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Demonstratio Mathematica. Warsaw Technical University Institute of Mathematics
EN The class of bipartite pseudo-BL algebras (denoted by BP) and the class of strongly bipartite pseudo-BL algebras (denoted by BP0) are investigated. We prove that the class BP0 is a variety and show that BP is closed under subalgebras and arbitrary direct products but it is not a variety. We also stu[...]
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Optica Applicata
EN A new kind of one-dimensional (1D) photonic crystal (PC) filter is reported in this paper. This kind of a filter is a dimerlike heterostructure constructed by two 1D dielectric and magnetic PCs. Compared with traditional filters based upon 1D pure dielectric PCs, the new one has the advantage of ext[...]
3
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Journal of Telecommunications and Information Technology
2002 nr 1 48-51
EN The forward-backward autoregressive (AR) model is applied to extract time signatures generated by the FDTD algorithm. It is shown that using simple techniques of model parameters selection one is able to reduce the model complexity for low and medium Q circuits.
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Journal of Mathematics and Applications
2010 Vol. 32 67-74
EN We introduce the notions of a positive implicative LI-ideal and an associative LI-ideal in a lattice implication algebra and discuss some of their properties. Connections to related classes are investigated and equivalent conditions for both a positive implicative LI-ideal and an associative LI-idea[...]
5
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Elektro Info
2011 nr 7-8 24-29
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Measurement Automation Monitoring
EN Abstract: The paper presents a new measurement method for checkweighers, where the measurement result is obtained by solving a simple optimization problem. The method assumes that the mass of constant geometry and a small masses spread is measured. The measurement accuracy changes as a function of [...]
7
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Journal of KONES
EN In the models of regeneration of diesel particulate filters the reaction rate of soot oxidation is assumed to be of Arrhenius type temperature dependence. In that form reaction rate has two characteristic coefficients: an activation energy and pre-exponential coefficient. The activation energy deter[...]
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ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
EN This article is devoted to the analysis from the viewpoint of accuracy allocation of contour points, and maintaining information about the distribution of non-derivative elements. In this article is researched the edge enhancement algorithms such as Prewitt, Sobel, Laplacian, Kirsch and evaluated th[...]
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Computer Applications in Electrical Engineering
2012 Vol. 10 194--204
EN Review of the filter structures and spectral analysis algorithms was done. Digital filters allow filtering the speed signal in control loop of direct drive with a mechanical resonance. The analogue filter equations were transformed into digital filters to enable tune them in real time. Spectral anal[...]
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Opto - Electronics Review
EN The liquid crystal (LC) filters with hybrid, circular-planar, and circular-homeotropic alignments of the LC layer have been analysed in detail. The exploited alignment of the LC layer assures the uncommon polarizing properties of the filter. We manage to observe that transmissions in such a filter c[...]
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Electrical Power Quality and Utilisation. Journal
EN The installation of electronic devices, digital equipment, and nonlinear loads in both industrial and domestic applications have dramatically increased in recent years, which in turn increased the level of harmonics in the system. Harmonic distortion is widely recognized as a significant cause of da[...]
12
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Demonstratio Mathematica. Warsaw Technical University Institute of Mathematics
EN The concepts of I-convergence and I-Cauchy condition are a generalization of statistical convergence and statistical Cauchy conditions and are dependent on the notion of the ideal I of subsets of the set N of positive integers. In this paper, we shall introduce two new notions of I-uniform continuit[...]
13
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Elektro Info
2003 nr 6 5--10
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Bulletin of the Polish Academy of Sciences. Mathematics
EN We show that every filter F on ω, viewed as a subspace of 2ω, is homeomorphic to F2. This generalizes a theorem of van Engelen, who proved that this holds for Borel filters.
15
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Journal of Telecommunications and Information Technology
2017 nr 3 107--112
EN A highly selective filter is designed, working at 1.55 μm and having a 3-dB bandwidth narrower than 0.4 nm, as is required in Dense Wavelength Division Multiplexed systems. Different solutions are proposed, involving photonic crystals made rectangular- or circular-section dielectric rods, or else of[...]
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Optica Applicata
EN In this paper, we consider a hybrid photonic crystal symmetrically deformed (Bg5/Cu3/Bg5) consisting of the third generation of the copper mean sequence (Cu3), sandwiched between two Bragg mirrors at the fifth generation (Bg5). Our system realiz[...]
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Optica Applicata
EN The weighting factors method and the response surface methodology are used to achieve multi-objective optimization of a dielectric layer photonic crystal filter. The size of period and the transmission quantity are considered simultaneously and a multi-objective optimization model of filter is estab[...]
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ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
EN The achieved discrete trigonometric transform allows building of adaptive filters to suit their area of application. By varying the phase shift can be achieved improved quality of source data recovery in case the frequency coefficients undergo distortion. This transformation is well manifested itsel[...]
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Przegląd Elektrotechniczny
PL W artykule przedstawiono adaptacyjny dobór współczynnika wzmocnienia filtru na podstawie bieżących pomiarów. Przeprowadzone badania symulacyjne zrealizowano dla zanieczyszczonej biochemicznie rzeki opisanej modelem matematycznym w postaci równań różniczkowych zwyczajnych. Zamieszczono rezultaty eksp[...]
EN This paper presents an adaptive adjust the gain of the filter coefficient based on current measurements. The study was carried out for the simulation of polluted rivers biochemically described mathematical model in the form of ordinary differential equations. Included the results of numerical experi[...]
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Journal of Telecommunications and Information Technology
2001 nr 3 3-14
EN Envelope constrained filter design is concerned with the time domain synthesis of a filter whose response to a specified input signal stays within prescribed upper and lowe bounds and in addition has minimal noise enhancement. In many practical applications, a "soft" approach, such as least mean squ[...]
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