A non coherent discrete model based on radiative transfer theory is used to model the transmissivity and emssivity of vegetation canopy, which is more realistically characterized as a volumetric medium consisting of discrete scatters (leaves, stems, branches, and trunks) with various sizes and orientations.

In order to adapt SCS to the continuable development of network and the system integration of intelligent building and intellignet domain, its transmission speed, performance and the management idea have been improved and the Building Integration Cabling and Home Cabling System have been developed.

In view of these questions, obtains from the GPRS success rate of access and the transmission speed, through carries on the multianalysis to the crucial target and the signaling flow, classifies deals with the GPRS network issue daily the solution method, forms the quite complete optimized processing mentality.

It may satisfy the requisition that 600 terminals make measurement in 8 h by composite frame,increasing the transmission rate of data and collecting data from terminals conform to 2004 rule in time.

The simulation result shows that the local exchange is better than the remote exchange in the aspects of the grouping time delay and the transmission rate.

The transmission rate of optical signals were measured under different conditions which the computers have either the same operating system or different operating system.

The research of multiplexing and transmission efficiency of SDH;

Study on the transmission efficiency of optic fiber probe;

Transmission efficiency of high power density soft X-ray through capillary;