Dynamically Reconfigurable Encryption System of the AES

Reconfigurable computing has grown to become an important and large field of research, it offers advantages over traditional hardware and software implementations of computational algorithms. The Advanced Encryption Standard （AES） algorithm is widely applied in government department and commerce. This paper analyzed the AES algorithms with different cipher keys, adopted a novel key scheduler that generated the round key real-time, proposed a dynamically reconfigurable encryption system which supported the AES algorithm with different cipher keys, and designed the architecture of the reconfigurable system. The dynamically reconfigurable AES system had been realized on FPGA. The result proves that the reconfigurable AES system is flexible, lower cost and high security level.     

COBOL程序测试环境CPTS—1的设计与实现

CPTS-1是一个以 COBOL 程序为测试目标,为提高测试效率而实现的一个软件测试环境。本文旨在系统地介绍 CPTS-1的主要功能、特点和设计实现的基本原理。     

小功率激光器在流动图像测速系统中的应用

将低功率激光器应用于ＰＩＶ测速系统,首次采用微光像增强技术解决光源照度问题。设计了数字可调步脉冲光照系统以产生特殊序列脉冲光源。对垂直水口旋旋涡流场的测量表明,本文的方法是可行的。     

程序到二级控制图转换工具的研制

二级控制图可很清楚地反映程序的模块间及模块内的逻辑控制关系,它是静态分析非常有用的辅助工具.本文详细描述了从COBOL程序到二级控制图的转换工具TTPCD(Tool for Transformation from Program in to Two LevelControl Diagram)实现原理、技术和功能,并指出该工具进一步发展的前景。     

Testing Cross-Talk Induced Delay Faults in Digital Circuit Based on Transient Current Analysis

The delay fault induced by cross-talk effect is one of the difficult problems in the fault diagnosis of digital circuit. An intelligent fault diagnosis based on IDDT testing and support vector machines （SVM） classifier was proposed in this paper. Firstly, the fault model induced by cross-talk effect and the IDDT testing method were analyzed, and then a delay fault localization method based on SVM was presented. The fault features of the sampled signals were extracted by wavelet packet decomposition and served as input parameters of SVM classifier to classify the different fault types. The simulation results illustrate that the method presented is accurate and effective, reaches a high diagnosis rate above 95%.     

Ritt-Wu Characteristic Set Method for Laurent Partial Differential Polynomial Systems

Journal of Systems Science and Complexity - In this paper, a Ritt-Wu characteristic set method for Laurent partial differential polynomial systems is presented. The concept of Laurent regular...     

垂线投影坐标的信息处理及光学ＣＴ反演算法

分析了用光学ＣＴ原理构成无透镜光学遥测垂线坐标仪的结构特点。提出了处理垂线光学投影数据的自卷积算法以及从多个方向投影数据提取垂线坐标的代数反演算法。     

新时期加强民办高校党建工作的几点思考

新形势下民办高校在党员发展方面仍存在着不容忽视的问题。要加大经费投入、对积极分子要加强培养考察,对党务工作者需要着力培养。