Search results for "classical"

showing 10 items of 2294 documents

Scaling laws for inelastic collision processes in diatomic molecules

1991

International audience

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]Scaling law[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]010304 chemical physicsChemistryGeneral EngineeringInelastic collision010402 general chemistry01 natural sciencesDiatomic molecule0104 chemical sciencesClassical mechanics0103 physical sciencesPhysical and Theoretical ChemistryAtomic physicsComputingMilieux_MISCELLANEOUS
researchProduct

Coupled experiment/simulation approach for the design of radiation-hardened rare-earth doped optical fibers and amplifiers

2011

We developed an approach to design radiation-hardened rare earth -doped fibers and amplifiers. This methodology combines testing experiments on these devices with particle swarm optimization (PSO) calculations. The composition of Er/Yb-doped phosphosilicate fibers was improved by introducing Cerium inside their cores. Such composition strongly reduces the amplifier radiation sensitivity, limiting its degradation: we observed a gain decreasing from 19 dB to 18 dB after 50 krad whereas previous studies reported higher degradations up to 0°dB at such doses. PSO calculations, taking only into account the radiation effects on the absorption efficiency around the pump and emission wavelengths, co…

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]YtterbiumOptical fiberMaterials scienceAstrophysics::High Energy Astrophysical PhenomenaRadiation effectschemistry.chemical_elementradiation effects optical fibers rare-earth ions amplifiers particle swarm optimization erbium ytterbiumRadiation7. Clean energy01 natural scienceslaw.invention010309 opticsErbiumOpticslaw0103 physical sciencesOptical fibersFiberIrradiationYtterbiumrare-earth ions[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]particle swarm optimization010308 nuclear & particles physicsbusiness.industryAmplifierAttenuationOptique / photoniquePhysics::Classical PhysicschemistryamplifiersbusinessErbium2011 12th European Conference on Radiation and Its Effects on Components and Systems
researchProduct

Optical bullets and "rockets" in nonlinear dissipative systems and their transformations and interactions

2006

We demonstrate the existence of stable optical light bullets in nonlinear dissipative media for both cases of normal and anomalous chromatic dispersion. The prediction is based on direct numerical simulations of the (3+1)-dimensional complex cubic-quintic GinzburgLandau equation. We do not impose conditions of spherical or cylindrical symmetry. Regions of existence of stable bullets are determined in the parameter space. Beyond the domain of parameters where stable bullets are found, unstable bullets can be transformed into >rockets> i.e. bullets elongated in the temporal domain. A few examples of the interaction between two optical bullets are considered using spatial and temporal interact…

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]ultrafast nonlinear opticsPhysics::Medical PhysicsParameter space01 natural sciencesDomain (mathematical analysis)010309 opticsPhysics::Popular PhysicsOptics0103 physical sciencesDispersion (optics)010306 general physicsNonlinear Sciences::Pattern Formation and SolitonsComputingMilieux_MISCELLANEOUSpulse propagation and solitonsPhysics[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]Computer simulationbusiness.industryNonlinear opticsAtomic and Molecular Physics and OpticsSymmetry (physics)Nonlinear systemClassical mechanicsDissipative systembusiness
researchProduct

Etude des effets collisionnels dans les molécules tétraédriques. Applications au méthane perturbé par l'argon

1996

This thesis is devoted to the study of relaxational and collisional line-broadening processes in the first vibrational polyads of tetrahedral molecules. In a first part, the particular internal dynamics of such molecules is discussed. The second chapter reviews the literature on phenomena induced by intermolecular interactions involving this type of molecules. More theoretical aspects are developed in the second part. The so-called tetrahedral tensorial formalism adapted to the construction of Hamiltonians and transition moments of tetrahedral molecules is described. Main features of the infrared line-shapes theories and of semi-classical line-broadening and line-shifting calculations are a…

[PHYS]Physics [physics]Symétrie tétraédriqueCollisional broadeningMéthaneRelaxation rotationnelle[ PHYS ] Physics [physics]Formalisme tensorielRotational relaxationTetrahedral symmetryTensorial formalismSélectivité[PHYS] Physics [physics]Modèle semi-classiqueSelectivityArgonSemi-classical modelElargissement collisionnel
researchProduct

Polivalenze funzionali e figurative. Osservazioni su Zeus Meilichios

2006

International audience; Le culte de Zeus Meilichios fournit un champ d’observation particulièrement approprié pour discuter de la pluralité problématique des représentations des dieux dans le polithéisme grec, qu’il s’agisse de figurations anthropomorphiques ou zoomorphiques ou bien du soi-disant « aniconisme ». Dieu bienveillant, présent dans toutes les aires du monde grec et sur une très longue période, Zeus Meilichios opère dans un espace symbolique et social de médiation. Il exerce également un rôle essentiel de charnière entre les dimensions du public et du privé, afin de reconstituer un tissu politique et social continuellement exposé à des déchirures (le cas de la stasis d’Argo et de…

