By analyzing the weakness of traditional evaluation index system,designing managers ratio of actual income and remuneration plan as well as selecting evaluation benchmarking,this paper has rebuilt a performance evaluation system for managers in order to alleviate the contradiction and tension between shareholders and managers that are caused by separa-tion of their rights.

Objective To evaluate the distortions of stomatological digital pantomography.

Objective The aim of this study was to quantify the vertical and horizontal distortion in panoramic radiographs in various implant regions of the jaws.

The aim of this study was to quantify the vertical and horizontal distortion in panoramic radiographs in various implant regions of the jaws and thus to assess the dental .

Based on the rate distortion theory, the method adaptively allocated bits among all the programs according to their complexity.

For independent transcoding of MPEG-2 VBR video,frame shift and algorithm based on correlation of slice are proposed;For joint transcoding, we introduce the joint rate control strategy based on the rate distortion, which uses the concept of superframe.

Based on the adopted rate distortion models,a number of typical rate-control algorithms in MPEG-2,H.

ROI coding method for adaptive rate-distortion tracing;

The direction of the best Bandelets transform is obtained by minimizing the constructed rate-distortion function.

This paper presented a statistics analysis of the picture distortion caused by quantization, channel errors and subsequent error propagation, and proposed rate-distortion estimation models which are functions of two parameters, i.