Abstract I consider black body radiation. The wall of the exchanges photons with radiation field in equilibrium, therefore a common temperature Planck’s law. underlying process consists creation and annihilation photons. want to present an alternate model motions, where small steps positive negative direction, not zero mean. detection storing restoring packages energy. get analogue law, emerges...

The forward diffusion equation for gene frequency dynamics is solved subject to the condition that the total probability is conserved at all times. This can lead to solutions developing singular spikes (Dirac delta functions) at the gene frequencies 0 and 1. When such spikes appear in solutions they signal gene loss or gene fixation, with the "weight" associated with the spikes corresponding to...

In the current research with novel first and second differentiations of a yield function, Euler forward along with Euler backward with its consistent elastic-plastic modulus are newly implemented in finite element program in rate-independent plasticity. An elastic-plastic internally pressurized thick walled cylinder is analyzed with four famous criteria including both pressure dependent and ind...

New LS and SVD based methods for the estimation of frequencies of complex sinueoids in white noise are presented. The methods are based on a new prediction problem that has some very useful properties leading to algorithms that have considerably reduced complexity. Thie is achieved without practically sacrificing any performance with respect to existing methods that are based on the Forward Bac...

The present study aims to model systematic risk using financial and accounting variables. Accordingly, the data for 174 companies in Tehran Stock Exchange are extracted for the period of 2006 to 2016. First, the systematic risk index is estimated using the ARFIMA-FIGARCH model. Then, based on the research background, 35 affective financial and accounting variables are simultaneously used with t...