高性能的PCMCIA数据加密卡的设计与实现

随着笔记本电脑的不断普及,符合PCMCIA标准接口的PC卡被广泛地应用在各个领域。同时,由于数据安全日益得到重视,对笔记本电脑硬盘中的数据进行加密成为一种迫切需要。该文在PCMCIA接口规范的基础上设计了一种高性能的PCMCIA数据加密卡,重点介绍了该系统的结构设计,并给出了硬件的实现方案。该系统通过在FPGA上的仿真和在Windows9x环境下的测试,完全符合PCMCIA的设计规范要求,可以对计算机的数据进行有效的加密保护;并且由于该系统的设计考虑了VLSI的特性,易于ASIC的实现。     

一种应用用IC卡数据加密的Rijndael改进算法

经对Rijndael算法研究发现，其密文长度通常大于明文长度，且运算时间复杂度较高，不便于对IC卡的数据进行加密。按照IC卡数据加密的实际需求，提出了一种基于Rijndael算法的改进算法。改进的新算法通过用动态密码对明文修补，实现密文与明文的长度相同；通过改进密钥扩展算法，保障新算法安全；通过减少加密轮次，降低其时间复杂度，从而使其在IC卡数据加密系统中的应用可行。     

基于IP复用的硬盘加密卡的设计与实现

基于IP复用方法实现的硬盘加密卡,是一种用于保障数据存储安全的硬件加密装置。论文通过分析与测试,证明该加密卡能在不影响软件使用和对用户透明的前提下,对硬盘中的数据进行全面的实时加密,为用户数据的安全存储提供可靠的保证。     

一种应用于IC卡数据加密的Rijndael改进算法

经对Rijndael算法研究发现,其密文长度通常大于明文长度,且运算时间复杂度较高,不便于对IC卡的数据进行加密。按照IC卡数据加密的实际需求,提出了一种基于Rijndael算法的改进算法。改进的新算法通过用动态密码对明文修补,实现密文与明文的长度相同;通过改进密鈅扩展算法,保障新算法安全;通过减少加密轮次,降低其时间复杂度,从而使其在IC卡数据加密系统中的应用可行。     

基于DSP-FPGA的网络传输信道加密系统

数据加密技术是网络安全的基础,是网络中最基本的安全技术.本文对基于DSP-FPGA的加密卡进行了论述,对伪随机加密算法进行了分析,提出了一种采用TMS320C54X和FPGA实现网络传输数据加密系统的设计方案.     

一种安全的IC卡数据加密算法及其应用

讨论了IC卡系统的安全问题,设计了一种基于DES算法的三重加密模式,分析了其安全性,并讨论了该算法在医疗保险IC卡系统中的成功应用。     

基于DSP的PC加密卡的实现

Rijndael加密算法是高级加密标准（AES）的最终获胜的候选算法。本文对基于DSP技术的PC卡进行了论述，对Rijndael加密算法进行了分析，提出了一种采用TMS320C54X和PCI接口芯片实现加密卡的设计方案。     

Linux下加密卡驱动程序的开发与性能分析

在分析了Linux驱动程序结构的基础卜，洋细介绍了一种Linux下加密卡驱动程序的开发过程，在对比分析加密卡性能的基础上，提出了在驱动程序中封装加密算法的软硬件结合方式来提高加密卡的性能。     

数据加密技术及用VB6.0实现数据加密算法

数据加密是保证网络数据信息安全的一种重要技术手段，本文介绍了现代密码学中两个经典密码算法（DES和RSA）的数据加密技术，接着提出了一种对汉字、文本加密的方法，最后给出了采用该加密方法，用VB6．0实现数据加密的过程。     

基于FPGA的PCMCIA加密网卡

介绍了采用Altera公司的FPGA芯片实现的基于PCMCIA接口的加密网卡。核心模块用VHDL描述，在Quartus Ⅱ软件下进行综合和仿真，并在EP20K200E FPGA目标板上进行了成功的验证。这种在单片上实现PCMCIA接口控制和数据加密的高集成方案具有较好的安全性。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。