نتایج جستجو برای: reciprocal and non
تعداد نتایج: 17008762 فیلتر نتایج به سال:
The Wiener-Khintchine theorem dictates that the correlation function of any stationary, stochastic signal y(t) has as its Fourier transform a function that is necessarily both real and non-negative. In this paper, I explore the real-space, geometric consequences of this reciprocal-space non-negativity constraint. I review prior results addressing this issue, and I also introduce a family of new...
this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...
This paper gives a sharp lower bound on the spectral radius ρ(A) of a reciprocal Perron–Frobenius matrix A ∈ M2g(Z), and shows in particular that ρ(A) ≥ (3 + √ 5)/2. This bound supports conjectures on the minimal entropy of pseudo-Anosov maps. The proof is based on a study of the curve complex of a directed graph.
this study investigated the effect of reciprocal teaching (rt) on efl learners’ reading comprehension. fifty intermediate learners participated in the study and were sampled as the experimental (n = 25) and control groups (n = 25). participants were male and ranged in age from 15 to 16. the reading section of key english test (ket, 2010) was used as the pretest to assess the participants’ entry...
Introduction: Fostering critical thinking and Metacognition is one of the most important objectives in nursing education. This study was designed to investigate the effect of guided reciprocal peer questioning on nursing students' critical thinking and Metacognition skills. Methods: In this quasi experimental study, the experiment group included 30 nursing students in their 6th semester in Bi...
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