17,141 research outputs found

    The Dear Diane Letters and the Bintel Brief: The Experiences of Chinese and Jewish Immigrant Women in Encountering America

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    This paper employs assimilation theory to examine the experiences of Chinese and Jewish immigrant women at similar stages of their encounters with America. By focusing on the letters in Dear Diane: Letters from Our Daughters (1983), and Dear Diane: Questions and Answers for Asian American Women (1983), and earlier in the century, the letters translated and printed in A Bintel Brief: Sixty Years of Letters from the Lower East Side to the Jewish Daily Forward (1971), this paper compares and contrasts the experiences of Chinese and Jewish women in America. It concludes that, though they have their own unique characteristics, both Chinese and Jewish women shared many common experiences, such as mother-daughter conflict and identity crisis, and both of them faced a difficult challenge in assimilating into American life

    Fisher-KPP dynamics in diffusive Rosenzweig-MacArthur and Holling-Tanner models

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    We prove the existence of traveling fronts in diffusive Rosenzweig-MacArthur and Holling-Tanner population models and investigate their relation with fronts in a scalar Fisher-KPP equation. More precisely, we prove the existence of fronts in a Rosenzweig-MacArthur predator-prey model in two situations: when the prey diffuses at the rate much smaller than that of the predator and when both the predator and the prey diffuse very slowly. Both situations are captured as singular perturbations of the associated limiting systems. In the first situation we demonstrate clear relations of the fronts with the fronts in a scalar Fisher-KPP equation. Indeed, we show that the underlying dynamical system in a singular limit is reduced to a scalar Fisher-KPP equation and the fronts supported by the full system are small perturbations of the Fisher-KPP fronts. We obtain a similar result for a diffusive Holling-Tanner population model. In the second situation for the Rosenzweig-MacArthur model we prove the existence of the fronts but without observing a direct relation with Fisher-KPP equation. The analysis suggests that, in a variety of reaction-diffusion systems that rise in population modeling, parameter regimes may be found when the dynamics of the system is inherited from the scalar Fisher-KPP equation
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