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The political economy of spatial data infrastructures / Luis Felipe Alvarez León in International journal of cartography, vol 4 n° 2 (June 2018)  

Public [article]  inInternational journal of cartography > vol 4 n° 2 (June 2018) . - pp 151 - 169 Titre : The political economy of spatial data infrastructures Type de document : Article/Communication Auteurs : Luis Felipe Alvarez León, Auteur Année de publication : 2018 Article en page(s) : pp 151 - 169 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] données localisées [Termes IGN] données numériques [Termes IGN] économie politique [Termes IGN] Etats-Unis [Termes IGN] infrastructure européenne de données localisées [Termes IGN] infrastructure nationale des données localisées Résumé : (Auteur) This article explores the political economy of spatial data infrastructures (SDIs) by focusing on three key elements: (1) legal framework, (2) politics, and (3) their potential for economic impact. Empirically, the article draws specifically from the experiences of Infrastructure for Spatial Information in the European Community, in the European Union and the National Spatial Data Infrastructure, in the United States, which are representative of projects in advanced stages of implementation that nonetheless have evolved within very different legal regimes and political-administrative contexts. The article argues that SDIs are both technical and political projects that simultaneously respond to interscalar political dynamics characteristic to particular administrative arrangements. These dynamics are reflected in their respective legal frameworks governing SDIs in each jurisdiction, which are in flux due to the technological changes in geographic information and its role in society. The combination of these factors influences the role played in politics, government, and society by each SDI, while shaping its potential for economic impact. Numéro de notice : A2018-419 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2017.1371475 Date de publication en ligne : 06/11/2017 En ligne : https://doi.org/10.1080/23729333.2017.1371475 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90916 [article]

2000 Years of ‘globes vs. maps’ – lessons (to be) learned / Florian Hrubi in International journal of cartography, vol 4 n° 2 (June 2018)  

Public [article]  inInternational journal of cartography > vol 4 n° 2 (June 2018) . - pp 186 - 200 Titre : 2000 Years of ‘globes vs. maps’ – lessons (to be) learned Type de document : Article/Communication Auteurs : Florian Hrubi, Auteur ; Andreas Riedl, Auteur Année de publication : 2018 Article en page(s) : pp 186 - 200 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] globe [Termes IGN] histoire de la cartographie [Termes IGN] planisphère [Termes IGN] raccord cartographique [Termes IGN] représentation cartographique [Vedettes matières IGN] Cartologie Résumé : (Auteur) This paper sheds light on the question of whether globes or maps are best suited to providing an adequate understanding of global phenomena. Drawing upon evidence from the history of cartography, we show how the ancient, medieval and early sixteenth-century mapmakers had already recognized the importance of globes and world maps. An analysis of Ptolemy, Strabo and the negotiations around the Treaty of Tordesillas will demonstrate how our basic assumptions regarding the relationships of globes and world maps have been present for a long time. These assumptions are discussed in the light of current user studies on world maps, for example on distance and area estimations and the issue of peripheral continuity. As we can see from this review of empirical research, designing an appropriate world map is not only an issue of map projection; the edge of a world map also affects the knowledge users may generate. In terms of the importance of ‘globes vs. world maps’, these findings indicate that globes are prominent because of their undistorted, but also seamless visualization of global phenomena. Numéro de notice : A2018-427 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2017.1422097 Date de publication en ligne : 22/03/2018 En ligne : https://doi.org/10.1080/23729333.2017.1422097 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90917 [article]

The map as knowledge base / Dalia E. Varanka in International journal of cartography, vol 4 n° 2 (June 2018)  

Public [article]  inInternational journal of cartography > vol 4 n° 2 (June 2018) . - pp 201 - 223 Titre : The map as knowledge base Type de document : Article/Communication Auteurs : Dalia E. Varanka, Auteur ; E. Lynn Usery, Auteur Année de publication : 2018 Article en page(s) : pp 201 - 223 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] base de connaissances [Termes IGN] carte [Termes IGN] interface utilisateur [Termes IGN] modèle logique de données [Termes IGN] PostgreSQL [Termes IGN] SPARQL [Termes IGN] visualisation cartographique [Termes IGN] web sémantique Résumé : (Auteur) This paper examines the concept and implementation of a map as a knowledge base. A map as a knowledge base means that the visual map is not only the descriptive compilation of data and design principles, but also involves a compilation of semantic propositions and logical predicates that create a body of knowledge organized as a map. The digital product of a map as knowledge base can be interpreted by machines, as well as humans, and can provide access to the knowledge base through interfaces to select features and other information from the map. The design of maps as a knowledge base involves technical approaches and a system architecture to support a knowledge base. This paper clarifies how a map as a knowledge base differs from earlier map theory models by investigating the knowledge-based concepts of implementation through logical modelling, a knowledge repository, user interfaces for information access, and cartographic visualization. The paper ends with proof of concepts for two types of cartographic data query. Numéro de notice : A2018-426 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2017.1421004 Date de publication en ligne : 20/05/2018 En ligne : https://doi.org/10.1080/23729333.2017.1421004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90919 [article]

Minimum distortion pointed-polar projections for world maps by applying graticule transformation / Janos Gyorffy in International journal of cartography, vol 4 n° 2 (June 2018)  

Public [article]  inInternational journal of cartography > vol 4 n° 2 (June 2018) . - pp 224 - 240 Titre : Minimum distortion pointed-polar projections for world maps by applying graticule transformation Type de document : Article/Communication Auteurs : Janos Gyorffy, Auteur Année de publication : 2018 Article en page(s) : pp 224 - 240 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections [Termes IGN] carroyage géographique [Termes IGN] planisphère Résumé : (Auteur) Both the media and the geosciences often use small-scale world maps for demonstrating global phenomena. The most important demands on the projection of these maps are: (1) the map distortions have to be reduced as much as possible; (2) the outline shape of the mapped Earth must remind the viewer of the Globe. If the map theme to be illustrated requires neither equivalency (nor, which rarely happens, conformality) nor prescriptions for the map graticule, an aphylactic non-conical projection with simultaneously minimized angular and area distortions is advisable. In this paper, a graticule transformation by a parameterizable function helps to convert minimum distortion pointed-polar pseudocylindrical projections for world maps into general non-conical projections with further minimized distortions. The maximum curvature of the outline shape will be moderated at the same time in order to obtain a definitely pointed-polar character. Numéro de notice : A2018-425 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/23729333.2018.1455263 Date de publication en ligne : 07/05/2018 En ligne : https://doi.org/10.1080/23729333.2018.1455263 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90920 [article]