نتایج جستجو برای: random drift

تعداد نتایج: 313333  

Journal: :The Cryosphere 2021

Abstract. Developing accurate sea ice drift forecasts is essential to support the decision-making of maritime end-users operating in Arctic. In this study, two calibration methods have been developed for improving 10 d from an operational prediction system (TOPAZ4). The are based on random forest models (supervised machine learning) which were trained using target variables either drifting buoy...

2014
B. Walsh

2. NEUTRAL EVOLUTION IN ONEAND TWO-LOCUS SYSTEMS 1 The Wright-Fisher Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Loss of Heterozygosity by Random Genetic Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Probabilities and Times to Fixation or Loss . . . . . . . . . . . . . . . . . . . . . . . . ....

1998
P. H. DIAMOND M. N. ROSENBLUTH F. L. HINTON M. MALKOV J. FLEISCHER A. SMOLYAKOV

We present a theory of zonal flow drift wave dynamics. Zonal flows are generated by modulational instability of a drift wave spectrum, and are damped by collisions. Drift waves undergo random shearing-induced refraction, resulting in increased mean square radial wavenumber. Drift waves and zonal flows together form a simple dynamical system, which has a single stable fixed point. In this state,...

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