文化传播模型中的非平衡相变  

Non-equilibrium Phase Transition in Cultural Communication Model

作　　者：姜罗罗[1] 陈婷[1] 应崇杨[1] 

机构地区：[1]宁波大学理学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2007年第1期73-77,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(10575055).

摘　　要：采用Monte Carlo数值模拟的方法研究了社会体系中文化突变对文化传播的作用.文化突变机制的引入,使得文化传播模型展示出丰富的相变行为.随着文化突变参量的变化,在一定条件下,体系出现从无序到有序和从有序到无序的相变.在相变点的邻域内,文化畴大小的概率分布函数p(s)与文化畴大小s成幂指数关系,p(s)～sτ.此外,通过引入系统平均学习概率,研究了文化的突变机制和学习机制的联系.研究表明,个体文化突变可以增加整个体系文化交流的机会.With Monte Carlo simulation method, this paper investigates the effects of prompt variation in culture on cultural out-reach in social systems. With the introduction of cultural variation mechanism, the cultural out-reach model shows abundant phase transitions. Along with the parameter changes in cultural variation, under certain conditions, the system experiences phase transitions from in-order to dis-order and vice versa. In the field around the transition point, the size of cultural domains distributes in a power-law p（s） ～ s^-r. Besides, by means of introducing average imitating pair, the relation between cultural variation mechanism and cultural imitation mechanism is studied. The research indicates that individual cultural variation enhances the opportunity for overall cultural communication system.

关 键 词：MONTE Carlo数值模拟 非平衡相变 Axelrod模型 文化突变 

分 类 号：O414.22[理学—理论物理] C912.68[理学—物理]