Questions méthodologiques et nouveaux projets pour Inscriptions of Libya

This paper presents several aspects of the Inscriptions of Libya (InsLib) project currently developed in France, Italy and Great Britain. It aims at publishing online with free access the inscriptions of ancient Libya and other resources related to them. The Italian-French team has the responsibility of the edition, in EpiDoc format, of both the Greek inscriptions of the pre-Roman period (IG Cyrenaica) and the verse-inscriptions of all periods (IG Cyrenaica Verse), as well as the related archival material and prosopography. After having explained the history and methodology of the project, each of the four authors clarifies a problem related to his/her own work. Author 1 explains the method chosen for gathering and classifying the bibliographical items. As the digital edition offers multilingual translations, Author 2 considers what kind of translation can be the most faithful and useful online for all types of users. Author 3 presents the project concerning the digitization of the squeezes of the inscriptions. Author 4 explains how he is currently completing the late André Laronde’s  Prosopographia Cyrenaica which remains hitherto unpublished. He then outlines the methodology that should be used for launching it online and connecting it with other projects that are currently developed.Questo articolo presenta alcuni aspetti relativi al progetto Inscriptions of Libya (InsLib) sviluppato in Francia, Italia e Gran Bretagna e dedicato alla pubblicazione online ad accesso libero delle iscrizioni della Libia antica e di altre risorse ad esse correlate. Il gruppo italo-francese ha la responsabilità dell'edizione, in formato EpiDoc, sia delle iscrizioni del periodo preromano (IG Cyrenaica) sia delle iscrizioni metriche di tutte le epoche (IG Cyrenaica Verse), come pure dei relativi materiali d'archivio e prosopografia. Dopo un breve quadro sulla storia e sulla metodologia del progetto, ognuno dei quattro autori del contributo illustra un tema correlato al suo lavoro. Autore 1 spiega il metodo scelto per raccogliere e classificare la bibliografia. Dato che l'edizione digitale offre traduzioni in più lingue moderne, Autore 2 riflette sulle modalità di traduzione delle iscrizioni in relazione alla pubblicazione online e al pubblico eterogeneo degli utenti. Autore 3 presenta il progetto relativo alla digitalizzazione dei calchi delle iscrizioni. Autore 4 spiega come stia completando la Prosopographia Cyrenaica del compianto André Laronde che rimane ad oggi inedita, evidenziando la metodologia che dovrebbe essere utilizzata per la pubblicazione online, anche in connessione con altri progetti in corso.&nbsp

Temperature dependence of the zero-phonon linewidth in quantum dots: An effect of the fluctuating environment

We report systematic measurements on the broadening of the emission spectrum of single quantum dots as a function of temperature and incident power. Spectral diffusion effects in the motional narrowing regime provide a quantitative interpretation of our experimental results. We show that, at low incident power, the thermal activation of spectral diffusion results in a Lorentzian zero-phonon line with a width that increases linearly with temperature. Our study provides a unified interpretation to the widely debated issue of the dispersion of the data on the temperature dependence of this zero-phonon linewidth. Our explanation is based on an original model where acoustic phonons interact with carriers outside the quantum dot

The Nordic back pain subpopulation program: Can low back pain patterns be predicted from the first consultation with a chiropractor? A longitudinal pilot study

<p>Abstract</p> <p>Background</p> <p>It is widely believed that non-specific low back pain (LBP) consists of a number of subgroups which should be identified in order to improve treatment effects. In order to identify subgroups, patient characteristics that relate to different outcomes are searched for. However, LBP is often fluctuating or recurring rather than clearly limited in time. Therefore it would be relevant to consider outcome after completed treatment from a longitudinal perspective (describing "course patterns") instead of defining it from an arbitrarily selected end-point.</p> <p>Aims</p> <p>The objectives of this pilot study were to investigate the interobserver reliability of a diagnostic classification system and to evaluate whether diagnostic classes or other baseline characteristics are associated with the LBP course pattern over a period of 18 weeks.</p> <p>Methods</p> <p>Patients visiting one of 7 chiropractors because of LBP were classified according to a diagnostic classification system, which includes end-range loading, SI-joint pain provocation tests, neurological examination and tests for muscle tenderness and abnormal nerve tension. In addition, age, gender, duration of pain and presence of leg pain were registered in the patient's file. By weekly SMS-messages on their mobile phones, patients were asked how many days they had LBP the preceding week, and these answers were transformed into pain course patterns and the total number of LBP days.</p> <p>Results</p> <p>A total of 110 patients were included and 76 (69%) completed follow-up. Thirty-five patients were examined by two chiropractors. The agreement regarding diagnostic classes was 83% (95% CI: 70 - 96). The diagnostic classes were associated with the pain course patterns and number of LBP days. Patients with disc pain had the highest number of LBP days and patients with muscular pain reported the fewest (35 vs. 12 days, p < 0.01). Men had better outcome than women (17 vs. 29 days, p < 0.01) and patients without leg pain tended to have fewer LBP days than those with leg pain (21 vs.31 days, p = 0.06). Duration of LBP at the first visit was not associated with outcome.</p> <p>Conclusions</p> <p>The study indicated that there is a clinically meaningful relationship between diagnostic classes and the course of LBP. This should be evaluated in more depth.</p

