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Annales Societatis Mathematicae Polonae. Seria 1: Commentationes Mathematicae
2004 nr spec. 215-227
EN Necessary and sufficient conditions in order that Orlicz-Bochner sequence spaces equipped with Luxemburg norm have the uniform [lambda] property are given.
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Commentationes Mathematicae
2013 Vol. 53, No. 2 147--162
EN In this paper,we give necessary and sufficient conditions in order that a point u∈S(l(Φ)) is a k-extreme point in generalized Orlicz sequence spaces equipped with the Luxemburg norm, combing the methods used in classical Orlicz spaces and new methods introduced especially for generalized [...]
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Journal of Theoretical and Applied Mechanics
2017 Vol. 55 nr 4 1167--1179
EN The locally resonant (LR) phononic crystal double panel structure made of a two-dimensional periodic array of a two-component cylindrical LR pillar connected between the upper and lower plates is proposed, and the bandgap properties of the structure are investigated theoretically in this paper. The [...]
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Journal of Power of Technologies
2017 Vol. 97, nr 4 314--326
EN ANSYS FLUENT 14 supplied the CFD tools used in the numerical calculation of rotating detonation combustion. During calculations, various fuel injection methods and configurations of combustion chamber were applied in an attempt to obtain stable and correct detonation propagation results in a separat[...]
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Archives of Acoustics
2017 Vol. 42, No. 4 735--742
EN This paper introduces the concept of semi-infinite phononic crystal (PC) on account of the Infinite periodicity in x-y plane and finiteness in z-direction. The plane wave expansion and finite element methods are coupled and formulized to calculate the band structures of the proposed periodic elastic[...]
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Optica Applicata
2011 Vol. 41, nr 4 825--839
EN To deal with illumination variations in face recognition, a novel two-stage illumination normalization method is proposed in this paper. Firstly, a discrete cosine transform (DCT) is used on the original images in logarithm domain. DC coefficient is set based on the average pixel value of all the wi[...]
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Optica Applicata
EN An optimal design of two dimensional (2D) hexagonal photonic bandgap (PBG) resonating micro-optical defect cavity on IV-VI lead salt material has been carried out. The nature of both the transverse electric (TE) and transverse magnetic (TM) band structure for the electromagnetic waves in the periodi[...]
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Eksploatacja i Niezawodność
2017 Vol. 19, no. 2 211--219
PL Zmęczeniowe pęknięcia podpowierzchniowe, stanowiące jedną z głównych przyczyn uszkodzeń łożysk tocznych powodowanych okresowym działaniem sił kontaktowych i zewnętrznych obciążeń impulsowych, mogą prowadzić do katastrofalnych awarii maszyn wirnikowych. Badania metod wykrywania podpowierzchniowych pę[...]
EN As one of major failure modes of roller bearings due to periodic contact forces and external impulse loads, subsurface cracks caused by fatigues may produce catastrophic failures of rotating machines. Investigations of subsurface crack detection methods for roller bearings are very useful for mainte[...]
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Management and Production Engineering Review
EN It is a core content of enterprise performance research evaluating and comparing enterprise performance in dynamic environment. In allusion to this problem, a variety of enterprise performance assessment methods and indexes systems are proposed. Data envelopment analysis (DEA) is a kind of effective[...]
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Przegląd Elektrotechniczny
2016 R. 92, nr 4 10--13
PL Obliczenia reaktancji SCSFCL wymaga użycia nieliniowego modelu rdzenia stalowego zarówno dla wzbudzenia stałoprądowego jak i zmiennoprądowego. W artykule przedstawiono uproszczoną metodę obliczania reaktancji zakładając, że w obszarze dużego nasycenia krzywa B-H jest prawie linią prostą. Jako przeni[...]
EN Generally, the computation of the steady-state reactance of the SCSFCL employs the nonlinear steel core model with both the DC and AC excitation. Noting the deep saturation region of the B-H curve is nearly a straight line, a simplified method is presented in this paper. The slope of the deep satura[...]
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Polish Journal of Ecology
2015 Vol. 63, nr 3 365--376
EN Forest soil respiration (SR) has become a vital issue in global change ecology because of its critical role in global warming processes. However, SR remains the least understood component of the terrestrial carbon cycle because of its high spatial-temporal variability, inaccessibility of the soil su[...]
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Fibres & Textiles in Eastern Europe
2013 Nr 4 (100) 112--117
PL Numeryczna symulacja elastycznej deformacji ciała ludzkiego, dynamicznego ciśnienia i rozkładu przesunięć są krytycznymi czynnikami komfortu i optymalnych rozwiązań ciśnieniowych wyrobów odzieżowych. Przedstawiono analityczną metodę symulacji ciśnień dynamicznych i przesunięć w górnej części męskich[...]
EN Numerical simulation of elastic human body deformation and dynamic pressure and displacement distribution are critical for pressure comfort and optimal design of apparel products. This paper demonstrates an analytical method for simulating dynamic pressure and displacement at the top part of men’s s[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
2018 Vol. 66, nr 5 687--698
EN This study investigates a digital control system which is used in bearingless permanent magnet synchronous motors (BPMSMs). Compared with traditional permanent magnet synchronous motors, a BPMSM is characterized by higher speed and no mechanic friction. Therefore, the application value of the latter[...]
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Polish Journal of Chemistry
2001 Vol. 75, nr 11 1785-1789
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