Search results for "Spatial"
showing 10 items of 2121 documents
Continuum: A spatiotemporal data model to represent and qualify filiation relationships
2013
International audience; This work introduces an ontology-based spatio-temporal data model to represent entities evolving in space and time. A dynamic phenomenon generates a complex relationship network between the entities involved in the process. At the abstract level, the relationships can be identity or topological filiations. The existence of an identity filiation depends on whether the object changes its identity or not. On the other hand, topological filiations are based exclusively on the spatial component, like in the case of growth, reduction, merging or splitting. When combining identity and topological filiations, six filiation relationships are obtained, forming a second abstrac…
Analysing spatial dynamics using cellular automata-based artificial neural networks
2015
La modélisation de l'information spatio-temporelle
2012
Understanding Urban Fabric with the OH_FET model based on Social Use, Space and Time
2008
The proposed principle for understanding the urban fabric is based on considering the town as a set of complex objects, taking a systemic approach. The town system used to study the urban fabric over large time spans is composed of three sub-systems relating to historical objects from the level of the excavation to that of the former urban space: function (social use), space (location, surface area and morphology) and time (dating, duration and chronology). The historical object is the analytical unit of the space studied. It is the Cartesian product of the three sets, Social use, Space and Time, from which it stems. On the basis of this process, the Historical Object (OH) is broken down in…
Hétérogénéité spatiale : principes et méthodes
2004
Spatial Heterogeneity : Principles and Methods This article has a dual purpose . First , it describes the main econometric specifications which can be used to represent spatial heterogeneity , reflected in an instability of parameters in space and / or a heteroscedasticity of error terms . Only the specifications valid in cross-section are examined . Second , it explains the links between spatial heterogeneity and autocorrelation , the other major feature of localised data , defined by the absence of independence between geographical observations . In particular , we look at the extent to which traditional tests of heteroscedasticity or instability need to be amended to take account of spat…
Collaborative Design Rational and Social Creativity in Cultures of Participation
2011
The rise in social computing has facilitated a shift from consumer cultures, focused on producing finished media to be consumed passively, to cultures of participation, where people can access the means to participate actively in personally meaningful problems. These developments represent unique and fundamental opportunities and challenges for rethinking and reinventing design rationale and creativity, as people acclimate to taking part in computer-mediated conversations of issues and their solutions. Grounded in our long-term research exploring these topics, this paper articulates arguments, describes and discusses conceptual frameworks and system developments (in the context of three cas…
Au revoir Paris! Spanish regions closer to the EU average and further away from the leaders
2021
This paper confirms that Spanish regions in 2015 were closer to the EU average in labour productivity than in 2000, but further away from the richest regions such as Île de France. A dynamic shift-share analysis at a 10-industry level of disaggregation shows that the main driver of convergence with the EU average is catch-up in labour productivity within the same industry, while disparities with the top regions (especially Île de France) mainly involve differences in patterns of specialization (between-industry divergence) followed by technological divergence (within-industry effect). The industry mix of the regions reveals that a new pattern of specialization is taking shape in Europe, dri…
Spatial Indicators for a Europe 2020 Strategy Territorial Analysis – SIESTA
2014
Il contributo descrive la situazione del contesto territoriale italiano a partire dai risultati del progetto ESPON SIESTA in riferimento agli indicatori spaziali per la strategia Europe 2020.
Archaedyn - Workshop 1 - The dynamics of agricultural areas in the long term
2019
Archaedyn - Workshop 1 - The dynamics of agricultural areas in the long term
2019
Document destiné à être publié dans l’ouvrage ARCHAEDYN. Dynamique spatiale des territoires de la Préhistoire au Moyen Âge, auteurs : BERTONCELLO, F., FAVORY, F., GAUTHIER, E., GEORGES-LEROY, M., NUNINGER, L., POIRIER, N., WELLER, O., à paraître aux PUFC, Besançon, collection Cahiers de la MSHE, série Dynamiques territoriales.