区域综合防灾系统动态演变的信息动力学模型及模拟

来源期刊:中南大学学报(自然科学版)2015年第3期

论文作者:刘朝峰 苏经宇 王威 左翔君

文章页码:933 - 941

关键词:综合防灾;演化;序参量;信息动力学;最大流原理;自组织特征映射网络;调控

Key words:comprehensive disaster prevention; evolution; order parameter; information dynamics; maximum flow principle; self-organizing feature map network; regulation

摘    要:区域综合防灾系统是一个开放的、极其复杂的巨系统,组元之间的复杂非线性作用促使它不断发展和演化,其发展演化遵循广义信息熵原理。从区域综合防灾系统的宏观结构和信息视角出发,将区域综合防灾系统看作一个信息体及信息过程,引入最大信息熵和最大流原理建立描述和控制区域综合防灾系统演化的动力模型,并结合自组织特征映射网络算实现该模型的数值仿真模拟,该模型揭示出区域综合防灾系统的结构模式形成和演化发展的动力学规律。运用该模型对2002—2008年南通市抗震防灾综合防御系统发展进行数值模拟和网络模式分析,结果表明:系统模式参数ξ由0.06逐年上升到4.19,序参量连接权值趋于合理,使得系统结构稳定均衡,从而验证该模型的可行性和合理性,为区域综合防灾系统的演化评价、预测和调控提供一种全新的思路。

Abstract: Regional comprehensive disaster prevention system is an open, extremely complex giant system. Continuous development and evolution of the complex system was prompted by complex nonlinear interaction between the groups. Its evolution followed the generalized entropy principle. From the macro-structure of regional integrated disaster prevention system and information perspective, regional comprehensive disaster prevention system was regarded as a real and information process. By introducing the maximum entropy and maximum flow principle, the information dynamics model for evolution of the regional integrated disaster prevention system was established to describe and control its evolution, and the numerical simulation of the model was achieved in combination with self-organizing feature map network. The model reveals the laws of dynamics on the formation and evolution of the structure pattern of regional comprehensive disaster prevention system. The integrated earthquake disaster prevention system of Nantong city during 2002-2008 was studied as a typical example for numerical simulation and network structure analysis. The results show that the system structure ξ increases from 0.06 to 4.19 year by year, and the connection weights are rationalized. The system structure is stable equilibrium. Then the feasibility and rationality of the model is verified. It provides a new way of thinking for assessment, prediction and regulation of the evolution of the regional disaster prevention system.

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