高职院校网络考试系统的设计与实现

高职院校网络考试系统的实现结合了ASP.NET、ADO.NET及AJAX技术,采用B/S结构模式,主要由管理员功能子系统、教师功能子系统和学生功能子系统组成,其功能包括题库管理功能、阅卷功能、网络在线考试功能等。本文主要对网络考试系统开发过程中涉及的技术及设计内容进行探讨。     

高校专业课无纸化网络考试系统的设计与实现

高校专业课无纸化网络考试系统是基于C/S构架的客户机/服务器局域网无纸化网络考试系统,采用VB6.0编程语言和ACCESS2003数据库开发而成。系统中采用动态联网技术和先进的界面控制技术,实现动态、即时、随机组卷和在线无纸化考试功能。本系统突破了传统网络考试中仅能组织填空、选择、判断题考试的局限,能够实现包含图表和公式的复杂题型的在线考试,为大学本科专业课程无纸化网络考试开辟了新途径。     

流畅化在线考试系统的设计与实现

在线考试的核心问题在于系统的不流畅,不流畅的后果直接导致在线考试的失败.从流畅化的理念来说,考试页采用静态页面比动态网页更加迅速和有效.试卷页设计成HTML静态网页,答题卡设计成XML文件.采用JavaScript+XML+AJAX实现异步不间断时间点的保存考试过程,保证做题过程和保存考试记录互不干扰.     

基于ASP．NET AJAX的网上考试系统的设计与实现

随着信息技术向教育领域的扩展,网上考试系统在高校的数字化建设中被广泛地应用。为优化传统的基于Web的网上考试系统的性能,该文首先概述了AJAX技术和ASP．NET AJAX的架构,然后利用ASP．NET AJAX开发框架的异步通讯能力和局部刷新页面的特点．解决了传统的网上考试系统中存在的客户端响应速度慢、现场数据保存和准确计时等问题,从而为用户带来了更好的在线体验。     

基于B/S的护理知识测试平台的研究与实现

比较C/S与B/S的网络考试平台的优缺点,采用ASP.NET技术针对执业护士护理知识测试提出基于B/S的网络考试平台的实现方案,系统采用改进的随机选题算法进行组卷,通过AJAX技术对考试过程进行动态监控和交卷控制,使Web系统具有类似C/S系统的交互性。对考试过程中可能出现的意外情况提出解决方案,系统满足批量考生参与的在线考试需求,极大地减轻出卷、评分和成绩统计等繁重工作,具有较高的应用价值。     

AJAX技术与J2EE集成的研究与应用

使用AJAX(Asynchronous JavaScript and XML)技术结合J2EE应用能实现一种全新的动态Web应用,这种应用方式无论从外观还是操作都很类似传统的桌面应用程序,却不再依赖插件和浏览器的某些特定功能。分析了AJAX的概念、特点及关键技术后,简述AJAX技术能与J2EE集成的原理,最后介绍运用DWR(Direct Web Remoting)框架实现的在线商店产品数据查询模块。     

基于B／S模式的网上考试系统的设计与实现

利用网络和数据库技术,开发了基于B／S结构的多用户在线考试系统。该系统使用方便、操作简单,现阶段能实现多用户同时在线考试、随机组卷、时间控制、试题录入及修改、主观题阀卷、用户管理、科目管理、成绩管理等重要功能,也就是说实现了真正的无纸化考试．满足任何授权的考生随时随地考试并迅速获得成绩。     

基于Web的在线考试系统的设计与实现

结合多年网络基础教学及软件开发的实践,提出一个通用的基于Web的在线考试系统的构架,并给出了该系统的总体功能和主要实现技术.该技术可实现自动给出学生答题正确率,教师参考正确率组织试卷,同时可控制学生有选择地进行在线考试,实现考试的电子化及自助功能.     

基于AJAX的在线客服系统的设计与实现

在线客服系统是一种网页形式的即时通讯软件平台的统称,为企业提高形象,加强企业与企业网站访客的互动,为企业进行网络营销提供了很好的平台。AJAX（Asynchronous JavaScript and Xml）作为Web2.0的代表技术之一,是在线客服系统得以实现,推广的关键技术之一。介绍了AJAX的技术和工作原理,并给出了基于AJAX技术的在线客服系统的设计与实现。     

B／S架构WEB程序中AJAX异步传输技术的应用研究

基于B／S架构的WEB的应用程序实现人机交互的常见方式是页面请求,页面完整刷新过程令用户体验变差,服务器压力变大,程序响应速度变慢。利用AJAX异步传输技术实现页面的局部更新,可以提升程序交互的效率,提升程序界面的友好性。文章通过在线考试系统设计中的AJAX典型应用,介绍利用AJAX实现页面局部刷新的原理和方法。     

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.