基于蓝牙和互联网技术的BLDC电机远程控制系统

为了满足远程控制的需求,解决现有控制方案的不足,介绍了一种基于蓝牙和互联网技术的无刷直流(BLDC)电机远程控制系统。使用控制器集成蓝牙模块,通过蓝牙通信将控制器与服务器连接。客户端与服务器通过TCP协议实现网络通信。服务器作为互联网设计的通信节点,实行客户端与控制器连接,完成无刷直流电机的远程控制系统。文章从硬件和软件两方面描述了该系统的实现。     

基于Android平台的高可靠远程控制系统

介绍了一种通过移动终端来远程控制电器开关的Android应用系统。基于Android平台编写客户端界面,用java实现了Socket网络编程,并设计了可靠的双向通信协议,使移动终端与CC2530通信模块进行通信,保证控制过程的安全可靠性。用户可通过对硬件进行IP配置,客户端登陆WIFI,连接硬件部分的IP和端口等操作,实现Android应用程序对继电器的远程控制。     

一种基于网络的新型远程监控系统的设计

随着现代通信技术和计算机设备的应用和发展,远程控制技术有了长足的进步,本文设计并实现了一个基于网络的远程控制系统.计算机网络远程控制系统的构成主要包括服务端、客户端和控制信息,这是设计和实现的重点.服务端管理注册信息,实现用户命令;客户端提供网络硬件软件等系统资源,响应系统消息,反馈服务端指令;控制信息基于传输层实现,使用TCP/IP协议,控制信息包括控制资源、控制命令等.     

基于WinSock的远程监控系统的设计与研究

提出通过因特网对x-γ能谱仪进行远程控制及对所采集的能谱进行分析的方案。按照能谱仪远程控制系统的需求,共设计远程监控端、通信传输、现场监控等三个子系统,在传输的问题上采取基于Visual Basic的WinSock技术来实现：不同特点的数据采用不同的传输层协议,在通信模式中采取C／S模式：整个远程控制系统分为：客户端、服务器端、监控端、设备控制端等4个模块。     

基于GPRS远程监控系统的通信实现

为了实现监控系统的远程控制,主要讨论了基于GPRS通信方式的远程监控系统中的几种主要实现方案,并对各方案进行对比选择,也对网络通信协议进行了介绍比较。利用RAM7和一体化的GPRSDTU作为客户端,利用VC＋＋6．0软件开发基于socket的通信模块,结合labview软件开发的数据处理模块作为监控中心,从而实现远程监控系统整个链路的搭建,同时也给出了基于TCP协议的客户端和服务器端的通信程序实现。     

基于GPRS和ZigBee的节能型LED路灯智能控制系统

针对现有城市路灯控制系统路灯使用寿命短、无法远程操控、不能自动识别故障路灯的问题,提出一种基于GPRS网络技术和ZigBee无线通信技术的节能型LED路灯智能控制系统,使用ZigBee无线网络与LED路灯控制终端通信,并通过GPRS通讯模块接人GPRS网络与远程控制中心相连,实现远程控制LED路灯,此外,通过LED路灯控制终端实时采集路灯电压和电流,实现LED路灯的远程监控;具体阐述了GPRS通讯模块、ZigBee无线网络模块、LED控制终端的硬件设计方案,软件设计流程,系统通信协议和远程控制实现方法;测试结果证明此系统数据传输可靠、响应及时、成本低、易于实现LED路灯的远程控制和远程监控,具有较大的实用性和推广价值.     

基于因特网的智能远程控制系统的设计

本文首先介绍了基于因特网的智能远程控制系统的体系结构和使用于系统中的网络数据库关键技术,对多用户同时操作问题、Web客户端/服务器端动态交互的实现、Winsock网络实时传输通信的设计等部分进行了详细的分析设计,确定了系统使用的控制网络与信息网络融合的方法,最后介绍了远程控制系统的网络安全问题.     

基于PSTN的远程控制系统通信模块设计与实现

基于PSTN的远程控制系统利用公共交换电信网进行控制信号的传输的通信,远程用户可以通过任何电话终端与系统进行语音应答通信,查询并发送控制指令实现电器设备的实时远程检测与控制。介绍了PSTN远程控制系统的构成,并详细阐述系统通信模块的设计与技术实现方法。     

家用电器远程控制系统的设计与实现

选用51单片机和GSM远程通信模块,设计实现了家用电器远程控制系统。客户可利用手机短信,借助移动通信网络实现对家用电器的开关等远程控制。该系统具有用户身份信息和用户指令自动识别等功能,操作简单,实用性强,具有广阔的应用前景。     

基于SMS的智能家居远程控制模块设计

主要利用串口通信技术和 AT指令集设计一个基于短信(SMS)的远程控制模块。用户可通过手机发送短信实现对接入主机的家居设备控制。文章阐述该控制模块的硬件设计、PDU模式下短息编码规则、软件设计等内容,搭建一个以三星 S3C2440处理器为核心的控制平台用以完成对数据的分析和处理。该设计基于 GSM通信系统,保证了控制模块具有很强的可靠性和稳定性。该模块经实验测试验证了其可行性,为工程应用提供了一种解决方案。     

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.