Search results for "méthode"
showing 10 items of 189 documents
De l'exploitation à l'entreprise agricole : regards sur la loi d'orientation agricole du 5 janvier 2006
2007
International audience
L'évolution de la représentation des médias de communication : le cas d'Internet
2008
the aim of this study is to show the evolution of the social representation of an object which gradually anchored in daily practices. Our approach is longitudinal the study took place during 5 years. 315 subjects were divided in 3 independent groups of regular users of Internet. Measurement was done at 3 times: in 2001, 2003 and 2005. Subjects are solicited for a verbal association task. Results are treated by a lexical analysis followed by a prototypic analysis (VERGES, 1992). Results show an important evolution of general organization of elements constituting the social representation. Discussion underlies two main points. First concerns modifications appearing inside the representation d…
Essai de standardisation des méthodes d'isolement des organites subcellulaires
1983
Morphologie des "villes émergentes" en Europe à travers les analyses fractales
2003
L'étalement urbain et la maîtrise de ses conséquences reste un défi important de l'aménagement du territoire. L'objectif de cette recherche est de mettre en évidence les différentes utilisations de la géométrie fractale pour étudier l'organisation spatiale des agglomérations et, de quelle manière il est possible de modéliser différentes caractéristiques des taches urbaines tel que l'allongement des bordures urbaines ou la fragmentation de la surface bâtie. Puis, elle vise à l'application des méthodes d'analyse à un échantillon d'agglomérations européennes, en développant un nouveau logiciel permettant d'utiliser une gamme plus large de mesures, afin de comparer leur organisation spatiale et…
Compte rendu de : Éric Baratay (dir.), Aux sources de l’histoire animale, Paris, Éditions de la Sorbonne, 2019, 282 p.
2020
International audience
Etude en champ proche et en champ lointain de composants périodiquement nanostructurés : cristaux photoniques et tamis à photons
2004
Recently, a new class of optical components is appeared. Its main characteristic is to be formed by a periodical sub-wavelength pattern, leading to the apparition of a spectral domain where propagation of light inside the structure is forbidden -- a photonic bandgap. This work is devoted to the study in the near- and far-field of two kinds of periodical optical components: photonic crystals (PCs) and nanostructured metallic films that exhibit the so-called enhanced transmission. First, we study two-dimensional PCs with a scanning near-field optical microscope (SNOM) in collection mode. With this SNOM, we directly map the intensity distribution inside PC-based microcavities. We also evidence…
Educational attainment and permanence in NEET situation among youth
2018
Using the French Labour Force Survey, this paper analyses the individual and institutional effects on the transitions into and out of NEET status before and after the crisis. In particular, we question whether the profiles or the labour market transition patterns of young people have changed since the economic crisis. The econometric results indicate that the NEET risks vary according to age, sex, educational level and social origins. They also show that the transition out of NEET status is more related to the educational attainment, after 2008. Conversely, the lack of human capital and social capital increases the retention of youth in NEET situations.
Qualité des sols - Méthode pour extraire directement l'ADN d'échantillons de sol. Norme AFNOR
2010
La présente Norme internationale spécifie une méthode pour extraire directement l'ADN d'échantillons de sol en vue d'analyser la structure globale et l'abondance des communautés microbiennes du sol en utilisant des techniques de PCR. Cette méthode est principalement destinée aux sols agricoles et forestiers. Cette méthode peut ne pas être appropriée aux sols riches en matières organiques (par exemple sols de tourbières) ou aux sols très pollués par des polluants organiques ou des métaux lourds. L'extraction directe de l'ADN d'échantillons de sol fournit des informations précieuses sur l'abondance et la structure des communautés microbiennes qui sont des paramètres clés pour estimer la biodi…
Les plafonds voûtés des traités historiques aux applications en Sicile
2016
I controsoffitti lignei voltati - a partire dal XVII secolo e con notevole diffusione ed impiego nel XVIII secolo in tutta l’Europa - hanno qualificato sia edifici pubblici e privati di pregio che anche gran parte dell’edilizia di base, per le loro caratteristiche di indipendenza strutturale, leggerezza e di facile assemblaggio delle parti. Lo studio e la ricerca vogliono restituire memoria dei materiali costitutivi e delle tecniche costruttive impiegate nella realizzazione dei manufatti, per offrire un utile strumento di conoscenza agli studiosi ed ai tanti operatori del settore impegnati nell’intervento di recupero e/o restauro. C’est grâce à l’indépendance structurelle, à la légèreté et …
Learning from Implicit Learning Literature: Comment on Shea, Wulf, Whitacre, and Park (2001)
2003
International audience; In their analysis of complex motor skill learning, Shea, Wulf, Whitacre, and Park (2001) have overlooked one of the most robust conclusions of the experimental studies on implicit learning conducted during the last decade--namely that participants usually learn things that are different from those that the experimenter expected them to learn. We show that the available literature on implicit learning strongly suggests that the improved performance in Shea et al.'s Experiments 1 and 2 (and similar earlier experiments, e.g., Wulf & Schmidt, 1997) was due to the exploitation of regularities in the target pattern different from those on which the postexperimental intervi…