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The Impact of a Coronavirus Epidemic on China’s Public Debt Ratio Growth
151-159Views:240Public opinion in the economic profession is strongly preoccupied with the expected negative economic effects of the coronavirus epidemic. Among the consequences, special attention is paid to the increase in the gross debt of the states. Indeed, based on conventional economic knowledge, it is clear to everyone that the economic downturn and the increase in government sector expenditure will directly lead to a sharp rise in government debt. The study aims to predict an increase in China’s government debt ratio using a macroeconomic model. The study will quantify the rate of increase in China’s public debt based on four theoretically possible scenarios for the course of the coronavirus epidemic. I am aware that it is difficult to apply conventional economic knowledge to China’s state-capitalist system. This is explained by the fact that the theories of the socialist economic model do not apply to China either. At the same time, the functioning of China's economy is closer to that of market-based economies, but the country's structure as a whole cannot be integrated into this framework either. But models describing the economic development of developing national economies cannot be applied to the country either. Nonetheless, I attempt to use conventional economic economics to attempt to quantify the impact of the coronavirus epidemic on China’s sovereign debt ratio. China’s public debt growth rates calculated under different outbreak scenarios are different, but none show an increase that would call into question the financing of China’s public debt.
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Effect of the Changes in Bulk Density and Granulometric Properties on the Strength Properties of the Moulding Sand Mixtures
116-122Views:151Foundry technology uses a lot of several natural materials. Sands use for preparing mixtures whereby making moulds or cores. Sand is defined as a granular, refractory major portion of mixture (90 – 98% in dependence on used binder). Sand properties depend on it has chemical and mineralogical composition; mainly particle size distribution and shape of grains and its size and sand surface texture. A comparative measurement of two quartz sand with different surface quality was carried out. Greensand mixtures were prepared to measure their permeability, compressive strength and wet tensile strength. The strength of sand mixtures has two main components. One of them is the cohesion of the binder; the other one is the adhesion between the binder and the foundry sand. The aim of this research is to determine the ratio of cohesion and adhesion within the strength values.
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Development of a Small-Scale Plastic Recycling Technology and a Special Filament Product for 3D Printing
365-371Views:299In our days, the fight against pollution has become a real challenge for the state. recycling is one of the solutions that is adopted in several nations to reduce the rate of plastic discarded in nature. The amount of plastic waste has been increasing for decades contributing to the environmental pollution that is one of the most serious problem of the mankind. according to the statistics not only the household plastic waste, but the industry discharge is increasing because the utilization of plastic as a raw material is more and more extending. plastic can be found in a lot of products, huge number of bottles, plastic bags, computers, auto parts are sold every day. The current applications for using recycled plastics in fabrication and design are fairly limited, on a small scale, plastics (such as abs, HDPe1, or Pe2t) are shredded and formed into pellets, and then either extruded into lament to be used in existing 3d printers, or injection molded into small parts and pieces of larger components. at a large scale, recycled HDpE is melted into sheets and either used directly as sheets in construction, or then heat formed from a sheet into components for construction. these methods of fabrication using recycled plastics are the norm because of their straightforward processes. nevertheless, each method leaves some complexity to be desired. This paper we study the types of plastics and diagnose the pollution caused by the latter. this allowed us to design and size a recycling station of plastic into filaments for three-dimensional printers. this station which will contribute to the fight against pollution. the station consists of two machines for grinding of the plastic and the other for the extrusion of the desired filaments. we were able to make a theoretical academic study on both machines and also we designed with solidworks 2015. The theoretical study is spread of the mechanical calculations necessary to the design and validation of the structure using the tools. as the prospect of this project, we want to complete the achievement of this station while completing the crusher and extruder mechanically. then switch to electric and electronic parts (introduction of engines, sensors and wiring...). In the case of waste plastics that are recyclable and reusable. the most widely used are polyethylene terephthalate (pet, used for synthetic fibers and water bottles), and second high-density polyethylene (hdpe, used for jugs, bottle caps, water pipes).
