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651.
H. D. Smith 《Maritime Policy and Management》1977,4(6):351-376
The problems associated with hydrocarbon extraction in the EEZ are discussed under the headings of resources and environment, technology and the industrial structure, government management, decision-making, and policy formulation. Policy areas identified include boundary delimitation relative to resources, environment and technology, co-ordination and decision-making machinery, relationships with UK and EEC energy policies, and regional planning of the sea and coastal areas used by the off-shore industry. 相似文献
652.
653.
Public transport managers and operators face increasingly difficult problems in providing adequate levels of service at reasonable social and financial costs. A greater demand exists for analytical techniques which allow them to evaluate changes in operational strategies before committing themselves to implementation in the field. This paper describes the development of a discrete event simulation model for the analysis of on-street transit routes. The structure of the model is described and details are provided of the types of events which are explicitly modelled in the TRAMS package. The input requirements are described, and the modular nature of the simulation model is highlighted. The various options for output format are described, including the use of a computer graphics real-time animation option. The range of output performance measures are then discussed, and some comments on areas of application conclude the paper. 相似文献
654.
Non-Contact Suspension and Propulsion Technology 总被引:3,自引:0,他引:3
H. Alscher M. Iguchi A. R. Eastham I. Boldea 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1983,12(4):259-289
As a result of extensive research and development in several countries, the technologies of magnetic suspension and linear electric drives are becoming available for transportation applications. The successful demonstration and operation of prototype vehicles has established the technical viability of these systems. Several urban transit or shuttle services, with magnetic suspension and/or linear motor propulsion are likely to be operational within 3-4 years. After the final stages ofdevelopment and rigorous testing, high speed systems are likely to be an option for intercity implementation by the end of the decade. This paper presents a report on the worldwide status of R&D and test programs of non-contact suspension and propulsion technology for guided ground transport. 相似文献
655.
H. P. Y. Hitch 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1981,10(4):319-332
The state-of-the-art in analysing a number of ground manoeuvring processes on aircraft is described. The mathematical models are as good as the data supplied to them. 相似文献
656.
657.
Decentralization is a major theme of organizational change in shipping. It is often seen as 'putting power back aboard ship'. However, the authors argue that this view is too simple. Decentralization poses fundamental questions about the entire management structure of the shipping company. The redistribution of authority necessary for decentralization is discussed in terms of the company organization structure. 相似文献
658.
659.
The authors of this paper make use of computer simulation techniques as a means of investigating the problems associated with minimizing a ship's turn-round time. 相似文献
660.
J. David Diltz 《Transportation》1982,11(3):217-233
A sample of 1000 households completed a questionnaire regarding difficulties encountered purchasing gasoline during the week 4–10 June 1979 and whether difficulties encountered purchasing gasoline affected household automobile tripmaking. Results of this survey were analyzed and it was found that the frequency of reporting purchasing difficulties varied directly with household income and inversely with the age of the household. The frequency of reporting that purchasing difficulties affected automobile trip-making varied directly with household income and inversely with the number of adults in the household. Further, although individual household response was highly sensitive to socioeconomic characteristics, the overall response to the survey would not have differed significantly had the socioeconomic mix of households been different. 相似文献