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1
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Archives of Acoustics
EN In the present, paper the classical problem of reflection and transmission of a plane acoustic wave is analyzed and solved for nonlinear propagation. Two adjacent media with a plane boundary between them are assumed. The parameters characterizing the properties of the media can be changed stepwise o[...]
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80%
Archives of Acoustics
EN Two characterization methods of piezoelectric materials based on acoustic measurements are presented. Their main objective is to identify the entire set of electromechanical properties of piezoelectric materials from a single sample. In order to characterize new materials like single-crystals with s[...]
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Opto - Electronics Review
EN The new design of the interference band-pass infrared filters is proposed. The analytic expressions for the analysis structure "layer with the high refractive index - interference mirror - layer with the high refractive index" are obtained. The refractive indices optimal and thicknesses of individua[...]
4
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Opto - Electronics Review
EN Liquid crystal cell (LCC) for space-borne laser rangefinder to space mission applications was developed, manufactured and tested under cooperation between Military University of Technology (MUT) in Poland and Vavilov State Optical Institute (Vavilov SOI) in Russia. LCC operates in twisted nematic mo[...]
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Opto - Electronics Review
EN Tamm plasmon-polariton is a surface state or surface wave formed at the boundary between a metal and a dielectric Bragg reflector. In order to directly excite the Tamm plasmon-polaritons with unit transmission, we design a structure of Bragg reflector coated with a metal film. Through the Bloch theo[...]
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Napędy i Sterowanie
2009 R. 11, nr 6 120-127
PL W niniejszym artykule przedstawiono wyniki badań obliczeniowych przeprowadzonych w celu określenia wpływu zmiany sztywności mocowania do ramy nie wirujących mas silnika i UPM na charakter ustalonych i przejściowych procesów w UPM przy wprowadzeniu do UPM typowych eksploatacyjnych wymuszeń. Opisano r[...]
EN The article presents results of analytical investigations made in order to determine the influence of rigidity changes of non-rotating motor and power transmission system mass fastening to frame on steady and transient processes in power transmission system when typical operating input function is [...]
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Optica Applicata
EN We propose an interleaver based on the Mach-Zehnder interferometer with a resonator incorporated in one arm. By using the method of signal flow graph, we get the simple closed-form expressions for transmission of this interleaver. The result indicates that the widths of 0.5 dB passband and 25 dB sto[...]
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Journal of Medical Informatics & Technologies
2011 Vol. 17 219--225
EN The application of new technologies in health units suggests the materialization of an advanced Electronic Health Record as a central axis in medical information management. The aim of present study is to point out the position Information and Communications Technology has in the health field and ho[...]
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Opto - Electronics Review
EN The present article investigates theoretically the refection and transmission through a lossless dielectric slab embedded between two semi-infinite left-handed materials (LHMs) in which the electric permittivity and magnetic permeability are simultaneously negative. The LHM is assumed to be dispersi[...]
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Archives of Acoustics
2015 Vol. 40, No. 2 205--211
EN This article presents an efficient method of modelling acoustic phenomena for real-time applications such as computer games. Simplified models of reflections, transmission, and medium attenuation are described along with assessments conducted by a professional sound designer. The article introduces [...]
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Journal of Theoretical and Applied Mechanics
2017 Vol. 55 nr 2 461--467
EN The paper presents results of analysis of selected dynamic features of an uneven-running two- -wheeled strand transmission. The characteristic features of such type of transmissions is the ability of obtaining variable kinematic and dynamic features by the application of wheels with a noncircular en[...]
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Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska
1998 z. 7 381-386
PL W pracy przedstawiono zastosowanie metody syntezy modalnej z redukcją stopni swobody do analizy własności dynamicznych przekładni . Metoda opiera si ę na dekompozycji przekładni do wzajemnie niesprzężonych podsystemów - wałów z kołami i korpusów połączonych przez łożyska i sprzęgła. Zredukowany mode[...]
EN The modal synthesis method with reduction number DOF for the analysis of the gearbox dynamical properties is presented . The method is based on the gearbox decomposition into mutually uncoupled subsystems - shafts with gears and housing - , joined by bearings and gear couplings . The reduced mathema[...]
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Acta Mechanica et Automatica
PL Przekładnie ślimakowe zawdzięczają swoją popularność dzięki zwartości konstrukcji, dużemu przełożeniu na jednym stopniu, cichobieżności, płynnemu przenoszeniu napędu i względnie dużej trwałości. Dodatkową ich zaletą jest jeszcze to, że mogą pełnić jednocześnie rolę hamulca w ruchu nawrotnym, przekaz[...]
EN Worm gears owe their popularity to their compact structure, large ratios at one degree, silent run, smooth driver transmission and relatively great durability. They have additional quality of simultaneous performing the role of brakes in reversible movement and transferring motion in one direction. [...]
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Optica Applicata
EN Photonic bandgap of photonic crystals (PCs) and the effect of grating diffraction can be used to improve the extraction efficiency of the light from a light-emitting diode (LED). The transmission of light at certain wavelength through periodic sub-wavelength hole arrays in metal films is extraordina[...]
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Journal of KONES
2013 Vol. 20, No. 2 213--219
EN Gears were used in ancient times although in a primitive form. A turning point in the rapid development of gears was in the late nineteenth and early twentieth century. In this time the invention of high-performance tools, highresistant materials and the creation of sufficient, accurate methods of h[...]
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Przegląd Mechaniczny
2008 nr 12 44-48
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Elektronika : konstrukcje, technologie, zastosowania
PL Koncentratory światłowodowe służą do połączenia urządzeń obiektowych z systemami nadrzędnymi za pomocą światłowodów. Gwarantuje to brak zakłóceń i umożliwia łączność na dużo większych odległościach niż w przypadku połączeń kablowych. Nowoczesne koncentratory pozwalają na dużą prędkość transmisji i m[...]
EN Fiber optic concentrators are designed to connect object units with su­pervision systems via fiber optic links. Thus error-free communication at distances much longer than in case of conventional cable links is possible. Modem concentrators allow for high data transmission speeds and may be configur[...]
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Nukleonika
2015 Vol. 60, No. 2 361--366
EN Monte Carlo simulations are very useful for many physical processes. The transport of particles was simulated by Monte Carlo calculating the basic parameters such as probabilities of transmitted–reflected and angular-energy distributions after interaction with matter. Monte Carlo simulations of elec[...]
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Journal of KONES
2015 Vol. 22, No. 1 181--184
EN Overcoming of road impassibility, increase of vehicle passability are the issues that are always actual for the areas with insufficiently developed road network in remote regions of the North, the Far East, Siberia, and also the lack of roads in oil and gas production places and their transportation[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN The present study is concerned with the reflection and transmission of plane waves between two different fluid saturated porous half spaces when longitudinal and transversal waves impinge obliquely at the interface. Amplitude ratios of various reflected and transmitted waves are obtained .The variat[...]
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