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Found 5164 publications

Fuzzy flip-flops revisited

Rita Lovassy L. T. Koczy

Publication Name: Advances in Soft Computing

Publication Date: 2007-12-01

Volume: 42

Issue: Unknown

Page Range: 643-652

Description:

J-K flip-flops are elementary digital units providing sequential features/memory functions. Their definitive equation is used both in the minimal disjunctive and conjunctive forms. Fuzzy connectives do not satisfy all Boolean axioms, thus the fuzzy equivalents of these equations result in two non-equivalent definitions, "reset and set type" fuzzy flip-flops (F3) by Hirota & al. when introducing the concept of F3. There are many alternatives for "fuzzifying" digital flip-flops, using standard, algebraic or other connectives. The paper gives an overview of some of the most famous F3-s by presenting their definitions and presenting graphs of the inner state for a typical state value situation. Then a pair of non-associative operators is introduced, and the properties of the respective F3 are discussed. The investigation of possible fuzzy flip-flops is continued by examining Türksen's IVFS, its midpoint values, and by introducing "minimized IVFS" (MIVFS), along with the MIVFS midpoints. © 2007 Springer-Verlag Berlin Heidelberg.

Open Access: Yes

DOI: 10.1007/978-3-540-72434-6_65

Mamdani-type inference in fuzzy signature based rule bases

Katalin Tamás L. T. Koczy

Publication Name: 8th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics Cinti 2007

Publication Date: 2007-12-01

Volume: Unknown

Issue: Unknown

Page Range: 513-525

Description:

The concept of fuzzy signatures might be useful when modeling complex, well structured problems, where one or several components of the structure are determined at a higher level by a sub-tree of other components. The data set belonging to the problem has an arbitrary structure, from which the structure of the data may slightly differ. An aggregation operator is given for each node, for the purpose of modifying the structure, so that data with missing components can be evaluated. Deducing a conclusion from an observation having such a structure is a key issue. In this paper fuzzy signature based rule bases will be introduced, then the generalisation of the well known Mamdani method for signature based rules will be shown step-by-step. Finally, an example of inference on fuzzy signatures will be discussed.

Open Access: Yes

DOI: DOI not available

Arbitrary flux waveform generation in scalar hysteresis measurement

Miklós Kuczmann

Publication Name: Pollack Periodica

Publication Date: 2007-12-01

Volume: 2

Issue: 3

Page Range: 3-14

Description:

The aim of the present paper is to show a simple, but well applicable solution to generate arbitrary waveform of magnetic flux density in scalar hysteresis measurements. The paper deals with a possible realization of eliminating the effect of measurement noise as well. First, the measured signals have been transformed into the frequency domain, and after applying digital filter, the spectrum of the filtered signals have been transformed back to the time domain. The proposed technique results in an accurate noise removal algorithm. The paper illustrates a fast controlling algorithm applying the inverse of the actually measured hysteresis loop, and another proportional one to measure any distorted flux pattern. Developing the mentioned algorithms aims the controlling of a more complicated phenomenon, i.e. measuring the vector hysteresis characteristics. © 2007 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.2.2007.3.1

FORthSIGHT: An aid for visually impaired people

Zoltán Puklus Attila Kürtösi

Publication Name: 8th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics Cinti 2007

Publication Date: 2007-12-01

Volume: Unknown

Issue: Unknown

Page Range: 647-655

Description:

simple and smart text-enlarger application for MS windows operational systems.

Open Access: Yes

DOI: DOI not available

Fuzzy signature and cognitive modelling for complex decision model

T. D. Gedeon L. T. Koczy Kok Wai Wong

Publication Name: Advances in Soft Computing

Publication Date: 2007-12-01

Volume: 42

Issue: Unknown

Page Range: 380-389

Description:

As data is getting more complex and complicated, it is increasingly difficult to construct an effective complex decision model. Two very obvious examples where such a need emerges are in the economic and the medical fields. This paper presents the fuzzy signature and cognitive modeling approach which could improve such decision models. Fuzzy signatures are introduced to handle complex structured data and problems with interdependent features. A fuzzy signature can also be used in cases where data is missing. The proposed fuzzy signature structure will be used in problems that fall into this category. This paper also investigates a novel cognitive model to extend the usage of fuzzy signatures. This Fuzzy Cognitive Signature Modelling will enhance the usability of fuzzy theory in modelling complex systems as well as facilitating complex decision making process based on ill structured information or data. © 2007 Springer-Verlag Berlin Heidelberg.

