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Exemplaires(2)
| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 079-09011 | RAB | Revue | Centre de documentation | En réserve L003 | Disponible |
| 079-09012 | RAB | Revue | Centre de documentation | En réserve L003 | Disponible |
Dépouillements
Ajouter le résultat dans votre panierA kernel density estimation method for networks, its computational method and a GIS-based tool / Atsuyuki Okabe in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)
Titre : A kernel density estimation method for networks, its computational method and a GIS-based tool Type de document : Article/Communication Auteurs : Atsuyuki Okabe, Auteur ; T. Satoh, Auteur ; K. Sugiharas, Auteur Année de publication : 2009 Article en page(s) : pp 7 - 32 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] densité des points
[Termes IGN] erreur systématique
[Termes IGN] estimation par noyau
[Termes IGN] implémentation (informatique)
[Termes IGN] module d'extension
[Termes IGN] noeud
[Termes IGN] réseau routier
[Termes IGN] système d'information géographique
[Termes IGN] visualisation de donnéesRésumé : (Auteur) We develop a kernel density estimation method for estimating the density of points on a network and implement the method in the GIS environment. This method could be applied to, for instance, finding 'hot spots' of traffic accidents, street crimes or leakages in gas and oil pipe lines. We first show that the application of the ordinary two-dimensional kernel method to density estimation on a network produces biased estimates. Second, we formulate a 'natural' extension of the univariate kernel method to density estimation on a network, and prove that its estimator is biased; in particular, it overestimates the densities around nodes. Third, we formulate an unbiased discontinuous kernel function on a network. Fourth, we formulate an unbiased continuous kernel function on a network. Fifth, we develop computational methods for these kernels and derive their computational complexity; and we also develop a plug-in tool for operating these methods in the GIS environment. Sixth, an application of the proposed methods to the density estimation of traffic accidents on streets is illustrated. Lastly, we summarize the major results and describe some suggestions for the practical use of the proposed methods. Numéro de notice : A2009-125 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802475491 En ligne : https://doi.org/10.1080/13658810802475491 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29755
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 7 - 32[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Event-based topology for dynamic planar areal objects Type de document : Article/Communication Auteurs : J. Jiang, Auteur Année de publication : 2009 Article en page(s) : pp 33 - 60 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] arbre (mathématique)
[Termes IGN] changement d'occupation du sol
[Termes IGN] graphe
[Termes IGN] langage de modélisation
[Termes IGN] objet géographique zonal
[Termes IGN] relation topologiqueRésumé : (Auteur) Representation and reasoning about dynamic spatial phenomena requires at its foundation a formalism of spatial change. This paper extends our understanding of topological change, by providing a classification and analysis of events associated with changes in topological structures of spatial areal objects as they evolve through time. Tree structures are employed to represent topological relationships between regions and holes of areal objects. Basic and complex changes are specified using structure-preserving mappings between trees. Furthermore, the paper constructs a normal form, and proves that it is the 'simplest' form that can represent all the changes under consideration. Copyright Taylor & Francis Numéro de notice : A2009-126 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802577247 En ligne : https://doi.org/10.1080/13658810802577247 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29756
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 33 - 60[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : An improved fuzzy Kappa statistic that accounts for spatial autocorrelation Type de document : Article/Communication Auteurs : Alex Hagen-Zanker, Auteur Année de publication : 2009 Article en page(s) : pp 61 - 73 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] autocorrélation spatiale
[Termes IGN] Kappa de Cohen
[Termes IGN] logique floue
[Termes IGN] voisinage (relation topologique)Résumé : (Auteur) The Fuzzy Kappa statistic expresses the agreement between two categorical raster maps. The statistic goes beyond cell-by-cell comparison and gives partial credit to cells based on the categories found in the neighborhood. When matching categories are found at shorter distances the agreement is higher. Like the well-established Kappa statistic the Fuzzy Kappa statistic expresses the mean agreement relative to the expected agreement. The model underlying the expected agreement assumes absence of spatial autocorrelation in both compared maps. In reality however, spatial autocorrelation does lower the expected agreement as matching categories become less likely to be found close-by. Since most maps have some degree of spatial autocorrelation, the calculated expected agreement is generally higher than the true expected agreement. This leads to counterintuitive results when maps that appear to have considerable agreement obtain negative Fuzzy Kappa values. Furthermore, the Fuzzy Kappa may be biased, as it systematically attributes lower agreement to maps with stronger spatial autocorrelation. This paper proposes an improved Fuzzy Kappa statistic that is based on the same local agreement and has the same attractive properties as the original Fuzzy Kappa. The novelty is that the new statistic accounts for spatial autocorrelation, such that the expected Fuzzy Kappa for maps that are not cross-correlated is equal to zero. The improved statistic is applied on two cases to demonstrate its properties. Copyright Taylor & Francis Numéro de notice : A2009-127 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802570317 En ligne : https://doi.org/10.1080/13658810802570317 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29757
