Search results for "Recherche"
showing 10 items of 274 documents
BIOCHARS IN SOILS: TOWARDS THE REQUIRED LEVEL OF SCIENTIFIC UNDERSTANDING
2017
The special issue on Biochar as an Option for Sustainable Resource Management Key priorities in biochar research for future guidance of sustainable policy development have been identified by expert assessment within the COST Action TD1107. The current level of scientific understanding (LOSU) regarding the consequences of biochar application to soil were explored. Five broad thematic areas of biochar research were addressed: soil biodiversity and ecotoxicology, soil organic matter and greenhouse gas (GHG) emissions, soil physical properties, nutrient cycles and crop production, and soil remediation. The highest future research priorities regarding biochar’s effects in soils were: functional …
Research and development expenditure in France : an analysis by sector
1996
La taille des entreprises a toujours été considérée comme une variable déterminante dans l'explication de leurs stratégies (stratégie de concentration ou stratégie d'innovation). Ce travail se propose d'analyser la relation évoquée par J. Schumpeter entre la taille des entreprises et le montant des dépenses en recherche-développement. Tout en suivant la méthodologie utilisée en Economie Industrielle, nous avons d'abord conduit une analyse exploratoire sur cette relation. Cette étude, réalisée au niveau branche, montre que la taille (mesurée par le nombre de salariés, la production effective ou la valeur ajoutée) exerce une influence positive sur les dépenses en recherche-développement (mesu…
A Simple Fusion Method for Image Time Series Based on the Estimation of Image Temporal Validity
2015
High-spatial-resolution satellites usually have the constraint of a low temporal frequency, which leads to long periods without information in cloudy areas. Furthermore, low-spatial-resolution satellites have higher revisit cycles. Combining information from high- and low- spatial-resolution satellites is thought a key factor for studies that require dense time series of high-resolution images, e.g., crop monitoring. There are several fusion methods in the bibliography, but they are time-consuming and complicated to implement. Moreover, the local evaluation of the fused images is rarely analyzed. In this paper, we present a simple and fast fusion method based on a weighted average of two in…
L'utilisation du temps scolaire dans la classe : l'apport de la recherche en éducation
2008
08105
Présentation du GDRI INTI et de son projet de recherche concerté du réseau INTI
2012
International audience
Appropriateness between physical space and multicentre economic space in localization problems
1991
Location models are constructed in mathematical economic spaces whereas people locate themselves in real or physical spaces. If economic spaces are multicentric ones, their properties are different from physical spaces. We say that these two spaces are not symmetric. Hence, mathematical location model can lead to an optimal location solution which doesn't' exist in physical space. But, if we admit that an optimal location solution owns more or less to a function of demand of location, we can resolve this question. Then, fuzzy demand functions of location are defined in multicentric spaces and an illustration of this concept is presented.
Les conditions nécessaires au développement de la recherche. Analyse de formations de recherche de petite et moyenne dimension à l'université de Dijon
1978
référence interne : 75020
Activités archéologiques de l'École française de Rome. Chronique. Année 2008.
2009
Plan. Ill. en coul.; International audience
Activités archéologiques de l'École française de Rome. Chronique. Année 2007.
2008
Plan. Ill. en coul.; International audience
Lo ZEN e l'arte della narrazione dei luoghi
2011
This paper aims at analysing a very well-known Italian neighbourhood, which is located in Palermo and called Zen. This neighbourhood has often been described as a clear example of the worst and most disgraced urban landscapes in Italy, as mass media and local stakeholders shaped its image for their own uses. Through a series of interviews, on-the-spot inspections and the use of other qualitative methodologies, the final goal of this paper is to subvert traditional representations of this place and enforce a plural way of describing it, using research techniques that might position the researcher and his or her own description inside a larger framework. Would geographers, social scientists a…