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Kinematics and Control of a Planar Cable Robot
88-95Views:123This paper deals with the kinematics and control of a planar cable robot [1], which is driven by four DC motors with gear. Cable robots are frequently used e.g., for the motion of cameras in sport halls and stadiums and also in high storage logistical systems [2]. Main goal of this research work is to design and build a test bench with low budget, which can model the motion of real life cable robots.
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Egy világméretű sportesemény, a 2017 Vizes Világbajnokság néhány társadalmi aspektusa a jövő managereinek szemszögéből a felkészülési időszakban
40-59Views:713Hungary hosts the 2017 FINA World Championships and Master’s Championships, one of the world’s largest sport event. Besides exploring the influential factors behind the potential effectivity, this study aims to identify social effects related to the event. Students in higher education today are the next generation of managers and company owners, therefore their attitudes and opinions will be determinative in terms of the decision-making. The empirical research took place in the University of Debrecen, the most populouses University of Hungary, 6 month before the official opening ceremony of the Championships.
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Selection of Possible Installation Sites for Sour Cherry Refrigerated Containers and Estimation of Container Volumes to be Installed Using GIS Tools
108-115Views:40The purpose of this study is to propose the selection of installation sites based on publicly available data and sour cherry refrigeration container specifications, as well as to estimate the number of containers to be installed at possible sites. Today's escalating fuel supply and fuel price extremes make it particularly important to develop a sensible logistics sub-solution in the complex process of production, harvesting, storage, processing and sales. We undertook to develop a geospatial system that can be built and operated economically, its data sources can be updated occasionally or even at regular intervals, it is suitable for producing other outputs with additional descriptive or spatial data.
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A Wounded Soldier Fighting on two Fronts: Civil Society Organizations Initiatives Struggling to Overcome the Pandemic Crisis by Practical Protective Means, Volunteerism, Reporting and Awareness Campaign Discourse
136-151Views:145Given the fact that the covid-19 pandemic virus has had a pervasive impact on almost every sphere of life globally, it is noteworthy to highlight the role and position of the civil society sector, and this paper intends to do so by striking at two matters. Initially, outlining the impact on the functioning and activities of Civil Society Organizations (CSOs), to then proceed with their response to the crisis, through new multifarious initiatives/activities. The analysis was developed by using, essentially, unobtrusive data and direct non-participatory observations of Non-Governmental Organizations (NGOs) in Kosovo that have had initiatives against covid-19. Although CSOs were badly affected by the pandemic as such, and the consequences it brought, whether, through measures and/or neglect from the central level, they still found the resources and willingness to launch initiatives to combat the pandemic in the form or different. All over the country, appeared organizations which among their activities found a place for awareness campaigns, material and financial assistance to citizens in need, production of masks, face shields, and other protective equipment for citizens or health institutions, and providing voluntary assistance as health staff. To link practice with theory, there are presented cases of NGOs that well reflect scholarship ideas such as the need to have a classification of CSOs based on activities, the importance of their IT repertoires, coproduction, and especially the response to the crisis. The importance of this study grounds on the benefit it brings to understanding the role and contribution of CSOs in exceptional times of crisis, especially for a society that underestimates and neglects this sector.
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Simulation Aspects of the High Pressure Die Casting Process
521-529Views:80High pressure die casting (HPDC) is a manufacturing process for producing accurately dimensioned, sharply defined, smooth or textured surface metal parts. It is accomplished by injecting liquid metal at fast velocity and under high pressure into reusable steel dies. Compared to other casting processes, die casting is at the top end of both velocity and pressure. The high velocity translates into a very turbulent flow condition. The process is often described as the shortest distance between raw material and the finished product.
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The Possibilities of Additive Manufacturing in Medical Use
246-253Views:95Additive Manufacturing has been invented in 1981 at the University of Texas, and to this day it has grown to be the most versatile and promising manufacturing technology in the market, both the industry and health care system has noticed this. Additive Bio-Manufacturing (ABM) techniques, which can be used in health care, are highly in demand, and researches have been going on to make these technologies safer and even more versatile. For more utilization and versatility, special attention is required to develop new materials which can help in increasing the service life, bioactivity, cell growth along with the desired mechanical properties, and to find the right manufacturing parameters for creating optimal products. The aim of this review is to present the available main Additive Manufacturing technologies, and particularly the biomedical usability of Additive Manufacturing.
