Centre de documentation
scientifique

Dépouillements

Climate forecast maps as a communication and decision-support tool: an empirical test with prospective policy makers / T. Ishikawa in Cartography and Geographic Information Science, vol 32 n° 1 (January 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 1 (January 2005) . - pp 3 - 16 Titre : Climate forecast maps as a communication and decision-support tool: an empirical test with prospective policy makers Type de document : Article/Communication Auteurs : T. Ishikawa, Auteur ; G. Barnston, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 3 - 16 Langues : Anglais (eng) Descripteur : [Termes IGN] carte météorologique [Termes IGN] carte thématique [Termes IGN] cartologie [Termes IGN] communication cartographique [Termes IGN] lecture de carte [Termes IGN] outil d'aide à la décision [Termes IGN] prévision météorologique [Vedettes matières IGN] Cartologie Résumé : (Auteur) This paper reports an empirical study of communication issues concerning climate forecasts. Students in a professional master's degree (MPA) program in environmental science and policy participated in the study as prospective policy makers. Participants viewed a set of currently issued precipitation forecast maps, and answered questions designed to assess, in the context relevant to agricultural and environmental decision-making, their understanding and evaluation of the maps. Participants failed to understand some aspects of the information shown on the maps, in the current design, as the map makers intended. In particular, participants had difficulty understanding probability forecast maps and distinguishing probabilistic three category forecasts and the amount of precipitation. Most participants evaluated the degree of agreement between the forecast and observation as "agree only slighly" or "agree somewhat". More than half of the participants were not inclined to use the forecasts in agricultural decision-making. Implications for improvement in design for better communication are discussed. Numéro de notice : A2005-134 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/1523040053270747 En ligne : https://doi.org/10.1559/1523040053270747 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27272 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Cubic map algebra functions for spatio-temporal analysis / J. Mennis in Cartography and Geographic Information Science, vol 32 n° 1 (January 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 1 (January 2005) . - pp 17 - 32 Titre : Cubic map algebra functions for spatio-temporal analysis Type de document : Article/Communication Auteurs : J. Mennis, Auteur ; R. Viger, Auteur ; C. Dana Tomlin, Auteur Année de publication : 2005 Article en page(s) : pp 17 - 32 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] analyse spatio-temporelle [Termes IGN] dimension temporelle [Termes IGN] données spatiotemporelles [Termes IGN] Etats-Unis [Termes IGN] flore locale [Termes IGN] Map Algebra [Termes IGN] occupation du sol [Termes IGN] système d'information géographique [Termes IGN] télédétection spatiale [Termes IGN] tessellation [Termes IGN] voxel Résumé : (Auteur) We propose an extension of map algebra to three dimensions for spatio-temporal data handling. This approach yields a new class of map algebra functions that we call "cube functions". Whereas conventional map algebra functions operate on data layers representing two-dimensional space, cube functions operate on data cubes representing two-dimensional space over a third-dimensional period of time. We describe the prototype implementation of a spatio-temporal data structure and selected cube function versions of conventional local, focal and zonal map algebra functions. The utility of cube functions is demonstrated through a case study analysing the spatio-temporal variability of remotly sensed, southeastern U.S. vegetation character over various land covers and during different El Nino/Southeastern Oscillation (ENSO) phases. Like conventional map algebra, the application of cube functions may demand significant data prepocessing when integrating diverse data sets, and are subject to limitations related to data storage and algorithm performance. Solutions to these issues include extending data compression and computing strategies for calculations on very large data volumes to spatio-temporal data handling. Numéro de notice : A2005-135 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/1523040053270765 En ligne : https://doi.org/10.1559/1523040053270765 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27273 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Individual differences in map reading spatial abilities using perceptual and memory processes / R.E. Lloyd in Cartography and Geographic Information Science, vol 32 n° 1 (January 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 1 (January 2005) . - pp 33 - 46 Titre : Individual differences in map reading spatial abilities using perceptual and memory processes Type de document : Article/Communication Auteurs : R.E. Lloyd, Auteur ; R.L. Bunch, Auteur Année de publication : 2005 Article en page(s) : pp 33 - 46 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie [Termes IGN] cognition [Termes IGN] lecture de carte [Termes IGN] mémoire [Termes IGN] modélisation [Termes IGN] perception [Termes IGN] raisonnement spatial [Termes IGN] vision Résumé : (Auteur) "Central to spatial intelligence are the capabilities to percieve the visual world accurately, to perform transformations and modifications upon one's initial perceptions, and to be able to re-create aspects of one's visual experiences, even in the absence of relevant physiscal stimulation. One can be asked to produce forms or simply to manipulate those that have provided." [Gardner (1983) Frames of mind : a theory of multiple intelligences. p173] The above quote is from a book on multiple intelligences that argues spatial inteligence is one of seven human intelligences. [...] The purpose of the current study is to consider the variation of the spatial ability related to map reading that might be explained by both biological and environmental variables. The basic problem was to conduct a map reading experiment that would require subjects to use both perceptual and memory processes. The research objective of the study was to model the variation of the efficiency of human performance on map-reading tasks with variables related to the nature of the task and the map readers. Numéro de notice : A2005-136 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/1523040053270774 En ligne : https://doi.org/10.1559/1523040053270774 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27274 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Deriving new minimum cost pathways from existing paths / Denis J. Dean in Cartography and Geographic Information Science, vol 32 n° 1 (January 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 1 (January 2005) . - pp 47 - 60 Titre : Deriving new minimum cost pathways from existing paths Type de document : Article/Communication Auteurs : Denis J. Dean, Auteur Année de publication : 2005 Article en page(s) : pp 47 - 60 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] chemin le moins coûteux, algorithme du [Termes IGN] Colorado (Etats-Unis) [Termes IGN] forêt [Termes IGN] itinéraire [Termes IGN] parc naturel régional [Termes IGN] programmation linéaire [Termes IGN] réseau routier Résumé : (Auteur) Without a priori cell traversing cost data, conventional GIS-based techniques cannot be used to find minimum cost paths from specified starting points to specified ending points. However, in one class of problems where these costs do not exist a priori, it may be possible to derive them. This class problem is characterized by the presence of an existing minimum cost path that is subject to the same traversing cost mechanics as the new path that is being contemplated. This study developed and evaluated linear programming-based techniques for deriving both isotropic and anisotropic traversing costs from existing minimum costs pathways. The derived costs can be used to find minimum cost routes for new pathways that are subject to the same cost mechanics as the existing pathways. The techniques presented here were evaluated by applying them to situation found in the forest road network of the Arapho and Roosevelt National Forest (ARNF) in Colorado. In 18 of the 19 situations evaluated, the predicted routes generated using the techniques presented here agreed with actual roads found in the ARNF. Numéro de notice : A2005-137 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article DOI : 10.1559/1523040053270738 En ligne : https://doi.org/10.1559/1523040053270738 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27275 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible