Search results for "agglomération"
showing 10 items of 52 documents
Services supérieurs et recomposition urbaine
2000
Since the 1980s, we have observed an increasing tendency o f specialized services like producer services to leave their « natural habitat » in the center o f large met ropolitan areas in order to re loc at e in suburban zones. This phenomenon is particularly apparen t in North American citi es and seems to be occurring around certain French cities too. This paperinvestigates the forms taken by this new trend, and the reasons behind it. Taking economic geography and economics of cities as our theoretical basis, we first describe the main forces deter mining the agglomeration o f producer services and their preference for certain big cities. Agglomeration factors are to be looked for not only…
Organisation spatiale et Dégradation environnementale : croissance et agglomération
2015
Marchés du travail et disparités régionales en Pologne
2001
This article evaluates empirically the effect o f market introduction on the level o f regional inequalities and on the polarisation o f economic activities in Poland. We note an increase o f the disparities between regions over the relevant period. The re-polarisation process cannot been explained by a spatial re-allocation of labour force but rather results o f the differentiation of sectoral restructuring between regions the regional diversity o f sectoral adaptation. The search for agglomeration economies explains the spatial concentration o f services and o f added value in the regions where the biggest cities are located. A cumulative process o f agglomeration is observed. Therefore, …
Empirical tests of the multicentric urban models
1999
Since the seventies the effects of city size growth and diversification of economic activities on the multipolarisation of economic activities have questioned the theoretical and empirical appropriateness of the monocentric urban pattern to explain and describe the spatial organization of the modern metropolitan areas. New assumptions were based on multicentric and nonmonocentric urban economics models, which have become the core of new economic geography analysis during the nineties. At the same time, a lot of empirical studies have attempted to describe the urban economic patterns of North American metropolitan areas. Using this empirical literature, the aim of this paper is to propose a …
Les petites agglomérations françaises et espagnoles face à la grande vitesse ferroviaire : comment convertir l'accessibilité en attractivité ?
2013
Characterized by a similar size and radial structure, high-speed rail French and Spanish networks are designed to meet long distance accessibility needs of major metropolitan systems. However, the two systems serve a number of towns with less than 100,000 inhabitants, which understand this opportunity as means to improve their attractiveness. The comparison of the two networks, which systems obey to different operating principles, allows specifying the role played by the high speed in the precise situation of these small towns. Moreover, this comparison allows analyzing interactions between accessibility gains and development strategies that have been implemented. Beyond their diversity, th…
L’habitat perché du Malpas à Soyons (Ardèche) durant l’Antiquité tardive : état des données
2023
International audience; Recent excavations carried out between 2011-2016 in the ancient and medieval town of Soyons (Ardèche), located in the middle Rhône valley, in the territory of the roman colony of Valence, provide us new data on the occupation of the hilltop of Le Malpas.The study of the fortification of the Iron age has revealed the existence of a rampart built during the 3rd century AD. At this time, the lower city, under the actual village, is gradually abandoned. After a probable hiatus during the 4th century AD, the hilltop and the lower city grew again during the 5th and the 6th century AD. The late antique artefacts discovered in all the trenches dug on the Malpas let us assume…
Amel-sur-l'Etang (Meuse) : a rural-type town on the outskirts of a large sanctuary
2022
Approche géographique des approvissionnements en plaquettes foréstières des chaufferies du secteur collectif/tertiaire : application au Pays Loue-Lis…
2011
In a context of strong increase of fuelwood demand in the collective sector, the supply issue becomes central to all stakeholders, raising many issues relating to land and forestry planning, local development, environment ... Meanwhile, questions emerge: how much energy can be mobilized sustainably? Does the spatial and structural configuration of forests influence the supply process? Do we seek to minimize transport distances? Can we observe spatial competition between the boilers ? To understand the current organization of supplies, we analyzed two sets of data traceability of wood chips. Then, we have developed a model of local supply basins, considering constraints of renewability of th…
On the emergence of the urban phenomenon. Part I
2001
In this paper we develop a relatively simple but general model describing the formation of urban agglomerations in a pre-industrial setting. Rural agglomeration on a local scale arises from the multiplication and specialization of intermediate goods and labor services, while dispersion is due to the commuting costs of agricultural workers. Urban agglomeration on a more global scale stems from the trade-off between increasing returns to scale and transport costs of goods. We derive a general equilibrium model of the formation of urban structures and show how population growth, strict indivisibilities and structural changes in the production sector can modify quantitatively and qualitatively …