互通式立交交织区研究

交织区是互通交通流运行的“瓶颈”路段,其处理结果直接影响公路的运行效率.通过实例计算对互通交织区车辆运行状态进行分析,对互通交织区的运行提出一些参考性建议.     

高速公路单车道入口匝道合流区服务水平分析

通过对美国HCM高速公路服务能力测算方法进行研究,结合深圳外环高速公路工程实例,对高速公路合流区的服务水平进行合理评测,以期对合理制定高速公路的建设规模起到有效的指导作用,避免高速公路互通匝道合流区的瓶颈制约整条高速公路的运营使用。     

兵团垦区公路低造价设计要点分析

针对兵团公路特点,结合工程实例,从技术标准、路线、路基、路面、桥涵和交通工程等主要方面,总结兵团垦区公路降低造价的设计方法,可供以后的设计参考借鉴,真正起到从设计方面降低兵团垦区公路造价的作用.     

城市干道衔接区域交通空间特征分析

为剖析衔接区域交通空间资源对城市干道的交通影响规律,分析干道衔接区域的土地利用、路网结构和信控交叉口等交通空间特征,探讨了条带状用地与聚集式用地特征,阐述了路网等级体系、密度与微循环系统设置状况,给出了信控交叉口位置、单点与联动配时策略,有利于城市干道交通出行规律研究与交通管理措施制定.     

基于北斗卫星授时的高速公路雾区智能诱导系统

诱导系统自带雨雾冰雪传感器,能够在雨雾等恶劣天气下自动控制诱导灯带的开关和频闪。特别是采用了北斗卫星授时模块作为高速公路雾区智能诱导系统的时间基准,解决了系统内数量众多的诱导灯频闪的同步问题,提高了雾区诱导系统的实用性。     

论发展我国的海上起重抢险打捞作业

〔〕本文论述了我国海上起重抢险打捞作业的重要意义。使用大型海洋起重船进行起重打捞是一种新型的打捞方法,具有快速、强力、作业安全可靠的特点。起重打捞作业方法的实现,使海上抢险打捞的业绩达到了新的高度。     

龙口港万吨级多用途泊位升级改造工程控制要点

结合烟台港龙口港区2×2万吨级多用途泊位（14#,15#泊位）工程码头结构加固改造方案,通过对码头结构、码头前沿水深、回旋水域等改造,满足5万吨级船舶靠泊要求,提升了现有泊位的靠泊等级,确保了码头主体结构的安全。为沿海港口码头结构加固改造工作提供借鉴。     

The Origins and Early Implementation of the Magnuson-Stevens Fishery Conservation and Management Act of 1976

The Magnuson-Stevens Fishery Management and Conservation Act, enacted in 1974, is the primary federal fishery management legislation in the United States. The political impetus that led to enactment was the extensive foreign fish off U.S. shores that expanded following World War II and the failure of international negotiations to prevent the decline in many fisheries relied upon by domestic fishers. In Congress, there was uncertainty as to whether a comprehensive management program would be created along with a unilateral extension of fishery management jurisdiction out to 200 nautical miles. The delay in agreement over a new United Nations Law of the Sea Treaty and resolution of the extent of coastal nation jurisdiction over fisheries culminated in enactment of the legislation sponsored by Senator Warren Magnuson, a Democrat from Washington State, and Senator Ted Stevens, a Republican from the State of Alaska.     

现行荷载规范船舶排水量和受风面积的曲线拟合

对港口工程荷载规范2010版中75%保证率下的船舶排水量和受风面积进行了曲线拟合,计算结果与规范计算结 果基本一致,表明了所提出的拟合曲线适用于不同船型的船舶排水量和受风面积计算,为规范中未包括的船型排水量和受 风面积的计算提供了一个更趋于合理、简便、精确的新方法。     

Next generation mega container ports: implications of traffic composition on sea space demand

ABSTRACT

Demand for sea space brought about by increasing container-shipping traffic has important implications on how this space is managed and used. This is particularly important given the long-term nature, high-asset specificity, high- opportunity cost of investment, and significant economic impact of container port activity on a locality. The challenge is especially pressing for ports, which are facing constraints in seaside capacity where container traffic also has to co-exist with the needs of other types of ship traffic. This challenge is likely be multiplied for next generation container ports, which are expected to handle even larger traffic volumes. These ports are also likely to face competing sea space demands from other economic and social activities especially when they are concurrently major confluences of trade, logistics, and urban populations. This is the first research to investigate in detail the impact and importance of investigating sea space requirements from the perspective of cargo traffic composition and ship capacity. Results show that transshipment containers can generate much higher demand for sea space due to the higher volume of shipping capacity that accompanies such traffic. Sustainability issues and managerial and policy implications pertaining to the development of next generation container ports are provided.