منابع مشابه
Plant Pattern Formation as a Dynamical System
Phyllotactic patterns (from the Greek phyllo (leaf) and taxis (order)) arise whenever a vascular plant produces at its growing tip a series of similar botanical elements, such as leaves, scales or flowerets. The most common and well known of such patterns is one where the elements are arranged in two families of spirals winding in opposite directions. The numbers of spirals in each of these fam...
متن کاملStress Pattern System in Central Sarawani Balochi
The present article investigates the stress pattern system of Central Sarawani Balochi (CSB), spoken in Sarawan located in Sistan and Baluchestan province of the Islamic Republic of Iran, based on metrical theory as developed in Hayes (1995). Correspondingly, the present research illustrates the position of primary and secondary stress in mono-morphemic words, verbal paradigms, compound words, ...
متن کاملPattern formation in a general glycolysis reaction–diffusion system
A general reaction–diffusion system modelling glycolysis is investigated. The parameter regions for the stability and instability of the unique constant steady-state solution is derived, and the existence of time-periodic orbits and non-constant steady-state solutions are proved by the bifurcation method and Leray–Schauder degree theory. The effect of various parameters on the existence and non...
متن کاملTuring pattern formation in the Brusselator system with nonlinear diffusion.
In this work we investigate the effect of density-dependent nonlinear diffusion on pattern formation in the Brusselator system. Through linear stability analysis of the basic solution we determine the Turing and the oscillatory instability boundaries. A comparison with the classical linear diffusion shows how nonlinear diffusion favors the occurrence of Turing pattern formation. We study the pr...
متن کاملCell recognition and pattern formation in the developing nervous system.
The topographic map of cell position in the avian retina is conserved and inverted when retinal ganglion neurons synapse with neurons in the optic tectum. Developmental mechanisms based on molecular gradients that specify positional information and pattern formation have been postulated in the establishment of these topographic maps of cells in retina and optic tectum. Two cell surface proteins...
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ژورنال
عنوان ژورنال: Vacuum
سال: 2005
ISSN: 0042-207X
DOI: 10.1016/j.vacuum.2005.08.014