نتایج جستجو برای: axial field

تعداد نتایج: 829038  

F Khosravi M Ghadiri, M Simyari S. A Hosseini,

The main purposes of the present work are devoted to the investigation of the free axial vibration, as well as the time-dependent and forced axial vibration of a SWCNT subjected to a moving load. The governing equation is derived through using Hamilton's principle. Eringen’s nonlocal elasticity theory has been utilized to analyze the nonlocal behaviors of SWCNT. A Galerkin method based on a clo...

1998
Derek Imrie

The predictions of a simple monte-carlo model of the operation of vacuum phototriodes in an axial magnetic field are presented and compared to some available experimental measurements.

in this study, we have sought to provide a comprehensive conceptual model of the concept of success in the field of home business. In this regard, we have adopted a qualitative approach based on grounded theory (GT) as a comprehensive method for collecting data with 18 home-based business owners (in the field of kilim weaving, pottery and packaging). And key informants of such businesses underw...

2005
A. E. Dorokhov

The correlator of singlet axial-vector and vector currents in the external electromagnetic field is studied within the instanton liquid model of QCD vacuum. In the chiral limit we calculate the longitudinal w (0) L and transversal w (0) T with respect to axial-vector index invariant amplitudes at arbitrary momentum transfer q. It is demonstrated how the anomalous longitudinal part of the correl...

Journal: :Physical review letters 2011
Nima Tabatabaei Andreas Mandelis

Energy transport in diffusion-wave fields is gradient-driven and therefore diffuse, yielding depth-integrated responses with poor axial resolution. Using matched-filter principles, we propose a methodology enabling these parabolic diffusion-wave energy fields to exhibit energy localization akin to propagating hyperbolic wave fields. This not only improves axial resolution but also allows for de...

2010
G. N. Throumoulopoulos H. Tasso

A nonlinear two-dimensional steady state solution in the framework of hydrodynamics describing a row of periodic counter-rotating vortices is extended to the magnetohydrodynamic (MHD) equilibrium equation with incompressible flow of arbitrary direction. The extended solution covers a variety of equilibria because four surface quantities remain free. Similar to the case of the MHD cat-eyes equil...

2015
Jing Zhao Bin Li Zhongxin Gu Omar Hegazy

Axial flux permanent-magnet synchronous machines (PMSMs) are very suitable candidates for the power train of electric vehicles (EVs) due to high power density and high efficiency. This paper researches an axial flux PMSM with radially sliding permanent magnets (PMs) to fulfill field-weakening control. The field weakening principle and the structure of this kind of axial flux PMSM by mechanical ...

1994
R. Alkofer

The role of chiral transformations in effective theories modeling Quantum Chromo Dynamics is reviewed. In the context of the Nambu–Jona–Lasinio model the hidden gauge and massive Yang–Mills approaches to vector mesons are demonstrated to be linked by a special chiral transformation which removes the chiral field from the scalar–pseudoscalar sector. The chirally rotated axial vector meson field ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Huapei Wang Dennis V Kent Pierre Rochette

The geomagnetic field is predominantly dipolar today, and high-fidelity paleomagnetic mean directions from all over the globe strongly support the geocentric axial dipole (GAD) hypothesis for the past few million years. However, the bulk of paleointensity data fails to coincide with the axial dipole prediction of a factor-of-2 equator-to-pole increase in mean field strength, leaving the core dy...

Journal: :South African Computer Journal 2006
Leonard Hagger Ian Douglas Sanders

Axial line placement is one step in a method known as space syntax which is used in town planning to analyse architectural structures. This is becoming increasingly important in the quickly growing urban world of today. The field of axial line placement is an area of space syntax that has previously been done manually which is becoming increasingly impractical. Research is underway to automate ...

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