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61.
高新区内居民小区的交通出行是高新区交通出行的一部分,通过对调查数据的整理分析,选取恰当的高峰小时系数,算出小区单位住户平均一天的出行生成次数,了解和分析高新区居民小区的交通出行,为高新区内的路网规划建设提供参考。  相似文献   
62.
In this paper, the concept ‘green approaches’ already used in aviation is applied to cargo transportation at sea. Instead of anchoring outside a port waiting for berth, ships can adjust their speed to arrive just in time for berthing. With improved incentives for reducing speed and shared information about berthing times, green approaches instead of anchoring can be a way to reduce fuel consumption and emissions without increasing the transit times of goods. The present study estimates the benefits to society as a whole for the EU ports in the Baltic Sea with Automatic Identification System data applying a new method using data collected in real time. Data consists of all anchored ships awaiting berth on 40 different occasions in 2015 and are subsequently extrapolated to a year. Fuel consumption by the individual ships, emissions and values are calculated from the detailed data with established models and estimates of unit values. The potential benefits are estimated at 27 million euros per year in the scenario where the near 15,000 anchorings by ships annually awaiting berth may instead start a green approach 12 h prior to arrival and may reduce speed by 25%, using the middle unit values for fuel and emissions. The methodology used in the paper can be applied to estimate the benefits of green approaches in other areas with anchored vessels.  相似文献   
63.
DS特区1     
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64.
采用外生性影响因素与随机前沿生产函数模型联合估计的方法,对公路货运效率展开实证研究.结果显示:皖江城市带建设对公路货运效率具有积极的推动作用,但存在“塌陷”现象;考察期间安徽省公路货运技术效率仍处于较低水平,存在公路货运业发展粗放,资源浪费现象;经济发展水平、财政及开放程度促进技术效率提升,但该作用存在地区差异;产业结构、等级公路占比阻碍技术效率提升,运输需求的增加及等级公路的投资建设并不意味着运输效率的提升.最后,根据上述发现并结合实际给出优化安徽省公路货运效率的建议.  相似文献   
65.
用区域模拟方法评估舰艇火灾危险性   总被引:2,自引:0,他引:2  
将火灾区域模拟方法运用到舰船舱室火灾分析中,建立了全船各舱室的区域模拟模型,进行了模拟计算;根据火灾形成和蔓延的机制,确定了火灾蔓延判据.进行了全船火灾危险等级划分;在舱室区域模拟的基础上,应用模拟试验的方法,针对不同武器攻击情况,根据火灾蔓延判据和危险等级划分,编制了全船综合性评估程序,对全船火灾危险性进行评估.  相似文献   
66.
锚泊中船舶卧底链长的一种估算方法   总被引:1,自引:0,他引:1  
于洋  李伟 《中国航海》2002,(1):40-42
为了从定量上掌握锚泊船卧底锚链的长度 ,保证锚泊安全 ,本文根据锚链悬链线特殊性质 ,提出了在出链长度一定的情况下估算卧底链长的一种简易方法 ,即根据锚链在锚链筒外孔处与铅垂线的夹角来估算卧底链长的方法 ,并对估算误差作了简要分析。分析表明 ,当锚链张角 <5 0°时 ,误差较小 ;当锚链张角 >6 0°时 ,误差偏大 ,但仍可满足航海实践需要  相似文献   
67.
广州南沙港区的发展建设,对广州市南拓发展战略实施具有特别重要的作用.从区位条件,硬件设备等方面,南沙港区具备建设保税港区的优势.在南山港发展存在问题分析的基础上,提出了加快配套设施建设,完善珠三角港口群功能等对策建议.  相似文献   
68.
鄱阳湖生态经济区红色旅游与生态旅游的和谐发展研究   总被引:1,自引:0,他引:1  
研究鄱阳湖生态经济区红色旅游与生态旅游和谐发展,发挥红色旅游资源与生态旅游资源的经济、政治、文化、生态功能,将有利于促进该区物质文明、社会文明、生态文明协调发展。该区丰富的红色旅游资源和生态旅游资源、各级政府的大力支持、便捷的交通网络等使得鄱阳湖生态经济区红色旅游与生态旅游和谐发展具有可能性。要将这种可能性转化为现实性,必须制定科学合理的发展规划,打造融合红色旅游与生态旅游的旅游区,正确处理旅游资源保护与开发利用的关系。  相似文献   
69.
The federal consistency provision of the Coastal Zone Management Act (1972) created a new form of interaction between federal and state governments. The implementation of this provision has significant ramifications for coastal management and intergovernmental cooperation in the United States. Past studies have focused on the provision's implementation patterns among U.S. coastal states and federal-state disputes mediated by the Secretary of Commerce. This supplemental article examines judicial interpretations of the federal consistency provision over the past two decades in relation to major issues deliberated by Congress at the time of enactment. Recent changes in the provision, as well as those unresolved issues likely to resurface in future litigation, are also discussed. Seemingly, coastal land use authority and offshore energy exploration remain the most contentious issues surrounding the federal consistency provision.  相似文献   
70.
Nearly 40 years on since its first tentative steps in North America, this article considers whether Integrated Zone Coastal Management (ICZM) in Europe has grown to maturity as a form of governance. The article summarizes the findings of recent research concerning the levels of implementation of coastal management in Europe, with particular reference to the UK experience. A research framework is used to identify the different motivations behind the social actor groups involved in coastal management. The application of this framework reveals four major findings about gaps in implementation: (1) the complexity of responsibilities at the coast continues to prevent agencies from taking a “joined-up” approach; (2) a policy vacuum is constraining implementation from national to local scales; (3) informational obstacles are significant in preventing co-ordination between science and policymakers, and between different sectors; (4) a democratic deficit is preventing implementation in the working practices of coastal stakeholders, with little opportunity in decision making for public comment or local accountability, especially offshore. The article also explores different conceptualizations of the role of coastal management and planning held across Europe, providing an analysis using the Strategic Management literature and the experience of the EU Demonstration Programme on Integrated Coastal Zone Management (1996–1999). Recent arrangements, with the availability of priming funds from the European Commission and emphasis on “pilot” and “demonstration” methods, have tended to encourage a project-based approach to ICZM that may fail to realize long-term objectives. The article seeks to present an analysis of the behaviors of scientists, academics, policymakers, and practitioners, and will be of interest to all those seeking to establish ICZM within the wider system of governance, as supported by the Commission of the European Community (2000) Communication on ICZM (COM 547). Some technical solutions are also offered from the UK experience that will be of use to coastal project officers working at national and regional levels.  相似文献   
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