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11.
罗勇  黄仕高 《中南公路工程》2006,31(5):96-98,106
集对分析是处理不确定性问题的系统理论新方法。利用该方法以某路提出的4种膨胀土路堤填筑方法为研究对象,从系统工程的角度出发,以设计方案的技术、经济和环境影响等作为评价因子,对几种填筑方法做出较全面的分析比较。  相似文献   
12.
由经验丰富的项目管理团队来执行工程管理,能使项目管理目标最优,建设风险降低,责权利明细。以浙江富阳鹿山大桥作为工程案例,就工程项目成本风险、工期风险、质量风险、安全风险、环境风险的管理对策,进行经验总结,并指导工程实践。  相似文献   
13.
巷道堆垛机是自动化仓储系统实现货物自动存取的关键设备,通过对其平均单作业周期的计算可以得出单作业周期的等效货位,从而为自动化仓储系统的建设设计和高效管理提供依据。  相似文献   
14.
对淮海地区城市道路路基处治中的传统方法进行归纳,结合地质条件、土的物理参数及处治材料对处治原理进行理论分析。总结了管道开挖降低地下水位,掺灰、"闷灰",水泥土处治"夜潮砂",换填毛石、碎石、"山皮石"、废弃物等既经济又便于操作的浅层处理方案,提出了施工注意事项,并提供了大量的工程实例供参考。  相似文献   
15.
Business travel accounted in the UK in 2010 for 3% of trips and 10% of the UK’s domestic distance travelled (Department for Transport, 2011, p. 4). However, it is an under researched area, even though in major cities, where transport networks are most congested, it forms a higher proportion of trips. The paper presents the findings of a study of changing business travel practices and policies affecting the briefcase traveller. The findings are drawn from semi-structured interviews with key actors in stakeholder and private sector organisations based predominately in London and a survey of 150 business travellers. The study was designed to understand the motivations and attitudes towards reducing business travel and the compromises that needed to be made to balance reducing carbon emissions and cost, whilst maintaining or improving productivity and meeting the requirements of the business.The main findings show the approaches and implications of these approaches to reduce carbon emissions and costs, improve productivity and the impact of ICT. The findings show the importance of external reporting through the Carbon Reduction Commitment, the Carbon Disclosure Project and corporate responsibility reports as a motivator to develop new policies. The paper goes on to outline how some factors can be both barriers and motivations for change, such as customers insisting on meeting their suppliers face-to-face, but also requiring information on carbon emissions as part of the Carbon Disclosure Project. Individuals can also be both a barrier and a motivator to change. The role of existing travel and meeting habits and the view of some that travelling is a perk linked to status symbols have proved to be a hard barriers to overcome. However, a technically literate younger generation used to communicating virtually have challenged these practices.  相似文献   
16.
This paper presents a discussion on the relationship between organizational forms (including the ownership structure and the contractual practices) and passenger satisfaction of Chinese public transport service. To test this proposition, an original rich data set covering 4702 respondents and 58 public transport operators of 13 cities for the period 2013–2014 is used. We firstly estimate the passenger satisfaction based on customer satisfaction theory and PLS-SEM, and then take into consideration the mixed logit model to assess the effect between them. Conclusions drawn from the study are summarized as follows: ① The effect of organizational forms on the passenger satisfaction of public transport service is confirmed. ② Public transport services franchised to public ownership offer higher passenger satisfaction than those franchised to private ownership and mixed ownership. ③ Public transport services regulated by the management contracts incite more passenger satisfaction than those regulated by net cost contracts and gross cost contracts.  相似文献   
17.
Shellfish aquaculture can result in conflicts among stakeholders who perceive impacts and tradeoffs regarding sense of place, aesthetic, recreational, economic, and ecological values. Pacific geoduck clams (Panopea generosa Gould 1850) are grown in intertidal plots using gear- and labor-intensive techniques that result in a high value export product. A confluence of issues has resulted in on-going social and legal tensions surrounding geoduck aquaculture in southern Puget Sound, Washington (WA), USA. Using interviews and document analysis, we explored stakeholder perspectives and policy issues related to geoduck aquaculture in southern Puget Sound. Twenty-three stakeholders were interviewed, including state agency employees, representatives of the aquaculture industry, nongovernmental organizations, landowners, a tribal member, and an academic. Nine state hearings board decisions on challenges to aquaculture permits were also analyzed. Stakeholders articulated a variety of perspectives regarding aesthetic, recreational, land-use, ecological, political, regulatory, and economic aspects of geoduck aquaculture activities. Hearings board cases addressed similar issues (aesthetic, ecological, and recreational), as well as challenges to restrictions on aquaculture. Potential strategies for managing this conflict include emphasizing best management practices, identifying and incorporating best available science, joint fact-finding approaches, and initiating and improving communication among all stakeholders.  相似文献   
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