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Wetland as well as the forests and oceans are listed as the world's three ecosystem type. Wetland is a unique ecosystem formed by the interaction between water and land resources, is rich in wildlife resources. At the same time, the wetlands have the production function and environment purification function, and it can provide food, meat, energy, tourism resources and improve the environment pollution,...
Based on correlation of the stock price fluctuation of the information services stock network in Shanghai A-share and Shenzhen A-share, this paper established a stock network according to the given weight of the company's relative value. Then it proposes a comprehensive directed weighted evolving network model that integrated fitness-based preferential attachment, node deletion, link establishment...
In the context of endogenous network formation, we study strategic interaction among players within k-neighborhood. Based on the myopic best response rule, players choose action and establish links with other players by unilaterally investing in costly pair wise links in the evolution of networks. First, we characterize the equilibrium networks and describe the impact of the link cost on the equilibrium...
Based on the comprehensive evolving model of trade network, this paper introduces the parameters of evolving mechanism for the industrial cluster network, which are got from the investigation of information industrial cluster in Xi'an, then simulates the real evolving model of trade network and discusses the evolving results of the network characteristics. The four conclusions are as follows: (1)...
This paper uses linear prediction model, the natural growth model and the exponential growth model to fitted Wuhan population quantity from 1978 to 2004, and then according to the determine corresponding parameters, predicted the population quantity from 2005 to 2007 and compared, the conclusion is that the results of natural growth model and the exponential growth model are better.
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