A balanced scorecard for a small software group

You can't make money selling software. At least, that's what many firms that view software as an ancillary component to their business think. This article presents basic information on the Balanced Scorecard performance management methodology as well as critical success factors and common pitfalls. A BSC matrix and a supporting strategy map for a small software development organization are also presented.     

The aAQUA Approach: Innovative Web 2.0 Tools for Developing Countries

As in many regions of the world, people in rural India often lack access to knowledge that's more readily available to people in urban areas. Although rural telecenters are becoming more common, developing content that's presented in local languages, relevant to users, and delivered in an immediately usable form is a challenge here and in rural areas across the globe. To address this, an agricultural portal for rural farmers in India uses innovative database systems and information retrieval techniques. In so doing, it both improves service and addresses connection costs and constraints.     

Authentication and Expiration

There's a security problem with many Internet authentication systems that's never talked about: there's no way to terminate the authentication.     

SLACER: a self-organizing protocol for coordination in peer-to-peer networks

Coordination between nodes in open distributed computer systems is a general problem that's becoming increasingly relevant as massive peer-to-peer (P2P) systems are being deployed on the Internet. A major subproblem is establishing and maintaining cooperation between nodes. To solve this problem, we created a simple algorithm, SLACER (a selfish link-based adaptation for cooperation excluding rewiring). When executed in a P2P network's nodes, SLACER self-organizes the network into a robust artificial social network (ASN) with small-world characteristics and high cooperation.     

High-Level Broadcast Communication for Local Area Networks

Even for LANs without collision-detection hardware, this implementation of StarMod offers improvements of from 1.1 to 7.8 over pointto-point message transmission-and that's the worst-case gain.     

基于流技术的EVOD教育视频点播系统

分析了普通视频点播系统的不足，提出了一种适合于远程教育的教育视频点播解决方案，并应用该思想开发了基于Real,ASF,MOV等三种主流格式视频的EVOD系统，同时给出了基于Real技术的实现代码。     

Rails 2．0新特性之View&Route

2007年12月6日,Rails 2.0正式发布,创始人David Heinemeier Hansson(DHH)在blog上写道:Rails 2.0是Rails框架发展史上的里程碑。我投入在Ruby on Rails框架开发方面总计有四年半多的时间,并且Rails目前的开发参与者也越来越多。对这几年我们所做出的努力和坚持的信念,我感到非常的满意。David有没有言过其实呢?让我们来听听自应用Rails的一线Web开发人员的声音。     

无人能及(第一部)

3年多以来,我一直致力于打造改装车,并享受着改装所带来的快乐!自然而然,我的成绩斐然,硕果累累。试听音响系统时,业界响当当的人物都不吝其赞美之辞,包括家用音响系统设计师、IASCA前世界冠军、音响竞赛评委、音乐家和录音工程师在内,都称它是平生以来所见过的最优秀的汽车音响系统。作为一名科学家、工程师和技工的身份,我亲手进行设计和改装。IASCA的参赛选手和IASCA音质比赛的裁判。无论你即将参与或已经投身于IASCA竞赛,你只需静下心来尽情地享受美妙的音乐。我希望这一系列讨论的原则将有助于达成这一音乐目标。     

Log4J在学生管理系统中的开发与应用

Log4J可以非常灵活、方便地实现Java日志输出的各种功能,熟练地掌握Log4J可以使信息调试事半功倍。通过Log4J在学生管理系统开发过程之中的运用,讲解了Log4J的使用方法。     

Looks like magic

IT still seems to produce in people a flurry of mental imagesthat include sandals, beards and pasty faces. But that's a farcry from the sleek sophistication of an iPhone or the life-savingcapabilities of a CAT scan?     

Adapting Web content to mobile user agents

In this article, we describe an adaptation proxy we developed as a part of a Kontti research project at VTT Information Technology that lets mobile users access Web content that's not directly targeted to mobile user agents. More and more content is now available on the Internet, and there's a growing need for mobile users to be able to access it. Thus the authors describe the adaptation proxy, which lets mobile users access Web content that's not directly targeted to user agents of mobile devices. The adaptation proxy can adapt Extensible Hypertext Markup Language (XHTML) documents into XHTML mobile profile (XHTML MP) and Wireless Markup Language (WML), and can perform media adaptation. At the system's core is an adaptation framework to which new source and target XML languages can be introduced with relatively little effort.     

EVoD教育视频点播系统的设计与实现

分析了普通视频点播系统的不足，提出了一种适合于远程教育的教育视频点播解决方案并在实践中得到了应用，给出了基于QuickTime的部分代码。     

基于WINCC的水泥生产线控制系统的研究

本文主要介绍了使用西门子组态软件WINCC和PLC为控制平台,对水泥生产线的工艺过程进行电气控制的系统。全文详细的介绍了WINCC组态软件的监控方法,以及PLC控制系统的I/O点的具体配置,为水泥的生产提供了全新的控制方法。     

关联规则挖掘Apriori算法的改进

在分析研究关联规则挖掘Apriori算法及其若干改进算法的基础上,对Apriori算法做了进一步地改进,提出一种基于条件判断的新思想.改进后的算法根据条件采用了事务压缩与候选项压缩的相结合的方式,减小了不必要的开销,从而提高了挖掘速度.     

计算机围棋新构想——专访“深蓝”之父许峰雄

计算机国际象棋深蓝战胜了世界冠军曾经震惊世界,不过这个故事还没有完,计算机围棋是否可以达到相同的成就呢?这次我们请深蓝的设计者许峰雄谈谈他的想法。     

Toward Exception-Handling Best Practices and Patterns

Agreeing on a reasonable exception-handling style for your application and following a consistent set of exception-handling practices is crucial to implementing software that's easy to work with, comprehend, evolve, and refactor. Demystifying exception-handling design requires writing about proven techniques, guidelines, and patterns.     

API Keys to the Kingdom

Many Web 2.0 services offer Web 2.0 APIs for developers to use. In this article, I review one of the security mechanisms that's often included in such Web 2.0 APIs - the use of API keys - and some of the deployment issues associated with their use.     

应用于iSCSI的TOE技术分析

由于现有的计算机处理能力跟不上网络的高速发展，使众多的网络服务器以及存储设备为处理TCP/IP而不堪重负，于是TOE(TCP IP offload engine)技术被提上了日程。该文分析了基于TOE的iSCSI for initiator的实现。     

Introduction to the Special Issue: AI, Agents, and the Web

Together, the articles in this issue indicate a breakthrough in AI--as our field explores new ways to utilize intelligent systems' powerful tools on the ever-expanding, continually changing information space that's the World Wide Web. This article is part of a special issue on AI, Agents, and the Web.     

C++ Builder下循环滚动文本的一种特殊实现

本文讨论了文本多媒体循环滚动的几种实现方法，并以某监控系统的实际应用为背景，给出了按常规方法不能实现的整篇文字首尾相接，循环、平滑滚动的一种解决方案。