István Nagy

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The aim of the paper is to investigate the bifurcation behavior of the power-factor-correction (PFC) boost converter under a conventional peak current-mode control. The converter is operated in continuous-conduction mode. The bifurcation analysis performed by computer simulations reveals interesting effects of variation of some chosen parameters on the(More)
—This paper reports on the stability analysis of one member of a dual-channel resonant dc–dc converter family. The study is confined to the buck configuration in symmetrical operation. The output voltage of the converter is controlled by a closed loop applying constant-frequency pulsewidth modulation. The dynamic analysis reveals that a bifurcation cascade(More)
  • Gürcan Güle¸sir, Ir A J Mouthaan, M Ak¸sit, L M J Bergmans, A Van Deursen, J C Van De Pol +11 others
  • 2008
(assistant promoter) " The hardest thing to see is what is in front of your eyes. " Acknowledgements The past four years of my life, hence this thesis, has been shaped in the caring and talented hands of Lodewijk Bergmans, my daily supervisor. I benefited from every single intellectual exchange with him. The key ideas presented in this thesis emerged from(More)
AOP languages are continuously evolving, for example (1) pointcut languages are becoming increasingly powerful with respect to the expressiveness of the pointcut language itself, (2) new program properties can be used as a selection criterion in pointcut designators, or (3) new types of program elements can be introduced by means of a crosscut(More)
The goal of this paper is to model and detect composition conflicts related to introductions. Within this context, we identify several categories of composition conflicts. To analyze the causes of these conflicts precisely, we first model the structure of programs as graphs. Next, we model introductions as graph transformation rules. We define explicit(More)
Traditionally in aspect-oriented languages, pointcut designators select joinpoints of a program based on lexical information such as explicit names of program elements. However, this reduces the adaptability of software, since it involves too much information that is hard-coded, and often implementation-specific. We claim that this problem can be reduced by(More)
Our paper discusses the potential use of Web Content Mining techniques for gathering scientific social information from the homepages of researchers. We will introduce our system which seeks [affiliation, position, start year, end year] information tuples on these homepages along with preliminary experimental results. We believe that the lessons learnt from(More)