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Effects of uniform rotational flow on predator–prey system

Lee, Sang-Hee - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 23, pp. 6008-6015

Rotational flow is often observed in lotic ecosystems, such as streams and rivers. For example, when an obstacle interrupts water flowing in a stream, energy dissipation and momentum transfer can result in the formation of rotational flow, or a vortex. In this study, I examined how rotational...

Persistent link: https://www.econbiz.de/10010588638

Stability analysis for systems of nonlinear Hill's equations

Mahmoud, Gamal M.; Bountis, Tassos; Ahmed, Sayed A. - In: Physica A: Statistical Mechanics and its Applications 286 (2000) 1, pp. 133-146

frequencies. As is well known, the stability properties of some fundamental periodic solutions of these systems is often an … the stability properties of some of their simplest periodic solutions analytically as well as numerically. To accomplish … technique of multiple scaling to perform the stability analysis. A three-particle system with free–free boundary conditions is …

Persistent link: https://www.econbiz.de/10010589215

Sentiment cycles in discrete-time homogeneous networks

Gomes, Orlando - In: Physica A: Statistical Mechanics and its Applications 428 (2015) C, pp. 224-238

same structure of analysis in discrete-time indicates that the stability outcome continues to hold when the connectivity …

Persistent link: https://www.econbiz.de/10011209696

A new car-following model considering driver’s sensory memory

Cao, Bao-gui - In: Physica A: Statistical Mechanics and its Applications 427 (2015) C, pp. 218-225

improvement is that MMM can avoid the disadvantage of the sensory buffer time neglected in existing models. The stability … condition of the proposed model is obtained by using linear stability theory. Results show that the stability region decreases … time plays an important role on the stability of traffic flow. …

Persistent link: https://www.econbiz.de/10011209733

Stability analysis of the mixed traffic flow of cars and trucks using heterogeneous optimal velocity car-following model

Yang, Da; Jin, Peter; Pu, Yun; Ran, Bin - In: Physica A: Statistical Mechanics and its Applications 395 (2014) C, pp. 371-383

, truck-following-car case and truck-following-truck case. The effect of different combinations on the stability of traffic … stability analysis method that can derive the stability criterion of the heterogeneous traffic flow mixed by cars and trucks is … through the trajectory analysis. It concludes that the linear stability of the car–truck mixed traffic flow is determined more …

Persistent link: https://www.econbiz.de/10010730353

Market segmentation strategy in internet market

Ren, Yawei; Yang, Deli; Diao, Xinjun - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 8, pp. 1688-1698

stability of the model which is composed of one powerful site and two small sites. One of the most important results that emerge … website on the WWW market. From the stability analysis of the model, we obtain a series of conditions in which small sites can …

Persistent link: https://www.econbiz.de/10010871674

An extended macro model for traffic flow with consideration of multi static bottlenecks

Tang, T.Q.; Li, P.; Yang, X.B. - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 17, pp. 3537-3545

In this paper, we propose a macro model with consideration of multi static bottlenecks to study the impacts of multi static bottlenecks on traffic flow. The numerical results show that the influences are related to the number of static bottlenecks, the distance between two adjacent static...

Persistent link: https://www.econbiz.de/10010872278

The complete strategic classification for a cooperation–competition model in the WWW market

Jiang, Jifa; Cheng, Zhixin - In: Physica A: Statistical Mechanics and its Applications 363 (2006) 2, pp. 527-536

Wang and Wu [Physica A 339 (2004) 609–620] proposed a cooperation–competition model for the WWW market. Under the assumptions that the intrinsic growth rates and maximum fractions are equal, respectively, and that the interaction is symmetric, they provided the strategies for the small sites...

Persistent link: https://www.econbiz.de/10010872372

The role of predator overlap in the robustness and extinction of a four species predator–prey network

Hisi, Andreia N.S.; Guimarães, Paulo R.; Aguiar, … - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4725-4733

Predators and preys often form species networks with asymmetric patterns of interaction. We study the dynamics of a four species network consisting of two weakly connected predator–prey pairs. We focus our analysis on the effects of the cross interaction between the predator of the first pair...

Persistent link: https://www.econbiz.de/10010872792

More memory under evolutionary learning may lead to chaos

Diks, Cees; Hommes, Cars; Zeppini, Paolo - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 4, pp. 808-812

We show that an increase of memory of past strategy performance in a simple agent-based innovation model, with agents switching between costly innovation and cheap imitation, can be quantitatively stabilising while at the same time qualitatively destabilising. As memory in the fitness measure...

Persistent link: https://www.econbiz.de/10010872804