نتایج جستجو برای: angular orientation

تعداد نتایج: 175162  

Journal: :Journal of physics 2022

Abstract We report on the characterization of angular-dependent emission two different single-photon emitters based nitrogen-vacancy centers in nanodiamond and core-shell CdSe/CdS quantum dot nanoparticles. The were characterized a confocal microscope setup by spectroscopy Hanbury-Brown Twiss interferometry. is measured using back focal plane imaging technique. A theoretical model angular patte...

1996
Christian Bolterauer Helmut Heller

In polarized infrared (IR) absorption experiments , dichroic values are used to study the structure and orientation of lipid molecules. From computer simulations , we obtained angular distributions of IR transition moment (TM) orientations of the stretch vibrations of CH 2 groups of

2006
Stephen L. Adler

We calculate the vacuum polarization-induced ellipticity acquired by a linearly polarized laser beam of angular frequency ω̄ on traversing a region containing a transverse magnetic field rotating with a small angular velocity Ω around the beam axis. The transmitted beam contains the fundamental frequency ω̄ and weak sidebands of frequency ω̄±2Ω, but no other sidebands. To first order in small quan...

Journal: :Journal of pediatric orthopedics 2005
Afshin Aminian Andrew Mahar Walid Yassir Peter Newton Dennis Wenger

Femoral head coverage achieved with an acetabular osteotomy for hip dysplasia is achieved by acetabular rotation that can be restricted by osteotomy orientation and soft tissue attachments to the acetabular fragment. Procedures that allow excess rotation or motion in an undesirable direction (especially external rotation) may have undesirable consequences. Rotational aspects of these procedures...

Journal: :Journal of Intelligent and Robotic Systems 2006
Matjaz Mihelj

The paper considers a technique for computation of the inverse kinematic model of the human arm. The approach is based on measurements of the hand position and orientation as well as acceleration and angular rate of the upper arm segment. A quaternion description of orientation is used to avoid singularities in representations with Euler angles. A Kalman filter is designed to integrate sensory ...

Journal: :Perception 2007
Maarten W A Wijntjes Astrid M L Kappers

We investigated the angular resolution subserving the haptic perception of raised-line drawings by measuring how accurately observers could discriminate between two angle sizes under various conditions. We found that, for acute angles, discrimination performance is highly dependent on exploration strategy: mean thresholds of 2.9 degrees and 6.0 degrees were found for two different exploration s...

Journal: :The Review of scientific instruments 2015
Jose Luis F Cuñado Javier Pedrosa Fernando Ajejas Alberto Bollero Paolo Perna Francisco J Teran Rodolfo Miranda Julio Camarero

Here, we report on a versatile full angular resolved/broad temperature range/vectorial magneto optical Kerr effect (MOKE) magnetometer, named TRISTAN. Its versatility relies on its capacity to probe temperature and angular dependencies of magnetization reversal processes without the need to do any intervention on the apparatus during measurements. The setup is a combination of a vectorial MOKE ...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2007
Matthan W. A. Caan Anne Willem de Vries Ganesh Khedoe Erik Akkerman Lucas J. van Vliet Cornelis A. Grimbergen Frans Vos

In Diffusion Tensor Imaging (DTI), differently oriented fiber bundles inside one voxel are incorrectly modeled by a single tensor. High Angular Resolution Diffusion Imaging (HARDI) aims at using more complex models, such as a two-tensor model, for estimating two fiber bundles. We propose a new method for creating experimental phantom data of fiber crossings, by mixing the DWI-signals from high ...

Journal: :NeuroImage 2014
Thijs Dhollander Louise Emsell Wim Van Hecke Frederik Maes Stefan Sunaert Paul Suetens

Ever since the introduction of the concept of fiber tractography, methods to generate better and more plausible tractograms have become available. Many modern methods can handle complex fiber architecture and take on a probabilistic approach to account for different sources of uncertainty. The resulting tractogram from any such method typically represents a finite random sample from a complex d...

2012
I. A. Ivanov A. S. Kheifets Vladislav V. Serov

Attosecond science has extended experimental studies of atomic and molecular photoionization into a new dimension. In atoms, a time delay between absorption of an attosecond XUV pulse and subsequent emission of a photoelectron has been measured [1, 2, 3]. In molecules, electron localization and attosecond control have been demonstrated in pump-probe photoionization experiments [4, 5]. Experimen...

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