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Balancing the competing demands of harvesting and safety from predation: Lévy walk searches outperform composite Brownian walk searches but only when foraging under the risk of pre...

Reynolds, A.M. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4740-4746

Some foragers have movement patterns that can be approximated by Lévy walks whilst others may be better represented as composite Brownian walks. Many attempts have been made to interpret these movement patterns in terms of optimal searching strategies for the location of randomly and sparsely...

Persistent link: https://www.econbiz.de/10010872979

Economic dynamics with financial fragility and mean-field interaction: A model

Di Guilmi, C.; Gallegati, M.; Landini, S. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 15, pp. 3852-3861

Following Aoki’s statistical mechanics methodology [Masanao Aoki, New Approaches to Macroeconomic Modeling, Cambridge University Press, 1996; Masanao Aoki, Modeling Aggregate Behaviour and Fluctuations in Economics, Cambridge University Press, 2002; Masanao Aoki, and Hiroshi Yoshikawa, Reconstructing...

Persistent link: https://www.econbiz.de/10010873209

On synchronizability and heterogeneity in unweighted networks

Hao, Binbin; Yu, Hao; Jing, Yuanwei; Zhang, Siying - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 9, pp. 1939-1945

density and heterogeneity in degree distribution. In this work, it will be shown that synchronizability of Type I networks is … independent of heterogeneity in the degree distribution when the link density is smaller than 0.02. Synchronizability and link … density are proportional. When the link density is larger than 0.025, heterogeneity decides the curve slope. The …

Persistent link: https://www.econbiz.de/10010873403

Promotion of cooperation induced by the interplay between structure and game dynamics

Fu, Feng; Chen, Xiaojie; Liu, Lianghuan; Wang, Long - In: Physica A: Statistical Mechanics and its Applications 383 (2007) 2, pp. 651-659

heterogeneity and disassortative mixing pattern. For a given average connectivity of the population and the number of rounds, there …

Persistent link: https://www.econbiz.de/10010873458

Generalized synchronization in complex dynamical networks via adaptive couplings

Liu, Hui; Chen, Juan; Lu, Jun-an; Cao, Ming - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 8, pp. 1759-1770

connection degree. Finally, we discuss in detail how a network’s degree of heterogeneity affects its generalization …

Persistent link: https://www.econbiz.de/10010873730

Multiplicative noise enhances spatial reciprocity

Yao, Yao; Chen, Shen-Shen - In: Physica A: Statistical Mechanics and its Applications 413 (2014) C, pp. 432-437

Recent research has identified the heterogeneity as crucial for the evolution of cooperation in spatial population …

Persistent link: https://www.econbiz.de/10010906962

Measuring edge importance to improve immunization performance

Huang, He; Yan, Zhijun; Pan, Yaohui - In: Physica A: Statistical Mechanics and its Applications 416 (2014) C, pp. 532-540

The edge heterogeneity has a remarkable influence on disease spreading, but it has seldom been considered in the … edge heterogeneity on immunization strategies. Then the edge importance and contact weight are combined to calculate the … strong and weak ties is analyzed. Simulation results show that edge heterogeneity has a significant influence on the …

Persistent link: https://www.econbiz.de/10010939907

Modeling the heterogeneity of human dynamics based on the measurements of influential users in Sina Microblog

Wang, Chenxu; Guan, Xiaohong; Qin, Tao; Yang, Tao - In: Physica A: Statistical Mechanics and its Applications 428 (2015) C, pp. 239-249

characterize the heterogeneity. The numerical simulations validate the model and verify that the short time interval tweeting …

Persistent link: https://www.econbiz.de/10011209697

Interaction in agent-based economics: A survey on the network approach

Bargigli, Leonardo; Tedeschi, Gabriele - In: Physica A: Statistical Mechanics and its Applications 399 (2014) C, pp. 1-15

In this paper we aim to introduce the reader to some basic concepts and instruments used in a wide range of economic networks models. In particular, we adopt the theory of random networks as the main tool to describe the relationship between the organization of interaction among individuals...

Persistent link: https://www.econbiz.de/10010871850

Impact of heterogeneous human activities on epidemic spreading

Yang, Zimo; Cui, Ai-Xiang; Zhou, Tao - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 23, pp. 4543-4548

debate. Motivated by the impact of temporal heterogeneity of human activities on epidemic spreading, this paper studies the … individuals have different mean activities. Extensive simulations show that the heterogeneity of activities at the population … speed of this model is more sensitive to the change of system heterogeneity compared with the model consisted of individuals …

Persistent link: https://www.econbiz.de/10010872467