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281.
冷却水排水建筑物布置是滨海核电厂水工建筑物布置设计中的关键问题,排水建筑物不仅确保核电厂冷却水系统正常运行,同时保护核电厂免受风暴潮危害影响。通过对已建滨海核电厂冷却水排水建筑物布置特点进行分类阐述,为排水建筑物布置设计提供工程应用参考。 相似文献
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文章首先介绍了目前发达国家所采取的沿海溢油监测监视防范体系,分析了雷达数据在其监测监视体系中的地位和作用,然后介绍了我国在沿海溢油监测监视防范体系建设方面的现状,并分析了制约雷达数据在我国实际应用中存在的问题。利用Envisat的ASAR数据对发生在西班牙海域的溢油事件进行了半自动化的溢油油膜范围的提取,给出了处理结果,并对目前国外就雷达数据在其监视监测体系中的应用方法进行了介绍。根据国内外沿海溢油监测监视体系的现状对比和国内制约因素的分析,结合实例数据的分析处理结果,表明雷达数据在沿海溢油监测中具有突出优点,未来在我国近岸海域溢油监测体系中将得到较为广泛的应用。 相似文献
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文章介绍了广西沿海三港—防城港、钦州港和北海港进港航道的现状和建设情况。指出科学合理地确定航道的建设规模、走向和选取合适的航道尺度,是广西沿海港口航道工程建设的关键和重点。 相似文献
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We present a cost-benefit analysis of coastal protection via seawalls in South Korea against climate-change-induced sea level rise. This is the first bottom-up analysis for South Korea, deriving the optimal solution from extensive geographical and financial databases with detailed street-address-level information. Our analysis indicates that the net benefit is maximized if seawalls are built along 21% of the South Korean coast. By comparing the bottom-up solution to the aggregate solution and utilizing a comprehensive sensitivity analysis, we highlight two implications for the climate change economics literature. First, the country-level aggregate analysis adopted by many existing studies may include a sizable aggregation bias. Second, relative to the climate change mitigation problem, the coastal protection problem is less sensitive to the choice of the discount rate. 相似文献
289.
This study investigates the effects of sociodemographic and economic status on the differences in environmental awareness, risk perception, and stewardship of the Mekong Delta residents based on a survey conducted in person with 1,006 households across the delta system. Spatial visualization and a multiple correspondence analysis (MCA) were performed on the survey results to discover underlying factors of the participants' responses. The study results revealed that public environmental awareness in the Mekong Delta is still limited. The level of environmental awareness, risk perception, and understanding of stewardship of local people varies by location. Furthermore, how the Mekong Delta dwellers perceive environmental risks and behave toward environmental protection is unlikely to be influenced by their demographic profiles. However, they are significantly affected by the economic status including income levels and sources. Poor economic status was found to significantly hamper pro-environmental behavior of Mekong Delta people regardless of their knowledge of environmental degradation and the related consequences. These findings provide key information to assist policymakers in developing a successful and sustainable disaster risk reduction mitigation plan for the Mekong Delta region. The implications may also be applicable for other coastal zones, which are composed of similar sociodemographic, economic, and environmental conditions. 相似文献
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Fredrick Ekow Jonah Emmanuel Abeashi Mensah Regina Esi Edziyie Nelson Winston Agbo 《Coastal management》2016,44(2):116-130
Coastal erosion is a serious problem that affects the safety and livelihoods of many coastal dwellers along Ghana's coast. Despite the fact that coastal erosion is a natural phenomenon, erosion trends have been largely aggravated by human-induced factors. This study analyzed shoreline change rates for three neighbouring coastal communities in the Central region of Ghana; Elmina, Cape Coast and Moree. Two epochs were analyzed, 1974–2012 (medium-term) and 2005–2012 (short-term), using ArcGIS and Digital Shoreline Analysis System. Overall, the entire study area recorded average shoreline change rates of ?1.24 myear?1 and ?0.85 myear?1 in the medium-term and short-term period respectively. Less consolidated shoreline segments recorded higher erosion rates in both periods while cliffs and rocky segments experienced very little erosion or high stability. Because shorelines undergoing chronic erosion do not fully recover after short-term erosion events such as storms, facilities located close to such shorelines are threatened. Taking a proactive approach to coastal erosion management, such as coastal sand mining prevention, inter-sectoral land use management and adopting a construction setback approach may be prudent for the long-term management of the coast since this recognizes future shoreline changes and safeguards coastal landscape for other uses. 相似文献