Search results for " Spatial"
showing 10 items of 582 documents
Economic theory and space : a reconciliation
1997
Malgré des apports importants au XIXe siècle et dans la première moitié du XXe et en dépit des efforts de l'après guerre, l’économie spatiale est longtemps restée un domaine marginal par rapport au corpus principal de la théorie économique. L’attachement aux hypothèses de concurrence pure et de rendements non croissants explique en grande partie cette séparation. Depuis quelques années, on assiste, dans le cadre de l'Economie géographique, à un mouvement d’intégration dont le moteur principal est la reconnaissance et l’exploitation des rendements croissants comme explication de la formation de l’espace économique. Ce papier présente un panorama de 25 années d’économie spatiale en soulignant…
A normative planning approach for the Luxembourg : assessment based on spatial simulation
2015
In Luxembourg, daily mobility patterns of both cross-border workers and residents lead to a strong car dependance. This process encourages urban sprawl. Meanwhile the country is faced to increasing housing needs but has to reduce land consumption. Within this context, the main objective of this thesis is to throw light about the relation between residential growth patterns and daily mobility behaviors. In this way, a normative planning approach has been adopted. This approach proposes new planning norms for achieving a series of planning objectives. Quantitative rules are the tools used to apply the norms.Three steps has been done: i) conception of residential growth scenarios for 2030. By …
Demographic change, new business formation and spatial concentration of population
2015
This paper investigates the role of urbanization in the relation between population change and new business formation. The hypothesis of research is that population change significantly influences new business formation only in regions at lower urbanization. This hypothesis is based on the idea that local demand and growing population are significant determinants of new business formation only for rural regions. Using Italian data, we find evidence in support of this hypothesis. Moreover, we find that evidence of spatial dependence in the relation between population change, new business formation and urbanization.
Bovine paramphistomosis in Galicia (Spain): Prevalence, intensity, aetiology and geospatial distribution of the infection
2013
12 páginas, 5 figuras, 4 tablas.
Le paysage, entre esthétique & écologie : modélisation rétrospective à partir de changements d'occupation du sol
2016
Landscape is both a backdrop to the lives of human populations and a medium for the life cycle of animal species. Landscape changes induced by land-use and land-cover dynamics affect both these dimensions, the one aesthetic, and the other ecological. Because these rationales areusually studied within different disciplines, little research has been done into how the two clashor combine as and when landscape structures change. This work seeks therefore to model the spatial co-evolution of the aesthetic and ecological functions of landscape retrospectively usingspatial metrics based on land-cover data. It focuses on changes in the urban fringes of two French cities (Paris and Besançon) over th…
Structure of longitudinal chromomagnetic fields in high energy collisions
2014
We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields.
Tiheä, tavallinen ja joustava
2012
Combining work with family life is a topical and socially important question. This article examines how under-40-year old female PhD students with a family manage to combine the roles of a mother and a doctoral student in their everyday life and how they deal with the major and simultaneous challenges these roles bring. The focus is on the everyday challenges female PhD students face and the choices they have to make at the interface of family and study. This article is part of research examining the life course and future thinking of female PhD students. Nowadays the atmosphere of planning is all-pervasive. Individuals are expected to plan their life course carefully. They should plan thei…
Location Theories and Business Location Decision: A Micro-Spatial Investigation of a Nonmetropolitan Area in Canada
2016
International audience; This paper draws on location theories to statistically identify the relationship between the location of individual business establishments and the characterization of their local economic environment. Taking a microspatial perspective, the paper develops indicators from distance-based measures (DBM) to serve as independent variables in a discrete choice model (DCM). Using a 2006 database of individual business establishments in the Lower-St-Lawrence region—a coherent, nonmetropolitan subsystem of cities in the province of Québec, Canada—we provide an empirical analysis of the determinants of individual establishments’ location decisions in relation to their main eco…
Économétrie spatiale appliquée des microdonnées
2014
220 pages; International audience;
Equilibre spatial de consommation : quelques résultats
1981
La satisfaction du consommateur est directement liée au niveau des caractéristiques fournies par la consommation des produits. L'analyse est effectuée dans l'espace des caractéristiques des biens (...)