CGI调试系统的设计与实现

Web应用开发的各种技术中,CGI技术占有重要地位。文章简单介绍了CGI技术,并分析了CGI程序的运行环境。在分析了各种传统的CGI调试技术的优缺点的基础上,提出了一个通用的、操作系统平台无关、Web服务器平台无关的CGI调试系统。     

CGI后端——互动网页的坚强支持

二、CGI的运用基本知识 上一期向读者介绍了有关CGT的一些入门知识,在掌握了这些入门知识的基础上,才能实际地操作、运用、自由发挥CGI程序。这一期向读者介绍CGI的运用知识。在CGI的运用知识中将向读者分别介绍留言簿、计数器、聊天室、抽签游戏、统计系统、网上送信和网页检索引擎的CGI程序基本构造。读完这些运用知识,我想读者对CGI的运用和CGI程序应该有一个基本的了解。 首先,我先例举留言簿的CGI程序。留言簿的CGI程     

用VC＋＋编写CGI程序

本之通过对CGI界面,特别是Windows CGI界面原理的分析,介绍了用Visual C 语言编写CGI程序的方法,并给出了一个用CGI程序将WWW服务器与系统上的数据库相连的例子。     

WWW信息系统中公共网关界面的研究

公共网关界面 (CGI)是 WWW信息系统中的一个关键技术。本文从 CGI标准出发 ,叙述了 CGI的概念和工作机制 ;讨论了实现 CGI技术的问题 ;并提出解决办法以及在实际中的应用。     

续CGI后端

上一期向读者介绍了有关CGI的一些入门知识和留言簿的CGI程序基本构造。这一期将介绍“计数器的CGI程序基本构造”。 计数器不像其他CGI那样受人青睐和重视。给人们的印     

用VC^＋＋编写CGI程序

该文通过对CGI程序,特别是Windows CGI程序原理的分析,介绍了用Visual C~( )语言编写CGI程序的方法,并给出了一个用CGI程序使得WWW服务器与系统数据库相连的例子。     

通过Perl模块运行CGI脚本

为什么人们都愿意用mod_perl?因为它可以提高CGI的性能。mod_perl和Apache::Registry模块使得CGI请求激活缺省的Perl句柄。Perl句柄用在从服务器上读取CGI程序的阶段。Apache::Registry是用来模拟CGI环境的Perl模块,你可以使用标准Perl CGI脚本而不需要重写它们,这是到目前为止,花最少代价来提高CGI性能的方法。通过Apache::Registry模块,每个单独的CGI程序在它们第一次被调用,或者是修改以后被编译并存到一个缓冲区,该方式使它对于每一个调用这个CGI程序的进程都是可用的,这种处理节约了CGI在启动时的资源消耗。多数的CGI程序都保存在/cgi-bin/里面,但是     

CGI技术及其安全性研究

本文论述了CGI技术的标准规范、实用范围，并给出了一CGI的应用实例，最后就如何编写安全CGI程序进行了讨论。     

圆你的网络高手梦(下)

CGI是最早的后台Web程序语言,CGI的意思就是公共网关接口,其提供的仅仅是一种网络接口,而不是语言,所以我们把它叫做语言应该说是不确切的。CGI是最早流行的也是令第一代Web程序员激动的语言,那些非Web的程序员可以用自己熟悉的语言来编写CGI,如Perl和C语言。 但是编写CGI是一种复杂的工作,因为CGI编写人员必须要懂得C/C++等编程思想。CGI是需要编译的,这一点注定了CGI在动态网页上的运用比较麻烦——因为我们每做一小点改动都要重新编译、重新生成可执行文件,可想而知其巨大的工作量。CGI有执行速度不快、修改麻烦、代码重用率低、开发周期长等等问题,现在已经很少有公司再用CGI程序作为Internet程序了。但CGI并没有被淘汰也不可能淘汰,因为CGI体现的是一种接口,而不是一门过时的语言,Web服务器的来往通信必     

WWW Server中CGI的工作原理及编程方法

本文论述了HTTPD中CGI（公共网关接口）的一般工作原理，分析了从client端发出请求，到WWWserver起动CGI程序，再到CGI程序将运行结果返回给client，并加以正确显示的各个环节。系统地描述了编制一个CGI程序所需的步骤及方法。     

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.     

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。     

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.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

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.     

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     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.