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THE EFFECTS OF VARYING PARAMETER VALUES AND HETEROGENEITY IN AN INDIVIDUAL-BASED MODEL OF PREDATOR-PREY INTERACTION

CHIVERS, WILLIAM J.; HERBERT, RIC D. - In: Advances in Complex Systems (ACS) 06 (2003) 03, pp. 441-456

An individual-based model which produces nonlinear predator-prey dynamics is described. The importance of individual variation to the stability of the population dynamics predicted by the model and the advantages of the individual-based approach to modelling ecological systems is discussed. The...

Persistent link: https://www.econbiz.de/10005047480

BIO-DEVELOPMENT OF MOTORWAY NETWORK IN THE NETHERLANDS: A SLIME MOULD APPROACH

ADAMATZKY, ANDREW; LEES, MICHAEL; SLOOT, PETER - In: Advances in Complex Systems (ACS) 16 (2013) 02, pp. 1250034-1

Plasmodium of a cellular slime mould Physarum polycephalum is a very large eukaryotic microbe visible to the unaided eye. During its foraging behavior the plasmodium spans sources of nutrients with a network of protoplasmic tubes. In this paper we attempt to address the following question: Is...

Persistent link: https://www.econbiz.de/10010882956

MIGRATION AS A MECHANISM TO PROMOTE COOPERATION

HELBING, DIRK; YU, WENJIAN - In: Advances in Complex Systems (ACS) 11 (2008) 04, pp. 641-652

A unified approach is proposed, which integrates game-theoretical models with models of directed motion. Specifically, strategic interactions in space and imitation of more successful neighboring strategies, as studied by spatial games, are combined with success-driven migration based on "test...

Persistent link: https://www.econbiz.de/10005080906

ON MODELING COMPLEX COLLECTIVE BEHAVIOR IN MYXOBACTERIA

JIANG, YI; SOZINOVA, OLGA; ALBER, MARK - In: Advances in Complex Systems (ACS) 09 (2006) 04, pp. 353-367

This paper reviews recent progress in modeling collective behaviors in myxobacteria using lattice gas cellular automata approach (LGCA). Myxobacteria are social bacteria that swarm, glide on surfaces and feed cooperatively. When starved, tens of thousands of cells change their movement pattern...

Persistent link: https://www.econbiz.de/10005080945

ACCELERATED INNOVATION AND INCREASED SPATIAL DIVERSITY OF US POPULAR CULTURE

BENTLEY, R. ALEXANDER; ORMEROD, PAUL - In: Advances in Complex Systems (ACS) 15 (2012) 01, pp. 1150011-1

We observe a marked increase in the spatial homogeneity of the popularity of first names across the United States in recent decades. We explain this by calibrating a modified standard model of neutral cultural evolution to the record of first name popularities for the United States as a whole...

Persistent link: https://www.econbiz.de/10009653109

COARSENING OF VORTEX RIPPLES IN SAND

KRUG, JOACHIM - In: Advances in Complex Systems (ACS) 04 (2001) 04, pp. 353-362

The coarsening of an array of vortex ripples prepared in an unstable state is discussed within the framework of a simple mass transfer model first introduced by K. H. Andersen et al. (see Ref. 1). Two scenarios for the selection of the final pattern are identified. When the initial state is...

Persistent link: https://www.econbiz.de/10004970185

PATTERN FORMATIONS IN CHEMICAL SYSTEMS

MASELKO, JERZY - In: Advances in Complex Systems (ACS) 06 (2003) 01, pp. 3-14

The formation of complex patterns in chemical systems is discussed in the following cases: relations of pattern formation to thermodynamics theories; unusually complex pattern formation in very simple experimental chemical systems; and numerical simulation of patterns that develop in...

Persistent link: https://www.econbiz.de/10004977691

CELLULAR AUTOMATON MODELS OF TUMOR DEVELOPMENT: A CRITICAL REVIEW

MOREIRA, JOANA; DEUTSCH, ANDREAS - In: Advances in Complex Systems (ACS) 05 (2002) 02, pp. 247-267

Cancer development can be viewed as an example of spatio-temporal pattern formation. Several attempts have been made to model and predict malignant tumor behavior and also to account for immune system response and the impact of possible clinical treatments. Modeling started from a macroscopic...

Persistent link: https://www.econbiz.de/10005050845

DYNAMICS OF DISCRETE OPINIONS WITHOUT COMPROMISE

ÖZTÜRK, M. KAAN - In: Advances in Complex Systems (ACS) 16 (2013) 06, pp. 1350010-1

generalized extreme value distribution. The diffusion coefficient of an opinion increases linearly with the number of opinions …

Persistent link: https://www.econbiz.de/10010882958

THE SPATIAL AND TEMPORAL DIFFUSION OF STYLISTIC INNOVATIONS IN MATERIAL CULTURE

SCHOLNICK, JONATHAN B. - In: Advances in Complex Systems (ACS) 15 (2012) 01, pp. 1150010-1

Many explanations for the sigmoid or S-shaped curves that characterize the diffusion of innovations through time have … underlying social forces that structure diffusion through both space and time. Using historic New England gravestones and their … among consumers can generate both wave-like diffusion patterns through space and lead to the persistence of cultural …

Persistent link: https://www.econbiz.de/10009653116