北京城铁13#线自动化综合监控系统的总体设计

文章重点介绍了作者在北京城铁13号线项目的自动化综合监控系统设计中,应用成熟的网络技术、自动控制技术、计算机技术、I/O技术来实现网络互联、信息共享、双冗余、可靠性高、稳定性好的分层分布式自动化综合监控系统的设计思想,并主要通过对实际工程中系统的总体结构、系统总体功能、每一个监控层在网络结构、设备布局与配置、与第三方接口通讯等方面的设计的详细介绍来阐述这一设计思想,最后还从本套自动化综合监控系统的可靠性和扩展性等方面对整套系统作了详细地系统性能分析。     

网络控制中心的远程智能监控系统

应用GSM网络,以单片机和计算机为控制中心,以各种传感器为数据检测设备,组成了远程监控系统.设计的机房监控系统,综合了单片机硬件设计、串口数据传输、网络监控、GSM网络应用、LabwindowsCVI软件编程和单片机编程等多方面技术,实现了低成本智能化无人监控功能.系统不仅可以实现24小时无人监控,并具有实时消息报告与...     

浅议校园网络视频监控与综合布线技术应用

该文浅析了当前主流视频监控系统的优缺点,对构建校园视频监控系统应考虑的问题进行了论述,并探讨了综合布线技术与视频监控系统设计施工的关系,给出了构建校园网络视频监控系统的建议。     

基于异构网络的风光互补电站监控系统设计

针对风光互补电站分布广、距离远、运行时间长、实时监控信息集成度不高的现状,综合运用无线传感网络、现场总线网络、GPRS网络、以太网等工业网络技术和嵌入式系统技术,设计了一种电站监控系统,实现了不同网络之间的数据互联通信。在介绍监控系统总体框架的基础上,重点分析了与异构网络互联相关的节点硬件和软件设计方法。实际测试表明,监控系统自动化程度高,数据传输稳定可靠,能够满足风光互补电站远程自动监控的应用要求。     

基于Zig Bee与GPRS的水产养殖环境无线监控系统的设计

针对目前国内水产养殖环境监控系统的研究现状,综合传感器技术、Zig Bee无线传感器网络技术和GPRS通信技术,设计并实现了一个无线监控系统.提出了一种改进的无线传感器网络路由协议,可降低路由消耗,提高可靠性.实验结果表明:系统可远程监控养殖环境现场,改进后的路由协议也更适用于水产养殖环境监控系统.     

周口市气象局网络实时监控系统的设计与实现

随着网络技术的迅猛发展,对网络运行状态的实时监控显得十分重要。通过综合分析我局整个网络拓扑结构,开发了基于delphi语言环境的实时网络监控系统,介绍了该系统的实现必要性、功能、设计原理和实现流程。投入业务应用的实践表明,该系统实用性强,对网络系统实时监控效果很好,大大提高了网络的有效性和可靠性。     

浅谈博州气象局网络实时监控系统的设计

随着网络技术的迅猛发展,对网络运行状态的实时监控显得十分重要。通过综合分析我局整个网络拓扑结构,开发了基于delphi语言环境的实时网络监控系统,介绍了该系统的实现必要性、功能、设计原理和实现流程。投入业务应用的实践表明,该系统实用性强,对网络系统实时监控效果很好,大大提高了网络的有效性和可靠性。     

数字视频监控系统在高校的建设

数字视频监控系统是一种融合了网络、视频处理和存储技术的综合应用技术。本文介绍了应用于高校安全防范管理的数字视频监控系统的设计原理、体系结构和应用功能。     

数字视频监控系统在高校的建设

数字视频监控系统是一种融合了网络、视频处理和存储技术的综合应用技术。本文介绍了应用于高校安全防范管理的数字视频监控系统的设计原理、体系结构和应用功能。     

基于IP的数字化网络视频监控系统设计与实现

本文为了设计一个通用化网络视频监控平台,提供一套具有实时性、实用性、易操作性、高可靠性、可维护性的视频监控管理系统。从监控系统的功能原理出发,结合当前监控系统技术的最新发展,综合运用媒体视频技术、计算机网络技术。该设计方案将传统的视音频及控制信号数字化,以IP包的形式在信道上传输,并实现了本地和远程的集中监控、集中管理。     

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。     

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.     

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.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.