Using the documentary datum and comparative method, the author studies some technology factors of Chinese-foreign long jumpers at the absolute speed, run-up speed, rate of the speed usage, take-off ability, etc, and analyses the existing diversity, based of these, the author makes some proposal for solving questions and increasing achievement.

A query algorithm with a high absolute speed costing low I/O based on set theory is given, and a query algorithm of high response speed based on parallel process is presented.

The paper expounds briefly the absolute speed of ru n -up rhythm etc ,and attempts to improve sportsmen s long jump marks.

This paper discusses how the dynamic points and the dynamic reference system are selscted in composite movement and how the relative motion paths influence the computational points absolute velocity and absolute acceleration.

It was found that apart from his absolute velocity obviously lower than his opponents’, Huang Geng s velocity of the last 10m run up was also lower because of the influence of the absolute velocity.

Aimed at the problems existed of coupling over the speed limit for running cars from hump in Liuzhou South marshalling station, this paper put forwards the method and suggestion of fully utilizing the function of the system and rising control accuracy of exit speed of tangent retarder area.

A dynamic exit speed model based on fuzzy neural network is provided in this paper.

So, the paper proposes a dynamic exit speed model based on fuzzy neural network, and uses an improved BP algorithm, which makes the model having better selflearn and selfadapt ability and can adjust exit speed automatically according to the real rolling process.