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Material Stock and Flow Analysis within the Agricultural Building Sector Based on Local Database
297-320Views:115The purpose of the paper is to analyze on micro level the stream of building materials needed for raising cattle. The scope of the produced material flow chart will cover the inflow and storage of the materials. The overall objective of material flow analysis is to contribute to the data inventory development process which is needed to use these construction materials as secondary raw materials in the future. The assessment is based on a concrete new development in a Hungarian region being carried out nowadays as a development and modernization of an existing cattle raising farm. Driven by the concern of resource depletion, further research on higher level, based on larger database will be needed to verify the estimated national level results for the magnitude of growth of anthropogenic stocks.
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Investigating the Effects of Active Cooling in 3D Printing
39-47Views:1273D 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.
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Urban Transportation Problems and Issues in Homs-Syria: Analytical Study of the Current Condition and Proposing Future Solutions
30-42Views:283Cities in the north middle east are known for their past and old valuable heritage, with a complex master plan of each one. Homs city is Syria is one of them, it has a history dates back to 2000B.C. with a unique formation of the city. However, the urban area of Homs has a very distinctive characteristics, but unfortunately it suffers from the transportation system operated. The congested and unorganized planning process have led the city to a complete mess and disorders, for all categories of its inhabitants. This study analysis the components of the transportation system, and identifies the greatest issues and problems the inhabitants suffer from, by locating the driving forces and the causes of these issues, and generally asses the quality of the system itself. Therefore, a holistic approach is proposed to improve the transportation system, and suggests some key plans to shift the city to a higher level of development. By locating the strength points, and detect the benefits of these strength points and exploit them. By evaluating the road network and create a new system that mitigates the negative environmental impacts (emissions, noise…) and reduce the crowded gathering of inhabitants, which caused a severe stress in their daily life. Overall, an attempt of implementing a new transportation system to contribute in the development process, and opens the possibility to develop other systems of the city in a sustainable framework.
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Development of Efficient Drive Based on Self-help
147-151Views:70The efficiency and the life rating are essential characteristics of mechanical drives. The traction drives with proper geometry can avoid the geometrical slip and their efficiency can exceed that of the gear drives. The elements has hardened steel surfaces, the lubricant is rheopectic. There is no danger for thinning the oil film and consequently for connecting the asperities. The traction drives are relatively noiseless, they are applicable for increasing speed in particular. There are some problems to be solved in friction drive. This is the necessity of clamping force. A simple machine element usually make a constant clamping force, a tensioning mechanism can be too complicated. The ideal solution is a simple design which assure a clamping force that is proportional to the instantaneous external load requirements. The authors suggest a modified machine element – a helical torsion spring, an elastic one, instead of the original, rigid annular wheel – that comprises both the driving and clamping functions, and the latter one is proportional to the external load, so that the principle of self-help operates.
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The Appearance of Dark Triad Among University Students
579-588Views:277In recent decades, the examination of the so called “Dark Triad” – narcissism Machiavellianism and psychopathy – occupies a prominent place in personality research. These socially undesirable characteristics, which, to some extent are present in everybody, can play an important role in the workplace. Dark Triad members are those, according to the literature who are strong in all three features. In my paper I will present the results of a study I conducted among the students of University of Debrecen Faculty of Economics and Business. I analyse the Dark Triad characteristics of students with the help of a validated measure the Dirty Dozen. In my research I try to find answer to what extent these personality traits appear in the examined sample? Is there any difference depending on the background variables (age, sex, educational programme ...)? Are my results consistent with those described in international research?
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Teaching the Analysis of Newton’s Cooling Model to Engineering Students
63-68Views:84To apply mathematical methods to physical or other real life problem, we have to formulate the problem in mathematical terms. It means that, we have to construct the mathematical model for the problem. Many physical problems shows the relationships between changing quantities. The rates of change are represented mathematically by derivatives. In this case the mathematical models involve equations relating an unknown function and one or more of its derivatives. These equations are the differential equations. In this article, teaching the analysis of Newton's cooling model to engineering students is presented as one of the applications of separable differential equations.
