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1.
为迎接国际燃油销售市场日益激烈的竞争,Shell开始使用类目管理商务解决方案(CMBS),这个解决方案的基础,包括JDA的类目管理解决方案、Shell Services International的KALIDOTM数据仓库以及BusinessObjectsTM的信息访问、分析和报表工具。CMBS使Shell得以供应更好的产品、巩固品牌,利用定向促销等方式改善客户关系。  相似文献   

2.
该文介绍了TCP/IP的内容和文件传送打包过程、OD技术及LAN Workplace的组成,给出了Netware客户访问Unix主机及Unix用户访问Netware服务器的两种方案。  相似文献   

3.
OOSDM的对象模型与系统构造   总被引:1,自引:0,他引:1  
王立福  阮闯  杨芙清 《软件学报》1995,6(11):699-704
随着面向对象实现技术的快速发展,面向对象的各种软件开发方法正在相互融合,并进入实施应用阶段,从而有力地促使了这一方法逐步走向成熟,基于“青鸟工程”和现有的面向对象方法,我们提出了OOSDM(Object-OrientedSoftwareDevelopingMethod)。本文主要介绍OOSDM的对象模型──结合事件对象,以及如何以这一对象模型进行软件系统构造。  相似文献   

4.
本文介绍了怎样在Access for Windows面向对象数据库平台上,实现客户机/服务器结构,用面向对象的程序设计思想实现MIS的方法和实现MIS中应解决的关键技术问题。提出了软件综合模式的概念。  相似文献   

5.
MS—DOS 6的倍容工具DoubleSpace实现原理北京邮电大学庞其祥MS—DOS6的一个最突出的特征是提供了磁盘压缩工具DoubleSpace,用以扩大磁盘容量。运行实践表明,DeubleSpace是有效的,对于一般的磁盘文件系统可以扩大1.5?..  相似文献   

6.
本文介绍了我们研制的微机多媒体数据库管理系统MObase的基本特点。Mobase是在我们研制的微机面向对象的数据库管理系统-Obase基础上扩展而成的。Obase支持面向对象的数据模型,用户界面就是一个C++的特殊的类--Obclase,提供了和C++的完全无缝连接,系统本身用面向对象的方法实现,易于扩充。MObase中又新增了二进制串LONG及图象帧PIC FRAME等原子类以存储声音,图象等多  相似文献   

7.
本文通过对DoubleSpace的设计思想、工作原理和实现技术作系统剖析,详述了LZ算法、CVF文件结构、DoubleSpace的工作原理及其应用,并展望了压缩磁盘技术的发展方向,从而引导读者精确把握当今DOS的先进技术和发展趋势。  相似文献   

8.
《新电脑》2000,(10)
微软Office 2000中文版在今年8月底首次推出了一个更新版本 《Microsoft Office 2000增强版》(即Microsoft Office 2000 Service Release la, SR-la),该版本改进了Office 2000第一版中的许多不足。  相似文献   

9.
面向对象的WINDOWS编程技术   总被引:1,自引:0,他引:1  
王向阳  杨红颖 《软件》1996,(6):59-64,F003
本文从面向对象技术的基本概念出发,详细讨论了该技术在WINDOWS程序设计中的应用,并结合具体实例对传统的WINDOWS程序设计方法和面向对象的Object Windows程序设计方法进行了比较。  相似文献   

10.
运用Object Windows编写WINDOWS程序   总被引:3,自引:2,他引:1  
本文从面向对象技术的基本概念出发,详细讨论了该技术在WINDOWS程序设计中的应用。并结合具体实例对传统的WINDOWS程序设计方法和面向对象的Object Windows程序设计方法进行了比较。  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.
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.  相似文献   

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