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Recreation: Marine Promise, Proceedings of the National Conference on Marine Recreation Susan H. Andersen, Ed., October 2–4, 1975, Newport Beach, California Parable Beach: A Primer in Coastal Zone Economics by J. W. Devanney III, G. Ashe, and B. Parkhurst, The MIT Press, 1976, 99 pp. Marine Recreational Fisheries, Proceedings of the First Annual Marine Recreational Fisheries Symposium Henry Clepper, ed., New Orleans, Louisiana, February 27, 1976. 相似文献
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Matthijs Klomp Mats Jonasson Leo Laine Leon Henderson Enrico Regolin Stefan Schumi 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2019,57(7):1028-1061
ABSTRACTIn this paper, we describe how vehicle systems and the vehicle motion control are affected by automated driving on public roads. We describe the redundancy needed for a road vehicle to meet certain safety goals. The concept of system safety as well as system solutions to fault tolerant actuation of steering and braking and the associated fault tolerant power supply is described. Notably restriction of the operational domain in case of reduced capability of the driving automation system is discussed. Further we consider path tracking, state estimation of vehicle motion control required for automated driving as well as an example of a minimum risk manoeuver and redundant steering by means of differential braking. The steering by differential braking could offer heterogeneous or dissimilar redundancy that complements the redundancy of described fault tolerant steering systems for driving automation equipped vehicles. Finally, the important topic of verification of driving automation systems is addressed. 相似文献
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Second-order estimates to measure platform reliability are generated and used to provide an additional space to select safety
margins appropriate to the owner's perception or for risk-averse managers. The aleatory and epistemic uncertainties in the
parameters of an offshore platform are explicitly considered in the reliability analysis and the platform structural reliability
becomes a random variable, assessing then the beneficial effects of a reduction on these uncertainties. One of these benefits
is for risk-aversive managers who often demand additional room to make conservative decisions regarding reliability estimations.
Proposed here is a procedure to generate the frequency diagram of platform reliability with the use of confidence bounds to
support reliability and cost decisions based on percentiles instead of mean values. The concepts are illustrated through a
typical offshore platform in Mexico. The frequency diagram of the platform reliability index is built for several alternative
designs and three levels of epistemic uncertainty. The results may be applied for decision making on new designs and also
on the assessment and optimal inspection, retrofit, and decommissioning of existing platforms. 相似文献
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国产的三菱蓝瑟翼神1.8L致尚型在整体设计上更多向性能看齐,原装进口的发动机是这款车最大的亮点,而变速箱、悬挂等方面的表现,也是可圈可点。 相似文献
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Leon RaykinMatthew J. Roorda Heather L. MacLean 《Transportation Research Part D: Transport and Environment》2012,17(3):243-250
We evaluate the implications of a range of driving patterns on the tank-to-wheel energy use of plug-in hybrid electric vehicles. The driving patterns, which reflect short distance, low speed, and congested city driving to long distance, high speed, and uncongested highway driving, are estimated using an approach that involves linked traffic assignment and vehicle motion models. We find substantial variation in tank-to-wheel energy use of plug-in hybrid electric vehicles across driving patterns. Tank-to-wheel petroleum energy use on a per kilometer basis is lowest for the city and highest for the highway driving, with the opposite holding for a conventional internal combustion engine vehicle. 相似文献
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Inadequate ports are a major problem in many less developed countries (LDCS). In an era in which international trade involving developing countries is growing rapidly, decisions must be made to provide the necessary infrastructure and superstructure to facilitate the movement of cargo from ship to shore and vice versa. In LDCS, the phenonmenon of the Combined Naval-Commercial Port (CNCP) has not undergone scrutiny. This paper is concerned with describing the nature of the Latin American CNCP. The hypothesis is that commercial port interests have been adversely affected by coexistence. The results of an unquiry comprise the main body of this research. 相似文献
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