Divergence structure for the quantum entropy of a black hole in Anti-de Sitter spacetime due to the electromagnetic and gravitational fields is investigated by using the brick-wall model.

Study on velocity of light in gravitational field;

Motion of particle in quadratic gravitational field caused by rotating body;

A new method of calculating the deflection of light by gravitational field

The combination of market attraction and the strength of enterpris- es in the operating environment is analyzed, and the evaluation index system of them set up.

Application of gravitation field restriction technology in interactive drawing system;

Routing in multi-sink sensor networks based on gravitation field;

A concept and implementation as well as several main program fragments of restriction technique of gravitation field are given.

GIS-based researches on urban green space on landscape gravity field with Ningbo city as an example;

Based on engineering practices and theoretic studies in many years,combined with Earth gravity field theory,have made new annotation on retaining wall working mechanism,pointed out the friction between retaining wall bottom and contacting rock and soil bodies is the sticking point of retaining wall stability.