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Found 5164 publications

Teamwork in higher education: Teamwork as chance of success

Andrea Bencsik I. Marosi

Publication Name: International Journal of Learning

Publication Date: 2009-01-01

Volume: 16

Issue: 5

Page Range: 167-174

Description:

Education, economy and labour market bear important relationships. The ever faster changes and more important preservation of competitiveness force higher educational institutions and economic players to cooperate more effectively. According to their educational, scientific, knowledge-maker and generative characteristics, universities and colleges receive and play a more active role in the development of the economy. Besides the expansion and multitude of higher education these also contribute to the changes in higher educational roles. In this study, which was conducted among higher educational lecturers, first of all we were looking for the answer whether there is a turn to receive practical experience during daily educational system or in the operation of institutions. Continuing this, in our target groups we intended to find out whether there is change in relationships among lecturers themselves, lecturers and their students, lecturers and economic players. We also wanted to find out if there is any possibilities to work in a team and whether we can find any sign of expectations defined by lecturers and employers of the labour market. Is there any improvement in the way of preparation for living up requirements, such as project-work, language - and entrepreneur abilities? What kind of attitude can be recognized in the theoretical, practical and educational methods? © Common Ground, Ildiko Marosi, Andrea Bencsik, All Rights Reserved, Permissions.

Open Access: Yes

DOI: 10.18848/1447-9494/CGP/v16i05/46260

Developing fuzzy cognitive maps for modeling regional waste management systems

No authors available

Publication Name: Civil-Comp Proceedings

Publication Date: 2009-01-01

Volume: 92

Issue:

Page Range: Unknown

Description:

Sustainable waste management systems necessarily include environmental, economic, social, institutional, legal and technical aspects. As a result of the incompleteness and multiple uncertainties occurring in sustainable waste management systems, we propose the use of fuzzy cognitive maps (FCM) to support the planning and decision making process. It is obvious that uncertainties involved with waste management represent vagueness rather than probability. Fuzzy sets and fuzzy logic are suitable to construct a formal description and a mathematically manageable model of systems and processes with such uncertainties. In the research described in this paper the FCM model of the Gyor RWMS is established and implemented in such a structure that its parameters and weights were flexibly variable. By observation of the model and its time dependent behaviour we determined under what conditions the long-term sustainability of a regional waste management system could be ensured. In this paper, the interpretation of the results obtained by the FCM model for the actual waste management system are presented. © Civil-Comp Press, 2013.

Open Access: No

DOI: DOI not available

Introduction of simulation method and possibilities of standardisation

No authors available

Publication Name: International Workshop on Modeling and Applied Simulation, MAS 2009, Held at the International Mediterranean and Latin American Modeling Multiconference, I3M 2009

Publication Date: 2009-01-01

Volume:

Issue:

Page Range: 224-231

Description:

The paper focuses on the applicability of simulation technology in several hierarchical levels of a production oriented industrial firm. The topic of the paper addresses the discrete event simulation technology which is used to model the material flow and the manufacturing processes in the company. This paper would like to show some practice experience about the industrial introduction steps of manufacturing simulation, as well as our recent research result in the field of standardized simulation model building and data handling procedure.

Open Access: No

DOI: DOI not available

Measurement and simulation of vector hysteresis characteristics

Miklós Kuczmann

Publication Name: IEEE Transactions on Magnetics

Publication Date: 2009-01-01

Volume: 45

Issue: 11

Page Range: 5188-5191

Description:

This paper presents a Preisach model of ferromagnetic hysteresis to simulate the vector hysteresis properties of ferromagnetic materials. Vector behavior has been studied using a single sheet tester with a round shaped specimen at low frequency, and the magnetic flux density vector has been controlled by a digital measurement system. Circular magnetic flux density pattern has been measured. An inverse vector Preisach hysteresis model has been developed and identified by applying the measured data. Finally, the inverse model has been inserted into a finite element procedure through the fixed point technique and the reduced magnetic scalar potential formulation. The applicability of the measurement system as well as the developed model has been proven by comparing measured and simulated results. © 2009 IEEE.

