基于GIS可视化的游乐设施在线监测与评估系统

根据目前国内游乐设施安全的实际情况,充分研究了现阶段的游乐设施的检测方法,结合VB、MAPX,F-AHP(模糊层次分析法)和BP神经网络等技术,开发了一套基于GIS可视化的游乐设施在线监测与评估系统.系统具有良好的人机操作界面,可以在线采集游乐设施的动态数据和分析游乐设施的安全裕度.在某游乐场进行试验后,系统运行效果良好.     

浅谈特种设备检验检测的安全管理

特种设备与我们生活是密不可分的。例如电梯、锅炉、气瓶、起重机械、客运索道、大型游乐设施等等都属于特种设备,与人民的生命财产安全息息相关。特种设备数量多,分布广,涉及生产、生活诸多方面,是人们日常工作、生活中广泛接触且不可缺少的设备设施。有效减少特种设备发生故障的概率,减少事故的发生,增强设备安全运行效率,是特种设备检验检测人员的必备职业素质。特种设备检验检测应该不断学习现代化先进技术,逐步强化工作技能。本文将对特种设备检验检测的安全管理作出讨论,首先分析了特种设备安全管理的可能问题,并提出改进意见。     

游乐设施座椅乘客束缚装置约束有效性研究

游乐设施乘客束缚装置约束是否合理有效,直接关系设备运行及乘客的人身安全.为确保乘载安全,正确选择乘客安全束缚装置至关重要.基于安全带、安全压杠和安全带安全压杠配合3种约束方案,分别建立了游乐设施乘客束缚装置的三维数字模型,并在Hypemesh、LS-PrePost中对模型添加约束,施加载荷,将模型导入LS-DYNA中实...     

基于模糊层次法的配电网停电风险预警系统

为准确及时地对配电网停电风险做出预警，降低电网事故发生概率，设计一种基于模糊层次法的配电网停电风险预警系统。根据设施设备、运行维护与网络架构水平，建立预警指标体系；利用模糊层次法构建指标模糊判断矩阵，获取指标的模糊综合度，经过归一化处理后得到权重集合；确定系统整体架构与工作流程，使系统具备实时监测、辅助决策、安全校验、动态预警与结果可视化等功能，在通信服务中实现数据传输、时序控制等软件性能。仿真实验表明系统能够为配电网安全运行提供技术保障。     

一种基于Multi-Agent的实时监控系统的设计和实现

基于Multi-Agent技术提出了一种多Agent实时安全支持系统结构模型，包括：故障感知Agent、故障诊断Agent和咨询解释Agent。它们的协同工作用于某超高压变电站安全监控环境、为大型实时监控系统的开发提供了一个成功的实例。     

移动Agent系统Mogent的安全设施分析

安全问题是移动Agent技术应用发展中的一个重要主题。本文详细分析了南京大学计算机软件新技术国家重点实验室研制的基于Java的移动Agent系统Mogent(Mobile Agent)的安全设施，主要包括密写操作与密钥管理、安全传输通道、访问控制、授权和电子货币。     

化工企业安全生产故障预警仿真系统

介绍了化工企业生产的特点和事故的特征,阐述了预防化工企业生产事故的技术手段,化工企业安全生产故障预警仿真系统是解决化工企业安全生产的一种有效手段。     

基于云平台的台区故障监测系统设计

传统监测系统在台区故障监测应用中常出现误测现象,且误测率较高,为此提出基于云平台的台区故障监测系统设计。系统硬件部分包括故障信号采集卡、微处理器以及预警器设备,利用故障信号采集卡采集台区故障信号,通过微处理器对故障信号进行处理并且对系统监测命令进行响应,通过预警器对台区故障进行及时预警;系统软件部分设计故障信号编码协议对台区故障信号进行分类,同时对台区故障进行编码,利用云平台分析台区故障信号,计算出台区故障概率,将其分析结果作为系统输出,以此实现基于云平台的台区故障监测系统设计。经实验证明,设计系统对于台区故障的误测率小于当前系统,具有较好的可行性和可靠性。     

基于局部离群因子的城市轨道交通行车安全防护设备状态监控系统

为了实现对城市轨道交通行车安全防护设备的智能化监控,提出基于局部离群因子的城市轨道交通行车安全防护设备状态监控系统设计方法。将安全设备的状态监控系统分为火灾自动报警系统、屏蔽门/安全门、广播系统、乘客信息系统等,结合对城市轨道交通行车安全防护设备安全影响因素,进行车辆段及设备应用配置分析,通过设施配备标准体系优化设计,实现对消防设施和综合监控设施配置,采用软件系统和预警接收单元联合控制的方法,采用局部离群因子检测,实现对城市轨道交通行车安全的烈度速报及视觉控制,实现城市轨道交通行车安全防护设备状态特征分析,提高状态监测的可靠性。测试结果表明,采用该方法进行城市轨道交通行车安全防护设备状态监控的可靠性较高,提高城市轨道交通的安全保障度。     

基于局部离群因子的城市轨道交通行车安全防护设备状态监控系统

为了实现对城市轨道交通行车安全防护设备的智能化监控,提出基于局部离群因子的城市轨道交通行车安全防护设备状态监控系统设计方法。将安全设备的状态监控系统分为火灾自动报警系统、屏蔽门/安全门、广播系统、乘客信息系统等,结合对城市轨道交通行车安全防护设备安全影响因素,进行车辆段及设备应用配置分析,通过设施配备标准体系优化设计,实现对消防设施和综合监控设施配置,采用软件系统和预警接收单元联合控制的方法,采用局部离群因子检测,实现对城市轨道交通行车安全的烈度速报及视觉控制,实现城市轨道交通行车安全防护设备状态特征分析,提高状态监测的可靠性。测试结果表明,采用该方法进行城市轨道交通行车安全防护设备状态监控的可靠性较高,提高城市轨道交通的安全保障度。     

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.