Search results for "VIBRATION"

showing 10 items of 823 documents

U(p+1) : Application aux états moléculaires très excités.

2004

International audience

[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]Vibrational SpectraLie AlgebraComputingMilieux_MISCELLANEOUS[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
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Algebraic Hamiltonian Adapted to Strech-Bend Coupling in the Stibine Molecule.

2003

[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]XY3 MoleculesVibrational SpectraLie Algebra[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
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Analysis of highly excited 'hot' bands in the SO2 molecule: ν2 + 3ν3 - ν2 and 2ν1 + ν2 + ν3 - ν2

2010

International audience; We set up a variational procedure of assignments of transitions and we applied it to the analysis very weak 'hot' bands, v(2) + 3v(3) - v(2) and 2v(1) + v(2) + v(3) - v(2), of the SO2 molecule. As the first step of the study, the 'cold' bands, 3v(3) and 2v(1) + v(3), are re-analysed and transitions belonging to those bands are assigned up to the values of quantum numbers J(max.) = 60, K-a(max.) = 19, and J(max.) = 69, K-a(max.) = 20 for the bands 3v(3) and 2v(1) + v(3), respectively. After 'cleaning' the experimental spectrum from transitions belonging to the 3v(3) and 2v(1) + v(3) bands, a variational procedure was used that allowed us to assign 230 and 115 transiti…

[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]high-resolution spectraHIGH-RESOLUTION ANALYSISBiophysics02 engineering and technology01 natural sciences[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]0103 physical sciencesMoleculespectroscopic parametersHigh resolution spectraPhysical and Theoretical ChemistrySpectroscopyLASER SPECTROSCOPYMolecular BiologyHigh resolution analysis010304 chemical physicsChemistryCOMBINATION BAND021001 nanoscience & nanotechnologyCondensed Matter PhysicsQuantum numberNU-3 BANDINTENSITIESSULFUR-DIOXIDEExcited stateLINE POSITIONSVIBRATIONAL-STATESsulphur dioxideEQUILIBRIUM ROTATIONAL-CONSTANTSAtomic physics0210 nano-technologySUBMILLIMETER-WAVE SPECTRUM
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Périphérique d'interaction apte à contrôler un élément de toucher et de préhension d'objets virtuels multidimensionnels

2012

Ne pas le transférer sur HAL (déjà déposé sur HAL par le co-auteur (hors ENSAM)) L’invention concerne un périphérique d’interaction (1) apte à contrôler un élément de toucher et de préhension d’objets virtuels multidimensionnels, comportant au moins deux modules d’interaction (20), chaque module d’interaction (20) étant destiné à être actionné par un doigt d’un opérateur et comportant un capteur de commande permettant de commander un déplacement, selon un nombre de degrés de liberté prédéterminé, d’une partie de l’élément de toucher et de préhension d’objets virtuels par déplacement en flexion/extension et/ou adduction/abduction du doigt de l’opérateur, et un vibreur apte à émettre une vibr…

[ SPI.MECA.GEME ] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph][ INFO.INFO-HC ] Computer Science [cs]/Human-Computer Interaction [cs.HC]Amortissement de vibrationsInterface homme-machine [Informatique][PHYS.MECA.GEME] Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph][ PHYS.MECA.GEME ] Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph][PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph][INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC][INFO.INFO-HC] Computer Science [cs]/Human-Computer Interaction [cs.HC][SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]Périphérique d'interactionRetour d'effort[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
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Effet d’une perturbation haute fréquence sur la réponse du système de FitzHugh-Nagumo soumis à une excitation basse fréquence subliminale : simulatio…

2015

National audience; Dans cette communication, nous menons conjointement une étude en simulation numérique ainsi qu’une étude expérimentale de la réponse du système de FitzHugh-Nagumo soumis à une excitation bi-chromatique. Cette excitation est constituée d’un signal basse fréquence perturbé par une composante haute fréquence additive. Selon l’amplitude B de la perturbation haute fréquence, la réponse du système peut être optimisée à la basse fréquence. Un choix approprié du rapport des fréquences d’excitations peut conduire à une meilleure optimisation de la réponse du système.

[NLIN.NLIN-CD] Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD][NLIN.NLIN-PS]Nonlinear Sciences [physics]/Pattern Formation and Solitons [nlin.PS][NLIN.NLIN-PS] Nonlinear Sciences [physics]/Pattern Formation and Solitons [nlin.PS][ NLIN.NLIN-CD ] Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD][NLIN.NLIN-CD]Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD]système neuronaux[ NLIN.NLIN-PS ] Nonlinear Sciences [physics]/Pattern Formation and Solitons [nlin.PS][SPI.TRON] Engineering Sciences [physics]/ElectronicsResonance Vibrationnel[ SPI.TRON ] Engineering Sciences [physics]/Electronics[SPI.TRON]Engineering Sciences [physics]/Electronics
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The Influence of the feedback control of the hexapod platform of the SAAM dynamic driving simulator on neuromuscular dynamics of the drivers

