This article makes an overall investigation on various sports in the man horse vaulting in the 34th Tianjin World Gymnastics Championship By way of video follow up, this article analyses the start value, movement type, goals spread and landing stability of the contestants It researches fundamentally the current situation of today s world horse vaulting and raises the future developing tren

The purpose of the article is that the moving model of the human body can be constructed by joining the series of rigid links to study the landing stability of freestyle-skiing aerial.

Study on community stability of mixed pastures in semi desert area of Gansu;

The Study of Community Stability and the Establishment of Yield Factors Model about Mix-Sowing of Medicago Sativa & Bromus Innermis;

The results indicated that the community stabilityies of natural oak secondary forest varied with the composition of tree spec.

The interstice stress is the most important factor that affect the earthquake stability, and it is decided by the material of the dam.

The quasi statics method is adopted for the normal calculating of anti-earthquake stability of tailings dam, which is a kind of special construction for metal or non-metal mine, but not enough because of the difference between the actual condition and the hypothesis in this method for the form and mechanism of dam damage.

Effects of mining excavation on ground stability;

Effect of shear strength increase on foundation stability in process of preloading in stallments;

Calculation methods of foundation stability in process of preloading;

Fuzzy comprehensive evaluation method of the foundation stability of new-buildings above worked-out areas