The asymptotical behavior of population models with diffusion is studied.

研究了一般的具有周期环境扩散种群模型的渐近性态。

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They use statistical models designed to calculate so-called excess mortality that occurs during the period when influenza viruses are circulating widely in a given population.

所使用的统计模型旨在计算流感病毒在特定人群中广泛传播期间发生的所谓超额死亡率。

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Unexpectedly, the most promising lead came from dusty old models of population genetics, raised from their resting place in undergraduate textbooks.

出人意料的是，从大学本科生的教科书里，挖出的一些种群遗传学的尘封已久的旧模型，居然最有希望荣登谜底。

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Whale researchers use population models that factor a species' reproductive rate and its natural mortality to come up with an estimate of how many are likely dying.

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The country's success in reducing child mortality and population growth can be models for other countries.

CNN: Stop cashing in on Bangladeshi workers

Climate models simulate the statistical properties of the whole population of all possible climate realizations for a certain set of boundary conditions (which can change with time).

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