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231.
航运经济解析 总被引:1,自引:0,他引:1
Peter Sand 《中国远洋航务》2010,(11)
宏观经济
在真正实现可持续增长之前,失业、外债和赤字问题依然严峻.
全球经济
世界贸易组织已经将2010年全球贸易增长率预期由今年3月的10%上调至13.5%.当前世界经济正在努力摆脱金融危机的阴霾,保持良好的增长势头. 相似文献
232.
Although France does not have a specific law dealing with shorelines management, various policies and policy instruments exist which enable a certain amount of control over the shoreline development process. This article discusses the various institutional arrangements in France as they relate to (1) problems of marine pollution, (2) the control of land‐based pressures for shoreline use and development, and (3) the creation of a new shorelands trust. The role of existing institutions, such as the six river basin agencies, is also discussed. 相似文献
233.
Peter. W. de Langen 《Coastal management》2013,41(2):215-224
This article presents an overview of trends relevant for the long-term development of Rotterdam's port complex and resulting opportunities for this complex. These trends resulted from a literature review and conversations with 20 professors in fields relevant for port development. Nine trends that can be expected to become increasingly important in the next decades are discussed. These trends include the rise of manufacturing and logistics platforms, higher land efficiency, increasingly mixed land use in port areas, and rising importance of a “regional innovation system” in ports. Opportunities and concerns for the port of Rotterdam resulting from the trends are discussed. 相似文献
234.
The aim of this paper is to analyse the decision-making process of shipowners when adopting flags of registration. More specifically, it is interested in examining the relative importance of the factors related to an individual company's decision to flag out. The decision to change flag is viwed as similar to any other strategic decision by a profit maximizing firm (shipping company) and therefore those variables which influence the attractiveness, for a given firm, of taking the flagging out decision are analysed. The approach is two-fold in that it employs both qualitative and quantitative analysis. The research is innovative in the sense that it uses an econometric approach and the analysis is based on original data which has been obtained by the authors via a questionnarie and personal interviews with members of the UK shipping industry. The results deal with two particular sectors namely the tanker and general cargo markets and provide an insight into the magnitude and significance of various factors which affect the choice of flag. It is able to provide indications of the likelihood of a particular vessel being flagged out under different cirumstaces and, further, to consider how changes in these circumstances might affect the probability of the event occuring. The paper is structured in six parts comprising an introduction, back ground, methodology, qualitative analysis, econometric analysis, and conclusions. 相似文献
235.
236.
The abolition of the national Dock Labour Scheme presented with the oppurtunity radically to transform their cargo handling operations. Port employers have seized this oppurtunity and introduced radical changes to workforce compositions, their skills, work practices, and employee relations. The main factor behind these changes has been the desire of operation to minimize labour costs and maximize labour utilization in order to amintain traffic volume and competitive advantage. The short-term effect has been to improve productivity and profitablity(at least for the major port authorities), but it has also produced iinstablity in employee relations ans may in the long term prove counter productive> 相似文献
237.
T. Fang R. E. Coverdill C. -F. F. Lee R. A. White 《International Journal of Automotive Technology》2009,10(3):285-295
In this paper, the influence of injection parameters on the transition from Premixed Charge Combustion Ignition (PCCI) combustion
to conventional diesel combustion was investigated in an optically accessible High-Speed Direct-Injection (HSDI) diesel engine
using multiple injection strategies. The heat release characteristics were analyzed using incylinder pressure for different
operating conditions. The whole cycle combustion process was visualized with a high-speed video camera by simultaneously capturing
the natural flame luminosity from both the bottom of the optical piston and the side window, showing the three dimensional
combustion structure within the combustion chamber. Eight operating conditions were selected to address the influences of
injection pressure, injection timing, and fuel quantity of the first injection on the development of second injection combustion.
For some cases with early first injection timing and a small fuel quantity, no liquid fuel is found when luminous flame points
appear, which shows that premixed combustion occurs for these cases. However, with the increase of first injection fuel quantity
and retardation of the first injection timing, the combustion mode transitions from PCCI combustion to diffusion flame combustion,
with liquid fuel being injected into the hot flame. The observed combustion phenomena are mainly determined by the ambient
temperature and pressure at the start of the second injection event. The start-of-injection ambient conditions are greatly
influenced by the first injection timing, fuel quantity, and injection pressure. Small fuel quantity and early injection timing
of the first injection event and high injection pressure are preferable for low sooting combustion. 相似文献
238.
Onboard decision support systems (DSS) are used to increase the operational safety of ships. Ideally, DSS can estimate future ship responses within a time scale of the order of 1–3 h taking into account speed and course changes, assuming stationary sea states. In principle, the calculations depend on a large amount of operational and environmental parameters, which will be known only in the statistical sense. The present paper suggests a procedure to incorporate random variables and associated uncertainties in the calculations of the outcrossing rates that are the basis for risk-based DSS. The procedure is based on parallel system analysis, and the paper derives and describes the main ideas. The concept is illustrated by an example, where the limit state of a non-linear ship response is considered. The results from the parallel system analysis are in agreement with corresponding Monte Carlo simulations. However, the computational speed of the parallel system analysis proved slower than expected. 相似文献
239.
Travel demand models implicitly assume that people respond to changes in a continuous way. This is in contrast to the physical sciences, where discontinuous response is a common phenomenon and is embodied in such concepts as sub-critical and supercritical states.Recent studies have shown that responses to transport policies differ in degree and kind according to the nature and severity of the stimulus and the types of people affected. Response patterns may be categorised by the extent to which they involve adjustments to spatio-temporal or inter-personal linkages. This paper identifies four response domains, with a further distinction between permissive and forced changes.Most travel demand models are designed to operate within an independent, forced (and to a less extent independent permissive) domain and their forecasts become unreliable when responses lie outside that domain. Conversely, a model designed for a more complex domain is unnecessarily cumbersome where simpler responses apply. This paper describes the types of model which are appropriate for each domain and discusses how the effects of a policy may be assigned to the correct domain(s). 相似文献
240.