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Found 6289 publications

The willingness and preparedness of local governments in Ap Vojvodina/Serbia to grip and use development funds of the European Union

Imre Nagy András Ricz

Publication Name: Deturope

Publication Date: 2017-01-01

Volume: 9

Issue: 2

Page Range: 118-128

Description:

EU funds that are available in Serbia are modest both in volume and number, since Serbia received preaccession status only in 2014. Before that, it was only a potential pre-accession country on the external border of the European Union. From the five components of IPA (2007-2013) Serbia could have utilised only the first two components in the pre-accession process: building of EU institutions (EXCHANGE IIV, Regional Socio-Economic Development Programme) and enhancing cross-border cooperation As a conclusion we can say that although substantial sums were invested from the above mentioned resources into the economy of Vojvodina for its development, the main indicator - the GDP - has been increasing only slightly, while these projects have no effects on decreasing unemployment. In the overall economic situation, unemployment is primarily decreased by emigration, in which Vojvodina Hungarians take part at a rate above the average compared to their headcount, thus decreasing the economic power of the community through emigration.

Open Access: Yes

DOI: 10.32725/det.2017.016

Land-use zone estimation in public transport planning with data mining

Richard Horvath Balázs Horváth Viktor Nagy

Publication Name: Transportation Research Procedia

Publication Date: 2017-01-01

Volume: 27

Issue: Unknown

Page Range: 1050-1057

Description:

Nowadays, data sets are spreading continually, generated by different devices and systems. The modern GPS based tracking systems and the electronic tickets are producing lots of data, and we could use them, for improving the service level. These data are processable with the modern devices and methods, and we can use them for obtaining information. Thanks to the spread of data mining, these tools are not appearing only in marketing research, but also in the most various kind of scientific areas and they are advertising a new scientific revolution. Although the importance of these data sources is essential it is not widespread in transport planning except in some specific areas. The smart card systems store the number of boarding passengers and in some cases also the alighting values. From the passengers' boarding and alighting information in a stop point we can create a time series, which shows the behavior type of the given stop points presented on graphic curves. With the help of different clustering and classification processes, these curves can be turned into groups and we can observe these groups of stop points which are defining separated zones. This is the basic step in transport modelling and the zones were determined by manual methods usually. In this paper we examine clustering and classification methods compared to each other and check the usability of different distance measurement techniques. This paper shows the usage of these methods in public transportation and presents the background of this kind of zone distribution technic.

Open Access: Yes

DOI: 10.1016/j.trpro.2017.12.145

A fuzzy information propagation algorithm for social network based recommender systems

Gergely Posfai Gabor Magyar L. T. Kóczy

Publication Name: Advances in Intelligent Systems and Computing

Publication Date: 2017-01-01

Volume: 462

Issue: Unknown

Page Range: 35-49

Description:

Web-based services that have become prevalent in people’s everyday life generate huge amounts of data, which makes it hard for the users to search and discover interesting information. Therefore, tools for selecting and delivering personalized contents for users are crucial components of modern web applications. Social recommender systems suggest items to users assuming the knowledge of the users’ social network. This new approach can alleviate the common weaknesses of traditional recommender systems, which completely ignore the users’ personal relationships in the recommendation process. In this paper, a social network based fuzzy recommendation technique is presented, which propagates information through the users’ social network and predicts how users would probably like a certain product in the future. Experimental results on a public dataset show that the proposed method can significantly outperform popular and widely used recommendation system methods in terms of recommendation coverage while maintaining prediction accuracy and performs especially well for cold start users, that have only rated a few items or no item at all previously.

Open Access: Yes

DOI: 10.1007/978-3-319-44260-0_3

Modeling of railway transition zones under dynamic loading

Edina Koch Péter Hudacsek

Publication Name: Icsmge 2017 19th International Conference on Soil Mechanics and Geotechnical Engineering

Publication Date: 2017-01-01

Volume: 2017-September

Issue: Unknown

Page Range: 1369-1372

Description:

Transition zones of railway tracks are intended to provide a smooth transition of the riding train, minimizing the effect of the discontinuities that exist along the track. When a train rides from an embankment onto a stiff structure, such as a bridge, tunnel or culvert, an abrupt change in the support stiffness occurs possibly inducing differential settlements. This in long term can yield to the degradation of the tracks and foundations in the transition zones. The differential settlement is especially problematic for high speed rail infrastructure as the "bump" at the transition is accentuated at high speeds. A number of techniques have been proposed or implemented to provide gradual stiffness transition at the problem zones, such as methods to ensure gradually changing pad stiffness, application of long sleepers or installation of auxiliary rails in the transition zone. The problems associated with the transition zones require a complex analysis. For efficient modeling of the mechanisms resulting in gradual line deteriorations in the transition zones the understanding of the 3D and dynamic effects associated with the problem seems to be essential. To enhance our understanding regarding the problem a 3D numerical model has been developed and presented for time domain analysis.

