Search results for "Cité"
showing 10 items of 403 documents
À l’aube des villes antiques : vocabulaire de la cité et formes urbaines. – Introduction
2020
How to envisage research on the ancient city? What are the most appropriate instruments to analyse it? What are the relationships between the emergence of the city as an independent community and the urbanization as archaeology can restore it? Without claiming to resolve these difficult questions, the contributions gathered here show that urbanization and the definitions of the ancient city used by contemporary historians and archaeologists are far from being precisely determined; they can even vary according to the authors, disciplines, periods and contexts. As a consequence, there is no town, but towns; no city, but cities. The issue of a definition is also the evaluation of theories, in …
Does interindividual variability of saliva affect the release and metabolization of aroma compounds ex vivo? The particular case of elderly suffering…
2019
The aim of this work was to study the effects of interindividual variability of human elderly saliva on aroma release and metabolization by ex vivo approaches. Thirty individuals suffering or not from hyposalivation were selected from a panel formed by 110 elderly people (aged >65 years old) that were matched by age and sex. Then, their stimulated saliva samples were independently incubated in presence of three aroma compounds (ethyl hexanoate, octanal, 2-nonanone) to perform headspace-gas chromatography and liquid/liquid extraction-gas chromatography mass spectrometry analyses. These assays revealed that the extent of saliva effect on the release and metabolization of aroma compounds was h…
Interannual memory effects for spring NDVI in semi-arid South Africa
2008
[1] Almost 20 years of Normalized Difference Vegetative Index (NDVI) and precipitation (PPT) data are analysed to better understand the interannual memory effects on vegetation dynamics observed at regional scales in Southern Africa (SA). The study focuses on a semi-arid region (25°S–31°S; 21°E–26°E) during the austral early summer (September–December). The memory effects are examined using simple statistical approaches (linear correlations and regressions) which require the definition of an early summer vegetation predictand (December NDVI minus September NDVI) and a consistent set of potential predictors (rainfall amount, number of rainy days, rainfall intensity, NDVI and Rain-Use-Efficie…
Pre-imaginal conditioning alters adult sex pheromone response in Drosophila
2018
https://peerj.com/articles/5585/#supplemental-information; International audience; Pheromones are chemical signals that induce innate responses in individuals of the same species that may vary with physiological and developmental state. In Drosophila melanogaster, the most intensively studied pheromone is 11-cis-vaccenyl acetate (cVA), which is synthezised in the male ejaculatory bulb and is transferred to the female during copulation. Among other effects, cVA inhibits male courtship of mated females. We found that male courtship inhibition depends on the amount of cVA and this effect is reduced in male flies derived from eggs covered with low to zero levels of cVA. This effect is not obser…
Lack of Hypothalamus Polysialylation Inducibility Correlates With Maladaptive Eating Behaviors and Predisposition to Obesity
2018
This original research article (6 p.) is part of the research topic . Specialty section: This article was submitted to Neuroenergetics, Nutrition and Brain Health, a section of the journal Frontiers in Nutrition.; International audience; High variability exists in individual susceptibility to develop overweight in an obesogenic environment and the biological underpinnings of this heterogeneity are poorly understood. In this brief report, we show in mice that the vulnerability to diet-induced obesity is associated with low level of polysialic acid-neural cell adhesion molecule (PSA-NCAM), a factor of neural plasticity, in the hypothalamus. As we previously shown that reduction of hypothalami…
L'efficacité des privatisations françaises : une vision dynamique à travers la théorie de la gouvernance
2004
International audience; A reading of the process of privatization through the corporate governance theory leads to propose a model taking into account, on the one hand, the time dimension of the process of privatization, on the other hand, the contextual, organizational, governance and strategic variables which influence this process. After replicating some traditional tests, we test this model on a sample of French privatized firms and on a seven years horizon. The positive effect traditionally attributed to privatizations is not confirmed. The importance of the effect is subordinated to some of the suggested variables.; Une lecture du processus de privatisation à travers la théorie de la …
Les activités de rééducation GAPP à l'école primaire : analyse du fonctionnement et évaluation des effets
1991
Alain Mingat : Die Umschulungsaktivitäten der GAPP (Gruppen zur psychopädagogischer Hilfe) in der Grundschule. Die GAPP wurden vor za. 20 Jahren geschaffen mit dem Zweck, die Schüler zu unterstützen, die vorübergehende Schwierigkeiten zur guten Eingliederung in die Schule aufweisen. Diese Einrichtung wurde bisher lediglich diskursiv analysiert. Der vorliegende Artikel zeigt, dass starke Unterschiede im Funktionieren der Dienstleistungen bestehen (Mittelzuweisung durch die Verwaltung, Umschulungspraxis, allgemein und zwischen den einzelnen GAPP-Einrichtungen) mit der Konsequenz, dass die Zulassungsentscheidungen sehr ungenau sind : das erleichtet nebenbei die Bewertung der Auswirkungen. Dies…
La géographie humaine d’Hydace
2020
Hydatius’ Chronicle allows us to set a human geography map focused on the periphery of 5th century Roman Empire. Despite the pretention to be universal, it shows a world shrunk to Iberian territories as parts of the greater Christian space. Ciuitas and urbs seem to be interchangeable, but some evidence indicate that the first word is more significant.
Évaluation de l'efficacité externe de la formation des agriculteurs
1997
Alain Mingat und Nelly Stephan, Bewertung der externen Effektivität landwirtschaftlicher Ausbildung. In diesem Beitrag soill die externe Effektivität der Ausbildung der Landwirte bewertet werden. Dabei soll festgestellt werden, ob besser ausgebildete Landwirte effizienter als weniger gut ausgebildete sind. Die durchgeführte Untersuchung erlaubte die Wirksamkeit der Ausbildung in zwei Phasen zu untersuchen : zum Zeitpunkt der Niederlassung in einem landwirtschaftlichen Betrieb, wo der Landwirt die Ausrichtung seines Betriebs festlegt, und während dieser Niederlassung, urn die Fähigkeit zur Führung dieses Betriebs zu bewerten. Auch wenn die Anhebung des technischen Ausbildungsniveaus ein wich…
Les aides-éducateurs à l'école primaire : entre polyvalence et spécialisation, quelle efficacité pédagogique ?
2001
This paper examines the situation of classroom assistants who were recruited three years ago in French schools. This research took place in 150 schools (academy of Burgundy) in which two age groups (8 and 10) were assessed both at the begining and the end of the school year. It concerned a large sample of classroom assistants (150) whose timetables have been collected to know precisely how their time is used in schools and how it may influence students achievement. First of all, the main results show that classroom assistants take part in a lot of varied activities, especially in academic fields. Secondly, those activities tend to have a positive impact on students achievement, particularly…