Abstract:随着存储技术的进步，利用直播卫星等数字广播通道和整合大量文化资源的内容定位技术，可以建立一个把信息送达全国城乡，任家庭自由收藏、取用的全民共享信息的人文环境：“文化网格”，它是实现大规模远程教育、终身教育和电子文化传媒发行的一种理想机制。

Abstract:A forward secure strong proxy signature scheme is proposed on the basis of the proxy signature schemes and forward secure schemes.The security of the proposed scheme relies on the difficulty of solving discrete logarithm problems and the difficulty of com

Abstract:Based on NAS-RIF algorithm for blind image restoration proposed by Deepa Kundur, an improved method is proposed in this paper.In this method, background rectification is developed for non-uniform background images to expand the applied scope of the origin

Abstract:Based on block histogram algorithm for color image retrieval using in CBIR system,the performance of color matching pair retrieval algorithm that makes further use of the spatial similarity information between example image and retrieved images is analyze

Abstract:The hierarchy chart of embedded CPU and the function of compiler in embedded system are introduced.Five compiler optimizing techniques,including process analysis,real time variable analysis based on static state variable and global variable,implanted func

Abstract:Many factors influencing the dynamic range of radar receiver are discussed in this paper,especially in the case of clutter disturbing dynamic range existence.Proceeding from the engineering application,a computing method of the receiver,s dynamic range is

Abstract:A mathematical analysis of phase noise of digital frequency synthesizer is presented.Three quantization noise sources are given according to random process theory in the paper, assuming that these noise sources are independent to each other.The variation

Abstract:In this paper,An unique model of MEMS microwave switch has been analyzed and simulated using ConventorWare and ADS(Advanced Design System),which utilizes torsion spring and leverage for low voltage and good isolation.The switch operates in frequencies fro

Abstract:The relation between magnetic profile and beam current transport behaves in the focusing system has been computed by beam matrix method.The influences of beam initial parameters on spot size have been studied.Through caculations several magnetic profiles

Abstract:Web services provide an essential building block for realizing dynamic e-commerce by facilitating standards-based program-program interaction. In this paper,the rationale and function of dynamic e-commerce and web services are introduced,and a web service

Abstract:A prototype of a non-router TCP/IP stack is introduced.This TCP/IP implementation prototype aims at the small-size embedded system.Abiding by RFC 1122,it provides IP,ARP,UDP,TCP protocal services and Berkeley socket interface.With short codes and a low co

Abstract:Programming method of block data serial communication of SIEMENS S7-200 PLC CPU226 and Industry Control PC is introduced in detail in this paper.The program of interrupting receive request is presented.It can be applied to real monitoring system,composed

Abstract:A high voltage nanosecond pulse generator is developed for firing a large current switch.By rational configuration of the low voltage solid circuits and hydrogen thyratron circuits,long precise delay and low jitter of high voltage output can be obtained.S

Abstract:Real time measurement of complicated medium is the important foundation to provide a robust, real-time and intelligent detonation decision for the fuze.Rule based feature extraction is a new measuring method, in which features are selected in the followin

Abstract:A non-stop crossing-gate vehicle management system is applied to vehicle management of residential districts,parking lots and confidential agencies. It employs RFID, microwave integration and system synthesizing techniques to collect data and manage vehic

Abstract:First the purpose of the R&D of the radiation detector with a sensitive diameter of 80mm is introduced.The design method,structural feature and manufacturing process of this detector are also discussed.Then, the analysis and testing methods of the static

Abstract:A 6 channel soft X-ray spectrum diagnostic system is designed.Its a broadband Ross filter spectrometer system for measuring soft X-ray radiation(0.1keV-1.5keV) emitted from Z-pinch plasma on yang accelerator.How does this system to work,how to choose mate

Abstract:The architecture of the software radio, including the software and hardware architecture, is one of the key techniques which realize the software radio. In this paper, some applied software and hardware architectures are discussed in detail, in addition,

Abstract:The importance of software testing is mentioned firstly.Then the choke point in the software testing development is expounded.Lastly,the mistakes in the software testing at present are analyzed and the right points of view are brought forward.

Abstract:The development process of Image compression coding standards has been introduced in brief.And the fundamental theories and involved technologies of several international standards for image compression are presented.Moreover,the realization of some impor