A method is proposed to estimate reliability parameters of products whose life satisfy exponential distribution model, under the definite time censorship longevity test with stochastic lose and stochastic add.

The Effects of Taxation in a Stochastic Growth Model;

Based on the fact that there are unnegligible stochastic effects in the compensation of gain for the loss in the soliton communication system, the influence is studied of stochastic gain on the soliton transmitting system.

In this paper, the influence of stochastic gain on the amplified spontanesous emission noise is studied, and the variance of soliton time jitter is got by using the adjoint operator method.

Optimization growth orbit of capital and consumption and the expression of stochastic growth rate are abtained under different utility functions by establishing stochastic economic growth model.