After studying the culture system as an ecosystem,the author pointed out that some phenomena making the system imbalance also occur in ecosystem of culture such as culture resource shortage and culture environment pollution,suggested that culture ecology safeguard section should be established to realize sustainable development.

The article tends to focus on Albee s unique way of demonstrating his metaphysical thinking in terms of (1) the pre-setting of a "perfect system" , followed by its degrading into an "off-balanced system" ; (2) th.

Maintenance theory and optimal design for a compound system under a statistical equilibrium state;

Modeling and Simulations of RED Under Statistical Equilibrium;

Based on the modern combat environment and air attack mode that confronted the ground-air missile weapon system, combined with the fire theory of the ground-air missile firepower unit, the queuing model of the combat effectiveness analysis is established, and the statistical equilibrium of the model is analyzed emphatically.

The unemployment statistics should reflect the actual situation of unemployment so to provide basis for the employment policy formulation and decision making of the government.