Search results for "Measure"
showing 10 items of 4687 documents
Harnessing the biodiversity value of Central and Eastern European farmland
2015
A large proportion of European biodiversity today depends on habitat provided by low‐intensity farming practices, yet this resource is declining as European agriculture intensifies. Within the European Union, particularly the central and eastern new member states have retained relatively large areas of species‐rich farmland, but despite increased investment in nature conservation here in recent years, farmland biodiversity trends appear to be worsening. Although the high biodiversity value of Central and Eastern European farmland has long been reported, the amount of research in the international literature focused on farmland biodiversity in this region remains comparatively ti…
Lasergrammetry and high precision topography measurements to study a complex fortified building: Tour de la Pelote (Besançon, France)
2018
International audience
La rétention de sûreté : la première mesure de sûreté privative de liberté depuis le nouveau Code pénal
2015
The French criminal law is characterised by a willingness to prevent recidivism. To give concrete expression to this will, security measures are implemented among which the secure detention. However, the secure detention is not an ordinary measure and gives rises to many debates which, in fact, take up old and recurrent controversies. This measure is based on the assumption that sexual and/or violent criminals show a disease which may suggest a risk of a second offence. As a result, by considering them as sick persons, the legislator asserts that they can be treated. Accordingly, medical care is advised as the only solution to prevent a second offence. However, this disease itself often ind…
Comparison of British and French expatriate doctors’ characteristics and motivations
2012
Objective The aim of this study was to analyse the migration of doctors between the UK and France, in an attempt to identify the reasons for these migrations. Design This was a cross-sectional study conducted using a self-completed questionnaire. Setting The questionnaire was sent to all British doctors practising in France and to all French doctors practising in the UK. Participants The doctors were identified, thanks to official data of the National Medical Councils. There were 244 French doctors practising in the UK and 86 British doctors practising in France. Outcome measures A questionnaire was specifically developed for the study to determine the reasons why doctors moved to the other…
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…
Electronic noses : specify or disappear
2000
Abstract When the quality control is achieved by using GC or GC/MS, the apparatus must comply with the applicable norms, but what about “electronic noses”? End users demand for formal specifications for selectivity, sensitivity, repeatability and sample throughput. The behavioural modelling of electronic olfactometers may provide specifications for these required parameters. This will allow both the measure itself, and evaluate the influence of the experimental errors on the sample classification. Users may expect to find a methodology allowing the performances of systems to be checked before any final decision and during routine use. We have demonstrated that the system sensitivity and log…
Noise characterization of analog to digital converters for amplitude and phase noise measurements
2017
International audience; Improvements on electronic technology in recent years have allowed the application of digital techniques in phase noise metrology where low noise and high accuracy are required, yielding flexibility in systems implementation and setup. This results in measurement systems with extended capabilities, additional functionalities and ease of use. In most digital schemes the Analog to Digital Converters (ADCs) set the ultimate performance of the system, therefore the proper selection of this component is a critical issue. Currently, the information available in literature describes in depth the ADC features only at frequency offsets far from the carrier. However, the perfo…
Phase-Noise and Amplitude-Noise Measurement of DACs and DDSs
2019
This article proposes a method for the measurement of Phase Noise (PN, or PM noise) and Amplitude Noise (AN, or AM noise) of Digital-to-Analog Converters (DAC) and Direct Digital Synthesizers (DDS) based on modulation-index amplification. The carrier is first reduced by a controlled amount (30-40 dB) by adding a reference signal of nearly equal amplitude and opposite in phase. Then, residual carrier and noise sidebands are amplified and sent to a conventional PN analyzer. The main virtues of our method are: (i) the noise specs of the PN analyzer are relaxed by a factor equal to the carrier suppression ratio; and, (ii) the capability to measure the AN using a PN analyzer, with no need for th…