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 61 - 73[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Detection of multi-scale clusters in network space Type de document : Article/Communication Auteurs : S. Shiode, Auteur ; N. Shiode, Auteur Année de publication : 2009 Article en page(s) : pp 75 - 92 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse de données
[Termes IGN] analyse de groupement
[Termes IGN] diagramme de Voronoï
[Termes IGN] données multiéchelles
[Termes IGN] espace euclidien
[Termes IGN] réseau routier
[Termes IGN] triangulation de DelaunayRésumé : (Auteur) This paper proposes a new type of point-pattern analytical method, Network-Based Variable-Distance Clumping Method (NT-VCM), to analyse the distribution pattern of point objects and phenomena observed on a network. It is an extension of Planar Variable-Distance Clumping Method (PL-VCM) that was previously defined for point pattern analysis in Euclidian space. The purpose for developing NT-VCM is to identify point agglomerations across different scales called multi-scale network-based clumps among distributed points along a network. The paper first defines a network-based clump as a set of points where all its elements are found within a certain shortest-path distance from at least one other element of the same set. It then proposes NT-VCM as a technique to extract statistically significant multi-scale clumps on a network. The paper also proposes an efficient algorithm for computing NT-VCM, which involves the use of the Voronoi diagram, the Delaunay diagram and the minimum spanning tree that are adapted and newly extended for the purpose of analysis on a network. A comparative study of NT-VCM and PL-VCM using commercial facility data reveals a notable difference in the location as well as the size of the significant multi-scale clumps detected in the both cases. Results from the empirical study confirm that NT-VCM accounts for the actual network distance between the points, thus providing a more accurate description of point agglomerations along the network than PL-VCM does. Copyright Taylor & Francis Numéro de notice : A2009-128 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810801949843 En ligne : https://doi.org/10.1080/13658810801949843 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29758
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 75 - 92[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Extracting geographic features from the Internet to automatically build detailed regional gazetteers Type de document : Article/Communication Auteurs : D. Goldberg, Auteur ; J. Wilson, Auteur ; Craig A. Knoblock, Auteur Année de publication : 2009 Article en page(s) : pp 93 - 128 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] acquisition de données
[Termes IGN] extraction de données
[Termes IGN] internet
[Termes IGN] objet géographique
[Termes IGN] répertoire toponymiqueRésumé : (Auteur) The utility of every imaginable application which incorporates a gazetteer hinges on the simple fact that the resulting system will only be as useful, complete, or accurate as the underlying gazetteer itself. A major issue confronting gazetteers utilized in systems today is that they are not complete and measures of their accuracy are largely unknown. In this paper we describe a methodology which addresses this problem by automatically generating highly complete and detailed regional gazetteers from Internet sources. We utilize information extraction and integration techniques to automatically obtain geographic features and associated footprints and feature types from freely and widely available online data which could be applied to create a gazetteer for nearly any area. We discuss the distinguishing characteristics of the generated gazetteer and extend previous work to define measures which can be used to assess the completeness and accuracy of gazetteers. Using these measures, the generated gazetteer is evaluated against the Alexandria Digital Library Gazetteer and the Los Angeles Comprehensive Bibliographic Database. Our results indicate that a gazetteer created by our methods will be at least as complete as any gazetteer currently available for certain feature classes, while falling short in others. We conclude by offering suggestions to address these shortcomings. Copyright Taylor & Francis Numéro de notice : A2009-129 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802577262 En ligne : https://doi.org/10.1080/13658810802577262 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29759
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 93 - 128[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Geostastical modeling of sedimentological parameters using multi-scale terrain variables: application along the Belgian part of the North sea Type de document : Article/Communication Auteurs : Els Verfaillie, Auteur ; I. Du Four, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 135 - 150 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] Belgique
[Termes IGN] données multisources
[Termes IGN] écosystème
[Termes IGN] habitat animal
[Termes IGN] krigeage
[Termes IGN] modèle numérique bathymétrique
[Termes IGN] modélisation spatio-temporelle
[Termes IGN] Nord, mer du
[Termes IGN] représentation multiple
[Termes IGN] sédimentRésumé : (Auteur) In the nowadays highly pressurized marine environment, a science-based approach to management becomes increasingly important. In many cases, the sediment nature and processes are the key to the understanding of the marine ecosystem, and can explain particularly the presence of soft-substrata habitats. For predictions of the occurrence of species and habitats, detailed sedimentological information is required. This paper presents a methodology to create high quality sedimentological data grids of grain-size fractions and the percentage of silt-clay. Based on a multibeam bathymetry terrain model, multiple sources of secondary information (multi-scale terrain variables) were derived. Through the use of the geostatistical technique, Kriging with an external drift (KED), this secondary information was used to assist in the interpolation of the sedimentological data. For comparison purposes, the more commonly used Ordinary Kriging technique was also applied. Validation indices indicated that KED gave better results for all of the maps. Copyright Taylor & Francis Numéro de notice : A2009-130 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810802184135 En ligne : https://doi.org/10.1080/13658810802184135 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29760
