基于模糊数和熵权的通信安全设备方案选型方法

利用模糊数运算理论和熵权的概念与方法,对通信安全设备方案选型进行分析。采用三角模糊数来建立判断矩阵和专家评判矩阵,改进了AHP方法。根据水平截集和乐观指标,进行模糊区间运算。并依据熵权的计算确定各论证指标的权重,运用模糊综合评判方法对通信安全设备方案选型进行分析和评判。实例分析结果验证了方法的有效性与可行性。     

工业控制系统信息安全风险评估量化研究

为解决工控系统的信息安全风险量化评估问题,提出了基于模糊层次分析法的工业控制系统信息安全风险评估方法。结合工控系统特点,构造了层次结构模型,引入了模糊一致矩阵计算各要素相对重要性权值,克服了层次分析法需多次进行一次性检验问题;自下而上对工控系统风险进行模糊综合评判,并将评判结果反模糊化,得出了风险的精确值。实例表明,该方法能合理有效地量化控制系统风险,为工业控制系统风险管理决策提供了依据。     

AHP与FUZZY在软件开发项目风险管理中的综合应用

归纳了软件开发项目的几大常见风险,在此基础上,通过集成层次分析法AHP和模糊综合评判法FUZZY的原理和模型,设计出软件开发项目风险评价的指标体系,并运用Delphi方法,让多名专家对各项指标赋权而得出每个指标的权重,之后通过风险因素U到模糊评判评语集V的模糊映射,得到模糊评估矩阵。最后根据FUZZY理论,运用模糊矩阵的合成运算,对软件开发项目风险进行两级评估,从而构建了集成方法下软件开发项目风险评价的过程和模型。结论对软件开发项目管理者具有实际参考价值。     

基于熵权-可拓理论的高炉软熔带位置状态模糊综合评判方法

针对高炉(Blast furnace, BF)软熔带位置状态影响因素复杂多样且具有层次性和模糊性的特点, 提出了基于熵权--可拓理论的高炉软熔带位置状态两级模糊综合评判的新方法. 首先,在对高炉生产过程参数进行整理、分类的基础上, 采用可拓理论和熵权法确定第一级评判的隶属矩阵和模糊权向量, 进行一级模糊评判. 其次,以一级评判结果矩阵构成第二级评判的隶属矩阵, 并结合层次分析法(Analytic hierarchy process, AHP)确定的第二级模糊权向量, 进行二级模糊评判. 利用物元的可拓性定性分析和可拓集合论的关联函数定量计算相结合的方法, 实现对高炉软熔带位置状态的两级模糊综合评判. 最后,以某钢铁厂2650m3高炉为实例对其软熔带位置状态进行综合评判, 所得结果与现场实际情况吻合良好.     

航天测控系统容灾能力评估方法研究

航天测控系统容灾能力评估是建设航天测控容灾系统的关键环节.通过对航天测控系统容灾能力评估因素进行深入分析,建立评价指标体系,利用层次分析法(AHP)确定各指标的组合权重;利用模糊评判方法建立模糊评判模型,计算容灾能力的综合评判值并做出决策.按照以上方法评估,航天测控系统的总体容灾能力等级是“较强”,但在灾难恢复管理、灾难恢复规划及灾难恢复技术措施等方面还需提高.结果表明,通过将层次分析法和模糊评判方法相结合对容灾能力进行评估,可以为容灾建设提供合理参考依据.     

基于评估流程的信息安全风险的综合评估

对信息安全风险评估提出了一种新的评估方式。根据风险评估流程,采用模糊综合评判法和AHP方法相结合的方法,对信息系统安全风险进行综合评估。采用模糊综合评判的方法,对资产、威胁、脆弱性进行评估,判断资产的风险等级,求出资产风险值,对系统风险进行定量评定。在评估资产时,对资产的安全特性：机密性、完整性、可用性,采用AHP的方法,构造比较判断矩阵,求出各因素的权重。通过实例验证,该方法操作方便,评估结果准确,具有一定的实际意义。     

通信星座弹性评估权值确定方法研究

太空环境日益复杂，通信星座的全球覆盖、超视距通信等优势使其具有极高的存在必要性。为保证通信任务的可靠性，开展通信星座弹性评估研究，为建设弹性通信星座提供参考。针对通信星座弹性意义及特点，构建通信星座弹性评估指标体系，并对权重赋值问题进行分析，确定数学模型。针对层次分析法在判断矩阵一致性差时求解特征值困难的不足，提出采用生物地理学优化算法求解权值问题。通过对BBO算法中的迁移机制、迁移算子和突变机制进行改进，实现了判断矩阵排序权值与一致性的统一。并与基本BBO算法、GA算法、GA-PSO算法、AHP算法进行比较验证，结果表明改进BBO算法在收敛速度、优化精确性以及局部寻优能力方面较优。随后，采用改进BBO算法对通信星座弹性评估指标体系权值进行分析计算，得出通信星座弹性评估指标体系权重，可为后续通信星座弹性评估提供一定帮助。     

FAHP在用户行为信任评价中的研究

针对层次分析法（AHP）的缺点,提出了一种基于三角模糊数的模糊层次分析法,该评估方法通过使用模糊数来反映专家评判的模糊性,弱化了单纯使用AHP方法存在的主观性,并对网络用户行为各属性的权重进行量化计算,使评判结果更加客观,通过实例说明如何在实际中应用该方法。评价结果为基于动态信任的安全控制提供量化分析基础,为服务提供者采取更加安全的策略来响应用户请求提供量化依据。     

北斗导航业务处理系统的评估

考虑到影响北斗导航业务处理分系统评估的因素具有一定的模糊性和不确定性,提出了一种基于模糊综合评判的方法.首先确定影响该系统评估的各种因素,然后将各种因素的评价集构造成模糊综合评判矩阵,并利用Delphi方法确定因素重要程度模糊集,最后应用加权平均模糊综合评判模型完成对系统的评估.通过仿真实验证明,方法能够得出较为客观准确的评估结果,因此,对国内的北斗导航定位系统后续的发展具有重要的指导意义.     

一种软件实用性模糊评估方法

软件的多样性使用户很难选择适合应用需求的实用软件,本文给出软件实用性定义并对其属性进行深入分析,提出一种基于AHP(层次分析法)理论的软件实用性模糊评估方法,将AHP方法与模糊评判法则相结合.建立应用需求驱动的实用性指标树动态构建模型,设计具有动态扩展性的实用性指标数据库,建立软件实用性模糊评估过程模型,详细阐述指标分级模型框架和基于AHP的软件实用性模糊评估方法.最后,结合“Trustie协同开发平台在电力行业生产管理系统开发中的应用”项目予以验证.     

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。     

基于QTE的蒙古文显示机制研究与实现

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。