Search results for "PEI"
showing 10 items of 367 documents
Justice des Lumières et guillotine: un problème philosophique
2012
In "Justice during the Enlightenment and the Guillotine: a Philosophical Problem", Luigi Delia reconsiders the dispute over capital punishment in the France of the Ancien Regime, and especially Guillotin's proposed reform, linking the maintenance of the death penalty to the idea that the use of a mechanical device for its implementation works in favour of a more democratic, secular and humane penal system. Without attempting to establish a direct connection between the Enlightenment and the guillotine in an instrumental relationship of cause and effect, Luigi Delia raises the question of how the two phenomena are interrelated: in what way is the guillotine dependent on the legal culture of …
Frequency comb generation by electro-optic modulation and applications
2020
The work presented in this thesis relates the development of a dual frequency comb spectrometer based on the electro-optic modulation of a continuous wave laser, and its utilisation for spectroscopic applications in the near- and mid-infrared.Since their discovery in the 1960s, frequency combs have revolutionised the physics, especially in metrology but also in spectroscopy, which lead to the Nobel Prize in Physics in 2005. In this domain of applications, dual frequency comb spectrometers are known to be complex to develop and use. A possibility to bypass these constraints is to build the spectrometer with electro-optic modulators. This particular architecture makes the experimental setup e…
New theoretical and experimental concepts for frequency generation in optical fibers: modulation instability, pulsed Raman Laser and kinetic approach…
2009
Following a brief introduction to optical fibers, we combine the effect of modulational instability and Raman self-frequency shift to generate a frequency combs with a spectral width higher than 100 nm and a central frequency shifted towards higher wavelengths. Then, the stimulated Raman effect is used in a ring cavity coupled with nonlinear polarization rotation and polarization filtering. A pulsed regime is obtained at the wavelength of the first Stokes emission and presents a rich zoology of experimental dynamic pulsed regimes. A second main line of this manuscript considers the incoherent regime of supercontinuum generation. We show that under certain conditions, the spectral broadening…
Les revêtements architecturaux et leur(s) fonction(s) : pour une compréhension du décor des édifices gallo-romains de la cité des Éduens, des Lingons…
2015
Since the international colloquium organized in Toulouse in 2008, “ Decoration and architecture in Gaul, from Antiquity to Early Middle Ages : mosaic, wall-painting, stucco ”, the combine study of the antique architectural surfaces has been brought forward, which allowed to shed some new light on various aspects of the subject, particularly with regard to the function. To answer the question, the geographical area studied is composed of three bordering civitates where some important elements of decoration were discovered, from the first century B.-C. to the fifth century A.-C, from the beginning to the end of the Gallo-roman period. The architectural surfaces show first the adaptation of th…
Germolles’ palace wall paintings: an interdisciplinary project for the rediscovery of a unique 14th century decoration
2016
International audience
Ni stuc, ni peinture : un traitement illusionniste des enduits
2012
International audience
Inventaire des peintures murales gallo-romaines du lieu-dit « Deilly-Bas-des-Piats », à Villeperrot (Yonne), Musées de Sens-CEREP, Sens, 2013, 719 p.
2013
« L’épitaphe du pictor de Bourbon-Lancy (Saône-et-Loire) : une inscription funéraire gallo-romaine méconnue », Boislève J., Dardenay A. et Monier F. …
2016
International audience
Les supports de pinceaux doubles en bronze dans l'Antiquité : instruments de peinture ou de dorure ?
2015
International audience
La “peinture d’enseigne”, catégorie critique et lieu commun de la modernité
2012
International audience; L’enseigne commerciale peinte souffrit longtemps d’une réputation négative et fut assimilée à une image vulgaire, malhabile et grossièrement barbouillée. Dès le milieu du XIXe siècle, alors que la modernité urbaine était décryptée par la littérature, les flâneurs et les historiens de Paris, suivis des poètes et des écrivains, commencèrent à regarder cet objet primitif et barbare avec attention et curiosité, pour écrire son histoire et définir ses qualités visuelles et plastiques. Les critiques d’art se l’approprièrent à leur tour pour en faire une catégorie critique qui servit à juger les excès et les audaces de la peinture moderne de Courbet à Manet, puis des impres…