We study a series-parallel repairable system consisting of three units with multiple vacations of a repairman. We first show that all points on the imaginary ax
An investigation of origins of the quantum mechanical momentum operator has shown that it corresponds to the nonrelativistic momentum of classical special relat
Nowadays in laboratories and in industries, distribution of solar cells sizes could be very large, hence;for the first time it is rather difficult to compare ph
We compare several approximations for second derivatives with Smoothed Particle Hydrodynamics (SPH). A first-order consistent approximation, derived from the ze