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Change detection in high-resolution land use/land cover geodatabases (at object level) / Emilio Domenech (01/04/2014)Documents numériques
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eurosdr_no64_a-1_1.pdfAdobe Acrobat PDF How reliable are citizen-derived scientific data? Assessing the quality of contrail observations made by the general public / Amy Fowler in Transactions in GIS, vol 17 n° 4 (August 2013)
[article]
Titre : How reliable are citizen-derived scientific data? Assessing the quality of contrail observations made by the general public Type de document : Article/Communication Auteurs : Amy Fowler, Auteur ; J. Duncan Whyatt, Auteur ; Gemma Davies, Auteur ; Rebecca Ellis, Auteur Année de publication : 2013 Article en page(s) : pp 488 - 506 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] Angleterre
[Termes IGN] atmosphère terrestre
[Termes IGN] condensation
[Termes IGN] données localisées des bénévoles
[Termes IGN] données météorologiques
[Termes IGN] données multisources
[Termes IGN] fiabilité des données
[Termes IGN] grand public
[Termes IGN] science citoyenneRésumé : (Auteur) Citizen science projects encourage the general public to participate in scientific research. Participants can contribute large volumes of data over broad spatial and temporal frames; however, the challenge is to generate data of sufficient quality to be useable in scientific research. Most observations made by citizen-scientists can be independently verified by “experts”. However, verification is more problematic when the phenomena being recorded are short-lived. This article uses a GIS methodology to verify the quality of contrail observations made by the general public as part of the OPAL Climate Survey. We verify observations using datasets derived from a variety of different sources (experts, models and amateur enthusiasts) with different spatial and temporal properties which reflect the complex 3D nature of the atmosphere. Our results suggest that ~70% of citizen observations are plausible, based on favorable atmospheric conditions and the presence or absence of aircraft; a finding which is in keeping with other, more conventional citizen science projects. However, questions remain as to why the quality of the citizen-based observations was so high. Given the lack of supporting data on observers, it is impossible to determine whether the dataset was generated by the activities of many participants or a small but dedicated number of individual observers. Numéro de notice : A2013-468 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12034 Date de publication en ligne : 22/05/2013 En ligne : https://doi.org/10.1111/tgis.12034 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32606
in Transactions in GIS > vol 17 n° 4 (August 2013) . - pp 488 - 506[article]Assessing the effect of data imports on the completeness of OpenStreetMap: a United States case study / Dennis Zielstra in Transactions in GIS, vol 17 n° 3 (June 2013)
[article]
Titre : Assessing the effect of data imports on the completeness of OpenStreetMap: a United States case study Type de document : Article/Communication Auteurs : Dennis Zielstra, Auteur ; Hartwig H. Hochmair, Auteur ; Pascal Neis, Auteur Année de publication : 2013 Article en page(s) : pp 315 - 334 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] données multisources
[Termes IGN] Etats-Unis
[Termes IGN] exhaustivité des données
[Termes IGN] intégration de données
[Termes IGN] OpenStreetMap
[Termes IGN] qualité des données
[Termes IGN] réseau routierRésumé : (Auteur) The assessment of OpenStreetMap (OSM) data quality has become an interdisciplinary research area over the recent years. The question of whether the OSM road network should be updated through periodic data imports from public domain data, or whether the currency of OSM data should rather rely on more traditional data collection efforts by active contributors, has led to perpetual debates within the OSM community. A US Census TIGER/Line 2005 import into OSM was accomplished in early 2008, which generated a road network foundation for the active community members in the US. In this study, we perform a longitudinal analysis of road data for the US by comparing the development of OSM and TIGER/Line data since the initial TIGER/Line import. The analysis is performed for the 50 US states and the District of Columbia, and 70 Urbanized Areas. In almost all tested states and Urbanized Areas, OSM misses roads for motorized traffic when compared with TIGER/Line street data, while significant contributions could be observed in pedestrian related network data in OSM compared with corresponding TIGER/Line data. We conclude that the quality of OSM road data could be improved through new OSM editor tools allowing contributors to trace current TIGER/Line data. Numéro de notice : A2013-286 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12037 Date de publication en ligne : 28/05/2013 En ligne : https://doi.org/10.1111/tgis.12037 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32424
in Transactions in GIS > vol 17 n° 3 (June 2013) . - pp 315 - 334[article]Thinking outside the disciplinary box in coping with dilemmas in geoinformation management for public policy / W.H. ERIK DE Man in Transactions in GIS, vol 17 n° 3 (June 2013)
[article]
Titre : Thinking outside the disciplinary box in coping with dilemmas in geoinformation management for public policy Type de document : Article/Communication Auteurs : W.H. ERIK DE Man, Auteur Année de publication : 2013 Article en page(s) : pp 452 - 462 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] aide à la décision
[Termes IGN] analyse de données
[Termes IGN] données localisées
[Termes IGN] données multisources
[Termes IGN] information complexe
[Termes IGN] intégration de données
[Termes IGN] politique publique
[Termes IGN] surveillanceRésumé : (Auteur) Notwithstanding optimistic rhetoric about integrating geospatial data from different sources and supporting good governance, much of the literature on geoinformation management is limited to a technical orientation with a positivist paradigm. Complex geoinformation management, like public policy, must go beyond these boundaries. The article calls attention to the underexposed role of dilemmas in geoinformation management and how to cope with them. It uses lessons from the development of ‘integrated surveys’ at the former International Training Centre for Aerial Survey (ITC) in The Netherlands as an early and practical case of managing geoinformation for public policy some 40 years ago. These lessons are apparently also relevant to modern digital geoinformation management, as in SDI. Focus on public policy requires not only integration of geospatial data from different sources but also integration of geoinformation into complex decision-making processes. This complexity probably creates dilemmas because of mutually incompatible perspectives between different actors on what is to be managed. Geoinformation management for public policy therefore requires the ability to find, over and over again, a common ground between and beyond incompatible perspectives. The article proposes a ‘transdisciplinary’ framing of geoinformation management to support the required thinking outside the box. Numéro de notice : A2013-293 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12008 Date de publication en ligne : 08/01/2013 En ligne : https://doi.org/10.1111/tgis.12008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32431
in Transactions in GIS > vol 17 n° 3 (June 2013) . - pp 452 - 462[article]Les utilisateurs ont-ils trop de fournisseurs ? / Françoise de Blomac in SIG la lettre, n° 144 (février 2013)
[article]
Titre : Les utilisateurs ont-ils trop de fournisseurs ? Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2013 Article en page(s) : pp 2 - 4 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] données multisources
[Termes IGN] hétérogénéité
[Termes IGN] logiciel de cartographie
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Rares sont les collectivités, bureaux d'études, entreprises et organismes de toutes sortes qui n'utilisent qu'un seul SIG, qui sont clients d'un unique éditeur. Même si l'interopérabilité est devenue plus qu'un discours, ces situations d'hétérogénéité restent complexes à gérer et coûtent fort cher. Numéro de notice : A2013-146 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32284
in SIG la lettre > n° 144 (février 2013) . - pp 2 - 4[article]Réservation
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