Results 31 to 40 of about 8,599,824 (330)
On Unification of Gravity and Gauge Interactions [PDF]
, 2016 Considering a higher dimensional Lorentz group as the tangent symmetry, we unify gravity and gauge interactions in a natural way. The spin connection of the gauged Lorentz group is then responsible for both gravity and gauge fields, and the action for ...
Chamseddine, Ali H. +1 more
core +2 more sources
Design of Passive Constant-Force End-Effector for Robotic Polishing of Optical Reflective Mirrors
Chinese Journal of Mechanical Engineering, 2022 Polishing plays an indispensable role in optical processing, especially for large-aperture optical reflective mirrors with freeform surfaces. Robotic polishing requires effective control of the contact force between the robot and the mirror during ...
Jian Zhang +4 more
doaj +1 more source
Self-induced frequency scanning and distributed Bragg reflection in semiconductor lasers with phase-conjugate feedback [PDF]
, 1986 A GaAlAs semiconductor laser with feedback from a barium titanate photorefractive ring passive phase-conjugate mirror can be made to perform repeating or nonrepeating frequency scans over a 10-nm range toward either the blue or the red.
Cronin-Golomb, Mark, Yariv, Amnon
core +1 more source
Skyrmion crystals in centrosymmetric itinerant magnets without horizontal mirror plane
Scientific Reports, 2021 We theoretically investigate a new stabilization mechanism of a skyrmion crystal (SkX) in centrosymmetric itinerant magnets with magnetic anisotropy. By considering a trigonal crystal system without the horizontal mirror plane, we derive an effective ...
Ryota Yambe, S. Hayami
semanticscholar +1 more source
Mirror Fermions in Noncommutative Geometry [PDF]
, 1997 In a recent paper we pointed out the presence of extra fermionic degrees of freedom in a chiral gauge theory based on Connes Noncommutative Geometry. Here we propose a mechanism which provides a high mass to these mirror states, so that they decouple ...
F. LIZZI +4 more
core +2 more sources
Neural Mechanism for Mirrored Self-face Recognition [PDF]
Cerebral Cortex, 2014 Self-face recognition in the mirror is considered to involve multiple processes that integrate 2 perceptual cues: temporal contingency of the visual feedback on one's action (contingency cue) and matching with self-face representation in long-term memory (figurative cue).
Sugiura, Motoaki +10 more
openaire +2 more sources
Mirror Neuron Activity During Audiovisual Appreciation of Opera Performance
Frontiers in Psychology, 2021 Opera is a performing art in which music plays the leading role, and the acting of singers has a synergistic effect with the music. The mirror neuron system represents the neurophysiological mechanism underlying the coupling of perception and action ...
Shoji Tanaka
doaj +1 more source
Frontiers in NeurologyIntroductionVia mirror mechanism, motor training approaches based on the alternation of action observation and execution (i.e., Action Observation Training-AOT) promote the acquisition of motor abilities.
Simone Paolini +12 more
doaj +1 more source
BMC Neurology, 2022 Background Upper limb motor dysfunction is a common sequela of stroke, and its clinical efficacy needs to be improved. This protocol describes a trial to verify the clinical efficacy of robot-assisted virtual reality mirror therapy (RAVRMT) in improving ...
Dong Wei +4 more
doaj +1 more source
Action observation and execution network : an extended view [PDF]
, 2018 The mirror mechanism is a basic mechanism that transforms sensory representations of others' behaviours into one's own motor or visceromotor representations concerning that behaviour.
Marzio, Gerbella +2 more
core +1 more source