基于VPN技术的Web电子支付系统的研究与实现

随着电子商务的发展,基于Ｗｅｂ的电子支付系统成为目前Ｉｎｔｅｒｅｎｔ研究的热点,其中,安全性和是其关键所在。据此,本文首先提出了一种具有二级安全结构的基于ＶＰＮ技术的电子支付系统体系结构,并在具有实现的基础上对其安全及性能进行了验证。     

资源预订协议RSVP和ST—Ⅱ的分析和比较

文章介绍了Ｉｎｔｅｒｅｎｔ网络中支持资源预订的协议ＲＳＶＰ和ＳＴ－Ⅱ的基本原理和工作过程，并对这两种预计协议的特性作了分析笔比较，阐述了这两种协议在多种体通信中应用前景。     

蜻点蜓水话网络

蜻点蜓水话网络对于中国的Ｉｎｔｅｒｎｅｔ用户来说，他们最希望在网上获得对自己有用、有效的信息，当然，前提是自己能看得懂。于是，中国的ＩＳＰ不再单纯提供Ｉｎｔｅｒｅｎｔ服务，而是都在变着法儿地组织网上中文资源，提供独具特色的中文信息服务。本刊希望能在这...     

坐客Internet网

坐客Ｉｎｔｅｒｎｅｔ网对于沈阳电信的Ｉｎｔｅｒｎｅｔ网苑，笔者早有耳闻，还看过他们的一本Ｉｎｔｅｒｎｅｔ入门教材，入网之初对我有很大帮助。在印象中，Ｉｎｔｅｒｅｎｔ网苑就是一个演示、咨询的场所，完全是一个商业活动的窗口。后来漫游之时，找到了Ｉｎｔ...     

一种新型的高速公路闭路监控系统

本文就基于Ｉｎｔｅｒｅｎｔ的高速公路闭路监迭系统,从硬件方案、软件方案、主要监迭操作的实现等几方面进行阐述,该系统可实现对大规模监控设备群的控制,具有极广阔的应用前景,可广泛应用于分布式监控环境。     

基于Internet的空间数据库访问技术研究及实例

空间数据库是ＧＩＳ的核心,设计和实现基于Ｉｎｔｅｒｅｎｔ的ＧＩＳ的关键点之一就是如何实现基于Ｉｎｔｅｒｎｅｔ的空间数据库的访问。本文从介绍Ｊａｖａ与ＪＤＢＣ入手,重点介绍在我们设计和实现的一个基于Ｉｎｔｅｒｎｅｔ的ＧＩＳ系统中如何对空间数据库进行有效访问。     

基于WAP的无线寻呼软件

随着Ｉｎｔｅｒｎｅｔ的不断发展和壮大,许多应用程序都正在移植到Ｉｎｔｅｒｎｅｔ上,ＷＡＰ规范定义了一个开放的标准结构和一套用来实现无线Ｉｎｔｅｒｎｅｔ接入的协议,本文详细探讨了基于Ｉｎｔｅｒｅｎｔ的无线寻呼软件的实现方案,采用了ＷＡＰ应用模型,可对ＷＡＰ与ＷＥＢ服务器之间的数据过滤,实现了网络数据库操作及网上寻呼的软件开发过程。     

基于Java的图形化实时信息系统研究

随着Ｉｎｔｅｒｎｅｔ／Ｉｎｔｒａｎｅｔ的发展和各种数据采集手段的完善,的信息系统汇集的大量生产实时数据。为满足生产调度的需要。这些数据需实时发布到Ｉｎｔｅｒｅｎｔ／Ｉｎｔｒａｎｅｔ上,但是传统的Ｃｌｉｅｎｔ／Ｓｅｒｖｅｒ模式由于其自身的局了巛悄再能满足这种信息需要。本文根据在东北电网完成的“基于Ｗｅｂ浏览器的实时工况显示系统”的工程实践,提出了一种基于Ｊａｖａ语言的Ｂｒｏｗｓｅｒ／Ｗｅｂ Ｓｅｒｖ     

网络安全管理中数据融合技术应用分析

由于网络中涉及大量重要数据及隐私信息，若缺乏有效的安全保障技术，势必会引发严重的混乱和损失，为此一种数据融合技术得到广泛应用。在网络安全管理中应用数据融合技术，有助于弥补传统安全技术缺陷，利用全新融合模型满足安全管理目标，文章优先分析网络安全管理问题，简要介绍数据融合技术内容，在此基础上针对实际提出应用模型设计，以挖掘数据融合技术潜力，竭力为网络安全管理提供技术支撑。     

审计信息系统等级化保障体系构思

一个完整的信息安全保障体系是安全管理和安全技术实施的结合，两者缺一不可，在采用各种安全技术控制措施的同时，必须制订层次化的安全策略，完善安全管理组织机构和人员配备，提高安全管理人员的安全意识和技术水平，完善各种安全策略和安全机制，利用多种安全技术实施和安全管理实现对计算机系统的多层保护。为了实现对信息系统的多层保护，真正达到信息安全保障的目标，     

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。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

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.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.