基于传感器网络与RFID的车载危险品监控系统

本文综合无线传感器网络与RFID技术的优点,提出了一种基于传感器网络和RFID技术的在运危险品监控系统,并详细介绍了系统的软硬件设计与实现。该系统对于运输重要物资或危险品的车辆,能够实现对物资信息和车辆上重要数据的实时监测、校准、记录和传输等功能。     

一种自动跟踪的智慧物流信息处理系统的设计

为了实现对物流货品的跟踪溯源、车辆的实时监控和物流信息的采集处理,设计以ARM微控制器为硬件核心,通过RFID技术记录物资的包装、仓储、运输等全过程,结合GPRS网络将采集到的物资信息传送至监控平台实现远程监控,用户可以登陆平台实时获取物流车辆的运输情况、地理位置、物资信息。测试结果表明,系统稳定可靠,能够实现物流的全程跟踪、实时监控、信息传送等功能。     

海产品冷链物流监测系统设计与实现

针对海产品运输环节实时监测的需要,利用无线传感器网络部署方便、成本低、低功耗等特点,设计出能有效监控海产品冷链物流运输全过程的系统.该系统设计实现了超低功耗测量终端,能对对车厢内的温湿度进行检测无线传输功能;实现了无线网关系统,利用北斗定位系统、加速度计、GPRS等设备实现了对车辆状态的监控以及监控信息的转发和传输功能;利用GIS技术实现了车辆在地图中的显示的服务器系统.     

无线传感器网络在智能公交中的应用

基于无线传感器网络构建成的城市公交实时信息采集系统,实现对城市公交的智能调度与定位.根据网络设计相应的传感器节点,编写相应的软件,实现公交车自动报站和电子站牌车辆信息显示功能.无线传感器网络技术与当前在智能公交系统中采用的GPS技术相比,本系统具有更高的性价比.     

基于ZigBee的网域车辆监控系统的设计

为了实时监测、捕捉重要区域内的各种监测信息,从应用角度出发,提出了一种基于ZigBee的远程网域车辆监控系统的实施方案,车辆终端的网络可控节点采用了基于无线微控制器JN5121与DSPIC33F的双核体系架构,并利用无线传感网络技术以及监控系统与子节点之间的通信协议对局域网内行进车辆进行调度、速度和姿态的监控和反控停车等操作。实验结果表明,该方法提高了网域控制的灵活性和复用率,在无人监控、目标监测等场合有较高的实际应用价值。     

面向鲜食葡萄冷链物流的无线实时监测系统

为了保证鲜食葡萄冷链物流过程中的质量安全,提高冷链物流过程透明度,以ZigBee协议为基础,围绕CC2530型无线传感片上系统,设计了面向鲜食葡萄冷链物流的无线实时监测系统。系统包括集成温湿度传感器和SO2传感器的传感器节点、用于建立和维护ZigBee网络与数据汇集的协调器节点以及用于远程实时监控的远程监测系统,同时在模拟葡萄冷链环境(0℃恒温)下对系统进行了测试。结果表明,监测系统能够很好地应用于鲜食葡萄冷链物流过程;传感器节点在恒温0℃时工作可靠,且能够稳定、准确地监测冷链环境温度、相对湿度及SO2浓度等关键参数的变化过程。     

基于无线传感器网络的钻井井场监测系统

无线传感器网络已经广泛应用于工业监控领域,本设计在无人值守作业条件下,能够连续监测钻井井场各种信息的系统.运用无线传感器网络技术设计了泥浆压力、温度、硫化氢等传感器节点,实现现场信息采集,运用优化理论设计的数据传输协议完成数据的高效传输.各无线传感器节点采用锂电池供电,体积小,监控中心观察到的井场信息能够实时反映现场的状态,实现数字化油田.     

基于智能定位技术的无人物流车辆智能监控系统设计

传统的无人物流车辆智能监控系统监控图像清晰度差,监控速率慢。为了解决上述问题,基于智能定位技术设计了一种新的无人物流车辆智能监控系统,系统硬件传感器模块选用选用MCJS系列角度传感器,无人物流车辆定位模块选用ZM516X定位模块,支持Mesh网络,监控平台为LAND-LDRTU款无线远程监测终端RTU,内部配置实时监控系统,在C/S模式下设计应用系统程序。实验结果表明,基于智能定位技术的无人物流车辆智能监控系统监控图像清晰度高于传统监控系统42.58%,监控速率高于传统监控系统17.22%。     

一种无线传感器网络定位系统的设计与实现

随着计算机和网络技术的快速发展,对于运算以及管理和控制要求更加精细。虽然无线传感器网络有很强的应用相关性,但在无线传感器网络的应用中对定位的要求都很普遍。本文基于无线传感器网络实现了一般环境下的人员定位系统,能够进行地图的实时更换,锚节点的部署,移动节点的跟踪定位,相关人员信息的管理,人员的实时监控和定位。这对于锚节点固定,未知节点在已布设锚节点区域内随机移动的应用环境都可以借鉴和使用。     

基于WSNs的设施农业环境远程监控系统设计

针对现有设施农业环境远程监控系统的不足,对其监控方案进行改进,将无线传感器网络和嵌入式技术相结合,设计了基于CC2530的传感器节点软硬件结构和基于S3C2440的嵌入式设备的软硬件结构。设计了基于改进蚁群算法的路由协议。实现了对监测区域的环境信息的实时、可靠地采集和传输。实验结果表明：该系统在实现传统监控功能的基础上能够提供给用户更直观的信息显示、具有移动监控的功能、系统的成本低并且网络能耗负载均衡。     

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.