2012

Multi sensorial cues (visual, auditory, haptic, inertial, vestibular, neuromuscular) [Ang2] play important roles to represent a proper sensation (objectively) and so a perception (subjectively as cognition) in driving simulators. Driving simulator aims at giving the sensation of driving as in a real case. For a similar situation, the driver has to react in the same way as in reality in terms of ‘self motion’. To enable this behavior, the driving simulator must enhance the virtual immersion of the subject in the driving situation. The subject has to perceive the motion of his own body in the virtual scene of the virtual car as he will have in a real car. For that reason, restituting the iner…

[PHYS.MECA.VIBR] Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]Base de données [Informatique]Motion cueingModélisation et simulation [Informatique]Mécanique: Vibrations [Sciences de l'ingénieur]optimal controlAutomatique [Informatique]Robotique [Informatique][INFO.INFO-DB] Computer Science [cs]/Databases [cs.DB]EMG analysisdynamic driving simulatorsLQR[INFO.INFO-RB] Computer Science [cs]/Robotics [cs.RO]open loop control[MATH.MATH-OC] Mathematics [math]/Optimization and Control [math.OC]Optimisation et contrôle [Mathématique]motion sicknessInterface homme-machine [Informatique][SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph]motion cue[INFO.INFO-MO] Computer Science [cs]/Modeling and Simulation[INFO.INFO-HC] Computer Science [cs]/Human-Computer Interaction [cs.HC][INFO.INFO-AU] Computer Science [cs]/Automatic Control EngineeringMotion cueing motion sickness LQR optimal control EMG analysis dynamic driving simulatorsclosed loop control
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Comportement vibratoire des plaques microperforées finies

2022

Les plaques microperforées sont utilisées dans l’industrie pour leurs propriétés d’absorption acoustique. Ces structures légères, de par des échanges dans les couches limites visqueuses et thermiques près de l’interface fluide-structure, permettent l’absorption des ondes acoustiques. Il est montré dans ce travail que ces structures peuvent également induire un amortissement supplémentaire significatif particulièrement pour les basses fréquences. Ces solutions sans ajout de masse peuvent être un complément ou une alternative aux matériaux viscoélastiques couramment utilisés pour amortir les vibrations en moyennes et hautes fréquences.Ainsi il est proposé dans ce projet d’étudier les effets d…

[PHYS.MECA.VIBR] Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph][SPI] Engineering Sciences [physics][SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph][SPI.MAT] Engineering Sciences [physics]/Materials[SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
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Vibrating temporal soliton pairs

2007

The study of temporal multisoliton complexes in dissipative systems is of potential interest for the development of new schemes of optical data transport and processing. In the present work, we thus consider pulsations of a soliton pair that consist mainly in the oscillations of the temporal separation and phase relationship between the two pulses, so that the relative motion of the two bound solitons resembles a vibrational motion.

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]Physics[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]3D optical data storageWork (thermodynamics)[ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]Computer simulation01 natural sciences010309 opticsVibrationDissipative solitonNonlinear Sciences::Exactly Solvable and Integrable SystemsClassical mechanicsMode-locking0103 physical sciencesDissipative systemSoliton010306 general physicsNonlinear Sciences::Pattern Formation and SolitonsComputingMilieux_MISCELLANEOUS
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Femtosecond Raman time-resolved molecular spectroscopy

2004

International audience; The applicability of several femtosecond time resolved non-linear coherent techniques such as Raman induced polarization spectroscopy (RIPS), degenerate four-wave mixing (DFWM) and coherent anti-Stokes Raman spectroscopy (CARS) for molecular spectroscopy is presented. All methods rely on the initial coherent excitation of molecular states producing wavepackets, whose time evolution is then measured. In the case of RIPS and DFWM only pure rotational transitions are involved, whereas in CARS vibrational states can be excited. First the methodology of concentration and temperature measurements using RIPS in gas mixtures involving N2, CO2, O2, and N2O is shown. In additi…

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics][PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]Femtosecond laser; Ultrafast phenomena; Non-linear coherent and time resolved spectroscopy; Rovibrational wavepacket; Thermometry[ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]
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Background-free nonlinear Raman microscopy and spectroscopy at interfaces

2010

Gaussian focused beams exhibit specific properties that drive the emitted fields in nonlinear optical microscopy. We discuss here how the basic field and object symmetry properties can be favorably used to obtain background-free images and spectra in third-order nonlinear optical processes. We concentrate here on coherent anti-Stokes Raman scattering (CARS), the non-linear analogue of Raman scattering. In CARS microscopy, the vibrational related (“resonant”) signal is often overwhelmed by an electronic related (“nonresonant”) background. Various strategies have been implemented to circumvent the undesirable effects of this nonresonant background: picosecond pulse excitation, time resolved, …

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics][PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]non-linear vibrational microscopyinterferometry
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