崇义县红色旅游资源的保护与开发

崇义县有着丰富的红色旅游资源,该县红色旅游发展具有地理、生态等各方面优势,但交通、文物保护、基础设施等各方面也面临极大挑战.该县必须树立＂大旅游＂观念,利用当地优势,从红色旅游形式、宣传促销力度及人力资源等各方面入手,全面促进红色旅游资源的保护与开发.     

基于BIM市场产品现状的正向设计方案探索

基于国内外BIM市场产品的应用现状,从BIM基础理论、IFC交互标准、产品在不同阶段的运行速度、软件间的交互方式以及产品综合应用等方面出发,对现有的BIM软件进行综述、比较及选择。依附于京张高铁项目,参照已经出台的法律法规、IFC标准等,从设计的角度出发,提出铁路公共建筑正向设计的思路及方案,并在该项目中进行了应用。最后,对BIM技术给未来铁路公共建筑带来的深远影响进行论述。     

柴油-天然气双燃料重卡简介及市场前景分析

通过分析国内天然气行业现状和天然气重卡销售情况,认为目前发展柴油-天然气双燃料重卡更符合我国国情。该双燃料重卡突破纯天然气汽车续驶里程限制,不仅降低运营成本而且节能环保,在技术性能、二手车买卖、应用前景等方面更具市场推广价值。     

Percolation phenomenon in connected vehicle network through a multi-agent approach: Mobility benefits and market penetration

This paper presents an integrated multi-agent approach, coupled with percolation theory and network science, to measure the mobility impacts (i.e., mean travel time of the system) of connected vehicle (CVtio) network at varying levels of market penetration rate. We capture the characteristics of a CV network, i.e., node degree distribution, vehicular clustering, and giant component size to verify the existence of percolation phenomenon, and further connect the emergence of mobility benefits to the percolation phase transition in the CV network. We show the percolation phase transition properties to appear in a dynamic CV network with time-correlated link and node dynamics. An analytical framework was developed to evaluate the CV network attributes with varying market penetrations (MP) and connection ranges (CR) to identify percolation phenomenon in a mixed CV and Non-CV environment. In addition, a multi-agent CV simulation platform was created to further measure (1) how varying MPs and CRs affect the network-wide mobility measured by the mean travel time of the network; and (2) when percolation transition occurs in CV network to capture the critical MP and CR. Percolation phenomenon in CV network was further validated with the analytical assessments. The results show that (1) percolation phase transition phenomenon is a function of both market penetration and communication range; (2) percolation phase transitions in both mobility and CV network are highly correlated; (3) the application can reduce the average travel time of the system by up to 20% with reasonable market penetration and communication range; (4) critical market penetration is sensitive to communication range, and vice versa; (5) at least 70% of the CVs on the network are required to show in the same cluster for mobility benefits to appear; and (6) for high levels of MP or CR, a low probability of connectivity (PC) does not dramatically change the mean travel time. These results provide solid supports to create evidence-driven frameworks to guide future CV deployment and CV network analysis.     

Low carbon maritime transport: How speed,size and slenderness amounts to substantial capital energy substitution

Three responses that reduce energy consumption and CO₂ emissions in maritime transport are slower speeds, larger vessels and slender hull designs. We use crude oil carriers as our illustrative example; these represent nearly a quarter of international sea cargo movements. We estimate the potential and costs in these which can all be described as capital substituting for energy and emissions. At different degrees of flexibility and time scales: speed reductions are feasible immediately when there are vessels available, though more capital will be tied up in cargo. Deployment of larger and more slender vessels to a greater extent requires fleet renovation, and also investments in ports and infrastructure. A novel finding in our analysis is that if bunker costs rise as a result of emission costs (fees, quotas), then this may depress speeds and emissions more than if they result from higher oil prices. The reason is that for higher oil prices, more capital tied up in cargo may give cargo owners an interest in speeding up, partly counteracting the impulse from fuel costs that tends to slow vessels down. Emission costs, in contrast, do not raise cargo values.     

How might potential future plug-in electric vehicle buyers differ from current “Pioneer” owners?

The entry of various plug-in electric vehicles (PEVs) into the passenger vehicle sector provides novel opportunities to learn about the potential for future PEV markets. However, early PEV buyers (or “Pioneers”) can substantially differ from present conventional vehicle owners that have interest in purchasing PEVs in the future (or the “Potential Early Mainstream buyers”). To compare the characteristics, preferences, and motivations of Pioneers and Potential Early Mainstream buyers, we draw data from the Canadian Plug-in Electric Vehicle Study, a three-part mixed-mode survey with samples of PEV owners (n = 94) and conventional new vehicle buyers (n = 1754). We identify several significant differences in household characteristics, including income, education, and recharge access. In terms of preferences, Pioneers express extremely high valuation of PEVs and prefer pure battery electric vehicle (BEV) designs over plug-in hybrid electric (PHEV) designs. In contrast, Potential Early Mainstream respondents prefer PHEVs. Both Pioneer and Potential Early Mainstream respondents are similarly cautious about controlled charging programs, but Pioneers place five times as much value on using electricity generated from renewable sources than the Potential Early Mainstream. Pioneers also tend to have different motivations, including significantly higher levels of environmental concern, and higher engagement in environment- and technology-oriented lifestyles. Policymakers, automakers, and electric utilities that anticipate a transition to electric mobility ought to consider how potential future PEV buyers may differ in their vehicle preferences, usage and motivations relative to current PEV owners.     

2009年我国汽油机产品市场分析及2010年市场展望

2009年汽车下乡、1．6L及以下乘用车购置税减半等一系列优惠政策使汽车产销量呈井喷式增长，汽车用汽油机产销亦同步增长。文章分析了2009年国内主要汽车公司汽油机产销状况、产品结构及市场特点，对今后国内汽车发动机的发展提出了建议。文章对2009年全年的汽车及汽油机产量进行了分析，对大家关心的2010年的国内汽油机市场进行了展望。     

积极开展市场营销促进港口快速发展

从港口业的特点出发,结合市场营销理论,分析了港口市场营销过程中的4P因素,论述了港口开展市场营销的必要性以及目前存在的主要问题,最后从产品、价格、渠道和促销四个方面提出了港口开展市场营销的策略。     

网通企业市场营销策略

通信全球化与国际竞争的新趋势,给我国网通企业带来了前所未有的压力与挑战,根据我国网通企业行业特点与营销重点,提出全员营销、摒弃传统广告宣传方式、营建全新企业文化及拓宽范围,实行差别化经营等策略。     

2005年上半年国内SUV市场及未来发展趋势分析

与2004年同期相比，2005年上半年的国内SUV市场仍表现为下降，但是下降的速度在逐渐放缓。SUV市场发展呈现出一些新特点，在政策环境和市场需求等因素的影响下，未来国内SUV呈现低油耗、高档化、城市化及柴油化的发展趋势。