校园网格计费系统的设计

提出一种校园网格计费系统的设计方案,该方案根据校园网格的特点．将现有的三类网格计费的经济模型综合应用于校园网格的计费过程。文中介绍了校园网格计费系统的组成结构,各个模块的功能和工作流程,并详细讨论了网格使用费用的计算问题。     

校园网格计费方案的研究

通过对校园网格系统工作原理的介绍,提出了一种校园网格计费方案。对校园网格计费系统所涉及的计费项目、费用度量、资源置换等问题做了具体的说明,并对计费方案的执行过程做了详细的介绍。     

基于校园网格系统计费方案研究

对网格中资源的管理、组织和分配是校园网格的关键问题。首先在介绍了校园网格资源管理模型的基础上,讨论了校园网格系统中需要进行付费的资源,然后提出了一种校园网格计费方案,该方案可为校园网格计费系统的具体设计提供一定参考。     

校园网格计费系统与实现

现在每个高校的校园网格由大量的计算机组成,整个网格的资源是非常丰富的,我们应该充分利用彼此的资源和信息,推动技术进步和学术交流。本文提出了一种网格计费的系统结构、计费策略,并讨论了存在的问题。     

基于OGSA的网格计费系统

介绍了基于开放网格服务体系结构(OGSA)的山东大学网格计费系统－—SDUGAS，该系统主要致力于解决网格环境下异构资源使用的记账和计费问题，为用户和管理员提供良好的网格服务，在此基础上大力提高网格资源的利用率。山东大学网格计费系统的设计和实现以OGSA为标准，充分考虑了网格环境下系统的可扩展性和可移植性，强调在网格环境下数据描述的一致性和系统集成安装的易操作性。介绍了SDUGAS的体系结构、实现的基本原理和方法、资源信息的采集过程、资源预订、资源的价格策略以及网格银行的设计与实现等内容，给出了一个SDUGAS记账和计费过程的简单实例。     

重庆邮电宽带新思路

重庆邮电学院拥有先进的网络系统,学生在宿舍就可方便上网,校园网络需要一套既可计费又可管理的系统。为了使用与管理的方便,以及保障系统的安全,学院主管部门对计费管理系统有极高的要求。 需求源于费用 为了便于管理,学院要求总计费统计功能要详尽:一个时间段内所有用户共加了多少钱、用了多少钱、所有用户每人各剩多少钱、共剩多少钱等信息要能方便地查询到。同时,学院希望在增加用户和添加费用时可使用批处理方式,如导入数据文件进行增加用户和用户费用操作,以面对大量新生入学时新建账号的需求。并且,学院希望系统可以详细记     

AAA服务器在流媒体系统中的应用研究

AAA指的是athentication(认证)、authorization(授权)、accounting(计费)。自网络诞生以来,认证、授权和计费体制就成为其运营的基础。网络中各类资源的使用,需要认证、授权和计费进行管理。在确认用户身份后,根据用户开户时所申请的服务类别,系统可以授予客户相应的权限。最后在用户使用系统资源时,需要有相应的设备来统计用户对资源的占用情况,据此向用户收取相应的费用[1]。论文的主要工作是完成AAA服务器的设计和在RADIUS协议下,设计RADIUS认证/授服务器结构,通过对这种结构的分析及进一步的改进,其测试结果表明服务器结构的设计和实现能够满足流媒体系统实时管理,使得系统计费准确,对系统进行了测试,基本达到研究目的。     

综合业务宽带网络计费系统的研究与实现

根据网络技术的发展需要,从计费系统的目标出发,介绍了综合业务宽带网络多策略计费的基本思想,根据影响网络计费的主要因素对计费单元和计费策略进行了讨论,提出了计算用户费用以及衡量用户和系统收益的方法,并结合实际工作介绍了综合业务宽带网络计费系统的设计与实现。     

校园网格平台的研究

随着校园网络资源的快速增长,结合黄淮学院校园网资源现状及管理需求,阐述了校园网格的设计思路与方案,设计了面向服务的校园网格系统拓扑结构,构建了面向服务的层次系统架构及服务访问模型,为用户提供统一透明的网格服务。最大限度地避免了信息孤岛的局限性。     

网格资源管理系统模型的研究

针对已有模型不能实现更多范围内获取所需要的资源,提出了一个改进的通用抽象体系结构模型,通过接口向网格资源管理系统发布、获取自己所需要的资源,实现用户在更大范围内获取所需要的资源.创建了该模型的原型系结构模型,通过接口向网格资源管理系统发布、获取自己所需要的资源,实现用户在更大范围内获取所需要的资源.创建了该模型的原型系统的网格,并在该网格上进行了一些算法研究.实验结果证实了该实践中的可行性和优越性.     

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.