教科网SaaS教育管理平台的设计

通过Saa S和广州市教科网的简要介绍,针对教科网内用户众多、业务需求相似度较高的特点,提出构建基于Saa S模式的教育管理平台,并对平台的服务模式、功能、架构、数据库和优势进行了阐述。希望能为教育行业在开展信息化建设和提高教科网使用效率方面提供借鉴。     

基于SaaS模式在线考试系统的研究与实现

为满足不同区域的考试机构可以直接通过浏览器进行在线的考试安排、管理、监考等需求,研究Saa S模式的考试架构以及举行全国性的网络考试时产生的高并发数据运算与数据交互的解决方法,构建基于Saa S模式的在线考试系统。本文结合Saa S模式以及SOA架构的优势特点,对系统的整体架构和功能模块等进行了探讨与分析,并就系统的实现作了简单介绍。     

基于SaaS模式运维管理平台的研究与实现

文章基于Saa S(Software as a Service)模式理念,以国内现行IT服务运维系统为研究对象,以ITSS为基础,进行统一研究与分析,构建了统一平台下支持多类型用户使用的基于Saa S模式的IT运维平台。该平台为用户提供符合国家标准的IT服务运维平台,可以节省大量用于购买硬件设备、技术支持和维护运行的资金。并且使得原来分散在不同区域多个机构孤立的信息有了信息共享的条件,使得用户能对分散在不同地方的IT系统进行控制、并及时了解相关信息。     

SCADA系统在污水处理中的应用

利用远程通信构成分级计算机监控系统(SCADA)，实现污水处理的本地控制和远程控制中心的集中监控与调度。针对污水处理系统的特点与要求，对系统结构、通信方式、硬件配置和监控组态软件进行了设计。该系统投入实际运行表明，效果良好。     

物联网云平台环境下的手机远程监控系统设计

污水处理系统的设备参数和设备状态是影响污水处理效果的重要因素。但是传统的污水处理监控系统只能在特定的地点对污水处理设备进行监控,使得监控系统的灵活性和实时性大大受限。针对传统污水处理监控系统灵活性低、实时性差的问题,设计了一种物联网云平台环境下的的手机远程监控系统。以手机微信为远程监控平台,物联网云平台作为数据传输桥梁,G781-DTU为数据传输单元,PLC为现场设备控制单元,对污水处理监控系统进行了软硬件的设计和开发,使该系统具备实时采集和存储多传感器节点信息、手机微信客户端实时显示系统组态画面和设备参数以及远程控制的功能。系统实测结果证实,该系统增加了灵活性和实时性,实现了手机微信客户端对污水处理系统设备的实时远程监控,能够较好地满足应用需求。同时,测试结果表明了物联网云平台与手机微信的结合必将成为未来物联网发展的方向。     

基于即时通信的安全保护策略

分析了IM面临的主要安全威胁及其特点,阐述并借鉴了现有的解决方案,提出了一套即时通信(IM)安全保护策略,利用公钥基础设施机制、“安全套接字层”、CAPTCHA等技术,通过加密、签名、验证签名、解密、CAPTCHA验证和IM消息流量监控等方法,保障了IM的连接安全和数据交换安全,保护了IM系统的配置信息和通信记录,减轻了病毒和蠕虫的威胁。     

基于SaaS模式的家居营销服务平台

针对中小家居销售企业营销管理中集中信息服务的问题,结合基于软件即服务模式(Saa S)的家居营销服务平台,研究整体架构服务层次的中小家居企业信息服务的Saa S架构体系。针对业务处理过程中信息公布集中和业务处理分离的特点,提出基于Portal的服务发布和基于模型驱动思想的多租户服务处理方法。在信息发布模块,系统采用了可配置内容引擎的个性化展现方法,有效地处理了信息展现的差异性需求。同时,在多租户业务模型方面,采用了多租户数据设计模型和统一的数据处理接口,有效地解决了多租户数据共享和分离的问题。     

基于云计算技术的城市轨道交通信息系统统一开发测试平台应用架构浅析

基于云计算技术和SOA架构,从基于建立虚拟化的基础设施服务(Iaa S)和SOA架构下的统一软件项目管理应用服务(Saa S)入手,搭建城市轨道交通信息系统统一开发测试管理平台。通过整合资源、规范管理,提高城市轨道交通信息系统软件平台的可靠性、交付质量和过程管理能力。     

煤层气车载钻机远程监控系统设计

针对现有钻机远程监控系统存在通用性不强、安装不便、通信抗干扰能力弱等问题,设计了一种煤层气车载钻机远程监控系统。该系统由车载终端、后台服务器和监控管理平台组成,车载终端通过CAN总线实时采集钻机运行状态数据,并通过TCP/IP协议将数据上传至后台服务器,监控管理平台采用B/S架构,通过HTTP协议访问后台服务器数据并显示钻机运行状态。应用结果验证了该系统的有效性。     

基于安卓手机客户端与服务器的污水处理监控通信系统研究

针对偏远地区工业污水处理实时远程监控和供电问题,基于安卓系统提出一种客户端/服务器的实时监控通信系统。系统以现场级的总线系统为基础,客户端的远程实时访问为目的,小型光伏发电系统为供电系统,解决了厂区边远地区的供电问题,并通过建模仿真验证了供电的可靠性。通过程序设计的安卓手机客户端,即可实时监控污水处理设备状态及工艺参数,实现了偏远地区污水处理工艺的实时监控,并保证了该系统的可靠运行。     

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。     

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。