Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 6

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  cellular automata
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Influence of a Range of Interaction among Agents on Efficiency and Effectiveness of Knowledge Transfer within an Organisation

100%
Paradowski K., Kowalska-Styczeń A., Malarz K.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 6
1470-1476
EN
In this study we examined how the size of non-formal groups between organisation members affect the transfer of knowledge in the context of the efficiency and effectiveness of this process. To analyse the dynamics of the transfer of knowledge the cellular automata model was used. The model is based on local interactions between members of the organisation, that take place in the nearest neighbourhood. These groups of close neighbours are represented by von Neumann's neighbourhood (four nearest-neighbours) and Moore's neighbourhood (four nearest-neighbours and four next-nearest neighbours) and complex neighbourhood (four nearest neighbours, four next-nearest neighbours and four next-next-neighbours). The results of the simulation show the influence of the size of the neighbourhood on the efficiency of knowledge transfer.
2
Content available remote

Stochastic cellular automata modeling of excitable systems

100%
Szakály T., Lagzi I., Izsák F., Roszol L., Volford A.
Open Physics
|
2007
|
vol. 5
|
issue 4
471-486
EN
A stochastic cellular automaton is developed for modeling waves in excitable media. A scale of key features of excitation waves can be reproduced in the presented framework such as the shape, the propagation velocity, the curvature effect and spontaneous appearance of target patterns. Some well-understood phenomena such as waves originating from a point source, double spiral waves and waves around some obstacles of various geometries are simulated. We point out that unlike the deterministic approaches, the present model captures the curvature effect and the presence of target patterns without permanent excitation. Spontaneous appearance of patterns, which have been observed in a new experimental system and a chemical lens effect, which has been reported recently can also be easily reproduced. In all cases, the presented model results in a fast computer simulation.
3
Content available remote

Spatially extended populations reproducing logistic map

100%
Dzwinel W.
Open Physics
|
2010
|
vol. 8
|
issue 1
33-41
EN
We discuss here the conditions that the spatially extended systems (SES) must satisfy to reproduce the logistic map. To address this dilemma we define a 2-D coupled map lattice with a local rule mimicking the logistic formula. We show that for growth rates of k⩽k ∞ (k ∞ is the accumulation point) the global evolution of the system exactly reproduces the cascade of period doubling bifurcations. However, for k > k ∞, instead of chaotic modes, the cascade of period halving bifurcations is observed. Consequently, the microscopic states at the lattice nodes resynchronize producing dynamically changing spatial patterns. By downscaling the system and assuming intense mobility of individuals over the lattice, the spatial correlations can be destroyed and the local rule remains the only factor deciding the evolution of the whole colony. We found the class of “atomistic” rules for which uncorrelated spatially extended population matches the logistic map both for pre-chaotic and chaotic modes. We concluded that the global logistic behavior can be expected for a spatially extended colony with high mobility of individuals whose microscopic behavior is governed by a specific semi-logistic rule in the closest neighborhood. Conversely, the populations forming dynamically changing spatial clusters behave in a different way than the logistic model and reproduce at least the steady-state fragment of the logistic map.
4
Publication available in full text mode
Content available

Cellular-automata based modeling of heterogeneous biofilm growth for microbiological processes with various kinetic models

100%
Skoneczny S., Skoneczny S.
Chemical and Process Engineering
|
2019
|
vol. 40
|
issue 2
5
Content available remote

The Test of a New Critical Exponent Ϙ by Using Ising Model on the Creutz Cellular Automaton

88%
Merdan Z., Gokbel-Keklikoglu D.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 5
1200-1204
EN
Above the upper critical dimension d_{c} the Ising model is simulated on the Creutz cellular automaton. The values of a new critical exponent Ϙ are obtained by using the simulations for the order parameter and the magnetic susceptibility. At d=4,5,6,7,8, the values of the new critical exponent Ϙ are 0.9904(16), 1.2721(2), 1.4806(24), 1.7626(17), 1.9997(50) for the order parameter, respectively, while those 1.0415(13), 1.2987(27), 1.5133(1), 1.7741(1), 2.0133(28) are for the magnetic susceptibility in the same order. The computed values of the new critical exponent Ϙ are in agreement with theoretical values.
6
Publication available in full text mode
Content available

Cellular particle swarm optimization with a simple adaptive local search strategy for the permutation flow shop scheduling problem

75%
C S.-T. M. J., Medina-Marin J., Martinez-Gomez E. S., Hernandez-Gress E. S., Hernandez-Romero N., Volpi-Leon V.
Archives of Control Sciences
|
2019
|
vol. 29
|
issue 2
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.