Address mapping algorithm based on cell;

This article introduces a new congestion control method——technology of cells group discard which is based on adaptive control theory, and the thought of the adaptive control can be found in the new congestion control method.

The propagation delay of cells, especially the nonlinear large-lag of communication may create congestion and loss of data in rate-based flow control in networks.

When the cells with different priorities compete for resources, the cells with high priority should be served first, and the cells with low priority should wait in the buffer.

Study on problems of visual multivariate information system for emergency management

There mainly are geological,geophysical,geochemical and remote sensing information for the informations presently used for mineralization prediction;on this basis,the mineralization prediction for Hetai gold deposit is made,utilizing multivariate information;moreover the prospecting foreground districts are divided into.

Synthesizing multivariate information,Au\|comprehensive chemical exploratory anomaly was discussed with geostatistical methods at Guilaizhuang Au\|deposit.

With the continuous development of 3S technology,the requirement of customers keeps improving,and the original services methods can not meet the customers requirements for multi-information.