基于网络中心战的空战仿真多Agent理论实现

概述了基于网络中心战的空战网络结构和系统特性,讨论了基于网络中心战空战多Agent系统结构,分析了基于网络中心战的空战想定、组织结构和空战过程,利用分布式多Agent系统理论对其进行了描述,实现了多Agent系统理论的空战过程仿真模型;仿真结果表明,基于网络中心战的空战飞机的作战效能优于基于平台中心战的蓝方作战飞机,赢得了先发射导弹的机会,提高了导弹武器系统的杀伤概率。     

命令模式下的智能UUV模型设计

多智能UUV编队作战时,接收到上级的命令后,应以上级命令为中心根据环境信息采取行动完成任务。通常的Agent模式以个体意识为中心,不适合这种以命令为中心的UUV建模。本文结合近年来Agent理论的研究成果,通过对军事作战中命令体制的研究,提出一种基于命令的Agent模型组织结构,给出了该模型的形式化语言描述,并构建了基于命令机制的智能UUV模型,实现了基于MAS的多UUV机群作战仿真系统。为构建基于MAS的水下网络中心战系统提供技术支撑。     

网络中心战初探

随着信息技术的快速发展，20世纪末开始酝酿一场新的军事革命——网络中心战（NCW，network centric warfare）。信息化战争将从“平台中心战”转向“网络中心战”，网络中心战将成为未来信息化作战的主要作战方式。论述了网络中心战的概念、网络中心战的网络结构和作战结构，介绍了美国网络中心战现状，分析了当前制约美国网络中心战发展的因索，筒述了计算机在网络中心战中的地位和作用。     

传感器网络与网络中心战

网络中心战将成为未来信息化作战的主要作战模式,而传感器网络是实现网络中心战的技术关键.本文介绍了网络中心战的基本概念和构成,讨论了传感器网络的基本结构和功能.     

透视美军网络中心电子战

在研究网络中心战特点的基础上,提出了网络中心电子战的概念。本史详细阐述-『网络中心电子战核心作战概念和网络中心作战的概念模型,并对美国网络中心电子战的发展进行了论述。     

网络中心战概念下的舰载多平台综合电子战系统设计

本文简述了网络中心战的概念及由来，分析了网络中心战概念对海上作战的影响，着力阐述了网络中心战概念下舰载多平台综合电子战系统设计所应考虑的主要内容。     

Jini技术在网络中心战中的应用

介绍了网络中心战的实质、全球信息栅格及其在实现网络中心战中的重要性.为了有效促进网络中心战的建设,分析了基于Jini的信息栅格组网的可行性,提出将Jini技术应用到网络中心战中.在信息栅格环境下,将Jini技术应用于网络中心战是一个崭新的理念,其目的就是利用Jini即插即用、自管理和自愈合的特性,不仅可实现作战实体的"硬"连接,而且可实现"作战程序"、"运行机制"的软连接,从而最终实现由传感器到射手的无缝连接.     

空地作战指控系统效能评估仿真研究

关于空地作战指挥系统效能,是形成战斗力的重要表现.研究信息因素、协作因素将是研究网络中心战环境下空地作战指控系统效能的重点.通过结合总结性评估的方法(MOE)和形成性评估的方法(MOP),在假定的情景下,分别仿真计算"平台中心战"和"网络中心战"两种不同作战环境下的空地作战指控系统的系统延时和作战效能.通过分析对比不同...     

基于Agent的空防作战系统建模仿真方法研究

空防作战系统是一类复杂的军事作战系统.从军事作战系统的主导因素入手,讨论了传统研究方法的局限性,进而提出使用基于Agent的建模仿真(ABMS)方法研究空防作战系统的思路,并根据空防作战系统建模仿真应用的需要对ABMS进行了改进:建立了层次化的ABMS建模框架,为解决对作战动态过程的建模而引入了事件的扩展概念及其分析方法.然后介绍了一个空防作战系统建模仿真研究的完整过程,给出了系统动态演化的事件模型和作战单元的Agent模型,并针对仿真结果进行了分析;从而证明了ABMS方法的可行性和有效性.     

陆军网络中心战模型研究

随着网络技术的不断发展,部队的指挥与控制手段信息化程度得到大幅提高.尤其是一些高新科技武器装备的运用,使以网络为中心的作战成为可能.从最近的几场局部战争中也可以看出,美军充分利用信息优势,对敌实施致命的打击,并通过网络调动各种作战力量,把信息优势转化为取得胜利的战场优势,从而取得战争的胜利.为了适应现代信息化战争的需要,提高我陆军的通信与作战指挥能力,以美军实践为鉴,提出构建符合我陆军特点的网络中心战模型.首先介绍了陆军网络中心战的概念和特点,其次构建了陆军网络中心战的体系结构,最后分析了模型构建的策略.     

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.