? Using the standard mark in education statistic method to explain exam grades can make certain each exam mark s position in the whole,and can carry on different subjects exam marks compare and combination,thus can avoid the limitation of original mark.

The principle for transforming original marks into standard ones using normal distribution is discussed.

Several enconomical methods in difference computation,which include the method of Taylor expansion, the splitting method, the method of compensated computation in deducted region, the method of self-controled time step, are discussed on the basis of difference scheme of explicit and complete square conservation.

Offline storage of CT raw data;

A raw data acquisition system for detecting ocean wind-fields

A new 3-D image reconstruction method,presented in this paper,is to use the helical scan continuity,sufficient condition of image reconstruction and the raw data from a few helical scan cycles to reconstruct,by a direct interpolation algorithm,2-D images and then 3-D images.

The hydrometry original data processing system has been developed to resolve problems of tedious and time-consuming original data calculation and arrangement.

After college utilization of computerized accounting,the quality of output information depends mainly on the data collected and input,so it is essential to get high quality original data.

To achieve the original data of high quality is very important in the computerized accounting system.