在Internet和Intranet上Web数据库的操作

1.Internet数据库连接器(IDC)如何工作 Web浏览器(例如IE或其它公司的浏览器如Netscape)使用HTTP将请求提交给Web服务器。通过IIS中的Internet数据库连接器(IDC)来完成对数据库的访问。Internet数据库连接器(Httpodbc.dll)是一个使用ODBC来访问数据库的ISAPI DLL。具体工作过程如下:     

在WWW服务器上实现数据库访问

本文详细介绍一种基本上不必编程,利用Ｍｉｃｒｏｓｏｆｔ提供的数据库连接器（ＩＤＣ）和开放式数据库互连接口（ＯＤＢＣ）,实现在ＷＷＷ服务器上进行数据库查询的基本原理和方法。     

基于JDBC的数据存取技术

本文讨论了使用Ｊａｖａ数据库连接器（ＪＤＢＣ）连接和查询数据库的基本方法和一般过程，并给出完整的程序例子。     

开发基于数据库的Web应用的实现技术

利用Web服务器的信息服务能力和数据库的数据管理能力来构造大规模的信息服务系统已成为当前人们关注的热点,其关键技术是数据库网关的实现.本文介绍了数据库网关的几种实现技术Internet数据库连接器(IDC)、基于Java或VisualJ++的数据库访问、公共网关接口(CGI)、ISAPI、活动服务器页(ASP)、数据绑定(浏览器插件)、各种集成开发工具.     

Delphi10.4.1 FireDAC连接SQL Server数据库实践

FireDAC数据库连接器是数据库应用套件。在多种数据库的连接和开发中,Delphi的数据库驱动和无缝连接的能力是其他工具难以企及的,Delphi程序员和Delphi的强力数据处理功能、灵活简便的数据库连接方式直至今仍发挥着作用。着重介绍了利用最新的Delphi版本中FireDAC数据库功能套件实践连接SQL Server数据库的简便方法,SQL Server数据库属中型量级的典型数据产品,在数据网络化应用方面优势明显,通过存储在SQL Server中的森林生态系统和资源平台数据,探讨其相关的网络应用的简便途径。     

开发基于数据库的Web应用的实现技术

利用Ｗｅｂ服务器的信息服务能力和数据库的数据管理能力来构造大规模的信息服务系统已成为当前人们关注的热点,其关键技术是数据库网关的实现。本文介绍了数据库网关的几种实现技术,包括Ｉｎｔｅｒｎｅｔ数据库连接器基于Ｊａｖａ或Ｖｉｓｕａｌｊ＋＋的数据库访问、公共网关接口（ＣＧＩ）、ＩＳＡＰＩ、活动服务器页（ＡＳＰ）、数据绑定（浏览器插件）等各种集成开发工具。     

互连网络的网间连接器协议──TCP／IP专题系列之七

介绍包括互连网间连接器系统的体系结构、核心网间连接器系统及网间连接器与网间连接器协议ＧＧＰ、自治系统及外部网间连接器协议ＥＧＰ和内部网间连接器协议等在内的互连网络Ｉｎ－ｔｅｒｎｅｔ协议系列中的网间连接器协议。     

Internet数据库连接器（IDC）编程探析

1.Internet数据库连接器概述 微软的 Internet信息服务器——IIS(InternetInformation Server)是当今Windows NT操作平台上执行效率最佳的Web服务器之一。基于Web浏览器的Internet信息服务器可以将数据库服务器中的数据信息通过Internet Web浏览器显示给客户端的用户。利用Internet 信息服务器和开放式数据库连接(ODBC),人们将能够: 创建包含数据库信息的Web页。 基于用户在Web页上的输入,从而插入、改变和删除数据库的信息。 执行其他的SQL命令。 客户端浏览器通过HTTP协议向Internet信息服     

网站救星有WebSphere

3月16日获悉:替代CGI的IBM Websphere Application server已经横空出世,网络管理员不再忧心忡忡:Internet用户访问CGI过程时,CPU使用率直线上升,担心系统离崩溃。WebSphere Application Server包括:lBMDomino GO WebServer、与CORBA支持的连接器、JDBC数据库和ServletExpress     

美国合宝公司近日推出2Click预抛光光纤连接器

美国合宝公司近日推出2Click系列预抛光光纤连接器，这些连接器包括单模和多模产品，支持局域网和主干光纤应用。2Click连接器避免了光纤打磨和粘合剂固定的过程，大大节省了光纤连接器端接时间，也大大提高了平均端接质量。     

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.