宝中线六盘山越岭增建第二线限制坡度方案研究

结合宝中线增建第二线平凉南至固原段地形地貌、经济运量、机车牵引质量、制动性能、工程设置及投资、运营费和机车购置费等方面进行分析、比选,确定推荐的限制坡度方案。从工程设置及投资分析,13‰双机坡方案主隧道长度较短、工程投资较节省;统筹西平线运输特点综合分析,6/13‰单机均衡坡方案具有运输效率高,运营成本最低的明显优势。推荐6/13‰单机均衡坡方案是本项目选线的创新。     

海洋科学考察船动力系统现状及发展趋势概述

本文结合国内外海洋科学考察船的现状和发展趋势,详细地分析了国内外海洋科学考察船动力系统的发展现状,明确了科学考察船动力系统采用电力推进、大型化、集成化发展趋势,提出了大型化、集成化、低噪声、智能化、节能环保等的发展方向,对我国海洋科学考察船动力系统的选配、设计起到指导性作用。     

沿海铁路通道货物运输方案研究

根据东南沿海港口和临港工业的发展及港口铁路支线建设对铁路货物运输的迫切需求,结合《中长期铁路网规划（2008年调整）》中沿海铁路通道规划格局,分析沿海铁路通道客货运需求及不同区段客货运量特点、通道货流构成及流向特征、沿海港口铁路支线后方集疏运通道径路及特点。根据既有沿海铁路建设标准、货运设施分布、能力适应性和运输模式,分析目前制约货物运输的主要因素;结合沿海铁路功能定位和运输能力,提出阶段性解决通道货物运输的建议意见。     

POD推进器技术发展及其应用前景

POD推进器是近年来发展起来的一种新型的船舶推进装置,该装置可以提高舰船总体性能,节省舱室空间,增加有效载荷,提高舰船的使用效能,可充分发挥电力推进系统的优越性,因而具有极高的应用价值和广阔的市场应用前景.通过介绍POD推进器的技术的发展概况,总结了POD推进器的主要特点,概述了其主要类型,分析了POD推进器的应用前景.     

对交通科技进步贡献率测算中主要指标范围问题的探讨

在介绍科技进步贡献率测算常用方法的基础上,结合江苏交通统计年鉴数据现状和交通科技统计工作开展的实际情况,对如何准确进行江苏省交通科技进步贡献率测算问题进行了探讨,初步提出了应该选取的主要指标及其范围,并就如何在今后的工作中对这些指标数据进行采集进行了分析。     

动态控制方法在高速公路工程进度监管中的应用

本文研究和探索了工程进度监管方法,阐述了动态控制理论在高速公路工程进度监督管理工作中的应用。     

A regression on climate policy: The European Commission’s legislation to reduce CO2 emissions from automobiles

As part of its efforts to reach the targets of the Kyoto Protocol, in April 2009 the European Commission enacted new legislation to reduce the per-kilometer CO₂ emissions of newly registered automobiles. This paper critically assesses this legislation with respect to its economic and technological underpinnings. First, we argue that the reliance on targets based on per-kilometer emissions not only conceals the true cost of compliance and thereby stifles informed public discourse, but is also less cost-effective than alternative measures such as emissions trading. Second, the emission targets stipulated in this legislation are based on linear-regression methods that we demonstrate to be poorly justified and misleading. Using instead stochastic-frontier analysis, which is argued to more accurately reflect the industry’s technological status quo, alternative targets are consequently proposed.     

Underwater Cultural Heritage Policies of the United States Coastal Zone

Domestic management of historic shipwrecks and other Underwater Cultural Heritage (UCH) resources located in the United States coastal zone is extensively fragmented and a portion of it has significant implications in terms of international law. In the United States coastal zone, UCH (largely historic shipwrecks) falls under one of three general regimes, depending on where the resource is located and subject to specific and individual requirements: the General Maritime Law, the Abandoned Shipwreck Act, and the Marine Protection, Research and Sanctuaries Act, also known as the Marine Sanctuaries Act. After examining the development of and current status of these regimes, this article will suggest policies for a stronger, more coordinated federal management regime in United States coastal waters. It will specifically argue that a recent decision by the United States Court of Appeals for the Fourth Circuit provides a well-designed paradigm that could be linked with pertinent aspects of the three identified regimes to create a unified coastal governance mechanism for sunken historic shipwrecks.     

固体氧化物燃料电池的研究

固体氧化物燃料电池(SOFC)作为一种新型的能量转换装置,由于其具有高能量利用率、环境友好、燃料选择广泛等特性,已经引起了学者的广泛关注.随着世界各国对环保问题关注的升温,友好型能源的开发利用已经成为国家能源发展的重要方向,在国家政策的推动下,高校和相关研究机构也加大了研究力度,争取在环境友好型能源的开发利用上抢占先机...     

论高速公路工程进度监理

介绍高速公路工程进度控制的概念,分析影响工程进度的主要原因,从而论述进度监理的作用、任务、依据、程序、要点、方法、手段,以及进度与质量、费用的关系,可供施工监理人员参考．