基于IPv6/CDMA的车载信息系统设计

介绍了一种基于IPv6/CDMA的集成汽车导航、汽车监控、防盗报警功能的车载信息系统,包括远程监控中心、车载终端和CAN网络.该系统以32位ARM微处理器、GPS模块和CDMA模块为硬件核心,嵌入式Linux系统为软件核心.主要讨论了系统中车载终端的设计与实现.     

一种新的车辆远程诊断系统的设计和实现

在对国内外最新的车载远程诊断系统平台的软件、硬件结构进行分析的基础上,设计并制作了基于GPS/GPRS的集车辆数据采集和预处理等技术的车载远程诊断系统。对车载诊断系统中终端硬件的各个部分以及软件部分的设计进行了论述,给出了电路框图和程序流程。车辆远程诊断系统的设计和工艺处理经测试符合车载标准。在上海泛亚汽车技术有限公司二年多的运行表明,该监控系统及车载终端运行稳定,功能满足需求。     

车载自动售货机系统的设计与研究

随着售货机管理经营技术手段的不断完善,开发出基于车载移动无线自动售货机是当前人们现实需求以及技术发展的需要.该系统结合GPRS、GPS、GIS等技术,设计并开发了安全有效的传输协议.实现了车载终端与远程监控中心的无线通信.在监控端实时显示当前各个售货机终端的交易信息、位置以及远程控制车载终端.经过实验测试,该系统能够准确、快速的完成指定功能.     

一种车载终端软件架构及实现

车载终端是车联网系统的重要组成部分, 为了提高终端软件的可靠性和开发效率, 参考NGTP(Next Generation Telematics Pattern), 设计了一个开放式的车载终端软件架构. 在该架构中, 系统由移动终端、后台支撑系统、车载终端及后台业务系统组成, 各部分之间通过标准数据协议进行数据交换, 实现车辆远程数据采集和诊断、紧急情况处理、远程查询及控制等车联网典型应用. 为了提高终端软件系统的可靠性, 将终端软件分解成功能系统与守护系统两部分, 通过守护系统实时监控功能系统, 当功能系统出现故障时, 重新启动功能系统来保证终端软件系统的有效性. 根据该架构开发的车载终端验证了方案的有效性.     

煤层气车载钻机远程监控系统设计

针对现有钻机远程监控系统存在通用性不强、安装不便、通信抗干扰能力弱等问题,设计了一种煤层气车载钻机远程监控系统。该系统由车载终端、后台服务器和监控管理平台组成,车载终端通过CAN总线实时采集钻机运行状态数据,并通过TCP/IP协议将数据上传至后台服务器,监控管理平台采用B/S架构,通过HTTP协议访问后台服务器数据并显示钻机运行状态。应用结果验证了该系统的有效性。     

基于单片机的汽车远程监测车载终端硬件设计

以基于ARM Cortex-M3内核的STM32F103C8T6作为主控芯片,构建了一个汽车远程监测系统车载采集终端,终端硬件由OBD接口电路、MCU系统电路、通信接口电路和电源电路等部分组成,系统将嵌入式技术、GPRS技术及Internet技术三者结合,对汽车进行故障预警、故障诊断与监控管理。实验测试结果表明其效果良好。     

基于GPRS的远程诊断车载终端的设计与实现

现阶段开发一种基于GPRS网络的远程诊断车载终端具有重要的现实实际价值和意义.在车载终端建设完成之后,诊断服务的经济性,及时性和专业性都将得到大幅度的提升.本文设计的终端系统是由微处理器,总线控制器,GPRS通信模块和GPS模块四个模块组成的.在本文的设计之中,系统通过总线控制器实现与车载的控制单元的连接,本系统之中的数据在经过微处理器的整合打包之后通过互联网发送到远程的服务器上.本文的重点内容是介绍了远程诊断车载终端的实现原理以及这一系统之中的软件与硬件的具体设计.本文在设计完成之后,利用发动机台架等进行了实际的检测实验,实验的结果表明,本文设计的基于GPRS的远程诊断车载终端运行十分的稳定可靠,可以对汽车的电子控制单元进行实时的监控.     

基于BBB平台的车载定位监控系统设计

车载定位监控系统共有两个主要模块:车载端和监控终端.车载端由BBB控制板和SIM908模块构成,工作过程为BBB主控板开启SIM908 GPS功能,同远程监控终端建立数据链接,获取GPS地理位置数据,然后将所获得的数据解析打包,并通过GPRS网络将数据发送到远程监控终端.远程监控终端由X86 PC机构成,首先监控端建立基于外网IP地址的服务器,然后监听连接请求,获得请求后建立通信连接、接收数据,并对数据进行解析,最后将车辆定位信息在Google和Baidu在线地图上进行标记显示.     

一种用于电力监控系统测试的远程系统设计实现

分析了电力监控系统远程测试测评的迫切需求,基于TD-LTE无线虚拟专网设计实现了远程测试系统,将电力监控系统的现场测试测评工作延伸至远程端开展,提高了系统测试的效率。远程系统采用冗余技术对测试主站进行可靠性设计和部署,在主机、数据库、网络等方面进行安全加固,采用国家商用密码算法和加密认证技术实现通信的安全,采用TD-LTE无线虚拟专网技术和嵌入式技术设计了便携式现场测试终端。最后提出电力监控系统远程测试的两种管理模式。     

保鲜车状态远程监控系统设计

保鲜车状态远程监控系统由车载监测终端和远程监控终端两部分组成。车载监测终端实时测量车厢内的温湿度和保鲜车的位置,通过GPRS模块将测量信息发送到MQTT服务器;远程监控终端采用嵌入式Linux系统,通过网卡模块从MQTT服务器获取测量信息,并通过网卡使用HTTP协议调用腾讯地图接口,解码地图数据,将车辆在地图上的实时位置和温湿度数据呈现在远程监控端,便于监控,并可通过触摸屏更改显示地图的范围大小以及温湿度阈值等,进行超限报警及相应控制。该系统为远程数据监控提供了一种便携、可靠、显示直观、易于实现的解决方案。     

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.