نتایج جستجو برای: restricted variation

تعداد نتایج: 410157  

Journal: :The British Journal for the Philosophy of Science 2021

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In the restricted elliptical linear model, an approximation for the risk of a general shrinkage estimator of the regression vector-parameter is given. Superiority condition of the shrinkage estimator over the restricted estimator is investigated under the elliptical assumption. It is evident from numerical results that the shrinkage estimator performs better than the unrestricted one...

Journal: :Electr. J. Comb. 2005
Edward A. Bender E. Rodney Canfield

We study compositions of the integer n in which the first part, successive differences, and the last part are constrained to lie in prescribed sets L,D,R, respectively. A simple condition on D guarantees that the generating function f(x,L,D,R) has only a simple pole on its circle of convergence and this at r(D), a function independent of L and R. Thus the number of compositions is asymptotic to...

Journal: :iranian biomedical journal 0
آمنه محمدی روشنده amaneh mohammadi roushandeh ایرج صالحی iraj salehi مطهره مرتضوی motahareh mortazavi

background: a high-fat diet (hfd) and fat accumulation promote the oxidative stress formation, which in turn has hazardous effects on reproductive system and fertility. therefore, the present study examines the potential positive effects of a restricted high-fat diet (rhfd) and antioxidants consumption on sperm parameters in rats. methods: 48 male albino wistar rats divided to four groups (n=12...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1392

heuristics are often used to provide solutions for flow shop scheduling problems.the performance of a heuristic is usually judged by comparing solutions and run times on test cases.this investigation proposes an analytical alternative ,called asymptotic convergence ,which tests the convergence of the heuristic to a lower bound as problem size grows. the test is a stronger variation of worst cas...

Journal: :Journal of the Australian Mathematical Society 1977

Journal: :European Journal of Combinatorics 2007

Journal: :Journal of Research of the National Bureau of Standards, Section B: Mathematical Sciences 1969

Journal: :Annales Mathematicae et Informaticae 2018

Journal: :Applied Mathematical Sciences 2013

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