基于SMS霓虹灯的监控系统

鉴于GSM/SMS网络的技术已比较成熟,又有开发方便、费用低廉、可靠性高、覆盖范围较广等诸多优点,本文研究了通过监测霓虹灯工作电流参数,利用GSM/SMS短信息服务,实现对霓虹灯远程报警和控制操作。该系统以AT89S52单片机为核心,使用MAX274、MAX125和TC35来构成整个系统。文章详细阐述了系统的结构、工作原理、软件设计和研制体会。该系统经实践验证,实时性强、可靠性高。     

The value relevance of top executive departures: Evidence from the Netherlands

On theoretical grounds, monitoring of top executives by the (supervisory) board is expected to be value relevant. The empirical evidence is ambiguous and we analyze three non-competing explanations for this ambiguity: (i) The positive effect on firm value of board monitoring is hidden in stock price effects due to the simultaneous occurrence of the positive real effect of monitoring and the opposing information effect. (ii) The combination of board monitoring and monitoring by other parties prevents assessing the value relevance of board monitoring in isolation. (iii) The confounding effect of a simultaneous successor appointment typically generates an upward biased estimate. Based on an analysis of price effects and trading volumes at announcement, we conclude that monitoring by the supervisory board is valued by investors: Forced departures of executive directors, also without a successor appointment, are value relevant in the Netherlands where external control mechanisms and shareholder control were virtually absent in the period studied (1991–2000).     

校园大气环境污染现状

在区域污染源调查基础上,对校园大气环境质量进行了现状监测与评价,结果表明,校园大气环境已受到较重污染,SO_2,NO_x,TSP一次浓度在各监测点处不超标或最大超标0.25倍;SO_2,TSP日均浓度在各监测点处均有超标现象,最大分别超标0.71～1.43倍、0.92～1.37倍;并对污染原因进行了分析。     

Monitoring Job Search as an Instrument For Targeting Transfers

Redistribution programs are constrained because those not working may be either unable to work, voluntarily unemployed or involuntarily unemployed. The inability to distinguish among these three cases inhibits the targeting of transfers to those most in need. Enabling the government to monitor whether unemployed individuals are searching for work and accepting any offered jobs increases its ability to redistribute income. We show that these monitoring activities are complementary, and consider how a minimum wage might be a useful adjunct to monitoring contingent tax-transfer policies.     

基于视频图像的车辆检测算法研究

固定镜头下视频序列中的运动汽车目标的检测、分割、跟踪及计数等底层视觉问题进行了研究,提出了计算交通流量的算法。仿真实现表明:此算法可以有效的去噪、检测目标并计数。     

闭路电视监控系统在永福火力发电厂的应用

文章介绍了工业闭路电视监控系统在永福火力发电厂的应用,重点介绍了该系统的组成及功能特点等,并提出了一些优化设计的建议.     

高可靠性数据传输系统LVDS交叉备份方法

以一种高可靠性数据传输系统为例，详细阐述了采用LVDS输出电平标准的交叉备份方案的设计，比较了LVDS端交叉和TTL端交叉各自的优缺点。对TTL端交叉备份方式进行了分析，重点讨论了TTL几端交叉备份方式解决主备故障隔离的几种方法，并分析了各种方法在实际应用中存在的不足。最后给出了该高可靠性数据系统中所采用的跨接电阻方案。该方案具有设计简单、可靠性高的优点。     

我国老年人异地医保的困境与对策

近些年来城市人口流动频繁,老年人因各种原因的迁移也在逐渐增多,异地医疗费用报销和医保关系转移等问题困扰着越来越多的老年人.目前我国老年人异地就医面临着报销手续复杂、比例较低等困境,地区间利益冲突、各地政策不一致、监管难度大等是造成困难的原因.针对上述问题提出完善异地就医政策和设置定点医院、提高统筹层次,实现省际间医保的转移和最终实现全国统筹三个阶段性的对策.     

基于eCos操作系统的仪器设备远程监控系统设计

现代仪器设备工作于恶劣环境中,传统的监控方式采用RS232、RS485等方式,其传输距离有限,不利于集中远程监控,文章开发一种基于eCos操作系统的新型远程监控系统,通过RS232接口和设备互联,实现远程信息获取功能。该系统成本低廉,采用WEB方式控制,使用方便。     

物流监控在海关现代管理中的新发展

建立强有力的物流监控系统,确保进出境物流处于海关有效监控之下是通关作业改革的重要目标之一。我国海关的物流监控体系建设在取得一定进展的同时,也仍然存在一些亟待解决的突出问题:缺乏系统化的物流监控体系、物流监控与国际物流活动的矛盾突出等。根据世界发达国家海关的先进经验,结合国际物流的发展,并充分现代物流的先进理念,提出有针对性的建议,促进物流监控适应我国海关现代管理的新发展。