Results 91 to 100 of about 195,620 (294)

Flexible IMU Sensor Array For 3D Colonoscope Shape Reconstruction and AI‐Based Loop Detection

open access: yesAdvanced Science, EarlyView.
We propose a sensing platform for 3D visualization of the colonoscope combined with artificial intelligence (AI)‐based loop detection. The system consists of an array of 15 inertial measurement units (IMUs) mounted on a flexible printed circuit board that can be retrofitted into the instrument channel of conventional colonoscopes.
Tuukka Panula   +3 more
wiley   +1 more source

Research of Tooth Profile Error Evaluation Method based on Cartesian Coordinate Measurement Method

open access: yesJixie chuandong, 2016
The tooth profile error is one important individual errors of gear,with wide use of the coordinate measuring machine in gear measurement,the Cartesian coordinate measuring method is becoming more and more widely applied in gear error measurement field ...
Zhang Bai, Lin Jiachun
doaj  

A Model of Movement Coordinates in Motor Cortex: Posture-Dependent Changes in the Gain and Direction of Single Cell Tuning Curves [PDF]

open access: yes, 2000
Central to the problem of elucidating the cortical mechanisms that mediate movement behavior is an investigation of the coordinate systems by which movement variables are encoded in the firing rates of individual motor cortical neurons.
Ajemian, Robert   +2 more
core   +1 more source

Shadow‐Calibrated Stereo Vision for Colorimetric Sweat Analysis

open access: yesAdvanced Science, EarlyView.
By establishing a mathematical model that reconstructs 3D structures through geometric features of object shadows under controlled illumination, and combining it with Convolutional Neural Network‐based 2D image analysis for volumetric calibration, this work enables highly accurate 3D morphological reconstruction.
Ting Xiao   +7 more
wiley   +1 more source

Mapping Ground-based Coronagraphic Images to Helioprojective-Cartesian Coordinate System by Image Registration

open access: yesThe Astrophysical Journal
A few ground-based solar coronagraphs have been installed in western China for observing the low-layer corona in recent years. However, determining the helioprojective coordinates for the coronagraphic data with high precision is an important but ...
Feiyang Sha   +16 more
doaj   +1 more source

Orthogonal Linear Combinations of Gaussian Type Orbitals

open access: yes, 2009
The set of Gaussian Type Orbitals g(n1,n2,n3) of order (n+1)(n+2)/2, of common n=n1+n2 ...
?ivkovi?   +29 more
core   +1 more source

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

open access: yesAdvanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Mathematic modeling of frictional heating during rotary motion [PDF]

open access: yes, 2016
В статье формулируется математическая постановка задачи для случая локального фрикционного нагрева в режиме трения верчения. Осуществляется переход от цилиндрической системы координат к декартовой.
Ивкина, О. П.
core  

$\texttt{PyTranSpot}$ - A tool for multiband light curve modeling of planetary transits and stellar spots

open access: yes, 2017
Several studies have shown that stellar activity features, such as occulted and non-occulted starspots, can affect the measurement of transit parameters biasing studies of transit timing variations and transmission spectra. We present $\texttt{PyTranSpot}
Cubillos, P. E.   +7 more
core   +1 more source

Asymmetric Electrostrain/Electrobending in Piezoelectric Ceramics: Role of Defect Dipoles or Oxygen Vacancies

open access: yesAdvanced Science, EarlyView.
Defect‐configurational origins of the asymmetric apparent electrostrain are revealed in different piezoelectric ceramics via atomic‐scale visualization of defect configurations. Migration of oxygen vacancies leads to the electrobending effect in N2‐sintered BaTiO3, while defect dipoles in Ba0.99TiO2.99 generate true asymmetric electrostrain without ...
Jie Wang   +7 more
wiley   +1 more source

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