نتایج جستجو برای: autonomous existence
تعداد نتایج: 248613 فیلتر نتایج به سال:
A dichotomous choice for metazoan cells is between proliferation and differentiation. Measuring tRNA pools in various cell types, we found two distinct subsets, one that is induced in proliferating cells, and repressed otherwise, and another with the opposite signature. Correspondingly, we found that genes serving cell-autonomous functions and genes involved in multicellularity obey distinct co...
Abstract The present study aimed at discovering the practices and strategies autonomous EFL learners pursue in their endeavor to master English. It thus set out in the Iranian context, with 60 EFL learners, both autonomous and non-autonomous, as participants. The gathered data through a questionnaire and an interview were subjected to content and descriptive analysis. The results showed that bo...
Abstract The present study aimed at discovering the practices and strategies autonomous EFL learners pursue in their endeavor to master English. It thus set out in the Iranian context, with 60 EFL learners, both autonomous and non-autonomous, as participants. The gathered data through a questionnaire and an interview were subjected to content and descriptive analysis. The results showed that bo...
We prove existence of a competitive equilibrium in a version of a Ramsey model in which leisure enters the utility function. The analysis is carried out by means of a direct and technically simple approach that allows us to obtain detailed results concerning the behavior of equilibrium allocations and prices.
J. Dynamics and Diff. Eqns., in press, 2004. The article is devoted to the study of non-autonomous Navier-Stokes equations. First, the authors have proved that such systems admit compact global attractors. This problem is formulated and solved in the terms of general non-autonomous dynamical systems. Second, they have obtained conditions of convergence of non-autonomous Navier-Stokes equations....
We give a result on existence of periodic orbits for autonomous differential systems with arbitrary finite dimension. It is based on a Poincaré-Bendixson property enjoyed by a new class of monotone systems introduced in L. A. Sanchez, Cones of rank 2 and the PoincaréBendixson property for a new class of monotone systems, Journal of Differential Equations 216 (2009), 1170-1190. A concrete applic...
In this paper, it is analyzed a non-classical non-autonomous diffusion equation with delay. First, the well-posedness and the existence of a local solution is proved by using a fixed point theorem. Then, the existence of solutions defined globally in future is ensured. The asymptotic behaviour of solutions is analyzed within the framework of pullback attractors as it has revealed a powerful the...
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