基于CDMA2000 1X的模拟传真设计和实现

针对目前基于CDMA2000 1X的数字传真存在的问题,结合现有的CDMA2000 1X数据业务的实现和模拟传真业务的协议,提出了一个完整的基于CDMA20000 1X的模拟传真终端系统设计方案,在此基础上描述了系统的实现原理和传真流程。此模拟传真终端在CDMA2000 1X上进行了模拟传真的实验,结果表明,该终端在传真的质量和成功率方面有较大的改进,更好地满足了传真可靠性的需求。     

基于CDMA无线通讯技术的G3传真实现

CDMA技术已经在中国大规模商用,但是基于CDMA无线技术的传真应用却是一个空白,在行业中是个技术难题。该文提出了一套完整的系统设计方案和关键技术的解决办法,并在此基础上描述了系统的实现原理和传真流程。这里研制的CDMA终端在CDMA无线网络上进行了G3传真的实验,并取得了满意的效果。     

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。     

一种基于G3 FAX的CDMA网络无线传真终端协议的实现

在阐述了无线传真协议结构的基础上,给出了一种基于G3FAX的CDMA网络无线传真终端协议的实现过程。     

基于无线通信网络的G3传真终端的实现

无线通信技术已经广泛应用于社会各个方面,无线传真业务更是扩展了无线通信技术的应用范围。本文介绍了传真业务在CDMA,GSM等无线网络中的实现,设计了基于GSM的无线传真通信规程以及无线传真终端,并通过实验完成了无线传真的接收与发送,收到了满意的效果。     

基于CDMA 1X的SCADA系统的研究

本文分析了现有SCADA系统通信技术的不足,提出将CDMA 1X无线数据传输技术应用于SCADA系统的设想.文章对CDMA 1X技术进行了简单的介绍,对基于CDMA 1X的SCADA系统进行了系统研究,完成了VPDN模式的系统组网,对SCADA系统的终端和监控主机通信部分进行了详细设计.实际运行结果表明,该系统具有良好的可靠性、灵活性和可扩性.     

基于CDMA1X网络的无线视频监控的设计与应用

文章针对CDMA 1X无线网络视频监控系统提出了一种基于CDMA1X网络系统的设计，介绍了CDMA 1X无线网络视频监控系统，论述了CDMA 1X无线网络视频监控系统具有的技术优势、安全机制和实际应用，最后进行了总结。     

基于CDMA 1X网络的自助服务系统

本文介绍了基于CDMA 1X网络的自助服务系统的背景、总体方案设计与功能实现,重点说明了自助服务终端的硬件与软件组成框图。该系统将时尚的自助服务方式与先进的CDMA 1X网络有机地集成一体,可为多种行业提供自助收费、售卡、通讯、咨询、广告等传统业务与增值业务服务。     

基于CDMA1X的远程心电监护系统的研究与设计

近年来,远程心电监护技术不断发展,但国内现有的远程心电监护系统仍然存在诸如实时性差,患者的活动范围受限,诊断的准确性和科学性差等问题.基于CDMA1X（code division multiple access,CDMA）的远程心电监护系统充分利用CDMA1X网络的技术和资源优势,采用便携式心电监护终端,可以随时随地监护,提高了监护的实时性、准确性和科学性.介绍了该系统的基本框架、软硬件的设计与实现,对该系统的技术特点进行了分析论述,并对该系统的应用前景作了预测.     

新品出击

诺基亚首款CDMA2000 1X手机诺基亚发布了第一部使用CDMA2000 1X技术的手机——6370，而LEAP无线网络公司则成为专门提供这类技术网络的服务商。6370基于诺基亚自己的CDMA2000 1X的芯片集，提供给CDMA服务商一个更好的机会去实现他们新的CDMA2000 1X的声音网络。6370是为那些喜欢经典的式样，又想享有最先进技术的人们所设计的。它拥有非常全的功能，包括两种方式的文本消息、下载铃声等，它的电话簿非常大，可存储约500个记录，并有日历功能，让用户可以体验到手掌中拥有超大容量的非凡感受。除了它的一些新功能之外，以往的诺…     

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.