银杏讲坛 第14期

时间：5月23日上午10:00

地点：图书馆一楼168报告厅

主讲人：Celso Grebogi

Abstract:

Evolutionary-game based models, in which the success of one species depends on the behaviour of the others, have become paradigmatic for addressing the fundamental problem of species coexistence in ecological systems. The generic properties of the competition can be characterized by the traditional rock-paper-scissors game in combination with spatial dispersal of static populations. I will, initially, consider a complex network, defined on a lattice or a population patch in which the interaction among the nodes changes the state of the nodes stochastically. The interaction can be competition, given by the rock-paper-scissors game, reproduction and intra-patch migration. On top of that, I will require that each node can be either infectious or susceptible, allowing for removal or death, in order to model epidemic spreading microscopically. I will then define a multi-layered network, formed by different sub-networks or population patches, thus in addition to intra-patch migration, I am creating an inter-patch migration. The interaction among the sub-networks is again stochastic. The interplay between intra- and inter-patch migration leads to self-organised waves in each sub-network in the absence of external control. It can also lead to the occurrence of synchronization and lag-synchronisation of patterns among different patches or sub-networks. This is relevant to the emergence of spatio-temporal order from disordered network states, resulting from migrations and stochastic interactions among the sub-networks.

EVOLUTIONARY GAME THEORY AND THE EMERGENCE OF SPATIO-TEMPORAL ORDER IN ECOLOGICAL SYSTEMS

主讲人简介：

Celso Grebogi，巴西科学院院士、第三世界科学院院士、美国物理学会会士、爱丁堡皇家学会会士、英国阿伯丁大学教授、英国阿伯丁大学复杂系统和生物数学研究中心主任，并担任了多个具国际影响力期刊的编委。他主要从事非线性动力学、混沌散射、混沌控制、吸引域突变、复杂网络等方面的工作。在1990年，他与Ott、Yorke发表关于混沌控制（OGY混沌控制）的论文被美国物理学会选为过去50年物理学的里程碑性工作。截止日前，他在Nature、Science、Phys. Rep.、Phys. Rev. Lett.、Phys. Rev. X等国际顶级期刊上发表科研学术论文320余篇，出版学术专著和综述260余册，百余次受邀在国际会议上做大会报告。他在学术谷歌中文章引用次数接近27,500次，H值75，单篇文章引用次数超过6000次，被列为引用频次最高的学者名单。他的研究成果曾被Nature News、Science News、Physorg、The Economist、Physics Today、New Scientist等多家学术媒体专题报道。

主办方：电子科技大学研究生院  电子科技大学研究生会