Sightseeing Buses: Cruising,Timing and the Montage of Attractions

Abstract

This article focuses on spatial performances, modes of vision and touring practices enabled by sightseeing bus‐tours. Thereby, three aspects of the process by which these buses transform urban space into destination space are discussed. First, bus‐tours delineate, as they move, a unique geography of routes and stops, which is based on structured improvisation. Second, guiding practices of tour guides are crucial for assembling together a destination and their success depends on timing. Third, tourist experiences enabled by sightseeing bus‐tours involve a ‘cruise‐ship‐like’ style of movement and a mode of vision reminiscent of the ‘montage of coming attractions’ characteristic of film‐trailers. The article concludes by stressing the multiple spatial displacements involved in bus‐tour production of destination space.     

用VB实现PC机与GPIB通讯卡的通讯

主要研究波形测试及分析数据传递问题，测量模块采用GPIB总线标准，模块与计算机间的通讯用VB编程实现。     

智能型单总线温度控制器设计

介绍了单总线数字式温度传感器（ＤＳ１８２０）的技术特性以及基于ＡＴ８９Ｃ２０５１单片机温度控制应用系统的硬件电路设计和软件程序设计。     

基于指纹识别技术的网络式门禁系统设计

门禁系统的智能化是实现智能小区的重要一环。文中提出了基于指纹识别技术和CAN总线技术的小区门禁管理系统的设计方案和具体功能模块的实现方法，并介绍了系统中的指纹门禁单元和门禁主控制器的管理程序流程图。     

山地城市公交线网优化措施探析

大力发展公交是解决山地城市交通问题的重要手段之一，合理的公交线网可以提高公交服务水平，增强解决交通问题的能力。以重庆市为例，分析公交线网存在的问题并提出了相应的优化措施，以促进山地城市公交的可持续发展。     

石家庄公交专线发展中存在的问题与对策分析

石家庄公交专用道选择了交通压力最大的中山路段作为试点,使用五年后,全天行车速度提高了24.1%,运营车辆减少了近20%,日客运量增加了15.7%。然而在使用中也凸显出单一专用道难以整体缓解交通压力、乘候车环境不佳等问题。对此,本文提出了建立实时信息传递与监控系统,构建多层次优化的公交系统,改善乘候车环境等对策与建议。     

Absence behaviour, turnover and disability: A study among city bus drivers in the Netherlands

Absenteeism, turnover and disability, and relationships between them have been studied among city bus drivers in the Netherlands. The theoretical framework for the study was a cumulative process model of work and health. Absenteeism among these drivers was two to three times as high as the national average, while the risk of disablement was more than twice as high as the risk for male Dutch civil servants in general. Bus drivers who had to leave their job for medical reasons did so at a younger age than other groups of civil servants. The main conditions leading to disablement related to the back, tendons and joints (35%), mental disorders (35%) and cardiovascular diseases (12%). It was shown that long-term absenteeism is a strong precursor of future disability. The research suggests a work-related process of progressive deterioration of health and well-being over a reasonably long period of time. Driving city buses seems to be an occupation with high risks for health and well-being.     

基于PXI总线的虚拟数字示波器软件设计

提出了一种基于PXI总线的虚拟数字存储示波器实现方法。介绍了示波器数据采集板原理和底层驱动程序开发过程。结合设计的虚拟示波器面板,阐述在各种用户控制命令和状态下,数据的采集、处理以及波形和测量结果的显示等示波器功能的实现。     

城市公交专用道设置方式解析

建设公交专用道可以保证公交车辆优先通行，从而有效提高道路的人流量。城市公交专用道是城市道路系统的一部分，其通行能力受道路横断面、交叉口入口道以及停靠站设置形式的影响，考虑这几方面的因素，讨论了城市公交专用道设置方法的有关问题，分析了不同公交专用道的设置形式与交通运行状况的关系，并将不同公交停靠站形式进行了对比分析。     

Compressed Natural Gas Bus Safety: A Quantitative Risk Assessment

This study assesses the fire safety risks associated with compressed natural gas (CNG) vehicle systems, comprising primarily a typical school bus and supporting fuel infrastructure. The study determines the sensitivity of the results to variations in component failure rates and consequences of fire events. The components and subsystems that contribute most to fire safety risk are determined. Finally, the results are compared to fire risks of the present generation of diesel-fueled school buses. Direct computation of the safety risks associated with diesel-powered vehicles is possible because these are mature technologies for which historical performance data are available. Because of limited experience, fatal accident data for CNG bus fleets are minimal. Therefore, this study uses the probabilistic risk assessment (PRA) approach to model and predict fire safety risk of CNG buses. Generic failure data, engineering judgments, and assumptions are used in this study. This study predicts the mean fire fatality risk for typical CNG buses as approximately 0.23 fatalities per 100-million miles for all people involved, including bus passengers. The study estimates mean values of 0.16 fatalities per 100-million miles for bus passengers only. Based on historical data, diesel school bus mean fire fatality risk is 0.091 and 0.0007 per 100-million miles for all people and bus passengers, respectively. One can therefore conclude that CNG buses are more prone to fire fatality risk by 2.5 times that of diesel buses, with the bus passengers being more at risk by over two orders of magnitude. The study estimates a mean fire risk frequency of 2.2 x 10(-5) fatalities/bus per year. The 5% and 95% uncertainty bounds are 9.1 x 10(-6) and 4.0 x 10(-5), respectively. The risk result was found to be affected most by failure rates of pressure relief valves, CNG cylinders, and fuel piping.