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41.
基于网络分析的区域铁路公司建构方法与实证 总被引:1,自引:0,他引:1
区域铁路公司是铁路运输市场组织的重要模式之一, 也是铁路改革中的焦点问题之一。 基于经济地理学功能区(结节区)的网络分析方法, 对1991~2005年我国城际铁路货流的空 间组织特征进行了系统分析, 发现我国铁路货物运输联系形成了较为稳定的功能区划, 形成 北京、广州、上海等城市枢纽节点。基于合理运输组织和减少交易成本的组织理念, 提出建 立东北、华北、西北、华中、华东、中南和西南7大区域铁路公司。该研究可以为铁路市场 化改革提供决策支持。 相似文献
42.
A three-tiered approach to participatory vulnerability assessment in the Solomon Islands 总被引:1,自引:0,他引:1
Ioan Fazey Mike Kesby Anna Evely Ian Latham Daniel Wagatora Jude-Edward Hagasua Mark S. Reed Mike Christie 《Global Environmental Change》2010,20(4):713-728
Greater recognition of the seriousness of global environmental change has led to an increase in research that assesses the vulnerability of households, communities and regions to changing environmental or economic conditions. So far, however, there has been relatively little attention given to how assessments can be conducted in ways that help build capacity for local communities to understand and find their own solutions to their problems. This paper reports on an approach that was designed and used to work with a local grass roots organization in the Solomon Islands to promote inclusivity and participation in decision-making and to build the capacity of the organization to reduce the vulnerability of communities to drivers of change. The process involved working collaboratively with the organization and training its members to conduct vulnerability assessments with communities using participatory and deliberative methods. To make best use of the learning opportunities provided by the research process, specific periods for formal reflection were incorporated for the three key stakeholders involved: the primary researchers; research assistants; and community members. Overall, the approach: (1) promoted learning about the current situation in Kahua and encouraged deeper analysis of problems; (2) built capacity for communities to manage the challenges they were facing; and (3) fostered local ownership and responsibility for problems and set precedents for future participation in decision-making. While the local organization and the communities it serves still face significant challenges, the research approach set the scene for greater local participation and effort to maintain and enhance livelihoods and wellbeing. The outcomes highlight the need for greater emphasis on embedding participatory approaches in vulnerability assessments for communities to benefit fully from the process. 相似文献
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Fifty years of organisational change in container shipping: regional shift and the role of family firms 总被引:1,自引:0,他引:1
Spectacular growth has marked the industry initiated by Malcolm McLean with the sailing of the Ideal-X in 1956. While the growth of container shipping has been typically seen in terms of technological advances, increasing vessel
capacity, traffic growth, financial performance and competitiveness, it has been shaped also by organisational transformations.
This paper provides an overview of the major companies that make up the container shipping industry, tracing the rapid adoption
of containerisation by American carriers to its diffusion to Europe and then Asia. While several carriers belong to business
conglomerates, the most dynamic in recent years have been those that are those that possess a family structure. About 12 of
the present top 20 carriers are largely family controlled, including 4 out of the top 5. Unlike other capital intensive industries,
where the power has shifted towards corporate governance, the container shipping industry retains a strong individualistic
entrepreneurial character. At a time when North American ownership in container shipping is no more, the spirit of innovation
began 50 years ago by an American visionary is still evident in the entrepreneurial dynamism of many of the industry leaders. 相似文献
44.
针对现有的商业地理信息系统平台难以灵活整合多源影像数据融合使用的问题,深入研究Cesium平台下多种数据源的空间参考差异和瓦片组织规则,针对不同空间参考的瓦片数据源进行混搭设计,提出基于Cesium的多源本地瓦片数据静态和动态加载方案。实验结果表明,单一瓦片数据源加载方案、静态和动态多源瓦片混搭方案的展示效果较好;静态瓦片混搭方案在加载不同空间参考瓦片数据时容易造成变形;动态多源、多空间参考瓦片混搭方案能有效克服变形问题且展示效果佳。本文实现了在开源GIS平台下的多源影像数据的融合使用,为地理信息系统与遥感类项目应用提供了一个低成本、高灵活性的解决方案,具有较为明显的实际应用价值。 相似文献
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目前第四次全国中药资源普查试点工作采集了大量的成果数据,并且成果数据与地理空间位置之间存在天然的联系。本文以中药资源数据的空间属性作为出发点,在中药资源普查成果数据和已有地理国情监测数据的基础上,建立了基础地理数据库、专题地理数据库和中药资源数据库,设计并实现了能够进行中药资源专题分析计算的地理工具集。最后,基于B/S架构完成了中药资源地理国情监测技术平台的构建,验证了地理工具集设计思路的正确性。 相似文献
47.
杨少愚 《测绘与空间地理信息》2017,(4)
测绘监理与测绘行业质量监督不同,测绘监理注重生产的全过程,控制测绘生产过程中各个工序的质量,从而保障最终测绘成果的质量;测绘行业质量监督则是代表政府行使对测绘项目进行监督的行为。因此,两者在工作范围、工作性质以及工作深度等方面存在差别。但是两者同时又有统一的关系,也就是都为保障测绘成果质量,更好地服务保障经济社会发展采取的保障措施。现今在国内已有很多项目引入了监理机制,但尚没有形成一套完善有效的测绘监理行业规范。笔者根据多年在广东、海南、新疆等地区从事监理工作的实际经验,结合工程监理中的部分内容和方法,总结出了一套较为完善有效的测绘工程监理方案。 相似文献
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Jeffrey T. Morisette Amanda E. Cravens Brian W. Miller Marian Talbert Colin Talbert Catherine Jarnevich 《社会与自然资源》2017,30(9):1158-1167
There is substantial literature on the importance of bridging across disciplinary and science–management boundaries. One of the ways commonly suggested to cross boundaries is for participants from both sides of the boundary to jointly produce information (i.e., knowledge co-production). But simply providing tools or bringing people together in the same room is not sufficient. Here we present a case study documenting the mechanisms by which managers and scientists collaborated to incorporate climate change projections into Colorado’s State Wildlife Action Plan. A critical component of the project was the use of a collaborative modeling and visualization workspace: the U.S. Geological Survey’s Resource for Advanced Modeling (RAM). Using video analysis and pre/post surveys from this case study, we examine how the RAM facilitated cognitive and social processes that co-produced a more salient and credible end product. This case provides practical suggestions to scientists and practitioners who want to implement actionable science. 相似文献