Open Access: Yes

DOI: 10.1007/978-3-540-72434-6_38

Fuzzy flip-flops and neural nets?

Rita Lovassy L. T. Koczy

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2007-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

J-K flip-flops are elementary digital units providing sequential features/memory functions. Their definitive equation is used both in the minimal disjunctive and conjunctive forms. Fuzzy connectives do not satisfy all Boolean axioms, thus the fuzzy equivalents of these equations result in two non-equivalent definitions, "reset and set type" fuzzy flip-flops (F3) by Hirota & al. when introducing the concept of F 3. The paper gives an overview of some of the most famous F 3-s by presenting their definitions and graphs. An interesting aspect of F3-s might be that they have a certain convergent behavior when one of their inputs (e.g. J) is exited repeatedly. This is true even if the other input (K) is kept at a constant value. The behavior is more versatile if both inputs are given a series of changing values. If J is considered the equivalent of the traditional input of a neuron (with an adder unit applied before J), K might play a secondary modifier's role, or can just be set fix. The paper encourages to the investigation of such possible F3-networks as new alternative types of neural networks. © 2007 IEEE.

Open Access: Yes

DOI: 10.1109/FUZZY.2007.4295435

RFId applications in the supply chain

Tamás Hartványi József Marek

Publication Name: 2007 1st Annual Rfid Eurasia

Publication Date: 2007-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

It is a fact that Radio Frequency Identification technology (RFId) can benefit enterprises and contribute to their integration to supply chains. Several issues emerge concerning technology and economy of introducing and applying the system, especially in small and medium sized businesses. In 2005 Department of Logistics and Forwarding of Széchenyi István University joined the program INTERREG IIIC "REGINSrfld" initiated by the Community of the European Union. The purpose of the program is to examine possibilities of introducing of RFId in small and medium-sized businesses. We completed the project in cooperation with German, Austrian and Italian partners in June 2006.

Open Access: Yes

DOI: 10.1109/RFIDEURASIA.2007.4368132

Progress on joint experiments on small tokamaks

E. Dufkova J. Brotankova M. Berta R. Dejarnac A. Fonseca G. Ramos G. M. Vorobjev A. Talebitaher J. Sentkerestiova B. Tál I. El Chama Neto V. Soldatov E. Sukhov I. Ďuran A. W. Kraemer-Flecken J. Ferreira A. Singh H. Hegazy H. Hegazy A. M. Marques Fonseca P. Khorshid C. R. Gutierrez Tapia L. Ruchko G. Kirnev N. Kirneva E. Del Bosco V. Vershkov A. Malaquias M. Hron B. Kuteev G. Mank M. Gryaznevich L. I. Krupnik V. Budaev A. Ovsyannikov A. Melnikov G. Van Oost M. Sokolov Y. Kuznetsov P. Peleman J. Zajac S. Zoletnik V. Weinzettl J. Stockel

Publication Name: 34th Eps Conference on Plasma Physics 2007 Eps 2007 Europhysics Conference Abstracts

Publication Date: 2007-12-01

Volume: 31

Issue: 1

Page Range: 435-438

Description:

No description provided

Open Access: Yes

DOI: DOI not available

The design of NFC based applications

Balázs Benyó L. Kutor K. Kovács A. Vilmos

Publication Name: Ines 2007 11th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2007-12-01

Volume: Unknown

Issue: Unknown

Page Range: 277-280

Description:

StoLPaN, a pan-European consortium of companies, universities and user groups co-funded by the European Commission (EU), Information Society Technologies (IST) Programme aims to define open commercial and technical frameworks for the remote management of NFC-enabled services on mobile devices. These frameworks will facilitate the deployment of NFC-enabled mobile applications across a wide range of vertical markets, regardless of the phone type and the nature of the services required. This paper introduces the business aspects of the NFC based service development and the technical infrastructure implementing the core of the NFC-enabled services. ©2007 IEEE.

Open Access: Yes

DOI: 10.1109/INES.2007.4283711