In most real-life applications, thermal modeling must be done in outdoor, extremely varying, weather conditions, complexifying this thermal modeling. One of the phenomena significantly influencing the predicted temperatures is heat convection. This paper discusses heat convection modeling. Two classes of models exist. The first numerically solves the fluid motion equations and the second design...

Because the elderly account for 80% of deaths from COVID-19 and they may be more vulnerable to air pollution, in this retrospective study we aimed explore individual environmental risk factors mortality geriatric departments seven European University hospitals, between February May 2020. Long-term exposure pollution was estimated through annual pollutant concentrations at residential address ov...

The advent of digital sound synthesis has offered to the musical researcher the possibility of exploring the concept of musical instrument in its broader sense. One principal axis of interest of the IRCAM Musical Acoustics Team is research on modelisation of musical instrument oscillation, the computer implementation of the models that arise, and the evaluation of the musical interest that the ...

Nowadays, most of the computation of a rendering system is done in color space. Thus, the whole process, from acquisition (with a digital camera) and modelisation to display (on CRT/LCD displays) is color-based. Unfortunately, the re ection of a light on a surface is based on an approximation which can reduce the preservation of the color appearance. In this report, we present a new approach fo...

Modelisation and simulation of promising non linear optical materials such as photorefractive materials is a field which generates complexity. The involved non linear phenomena imply the use of highly numeric, computer intensive methods. The simulation of the propagation of an optical pulse in a photorefractive non linear media is here simulated thanks to the collaboration between physicists an...

We consider population models in which the individuals reproduce, die and also migrate in space. The population size scales according to some parameter N , which can have different interpretations depending on the context. Each individual is assigned a mass of 1/N and the total mass in the system is called population density. The dynamics has an intrinsic density regulation mechanism that drive...

Asteroseismology of the planet-hosting star µ Arae. II. Seismic analysis. Abstract. As most exoplanets host stars, HD 160691 (alias µ Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star would be completely over-metallic, or it may be due to accretion in the early phases of planetary formation, in wh...

Neural networks are a new, very flexible class of statistical and if applied to economic data econometric models. Basically, neural networks are a generalization of nonlinear regression models and can therefore be applied to all kinds of regression problems. Since neural networks do not require the specification of a certain structural form, they are particularly suited for modelling very compl...