The paper discusses the broad applicability of the railway transport trans-log cost function under the condition of different research aim,studies the variables selection of China passenger / freight transport cost function and depicts on the practical application of railway transport cost function in the research on railway economic problem.

Base on comparatively analysis status quo of industrialization of high-new technology s development in Jiangsu,trans-log production function is build to lucubrate elasticity of productivity of the input factor and scale reward.

Integration of hypergame preferences perceived by experts with fuzzy weight assessment;

The Extension Hypergame Analysis and Its Application;

This paper presents a specific stability analysis method for a kind of hypergame situation with fuzzy preference perception matrix.

The method of supersymmetry and invariant are used to discuss the two-dimensional isotropic harmonic oscillator with time-dependent frequency.

In this paper we use the method of supersymmetry to discuss the invariant,obtain an eigenfunction corresponding to eigenvalue of the invariant for a harmonic oscillator with time-dependent frequency.