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根据水资源安全评价指标确立的原则,建立全面合理的水资源安全评价指标体系。在面板数据分析领域下,提出基于中心点三角白化权函数的水资源安全灰色评估模型,根据白化权函数值离差最大化原理改进指标权重的确定方法,并利用灰色聚类时间系数来表征面板数据的时间维度,反映水资源安全评价的时间特征和评价指标的重要程度。结合青海省8个行政分区的水资源安全评价结果,验证了该模型合理、可行。 相似文献
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为实现羊绒产品全过程的绿色供应链管理,有必要对羊绒纺织业制造供应链的绿色化程度进行评价.通过对羊绒纺织业制造供应链各阶段对环境的影响及绿色化途径的分析,针对供应链不同阶段的特点开发了基于实现绿色化的手段和绿色化可能实现的环境绩效的羊绒纺织业制造供应链绿色化评价指标体系.根据指标的特点设计了基于三角白化权函数的灰色聚类评估模型的对羊绒纺织业制造供应链整体绿色化程度评价模型,同时基于系统协同度模型设计了评价羊绒纺织业制造供应链各阶段绿色化协同程度的评价方法.特定评价指标的开发与协同度评价的提出有助于提高供应链绿色化评价的准确性并可以为绿色供应链管理决策提供更丰富的信息支持. 相似文献
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期刊全文数据库专业相关性判断的灰色聚类模型 总被引：1，自引：0，他引：1
灰色聚类决策就是按多个不同的决策指标对决策对象进行综合评价,确定决策对象是否满足给定的取舍原则.通过建立在特定的白化权函数基础上的灰类决策,以医学专业为实例,对期刊全文数据库的专业相关性进行判断,为专业图书馆期刊全文数据库的购置投资提供了定量的依据. 相似文献
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马弘 《内蒙古科技与经济》2019,(6)
从阅读推广项目策划者视角出发设计评估指标,采用灰色聚类评估方法,对阅读推广项目进行量化评估。根据灰类系数的大小确定评估等级,结合白化权函数的取值分析影响评估结果的因素,灰色聚类评估方法对阅读推广项目的评估具有一定的可操作性及可借鉴性。此方法在阅读推广项目评估中的有效运用,对于提高阅读推广项目的自身竞争力和促进全民阅读的发展具有重要意义。 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献
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《中国科学院院刊(英文版)》2014,(3):212-213
<正>In February 2014,the 30th Chinese Antarctic inland expedition team reported that they have successfully conducted the seeing measurement at the Antarctic Taishan Station using a Differential Image Motion Monitor(DIMM)developed by the Nanjing Institute of Astronomical Optic and Technology(NIAOT),Chinese Academy of Sciences.In astronomy,seeing is a physical parameter that describes the irregular movement and blur of the star 相似文献
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XIN Ling 《中国科学院院刊(英文版)》2014,(4):270-271
Amassive overhaul is coming to the Chinese Academy of Sciences （CAS）. To straighten its ＂fragmented, inefficient research＂, the academy has decided to restructure its 104 institutes for better teamwork. 相似文献
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SONG Jianlan 《中国科学院院刊(英文版)》2014,(4)
<正>DNA demethylation in mammalian zygotes,a biochemical process through which the parental genomes let go the epigenetic marks from their"past lives"to obtain totipotency,has long fascinated biologists:how does it happen?A joint team at the CAS Shanghai Institutes for Biological Sciences tells a surprising story. 相似文献
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China is one of the fastest growing economies worldwide. Are science and research also in the fast lane? We talked with LUO Yuan, scientist at the Institute of Coal Chemistry in Shanxi, and Axel Mosig, Professor at Ruhr University in Bochum, who has first-hand experience working and living in China. 相似文献
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Joachim Trümper 《中国科学院院刊(英文版)》2014,(2):201-201
<正>"In 1979 two Chinese scientists joined our institute in the framework of the historical CAS-MPG agreement.This marked the beginning of a longstanding fruitful collaboration.Many visitors followed and contributed to our scientific programs.–My first visit to China took place in 1981–with stays at CAS institutes in Bejing,Nanjing,Shanghai and Kunming,where I received unforgettable impressions of 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>May 15,2014Publicly funded scientific research is an important means for the society to create knowledge,support innovation,and promote growth.Research articles from such research are knowledge resources to be shared by all.Their open access will facilitate the dissemination and utilization of knowledge,turn the knowledge produced by public investment effectively into innovation and development capabilities of the society,ensure that public knowledge benefi ts all,and strengthen the innovation driven development strategy.Therefore,Chinese Academy of Sciences(CAS)issues at the present stage the following open access policy for articles from publicly funded scientifi c research projects:CAS requires its researchers and graduate students to 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>Between February and March of 2013,the source of avian-origin H7N9 human infection was discovered in Shanghai and Anhui,China.Prior to this,H7N9 has only exhibited characteristics of a low pathogenic avian infl uenza virus,carried by chickens with no known cross-species transmission.By the end of August 2013,Chinese mainland reported a total of 134 confi rmed cases of H7N9 human infections across12 provinces and 42 cities,resulting in 45 deaths.In October and November,Zhejiang Province found three new cases and Guangdong found one case of human infection,suggesting the possibility of a comeback in the fall and winter seasons.Researchers led by Prof.GAO Fu(George Fu Gao)at the Institute of Microbiology,CAS and Beijing Institutes of Life Science,have made progress on understanding 相似文献