Descripteur
Documents disponibles dans cette catégorie (2504)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Titre : Assessing spatial data infrastructures Type de document : Thèse/HDR Auteurs : Lucasz Grus, Auteur Editeur : Delft : Netherlands Geodetic Commission NGC Année de publication : 2010 Collection : Netherlands Geodetic Commission Publications on Geodesy, ISSN 0165-1706 num. 76 Importance : 170 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-90-6132-320-4 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] analyse comparative
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] qualité des données
[Termes IGN] structure de données localiséesRésumé : (Auteur) Over the last two decades many countries throughout the world have taken steps to establish national Spatial Data Infrastructures (SDls). These actions have sought to provide an infrastructure for accessing and sharing spatial data to reduce the duplication of spatial data collection by both users and producers, and enable better utilization of spatial data and associated services. When developing SDI initiatives it is increasingly important to assess their outcomes in order to justify the resources spent on those infrastructures. Many researchers throughout the world have been struggling with the issue of assessing SDls. The task is difficult due to complex, dynamic and constantly evolving nature of SDI.
The main objective of this thesis is to develop a framework for assessing Spatial Data Infrastructures. This main objective is divided into four sub-objectives: 1. to analyse SDI complexity; 2. to develop a SDI assessment framework; 3. to evaluate the developed SDI assessment framework; 4. to expand the developed SDI Assessment Framework by adding an assessment view for a goal-oriented SDI assessment. Each of these sub-objectives are analyzed in chapters 2 -5.
Chapter 2 analyses SDI complexity by determining whether SDls can be viewed as Complex Adaptive Systems (CAS). This was done by analyzing three NSDI case studies and conducting a survey among SDI experts. First, it was determined if CAS features and behaviours could be found in the three analyzed NSDls. The author searched for the following CAS features and behaviours: 1) features: components, complexity, sensitivity to initial conditions, openness, unpredictability and scale independence; 2) behaviours: adaptability, selforganization, non-linear behaviour, feedback loop mechanism. Second, a survey among SDI experts was conducted by asking them to express their strength of support regarding the presence of CAS features and behaviours in general SDI concept. The results reveal that SDls can be viewed as CAS.
Chapter 3 develops a SDI assessment framework. First, the key SDI characteristics that underlie the problems affecting SDI assessment were identified and analyzed. In order to deal with these problems the principles of assessing Complex Adaptive Systems were identified and discussed. The principles of evaluating Complex Adaptive Systems and norms of general evaluation theory were the basis for developing an assessment framework. The principles of assessing CAS, among others, require that the assessment framework is flexible, contains multiple assessment approaches and uses various methods to determine the indicators' values. The result is the Multi-view SDI assessment framework.
Chapter 4 evaluates the Multi-view SDI assessment framework. The evaluation was based on the pilot application of the framework in 21 National SDIs. The evaluation focused on the process of framework application and framework's applicability to assess SDIs. The process of framework application was evaluated against two criteria: 1) NSDI coordinator response time; 2) Completeness of data. The applicability of the framework to assess SDIs was evaluated by sending a questionnaire to 21 NSDI coordinators. The coordinators were asked for the opinion about the applicability of Multi-view SDI assessment framework application results to assess SDIs. The questionnaire was based on meta-evaluation standard criteria for conducting evaluations (Stufflebeam, 1974; The Joint Committee, 1994). The results showed that the framework could be applied to assess 21 NSDIs. The evaluation of the application process revealed that the completeness of assessment data and time needed to measure indicators depends strongly on the assessment methods used. In addition, the results showed that significant part of the measurements contained missing values. Finally it was demonstrated that the users tend to agree with the general applicability of the Multi-view SDI assessment framework to assess SDIs.
