منابع مشابه
Segregation in diffusion - limited multispecies pair annihilation
The kinetics of the q species pair annihilation reaction (A i + A j → ∅ for 1 ≤ i < j ≤ q) in d dimensions is studied by means of analytical considerations and Monte Carlo simulations. In the long-time regime the total particle density decays as ρ(t) ∼ t −α. For d = 1 the system segregates into single species domains, yielding a different value of α for each q; for a simplified version of the m...
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Abstract. Spatial has always been an inherent component of demography, and demographic processes are inherently spatiotemporal. Recognizing the importance of spatial in general and spatial segregation in particular in demographic analysis has created new positions in demography and its conceptual and analytical frameworks. The notion of spatial segregation refers to the distribution of social...
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Cytoplasmic male sterility (cms) in rye (Secale cereale L.), especially cytoplasma PAMPA, is used commercially in hybrid breeding programmes. The development of molecular markers that are tightly linked to the numerous genes coding for pollen fertility is expected to have great impact in the field. Morphological and cytological analyses of plants from a three-way cross C394: [(S67P/94 x S38/94)...
متن کامل2 00 4 Symmetry and species segregation in diffusion - limited pair annihilation
We consider a system of q diffusing particle species A1, A2,. .. , Aq that are all equivalent under a symmetry operation. Pairs of particles may annihilate according to Ai + Aj → 0 with reaction rates kij that respect the symmetry, and without self-annihilation (kii = 0). In spatial dimensions d > 2 mean-field theory predicts that the total particle density decays as ρ(t) ∼ t −1 , provided the ...
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In the experiments reported here, we attempted to find out more about how the auditory system is able to separate two simultaneous harmonic sounds. Previous research (Halikia & Bregman, 1984a, 1984b; Scheffers, 1983a) had indicated that a difference in fundamental frequency (F0) between two simultaneous vowel sounds improves their separate identification. In the present experiments, we looked a...
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ژورنال
عنوان ژورنال: The School Review
سال: 1906
ISSN: 0036-6773
DOI: 10.1086/434930