Typologie des innovations de service dans l’hôtellerie

International audienceInnovation also relates to the hospitality industry which could seem a traditional sector. For hotels, innovating is a way to differentiate themselves in the market. This paper aims to establish a classification of innovations in the hospitality industry. On the basis of the analysis of 100 innovations, a new typology of service with five classes is proposed for the hospitality industry.L’innovation concerne aussi l’industrie hôtelière qui peut paraître un secteur traditionnel. Innover est un moyen pour les hôtels de se différencier de la concurrence. Cette communication vise à établir une classification des innovations dans l’hôtellerie. À partir de l’analyse de 100 innovations, une nouvelle typologie des innovations de service adaptées à l’hôtellerie est proposée comptant cinq catégories

Gestion des jeunes du Semestre de Motivation de Monthey

L’objectif principal de ce travail est l’implémentation d’un système permettant la gestion des informations des jeunes ainsi que la génération des documents nécessaires à la bonne marche de l’administration pour le SEMO situé à Monthey. Cette partie va permettre de répondre aux besoins croissants en gain de temps et d’efficacité pour permettre aux divers acteurs de se consacrer d’avantage à l’aspect relationnel avec les jeunes

Energy dissipation in graphene field-effect transistors

We measure the temperature distribution in a biased single-layer graphene transistor using Raman scattering microscopy of the 2D-phonon band. Peak operating temperatures of 1050 K are reached in the middle of the graphene sheet at 210 KW cm^(-2) of dissipated electric power. The metallic contacts act as heat sinks, but not in a dominant fashion. To explain the observed temperature profile and heating rate, we have to include heat-flow from the graphene to the gate oxide underneath, especially at elevated temperatures, where the graphene thermal conductivity is lowered due to umklapp scattering. Velocity saturation due to phonons with about 50 meV energy is inferred from the measured charge density via shifts in the Raman G-phonon band, suggesting that remote scattering (through field coupling) by substrate polar surface phonons increases the energy transfer to the substrate and at the same time limits the high-bias electronic conduction of graphene.Comment: The pdf-file contains the main manuscript (19 pages, 3 figures) and the supplement (5 pages, 4 figures

Towards Confidence Measures on Fundamental Frequency Estimations

International audienceThe fundamental frequency is one of the prosodic parameters , and many algorithms have been developed for estimating the fundamental frequency of speech signals. Most of them provide good results on good quality speech signals, but their performance degrades when dealing with noisy signals. Moreover, although some provide a probability for the voicing decision, none of them indicate how reliable the estimated fundamental frequency is. In this paper, we investigate the computation of a confidence (or reliability) measure on the estimated fundamental frequency values. A neural network based approach is proposed for computing the posterior probability that the estimated fundamental frequency is correct. Experiments are conducted on the PTDB-TUG pitch-tracking database, using three fundamental frequency estimation algorithms