Open Access: Yes

DOI: DOI not available

Fast meshless techniques based on the regularized method of fundamental solutions

Csaba Gáspár

Publication Name: Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Publication Date: 2017-01-01

Volume: 10187 LNCS

Issue: Unknown

Page Range: 334-341

Description:

A regularized method of fundamental solutions is presented. The method can handle Neumann and mixed boundary conditions as well without using a desingularization technique. Instead, the approach combines the regularized method of fundamental solutions with traditional finite difference techniques based on some inner collocation points located in the vicinity of the boundary collocation points. Nevertheless, the resulting method remains meshless. The method avoids the problem of singularity and can be embedded in a natural multi-level context. The method is illustrated via a numerical example.

Open Access: Yes

DOI: 10.1007/978-3-319-57099-0_36

Failure analysis of aluminum - Ceramic composites

Imre Fekete Ibolya Zsoldos István Kozma

Publication Name: Materials Science Forum

Publication Date: 2017-01-01

Volume: 885

Issue: Unknown

Page Range: 286-291

Description:

The increasingly widespread use of syntactic metal foams is due to their excellent energy absorbing characteristics. Several research groups deal with developing methods that can further improve this characteristic. Several literature analyses have been devoted to the effects of materials selection, cell size and wall thickness of the reinforcing element on the compression strength. In this work an in situ test necessary for the modeling of the failure process introduced. The aluminumceramic composite foams were cyclically upset. The geometry of the test specimen was reconstructed at a certain point of the compression test by μCT technology and digital image analysis. The failure process was characterized by volume change, by the number of broken shells and by the formation of shear plane as a function of the deformation.

Open Access: Yes

DOI: 10.4028/www.scientific.net/MSF.885.286

Types of development paths and the hierarchy of the regional centres of Central and Eastern Europe

Ádám Páthy

Publication Name: Regional Statistics

Publication Date: 2017-01-01

Volume: 7

Issue: 2

Page Range: 124-147

Description:

After the rapid transformation period of the 1990s, determined predominantly by the crisis effects of a radical political-economic transition, the reshaping of the spatial structure and urban networks slowed in the post-socialist countries of Central and Eastern Europe. The spillover effects of the market economy transition are fad-ing, and cannot be generalized. Instead, other factors, such as involvement in global processes and the creation and exploitation of new types of synergies, become the main drivers of the differ-entiation and development in the urban system. This study attempts to explore the framework and specifics of this new environment by exam-ining resources for development in the Eastern and Central European regional centres.

Open Access: Yes

DOI: 10.15196/rs070202

Parallelization of numerical examination of nonlinear systems using maple

F. Hajdu G. Y. Molnarka

Publication Name: Civil Comp Proceedings

Publication Date: 2017-01-01

Volume: 111

Issue: Unknown

Page Range: Unknown

Description:

In this work we present possibilities of the parallelization of numerical examination and simulation of nonlinear systems, especially creating phase-plane diagrams in parallel. For construction of such diagrams Maple was used because it provides algorithms for solving differential equations and two models for parallelization. These are the Task programming model and the Grid programming model. The paper describes the development, the test and the comparison of the parallel programs created according to the two parallelization models. Even using a simple desktop with low number of processors a relative good speedup with a good efficiency could be achieved in both cases. It was also examined how the problem size affects the speedup and the efficiency.

Open Access: Yes

DOI: DOI not available

Overcoming emotional barriers for tacit knowledge sharing

Viktoria Magyar-Stifter

Publication Name: Proceedings of the European Conference on Knowledge Management Eckm

Publication Date: 2017-01-01

Volume: 2

Issue: Unknown

Page Range: 617-623

Description:

I concluded from previous exploratory research that there is currently no company in Hungary that has not heard of knowledge management. In fact, many are able to isolate tacit and explicit knowledge, while consciously seeking to share only the latter. Answers to questions regarding objections to sharing tacit knowledge are that there is no time for it, not enough money for it, or the classic "the employees are all just gossip, if there are more of them" response. There are a wide range of barriers to knowledge transfer in the literature as explanations as to why the transfer of tacit knowledge is not encouraged, in addition to "our organisation is not ready for knowledge sharing". However, what is overlooked is that one of the conditions for success during knowledge sharing is a human factor: staff attitude. After all, the sharing of tacit knowledge is voluntary in most cases and thus stems from the intrinsic motivation of participants. The organisation is able to influence employees to have a positive attitude about knowledge transfer and motivate them to satisfy higher order needs. If an organisation intends to increase employee satisfaction, they can promote cooperation and team tasks and communicate a clear vision, that is, emotional intelligence. In this paper, I deal only with the latter in detail. What kind of individual and group capabilities should companies have to build their competitive advantage based on the knowledge of individuals? What is more, I wish to project that companies need to operate more successfully. How can company's employees' satisfaction, positive attitude, and work efficiency be increased for better performance. How can emotional intelligence be improved for more success? To answer these questions, I intend to examine the emotional competences of companies in North Transdanubia with empiric, quantitative and qualitative methods, a basket of typical competences that are characteristic of emotionally intelligent companies, and its effect on a company's knowledge transfer processes. I intend to prove the relationship of factors involved in the design of corporate emotional intelligence by investigating hypotheses and then placing the established model within the known family of emotional intelligence models. Finally, I will also investigate the knowledge transfer processes of emotionally intelligent companies.

Open Access: Yes

DOI: DOI not available