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31.
研究了灰区间偏好的群体决策问题.在专家灰区间偏好群体意见集结过程中,常规的灰区间运算会产生决策信息的失真.为了避免这一缺陷,首先引入了灰区间调节参数的概念,通过建立求解调节参数的二次规划模型,确定专家灰区间判断的真值.建立了专家客观权重求解的二次规划模型,并给出了专家客观权重的最优解.此外,从另外一个角度同时考虑调节参数与客观权重,建立求解灰区间真值与专家客观权重的群体最优决策模型.气象敏感性行业专家群体评估决策的算例表明,决策策略是有效的.  相似文献   
32.
We can generate a net global GHG emission reduction from developing countries (in an UNFCCC term, non-Annex 1 Parties) without imposing targets on them, if we discount CERs generated from CDM projects. The CER discounting scheme means that a part or all of CDM credits, i.e., CERs, made by developing countries through unilateral CDM projects will be retired rather than sold to developed countries to increase their emissions. It is not feasible to impose certain forms of target (whether sectoral or intensity targets) on non-Annex 1 whose emission trend is hard to predict and whose industrial structure is undergoing a rapid change.

Instead of imposing targets (a command and control approach), we should apply market instruments in generating a net global emission reduction from non-Annex 1. Since April 2005 when the first unilateral CDM was approved by the CDM Executive Board, CDM has been functioning as a market mechanism to provide incentives for developing countries to initiate their own emission reduction projects. As CDM is the only market mechanism engaging developing countries in the Kyoto Protocol, we should try to re-design CDM so that it can generate net global emission reductions by introducing the idea of discounting CERs. But in order to produce meaningful GHG emission reductions by discounting CERs, the project scope of CDM has to be expanded by relaxing project additionality criteria while maintaining strict technical additionality criteria. Agreeing on the CERs Discounting Scheme will have a better political chance than agreeing on imposing emission reduction targets on developing countries.  相似文献   
33.
BOOK REVIEWS     
Books reviewed in this article: Aerial Photography and Remote Sensing. Terrain Analysis and Remote Sensing . JOHN R. G. TOWNSHEND , ed. Environmental Data Use in Computer-assisted Data Handling Systems: The Results of a Survey of Applications in the Pacific Northwest States . KENNETH E. GORDON . Applied Land Use: A Spatial Approach . JOHN F. LOUNSBURY , LAWRENCE M. SOMMERS , AND EDWARD A. FERNALD , eds. The Second Battle of New Orleans: A History of the Vieux Carre Riverfront-Expressway Controversy . RICHARD O. BAUMBACH , JR. AND WILLIAM E. BORAH . Cultural Environmental Archaeology . MYRA SHACKLEY . The Immoral landscape: Female Prostitution in Western Societies . RICHARD SYMANSKI . life Among the Poor in Cairo . UNNI WIKAN , translated by Ann Henning. Women, Work and Property in Northwest India . URSULA SHARMA . The Domestication of Women: Discrimination in Developing Societies . BARBARA ROGERS Economic Optimization in Locational and Transport Analysis . A. G. WILSON , J. D. COELHO , S. M. MACGILL , H. C. W. L. WILLIAMS . New Tools for Economic Development: The Enterprise Zone, Development Bank, and RFC . GEORGE STERNLIEB AND DAVID LISTOKIN , eds. Regional Wage Inflation . R. L. MARTIN , ed. Finding A Place For Energy-Siting Coal Conversion Facilities . FRANK J. CALZONETTI WITH MARK S. ECKERT . Environmental Management, Resources, and Systems Environmentalism. Second Edition . T. O'RIORDAN . Countryside Conservation . BRYN GREEN . Medical Spatial Diffusion: An Historical Geography of Epidemics in an Island Community . A. D. CLIFF , P. HAGGETT , J. K. ORD , AND G. R. VERSEY . Philosophy and Geographic Thought Order and Skepticism: Human Geography and the Dialectic of Science . RICHARD SZYMANSKI AND JOHN A. AGNEW . Measurement of Subjective Phenomena . D. F. JOHNSTON , ed. Conceptions of Space in Social Thought: A Geographic Perspective . ROBERT DAVID SACK . The Association of American Geographers: The First Seventy-five Years: 1904-1979 . PRESTON E. JAMES AND GEOFFREY J. MARTIN . The Life and Thought of Isaiah Bowman . GEOFFREY J. MARTIN . Physical River Basin Planning: Theory and Practice . SURANJIT K. SAHA AND CHRISTOPHER J. BARROW , eds. Soils and landforms: An Integration of Ceomorphology and Pedology . A. I. GERRARD Climatic Change and Society. Consequences of Increasing Atmospheric Carbon Dioxide . WILLIAM W. KELLOGG AND ROBERT SCHWARE . Political Political Redistrictings and Geographic Theory . RICHARD L. MORRILL . Population Studies in Spanish American Population History: Dell Plain Latin American Studies NO. 8 . DAVID J. ROBINSON , ed. Population Redistribution in the Midwest . CURTIS C. ROSEMAN , ANDREW J. SOFRANKO , AND JAMES D. WILLIAMS , eds. Geographical Perspectives on the Elderly . A. M. WARNES , ed. Regional Perspective On the American South . MERLE BLACK AND JOHN SHELTON REED , eds. The Prairies and Plains: Prospects for the 80s . JOHN R. ROGGE , ed. Rural Rural Settlement in an Urban World . MICHAEL BUNCE . Social Accident at Three Mile Island: The Human Dimensions . DAVID L. SILLS , C. P. WOLF , AND VIVIEN B. SHELANSKI , eds. The American Small Town: Twentieth-Century Place Images . JOHN JAKLE . Urban A House of My Own . SUSAN LOBO . The City: Patterns and Processes in the Urban Ecosystem . CHRISTOPHER H. EXLINE , GARY L. PETERS , AND ROBERT P. LARKIN . Movement in Cities . P. W. DANIELS AND A. M. WARNES . Urbanization and Urban Planning in Capitalist Society . MICHAEL DEAR AND ALLEN J. SCOT , eds.  相似文献   
34.
