Optimal immigration age-patterns in populations of fixed size

Optimal immigration age-patterns in populations of fixed size

analyzing patterns of classroom interaction in efl classrooms in iran

با به کار گیری روش گفتما ن شنا سی در تحقیق حا ضر گفتا ر میا ن آموزگا را ن و زبا ن آموزا ن در کلا سهای زبا ن انگلیسی در ایرا ن مورد بررسی قرار گرفت. ا هداف تحقیق عبا رت بودند از: الف) شنا سا ئی سا ختارهای ارتبا ط گفتا ری میا ن معلمین و زبا ن آموزا ن ب) بررسی تا ثیر نقش جنسیت دبیرا ن و زبا ن آموزان بر سا ختا رهای ارتبا ط گفتا ری میا ن آنها پ) مشخص کردن اینکه آ یا آموزگاران غا لب بر این ارتبا ط گف...

Optimal age-specific election policies in two-level organizations with fixed size

Many organizations — faculties, firms, political bodies, societies, national academies — have recently been faced with the problem of aging. These trends are caused by increasing longevity of the members of these organizations as well as a lower intake at younger ages. The aging problem is particularly pronounced in organizations of fixed size, where no dismissal due to age (up to a statutory “...

Optimal Fixed-Size Controllers for Decentralized POMDPs

Solving decentralized partially observable Markov decision processes (DEC-POMDPs) is a difficult task. Exact solutions are intractable in all but the smallest problems and approximate solutions provide limited optimality guarantees. As a more principled alternative, we present a novel formulation of an optimal fixed-size solution of a DEC-POMDP as a nonlinear program. We discuss the benefits of...

Optimal lineage principle for age-structured populations.

We present a formulation of branching and aging processes that allows age distributions along lineages to be studied within populations, and provides a new interpretation of classical results in the theory of aging. We establish a variational principle for the stable age distribution along lineages. Using this optimal lineage principle, we show that the response of a population's growth rate to...