基于类二叉树的圆锥型UWSNs的研究

针对水下无线传感器网络(UWSNs)能量损耗严重,节点分布不均匀无规律等现象,提出以各个水面浮标节点为顶点,构建一种圆锥型UWSNs信息网(传感器节点能根据能量大小而移动),并将其活跃节点与备选节点抽象成类二叉树结构,简化了拓扑控制与路由传递.传感器节点采集信息后,能通过活跃节点沿着类二叉树的右节点传递到浮标节点.通过Matlab实现了算法的性能仿真测试,探讨了同样水深的层数为4,6,8的类二叉树数据包传递率,结果显示:层数越多,传递率越高;将6层类二叉树的圆锥型UWSNs算法和深层路由(DBR)算法进行比较,结果显示,该算法数据包传递率高,能耗低.     

基于支撑向量机的自适应信息推荐算法

提出一种新的基于支撑向量机的自适应主动推荐算法，该算法将用户模型按照层次化方式组织成领域信息和原子需求信息，考虑多用户同类信息需求，采用支撑向量机对领域信息结点中的原子需求信息进行分类协同推荐。然后再针对每一领域信息节点中的原子信息需求进行基于内容的过滤，最后将所有领域信息需求获得的推荐集按照一定的重要度等级进行推荐．本文所提算法克服了采用单一方法的弊端而使得推荐质量得到了很大的改善，基于标准测试集的测试结果表明该算法在查全率和查准率方面表现出了优越的性能，尤其适合大规模用户的自适应主动信息推荐。     

基于整数中轴骨架的3维模型检索算法

针对3维模型检索算法性能较低的问题,提出了一种基于整数中轴骨架的3维模型检索算法。在对3维模型进行姿态调整和各向同向性预处理后,提取模型的整数中轴骨架,并记录每个骨架点相应的几何信息,对提取的骨架按不同的空间区域划分,形成模型骨架二叉树。为了能够描述骨架二叉树的不同节点对模型整体相似性匹配的影响程度,为每个节点定义一个特征权值,其大小由该节点对应的骨架区域大小所决定。最后,采用由粗到细逐步淘汰的策略计算不同模型的相似度。对一个标准3维模型测试数据库的检索实验结果表明,由于将模型的拓扑结构和统计特征相结合,该算法可以得到较好的检索性能。     

基于Clonezilla的多系统自动化测试系统的研究与设计

本文研究并设计了一种基于Clonezilla的软件自动化测试系统“HUTLAB”.该系统包含有中控节点、测试主机集群、软件信息更新模块和镜像节点四个部分.模块间通过中控节点进行通信并接受中控节点的统一调度控制.本系统通过PXE启动的方式针对多虚拟机进行系统定制,能够较好的适应软件正式发布前的build版本在不同的版本系统上的兼容性、BATS(基本可用功能性)测试以及回归测试.并在此基础之上将其应用于某公司的软件自动化测试中,通过该系统的实施,能够有效提高软件测试的自动化效率,缩短测试周期,同时减少手动测试的工作量.     

基于二叉树算法数据控制层数据库模型构建

随着信息技术的全面发展,二叉树算法在各个领域的应用越来越广泛,需要运用二叉树算法技术对数据进行数据库模型构建,提升数据信息的存取能力,通过对二叉树算法技术的应用研究,可以提升金融行业数据控制层能力。具体实施过程中采取开源框架无疑是一条捷径。但是,借鉴和使用开源框架需要结合各自的实际需求,通过分析Dataline节点的特点。把数据控制模型作为Dataline节点的研究基础,把数据控制模型的部分特点运用到实际项目中,建立数据控制模型完全支持的关系数据模型,提升数据信息挖掘能力。     

基于ATML框架的开放式TPS设计及系统应用

目前大部分测试系统软件开放性的设计取决于数据库的开放程度,而一直以来测试数据库的框架体系以及所包含的内容缺乏可依托的标准,限制了测试程序集(TPS)的可复用性和可移植性,而且维护升级耗时耗力。结合近两年逐步完善的ATML标准框架的相关内容,分别从测试需求描述、测试通道描述、测试信息描述、测试结果描述等方面建立符合统一规范的"模式"(schema),将TPS的开放性设计转化为对测试信息描述文档建立的开放性设计。同时,根据对ATS使用的权限将TPS的开放优先级按3级划分,既保证了ATS软件的正常可靠运行,又方便了TPS的维护和升级。     

标准内容动态管理器的设计与实现

本文根据现存标准管理系统中对标准内容动态维护的不足之处,针对标准动态维护的问题,提出了一种符合标准维护需求、基于标准内容的动态管理器解决方案,并对实现的关键技术做了详细论述,最后将动态管理器的思想运用到标准信息管理系统中,实现一个通用、灵活、可扩展的标准管理平台。     

基于改进FCM聚类的BT-SVM多类分类算法

针对二叉树支持向量机在多类分类问题上存在的不足,利用粒子群算法对模糊C均值聚类算法进行了改进,在此基础上,结合二又树支持向量机,构建了偏二叉树多类分类算法.该方法在二叉树各节点处根据聚类中心所对应的样本构造学习样本集和最优分类超平面,保障了聚类精度,有效地提高了测试正确率.实验表明,本文提出BT-SVM多类分类算法的测试正确率要高于同类多类分类算法.     

一种无线Ad Hoc网络中邻居管理协议的设计与实现

针对无线Ad Hoc网络系统的需求,基于VxWorks操作系统,设计并实现了一种基于多信道的邻居管理协议,用于实现邻居的发现、删除以及全网节点的连通性维护.测试结果表明,该协议能确保网络节点之间高效可靠地完成邻居管理功能.     

无线网络中一种新的数据复制算法*

介绍了静态数据复制算法,并针对无线网络提出了基于主节点的动态数据复制算法,该算法可根据主节点所收集的信息的变化重新构架网络二叉树,它比静态算法更能满足无线网络节点变化的需要.     

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     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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。