探讨了GIS技术在综合实践活动辅助教学中的应用,以中国地图为例,在讲授地图的基本知识后,让学生利用MapGIS软件动手制作一幅中国地图,并在此基础上引导学生进行简单的空间分析,锻炼学生的动手能力和空间分析思维,培养学生的信息素养、探究能力和创造精神。  相似文献   
35.
For more than a century, hand‐pulled rickshaws have been a prominent part of Calcutta's cityscape. Under the veil of modernization, progress, and globalization, however, the government of West Bengal State declared that rickshaws cause traffic congestion and constitute an exploitative use of human labor. Yet, despite the government‐imposed ban, rickshaws continue to ply the streets of central Calcutta. Based on interviews with rickshaw owners, operators, public officials, and local residents, we examine the cultural politics surrounding rickshaw pulling in Calcutta. This article shows that the rickshaw wallahs (pullers), who operate as part of the informal economy, provide an expansive range of services not limited to transportation. Indeed, the rickshaw wallahs form an integral part of Calcutta's social fabric, having made a place for themselves by facilitating social interaction and challenging hegemonic ideas and practices about who belongs where.  相似文献   
36.
Policy makers have now recognised the need to integrate thinking about climate change into all areas of public policy making. However, the discussion of ‘climate policy integration’ has tended to focus on mitigation decisions mostly taken at international and national levels. Clearly, there is also a more locally focused adaptation dimension to climate policy integration, which has not been adequately explored by academics or policy makers. Drawing on a case study of the UK, this paper adopts both a top-down and a bottom-up perspective to explore how far different sub-elements of policies within the agriculture, nature conservation and water sectors support or undermine potential adaptive responses. The top-down approach, which assumes that policies set explicit aims and objectives that are directly translated into action on the ground, combines a content analysis of policy documents with interviews with policy makers. The bottom-up approach recognises the importance of other actors in shaping policy implementation and involves interviews with actors in organisations within the three sectors. This paper reveals that neither approach offers a complete picture of the potentially enabling or constraining effects of different policies on future adaptive planning, but together they offer new perspectives on climate policy integration. These findings inform a discussion on how to implement climate policy integration, including auditing existing policies and ‘climate proofing’ new ones so they support rather than hinder adaptive planning.  相似文献   
37.
Mismatches between the spatial scales of human decision-making and natural processes contribute to environmental problems such as global warming and biodiversity losses. People damage the environment through local activities like clearing land or burning fossil fuels, but the damages only become manifest at larger regional or global scales where no one pays for them. Payments for ecological services like carbon sequestration can correct for these damages caused by scale mismatches. This paper presents a spatially explicit land-use model to investigate the consequences of scale mismatches for pollination and carbon storage services and examine the effect of payment for only carbon storage services. The model integrates processes in multiple spatial scales ranging from the parcel level used by landowners’ decision about deforestation, to the larger scale used by animals to pollinate plants, and finally to the global scale where carbon storage services are supplied. We show that payment for carbon storage services can become an effective mechanism to protect forests at the same time that it creates inequities among landowners in income level.These findings suggest that market-based approaches that focus on conservation of a single ecosystem service may reproduce unequal power relations among landowners.  相似文献   
38.
随着现代化教学手段在地理教学中的应用,传统的教学挂图可利用计算机作为辅助工具,制作成电子教学地图。本文论述了利用遥感数字图像制作电子教学地图的指导思想、必要性和可行性,并探讨了遥感数字影像教学地图的制作方法。  相似文献   
39.
浅谈挤密碎石桩的施工方法   总被引:1,自引:0,他引:1  
唐建忠 《海岸工程》2004,23(3):68-71
挤密碎石桩施工法是一种振动成桩法,即先用桩管振动成孔,然后填入足够数量的碎石,最后振动密实成桩体。通过振动、挤密的成桩过程,将原地基土振动夯实,桩体与桩间土形成复合地基,达到既处理可液化地基又增强地基的效果。介绍了挤密碎石柱的施工方法和质量检测方法。  相似文献   
40.
近年来,随着城镇化和旅游业的快速发展,加速了夏河县城市公共空间的更新建设,但也带来场所精神蜕变、识别性降低等一系列问题。在对夏河县进行社会调查、路网拓扑建模的基础上,采用模糊综合评价法、空间句法、核密度分析等方法对场所空间品质、空间活力进行系统地探析,进而对场所单元、丛拉商业文化场所等5处公共场所组团提出了具体的营建策略,并提出场所系统的营造应从构筑系统化的场所、坚持多组团多策略的营造原则、从多主体进行场所营造、营造高通达性的场所、以热点场所单元策动场所组团和场所系统的营造等视角出发营造一个高品质、高活力的场所系统。同时,期望能够为旅游型城市公共空间的场所营造提供一套可借鉴的公共空间评价方法和营造策略  相似文献   
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