CDMA 1X/GPRS无线数据传输在移动监测系统中的应用

为了提高移动监测系统中实时数据的可靠传输,以CDMA 1X为主通信网络、GPRS为备份通信网络的方式构建了双网络数据传输系统。系统在Delphi6平台下,利用CDMA和GPRS无线终端传输实时数据至接入Internet的数据中心。该双网络数据传输系统为秦山核电基地外围环境的移动监测实现了可靠稳定的实时数据传输。     

基于CDMA 1X的无线数传系统设计

CDMA 1X是中国联通推出的一种新型移动数据通信业务。系统以数传终端为核心，将现场的数据进行编码处理，并转换成在公网中传送的数据格式，通过中国联通的CDMA 1X无线数据网络进行传输，最终传送到监控中心IP地址。本文详细介绍无线数传系统的硬件组成和软件设计方法；阐述基于CDMA 1X业务实现数据无线传输的设计思路以及基于MSP430微处理器和CDMA模块CCl的数传终端设计方案；给出数传终端的硬件设计电路以及相关软件流程图等。该系统可以实现远程的数据传输，在许多无人值守并需要数据传输的场所可以得到广泛的应用。     

基于CDMA网络的配电监控系统的应用

介绍一种无线远程低压配电监控系统,该系统由数字式仪表、无线数传主机、CDMA网络、数据库服务器和应用软件组成。系统以互联网为数据传输主干网络,组网简便,适应性强。     

基于CDMA1X的油田远程监控系统的设计与实现

针对油田位置偏远、监控点多且分散的实际情况,提出一种基于CDMA1X网络的远程监控系统设计方案.系统由采集终端、传输网络、监控中心组成,支持TCP/IP和短消息两种数据传输方式.采集终端由无线模块Q2358C、单片机MSP430组成,监控中心以VC 和Mapx为开发平台,实现了基于电子地图的查询、定位、报警等功能,重点解决了系统的低功耗和网络断线问题.该系统性能可靠、实用性强,具有较高的推广价值.     

交通监控系统中信息发布平台的设计与实现

信息发布平台是整个智能交通监控管理系统的信息出口,是一套基于GPRS/CDMA/GSM网络的广域远程无线信息发布系统,平台将信息显示终端如:VMS、移动终端、车载终端等,与先进的无线分组网络GPRS或者GSM短消息或者CDMA技术或基于3G标准的网络相结合,提供实时、无线、远程、多屏幕的信息发布。     

交通监控系统中信息发布平台的设计与实现

信息发布平台是整个智能交通监控管理系统的信息出口，是一套基于GPRS／CDMA／GSM网络的广域远程无线信息发布系统，平台将信息显示终端如：VMS、移动终端、车载终端等，与先进的无线分组网络GPRS或者GSM短消息或者CDMA技术或基于3G标准的网络相结合，提供实时、无线、远程、多屏幕的信息发布。     

基于CDMA1X的自动气象站监测网联网解决方案

基于CDMA1X的无线数据传输业务广泛应用在移动办公、工业控制、远程遥测等多方面。文章简述了CDMA1X网络及其特点，并介绍了CDMA1X在自动气象站数据传输中的应用。     

车联网中基于GPSONE的露天矿车辆监控定位系统

在当前车联网时代下,针对目前我国露天矿企业运用移动定位技术对车辆进行实时监控的现状,以及传统车辆监控系统中数据传输速度、定位精度等问题,应用一种基于CDMA技术与GPS技术相结合的GPSONE无线通信平台。该平台在搭载CDMA通信模块的车载终端与监控中心服务器之间建立一条费用低,定位精确,实时性高,定位数据传输速度快的无线数据传输通道。在实验中,实现了实时高效的GPS定位数据的传输,及监控中心与车载终端的SMS通信和CDMA数据通信,达到了车联网技术在露天矿车辆监控定位系统中良好的应用。     

GPRS与CDMA对比

目前,基于GPRS/CDMA无线数据传输业务广泛在移动办公、工业控制、远程遥测等多方面应用,网络运营商中国移动GPRS和联通CDMA各有其特点。本文从网络的覆盖、带宽、频谱等方面对GPRS和CDMA进行了对比。     

内嵌TCP/IP协议的CDMA无线终端

介绍基于CDMA无线终端的TCP／IP协议实现。从CDMA无线数据通信的应用背景和应用特点出发,介绍CDMA无线终端TCP／IP协议的特殊结构,阐述应用层网络程序的开发原理,并给出实际应用系统原理及实现方法。     

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。