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文本知识分析中的概念层次网络方法 被引量:1
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作者 温有奎 《情报科学》 CSSCI 北大核心 2002年第3期259-261,292,共4页
文中提出了一种文本知识分析中的概念层次网络方法。该方法是一种文本概念分析的新思路。探讨了用面向对象技术与框架技术结合实现文本知识的抽象概念和具体概念的自动分析、知识组织。
关键词 文本知识分析 概念层次网络 智能信息检索 文本概念分析 自动分析 知识组织
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Conceptual Framework for Economic Evaluation of Globally Important Agricultural Heritage Systems (GIAHS): Case of Rice-Fish Co-Culture in China 被引量:4
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作者 Sonja BERWECK Parviz KOOHAFKAN +4 位作者 Mary Jane Ramos de la CRUZ 闵庆文 焦雯珺 孙业红 刘某承 《Journal of Resources and Ecology》 CSCD 2013年第3期202-211,共10页
The Globally Important Agricultural Heritage Systems (GIAHS) initiative was launched by the Food and Agriculture Organization (FAO) of the United Nations in 2002 with the aim of establishing the basis for the glob... The Globally Important Agricultural Heritage Systems (GIAHS) initiative was launched by the Food and Agriculture Organization (FAO) of the United Nations in 2002 with the aim of establishing the basis for the global recognition,dynamic conservation and adaptive management of outstanding traditional agricultural systems and their associated landscapes,biodiversity,knowledge systems and cultures.There is anecdotal evidence that designated GIAHS are economically better than non-GIAHS sites.However,there have not been done an economic analysis to prove this.Nor are any sophisticated economic performance criteria for GIAHS in place for a continuously monitoring of the functioning.Therefore,the main objective of this study is to conduct an economic valuation for a GIAHS system versus a similar non designated GIAHS system.For this,a Cost-Benefit Analysis (CBA) is chosen.The major constraint is the data availability.Therefore,a framework for economic analysis shall be developed with the intention to provide directions,assumptions,and data requirement to carry out an economic analysis and so give guidance on future inclusion of economic valuations of GIAHS.Theconceptual framework for economic assessment will use the Rice-Fish pilot site in China as a case study.The example calculations on the rice-fish co-culture (RFC) have to be taken cautiously due to data availability on different activities (tourism,marketed products on local and international markets) as well as comparison to similar systems. 展开更多
关键词 phenology Globally Important Agricultural Heritage Systems (GIAHS) Cost-Benefit Analysis (CBA) conceptual framework economic assessment Rice-Fish Co-Culture (RFC) China
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