Search results for "Attenuation coefficient"

showing 2 items of 62 documents

On a Fractional in Time Nonlinear Schrödinger Equation with Dispersion Parameter and Absorption Coefficient

2020

This paper is concerned with the nonexistence of global solutions to fractional in time nonlinear Schr&ouml

fractional in time nonlinear Schrödinger equationPhysics and Astronomy (miscellaneous)General MathematicsMathematics::Analysis of PDEs01 natural sciencesSchrödinger equationsymbols.namesakeSettore MAT/05 - Analisi Matematicaglobal solutionDispersion (optics)absorption coefficientComputer Science (miscellaneous)Absorption (logic)0101 mathematicsNonlinear Schrödinger equationMathematical physicsPhysicslcsh:Mathematics010102 general mathematicsMathematics::Spectral Theorylcsh:QA1-939010101 applied mathematicsNonlinear systemChemistry (miscellaneous)Attenuation coefficientsymbolsdispersion parameterSymmetry
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Power Line Communication in Medium Voltage Systems: Characterization of MV Cables

2008

The aim of this paper is to illustrate the development of a theoretical and experimental study on the characterization of medium voltage (MV) cables in the frequency range 25-200 kHz. Two transmission line configurations, line-ground and line-line, were considered in order to evaluate the main parameters, such as the characteristic impedance and the attenuation constant alpha. A simplified model of the line-ground configuration is proposed which allows one to evaluate the characteristic impedance and the attenuation constant by means of geometrical dimensions. The model was verified by experimental measurements on commonly used MV cables, RG7H1R, with an aluminium core of different sections…

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