Results 251 to 260 of about 2,908,473 (291)
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Journal of Theoretical Biology, 1981
Abstract Based on the theory of natural selection it is not obvious why sexual reproduction should evolve in Mendelian populations. Sexually reproducing organisms incur a “cost of meiosis”: an asexual lineage would grow at twice the rate of a comparable sexual lineage.
William S. Moore, W. Gordon, S. Hines
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Abstract Based on the theory of natural selection it is not obvious why sexual reproduction should evolve in Mendelian populations. Sexually reproducing organisms incur a “cost of meiosis”: an asexual lineage would grow at twice the rate of a comparable sexual lineage.
William S. Moore, W. Gordon, S. Hines
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Random walks in a random (fluctuating) environment
Russian Mathematical Surveys, 2007The main purpose of this paper is to prove the central limit theorem for the position at large times of a particle performing a discrete-time random walk on the lattice when the particle interacts with a random `environment' (and starts out at a fixed point of the lattice).
BOLDRIGHINI, Carlo +2 more
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Journal of Statistical Physics, 2001
The problem of recurrence/transience for random motions in random media is studied. Apparently, \textit{F. Solomon} [Ann. Probab. 3, No. 1, 1-31 (1975; Zbl 0305.60029)] was the first to treat the problems of such kind: he studied one-dimensional random walk (r.w.) in random environment (r.e.). Some attention was given to r.w. in r.e.
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The problem of recurrence/transience for random motions in random media is studied. Apparently, \textit{F. Solomon} [Ann. Probab. 3, No. 1, 1-31 (1975; Zbl 0305.60029)] was the first to treat the problems of such kind: he studied one-dimensional random walk (r.w.) in random environment (r.e.). Some attention was given to r.w. in r.e.
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Random Walks in Random Environment
2012Random walks in random environment constitute the best example to apply the theory developed in Chap. 2. In order to keep notation and results consistent with the previous chapter, we discuss only the time continuous case. By exploiting the translation invariance of the random environment, the position of the random walk is seen as an additive ...
Tomasz Komorowski +2 more
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Random processes in random environments
Advances in Applied Probability, 1980We shall give a brief survey of some random processes in random environments. Roughly speaking, our examples arise from models in which a phenomenon is described by a Markov process or chain. The Markov process in question is specified by a (usually infinite) number of parameters.
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Limit Cycles in Random Environments
SIAM Journal on Applied Mathematics, 1977We analyze simple predator-prey models in stochastic environments by a perturbational approach near bifurcating regimes. We obtain the stationary probability distribution for the radial variable, even when the system is on a limit cycle. The basic technique involves an adaptation of the method of averaging to take account of random fluctuations.
Lin, Juan, Kahn, Peter B.
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Random walks in random environments
Physical Review A, 1984A renormalization-group analysis is carried out of the long-time behavior of random walks in an environment with a positionally random local drift force. It is argued that, independent of the strength of the disorder, the mean-square displacement, $〈{x}^{2}(t)〉$, is linear in time (i.e., diffusive) for dimensions $d\ensuremath{\gtrsim}2$.
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