 1:1, 3:7, 1:9) were analyzed at different potassium chloride concentrations (0.1 – 0.0001 M). The surface adsorption on the surface, i.e. the change in the surface charge can be traced well by analyzing the obtained zeta-potential values. The behavior of such systems was observed in the full pH interval, thus, valuable data were obtained regarding the colloidal stability. As for the stability, different requirements may emerge in practice, there are application fields where the colloidally stable system is advantageous, on the other hand, in some cases, ceasing the stabile system is the goal. Our investigations are of high importance in terms of stability and its characterization. -
Quality Questions of Clinch Join
122-127Views:219This article deals with the quality of the clinch joints. Due to the volume of the production there is a need for the inspection of the joints and the monitoring of the joining process. Different producers give solutions for the inspection and monitoring and these solutions will be introduce through 1-1 example their importance.
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Decision Support for Difficulties in a Furniture Manufacturing Company
405-418Views:292In “Decision support for difficulties in a furniture manufacturing company” titled work we are presenting in detail the operation of a particular furniture company and the difficulties encountered during its operation, which they try to overcome in some way so that they do not hinder the operation of the company. After that, we will show how we wanted to achieve the production support system. In different versions, we detail what we actually wanted to accomplish while showing results that illustrate the evolution of the system. We also present the difficulties of the development, which is made in Java. We also present the latest version of the system and its results. After processing the input parameters, the system is able to produce results using scheduling algorithms that can help in making important decisions during production planning.
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Food Industry 4.0 Readiness in Hungary
1-12Views:556In terms of production value, the food industry is the third-largest in Hungary, the first in Hungary in terms of the number of employees, and the first in Europe in the processing industry, as well as a significant user of resources. The research examined the state of art of digitalization readiness, focusing on I4.0 technologies, which supports the management to operate more efficiently the enterprise and to make better decisions. So the focus was on integrated enterprise information systems, management support systems, business intelligence systems, industry 4.0 technologies, and issues related to their application. The analysis based on an online questionnaire survey the request sent to 4.600 enterprises, the response rate was 5% which was representative of the branches of production, covered the Hungarian food and beverage manufacturing sectors in 2019. The companies were asked the most critical technologies in development, going towards Industry 4.0. The research tools were LimeSurvey, Mailing List Server, Excel, Power BI (Desktop, Publishing Server to distribute the results). The used analysing methods were making calculations, pivot tables, models, dasboards. We found that a significant portion of businesses, 78 %, use mobile devices in the manufacturing process. The three most relevant digital technologies are geolocating (GPS, GNSS), cloud computing, and sensor technology. The current level of digitalization and integration cannot be said to be high, but respondents are very optimistic about expectations. Improvements are expected in all areas in the next 2-3 years in terms of digitalisation and integration. Vertical integration involves, first and foremost, cooperation with partners in the supply chain. Horizontal integration means close, real-time connectivity and collaboration within the company. Unfortunately, between 6% and 15% of SMEs (approximately 9% on average) and large enterprises, 36% have a digital strategy. According to the survey, the sector needs significant improvement and creating a digitalization strategy.
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Testing the Sametest-effect in a BSc-level Business Communication Course Examination
10-15Views:275Using secondary data, we empirically examine two biasing effects that may arise in the written evaluation of large groups of students. Suppose the students take the examination in consecutive groups, and we wish to avoid the distortion caused by tests of different difficulty. In that case, we can decide to use the same examination questions. However, the danger of the "same test effect" arises, according to which the group writing later can perform better if it receives information from the examinees in the previous round. Using the same examination tests cannot be recommended if that effect is significant. Another related potential phenomenon is the "revealed sameness effect". Accordingly, if the examinees are aware of the repetition of the questions, it significantly increases the scores of the following group. We tested these phenomena using the data of a three-round written examination. A previously published analysis of a larger sample found that the "same test effect" can be expected if the students decide in which round they take the examination. Since it was possible to freely register for the examination rounds for the assessment analyzed in this study, we assume that the "same test effect" will be significant. Based on the literature, we also expected that the "revealed sameness effect" would occur in the third round. The performed linear regression analysis (N=77) only found some weak evidence for the 'revealed sameness effect' but not for the 'same test effect'.
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Derivation of ZF6HP26 Speed Transmission
48-63Views:421Due to the increasing importance of automation, automatic transmissions have appeared. The different ratios of the transmission may be achieved by braking and coupling the corresponding elements of the planetary gear sets connected in series. The focus of the study is on the ZF6HP26 transmission. After disassembly and clarifying the teeth number of the gears, we derived the equations parametricly providing the ratios using the speed equations published in the literature. The ratio of each gear is calculated by substituting the particular teeth numbers into the derived equations.
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Examination of Innovative Wastewater Treatment Method for Chemical Treatment of Municipal Wastewater
136-144Views:578The VízTEC Ltd. and Debrecen Waterworks Co.’s management mutually expressed their intention, that to designate a period of research examining the Debrecen Waste Water Treatment Plant’s (WWTP) intensification. During this period, the newly developed product, VIRON Plus 40 coagulating agent will be tested provided by the VízTEC Ltd. The aim of using the VIRON Plus 40 coagulating agent is the examination of intensification opportunities of Debrecen WWTP. The functions of the new generation of coagulants go beyond inorganic phosphorus precipitation and are growing. A modern WWTP is not only clean the water but also produces energy and usable sludge product. The appropriate energy balance, cost efficiency and carbon dioxide emissions reduction get increasing emphasis in WWTP’ operations.
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Napenergia használata villamosáram termelésre egy családi házon vizsgálva
1-12Views:286In this paper we compare the naturalgas and solarenergy utilizatio nwith the help of SWOT analisys. Than we are presenting the solarpower utilization devices and system installation in economic point of view. And two payback calculation method is demonstrated on a family house.