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 135 - 150[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Sensitivity analysis of spatial models Type de document : Article/Communication Auteurs : Linda Lilburne, Auteur ; S. Tarantola, Auteur Année de publication : 2009 Article en page(s) : pp 151 - 168 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse de sensibilité
[Termes IGN] analyse spatiale
[Termes IGN] contamination
[Termes IGN] eau souterraine
[Termes IGN] méthode de Monte-Carlo
[Termes IGN] nitrateRésumé : (Auteur) Sensitivity analysis is the study of how uncertainty in model predictions is determined by uncertainty in model inputs. A global sensitivity analysis considers the potential effects from the simultaneous variation of model inputs over their finite range of uncertainty. A number of techniques are available to carry out global sensitivity analysis from a set of Monte Carlo simulations; some techniques are more efficient than others, depending on the strategy used to sample the uncertainty of model inputs and on the formulae employed for estimating sensitivity measures. The most common approaches are summarised in this paper by focusing on the limitations of each in the context of a sensitivity analysis of a spatial model. A novel approach for undertaking a spatial sensitivity analysis (based on the method of Sobol' and its related improvements) is proposed and tested. This method makes no assumptions about the model and enables the analysis of spatially distributed, uncertain inputs. The proposed approach is illustrated with a simple test model and a groundwater contaminant model. Copyright Taylor & Francis Numéro de notice : A2009-131 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802094995 En ligne : https://doi.org/10.1080/13658810802094995 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29761
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 151 - 168[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : A theoretical approach to the use of cyberinfrastructure in geographical analysis Type de document : Article/Communication Auteurs : Shaowen Wang, Auteur ; Marc P. Armstrong, Auteur Année de publication : 2009 Article en page(s) : pp 169 - 193 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatiale
[Termes IGN] données maillées
[Termes IGN] géostatistique
[Termes IGN] interpolation inversement proportionnelle à la distance
[Termes IGN] représentation spatiale
[Termes IGN] traitement parallèle
[Termes IGN] transformation mathématiqueRésumé : (Auteur) This paper presents a theoretical approach that has been developed to capture the computational intensity and computing resource requirements of geographical data and analysis methods. These requirements are then transformed into a common framework, a grid-based representation of a spatial computational domain, which supports the efficient use of emerging cyberinfrastructure environments. Two key types of transformational functions (data-centric and operation-centric) are identified and their relationships are explained. The application of the approach is illustrated using two geographical analysis methods: inverse distance weighted interpolation and the ./TGIS_A_292016_O_XML_IMAGES/TGIS_A_292016_O_ILM0001.gif spatial statistic. We describe the underpinnings of these two methods, present their conventional sequential algorithms, and then address their latent parallelism based on a spatial computational domain representation. Through the application of this theoretical approach, the development of domain decomposition methods is decoupled from specific high-performance computer architectures and task scheduling implementations, which makes the design of generic parallel processing solutions feasible for geographical analyses. Copyright Taylor & Francis Numéro de notice : A2009-132 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810801918509 En ligne : https://doi.org/10.1080/13658810801918509 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29762
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 169 - 193[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Developing geographic information infrastructures: the role of access policies Type de document : Article/Communication Auteurs : Bastiaan Van Loenen, Auteur Année de publication : 2009 Article en page(s) : pp 195 - 212 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] accès aux données localisées
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] politique communautaire
[Termes IGN] politique publiqueRésumé : (Auteur) Within societies, information availability is a key issue affecting society's well-being. For geographic information, a geographic information infrastructure (GII) facilitates availability and access to geographic information for all levels of government, the commercial sector, the non-profit sector, academia, and ordinary citizens. Although the importance of access policies in the development of a GII is commonly understood, research that has assessed the impact of access policies on this development is scant. This article adds this perspective. Based on information acquired from case-study and literature research, the author argues that open-access policies do not always promote GII development and in specific instances are counter-productive. These findings may explain why many nations still adhere to cost-recovery policies instead of following access policies recommended by research. The article provides alternatives for changing current policies into new access policies that promote GII development. Copyright Taylor & Francis Numéro de notice : A2009-133 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701851412 En ligne : https://doi.org/10.1080/13658810701851412 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29763
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 195 - 212[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Computation of the third-order partial derivatives from a digital elevation model Type de document : Article/Communication Auteurs : Igor V. Florinsky, Auteur Année de publication : 2009 Article en page(s) : pp 213 - 231 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] filtrage du bruit
