Objective To examine the exercise behavior of adolescents;to reveal the differences in self-efficacy and decision balance by the stages of exercise behavior,and to identify the relationship between exercise behavior and psychological variables.

The lack of theoretical study about trade-off decisions between time and cost results in their frequent fighting in the actual petrochemical construction projects.

New employment relationship go in for employee to handle and develop knowledge for the sake of continuous improvement of the quality of products and the efficiency of operations,so employee are endowed with more discretion and decision-making power.

It gives objective evaluation on the problems existing in the aspects of property right, decision-making power, supervision right, etc.

Our present government-owned feature with the uncertain system of the farmland property has brought a severe infringement from the public decision right of the rural collective agents and government to the farmers private decision.

There are mainly two models of the system design of the belonging of target company s decision right to take anti-takeover measures,i.

Improved UCONC authorization decision model for the service grid;

A policy specification was proposed to meet the demands of grid authorization decision.