In the presence of an electromagnetic background plane-wave field, electron, positron, and photon states are not stable, because electrons positrons emit photons decay into electron-positron pairs. This particle leads to exponential damping term in probabilities single nonlinear Compton scattering Breit-Wheeler pair production. this paper we investigate analytically numerically production inclu...

Mobile technologies and more precisely apps have disrupted technology scenario. Bring your own application (BYOA) is a new trend that has emerged after the “bring your own device” (BYOD) vogue. However, and in spite of its intrinsic benefits, the trend presents also several caveats and Enterprise app stores are seen as a way to tackle these risks. In this paper, authors present ModEAS, a system...

Social reformers such as John Stuart Mill and John Dewey have long expressed concern about a tension between democratic principles and organizational practices that appear undemocratic.' More recently, a substantial body of academic literature advocating changes in organizations to make them more democratic has been produced.2 Change has been advocated on a variety of normative grounds. In a no...

in this paper, surface and piezoelectric effects on the vibration behavior of nanowires (nws) are investigated by using a timoshenko beam model. the electric field equations and the governing equations of motion for the piezoelectric nws are derived with the consideration of surface effects. by the exact solution of the governing equations, an expression for the natural frequencies of nws with ...

statins are most effective pharmacologically agents to decrease total plasma cholesterol level by competitive inhibition of hmg-co a reductase. apart from the well-known ldl and cholesterol lowering effect, statins have been postulated to exert other beneficial effects also called pleotropic or non-lipid effects. better understanding of various pleotropic effects of statins has prompted a new s...

nowadays, customers ask for high quality products with less cost. so, the organizations such as iran transfo rey are looking for a solution to survive longer. implementation of lean production can lead the company to its target. the main goal of this research is evaluating the readiness of iran transfo rey co. for performing the lean production system through dimensional analysis model. in this...