نتایج جستجو برای: asymmetric fields

تعداد نتایج: 309308  

Journal: :Nonlinear Dynamics 2021

This paper presents a study on nonlinear asymmetric vibrations in shallow spherical caps under pressure loading. The Novozhilov’s shell theory is used for modeling the structural strains. A reduced-order model developed through Rayleigh–Ritz method and Lagrange equations. equations of motion are numerically integrated using an implicit solver. bifurcation scenario addressed by varying external ...

Journal: :Symmetry 2021

In this work, the radiation from electrons in multi-periodic undulator fields with symmetric and asymmetric harmonics was analyzed using generalized Bessel functions formalism. The asymmetric, symmetric, anti-symmetric periodic magnetic were studied order to get enhanced of high (UR). effect on spontaneous stimulated UR explored. exact integral forms for coefficients obtained undulators general...

2013
Hamid Reza Hamedi Mostafa Sahrai Habib Tajalli

A theoretical investigation is carried out into the impact of incoherent pumping fields and quantum interference induced by incoherent pumping fields on the Kerr nonlinearity in a three-level asymmetric semiconductor quantum well system. It is found that Kerr nonlinearity is so sensitive to the rate of incoherent pumping fields, but insensitive to the quantum interference induced by incoherent ...

مبینی, بهرام, پرنیان پور, محمد, کهریزی, صدیقه, برویس, سها ,

 Background: Changes in load during asymmetric holding may be associated with particularly high risk of loss of balance and spinal injury. Therefore, in order to assess occupational lesions and to make preventive rehabilitation programs in such conditions like holding dynamic loads in asymmetric postures could be important.  Methods:  In a cross-sectional study, COP amplitude and velocit...

Journal: :Investigative ophthalmology & visual science 2007
Patrick H W Chu Henry H L Chan Brian Brown

PURPOSE To use the global flash multifocal electroretinogram (mfERG) in patients with asymmetric glaucoma to determine whether retinal function is affected in fellow eyes that have no glaucomatous visual field defects. METHODS Forty normal subjects and 12 patients with asymmetric glaucoma were recruited for visual field and mfERG measurement. The mfERG was assessed by using a global-flash sti...

Journal: :Physical review letters 2007
W Gillijns A V Silhanek V V Moshchalkov C J Olson Reichhardt C Reichhardt

We experimentally demonstrate that the origin of multiply reversed rectified vortex motion in an asymmetric pinning landscape not only is a consequence of the vortex-vortex interactions but also essentially depends on the ratio between the characteristic interaction distance and the period of the asymmetric pinning potential. We study four samples with different periods d of the asymmetric pote...

2016
Alejandro Tabas Anita Siebert Selma Supek Daniel Pressnitzer Emili Balaguer-Ballester André Rupp

Communication sounds are typically asymmetric in time and human listeners are highly sensitive to this short-term temporal asymmetry. Nevertheless, causal neurophysiological correlates of auditory perceptual asymmetry remain largely elusive to our current analyses and models. Auditory modelling and animal electrophysiological recordings suggest that perceptual asymmetry results from the presenc...

2007
P. A. Cassak

A Sweet-Parker-type scaling analysis for asymmetric antiparallel reconnection in which the reconnecting magnetic field strengths and plasma densities are different on opposite sides of the dissipation region is performed. Scaling laws for the reconnection rate, outflow speed, the density of the outflow, and the structure of the dissipation region are derived from first principles. These results...

2010
K. Malakit M. A. Shay P. A. Cassak C. Bard

[1] Recently, Cassak and Shay (2007) applied a generalized Sweet‐Parker analysis to derive scaling laws for gross properties of asymmetric magnetic reconnection, including the reconnection rate, outflow speed, and outflow density. This study presents the first comprehensive test of this scaling theory using fully electromagnetic particle‐in‐cell simulations of antiparallel asymmetric magnetic r...

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