C/S和B/S结合模式下应用系统的研究与开发

文章分析和比较了C／S和B／S模式各自的特点，指出了C／S和B／S结合模式在应用系统开发中的优越性，并结合一个实例详细介绍了基于多层C／S和B／S结合模式的应用系统的结构设计，以及ASP．NET和ADO．NET技术在Web开发中的应用。     

基于J2EE的Web应用系统的优化设计

基于B／S模式的Web应用系统目前被广泛用于处理分布式计算,但一致受到响应时间的困扰。针对J2EE平台上的Web应用系统,分析了影响其响应时间的两个主要系统参数一性能和伸缩性;基于解决性能和伸缩性瓶颈,提出一个Web应用系统的优化设计方案,并重点阐述了在系统设计、系统调试等阶段进行优化的一些具体措施。     

结合B/S模式和C/S模式的商业信息系统的设计与实现

提出一种将B／S模式和C／S模式相结合的商业信息系统开发方法，并结合一个实际的商业系统的开发，描述了主要设计思路，分析了系统的性能，并举例说明了系统的设计与实现方案。     

基于C／S与B／S的林权管理信息系统的研究与实现

文章分析了林权管理的现状和需求，在此基础上提出并实现了基于C／S与B／S模式的林权管理信息系统。在系统的设计与实现过程中，讨论了系统功能结构、B／S模式优化、数据库优化、ADO等关键技术，并结合实际对有关的设计工作进行了说明。     

基于WEB下的数据库应用系统的模式探析

对基于WEB下的数据库应用系统的开发模式C／S和B／S作了分析比较，提出使用C／S和B／S相结合的开发模式是构造WEB下的数据库应用系统较好的方法。     

基于B/S模式的电力通信网监控系统的开发

随着Internet的普及、WWW的广泛应用，传统的C／S技术，正逐渐被B／S架构所代替。论述了基于B／S模式的电力通信网监控系统，该系统采用Active X控件技术实现Web页面的动态显示，采用ADO技术实现对数据库的访问，介绍了该系统的主要功能和特点，以及Active X技术和ADO技术在该系统中的具体应用和实现方法。该系统在某局电力系统网中已经试运行，运行结果正常，性能良好。     

C/S结构数据库应用系统的性能调整

本文首先分析了影响C／S应用性能的主要因素，在此基础上提出了进行C／S应用系统性能调整的一般原则，最后具体介绍一个C／S结构ORACLE应用系统性能调整的思路和方法。     

油水井施工设计系统中B／S模式下的自动绘图应用研究

本丈介绍了B／S模式的概念和关键技术，分析了自动绘图原理和常用方法，给出了基于B／S模式下的自动绘图的实现方法，并列举实例说明了自动绘图系统在油水井施工设计系统中的应用，得出了在B／S模式下自动成图的若干结论。     

基于B/S结构的跨平台异构型数据库系统

本文首先介绍了近年来数据库应用系统开发通常采用的C／S模式，在分析其局限性的基础上，进一步阐述了针对该结构的改进方案，并结合Internet和Intranet技术引入了B／S模式，最后，对B／S模式在UUHDB系统中的实现，做了详尽的说明。     

基于C/S和B/S模式的应用系统安全机制的设计

随着电子商务的兴起，Internet技术的广泛应用，基于C／S和B／S混合模式的应用系统安全问题受到人们更多的关注。本文结合应用系统的功能设计、数据库表结构设计和界面设计，探讨了基于C／S和B／S模式的应用系统的安全机制问题。采用PowerBuilder7．0和ASP技术，开发了相应的安全控制功能模块，并将其运用在实际的系统开发中。     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.