In this paper, the authors suggest a design of transmission system used in realtime trains operation status based on GPS with train dispatching radio communication system and railway packet switched network .

Analysis for digital television in railway and wireless train dispatching signal interference;

The author summarizes the achievements in 1994 and puts forward the work in 1995 including: (1) Speeidng up communications network construction; (2) Giving great impetus to the development of signal technical equipment; (3) Setting key points of radio train control to new heights.

Growth and Yield Structure Characteristics of Young Ganwu series Plantation in Camellia oleifera Abel.;

In order to provide reference for efficient management and scientific and rational investment,investment and output of Ganwu series demonstration forest in Camellia oleifera clone in Baitu Town of Fengcheng City were analyzed,and cash flow and investment recovery period were predicted by technical economy analysis method.