Chapter 5 expands the developed SDI Assessment Framework by adding an assessment view for a goal-oriented SDI assessment. The conceptual foundation of the developed assessment view was a goal-attainment assessment model presented by Hansen (2005). The model seeks to answer the question: to what degree has the goals been realized? The model derives the assessment criteria from goals. To develop a goal-oriented assessment view the author used the Multi-view SDI assessment framework. The developed assessment view was tested by applying it to measure the goals' realization of the Dutch SDI. In addition, the potential users of the goal-oriented assessment view evaluated it. The main result of this chapter is the view for assessing the extent to which SDIs realize their goals. The implementation of the proposed view in the Dutch SDI case demonstrates its potential application. In addition, the evaluation of the proposed view conducted among the potential users confirms its usability and generic character. It is also argued that the precision of definition of SDI goals determines how easy the correct assessment indicators can be found.
Chapter 6 discusses the results of the thesis, presents author's reflections on the main results, and suggests recommendations for the future research. In order to better assess SDIs researchers should look for theories, which could explain and help to understand SDI mechanisms and laws. The results show that viewing SDI as CAS is beneficial for better understanding of SDI assessment principles. As a result, the Multi-view SDI assessment framework is proposed. However, due to the practical reasons it is hypothesized that a fully comprehensive SDI assessment might never be achieved. The reflections on the thesis results lead to several conclusions. Firstly, viewing SDI as CAS, apart from helping to assess SDIs, has also a potential to significantly improve the conceptualization of SDI. Secondly, the proposed Multi-view SDI assessment framework demonstrates the potential value for SDI assessment users acting on all SDI organizational levels. Thirdly, the experience of developing an assessment framework for SDI may also be used in evaluation discipline to further analyze and propose solutions for assessing complex phenomena. Fourthly, the proposed framework has also potential to contribute to an emerging trend of the inter- and transdisciplinary approaches to researching and assessing SDIs. The following recommendations for the future research are made: 1) Analyze the roles that CAS features and behaviours play in SDIs; 2) Focus on developing operational SDI assessment approaches suited to specific user's needs; 3) Analyze the users and their requirements of SDI assessment; 4) Analyze the use of SDI assessment results.Note de contenu : 1. General Introduction
2. Spatial Data Infrastructures as Complex Adaptive Systems
3. Multi-view SDI Assessment Framework
4. Evaluation of the Multi-view SDI Assessment Framework
5. An assessment view to evaluate whether Spatial Data Infrastructures meet their goals
6. General Discussion 123 References
AppendicesNuméro de notice : 10446 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère DOI : sans En ligne : https://www.ncgeo.nl/downloads/76Grus.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62445 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 10446-01 37.00 Livre Centre de documentation Géomatique Disponible Assessing the accuracy of 'crowdsourced' data and its itegration with official spatial data sets / Maythm Al-Bakri (2010)
![]()
contenu dans Accuracy 2010 : Proceedings of the Ninth international symposium on spatial accuracy assessment in natural resources and environmental sciences, Leicester, UK, 20 - 23 juillet 2010 / Nicholas J. Tate (2010)
Titre : Assessing the accuracy of 'crowdsourced' data and its itegration with official spatial data sets Type de document : Article/Communication Auteurs : Maythm Al-Bakri, Auteur ; David Fairbairn, Auteur Editeur : Leicester [Royaume-Uni] : University of Leicester Année de publication : 2010 Conférence : Accuracy 2010, 9th international symposium on spatial accuracy assessment in natural resources and environmental sciences 20/07/2010 23/07/2010 Leicester Royaume-Uni OA Proceedings Importance : pp 317 - 320 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] cartographie collaborative
[Termes IGN] données localisées des bénévoles
[Termes IGN] intégration de données
[Termes IGN] précision de localisation
[Termes IGN] précision sémantique
[Termes IGN] production participative