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An Overview of the Situation of SMEs in Hungary in Catching up to Industry 4.0
72-80Views:113Since I have been working I have been in contact with small and medium-sized enterprises (SMEs) and large companies in various ways. I have thus been confronted with the disadvantages of the former in terms of the introduction and use of 4IF technologies. Yet most of them are aware that to remain competitive in the market, they cannot avoid digitising their operational processes to some extent. I have also found that this mainly depends on the characteristics of the organisation; for example, its orientation. Domestic SMEs are therefore currently at a competitive disadvantage in the market. However, there is no information on whether there is a trend towards development and where they themselves should develop. This would help them to develop the right, achievable vision for the future, coupled with a feasible business strategy.
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The Global Electric Car Industry and the Related Indirect Emission
Views:512Our planet tries to create a more environmental friendly transport. Related to the car purchases we can determine the consumers’ attitudes have changed in the last years and we can say that the electric cars have become one of the most significant participants in the industry. In one of his investigations Christopher Buchal realised electric cars can burden the environment with more than 11-28% than the avarage engine cars. It is possible if we make difference between direct and indirect emission, because the direct emission of the electric cars is zero, but the indirect emission can be really high related to the power generation. My goal is giving a real picture about the electric car industry and presenting my suggestions for the future.
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Mechanical Design and Finite element Analysis for Acetabular cup
23-35Views:103Hip replacements typically consist of a four-part piece. Our research will focus primarily on the acetabular component. Several different types of materials can be used when creating a hip replacement implant ranging from plastic to titanium. Different materials are used to accommodate for allergic reactions or circumventing potential health risks. Aside from the material, the size of the components plays a factor in terms of durability; a larger diameter head might avoid dislodgement though it could increase wear and tear on the stems through constant friction. A patient’s force applied to the hip replacement is usually measured through a number of physical assessments. Finite element analysis (FEA), a computer-based method of data observation, allows for us to accurately simulate hip forces and their impact on the hip replacements. Through this, it becomes easier to predict and calculate the performance of specific designs. Generative systems can also be used to support performance analysis and optimization through assessing a multitude of cases, many of which apply in real-world scenarios. By applying both systems, we designed and modeled an acetabular cup that when measured decreased the mass from 129 grams initially down to 52 grams, a 60% decrease in total mass. Furthermore, the design we created lessened the trauma on the piece through distributing force across the entirety of the piece rather than specific segments only. This shows an increased durability and life expectancy when compared to usual acetabular cups.
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Digitalization of Ancient Sculpting Models and 3D Design Using Photogrammetry Methodology
458-465Views:125The digitization of ancient sculptures is particularly relevant and necessary in relation to the preservation of the cultural heritage. And the studied ancient models have their unique identity in terms of their visual and functional qualities. In parallel, the study aims to optimize the technological process related to photogrammetric measurements and calculations, technological tools and specialized software applications such as Autodesk ReCap, Blender and MeshMixer. The used models in the article are for re-presentation of popular ancient models & artifacts from city of Varna (by the ancient name Odessos). By using a 3D print device, one of the resulting digitized models of an ancient angel will materialize by applying specific techniques to redesign its geometry. The completed 3D printed item of re-designed model of ancient stone angel is only for personal and non-comercial use. One of the main point in the article is to show advanced computer techniques for teaching and studying. The information in this article has been built for helping other specialist working in digital field regarding photogrammetry. Also the material can be useful for designers, engineers, archaeologists and others in their work for the publicity of ancient treasures.
