Customers’ selections between premium electric taxis and liquefied petroleum gas taxis

Reducing roadside emissions is a common challenge in metropolitan cities. In Hong Kong, conventional liquefied petroleum gas taxis are one of the main contributors to roadside emissions as they operate on the streets 24 h a day with a long daily driving mileage. Moreover, these taxis suffer from a severely poor service reputation. To enhance the environmental friendliness and service quality of the taxi industry, this study explores the market potential of operating premium electric taxis in the dispatching mode. A stated preference survey was conducted to 1410 taxi customers about their taxi-riding choices between premium electric taxis and conventional liquefied petroleum gas taxis. In total, 5640 observations were obtained and used to develop a series of binary logistic regression models with different model formulations for the determination of the significant factors influencing customers’ selections. The findings indicate that walk time to and wait time for taxis were the most critical concerns to the customers, and they were more willing to take premium taxis if their journey distance was longer and their desired improvement on taxi service quality was greater. The socio-demographic status of taxi customers also influences their choices. The associated policy implications are discussed for promoting taxis with better service quality and fewer roadside emissions. The findings provide some policy insights to other international cities that have a similar taxi market to Hong Kong.     

A Football Field Lost Every 45 Minutes: Evaluating Local Capacity to Implement Louisiana's Coastal Master Plan

As Louisiana continues to experience substantial coastal wetland loss—at the rate of a football field every 45 min—and multiple disasters, state and federal officials struggle with implementing restoration plans in this highly productive ecosystem. The 2007 Louisiana Comprehensive Master Plan for a Sustainable Coast is the first large-scale restoration plan in the United States to incorporate hazard mitigation. However, there is no mandate for local governments to adhere to this plan. Building upon the planning quality and evaluation literature, this study analyzes comprehensive land use plans in Louisiana's coastal zone to systematically assess the quality of the plans within the context of a non-mandated, $50 billion large-scale state restoration plan. Results indicate a great disparity in plan quality; a majority of the local governments lack the capacity to implement the nonstructural programmatic elements of the state's plan. The study concludes with a discussion and recommendations for practice and future research.     

石料质量综合评估法在海外防波堤工程中的应用

针对海外防波堤工程中经常遇到的石料质量不能满足技术规格要求的问题,对国外规范和文献中关于石料质量评估方法的研究成果进行分析。通过将石料质量综合评估法在海外某实际工程中进行应用,并结合设计方案采取施工措施,解决了该工程的石料来源问题。     

磁耦合谐振式WPT系统传输特性影响因素研究

文章对磁耦合谐振式WPT系统传输特性的影响因素开展了研究与分析,分析了基于SS结构的磁耦合谐振式WPT系统的传输效率模型,基于此模型研究了品质因数对系统传输特性的影响;分别研究了趋肤效应与线圈结构对传输特性的影响,并根据趋肤深度公式分析了多芯情况下的线圈品质因数计算公式,研究结果表明:传输效率与品质因数成正比,且品质因数随着导线芯数的增加而增加;圆柱型螺线管构型具有传输距离远与传输方向性好等优点,更适用于磁耦合谐振式WPT。最后搭建了实验平台,验证了理论分析的正确性。     

珠海泥湾门大桥桩基施工质量事故的分析处理

本文主要分析泥湾门大桥桩基基身混凝土的质量缺陷和桩长不足两种质量问题产生的原因和处理方法。     

浅谈公路工程的监理工作

介绍了在公路工程监理过程中 ,在质量、费用、进度这三方面控制时应注重的工作内容     

新型双层空调旅客列车卫生学评价

为了解新型双层空调客车内卫生学状况，对行驶中的硬座和软座车厢的上、下层进行了卫生学调查。每层设前、中、后3点，司机室设1点。结果显示：两类车厢及司机室内微小气候指标中湿度、硬座车厢空气中CO2平均浓度超过国家卫生标准；软座车厢空气中CO2平均浓度叶未超标，但样品达标率人氏于硬座车厢，上层车厢的噪声强度高于下层车厢，并超标，硬座车厢噪声高于座车厢。     

武广客运专线岩溶地基的注浆加固质量控制

结合工程实例,介绍了客运专线岩溶地段注浆的工艺和方法,对基岩裂隙和岩溶孔洞注浆,封闭土、石表面形成隔水帷幕,提高CFG桩复合地基土承载力,减少地基沉降和不均匀沉降,通过现场原位试验,提出质量控制办法。     

低价中标之利弊

探究承包商报低价竞标的原因,分析低价中标之利弊,探索国际通常的做法,提出改进建议。     

理清思路深化改革突出特色确保质量

三十年来,青岛远洋船员学院始终坚持“适应市场,服务企业,突出特色,争创一流,打造教育精品”的办学指导思想,把“培养高素质的适应航运市场需求的高等技术应用性人才”作为办学质量方针,强化质量意识,牢固树立“人才培养质量是学校生命线、提高教学质量是学校永恒的主题”的观念,打造“敬业精神好,英语水平高,实践技能强”的人才培养特色,取得了显著成绩,创造了良好声誉,为实现学院的可持续发展战略奠定了坚实的基础。