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针对认知语言学研究领域中的语境理论在英语阅读理解中的作用,本文介绍了语境理论,着重分析了语境和阅读理解,探讨了语境理论在英语阅读教学中的实际应用。 相似文献
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In this study, we examine how the spatial distribution of housing supply impacts people’s residential choices and developers’ profitability. By optimally providing housing supply in a region, developers attempt to maximize their profits; on the other hand, if residents were given a chance to decide on housing supply, what patterns of housing supply they would prefer in order to maximize their consumer surpluses. This paper studies the interplay between these two perspectives. A nested multinomial-logit choice structure that encapsulates the bid-rent process is used to capture residents’ location and travel choices simultaneously, and the resultant rents at different locations. To investigate the optimal housing supply for these two stakeholders, we conduct sensitivity analyzes to explore the impact of different housing supply patterns on total rental profit and total consumer surplus. Specifically, analytical results are derived for a simple linear network with two residential locations and one destination under homogeneous and heterogeneous value(s) of time. The results of the sensitivity analyzes indicate that segregation of housing supplies at different locations for different income classes is, surprisingly, a “preferred” outcome by residents under consumer surplus maximization, whereas creating housing supply shortages at convenient locations is a natural outcome under housing profit maximization. These results provide insights on revealing the differences and tradeoffs in performance between these two different perspectives, and on where land use regulations may be needed to balance these two objectives. 相似文献
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城市轨道交通网络规划理论方法研究进展 总被引:9,自引:3,他引:6
在详细分析、总结国内外城市轨道交通规划领域的研究成果和存在问题的基础上,总结归纳了网络规划指导思想、规划原则、规划的要点、网络规模、网络优化、轨道项目的建设排序、客流预测理论和方法,指出我国城市轨道交通规划工作已经取得较大的进步和发展,对规划的特征和规律有深层认识,加强了定性定量的分析论证,使城市轨道交通网络规划的合理性日趋提高,但也存在许多有待进一步发展和完善之处。对我国城市轨道交通网络规划理论方法的发展提出了新建议。 相似文献
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运用概化理论(GT),采用5个单侧面交叉设计(OnefacetCrossedDesign),即:p×r,对全国海船船员动力装置操作评估5个评分要素测评精度进行了探讨。结果表明:该评估现行方案,即:固定5个评分要素,随机选用2名评分员,不能保障较好的评估精度(Φ=0.58)。建议将原评估方案中的评分员水平数增加至3名。进一步细化评分规范、加强对评分员的培训是控制评分误差的关键。 相似文献
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“十五”期间,铁道科学研究院基本建立了企业管理制度和运行机制,围绕提速、重载、安全、信息化、客运专线、青藏铁路建设等重点领域完成了大量的科技攻关和试验,并承担了铁路主要技术政策、技规、京沪高速铁路设计暂规等重要技术文件的编写,在机车车辆、信息工程、土木工程等领域成果转化取得突破。“十一五”期间,铁道科学研究院要按照“稳住一头、放开一片”的工作方针,提升行业服务和自主创新能力,加快科技成果转化,提高试验手段和装备水平,在人才队伍建设方面实施并完成“1350”建设工程,实现企业经营收入的快速增长。2006年是“十一五”开局之年,要对铁道科学研究院科研管理体系进行调整,主动围绕铁路跨越式发展要求开展科技攻关,围绕客运专线建设,做好系统集成和先进技术引进消化吸收等工作,完成铁道科学研究院“十一五”各项规划的编制,完善、加强财务及无形资产的管理以及经营状况分析,推进技术创新基地建设,形成规范化、规模化的技术成果转化能力。 相似文献
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蒋学模 《上海交通大学学报(哲学社会科学版)》2001,9(4):9-11
江泽民同志在建党八十周年大会上提出的“三个代表”,与邓小平同志在1992年提出的“三个有利于”都体现了历史唯物主义关于生产力、生产关系、上层建筑相互关系的基本原理,都是我国社会主义实践经验的总结,两者是一脉相承的。“三个代表”的需求,作为中国共产党的立党之本、执政之基、力量之源,在党建思想上把马克思列宁主义、毛泽东思想和邓小平理论发展到了一个新阶段。 相似文献
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船艏底部作为整船中的重要受力区域,船舶航行时,其与波浪会发生相对碰撞,即产生砰击现象,从而对船体的结构安全造成隐患。本文以某型半潜运输船为例,结合中国船级社(CCS)规范,根据Ochi-Mottor理论进行砰击压力极值计算,并采用有限元方法对该型船舶艏部区域的结构强度进行分析。 相似文献
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Due to globalization trends and the increasing competition between ports, the maritime policy for container shipments has witnessed a change in operations that resulted in less reliance on direct freight flows and higher transshipment operations. Motivated to investigate a soft intelligent decision-making approach using game theory in the context of servicing vessels during unloading operations in transshipment, we propose an epsilon bargaining approach between the carrier and the container terminal operator (CTO). The objective of the game is to maximize the carrier service level while minimizing operation costs for the CTO. The players' utilities, which depend on the service level and the fees for the carrier, as well as the revenues generated and the cost incurred for the CTO, are uniquely formulated and evaluated in a bargaining scenario using an ordinal ranking approach. The negotiation process is further improved between the two players based on our proposed Epsilon Bargaining Equilibrium, which to the best of our knowledge has not been used in maritime transportation problems. Results from a risk aversion case illustrate the value of the soft computing mathematical model that we formulated and motivate follow-up research. 相似文献
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介绍了目前对热带气旋发生及发展研究的最新理论及预报业务,指出目前热带气旋发生、发展的预报水平与实际需求仍有很大距离。推荐了美国为弥补热带气旋的发生、发展预报的不足而采取的对热带气旋的胚胎——热带扰动和热带低压进行监测的编号情况和方法。同时,根据几年来对上述情况的跟踪和分析,提供了几个较为实用的,可以及时了解全球热带扰动和热带低压最新发展动态的网站。所提供的理论动态和信息,可使船舶驾驶员和船舶安全管理人员了解目前国内外热带气旋发生、发展的研究和预报现状,在日常工作中及时了解热带气旋初生和发展的动态,最大程度地降低新生热带气旋对在热带气旋活动海区航行船舶的威胁,以达到保障航运企业安全生产的目的。 相似文献