厂矿企业铁路道口安全综合监督系统方案探讨

围绕铁路道口安全的3个维度详细设计技术方案,探讨如何解决道口安全隐患.通过加强系统、设备间、机车与道口的信息互动协调和综合联动,发挥整体效能,实现对道口的综合安全监督.     

IP网络下实时语音应用中的缓冲策略

分析了IP网络下实时语音应用在QoS上存在的问题,设计了一种有效的QoS控制机制,并提出了一系列旨在改善语音质量的策略和算法.     

The measure and decision of technical risk in the development of naval vessels

The risks in development of navy vessels were explored, The resources of technical risk in the design and development of vessels were mentioned, It was pointed that technical risk dominated the other risk components. Based on the writers＇ understanding and experience from risk analysis and risk ,nanagement to the development of a navy vessel, four measure indexes of technical risk were presented. The decision criteria and the rules corresponding to the indexes were estahlished by the statistic information,     

基于图像处理的火灾定位研究

采用离子感烟火灾探测器对被监控环境进行火灾监测．运用图像处理技术,通过比较发生火灾前后环境图像灰度值的变化,计算火灾在环境中的坐标位置,实现火灾的定位．同时计算火灾的面积、火灾图形方向等相关的图形特征参数．为实施火灾的自动消防技术提供了有效的技术基础．     

滑模施工水泥混凝土路面断板的修复

从施工期、通车1～2、使用期、设计使用寿命终了期等四个阶段,分析了滑模施工水泥混凝土路面断板的种类和产生的原因,并提出了断板的具体处理方法。     

计算机编制列车运行图系统调整系统设计及实现

利用计算机编制列车运行图是铁路适应市场的需要,列车运行图编制系统的调整子系统是该系统的重要组成部分,对列车运行图系统的功能设计进行了讨论,对该子系统框架的设计以及图形显著优化的技术实现进行了详细地描述。     

浅谈施工项目经理的必要条件

通过笔者多年的施工管理经验体会 ,就如何当好项目经理 ,从提高政治素质、领导意识和知识的多元化积累等方面进行了阐述     

The trade-off between trips and distance traveled in analyzing the emissions impacts of center-based telecommuting

Several travel indicators were compared between telecommuting (TC) days and non-telecommuting days for a sample of 72 center-based telecommuters in California. Distance traveled decreased significantly on TC days, with average reductions of 51 person-miles (58%) and 35 vehicle-miles (53%). When weighted by telecommuting frequency, average reductions of 11.9% in PMT and 11.5% in VMT were found over a five-day work week. Person-trips and vehicle-trips increased slightly (but not significantly) on TC days. This was due to statistically significant increases in commute trips by telecommuters (who more often went home for lunch on their TC days), partly counteracted by decreases in non-commute travel. The drive-alone mode share increased on TC days, both for all trips, and for commute trips in particular. Walking and biking shares also increased modestly on TC days, whereas shares of transit and ridesharing declined. Despite the increase in trip rates, TC-day reductions were found for all pollutants analyzed: 15% for total organic gas emissions, 21% for carbon monoxide, 35% for oxides of nitrogen, and 51% for particulate matter. The reduction in VMT more than compensated for the marginal increase in number of trips (and consequently, cold starts) on telecommuting days.     

基于模糊层次分析法的天津港复式航道通航安全综合评价

通过构建天津港复式航道通航安全综合评价指标体系,建立复式航道通航安全评价模型,利用模糊层次分析法对天津港复式航道进行通航安全综合评价,为天津港港口营运与管理、海事监管与通航秩序维护提供理论支撑。     

轮机模拟器及其关键技术

轮机模拟器研究涉及数学建模、系统仿真与优化、网络通信与控制、虚拟现实等多学科内容,并且与工业控制、总线技术、网络技术等密切相关.结合DMS-2010型轮机模拟器研究工作,指出采用先进的仿真技术及智能控制方法提升轮机模拟器品质及实用性能的研究方向,使其由操作级应用扩展至管理级及工程论证级应用.