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Multi-scale analysis on last millennium climate variations in Greenland by its ice core oxygen isotope
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作者 MingTong Yu zhenshan lin +1 位作者 JianLi Du ZhenZhen Zhang 《Research in Cold and Arid Regions》 2010年第2期123-128,共6页
关键词 empirical mode decomposition medieval warm period and little ice age quasi-period of millennium climate oscillation
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The Dynamics Mechanism of Vulnerability for Resource-based Enterprise Communities in China
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作者 Lichun Hou zhenshan lin +2 位作者 Ping Wang Fanyuan Zeng Chao Han 《Journal of Geographical Research》 2019年第4期22-29,共8页
This paper has analyzed the dynamics mechanism of resource enterprises community vulnerability,selected the key factor of resources to establish a nonlinear dynamical model.The model reveals the constrained relationsh... This paper has analyzed the dynamics mechanism of resource enterprises community vulnerability,selected the key factor of resources to establish a nonlinear dynamical model.The model reveals the constrained relationship between the number of vulnerable enterprises and resource shortage rate,and the same relationship between t vulnerable enterprise numbers and the owning rate of resource market by the biggest enterprise in resource-type enterprises community of China.The results showed that,the shortage rate of resources take up more percentage than the occupancy of resource rate of the strongest enterprises in Enterprise community when D>q.the characteristics and patterns of the Chinese enterprise evolution are as follows,(1)The strongest enterprises n1 will decline or transform in the enterprise community.(2)The enterprises which survived after the shortage of resources will go through three stages:①resistance stage;②recovery stage;③stable stage.We believe that there are three movements that can make sure the resource-based enterprises community keep growing continuously in the competitive market for resources,(1)understand the enterprise resources shortage rate and the strongest enterprises share in resource rate in enterprise community,(2)follow the even-odd symmetry or odd-even symmetry laws based on the familiarity of a resource economy,(3)put the enterprises in the suitable position. 展开更多
关键词 Resource-based enterprise community VULNERABILITY Large enterprise NONLINEAR DYNAMICS
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