Results 11 to 20 of about 329,485 (247)

Linear modal analysis of L-shaped beam structures: parametric studies [PDF]

open access: yes, 2012
Linear modal analysis of L-shaped beam structures indicates that there are two independent motions, these are in-plane bending and out of plane motions including bending and torsion. Natural frequencies of the structure can be determined by finding the
Cartmell, Matthew   +2 more
core   +1 more source

An Investigation of Harmonic Oscillation of an Ion Particle in a Non-uniform Electrostatic Field [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
In this study, we investigate the possibility to trap an ion particle in a non-uniform electrostatic field generated by two ionic rings, with the aim to obtain and verify general results regarding our proposition.
Jatupon Em-Udom, Nattapon Jaisumroum
doaj   +1 more source

THE LOGARITHMIC SPIRAL AND ITS SPHERICAL COUNTERPART

open access: yesJournal of Industrial Design and Engineering Graphics, 2020
Logarithmic spirals are isogonal trajectories of pencils of lines. From a series of geometric consequences, we pick out a few which are relevant for kinematics: When a logarithmic spiral rolls on a line, its asymptotic point traces a straight line. Hence,
Hellmuth Stachel   +2 more
doaj   +2 more sources

MR-based motion correction for cardiac PET parametric imaging: a simulation study

open access: yesEJNMMI Physics, 2018
Background Both cardiac and respiratory motions bias the kinetic parameters measured by dynamic PET. The aim of this study was to perform a realistic positron emission tomography-magnetic resonance (PET-MR) simulation study using 4D XCAT to evaluate the ...
Rong Guo   +5 more
doaj   +1 more source

Motion analysis of suturing technique with Leap Motion Controller. Proof-of-concept

open access: yesScience Progress, 2022
Purpose Leap Motion Controller is a device that can capture hand gestures and reproduce these as data comprising several parametric elements. We analyzed surgical suture motion using this device and investigated the optical methodology for clinical ...
Shota Tsuyuki   +6 more
doaj   +1 more source

Longitudinal stability augmentation of seaplanes in planing [PDF]

open access: yes, 2015
The towing tank experiments conducted at Yokohama National University from November 30 to December 9 in 2005 suggested a new way of suppressing a dangerous coupled motion between heave and pitch called porpoising. The research in this paper was developed
Brent Richard P.   +10 more
core   +2 more sources

Parametric Sparse SAR Imaging of Ground Moving Targets Integrated With Motion Compensation

open access: yesIEEE Access, 2018
Using the array technique, the multi-channel synthetic aperture radar (SAR) has the capability of high-resolution imaging, detection, and location of the ground moving targets, which is a powerful tool during the remote sensing of smart city.
Gang Xu   +5 more
doaj   +1 more source

Nonrelative sliding gear mechanism based on function-oriented design of meshing line functions for parallel axes transmission

open access: yesAdvances in Mechanical Engineering, 2018
In this article, the design of a nonrelative sliding gear mechanism for parallel axes transmission is presented. First, the general meshing line functions were actively designed for the nonrelative sliding transmission between parallel axes.
Zhen Chen, Huafeng Ding, Ming Zeng
doaj   +1 more source

The dynamical nature of time [PDF]

open access: yes, 2011
It is usually assumed that the "$t$" parameter in the equations of dynamics can be identified with the indication of the pointer of a clock. Things are not so easy, however.
A. Tiemblo   +5 more
core   +3 more sources

The Inverse Compositional Algorithm for Parametric Registration

open access: yesImage Processing On Line, 2016
We present an implementation of the inverse compositional algorithm for parametric motion estimation. It computes a global motion between two images using a non-linear least square technique.
Javier Sánchez
doaj   +1 more source

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