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71.
In January 2009, following a lengthy industry review and consultation process, the New Zealand Public Transport Management Act (PTMA) came into force. The Act allows Regional Transport Authorities, as the primary procurers of public transport services, to place either a control or a contracting requirement upon services that are registered as commercial requiring no subsidy. The imposition of either the control or the contracting requirement is designed to facilitate greater system integration, improve service continuity and enhance services to the customer, andallow the Authority to invest in key strategic projects, such as integrated fares and ticketing, so as to grow patronage.The PTMA’s other objective is to ensure improved value for public subsidies. Recent years have seen significant subsidy inflation for seemingly little commensurate benefits. The Act will allow the Regional Transport Authority to achieve greater value for money through improved farebox, a shift to longer, larger contracts to increase competition in the market, a more appropriate allocation of risk, and the removal of the ability of operators to ‘game’ the current system by using strategically placed commercial services as barriers to competition.Similar concerns have also stimulated new legislation in the UK and this paper illustrates the parallels in the environment and proposed response. 相似文献
72.
Andrew Fulbook 《汽车与配件》2006,(2):42-46
“欧洲人已经学会了如何面对昂贵的燃油价格 (主要是指燃油税)。数十年来,欧洲社会一直努力去适应较高的燃油价格,而且已经建立了许多有效的机制 相似文献
73.
With the ability to accurately forecast road traffic conditions several hours, days and even months ahead of time, both travellers and network managers can take pro-active measures to minimise congestion, saving time, money and emissions. This study evaluates a previously developed random forest algorithm, RoadCast, which was designed to achieve this task. RoadCast incorporates contexts using machine learning to forecast more accurately contexts such as public holidays, sporting events and school term dates. This paper evaluates the potential of RoadCast as a traffic forecasting algorithm for use in Intelligent Transport System applications. Tests are undertaken using a number of different forecast horizons and varying amounts of training data, and an implementation procedure is recommended. 相似文献
74.
Gerard de Jong Andrew Daly Marits Pieters Stephen Miller Ronald Plasmeijer Frank Hofman 《Transportation》2007,34(4):375-395
This paper provides a review of transport model applications that not only provide a central traffic forecast (or forecasts
for a few scenarios), but also quantify the uncertainty in the traffic forecasts in the form of a confidence interval or related
measures. Both uncertainty that results from using uncertain inputs (e.g. on income) and uncertainty in the model itself are
treated. The paper goes on to describe the methods used and the results obtained for a case study in quantifying uncertainty
in traffic forecasts in The Netherlands.
相似文献
Gerard de JongEmail: |
75.
Batley Richard Bates John Bliemer Michiel Börjesson Maria Bourdon Jeremy Cabral Manuel Ojeda Chintakayala Phani Kumar Choudhury Charisma Daly Andrew Dekker Thijs Drivyla Efie Fowkes Tony Hess Stephane Heywood Chris Johnson Daniel Laird James Mackie Peter Parkin John Sanders Stefan Sheldon Rob Wardman Mark Worsley Tom 《Transportation》2019,46(3):583-621
Transportation - This paper provides an overview of the study ‘Provision of market research for value of time savings and reliability’ undertaken by the Arup/ITS Leeds/Accent consortium... 相似文献
76.
Andrew S. Jakes 《先进运输杂志》1999,33(1):83-100
Procurement of an Automated Guideway Transit (AGT) system is a relatively new process for many procuring agencies worldwide. Outside of large airports, no single transit market sector has enough experience to establish well proven procurement methodologies for innovative transit technologies. Several methods, however, have emerged recently which, together with more conventional approaches, make the decision making process quite complex. The objective of this article is to review currently used and recently considered procurement methods and recommend a methodology for their selection depending on specific project requirements. 相似文献
77.
David Tozer Andrew Penfold 《上海造船》2008,(1):1-3
集装箱贸易显著的增长不仅表现在集装箱船队的总箱数已超过1100万箱,还表现在船的大小上。今天使用中的最大的集装箱船已超过1万箱。 相似文献
78.
The ability of conventional South African travel analysis practices to analyse adequately the travel needs of the poor is examined. The origins and nature of conventional practices are described, and it is observed that typically their scope has been limited to motorized modes, commutes and peaks. The paper reports on the findings of an activity diary survey administered in Cape Town that extended the conventional scope of analysis. An activity‐based survey method was selected because it typically yields higher rates of trip recall than other methods and is therefore relatively well suited to investigating travel behaviour in its fuller complexity. Selected findings of the survey are presented to demonstrate that travel occurring by non‐motorized modes, for non‐work purposes and during off‐peak periods, is considerable. It is argued that the conventional limitation in analytical scope can create serious misconceptions of the true nature of travel behaviour, particularly of low‐income households. By restricting the focus of analysis to motorized, work and peak period trip‐making, there is a risk of a routine bias being introduced in the way the urban passenger transport problem is understood, and in the nature of the interventions that are implemented as a result. 相似文献
79.
Peng Peng Lawrence V. Snyder Andrew Lim Zuli Liu 《Transportation Research Part B: Methodological》2011,45(8):1190-1211
This paper studies a strategic supply chain management problem to design reliable networks that perform as well as possible under normal conditions, while also performing relatively well when disruptions strike. We present a mixed-integer programming model whose objective is to minimize the nominal cost (the cost when no disruptions occur) while reducing the disruption risk using the p-robustness criterion (which bounds the cost in disruption scenarios). We propose a hybrid metaheuristic algorithm that is based on genetic algorithms, local improvement, and the shortest augmenting path method. Numerical tests show that the heuristic greatly outperforms CPLEX in terms of solution speed, while still delivering excellent solution quality. We demonstrate the tradeoff between the nominal cost and system reliability, showing that substantial improvements in reliability are often possible with minimal increases in cost. We also show that our model produces solutions that are less conservative than those generated by common robustness measures. 相似文献
80.
The study of respondent heterogeneity is one of the main areas of research in the field of choice modelling. The general emphasis
is on variations across respondents in relative taste parameters while maintaining the assumption of homogeneous utility maximising
decision rules. While recent work has allowed for differences in the utility specification across respondents in the context
of looking at heterogeneous information processing strategies, the underlying assumption that all respondents employ the same
choice paradigm remains. This is despite evidence in the literature that different paradigms work differently well on given
datasets. In this article, we argue that such differences may in fact extend to respondents within a single dataset. We accommodate
these differences in a latent class model, where individual classes make use of different underlying paradigms. We present
four applications using three different datasets, showing mixtures between “standard” random utility maximisation models and
lexicography based models, models with multiple reference points, elimination by aspects models and random regret minimisation
models. In each of the case studies, the behavioural mixing model obtains significant gains in fit over the base structure
where all respondents are hypothesised to use the same rule. The findings offer important further insights into the behavioural
patterns of respondents. There is also evidence that what is retrieved as taste heterogeneity in standard models may in fact
be heterogeneity in decision rules. 相似文献