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BIFURCATIONS IN A HUMAN MIGRATION MODEL OF SCHEURLE-SEYDEL TYPE-II: ROTATING WAVES
Kovacs, Sandor 한국전산응용수학회 2004 Journal of applied mathematics & informatics Vol.16 No.1
This paper treats the conditions for the existence of rotating wave solutions of a system modelling the behavior of students in graduate programs at neighbouring universities near each other which is a modified form of the model proposed by Scheurle and Seydel. We assume that both types of individuals are continuously distributed throughout a bounded two-dimension spatial domain of two types (circle and annulus), across whose boundaries there is no migration, and which simultaneously undergo simple (Fickian) diffusion. We will show that at a critical value of a system-parameter bifurcation takes place: a rotating wave solution arises.
Standards-Based Worldwide Semantic Interoperability for IoT
Kovacs, Erno,Bauer, Martin,Jaeho Kim,Jaeseok Yun,Le Gall, Franck,Mengxuan Zhao Institute of Electrical and Electronics Engineers 2016 IEEE communications magazine Vol.54 No.12
<P>Global IoT services (GIoTS) are combining locally available IoT resources with cloud-based services. They are targeting worldwide services. GIoTS require interoperability between the locally installed heterogeneous IoT systems. Semantic processing is an important technology to enable data mediation as well as knowledge-based processing. This article explains a system architecture for achieving worldwide semantic interoperability using international standards such as oneM2M and the OMA NGSI-9/10 context interfaces (as used in the European Future Internet Platform FIWARE). Semantics also enables the use of knowledge-based semantic processing agents. Furthermore, we explain how semantic verification enables the testing of such complex systems.</P>
Bifurcations in a human migration model of Scheurle-Seydel type--II: Rotating waves,
Sandor Kovacs 한국전산응용수학회 2004 Journal of applied mathematics & informatics Vol.16 No.-
This paper treats the conditions for the existence of rotating wave solutions of a system modelling the behavior of students in graduate programs at neighbouring universities near each other which is a modified form of the model proposed by Scheurle and Seydel. We assume that both types of individuals are continuously distributed throughout a bounded two-dimension spatial domain of two types (circle and annulus), across whose boundaries there is no migration, and which simultaneously undergo simple (Fickian) diffusion. We will show that at a critical value of a systemparameter bifurcation takes place: a rotating wave solution arises.
SPATIAL INHOMOGENITY DUE TO TURING BIFURCATION IN A SYSTEM OF GIERER-MEINHARDT TYPE
Sandor, Kovacs 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.11 No.1
This paper treats the conditions for the existence and stability properties of stationary solutions of reaction-diffusion equations of Gierer-Meinhardt type, subject to Neumann boundary data. The domains in which diffusion takes place are of three types: a regular hexagon, a rectangle and an isosceles rectangular triangle. Considering one of the relevant features of the domains as a bifurcation parameter it will be shown that at a certain critical value a diffusion driven instability occurs and Turing bifurcation takes place: a pattern emerges.
Critical Remarks on the State of Religions and Religious Studies in Hungary
( Abraham Kovacs ) 서울대학교 종교문제연구소 2014 종교와 문화 Vol.0 No.26
This paper deals with two major themes. First, it offers a survey of the religious landscape of Hungary with a focus on politics, religion and multiculturalism. In this part the legal status of religions in Hungary will be explained then, Christian religious education and the issue of ‘education about religion’ will be critically discussed. The study sheds lights on how religious tolerance was valued as a treasured Hungarian cultural heritage. Out of this unique in European tradition religious tolerance flourished in Hungary. Some critical remarks are made about how nationalism created a myth of a Christian Hungary for patriotic politicians. It is argued that Hungary is a secular country with a strong presence of Christian culture. However, it is also pointed out that devout religious practices are at low ebb which politicians often dismiss. Through some selected examples it is shown why ‘education about religion’ is vital for the country. This leads us to the second part of the paper where the state of Religious Studies in Hungary is discussed and some suggestions are made about its possible contribution to the development of ‘education about religion’. Here the study presents an overview of three major circles influencing the landscape of the Study of Religions. The current situation of Religious Studies at Hungarian universities is also concisely described to demonstrate that Hungarian scholarship has a good potential to train future teachers to teach the public about religions. It is argued that ‘education about religion’, which is not to be confused with ‘religious education’ (hittan, vallasoktatas), is vital to promote religious tolerance for building up a post-modern society.