Search results for "modelisation"
showing 4 items of 24 documents
Caractérisation par stéréovision de l'hétérogénéité d'un peuplement adventice dans une culture
2007
National audience
Vitesse, accessibilité et étalement urbain ; analyse et application à l'aire urbaine dijonnaise
2003
The set of themes of the city is approached primarily by the means of the residential density. This concept is analyzed from a purely conceptual point of view, then more theoretical (thus making use of rather traditional econometric models: Clark, Newling) for finally being applied to the agglomeration dijonnaise like with its urban surface. One releases the great urban structures thus revealing an intermediate city between the model monocentric and polycentric. The two components are analyzed successively starting from the concept of residential density. Taking as assumption that the cities are dynamic, the second stage is that of urban sprawl out. A first introductory approach attempts to…
Impact du changement climatique sur l’oïdium de la vigne : cas de la Champagne
2019
Powdery mildew, one of the most widespread grapevine disease, causes damage to the plant foliage, reduces yields and altersquality of grapes. This fungus development is strongly controlled by climate conditions and viticulture requires in many regionslarge quantities of pesticides for disease control. Projecting the impacts of climate change on these disease and developinga better understanding of future disease risk is crucial, given the increasing societal pressure for pesticide reduction andsustainability. This study focused on (i) the elaboration of an empirical model that establishes links between monthly climate dataand annual powdery mildew pressure in Champagne and (ii) the use of t…
Geography of production and incomes ?
2018
The idea that a difference exists between territories supported by the creation of wealth and others more focused on their spending was put forward by Laurent DAVEZIES. This author suggests a noticeableopposition between a geography of production and a geography of incomes. If the underlying transfers of income between these territories are supposed to ensure territorial and social cohesion, they would be a burden likely to decrease the efficiency of the most productive territories. It is therefore necessary, he says, to stop « incantations on the theme of territorial cohesion » and to condemn « discriminating policies in favor of territories creating growth ». However, these analyzes suffe…