基于GNSS的建筑物沉降监测系统设计

针对建筑物沉降监测问题,设计了一套基于GNSS的建筑物沉降监测系统。该系统由数据采集终端、监控中心、云平台及报警系统组成。数据采集终端负责监测点GNSS原始数据采集,使用GPRS无线网络将监测数据传输至监控中心。监控中心负责监测点沉降量计算,并将监测结果实时显示及推送至云端。系统采用静态相对定位技术,并对其数据处理进行自动化改进,实现对建筑物的24小时不间断监测。测试结果显示,系统具有较好的监测精度,能够满足建筑物沉降监测的需要。     

埋地管道阴极保护监测系统的研究及应用

针对人工巡查埋地管道阴极保护数据的不足,设计了一种埋地管道阴极保护远程监测系统.整个系统由数据采集终端、通信网络及监控中心构成.数据采集终端基于STC12C5608AD单片机和GPRS技术,实现埋地管道阴极保护数据的在线测量和信息的传输.监控中心的软件部分基于力控组态软件实现,完成阴极保护数据的接收、保存、管理和计算机辅助分析.整套监测系统已成功应用于某石化企业,运行结果表明该系统实时性好、可靠性高,为埋地管道阴极保护的监测提供了理论参考和实践经验.     

食品货架期监测系统的设计与实现

针对传统食品货架期指示器与条形码不能实时记录食品在流通过程中的质量参数的问题,提出并设计了食品货架期监测系统。该系统由具有无线射频信号收发功能的数据采集监测前端、监测终端和监控中心组成。实际测试实验表明,监测前端能够检测到食品的质量信息,监测终端能够将这些数据发送给监控中心,实现对食品的实时监测。     

移动远程医疗监护系统的设计与实现

提出一种基于移动设备的远程医疗监护系统方案,利用通用分组无线服务通信和加密技术,配合单片机进行系统开发。综合考虑服务端、网络传输、手机终端和数据采集端4个部分的设计,达到实时监测、诊断患者心电功能和接收反馈信息的医疗监护效果。介绍该系统的原理,给出数据采集端设计、监控中心软件设计和诊断算法。     

基于GNSS的铁路路基安全监测系统研究

为了解决路基在施工与运行时变形/沉降的安全监测问题,满足其自动化、实时性与长期性的监测要求,设计了基于GNSS的铁路路基安全监测系统.该系统通过收集高精度卫星定位信息,采用相关函数和模糊综合处理对铁路路基水平位移与垂直沉降进行实时监测.采用GPRS网络实现监测终端与远程控制中心的通信,满足远程数据传输与命令控制要求,同时采用短信息方式实现对监测终端无响应的应急处理,提高系统可靠性.经山西中南通道重载铁路监测实验表明,系统能长期对铁路路基的位移/沉降进行实时监测,并能合理分析出路基的变形趋势,从而提高了铁路路基监测的自动化水平,同时监测误差精度达到1～2 mm,满足了铁路路基位移/沉降的监测要求,为铁路路基安全监测提供了可靠的监测与监控手段.     

一种新型矿用车载信息终端设计

为了满足煤矿日益增加的信息化需求,设计一种矿用车载信息终端.与现有车载信息终端相比,该信息终端结合无线网络和可视倒车雷达,实现地面监控中心对机车行驶情况的实时监测,并为驾驶员提供倒车视频影像等功能,提高了机车行驶的安全性能.     

基于Cortex—M3和GPRS的嵌入式油井远程监测系统设计

油井监测是保证油井正常生产的重要工作之一,油井无线监测系统由嵌入式无线数据采集终端、GPRS无线中继站和监控中心组成,从而形成了完整的油井远程无线监测网络;它将短距无线通讯技术和基于Cortex-M3内核设计的数据采集系统结合在一起,实现了重要生产数据采集、处理及远传。     

GDUT2508远程配电变压器监控系统设计

本文介绍了一种基于GPRS Modem的远程配电变压器监控系统--GDUT2508监控系统,系统由监控中心和多个终端组成。采用GPRS通信方式,通讯速率高、费用低、组网方式灵活。终端对配电变压器的运行进行实时监测和控制,实现无人值守功能;监控中心完成对变压器数据信息和故障原因的显示、存储、打印以及对终端信息的维护管理功能。     

污水流量远程监控系统的设计

由于污水排放企业所处的地理位置非常分散,为了解决污水流量远程监测问题,提出一种无线式的污水流量远程监控系统的设计方案。介绍了系统的总体结构及其数据采集终端、无线网络传输和数据中心的设计。数据采集终端以PLC为核心,采集的流量信号和开关信号,经数据采集终端中的DTU单元,通过CDMA网络将数据传输到远端监控中心,并存储到数据库。监控中心通过Web服务器发布数据,并实现对污水排放点的实时监控。系统已应用于排水管理领域。     

车辆远程监控系统的设计与实现

文章提出了一种具有实时安全预警功能的车辆远程监控系统,包括车载数据采集端、手机客户端以及监控中心.汽车车载数据采集终端可实时采集到车辆的位置信息、速度和加速度信息并通过3G无线通信网络将这些数据发送到监控中心数据服务器.监控中心接收到所有车辆传来的数据,并将信息发送到用户车的手机客户端上,手机客户端通过本车的数据和周边车辆的数据计算出本车是否处于安全状态,如不安全手机客户端则会预警,提醒驾驶员采取措施避免事故的发生.     

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.