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Laboratory Testing of Rediffusion of Contaminants Using DKS-Permeameter
41-48Views:121Decades long hydrocarbon contaminations effecting heterogenous groundwater systems is a common problem both in Hungary and worldwide. Only the treatment of aquifer layers is possible with remediation technologies, so the contaminations remained in the aquitards are released back to the treated porous layer after the treatment due to the changes in concentration-gradient. This process is the so-called back-diffusion: as a result, the previously removed contaminations appear in the remediated layer again. In order to get better understanding of the rediffusion process and the influencing parameters series of measurements were carried out at the University of Miskolc Faculty of Earth Science and Engineering using a special laboratory device called DKS-permeameter. With the help of some small modifications it can be used for the modeling of backdiffusion. Artificially contaminated soil samples were built in the DKS-permeameter from which contaminanant release occured due to back-diffusion. The concentration values were determined with spectrophotometric measurements.
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CSR Activities of International Ice Hockey Clubs
Views:146Worldwide there is a growing ephasis on corporate social responsibility (CSR) and became increasingly important for sports organisations too. At the same time the international research and study numbers increasing, which examine the practical application of the CSR concept in sport.
The study provides an insight into the importance of CSR activities in foreign hockey clubs, especially in Finnish and Swedish hockey clubs with long-rooted hockey cultures, through expert interviews and their analysis. We get an answer for how they have integrated environmental activities and helping society into their every day live. Good examples from abroad are provided, ont he basis of which this study can help the hungarian sport clubs who want to develop their organisation through CSR activities.
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New Research methods of Sales-Marketing Interfaces
160-183Views:314The energy invested in research in this topic is justified by the fact that the lack of optimal integration between SM (sales-marketing) can negatively affect overall corporate efficiency. The aim of this article is to present possible research methods that can reveal the impact of selected indicators, such as information exchange, coordination, vision and communication, conflicts, on the operation of the SM interface, according to Hungarian and foreign employees of international companies, and how they affect sales and marketing collaboration between pharmaceutical companies (PMC) and non-pharmaceutical companies (NPMC). It also attempts to demonstrate how the Partial Least Square (PLS) path modeling technique can provide valuable information on the consequences of management activity, and how the methods provided by Voyant Tools provide further research through quantitative analysis of qualitative data on the marketing sales interface (SMI), they can open up opportunities. The PLS-PM modeling technique was used to explore the relationships between the selected factors and possible hidden variables. These results clearly demonstrate that there are factors that influence SM collaboration that operate differently in PMCs and NPMCs, and that nationality differences can have a significant impact on how employees evaluate factors that affect SM collaboration. Of the methods we selected by Voyant Tools, the t-SNE (t-Distributed Stochastic Neighbour Embedding) tool proved to be the most sophisticated analysis, allowing the deepest analyzes by exploring relationships between groups of terms. -
Energy-Efficient Buildings, a step towards Sustainability in Pakistan
109-124Views:241With every passing year, energy consumption in the world is increasing drastically. Most of the energy comes from fossil fuels which are also depleting in a fast manner. Buildings consume a significant amount of energy all over the world and the demand for energy is also increasing unremittingly in buildings. Developed countries are taking profound measures in order to make buildings energy efficient and sustainable by achieving nearly zero energy stage. Pakistan is facing a serious energy crisis from the past few decades. The building sector in Pakistan deserves special attention in this regard since the energy consumption in buildings in Pakistan is feverishly high. Many types of research have been carried out in Pakistan by the United Nations and Energy Department of Pakistan in order to devise applicable methods that not only provide thermal comfort to the occupants but also make a building energy efficient. Renewable energy also plays an important role in compensating building energy demands. It is easy to achieve nearly zero energy state in a good energy efficient building if it is coupled with renewable energy sources then it will make it self-sufficient in energy demand. A survey is also carried out to determine the thermal comfort of the occupants in different types of areas. Also, solar energy analysis is also taken into account to highlight the solar power potential in Pakistan. Several recommendations have also been suggested to implement energy efficiency measures in Pakistan.
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Connection Between Internet Using Habits and Ethical Attitude of Business Students
14-25Views:115In these days we are witnessing a trend of more and more using IT assets and the using of internet too. As teachers at the university we can see that our students also tied with a thousand threads to the IT world. Current research aims to explore the students’ internet using habits, how many times they spend on the web and why. In our previous work we examined our economist students’ ethical attitudes. In this study we try to connect this two themes. Our research question: are there any connection between our students’ ethical judgment and their internet using habits.
