In this paper,plant niche breadth and niche overlap were analyzed on oasis-desert ecotone in Fukang of Xinjiang,with 7 measurements.The results reveal that:the methods for measuring niche breadth such as Simpson,Shann...In this paper,plant niche breadth and niche overlap were analyzed on oasis-desert ecotone in Fukang of Xinjiang,with 7 measurements.The results reveal that:the methods for measuring niche breadth such as Simpson,Shannon Wiener and Levins formula were all fit to plants on oasis desert ecotone,while Simpson,Shannon Wiener were better than Levins; niche overlap formula of Levins,Wang gang,Pianka were all suitable to reflect niche structure,But Wang-gang’s method was more rational than the others.The minimal spanning tree and polar ordination proved it fully.展开更多
Strategic alliance is the most critical organizational form of enterprise strategy emerged during these years,as well as one of hottest topics in the field of management theory.This article discusses the problems of m...Strategic alliance is the most critical organizational form of enterprise strategy emerged during these years,as well as one of hottest topics in the field of management theory.This article discusses the problems of mutual trust among members of strategic alliance in the course of organizing and operating the alliance.After analyzing the definition,functions and its forms,the article has proposed several measurements set up for the mutual trust within strategic alliance.展开更多
文摘In this paper,plant niche breadth and niche overlap were analyzed on oasis-desert ecotone in Fukang of Xinjiang,with 7 measurements.The results reveal that:the methods for measuring niche breadth such as Simpson,Shannon Wiener and Levins formula were all fit to plants on oasis desert ecotone,while Simpson,Shannon Wiener were better than Levins; niche overlap formula of Levins,Wang gang,Pianka were all suitable to reflect niche structure,But Wang-gang’s method was more rational than the others.The minimal spanning tree and polar ordination proved it fully.
文摘Strategic alliance is the most critical organizational form of enterprise strategy emerged during these years,as well as one of hottest topics in the field of management theory.This article discusses the problems of mutual trust among members of strategic alliance in the course of organizing and operating the alliance.After analyzing the definition,functions and its forms,the article has proposed several measurements set up for the mutual trust within strategic alliance.
