柴油轿车将成为未来轿车的主流车型

本文主要分析了柴油轿车的市场情况,通过比较柴油轿车与汽油轿车,分析我国柴油轿车发展所面临的市场环境以及轿车柴油机的未来发展,说明柴油发动机将成为轿车的主要动力。     

散装化学品船舶事故应急处置方案

文章基于散装化学品船舶事故的严重性,结合化学品的特性,指出要对散装化学品进行正确的评价,并针对散装化学品火灾爆炸事故与泄漏事故的特点,提出了相应的应急处置方案。     

高速铁路应急预案与规章管理优化探讨

随着高速铁路的快速发展,科学合理的应急预案与规章对保障旅客运输服务质量和安全的作用愈加显著。系统分析发达国家铁路应急管理现状与经验,阐述我国国家、铁道行业和国铁集团层面法律法规、预案与规章现状与存在问题,提出强化政府层面高速铁路应急预案、完善高速铁路应急处置机制、建立健全高速铁路应急处置规章体系、推进应急规章体系的制修订和定期开展应急培训与演练等政策建议,为完善我国高铁应急管理体系、提高应急处置能力提供支撑。     

轨道交通站点购票客流预测及优化技术研究

将地铁中高峰时段购票客流看成排队论系统,结合排队论知识进行数据优化,利用MATLAB编制BP神经网络模型的程序,建立仿真并预测站点购票客流及自动售票机的需求量,从而达到应急售票服务的优化,提升乘客服务满意度.并以某市大客流站点的客流数据进行论证.     

我国城市轨道交通发展现状探讨

对我国城市轨道交通发展现状进行了深入的探讨.     

Wi-Fi和无线PBX技术在铁路应急通信中的应用

铁路应急通信系统要求接入设备在应急现场提供无线话音通信功能,通常该功能有Wi-Fi和无线PBX两种实现方式,介绍2种方式的实现原理和各自的优势和不足。     

浅析宽带网络接入技术现状及应用

分析了宽带网络接入技术的现状及其存在的问题,并阐述其应用前景。     

地铁火灾应急调度系统综合评价方法研究

地铁是城市中解决日益严重的交通问题的大容量快速交通工具,也是城市的现代化标志之一.然而,地铁自出现之日起,就存在着各种安全隐患,其中最主要的隐患就是火灾.通过对地铁火灾应急调度系统的分析.利用AHP方法将应急调度系统分为4个层次15个指标,提出系统层次分析结构,并利用该方法对层次分析结构进行定量计算.根据计算出的权重对系统进行综合评价,得出地铁火灾应急调度的最优化管理办法.实践表明,基于AHP的地铁火灾应急调度方案能够获得更科学的管理决策.     

Effects of noise exposure of other people on aircraft noise tolerability using a reference point approach

Reactions to aircraft noise resulting from an airport development vary considerably among individuals. This paper examines whether the noise level tolerated by individuals is affected when they compare their own situation to the situations of other people who are more severely affected by the noise. We modeled the individual noise tolerability by adopting the reference point concept and the value function of prospect theory. A questionnaire assessed different levels of noise-affected zones at a hypothetical airport. Individual noise tolerable level was measured by a prerecorded aircraft noise presented via headphones. Decision-making associated with the reported satisfaction level regarding the changes in operational flight frequency settings at the airport. An interview survey was conducted with residents near Manila airport in the Philippines. We applied genetic algorithm to jointly estimate the parameters for noise tolerability model and the value function. Results showed that individuals tolerated more overhead flights when they considered the situations of other people worse affected by the noise than they were. The tendency of noise tolerability increased with the severity of noise exposure situations of other people, but lower reactions to noise escalation. We also observed diminishing sensitivity to changes in noise relative to the noise tolerable level. The aircraft noise tolerability and the consideration of noise exposure situations of other people appeared to be a vital aspect to be considered in airport noise management and policy.     

潜艇损管应急操纵的运动仿真

利用航行训练模拟研究了破损进水对潜艇水下运动状态的影响，建立了与破损进水和应急处理相应的数学模型，模拟了潜艇发生破损时采用应急措施后艇体的运动状态。仿真结果对于实艇抗沉操纵有一定指导意义。