Results 21 to 30 of about 3,504,331 (315)

Pattern formation in quantum Turing machines [PDF]

open access: yes, 1999
We investigate the iteration of a sequence of local and pair unitary transformations, which can be interpreted to result from a Turing-head (pseudo-spin $S$) rotating along a closed Turing-tape ($M$ additional pseudo-spins).
A. Ekert   +17 more
core   +2 more sources

Agent-based models in cellular systems

open access: yesFrontiers in Physics, 2023
This mini-review discusses agent-based models as modeling techniques for studying pattern formation of multi-cellular systems in biology. We introduce and compare different agent-based model frameworks with respect to spatial representation ...
Jonas Pleyer, Christian Fleck
doaj   +1 more source

Noise-Driven Mechanism for Pattern Formation [PDF]

open access: yes, 2002
We extend the mechanism for noise-induced phase transitions proposed by Ibanes et al. [Phys. Rev. Lett. 87, 020601-1 (2001)] to pattern formation phenomena. In contrast with known mechanisms for pure noise-induced pattern formation, this mechanism is not
A. Becker   +19 more
core   +3 more sources

The biological frontier of pattern formation [PDF]

open access: yes, 2018
Morphogenetic patterns are highly sophisticated dissipative structures. Are they governed by the same general mechanisms as chemical and hydrodynamic patterns? Turing's symmetry breaking and Wolpert's signalling provide alternative mechanisms.
Pismen, L. M.
core   +2 more sources

The atmospheric settling of commercially sold microplastics [PDF]

open access: yesAtmospheric Chemistry and Physics
The atmosphere plays a major role in the dispersion of microplastics in the environment. The atmospheric transport of large microplastics is strongly influenced by their settling behavior, which depends on their physical properties, including size and ...
A. S. W. Reininger   +4 more
doaj   +1 more source

How enhancers regulate wavelike gene expression patterns

open access: yeseLife, 2023
A key problem in development is to understand how genes turn on or off at the right place and right time during embryogenesis. Such decisions are made by non-coding sequences called ‘enhancers.’ Much of our models of how enhancers work rely on the ...
Christine Mau   +8 more
doaj   +1 more source

BBGKY Dynamics: from Localization to Pattern Formation [PDF]

open access: yes, 2002
A fast and efficient numerical-analytical approach is proposed for modeling complex behaviour in the BBGKY--hierarchy of kinetic equations. Our calculations are based on variational and multiresolution approaches in the basis of polynomial tensor ...
Fedorova, Antonina N.   +1 more
core   +2 more sources

Transitory expression of Dlx5 and Dlx6 in maxillary arch epithelial precursors is essential for upper jaw morphogenesis [v3; ref status: indexed, http://f1000r.es/4dd]

open access: yesF1000Research, 2014
Asymmetric, articulated jaws are characteristic of most vertebrate species; they derive from the first pharyngeal arch (PA1) which generates both maxillary and mandibular components.
Yorick Gitton   +2 more
doaj   +1 more source

Reaction-diffusion models for biological pattern formation [PDF]

open access: yes, 2001
We consider the use of reaction-diffusion equations to model biological pattern formation and describe the derivation of the reaction-terms for several illustrative examples.
Crampin, E. J., Maini, P. K.
core   +1 more source

Recent advances in understanding vertebrate segmentation [version 1; referees: 3 approved]

open access: yesF1000Research, 2018
Segmentation is the partitioning of the body axis into a series of repeating units or segments. This widespread body plan is found in annelids, arthropods, and chordates, showing it to be a successful developmental strategy for growing and generating ...
Tomás Pais-de-Azevedo   +3 more
doaj   +1 more source

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