[Termes IGN] qualité des donnéesRésumé : (auteur) A key challenge in supporting effective spatial data integration is the assessment of data quality from different sources. This paper presents a methodology for assessing positional and shape quality from formal data, such as Ordnance Survey (OS) and crowdsourced data , such as OpenStreetMap (OSM) information, with the intention of assessing possible integration. It is based on the measurement of discrepancies among the data sets : results show that the accuracy of OS data is very close to a reference data set, but the positional and shape accuracy of OSM data does not match the reference or the the OS data sets. Numéro de notice : C2010-033 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : sans En ligne : http://spatialaccuracy.org/wp-content/uploads/2021/08/Al-Bakri2010accuracy.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90932
Titre : Automatic creation of extents for forest names Type de document : Mémoire Auteurs : Ghislaine Convers, Auteur Editeur : Paris : Université de Paris 1 Panthéon Sorbonne Année de publication : 2010 Importance : 66 p. Format : 21 x 30 cm Note générale : Bibliographie
Internship report, Master 2 Carthagéo professionnelLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] Clarity (plateforme de généralisation)
[Termes IGN] environnement de développement
[Termes IGN] état de l'art
[Termes IGN] forêt
[Termes IGN] généralisation automatique de données
[Termes IGN] imprécision des données
[Termes IGN] limite indéterminée
[Termes IGN] objet géographique zonalIndex. décimale : DCAR Mémoires de l'ex DESS cartographie et du Master CARTHAGEO Résumé : (Auteur) Un projet de recherche de 5 mois réalisé au sein d'Ordnance Survey a permis d'étudier une méthodologie afin de créer une étendue pour les noms de forêts. Le projet a commencé par un état de l'art afin de comprendre les principaux concepts et définitions en jeu. Puis une enquête avec des cartographes et experts a permis de déterminer les principales pistes à suivre. La méthodologie fut implémentée avec le langage Java sur la plateforme Radius Clarity (ISpatial) sur la zone d'étude de la New Forest, au Sud de l'Angleterre. Les algorithmes ont été développés en utilisant les outils de topologie. Malgré des imperfections et limites dans les données en entrée, les premiers résultats apportent une meilleure définition de l'étendue des forêts nommées. Note de contenu : INTRODUCTION
1. CONTEXT OF THE INTERNSHIP: THE RESEARCH DEPARTMENT OF THE NATIONAL MAPPING AGENCY OF GREAT BRITAIN
1.1. General Context: Ordnance Survey
1.1.1. History of the Ordnance Survey
1.1.2. The main Ordnance Survey Products
1.1.3. The Research Department
1.1.4. The Computer Science expert pool
1.2. Presentation of the project: automatic creation of extents for a forest names
1.2.1. Presentation of the context: the Ordnance Survey maps and databases
1.2.2. The objectives of the internship: produce a methodology and implement it
1.2.3. Presentation of the plan and the steps of the project (Pert and Gantt)
2. STATE OF THE ART: WHAT IS A FOREST?
2.1. Definitions of forest
2.1.1. Different definitions of forest
2.1.2. Definitions used by Ordnance Survey
2.1.3. Research generalisation of forest
2.2. Definitions of Vagueness
2.2.1. Definition of boundaries
2.2.2. Concept and theories of vagueness
2.3. Presentation of input data
2.3.1. The named point instances
2.3.2. The named extent features
2.3.3. The Landcover woodlands
2.3.4. Non wooded topographic features
2.4. Case studied: presentation of the New Forest
2.4.1. History of the New Forest
2.4.2. Vegetation of the New Forest
3. DEVELOPMENT OF THE METHODOLOGY AND IMPLEMENTATION
3.1. The Survey in order to understand Ordnance Survey point of view
3.1.1. Objectives of the survey
3.1.2. Preparation of the maps for the survey
3.1.3. Conducting the survey
3.1.4. Results of the survey
3.2. The methodology
3.2.1. Development of the methodology
3.2.2. Implementation in Java language
4. EVALUATION OF RESULTS
4.1. Results
4.2. Evaluation
4.2.1. Conducting the evaluation
4.2.2. Results of the evaluation
4.3. Outlooks and improvements
4.3.1. Problems and limits
4.3.2. Improvements
CONCLUSIONNuméro de notice : 10964 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE/INFORMATIQUE Nature : Mémoire master cartographie Organisme de stage : Ordnance Survey Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=49461 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 10964-01 DCAR Livre Centre de documentation Travaux d'élèves Disponible
