نتایج جستجو برای: array factor
تعداد نتایج: 967234 فیلتر نتایج به سال:
فرض کنیم $r$ حلقه ای جابجایی و یکدار، $a$ و $b$ جبر های یکدار بر روی $r$ و $m$ یک $(a,b)$- دو مدول باشد که $m$ به عنوان یک $a$- مدول چپ وفادار و $b$- مدول راست وفادار است. فرض کنیم $left[ {egin{array}{*{20}c} a & m 0 & b end{array}} ight]$ $mathcal{t}=$ جبر مثلثی شامل $a$، $b$ و $m$ است در این جا مشت...
In this study, we have investigated radius dependence of hydrogen storage within armchair (n,n) single walled carbon nanotubes (SWCNT) in a square arrays. To this aim, we have employed equilibrium molecular dynamics (MD) simulation. Our simulations results reveal that radius of carbon nanotubes are an important and influent factor in hydrogen distribution inside carbon nanotubes and consequentl...
One of the important issues in many of array systems such as Radar, Sonar, Mobile, and satellite telecommunications is the estimation of DOA of narrowband received signal. CRB is very important in evaluation of parameter estimation. CRB is the lower bound estimation error variance for any unbiased estimation. In this paper, the array antenna with equal distance arrays is extended in two separat...
The present paper reports the laminar fluid flow and heat transfer of a heated array of circular-perforated and solid fins mounted over a flat surface using the finite-volume method. One to four circular cross-sectional perforations are made along the length of the fins. The SIMPLE algorithm is used for pressure-velocity coupling and the second order upwind technique is employed to discreti...
the autism spectrum disorders (asds) are common neurodevelopmental disorders estimated to affect 1 in 88 children. asd is a complex condition, result of genetic, epigenetic and environmental factors. however, genetic comopnent seems to play an important role. the loss/gain of 1kb and more nucleotides, copy number variation (cnv), is the significant genetic factor in the etiology of asd. the cnv...
In this paper, the role of radiation elements in the performance of reflect array antenna is studied, and each element is designed and simulated and the phase response is compared. Also, the relations needed for designing reflect array antenna are discussed and one sample reflect array antenna is designed in the KU band and the results are presented.
چکیده ندارد.
We generalize the notion of Jacobson graphs into $n$-array columns called $n$-array Jacobson graphs and determine their connectivities and diameters. Also, we will study forbidden structures of these graphs and determine when an $n$-array Jacobson graph is planar, outer planar, projective, perfect or domination perfect.
Given four complex matrices $A$, $B$, $C$ and $D$ where $Ainmathbb{C}^{ntimes n}$ and $Dinmathbb{C}^{mtimes m}$ and let the matrix $left(begin{array}{cc} A & B C & D end{array} right)$ be a normal matrix and assume that $lambda$ is a given complex number that is not eigenvalue of matrix $A$. We present a method to calculate the distance norm (with respect to 2-norm) from $D$ to ...
in this work, some of the lattice plasmon quantum features are examined. Initially, the interaction of the far-field photonic mode and the nanoparticle plasmon mode is investigated. We probe the optical properties of the array plasmon that are dramatically affected by the array geometry. It is notable to mention that the original goal of this work is to examine the quantum feature of the array ...
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