Based on a differential comparison principle and a basic monotonicity condition, technical stability relative to certain prescribed state constraint sets of a class of nonlinear time_varying systems with small parameters was analyzed by means of vector Liapunov function method.

This paper expounded the necessity of clarifying the definition of sports tourism based on the basic theory of tourism and the current researches trend and problems of present researches,and discussed further on some aspects of the technical definition.

The Discussion of the environmental effect technology assessment of Chemical industry items of basic construction;

The earnest technology assessment, completes the medical equipment shaping recommendation work;

Rational Thought of Utilitarianism Technology Assessment and Democratic Procedure Technology Assessment;