THE 500 HPA SUB-TROPICAL ANTICYCLONE DURING APRIL AND MAY 1988 AND THE WEATHER OVER INDIA

The sub-tropical ridge at 500 hPa in April has a considerable synoptic scale fluctuation. In April 1988, it showed a steady southward displacement to the equator. In May 1988, a fresh sub-tropical anticyclone formed in northern latitudes by the anticyclonic recut-mg of the dry northwesterlies of extra-tro-pical origin. By extending southward the northerlies ushered a dry spell extensively to the south of the sub-tropical ridge (STR). This was an event contrary to the normal northward progress of equatorial weather belt and the STR. Thus the mean April 500 hPa ridge does not provide a logical parameter for long range forecast-ing of the southwest (SW) monsoon rainfall over India.

Research and Implementation on Partition Table Recovery of Data Recovery Technology

The data in computer is lost because of the destruction of disk partition table. To solve this problem, a data recovery solution by recovering partition table was proposed. The hard disk logical parameter was introduced. The hard disk addressing mode was analyzed. On the basis of analyzing disk partition structure, the recovery principle of MBR and EBR was proposed. After the specific process of partition table recovery was illustrated, an implement scheme was proposed and proved to be available.

The Research of Intelligent Vehicles Mean Shift Based on Difference Algorithm

The workflow of mean shift has been put forward which is aimed at the intelligent vehicles. To select the logical parameter, the simulation of the formwork and the selection of search region is made; and select the most suitable algorithm of the three related algorithms through the simulation analysis; in addition, to achieve the binary image by difference and denoising, to obtain the energy distribution of the image by calculating the gravity centre of the projection, then proceed to the next step, to gain the target location. So the feasibility of the algorithm can be validated by the test, and the good results are obtained.