中小型企业网络中Linux服务器的配置

基于Linux平台网络服务:Squid作为代理服务器、Apache作为Web服务器、BIND-DNS name server (bind)作为DNS服务器、Sendmail作为mail服务器、Samba作为内部资源共享服务器、mysql数据库。     

基于FPGA的数字频率计的设计

文章设计制作一款新颖实用的数字频率计。以FPGA芯片为核心处理器、以数码管作为显示器件、以74HC573作为显示驱动模块、以74HC138芯片作为作为动态扫描显示译码电路、以HCF40106六施密特反相器作为信号整形电路,以按键作为人机交互界面。设计制作数码驱动电路、显示电路、按键电路与信号整形电路等硬件电路;编程实现计数器、测频控制信号发生器、32位数据锁存器等软件模块。设计实践表明,该数字频率计具有测量既准、又快的优点。     

基于MODEM网络的自动远程监控系统

本文研发了一种利用公共市话网作为传输媒介的远程监控系统.系统采用PC机作为监控主机、PC机或者单片机作为采集单元、利用电话线作为二者数据交换与传输媒介、采用VB作为监控平台,来实现市区范围内几十个至上百个采集点的数据集中监控与应急处理.由于电话线网络通讯稳定、受干扰小、覆盖区域广且能实现无人化管理的特点,因此该系统有很大的应用前景.     

新产品＆新工具

OBM 2．3．6 OBM是一个群件、电子邮件、LDAP、Windows的PDC、CRM和项目管理应用程序。它主要用来作为Exchange或Notes／Domino的邮件服务器群和置换，可作为一个LDAP目录，作为Windows的PDC，作为联系和客户数据库，作为一个项目管理工具，或作为具有这些职能的产品任意组合。它提供群（日历，联系人和任务）连接器的Outlook、Thunderbird／Lightning和PDA等。它支持国际化主题，具有高度可扩展性。     

狠抓技术创新，提升服务能力

2009年,北京市商务领域将认真贯彻落实国家和北京市关于扩大内需促进经济增长的一系列措施,按照首都建设“人文北京、科技北京、绿色北京”的要求和建设“特色商务、数字商务、生态商务”的工作思路,积极应对国际金融危机的挑战,把保持首都市场稳定作为首要任务、把安全发展放在重要位置、把促进消费便利作为工作目标、把特色商务作为发展重点、把商务持续发展作为长期任务,     

基于 RFID-SIM 的小区无线门禁系统

针对现代小区各种智能管理系统需要多种智能卡识别给用户带来使用不便、信息不能共享等问题,结合射频识别技术、SIM 技术和 ZigBee 技术,提出将 RFID 和 SIM 集成一卡,使用手机作为统一的小区门禁、停车场等识别卡。选用 PC 作为总控制平台,2440开发板外接RFID 模块作为身份识别,GSM 模块（内含 SIM 卡）作为信息同步、ZigBee 模块作为无线网络节点,在 C2440嵌入式开发平台上,采用 QT4模拟实现实现停车场、楼宇门禁一体化管理。     

电子天平性能测试平台的设计与实现

介绍了电子天平性能测试平台的功能设计及其实现方法。测试平台采用Visual Basic作为编程工具,数据库作为存储系统,实现了数据接收、数据库存储、数据分析、实时曲线显示和建立数学模型等功能。该方法可作为改进与研发新的高精度电子天平的基础。     

基于嵌入式Linux的智能手机系统设计

介绍以Motorola MX1作为中央处理器、Wavecom公司的Q2403A作为无线收发模块、嵌入式Linux作为操作系统的智能手机系统的设计与实现。该设计可以实现GSM语音通话、GPRS上网及PDA相关应用软件等功能,具有结构清晰、易于开发等优点。     

基于PHP的新闻发布系统的设计与研究

本系统采用WAMP作为开发环境,PHP作为开发语言,EclipsePHP作为开发工具,Mysql5.0作为数据服务器,完成了一个动态新闻发布系统的所有功能,实现了对网站基本参数设置、动态新闻发布及管理、新闻类别设置,等一系列功能。系统实现了设计目标,具有较好的稳定性,安全性和容错性。     

基于ASP.NET技术通用进销存系统开发

通用进销存系统使用Visual Studio 2008作为开发工具,以C#3.5作为开发语言,用Microsoft SQL Server 2005作为后台数据库服务器。系统采用自顶向下方法开发,其功能模块主要包括基本信息模块、进货管理模块、库存管理模块、销售管理模块、查询统计模块和系统设置模块。     

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。     

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     

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.     

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.