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21.
A new wave of liberalisation of domestic airline competition is taking place in less developed nations, although the initial motivation in most cases is to supplement the capacity of the government's own airline. Liberalisation tends to begin with free market entry and a strong interest in privatisation while other regulatory controls are maintained. This position is untenable and policy makers in the less developed countries are having to learn quickly without the benefit of the detailed analyses that preceded liberalisation in the developed countries. This paper explores these problems and focuses on the lessons that policy makers in the less developed countries can draw from experiences elsewhere. 相似文献
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23.
Paul E. Kent 《Maritime Policy and Management》1995,22(2):155-170
The international maritime community is concerned about Panama's preparedness to undertake the responsibility of what many consider to be the world's greatest maritime asset, the Panama Canal. In accordance with treaty provisions, the longer within the dominion of the U.S. government and its attendant regulatory framework and policies. To a great extent, Panama's efforts to prepare for the transfer thus far have been driven by its objective of a seamless transfer, whereby the status quo (meaning the Canal's existing institutional and organizational framework and attendant policies and procedures) would be preserved as much as possible. This would assure the maritime community that it can expect the same service and cost standards traditionally enjoyed under the Panama Canal Commission's stewardship. Still of great concern, however, is the continued reliability and productivity of the Canal's labour force; the Canal's reliability and efficient performance in the past is often attributed to its history of harmonious labour management relations. This article addresses some of the critical labour relations issues that will need to be considered even if Panama's status quo objective for the transfer is achieved. 相似文献
24.
Marcel Veldhuis Cato ten Hallers Etienne Brutel de la Rivière Frank Fuhr Jan Finke Peter Paul Stehouwer Isabel van de Star Cees van Slooten 《WMU Journal of Maritime Affairs》2010,9(2):213-222
This paper offers an overview of the currently available Ballast Water Treatment systems, their efficacy in reducing the number of organisms in relation with the IMO and other, future standards, and explores potentially new and promising technologies and current gaps. 相似文献
25.
This paper proposes the conceptual model of the Asian (Port) Doctrine to explain the successful development of top ranking container ports in Asia during the past four decades. This paper draws a new paradigm for the role of government as a third governance approach in addition to Anglo-Saxon and European doctrines by describing how Asian countries have developed container hub ports by investing in infrastructure as social overhead capital to support export-led growth. We survey characteristics and outcomes in major Asian container port developments and one European port in terms of a port development policy. The findings are presented in a comparative overview of government investment in functional elements of port, maritime infrastructure and landside connections to container ports. This paper confirms that the existing two doctrines—Anglo-Saxon and European doctrines—are not sufficient to explain the Asian success in major container port developments. The proposed framework contends that a newly proposed Asian Doctrine can accomplish this with the help of cross-subsidization, strategic and administered port pricing mechanism. 相似文献
26.
Abstract Recent developments in the light rapid transit sector have introduced transit modes that are attempting to imitate the performance of others, e.g. buses with tram-like characteristics. The boundaries between existing definitions of what is a bus, tram or train are becoming blurred. For transport studies and practice this requires a review of how we define modes. This is not just a matter of semantics, but has safety and competition regulation implications for system operators. This paper proposes a structure to produce rail- and bus-based transit mode definitions and typology that are appropriate for modern use. A decision tree is used to classify and define the transit modes as guided-bus, trolley-bus, light rail and tram-train and is provided with example systems. The paper provides a robust definitional framework that allows transit system promoters, operators and other interested parties to have a consistent basis of reference when specifying and comparing rapid transit systems. 相似文献
27.
At transit terminals where two routes interchange passengers, total system costs may be reduced by allowing some “slack” time in the vehicle schedules to decrease the probability of missed connections. Transfer cost functions are formulated and used to determine optimal slack time for simple systems with transfers between one bus route and one rail line. Some analytic results are derived for empirical discrete and Gumbel distributions of bus arrival times. Relations between the optimal slack times and headways, transfer volumes, passenger time values, bus operating costs, and standard deviations of bus and train arrivals are also developed numerically using normally distributed arrivals. However, the proposed numerical approach can optimize slack times for any observed arrival distributions. The results provide some guidelines on desirable slack times and show that schedule coordination between the two routes is not worth attempting when standard deviations of arrivals exceed certain levels. Possible extensions of this work are suggested in the last section. 相似文献
28.
A model of communications media choice in business organizations is formulated based upon the results of exploratory interviews and the consumer choice literature. Choice is modelled as a function of organizational characteristics, individual characteristics, communication activity characteristics, communication initiator-recipient relationships and perceptions and feelings about available media. Hypotheses concerning media perceptions are developed from the exploratory interviews and tested using survey results from two firms in the Chicago region. The methodology developed in this research provides a useful approach to exploring preferences for and choices of communication media. As a paradigm for future research, it can be used to extend our understanding of communications media usage. 相似文献
29.
The measurement of transportation system reliability has become one of the central topics of travel demand studies. A growing literature concerns the measurement of value of travel time reliability which provides a monetary cost of avoiding unpredictable travel time. The goal of this study is to measure commuters’ sensitivities to travel time reliability and their willingness to pay (WTP) to avoid unreliable routes. The preferences are elicited through a pivoted stated preference survey technique. To circumvent the issue of presenting numerical distributions and statistical terms to day-to-day commuters, we use the frequency of delay days as a means of measuring traveler’s sensitivities to travel time reliability. The advantage of using simplified measures to elicit traveler preferences for travel time reliability is that these methods simply compare days with high delay to days with usual travel time. It was found that travelers are not only averse to the amount of unexpected delay but also to the frequency of days with unexpected delays. The paper presents WTP findings for three measures: travel time, frequency embedded travel time, and travel time reliability. The ‘reliability’ increase in WTP for travel time is found to be nearly proportional to the frequency of experiencing unexpected delays. For example, the WTP for mean travel time is calculated at $6.98/h; however, reliability adds $3.27 (about 50 % of $6.98) to avoid unexpected delays ‘5 out of 10 days’. The results of the study would provide valuable inputs to cost-benefit analyses and traffic and revenue studies required for road tolling investment projects. 相似文献
30.
对停车政策类型缺乏广泛理解会导致对城市停车政策的混淆。通过对各地停车政策学术研究和实践应用的综述,指出以往的政策分类或缺乏完整性,过于简单、不准确,或无法洞悉差异背后的本质。并且没有一项研究能对每种停车政策及改革背后的政策思路进行分析。为弥补这些缺陷,提出一种关于停车政策新的分类方法。该方法清晰地指出不同停车改革政策背后思维模式的差异。通过回顾不同地区(国际和都市区内部地区)停车改革实践,验证分类方法的价值并提出改进措施。通过两个关键问题定义三种停车政策模式。每个模式对停车作为一种经济产品的本质提出不同的基础假设。通过第三个问题确立分类模式的第三个维度。新方法的提出能减少由于合并不同形式造成的停车争论偏好的混淆,包括假两难推理和偷换概念等关键替代形式。 相似文献