[SHS.ANTHRO-SE]Humanities and Social Sciences/Social Anthropology and ethnology[SHS.HIST]Humanities and Social Sciences/Historypoliteismo rappresentazione figurativa pubblico/privato purificazione soteria[SHS.CLASS]Humanities and Social Sciences/Classical studies
researchProduct

Roman Women e Public History: la creatività del Web

2018

Partendo dal dibattito sviluppatosi negli USA alla metà degli Anni Settanta sulla condizione femminile nel mondo antico, l’articolo sottolinea che ha contribuito a dare una lettura articolata dell’immagine delle donne romane. Ciò ha inciso non solo sulla storiografia posteriore, bensì oltre, come si ricava da alcuni recenti video YouTube sulle Roman Women, rinvenibili in rete. Essi mostrano la creatività dei loro autori, i loro diversi livelli di conoscenza e capacità tecniche. D’altro lato, proiettano lo spettatore nella vita quotidiana delle donne dell’antica Roma. In tal senso, questo genere di produzione può essere considerato un ottimo esempio di Public History applicata e risultare ef…

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory5. Gender equality[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory[SHS.CLASS] Humanities and Social Sciences/Classical studieslcsh:History (General)16. Peace & justicelcsh:Women. Feminismlcsh:D1-2009[SHS.CLASS]Humanities and Social Sciences/Classical studieslcsh:HQ1101-2030.7ComputingMilieux_MISCELLANEOUSPublic History storia romana storia di genere Sarah Pomeroy donne romane Public History Roman history gender history Sarah Pomeroy Roman Women
researchProduct

Points de vue en images sur la femme et l’enfant dans l’art grec

2017

International audience

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and PrehistoryMéthodologie[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and PrehistoryArt grecRelief funéraire[SHS.ART] Humanities and Social Sciences/Art and art history[SHS.CLASS] Humanities and Social Sciences/Classical studies[SHS.ART]Humanities and Social Sciences/Art and art history[SHS.CLASS]Humanities and Social Sciences/Classical studiesComputingMilieux_MISCELLANEOUSIconographie
researchProduct

Oedenburg, rapport 2011

2011

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[ SHS.HIST ] Humanities and Social Sciences/History[ SHS.CLASS ] Humanities and Social Sciences/Classical studies[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory[ SHS.ARCHEO ] Humanities and Social Sciences/Archaeology and Prehistory[SHS.HIST] Humanities and Social Sciences/History[SHS.CLASS] Humanities and Social Sciences/Classical studies[SHS.HIST]Humanities and Social Sciences/History[SHS.CLASS]Humanities and Social Sciences/Classical studies
researchProduct

Deux tombes féminines, atypiques et privilégiées de la nécropole du Bas-Empire d'Arcis-sur-Aube (Champagne-Ardenne)

2017

International audience; En 2002, une nécropole a été partiellement fouillée au sud de la commune d’Arcis-sur-Aube (Aube, Champagne-Ardenne). Cette opération a permis d’exhumer vingt-deux tombes datées entre la fin du IIIe et le milieu du IVe siècle. Malgré des pratiques de dépôt partagées par la plupart des défunts, deux tombes se distinguent. Ces deux fosses, aménagées avec un double coffrage, accueillent deux défuntes qui possèdent des dépôts très similaires. La qualité des dépôts, leur disposition dans la fosse, ainsi que la proximité des creusements, signalent une volonté du groupe de mettre en exergue ces deux femmes. De plus, une particularité dentaire encourage à voir entre elles un …

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory[SHS.ANTHRO-BIO]Humanities and Social Sciences/Biological anthropology[ SHS.ART ] Humanities and Social Sciences/Art and art history[SHS.ART]Humanities and Social Sciences/Art and art history[SHS.ANTHRO-BIO] Humanities and Social Sciences/Biological anthropologyarchitecture funéraire[ SHS.CLASS ] Humanities and Social Sciences/Classical studies[ SHS.ARCHEO ] Humanities and Social Sciences/Archaeology and Prehistorydépôts[ SHS.ANTHRO-BIO ] Humanities and Social Sciences/Biological anthropologyNécropole[SHS.ART] Humanities and Social Sciences/Art and art history[SHS.CLASS] Humanities and Social Sciences/Classical studiesBas-Empire[SHS.CLASS]Humanities and Social Sciences/Classical studies
researchProduct

Le transport terrestre durant l’Antiquité entre Langres/Andematunum, Besaçon/Vesontio et Chalon-sur-Saône/Cabillonum : attelage et véhicule

2021

International audience

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory[SHS.ART] Humanities and Social Sciences/Art and art history[SHS.CLASS] Humanities and Social Sciences/Classical studies[SHS.ART]Humanities and Social Sciences/Art and art history[SHS.CLASS]Humanities and Social Sciences/Classical studiesComputingMilieux_MISCELLANEOUS
researchProduct