美国铁路重载运输

介绍了美国铁路重载运输的现状.     

康明斯发布满足EPA2010年排放标准的全系列中重型车用柴油机

一年一度的美国中部地区卡车展览会(Mid America Truck Show)于今年3月19～21日在肯塔基州路易斯维尔如期举行,康明斯展出了全系列满足EPA 2010排放标准的中马力(6.7、8.3和9升)和重型柴油机(11.9升和15升)产品.     

康明斯三季度业绩再攀新高

康明斯公司日前发布了三季度财务公报,销售额和利润再创新高。三季度的大好形势主要归因于国际业务的强劲增势．有效抵消了北美消费品市场持续走低和欧洲市场疲软带来的负面影响。     

康明斯荣获美国《汽车新闻》杂志2008年度“产品创新奖”

美国《汽车新闻》杂志日前在底特律举行典礼．颁发2008年度“一级供应商杰出贡献奖”（PACEAWARD）．康明斯公司为克莱斯勒道奇公羊重型皮卡车研制开发的6．7升直列六缸全电控涡轮增压柴油机喜获其中的“产品创新奖”。     

环球竞赛号机动船创最新环游地球纪录

装备两台康明斯－水星QSC型8．3升540马力全电控船用发动机、燃用B100生物柴油（100％的生物柴油）的“环球竞赛号（Earthrace）”高速环保机动船6月27日抵达西班牙萨贡托港,结束了为期60天23小时49分钟的环球航程,从而打破英国高速船“大东电报号（Cable＆Wireless）”十年前创下的74天20小时58分钟纪录。     

Does a circular high-speed rail network promote efficiency and spatial equity in transport accessibility? Evidence from Hainan Island,China

This paper investigates the efficiency and spatial equity impacts of a unique island-looping high-speed rail (HSR) network in Hainan province, China. An integrated network and raster-based model is applied to accurately measure the accessibility indicators. We perform analysis at four different geographical planning levels – island, corridor, spillover, and county level. The HSR with a non-polarized topology can increase the accessibility of the entire island and corridor, but only leads to a slight increase in the spillover areas without HSR stations. HSR construction also leads to spatial cohesion for the entire island and corridor. Although the circular HSR network consists of several HSR stations distributed relatively equally, the results show that counties contribute differently to the cohesion of the entire island due to the varied initial level of accessibility values. Moreover, the county-level analysis reveals that the internal changes of each county are also different with balancing, polarization, and neutral effects appearing. Therefore, the internal equity of counties needs to be combined with their external contributions to global equity. Our framework permits policymakers to make customized HSR transport policies at different planning levels, particularly for an isolated area.     

我的汽车缘(九) 上汽通用五菱——“中中外”合资成功的典范

<正>1997年底,在结束了与广汽的合作探讨后,年产量已接近10万辆的柳州微型车厂进入到了欧宝小组的视野。虽然通用对柳微的印象很好,却被告知柳微将被并入东风,无意合作。既然如此,"中中外"合资的典范——上汽通用五菱又将从何而来?合作又是如何从双方变为三方,最终实现共赢的呢?通用的中国低端市场战略1997年底,欧宝小组结束与广汽的合作探讨后,了解到柳州五菱的产量排行位列全国前十,善能便带领欧宝小组前往南宁,由广西自治区政府陪同到柳州参观     

Towed-Diver Surveys,a Method for Mesoscale Spatial Assessment of Benthic Reef Habitat: A Case Study at Midway Atoll in the Hawaiian Archipelago

An integrated method for benthic habitat assessment is described, in which divers maneuver boards equipped with digital video, temperature, and depth recorders while being towed behind a small boat. The tow path is concurrently recorded by a GPS receiver, and a layback model is applied to more accurately map the data. Percent cover of salient benthic categories is quantified by whole-image analysis of still frames sampled at 30-s intervals. The results of 15 towed-diver surveys at Midway Atoll in the Hawaiian Archipelago during a mass coral bleaching event are presented to exemplify the method and are compared to results derived from conventional methods. Towed-diver surveys bridge a gap between large-scale mapping efforts using satellite data and small-scale, roving diver assessments, providing a mesoscale spatial assessment of reef habitats. The spatial coverage of towed-diver surveys provides comprehensive data to managers concerning the extent, intensity, differential taxonomic response, and bathymetric correlates of bleaching.