[Termes IGN] modèle numérique de surface
[Termes IGN] réseau de drainageRésumé : (Auteur) Loci of extreme curvature of the topographic surface may be defined by the derivation function (T) depending on the first-, second-, and third-order partial derivatives of elevation. The loci may partially describe ridge and thalweg lines. The first- and second-order partial derivatives are commonly calculated from a digital elevation model (DEM) by fitting the second-order polynomial to a 3times3 window. This approach cannot be used to compute the third-order partial derivatives and T. We deduced formulae to estimate the first-, second-, and third-order partial derivatives from a DEM fitting the third-order polynomial to a 5times5 window. The polynomial is approximated to elevation values of the window. This leads to a local denoising that may enhance calculations. Under the same grid size of a DEM and root mean square error (RMSE) of elevation, calculation of the second-order partial derivatives by the method developed results in significantly lower RMSE of the derivatives than that using the second-order polynomial and the 3times3 window. An RMSE expression for the derivation function is deduced. The method proposed can be applied to derive any local topographic variable, such as slope gradient, aspect, curvatures, and T. Treatment of a DEM by the method developed demonstrated that T mapping may not substitute regional logistic algorithms to detect ridge/thalweg networks. However, the third-order partial derivatives of elevation can be used in digital terrain analysis, particularly, in landform classifications. Copyright Taylor & Francis Numéro de notice : A2009-134 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810802527499 En ligne : https://doi.org/10.1080/13658810802527499 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29764
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 213 - 231[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : A spatiotemporal data model for river basin-scale hydrologic systems Type de document : Article/Communication Auteurs : J.L. Goodall, Auteur ; D. Maidment, Auteur Année de publication : 2009 Article en page(s) : pp 233 - 247 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] bassin hydrographique
[Termes IGN] information géographique
[Termes IGN] intégration de données
[Termes IGN] modèle hydrographique
[Termes IGN] modélisation spatio-temporelle
[Termes IGN] réseau hydrographique
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Despite a long history of synergy, current techniques for integrating Geographic Information System (GIS) software with hydrologic simulation models do not fully utilize the potential of GIS for modeling hydrologic systems. Part of the reason for this is a lack of GIS data models appropriate for representing fluid flow in space and time. Here we address this challenge by proposing a spatiotemporal data model designed specifically for large-scale river basin systems. The data model builds from core concepts in geographic information science and extends these concepts to accommodate mathematical representations of fluid flow at a regional scale. Space-time is abstracted into three basic objects relevant to hydrologic systems: a control volume, a flux and a flux coupler. A control volume is capable of storing mass, energy or momentum through time, a flux represents the movement of these quantities within space-time and a flux coupler insures conservation of the quantities within an overall system. To demonstrate the data model, a simple case study is presented to show how the data model could be applied to digitally represent a river basin system. Copyright Taylor & Francis Numéro de notice : A2009-135 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802032193 En ligne : https://doi.org/10.1080/13658810802032193 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29765
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 233 - 247[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Cross-agency coordination in the shadow of hierarchy: 'joining up' government geospatial information systems Type de document : Article/Communication Auteurs : K.T. Lance, Auteur Année de publication : 2009 Article en page(s) : pp 249 - 269 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] intégration de données
[Termes IGN] métadonnées géographiques
[Termes IGN] Organisation gouvernementaleRésumé : (Auteur) Government agencies striving to make geospatial information systems interoperable and cost-effective often appear to function as a self-regulating network shaped only by internal trust and reciprocity. However, recent public management research suggests that external steering of a network, exercised by authoritative bodies through hierarchical means, may invigorate cross-agency coordination. The two case studies of federal geospatial coordination in Canada and the USA confirm this emerging theory of network-hierarchy dynamics. In these countries, the central budget agency (CBA) is influencing resource flows and accountabilities within a federal geospatial network of government agencies, which in turn affects how these agencies deliver 'joined up' services. The CBA relies upon three types of tools: the shaping of network governing structures, promotion of uptake of new management information systems, and the use of evaluation (scrutiny) to solidify accountabilities of the network. Since these tools cast a shadow of hierarchy upon the network, they may be viewed as counter to the voluntary ethos of networks. However, the case studies suggest that the CBA's actions appear to confer legitimacy to the network—resulting in a seeming contradiction—greater central control, more vigorous, distributed geospatial coordination. Copyright Taylor & Francis Numéro de notice : A2009-136 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810801909615 En ligne : https://doi.org/10.1080/13658810801909615 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29766
in International journal of geographical information science IJGIS > vol 23 n° 1-2 (january 2009) . - pp 249 - 269[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-09011 RAB Revue Centre de documentation En réserve L003 Disponible 079-09012 RAB Revue Centre de documentation En réserve L003 Disponible