Titre : Building European spatial data infrastructures Type de document : Monographie Auteurs : Ian Masser, Auteur Mention d'édition : 2 Editeur : Redlands [Californie - Etats-Unis] : ESRI Press [Environmental Systems Research Institute] Année de publication : 2010 Importance : 96 p. Format : 19 x 23 cm ISBN/ISSN/EAN : 978-1-58948-266-1 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] directive européenne
[Termes IGN] données localisées de référence
[Termes IGN] INSPIRERésumé : (Editeur) Building European Spatial Data Infrastructures explores the efforts of the European Union to create a framework for a multinational infrastructure for spatial information in Europe (INSPIRE). In its second edition, the book presents an overview of the innovative activities being performed by both the public and private sector to comply with the INSPIRE Directive, and explains the rationale and the processes involved in SDI development and implementation. Designed as a reference for GIS professionals and decision makers, this book promotes a general understanding of SDI concepts and provides examples of practical applications. Note de contenu : Chapter 1 - the many uses of GIS
Chapter 2 - how GIS technology works and why we need SDIs
Chapter 3 - existing SDIs in Europe
Chapter 4 - developing a european SDI strategy: the INSPIRE initiative
Chapter 5 - prospects for the futureNuméro de notice : 20880 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63161 Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 20880-01 37.00 Livre Centre de documentation Géomatique Disponible Challenges for automated generalisation at European mapping agencies: a qualitative and quantitative analysis / T. Foesrster in Cartographic journal (the), vol 47 n° 1 (January 2010)
![]()
[article]
Titre : Challenges for automated generalisation at European mapping agencies: a qualitative and quantitative analysis Type de document : Article/Communication Auteurs : T. Foesrster, Auteur ; Jantien E. Stoter, Auteur ; Menno-Jan Kraak, Auteur Année de publication : 2010 Article en page(s) : pp 41 - 54 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] opérateur de généralisation
[Termes IGN] organisme cartographique national
[Termes IGN] qualité de généralisation
[Termes IGN] qualité des données
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) The automation of generalisation is an important issue at National Mapping Agencies (NMAs) to reduce data production costs and to improve data maintenance. This paper presents the challenges for automated generalisation at European NMAs integrating a qualitative and quantitative analysis. The qualitative analysis focuses on the current strategies for automated generalisation at NMAs. The quantitative analysis extends these findings and measures the status of automated generalisation functionality at NMAs using the required and missing generalisation operators as indicators. The results are interesting for the research community, the software vendors and NMAs to streamline their efforts to accomplish full automation of generalisation processes. Cartographic Journal Numéro de notice : A2010-081 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/000870409X12525737905123 Date de publication en ligne : 18/07/2013 En ligne : https://doi.org/10.1179/000870409X12525737905123 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30277
in Cartographic journal (the) > vol 47 n° 1 (January 2010) . - pp 41 - 54[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2010011 RAB Revue Centre de documentation En réserve L003 Disponible Combined integrity of GPS and Galileo / F. Kneissl in Inside GNSS, vol 5 n° 1 (January - February 2010)
PermalinkComment qualifier la précision et les notions d'échelle dans les métadonnées de nos séries de données [localisées] ? [version 3] / Commission de validation de données pour l'information spatialisée (2010)
PermalinkCréation d'un référentiel d'adresses des quartiers prioritaires de la politique de la ville à partir de la BD Adresse / I. Nefzi (2010)
PermalinkEffectiveness of cartogram for the representation of spatial data / Hui Sun in Cartographic journal (the), vol 47 n° 1 (January 2010)
PermalinkPermalinkPermalinkIn-flight quality assessment and data processing for airborne laser scanning / Philipp Schaer (2010)
PermalinkPermalinkIntégrer les coordonnées géographiques dans une analyse multivariée / Françoise de Blomac in SIG la lettre, n° 113 (janvier 2010)
PermalinkLocation-based algorithms for finding sets of corresponding objects over several geo-spatial data sets / E. Safra in International journal of geographical information science IJGIS, vol 24 n°1-2 (january 2010)
Permalink