نتایج جستجو برای: displacement fields

تعداد نتایج: 297850  

2013
E. S. Belenkaya

We consider the magnetic interconnection of Saturn’s northern and southern polar regions controlled by the interplanetary magnetic field (IMF), studying in particular the more complex and interesting case of southward IMF, when the Kronian magnetospheric magnetic field structure is the most twisted. The simpler case of northward IMF is also discussed. Knowledge of the magnetospheric magnetic fi...

Journal: :Brain research. Cognitive brain research 1998
P G Simos R L Diehl J I Breier M R Molis G Zouridakis A C Papanicolaou

Event-related magnetic fields (ERFs) were recorded from the left hemisphere in nine normal volunteers in response to four consonant-vowel (CV) syllables varying in voice-onset time (VOT). CVs with VOT values of 0 and +20 ms were perceived as /ga/ and those with VOT values of +40 and +60 ms as /ka/. Results showed: (1) a displacement of the N1m peak equivalent current dipole toward more medial l...

2004
J.-P. Lasota

Applications of the thermal-viscous disc instability model to various classes of cataclysmic variable very often require the accretion disc to be truncated. I argue that in most cases this inner truncation must be due to the white dwarf’s magnetic field.

2008
M. Bordag

The interaction of the electromagnetic field with a two dimensional plasma sheet intended to describe the pi-electrons of a carbon nano-tube or a C60 molecule is investigated. By integrating out first the displacement field of the plasma or first the electromagnetic field different representations for quantities like the Casimir energy are derived which are shown to be consistent with one anoth...

2008
K. Vergote

The Wave Based Method (WBM) is a deterministic prediction method. Due to its enhanced computational efficiency as compared to other deterministic prediction techniques for steady-state dynamic analysis such as the Finite Element Method (FEM), the WBM is applicable for problem analysis in the lowand midfrequency range. It has been shown already that the WBM is superior to the FEM for the predict...

2008
Wolfgang Lechner Christoph Dellago

Using numerical and analytical calculations we study the structure of vacancies and interstitials in twodimensional colloidal crystals. In particular, we compare the displacement fields of the defect obtained numerically with the predictions of continuum elasticity theory for a simple defect model. In such a comparison it is of crucial importance to employ corresponding boundary conditions both...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2007
William R. Crum Oscar Camara David J. Hawkes

In medical image analysis there is frequently a need to invert dense displacement fields which map one image space to another. In this paper we describe inversion techniques and determine their accuracy in the context of 18 inter-subject brain image registrations. Scattered data interpolation (SDI) is used to initialise locally and globally consistent iterative techniques. The inverse-consisten...

2002
J. P. J. R. BOOKER

Most thermal stress analyses assume that the determination of the temperature field is uncoupled from that of the stress and displacement fields, while assuming that the stress and displacement fields depend on the temperature field. This semi-coupled approach to thermoelasticity is not entirely consistent. In this paper the governing equations for the fully coupled theory of thermoelasticity a...

Journal: :Applied optics 1991
H V Tippur F P Chiang

The paper provides analyses for two optical schemes developed for mapping 3-D crack tip fields in ductile materials. The first scheme combines the in-plane moire method with the projection moire method to determine all three displacement components simultaneously. In the second method, we combined onebeam laser speckle photography with the projection moire method to measure 3-D deformation fiel...

Journal: :Optics express 2017
Ermes Toninelli Matthew P Edgar Paul-Antoine Moreau Graham M Gibson Giles D Hammond Miles J Padgett

The quantised nature of the electromagnetic field sets the classical limit to the sensitivity of position measurements. However, techniques based on the properties of quantum states can be exploited to accurately measure the relative displacement of a physical object beyond this classical limit. In this work, we use a simple scheme based on the split-detection of quantum correlations to measure...

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