Internet网际网的关键技术之一：CGI技术的探讨

本文简要地介绍了与ＣＧＩ相关的ＷＷＷ服务，提出了ＣＧＩ的概念，探讨了ＣＧＩ的编程范式。     

公共网关接口CGI的设计与实现

ＣＧＩ程序是ＷＷＷ和数据库的桥梁,其目的是使用户通过浏览器完成对数据库信息的检索查询及有关控制操作。本文描述了ＣＧＩ接口规范,分析了ＷＷＷ与数据库的局限性,探讨了ＣＧＩ的实现技术,并介绍了将ＷＷＷ与数据库相结合的ＣＧＩ程序的具体设计与实现。     

用VC＋＋编写CGI程序

醉地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服务器与一类主页自动维护技术

本文简要论述了ＷＷＷ的服务方式，详细讨论了ＣＧＩ编程技术，讨论在一定的规则下如何ＣＧＩ的原理，在数据发生变化时无须更改主页而达到自动维护主页的技术。     

Internet系列讲座 第十二讲:使用CGI

Ｉｎｔｅｒｎｅｔ系列讲座第十二讲：使用ＣＧＩ上海交通大学网络信息中心（２０００３０）马国海谢金宝一般来说，ＷＷＷ网上的大多数信息是静态的，也就是说用户完全是被动的。但有１种方法可以使用户和网点（Ｗｅｂ站）之间实现交互访问，那就是ＣＧＩ（ＣｏｍｍｏｎＧ...     

开放式地理信息系统应用开发平台的理论与实现

首先，以开放ＧＩＳ协会（ＯｐｅｎＧＩＳＣｏｎｓｏｒｔｉｕｍ，ＯＧＣ）提出的开放地理数据互操作规范（ＯｐｅｎＧｅｏｄａｔａＩｎ－ｔｅｒｏｐｅｒａｂｉｌｉｔｙＳｐｅｃｉｆｉｃａｔｉｏｎ，ＯＧＩＳ）为核心，结合ＷＷＷ技术来探讨开放式地理信息系统应用开发平台的实现方案。然后，描述了一个遵循ＯＧＩＳ规范的ＧＩＳ应用开发平台ＯＧＩＳＤＰ（ＯｐｅｎＧＩＳａｐｐｌｉｃａｔｉｏｎＤｅｖｅｌｏｐｍｅｎｔｐｌａｔｆｏｒｍ）的设计与实现方案，提出了应用开发平台的构成要素和新的ＧＩＳ应用程序范型，以及基于ＯＧＩＳＤＰ技术的项目实例——ＷｅｂＧＩＳ。     

一种提高CGI程序性能的方法

本文探讨了在ＷＷＷ中用动态库界面代替原有的ＣＧＩ界面，以提高服务器的性能，并简单介绍了如何在软件ＮＣＳＡｈｔｔｐｄ的基础上实际这一目标。     

SGI的对称多处理Web服务器系列

ＳＧＩ的对称多处理Ｗｅｂ服务器系列在Ｉｎｔｅｒｎｅｔ上的ＷＷＷ服务正在发生深刻的变化——从静态的，以文本为主的环境转向动态的，高度交互的环境。ＳＧＩ的Ｗｅｂ服务器系列ＷｅｄＦＯＲＣＥＣＨＡＬＬＥＮＧＥＤＭ、Ｌ、ＸＬ，由于采用了先进的ＣＨＡＬＬＥＮＧＥ...     

利用VB开发WWW多媒体检索系统的试验

主要阐述如何用Ｖｉｓｕａｌ Ｂａｓｉｃ去开发一个ＣＧＩ的ＷＷＷ检索程序，并通过数据库中的一些存放多媒体信息的字段与ＷＷＷ游览器联系起来共同反映多媒体信息。     

交互式Web与CGI编程技术

ＷＷＷ的服务方式及利用ＣＧＩ接口开发交互式Ｗｅｂ网页的几种方法。     

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.