Results 11 to 20 of about 16,179 (242)

A study on estimation of 3-dimensional surface roughness of boring processes including kinematic motion deviations

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The surface roughness is one of the most important characteristics of machined parts. A systematic method is proposed in the paper to simulate the shape generation processes in the boring operations and to estimate the surface roughness of the generated ...
Wiroj THASANA   +3 more
doaj   +1 more source

Inflationary and Phase-transitional Primordial Magnetic Fields in Galaxy Clusters

open access: yesThe Astrophysical Journal, 2023
Primordial magnetic fields (PMFs) are possible candidates for explaining the observed magnetic fields in galaxy clusters. Two competing scenarios of primordial magnetogenesis have been discussed in the literature: inflationary and phase-transitional.
Salome Mtchedlidze   +6 more
doaj   +1 more source

Direct Recovery of Motion and Shape in the General Case by Fixation [PDF]

open access: yes[1990] Proceedings Third International Conference on Computer Vision, 1990
A direct method called fixation is introduced for solving the general motion vision problem: arbitrary motion relative to an arbitrary environment. This method results in a linear constraint equation that explicitly expresses the rotational velocity in terms of the translational velocity.
openaire   +1 more source

Generalizing demonstrated motion trajectories using coordinate-free shape descriptors [PDF]

open access: yesRobotics and Autonomous Systems, 2019
Abstract In learning by demonstration, the generalization of motion trajectories far away from the set of demonstrations is often limited by the dependency of the learned models on arbitrary coordinate references. Trajectory shape descriptors have the potential to remove these dependencies by representing demonstrated trajectories in a coordinate ...
Vochten, Maxim   +2 more
openaire   +2 more sources

Analysis of chaotic motion and its shape dependence in a generalized piecewise linear map [PDF]

open access: yesPhysical Review E, 2001
We analyse the chaotic motion and its shape dependence in a piecewise linear map using Fujisaka's characteristic function method. The map is a generalization of the one introduced by R. Artuso. Exact expressions for diffusion coefficient are obtained giving previously obtained results as special cases.
Rajagopalan, S., Sabir, M.
openaire   +8 more sources

Analysis of kinematic motion deviations of machining centers based on geometric tolerances

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The objectives of the present research are to investigate relationships between kinematic motion deviations of machine tools and geometric tolerances of their components, to propose mathematical models representing kinematic motion deviations of five ...
Atsushi TAKAHASHI   +5 more
doaj   +1 more source

MHD Modeling of Solar Coronal Magnetic Evolution Driven by Photospheric Flow

open access: yesFrontiers in Physics, 2021
It is well-known that magnetic fields dominate the dynamics in the solar corona, and new generation of numerical modeling of the evolution of coronal magnetic fields, as featured with boundary conditions driven directly by observation data, are being ...
Chaowei Jiang   +3 more
doaj   +1 more source

A comparison between simulation and experiment of virtual machining in CNC turning machine considering kinematic motion deviations, tool wear and workpiece deflection errors

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The virtual machining is one of the most important techniques to estimate the complex various machining parameters of machined parts before operating the real machining, in order to obtain the accuracy, precision and reliability.
Wiroj THASANA, Srisit CHIANRABUTRA
doaj   +1 more source

Biomechanical evaluation of a novel biomimetic artificial intervertebral disc in canine cervical cadaveric spines

open access: yesJOR Spine, 2023
Background Context Cervical disc replacement (CDR) aims to restore motion of the treated level to reduce the risk of adjacent segment disease (ASD) compared with spinal fusion.
Celien A. M. Jacobs   +9 more
doaj   +1 more source

Triboacoustic diagnostic fixed joints of machines

open access: yesMATEC Web of Conferences, 2018
The experimental results of the tribo-acoustic control in real time the integrity of nominally stationary friction joints under conditions of fretting are presented.
Dykha Aaleksandr, Matyukh Sergij
doaj   +1 more source

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