CORBA技术在Delphi中的实现

文章讨论了CORBA技术在Delphi5开发平台中实现的原理和机制,并通过创建一个Delphi/CORBA实例说明了用Delphi5来开发CORBA应用程序可大大的简化开发过程,缩短开放周期。     

CORBA技术在Delphi中的实现

本文讨论了CORBA技术在Delphi5开发平台中实现的原理和机制,并通过创建一个Delphi/CORBA实例来说明用Delphi5开发CORBA应用程序可大大地简化开发过程,缩短开发周期。     

COM和CORBA桥接的实现

介绍了COM和CORBA这两种分布式应用平台的不同特点,从理论上阐述了这两种用平台互操作的可行性。当建立一个分布式对象解决方案时,COM和CORBA都有其各自的优点,COM是组件体系的主流,CORBA是远程体系结构主流。只有清楚认识到每种技术的优点才能在任何情况下做出合适的选择。为了使COM和CORBA的优势都得到发挥,可以让COM和CORBA对象实现互操作,即实现COM和CORBA的桥接。最后给出一个在Delphi下实现的一个COM和CORBA桥接的简单例子,说明如何在Delphi中实现COM和CORBA的桥接。     

CORBA中OAD的研究与实现

本文对基于Delphi6的CORBA作了简单的介绍,着重分析了OAD的原理,并进一步介绍了“不使用Smart Agent,如何使用OAD”的技术及原理。     

COM和CORBA桥接的实现

介绍了COM和CORBA这两种分布式应用平台的不同特点,从理论上阐述了这两种用平台互操作的可行性.当建立一个分布式对象解决方案时,COM和CORBA都有其各自的优点,COM是组件体系的主流,CORBA是远程体系结构主流.只有清楚认识到每种技术的优点才能在任何情况下做出合适的选择.为了使COM和CORBA的优势都得到发挥,可以让COM和CORBA对象实现互操作,即实现COM和CORBA的桥接.最后给出一个在Delphi下实现的一个COM和CORBA桥接的简单例子,说明如何在Delphi中实现COM和CORBA的桥接.     

多层Client/Server模式的系统设计和软件开发

基于多层结构的分布式系统对C/S应用程序的开发需求不断增长。Delphi既支持微软的Windows分布式Inter-net应用程序体系结构(Windows DNA),也支持CORBA。介绍了实现多层应用服务的体系结构、组件层次和连接协议,并介绍了Delphi用DCOM连接的服务的开发技术实现过程。     

Delphi中三层结构与CORBA的应用研究

三层结构和CORBA相结合是目前分布式系统的主要应用结构。首先说明了Delphi 5对三层结构和CORBA技术的支持机制 ;然后阐述了以CORBA为中间件的三层结构的典型构建过程 ,并介绍了应用实例     

CORBA技术在网络层管理中的应用

利用Inprise公司的CORBA产品VisiBroker和Delphi开发的网络层管理软件的开发过程,阐述了如何在TMN中应用CORBA技术来解决分布式异构环境下的互操作问题。     

CORBA技术及其在Delphi中的实现

CORBA是OMG提出的一种面向对象的分布式计算平台.介绍了CORBA的技术原理,作为该技术的实例,在Delphi中编写了一个客户机/服务器的应用程序.     

CORBA技术及其在Delphi中的实现

CORBA是OMG提出的一种面向对象的分布式计算平台，介绍了CORBA的技术原理，作为该技术的实例，在Delphi中编写一个客户／服务器的应用程序。     

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.