Search results for "Instrument"
showing 10 items of 5652 documents
La biopiraterie et le commerce des produits pharmaceutiques face aux droits des populations locales sur leurs savoirs traditionnels
2006
Collection des travaux du Credimi
Adoption à des fins de transmission de l'exploitation agricole, obs. sous CA Grenoble, 17 juin 2004.
2006
International audience
Economic Returns to Education in France: OLS and Instrumental Variable Estimations
2013
En ligne sur : http://121.52.153.179/JOURNAL/LJE%20VOL%2018-2/Bhatti,%20Bourdon%20and%20Aslam.pdf; International audience; This article estimates the economic returns to schooling as well as analyzing other explanatory factors for the French labor market. It addresses the issue of endogeneity bias and proposes two new instruments for use in the instrumental variable two-stage least squares technique. Our results show that the proposed instruments are relevant and adequate, based on evidence from the available literature. After using the proposed instruments, we find that the OLS coefficients for schooling are biased downwards. Finally, we choose between the two proposed instruments.
Instrumentarium et paysage sonore dans la littérature médiévale
2015
OS nat; National audience; no abstract
Beginners' musical instrument practice at home A survey of music-school teachers
2022
The day-to-day instrumental work of the students of conservatories and music schools seems to be an essential condition for a fulfilling and quality musical practice. This survey, addressed to conservatory and music teachers, attempts to understand how this instrumental practice is organized at home by students and families. It deals with student autonomy, personal time and workload, the management of oral instructions, the use of written materials, the methods used to help students in difficulty as well as the role of reprimand and self-assessment during the instrumental lesson. On the teachers' side, it points to a significant use of reprimand to deal with insufficient work situations and…
L'indice de SEN, outil de mesure de l'équité des systèmes éducatifs. Une comparaison à l'échelle européenne
2005
05007; Sans développer à nouveau les théories de la justice, il est intéressant de s'intéresser à l'une d'elle en particulier, pour voir comment de façon instrumentale, il est possible de mesurer cette équité, grâce à la construction d'un indicateur particulier. La perspective adoptée par Sen notamment, permet de mesurer la justice par la proportion d'individus se situant sous un seuil. Au niveau du système éducatif, l'approche adoptée consiste à penser "qu'aucun élève ne doit quitter le système éducatif au dessous d'un seuil minimum de compétences pour vivre une vie décente dans une société moderne".
SENS's Indicator. A Tool for Measuring the Equity of Educational Systems. A Comparison of European Countries
2005
Initially, Sen's Indicator was built to measure the rate of poverty. Its principal advantage is that it considers three dimensions simultaniously: The rate of poverty, the intensity of poverty, the inequality of income distribution among the poor. For the work of GERESE, SEN's Indicator has been adapted for the educational system. We have built two indicators : an indicator of weakness of the students and another for the excellence of the students. I will develop in this text the indicator of weakness.
Acoustic properties of plates with unevenly distributed macro perforations backed by woven meshes
2012
A hybrid model describing the acoustic properties of plates with macro-perforations that can be unevenly distributed on the plate surface and backed by woven or precision woven meshes with microscopic perforations is proposed. The plate perforations may be of circular or rectangular shapes. Since the perforated plate may not necessarily be considered as an equivalent fluid, its surface impedance is calculated by the Maa model [Noise Control Eng. J. 29, 77-84 (1987)], whereas the Johnson-Champoux-Allard model [J. Appl. Phys. 70, 1975-1979 (1991)] is used for the mesh. It is observed that the absorption of the carrying plate seems to depend on the hydraulic diameter of the perforations and no…
Gas sensors arrays (electronic noses) : a study about the speed/accuracy ratio
2000
Abstract New Fingerprint Mass Spectra (FMS) systems claim for a higher precision, a reduced analysis time, and a lower drift, compared with Gas Sensors Arrays ‘Electronic Noses’. We demonstrated in this study that metal oxide gas sensors may have highly improved performances for both accuracy and run time, when used in optimum conditions. The different noise components were quantified referring to popular words (equivalent of ethanol concentration) using the transfer function of the sensor. It was pointed out that sample surrounding greatly affects the noise level, and that the signal-to-noise ratio may be dramatically increased, reducing the distortion generally assessed between sensor and…
Noise Analysis and Comparison of Phase-and Frequency-Detecting Readout Systems: Application to SAW Delay Line Magnetic Field Sensor
2019
International audience; Transmission surface acoustic wave (SAW) sensors are widely used in various fields of application. In order to improve the limit of detection (LOD) of such sensor systems, it is essential to understand and quantify the relevant noise sources. Only then, strategies for noise reduction can be developed. In this paper, low noise readout systems for the application with SAW sensors in an open-loop and a closed-loop configuration are presented and experimentally investigated with regard to their phase noise on the example of a SAW delay line magnetic field sensor. Besides a comprehensive analysis of the phaseand frequency modulated signals, respectively, previously derive…