Open Access: Yes

DOI: 10.1109/TMAG.2009.2031072

Production process modeling and planning wih simulation method, mounting process optimisation

János Jósvai

Publication Name: International Workshop on Modeling and Applied Simulation Mas 2009 Held at the International Mediterranean and Latin American Modeling Multiconference I3m 2009

Publication Date: 2009-01-01

Volume: Unknown

Issue: Unknown

Page Range: 240-245

Description:

The paper focuses on the establishment of the production program using simulation technology in a structure, where several products and high amount of variants per product are produced. The topic of the paper addresses the discrete event simulation technology which is used to model the material flow and the manufacturing processes in the production area. This paper would like to show and describe the modelling steps of a complex production system with a lot of products and three different line parts, which are connected with buffers.

Open Access: Yes

DOI: DOI not available

Small and silly? or private pitfall of small and medium-sized enterprises

Andrea Bencsik I. Marosi V. Löre

Publication Name: World Academy of Science Engineering and Technology

Publication Date: 2009-01-01

Volume: 37

Issue: Unknown

Page Range: 482-488

Description:

Knowledge and these notions have become more and more important and we speak about a knowledge based society today. A lot of small and big companies have reacted upon these new challenges. But there is a deep abyss about knowledge conception and practice between the professional researchers and company -life. The question of this research was: How can small and mediumsized companies be equal to the demands of new economy? Questionnaires were used in this research and a special segment of the native knowledge based on economy was focused on. Researchers would have liked to know what the sources of success are and how they can be in connection with questions of knowledge acquisition, knowledge transfer, knowledge utilization in small and medium-sized companies. These companies know that they have to change their behaviour and thinking, but they are not on the suitable level that they can compete with bigger or multinational companies. © 2009 WASET.ORG.

Open Access: Yes

DOI: DOI not available

A unified approach of factor models and neighbor based methods for large recommender systems

Bottyán Németh István Pilászy Gábor Takács Domonkos Tikk

Publication Name: 1st International Conference on the Applications of Digital Information and Web Technologies Icadiwt 2008

Publication Date: 2008-12-30

Volume: Unknown

Issue: Unknown

Page Range: 186-191

Description:

Matrix factorization (MF) based approaches have proven to be efficient for rating-based recommendation systems. In this paper, we propose a hybrid approach that alloys an improved MF and the so-called NSVD1 approach, resulting in a very accurate factor model. After that, we propose a unification of factor models and neighbor based approaches, which further improves the performance. The approaches are evaluated on the Netflix Prize dataset, and they provide very low RMSE, and favorable running time. Our best solution presented here with Quiz RMSE 0.8851 outperforms all published single methods in the literature. ©2008 IEEE.

Open Access: Yes

DOI: 10.1109/ICADIWT.2008.4664342

Improvement the energy storage with ultracapacitor in metro railcar by modeling and simulation

Istvan Szenasy

Publication Name: 2008 IEEE Vehicle Power and Propulsion Conference Vppc 2008

Publication Date: 2008-12-29

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper focuses on the use of modeling and simulation for the renewable energy. An energy storage system for improving performance of electric vehicles is presented. The supercapacitor contributes to the rapid energy recovery associated with regenerative braking in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with minimal loss of energy. Short-distance passenger traffic on electrified lines is a domain where brake energy recuperation might reduce the total energy consumption significantly. In this paper the results of simulation model by Matlab-Simulink for an urbanmetro railcar and the method for reduce the need value of capacitance are presented. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/VPPC.2008.4677664

An application of the greedy heuristic of set cover to traffic checks

Pál Pusztai

Publication Name: Central European Journal of Operations Research

Publication Date: 2008-12-01

Volume: 16

Issue: 4

Page Range: 407-414

Description:

Let us suppose that X is a given, finite, not empty set and F is a given collection of subsets of X such that their union equals X, in other words F covers X. Set cover is the problem of selecting as few as possible subsets from F such that their union covers X. Max k-cover is the problem of selecting k subsets from F such that their union has maximum cardinality. Both problems are NP-hard. There is a polynomial time greedy heuristic that iteratively selects the subset from F that covers the largest number of yet uncovered elements. We implemented this greedy algorithm to support the planning of a checking system that is aimed to check the vehicles in a road network. We would like to answer such questions: - How many and which links are sufficient to check a given percentage of all traffic flow? - What percentage of traffic can be checked with given links? This paper defines the necessary data and basic knowledge, gives algorithms to answer the previous questions and also shows the results of an implementation in a road network that contains about 11,000 junctions, 3,000 origin-destination junctions and 26,000 links. © 2008 Springer-Verlag.

Open Access: Yes

DOI: 10.1007/s10100-008-0067-x