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21.
区域水资源与社会经济协调程度评价研究   总被引:8,自引:1,他引:8  
基于陈守煜多级多目标模糊模式识别模型,提出了区域水资源与社会经济协调程度评价模型。该模型利用级别特征值解决了多层多级多目标系统区域水资源与社会经济协调程度的评价,给出了多个目标隶属函数的计算公式。经分析比较,方法可行,结果合理。  相似文献   
22.
Geography is again becoming an integral part of the premier natural‐science agency of the federal government. Geographic research emphasizes the surface of the earth, a portion of the earth system that the U.S. Geological Survey (USGS) defines as the “critical zone.” Although geography was part of the USGS from the creation of the agency, in recent years geography in the agency has largely been limited to topographic mapping. Recently, the USGS and an advisory committee of the National Research Council (NRC) reviewed the role of geography at the Survey. The committee's report, along with ongoing decision‐making in the federal government, is likely to reshape geography in the USGS. The newly defined USGS has a regional structure and four disciplines: geology, hydrology, biology, and geography. The NRC report emphasizes the need for the creation of a spatial database called the National Map to replace the existing series of paper topographic maps. The report also outlines the need for geographic research in geographic information science (GIScience), nature‐society connections, and bridging of science to decision‐making. The NRC report has been briefed throughout the USGS, in the federal executive branch, and in Congress. The changing role for geography in the USGS requires change in the agency culture, revised budgetary decisions, and the establishment of a long‐term core agenda for research. Academic geographers will need to prepare a new generation of geographers for participation in the USGS and similar agencies.  相似文献   
23.
随着我国机构改革的不断深入和社会主义市场经济体制的逐步建立和完善,地震学会同其他社会团体一样将成为现代社会的支柱之一。以山西省地震学会目前的工作现状为例,指出学会在管理体制、运行机制和活动方式等方面存在的问题,提出了发展思路及建议。  相似文献   
24.
In this paper, the results of a survey conducted in the Cukurova region of Turkey are presented. The aim of this research is to identify groups of farmers who differ in their risk sources and risk management strategies. The respondents to the survey were divided into three risk attitude groups, risk averse, risk seeking and risk neutral. Factor analysis has been conducted on information obtained from 112 farmers in 2000. From the findings of the research, risk sources were labelled as environmental, price, catastrophe, input costs, production and technological, political, finance, personal, marketing, health and social security. The dimensions of risk strategies were named as diversification, off-farm income, marketing, planning, financing and security.  相似文献   
25.
A size classification for debris flows   总被引:4,自引:0,他引:4  
Matthias Jakob   《Engineering Geology》2005,79(3-4):151-161
A 10-fold classification for debris flow size is proposed based on total volume, peak discharge and area inundated by debris. Size classes can be used for regional overview studies where detailed site investigations are either unnecessary, too costly or where the highest hazard and risk creeks need to be identified for further study. They are also useful to compare the regional impact between affected areas and the effects of rainstorms, and they allow lay-people to obtain an understanding of debris flow magnitude and consequences. Finally, different size classes allow the estimation of travel times to points of interest based on empirically derived equations. It is proposed that agencies concerned with debris flows should establish a documentation of debris flow size according to this classification, which serves as a data base for hazard and risk planning.  相似文献   
26.
IPCC reports provide a synthesis of the state of the science in order to inform the international policy process. This task is made difficult by the presence of deep uncertainty in the climate problem that results from long time scales and complexity. This paper focuses on how deep uncertainty can be effectively communicated. We argue that existing schemes do an inadequate job of communicating deep uncertainty and propose a simple approach that distinguishes between various levels of subjective understanding in a systematic manner. We illustrate our approach with two examples. To cite this article: M. Kandlikar et al., C. R. Geoscience 337 (2005).  相似文献   
27.
28.
Over the past decade, major landscape wildfires (or ‘bushfires’ in Australia) in fire-prone countries have illustrated the seriousness of this global environmental problem. This natural hazard presents a complex mesh of dynamic factors for those seeking to reduce or manage its costs, as ignitions, hazard behaviour, and the reactions of different human and ecological communities during and after hazard events are all extremely uncertain. But while those at risk of wildfire have been subject to significant research, the social dimensions of its management, including the role of science, have received little attention. This paper reports on a case study of the Barwon-Otway area of Victoria in Australia, a high wildfire risk area that has recently been a pilot site for a new risk mitigation strategy utilising the wildfire simulation model PHOENIX RapidFire. Against simple equations between ‘more science’ and ‘less uncertainty,’ this paper presents results from interviews and a workshop with practitioners to investigate how scientific research interacts with and informs both wildfire policy and practice. We suggest that attending to cultural and social specificities of the application of any technical innovation—such as next generation modelling—raises questions for future research about the roles of narrative, performance, and other knowledges in the sedimentation of science.  相似文献   
29.
胡永达 《地质论评》2016,62(S1):103-104
重要矿产资源尤其是战略性矿产的安全保障历来是世界各国关注的重点之一。关于战略性矿产的研究,欧美等发达国家和地区已经建立了一套比较成熟的理论和方法,并不定期更新战略性矿产目录。而我国对于战略性矿产的研究相对较晚,尚未形成统一的内涵意义、评价体系和方法。为此,本文在重新界定战略性矿产内涵基础上构建供应风险-经济价值二维评价体系,运用定性和定量相结合的评价方法综合评价我国主要矿产资源的战略性。  相似文献   
30.
以二连浩特市人水关系为研究对象,从取水总量和谐度、用水效率和谐度、水生态环境保护和谐度三个方面构建了二连浩特市水资源与经济社会和谐度评价体系。从评价结果可以看出,二连浩特市开展节水型社会建设以来,水资源与经济社会和谐度发生了较显著的改善。评价体系较好地反映了二连浩特市水资源与经济社会和谐度,对北方干旱缺水地区节水型社会建设具有借鉴意义。  相似文献   
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