نتایج جستجو برای: interfacial imperfection

تعداد نتایج: 23635  

2015
Artem Saleev Nikolai Nikolaev Frank Rathmann F. Rathmann

Searches of the electric dipole moment (EDM) at a pure magnetic ring, like COSY, encounter strong background coming from magnetic dipole moment (MDM). The most troubling issue is the MDM spin rotation in the so-called imperfection, radial and longitudinal, B-fields. To study the systematic effects of the imperfection fields at COSY we proposed the original method which makes use of the two stat...

2004
CHANG Q. SUN C. Q. Sun

Crystal binding energy of a core electron at the 3d5/2 level of a Pd atom has been estimated to be −4.0 ± 0.02 eV by decoding the X-ray photoelectron spectra obtained from both the Pd surfaces and the Pd nanoparticles. Findings indicate that the increase in the binding energy originates from the effect of coordination number (CN) imperfection of atoms at a flat surface or at the curved surface ...

Journal: :journal of structural engineering and geo-techniques 2012
nima rahmani mehran s. razzaghi mahmoud hosseini

this study aims to investigate the effects of geometric imperfections on buckling of thin cylindrical shells due to global shear. to this end, more than 320 finite element models of cylindrical shells with different diameter to thickness ratios were prepared. random imperfections with different amplitudes were applied to numerical models. the results revealed that global buckling of cylindrical...

2011
R. Degenhardt R. Zimmermann A. Kling D. Wilckens

The Space industry demand for lighter and cheaper launcher transport systems. The upcoming EU project DESICOS (New Robust DESIgn Guideline for Imperfection Sensitive COmposite Launcher Structures), which will start in 2012, contributes to these aims by a new design procedure for imperfection sensitive composite launcher structures, exploiting the worst imperfection approach efficiently by imple...

Journal: :J. Comb. Theory, Ser. B 2001
Stefanie Gerke Colin McDiarmid

The imperfection ratio is a graph invariant which indicates how good a lower bound the weighted clique number gives on the weighted chromatic number, in the limit as weights get large. Its introduction was motivated by investigations of the radio channel assignment problem, where one has to assign channels to transmitters and the demands for channels at some transmitters are large. In this pape...

2007
Graciela Nasini

Beyond perfection, the field to be explored is too wide. In this context, several ways to classify imperfect graphs or, equivalently, 0, 1 (clique-node) imperfect matrices can be found in the literature. From the polyhedral point of view, ideal matrices are to set covering problems what perfect matrices are to set packing problems. In fact, if a matrix is ideal, its linear relaxation is an inte...

ژورنال: مهندسی دریا 2015

Brace and chord members of a tubular joint always have a degree of geometrical imperfection due to the manufacturing, transportation and installation processes and also the action of various loads during the lifetime of the structure. However, during the analysis and design of tubular joints, geometrical imperfection is not usually taken into account. Considering the geometrical imperfection in...

Journal: :مهندسی سازه 0
فرزاد برزگر جلیلی مقام محمدرضا شیدایی

the existence of some geometrically imperfect members, like initial curvature in a double layer space structures with hundreds or thousands of members is almost inevitable. these imperfections give rise to loss of load bearing capacity of double layer space structures. to evaluate the effect of initial member imperfection on load bearing capacity of double layer space structures and their failu...

Journal: :CoRR 2017
Hamed Ghanbari Hadi Zayyani Ehsan Yazdian

This letter proposes a multiple parametric dictionary learning algorithm for direction of arrival (DOA) estimation in presence of array gain-phase error and mutual coupling. It jointly solves both the DOA estimation and array imperfection problems to yield a robust DOA estimation in presence of array imperfection errors and off-grid. In the proposed method, a multiple parametric dictionary lear...

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