نتایج جستجو برای: Transmission coefficient

تعداد نتایج: 410469  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعت آب و برق (شهید عباسپور) - دانشکده مهندسی برق و کامپیوتر 1392

abstract according to increase in electricity consumption in one hand and power systemsreliability importance in another , fault location detection techniqueshave beenrecentlytaken to consideration. an algorithm based on collected data from both transmission line endsproposed in this thesis. in order to reducecapacitance effects of transmission line, distributed parametersof transmission line...

Journal: :Transactions of the Japan Society of Mechanical Engineers 1967

2005
M. Kawaguchi T. Fukushima K. Miyazaki

The relationships between the transmission coefficient and the cure depth were evaluated on eight commercially available light-activated resin composites. The determination of transmission coefficient was carried out by the use of a radiometer for various shades of the resin composites. The transmission coefficient, ranging from 0.042 to 0.263, wasdependent upon the shade of the resin. There wa...

Barmar, Mohammad , Farhang Dehghan, Somayeh , Hajizadeh, Roohalah , Jonidi Jafari, Ahmad , Khavanin, Ali ,

Introduction: Nowadays multiple techniques have been developed to noise control. One the most important way is the control based on sound absorption and insulation. The purpose of current study was to improve the acoustic properties of soft polyurethane foam regarding combined sound absorption and insulation characteristics. Materials and Methods: Polyacrylonitrile and polyvinylidine fluoride ...

Journal: :iranian journal of science and technology (sciences) 2013
u. basu

scattering of an incoming wave train by a discontinuity at the upper surface of the ocean over a uniform porous bottom of finite depth is considered here in the framework of linearized water wave theory. by employing residue calculus method, the reflection and transmission coefficient are obtained. these coefficients are computed numerically for different values of the porosity parameter g and ...

Journal: :Engineer: Journal of the Institution of Engineers, Sri Lanka 2016

Journal: :پژوهش فیزیک ایران 0
رضا پورایمانی r puorimani university of arakدانشگاه اراک مرضیه مظلوم شهرکی m mazloom shahraki university of arakدانشگاه اراک

in this work, 137cs activity concentration of soil in five depths and in six meteorology stations in terms of bq/kg has been measured. for each thirty soil's samples, parameters such as kind of soil, density and hydraulic coefficient of transmission were determined. correlation coefficient between 137cs activity concentration and raining average, hydraulic coefficient of transmission and s...

Journal: :SIAM J. Math. Analysis 2011
Michael Hitrik Katsiaryna Krupchyk Petri Ola Lassi Päivärinta

A reduction of the transmission eigenvalue problem for multiplicative sign-definite perturbations of elliptic operators with constant coefficients to an eigenvalue problem for a non-selfadjoint compact operator is given. Sufficient conditions for the existence of transmission eigenvalues and completeness of generalized eigenstates for the transmission eigenvalue problem are derived. In the trac...

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