Diffusion spectrale et rétrécissement par le mouvement dans les boîtes quantiques

The subject of this thesis is spectral diffusion in quantum dots. Created by fluctuations in the electrostatic environment, spectral diffusion affects the emission spectra of these quantum boxes. Our study is based on the analysis of the temperature and the pump power dependence of the photoluminescence spectra, obtained by Fourier transform spectroscopy. We show that the spectral diffusion is generally in the regime of motional narrowing et can exit this regime by an increase in the temperature or pumping power. By these investigations, we probe the mechanisms which are at the origin of electrostatic environmental fluctuations. This allows us to propose a microscopic model for a spectral diffusion source. The model permits the proposition of a protocol to control and amplify the motional narrowing by using an external electric field. This protocol is verified by the final experimental part of this manuscript.Cette thèse a pour sujet la diffusion spectrale dans les boîtes quantiques. Engendrée par les fluctuations de l'environnement électrostatique, elle affecte les spectres d'émission de ces boîtes. Notre étude s'appuie sur l'analyse de l'évolution en température et en puissance de pompage des spectres de photoluminescence, obtenus par spectrométrie par transformée de Fourier. Nous constatons que la diffusion spectrale est généralement dans un régime de rétrécissement par le mouvement et peut sortir de ce régime pour une augmentation de température ou de puissance. Par cette étude, nous sondons les mécanismes à l'origine des fluctuations de l'environnement électrostatique. Ceci nous permet de proposer un modèle microscopique pour les sources de la diffusion spectrale. A l'aide de cette modélisation, nous avons pu imaginer un protocole de contrôle et d'amplification du rétrécissement par le mouvement en utilisant un champ électrique. Cette méthode est alors validée par nos résultats

Diffusion spectrale et rétrécissement par le mouvement dans les boîtes quantiques

Cette thèse a pour sujet la diffusion spectrale dans les boîtes quantiques. Engendrée par les fluctuations de l'environnement électrostatique, elle affecte les spectres d'émission de ces boîtes. Notre étude s'appuie sur l'analyse de l'évolution en température et en puissance de pompage des spectres de photoluminescence, obtenus par spectrométrie par transformée de Fourier. Nous constatons que la diffusion spectrale est généralement dans un régime de rétrécissement par le mouvement et peut sortir de ce régime pour une augmentation de température ou de puissance. Par cette étude, nous sondons les mécanismes à l'origine des fluctuations de l'environnement électrostatique. Ceci nous permet de proposer un modèle microscopique pour les sources de la diffusion spectrale. A l'aide de cette modélisation, nous avons pu imaginer un protocole de contrôle et d'amplification du rétrécissement par le mouvement en utilisant un champ électrique. Cette méthode est alors validée par nos résultatsThe subject of this thesis is spectral diffusion in quantum dots. Created by fluctuations in the electrostatic environment, spectral diffusion affects the emission spectra of these quantum boxes. Our study is based on the analysis of the temperature and the pump power dependence of the photoluminescence spectra, obtained by Fourier transform spectroscopy. We show that the spectral diffusion is generally in the regime of motional narrowing et can exit this regime by an increase in the temperature or pumping power. By these investigations, we probe the mechanisms which are at the origin of electrostatic environmental fluctuations. This allows us to propose a microscopic model for a spectral diffusion source. The model permits the proposition of a protocol to control and amplify the motional narrowing by using an external electric field. This protocol is verified by the final experimental part of this manuscriptPARIS-BIUSJ-Physique recherche (751052113) / SudocSudocFranceF

Motionnal narrowing in a single semiconductor quantum dot

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Phénomène de rétrécissement par le mouvement dans les boites quantiques InAs/GaAs

posterInternational audienceLes boîtes quantiques de semiconducteurs sont des nanostructures à l'intérieur desquelles le confinement tridimensionnel des porteurs conduit à une discrétisation des niveaux d'énergie. Cette discrétisation limite a priori le couplage entre les porteurs confinés dans la boîte et l'environnement extérieur. Dans une expérience de photoluminescence, des paires électron-trou sont créées de manière non-résonante à l'aide d'une excitation lumineuse et après relaxation des porteurs dans la boîte quantique, la recombinaison d'une paire électron-trou conduit à l'émission d'un photon. L'étude du spectre d'émission permet d'étudier le couplage de la boîte quantique à l'environnement et dans l'hypothèse où ce couplage est négligeable, on s'attend à des temps de décohérence très longs voisins du temps de vie radiatif. Pourtant les expériences montrent que la raie de la photoluminescence d'une boîte quantique unique a une largeur plus grande que la largeur naturelle, ce qui montre l'existence d'un couplage même dans le régime des basses températures. Dans nos expériences nous avons étudié les profils de raie de photoluminescence de boîte quantique unique InAs/GaAs par spectroscopie par transformée de Fourier à très haute résolution spectrale. Dans ma présentation je montrerai nos derniers résultats sur le phénomène de diffusion spectrale. L'étude de l'élargissement en température et en puissance de la raie de photoluminescence de boîte unique montre une transition entre des profils de raie lorentzien et gaussien, que nous interprétons à l'aide d'un mécanisme de rétrécissement par le mouvement très original

Motionnal narrowing in a semiconductor quantum dot

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