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1.
A 在B/S架构的信息管理系统中,常包括数据信息的查询作,而这个操作的实现,一般是在客户端浏览器中的一个页面表单编辑框中输入要查询的数据信息,再单击表单中查询按钮或超链接,向服务器提交输入的数据信息,然后服务器执行数据库查询操作,并将查询结果以网页形式返回给客户端的浏览器,最后浏览器加载结果网页,显式查询结果。  相似文献   

2.
在B/S架构的信息管理系统中,常包括数据信息的查询操作,而这个操作的实现,一般是在客户端浏览器中的一个页面表单编辑框中输入要查询的数据信息,再单击表单查询按钮或超链接,向服务器提交输入的数据信息,然后服务器执行数据库查询操作,并将查询结果以网页形式返回给客户端的浏览器,最后浏览器加载结果网页,显示查询结果。为避免网页重新加载,  相似文献   

3.
近年来,云计算的发展为数据中心带来了新的应用场景和需求.其中,虚拟化作为云服务的重要使能技术,对数据中心服务器I/O系统的性能、扩展性和设备种类多样性提出了更高的要求,沿用传统设备与服务器紧耦合的I/O架构将会导致资源冗余,数据中心服务器密度降低,布线复杂度增加等诸多问题.因此,文章围绕I/O资源池化架构的实现机制和方法展开研究,目标是解除设备与服务器之间的绑定关系,实现接入服务器对I/O资源的按需弹性化使用,从根本上解决云计算数据中心的I/O系统问题.同时,还提出了一种基于单根I/O虚拟化协议实现多根I/O资源池化的架构,该架构通过硬件的外设部件高速互连接口多根域间地址和标识符映射机制,实现了多个物理服务器对同一I/O设备的共享复用;通过虚拟I/O设备热插拔技术和多根共享管理机制,实现了虚拟I/O资源在服务器间的实时动态分配;采用现场可编程门阵列(Field-Programmable Gate Array)构建了该架构的原型系统.结果表明,该架构能够为各个共享服务器提供良好的I/O操作性能.  相似文献   

4.
本文是一个新闻发布管理系统的开发设计说明。该系统运用B/S(浏览器/服务器)模式架构,采用ASP作为主要开发语言,数据库以SQL SERVER 2000建立关系型数据库管理系统,利用Macromedia Dreamweaver MX 2004搭建后台管理框架。前台用户通过网页浏览查看新闻信息,后台管理主要实现新闻的发布、修改、删除,新闻类别的添加、删除,管理用户的添加、删除、用户权限的设置等功能。后台相应地划分了主界面模块、新闻发布模块、新闻类别管理模块、新闻模板管理模块、用户管理模块等。  相似文献   

5.
目前很多图书管理系统还采用C/S模式,用户不能像在B/S模式下那样通过网页方便的进行图书借阅信息查询、续借、预借等操作,也给同城各图书馆之间互联共用系统增加难度,为解决这一问题,设计并实现了一个基于Struts2B/S模式的图书管理系统,使用者采用网页登录的方式就可以方便的进行图书管理或借阅信息查询等操作,同时为实现各图书馆之间的互联提供方便。  相似文献   

6.
随着社会的急遽发展、新功能的不断拓展,传统的中心机房管理模式已经跟不上时代的要求。采用虚拟化技术,在一台高性能多核服务器上创建多个虚拟机,藉此来完成传统方式下多台物理服务器才能完成的工作,是中心机房虚拟化架构系统得以实现的基础。一套完整的中心机房虚拟化架构系统由若干个物理服务器上安装的虚拟化主机程序、一个数据存储系统、一个集中管理平台三部分组成,这三部分紧密合作,为虚拟服务器稳定、高效、安全的运行提供了坚实保证。虚拟化技术作为一种新兴的计算机技术,是对技术、操作、应用、管理,甚至是理念的根本转变。打造虚拟化技术下的中心机房管理模式,必将成为未来发展的趋势,具有广阔的应用前景。  相似文献   

7.
C/S模式是早期的开发网页服务器架构,它使用复杂、成本高并且缺少通用性.B/S模式通过将系统功能集中到服务器中弥补了使用复杂成本高的缺点,但是没有对用户端的环境和数据传输率进行深入测试和研究,使得过多的外部用户访问网页,给服务器带来压力.针对传统C/S模式和B/S模式的局限性,引入Docker容器化开发思路,分别融合N...  相似文献   

8.
文中基于.NET平台设计了一个将实现标准库存管理和仓库业务流程的仓库管理系统,实现对捐赠物资、应急物资的数字化、网络化管理.本文阐述了系统的研究目标,及功能架构.并根据研究目标提出设计方案,其中包括系统的结构、硬件的部署和数据库的设计.随后,进行软件的设计和开发.软件主要包括:客户端应用程序开发和服务器端开发.软件开发完成后就系统采用的C/S和B/S两种体系结构,配置服务器,并将程序部署到服务器.最后,系统进行了现场的应用及操作,运行结果表明,系统安全可靠,大大减少了仓库管理的人力物力、和财力,实现了对物资的数字化管理.  相似文献   

9.
郑豪  董小社  王恩东  陈宝可  朱正东 《软件学报》2014,25(10):2235-2250
利用虚拟化技术来整合资源已成为高性能服务器提高资源利用率的重要手段,虚拟化技术的可靠性对于高性能服务器所提供服务的质量至关重要.然而,驱动故障严重影响了虚拟机中操作系统的可靠性,也同样影响到整个服务器的可靠性.为此,提出一种在虚拟机内部通过隔离故障驱动程序来提高虚拟机可靠性的架构,该架构通过监视驱动程序所使用的内存信息来建立驱动可写权限的授权表,并在虚拟机监视器中设置虚拟机内核空间对应影子页表的写保护来捕获虚拟机的写操作,进而结合授权表判断被隔离驱动程序写操作的正确性.目前,该架构能够在无需修改驱动程序的情况下,在虚拟机内部实现对驱动程序的隔离.实验结果表明:该架构可以隔离84.63%的注入故障造成的系统崩溃失效,并且对于驱动性能的影响小于20%,提高了虚拟化环境的可靠性.  相似文献   

10.
金融实验室部署和管理B /S 和C /S 架构的软件,对服务器的数量以及服务器环境都提出了特定的要求,通过服务器虚拟化搭建的虚拟实验教学平台,可以满足金融实验室实验教学环境的需求,本文在分析服务器虚拟化原理以及VMware vSphere、Microsoft Hyper-V虚拟化产品的基础上,根据金融实验室的实际,针对虚拟化主机主要因素的分析结合影响虚拟化主机性能的因素,给出了基于虚拟化主机的选择标准。  相似文献   

11.
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.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
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.  相似文献   

13.
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。  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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  相似文献   

17.
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.  相似文献   

18.
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.  相似文献   

19.
基于复小波噪声方差显著修正的SAR图像去噪   总被引:4,自引:1,他引:3  
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。  相似文献   

20.
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。  相似文献   

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