Abstract: The present invention relates to a system for measuring image quality of moving pictures. The system comprises a transmitter, for transmitting encoded image data through a channel, and a receiver, for receiving the encoded image data and analyzing image information from the received image data to measure the image quality of moving pictures. The receiver includes a reception data input unit for receiving the encoded image data, a reception information analysis unit for analyzing a bitstream from the received image data in order to extract image information including loss or non-loss, a motion vector, and coordinates of each block, and an image quality measurement unit for applying a weight to each block by using the extracted image information and calculating the number of lost blocks reflecting weights to measure image quality.

Abstract: A method for transmitting channel information in a multi-antenna system, the method includes calculating channel quality information (CQI) with respect to each mode, comparing the CQI with respect to each mode to a threshold value with respect to each mode, and transmitting CQI with respect to a mode having higher CQI than the threshold value as channel information. Good performance can be achieved regardless of the number of users or an SNR of users.

Abstract: The present invention is an analysis method for simulating accidental phenomena that may occur in a nuclear power plant system and applying them to actual safety analysis of a power plant. The present invention is an optimum evaluation system for safety analysis, which may exactly simulate thermal hydraulic phenomena in the nuclear power plant system with obtaining a suitable safety margin for various kinds of virtual accidents.