The purpose of this study was to investigate the average net joint moments of hip,knee,and ankle during plyometric weight exercise,compare each of the joint contributions and analysis the effects of plyometric weight exercise on the development of muscle strength and power of lower extremity.

On The Language Contribution of Literary Works;

Through establishing the general mode of development between natural resource and industrial structure, this paper illustrated systematically the contribution of natural resource to regional development in each historical period in mountain areas of China.

The structure of the port related economic activities,the implication of the port economic contribution,the research methods and its its index system are discussed in this paper.

Discussion on system of indicator system design; Hierarchy and Comparison Method of Index Contribution Degree;

Research on the Contribution Degree of Equipment Manufacturing to the Industrilization of China;

This paper discussed the contribution to independent innovation(including technology innovation,service innovation and management innovation) by BPO from the view of theory,and it adopted questionnaire survey with correspondence analysis to study the contribution degree of BPO on the capability of independent innovation.