2,627 research outputs found

    La mobilité des patients et les modÚles de création de demande : le cas du Québec

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    Dans ce texte nous analysons les consĂ©quences de l’inĂ©galitĂ© dans la distribution des ressources mĂ©dicales sur l’utilisation des interventions chirurgicales Ă©lectives en tenant compte de la mobilitĂ© des patients. AprĂšs avoir prĂ©sentĂ© un modĂšle thĂ©orique qui permet d’analyser l’influence de la mobilitĂ© des patients dans un marchĂ© privĂ© d’interventions chirurgicales, nous adaptons ce modĂšle Ă  un contexte d’assurance-maladie gĂ©nĂ©ralisĂ©e. Dans la partie empirique de notre travail nous discutons briĂšvement des principaux rĂ©sultats que l’on retrouve dans la littĂ©rature et nous prĂ©sentons quelques rĂ©sultats empiriques prĂ©liminaires en utilisant des donnĂ©es du QuĂ©bec.In this paper, we analyse the effects of the inequality in the distribution ofmedical resources on the use of elective surgeries taking into account the mobilityof the patients between geographical areas. In the first part of the paper, wepresent a theoretical model which analyses the effects of patients' mobility on aprivate market of chirurgical services and, then, we adapt this model to a regime ofpublic health insurance. In the empirical part of the paper, we discuss shortly themain results in the literature and we present some preliminary results using datafrom the province of Quebec

    RÎle des conditions pédoclimatiques sur la présence d'une savane en milieu forestier tropical africain : cas de la savane de Dabou (CÎte-d'Ivoire)

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    La rĂ©gion de Dabou a longtemps Ă©tĂ© caractĂ©risĂ©e par la prĂ©sence d'une savane, vĂ©gĂ©tation inhabituelle dans cette zone subĂ©quatoriale humide Ă  forĂȘt sempervirente. Les Ă©tudes rĂ©alisĂ©es derniĂšrement montrent que cette rĂ©gion se distingue non seulement par sa vĂ©gĂ©tation, mais Ă©galement par une organisation de la couverture pĂ©dologique en rapport avec un paysage (modelĂ©, rĂ©seau hydrographique) caractĂ©ristique de zones plus sĂšches. Le facteur permettant d'expliquer le maintien de la savane jusqu'Ă  une Ă©poque rĂ©cente est avant tout d'ordre pĂ©doclimatique. (RĂ©sumĂ© d'auteur

    La mobilité des patients et les modÚles de création de demande : le cas du Québec

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    In this paper, we analyse the effects of the inequality in the distribution of medical resources on the use of elective surgeries taking into account the mobility of the patients between geographical areas. In the first part of the paper, we present a theoretical model which analyses the effects of patients' mobility on a private market of chirurgical services and, then, we adapt this model to a regime of public health insurance. In the empirical part of the paper, we discuss shortly the main results in the literature and we present some preliminary results using data from the province of Quebec. Dans ce texte nous analysons les consĂ©quences de l’inĂ©galitĂ© dans la distribution des ressources mĂ©dicales sur l’utilisation des interventions chirurgicales Ă©lectives en tenant compte de la mobilitĂ© des patients. AprĂšs avoir prĂ©sentĂ© un modĂšle thĂ©orique qui permet d’analyser l’influence de la mobilitĂ© des patients dans un marchĂ© privĂ© d’interventions chirurgicales, nous adaptons ce modĂšle Ă  un contexte d’assurance-maladie gĂ©nĂ©ralisĂ©e. Dans la partie empirique de notre travail nous discutons briĂšvement des principaux rĂ©sultats que l’on retrouve dans la littĂ©rature et nous prĂ©sentons quelques rĂ©sultats empiriques prĂ©liminaires en utilisant des donnĂ©es du QuĂ©bec.

    Thickness-dependent thermal properties of amorphous insulating thin films measured by photoreflectance microscopy

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    In this work, we report on the measurement of the thermal conductivity of thin insulating films of SiO2 obtained by thermal oxidation, and Al2O3 grown by atomic layer deposition (ALD), both on Si wafers. We used photoreflectance microscopy to determine the thermal properties of the films as a function of thickness in the 2 nm to 1000 nm range. The effective thermal conductivity of the Al2O3 layer is shown to decrease with thickness down to 70% for the thinnest layers. The data were analyzed upon considering that the change in the effective thermal conductivity corresponds to an intrinsic thermal conductivity associated to an additional interfacial thermal resistance. The intrinsic conductivity and interfacial thermal resistance of SiO2 were found to be equal to 0.95 W/m·K and 5.1 × 10− 9 m2K/W respectively; those of Al2O3 were found to be 1.56 W/m·K and 4.3 × 10− 9 m2K/W

    Nonlinear Volatility of River Flux Fluctuations

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    We study the spectral properties of the magnitudes of river flux increments, the volatility. The volatility series exhibits (i) strong seasonal periodicity and (ii) strongly power-law correlations for time scales less than one year. We test the nonlinear properties of the river flux increment series by randomizing its Fourier phases and find that the surrogate volatility series (i) has almost no seasonal periodicity and (ii) is weakly correlated for time scales less than one year. We quantify the degree of nonlinearity by measuring (i) the amplitude of the power spectrum at the seasonal peak and (ii) the correlation power-law exponent of the volatility series.Comment: 5 revtex pages, 6 page

    ULTRA-LOCAL TEMPERATURE MAPPING WITH AN INTRINSIC THERMOCOUPLE

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    Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/handle/2042/5920)International audienceWe report on a set-up derived from an Electrostatic Force Microscope (EFM) allowing us to probe temperature with a high spatial resolution. The system uses the well-known Seebeck effect through an intrinsic thermocouple made from an EFM conducting tip put in contact with a conducting sample. The contact radius between tip and sample is currently estimated to be in the 50 to 100 nm range depending on the elastic or the plastic deformation. The contact area can be assimilated to the electrical and thermal contact areas. In those conditions, the issue of heat conduction in air is solved. The thermal measurement is related to the Seebeck junction effect : it will therefore not be sensitive to buried materials or impurities
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