Descripteur
Termes IGN > sciences humaines et sociales > économie > macroéconomie
macroéconomieVoir aussi |
Documents disponibles dans cette catégorie (1794)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Spatial distribution of coal quality parameters with respect to production requirements: an adaptive neuro-fuzzy application for the Can coal field (Turkey) / Ali Kayabasi in Geocarto international, vol 31 n° 1 - 2 (January - February 2016)
[article]
Titre : Spatial distribution of coal quality parameters with respect to production requirements: an adaptive neuro-fuzzy application for the Can coal field (Turkey) Type de document : Article/Communication Auteurs : Ali Kayabasi, Auteur ; Dilek Turer, Auteur ; Nurgul Yesiloglu-Gultekin, Auteur Année de publication : 2016 Article en page(s) : pp 193-209 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] carte géologique
[Termes IGN] grotte
[Termes IGN] impact sur l'environnement
[Termes IGN] inférence
[Termes IGN] Inférence floue
[Termes IGN] mine de charbon
[Termes IGN] outil d'aide à la décision
[Termes IGN] pollution atmosphérique
[Termes IGN] répartition géographiqueRésumé : (Auteur) Determination of spatial distribution of coal quality parameters can ease management of the operations in coal mines. In this study, in order to provide guidance for the excavations, Can coal mine production map showing regions having suitable coal parameters as feed coals for a power plant and also for public sale was prepared using adaptive neuro-fuzzy inference system tool. Statistical relationships among calorific value, ash content and sulphur content were evaluated using the data obtained from boreholes opened in the mine between 2006 and 2009. According to the obtained production map, coals of Can mine are not suitable for public sale because of their high sulphur content and hence they should be blended with low sulphur coals to meet the requirements, before sale. Numéro de notice : A2016-107 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2015.1041564 Date de publication en ligne : 20/05/2015 En ligne : http://www.tandfonline.com/doi/full/10.1080/10106049.2015.1041564 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80002
in Geocarto international > vol 31 n° 1 - 2 (January - February 2016) . - pp 193-209[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-2016011 RAB Revue Centre de documentation En réserve L003 Disponible Static GNSS precise point positioning using free online services for Africa / Anis Abdallah in Survey review, vol 48 n° 346 (January 2016)
[article]
Titre : Static GNSS precise point positioning using free online services for Africa Type de document : Article/Communication Auteurs : Anis Abdallah, Auteur ; B. V. Schwieger, Auteur Année de publication : 2016 Article en page(s) : pp. 61 - 77 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] Afrique (géographie politique)
[Termes IGN] positionnement par GNSS
[Termes IGN] positionnement ponctuel précis
[Termes IGN] positionnement statique
[Termes IGN] retard troposphérique zénithal
[Termes IGN] service fondé sur la position
[Termes IGN] station GNSSRésumé : (auteur) The GNSS precise point positioning (PPP) technique has been extensively covered in recent research. In this study, six International global navigation satellite system (GNSS) Service (IGS) stations defined by 4-digits code in Africa were selected to be processed. The stations cover different climates in Africa. HARB, SUTH and WIND stations cover the mid-latitude area and NKLG, NURK and MAL2 are located in the equatorial region. Two data sessions were selected in processing to cover the winter and summer seasons: the first session of 3 days [01–03 January 2013 (DOY: 001–003/2013)] and the second session of 3 days [01–03 July 2013 (DOY: 182–184/2013)]. This paper aims to evaluate the accuracy of static PPP coordinate solution in Africa for different convergence times using free online services: Canadian Spatial Reference System (CSRS)-PPP, Automatic Precise Point Service (APPS)-PPP and GPS Analysis and Positioning Software (GAPS)-PPP. The stations’ observation times were divided into different observation times (1, 2, 4, 8, 12, and 24 h).The PPP coordinate solution was compared to the reference solution of those stations. The investigation is continued by estimating the PPP total tropospheric zenith delay (TZD) parameters, which were obtained by the different online services. These parameters were compared to the published parameters from IGS. The comparison between the different online services shows that the CSRS-PPP provides the best solution after 4 and 8 h. The APPS-PPP and CSRS-PPP provides the same solution in millimeters level after 12 h. In the equatorial region, the PPP coordinate solution is significantly improved between 12 and 24 h. Moreover, GAPS-PPP is not recommended to be used in the equatorial stations, where it shows a high error compared to CSRS-PPP and APPS-PPP even after 24 h. The mid-latitude stations show a better PPP coordinate solution in the winter than in the summer, but the equatorial stations present a low accuracy for the two sessions. Regarding the PPP tropospheric delay estimation, an additional station (HNUS) is used in the mid-latitude area, which has a low ellipsoidal height. APPS-PPP shows the best solution in the TZD estimation. The GAPS-PPP online service shows a systemic error in estimation and a high RMS relative to the TZD values known from IGS. The ellipsoidal height for antenna indicates a negative correlation to the estimated tropospheric values, but there is no effect for the variation of the ellipsoidal height in the estimated RMS. The estimated tropospheric parameters are correlated with the PPP coordinate estimation, where the GAPS-PPP service provides the worst PPP coordinate solution and at the same time, it shows the worst accuracy for tropospheric parameters estimation. Moreover, the estimated tropospheric parameters for the mid-latitude stations in the summer season show a higher RMS than in the winter season, which matches the same sequence of the PPP coordinates. The NKLG and NURK stations present a low accuracy for the tropospheric estimation, which is matching to the low accuracy of the PPP coordinates obtained from the different online services. Numéro de notice : A2016-046 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/00396265.2015.1097595 En ligne : https://doi.org/10.1080/00396265.2015.1097595 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79639
in Survey review > vol 48 n° 346 (January 2016) . - pp. 61 - 77[article]
Titre : UAV based landscape evolution in dangerous mining environments Type de document : Mémoire Auteurs : Charlotte Wolff, Auteur Editeur : Champs-sur-Marne : Ecole nationale des sciences géographiques ENSG Année de publication : 2016 Importance : 59 p. Format : 21 x 30 cm Note générale : Bibliographie
Rapport de projet pluridisciplinaire, cycle Ingénieur 2e annéeLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] Agisoft Photoscan
[Termes IGN] analyse comparative
[Termes IGN] COSI-Corr
[Termes IGN] détection de changement
[Termes IGN] effondrement de terrain
[Termes IGN] ENVI
[Termes IGN] image hyperspectrale
[Termes IGN] mine
[Termes IGN] modèle 3D du site
[Termes IGN] modèle numérique de terrain
[Termes IGN] OpenCV
[Termes IGN] Saxe (Allemagne)
[Termes IGN] structure-from-motion
[Termes IGN] test de performanceIndex. décimale : PROJET Mémoires : Rapports de projet - stage des ingénieurs de 2e année Résumé : (Auteur) L’équipe « Exploration Technology » de l’Helmholtz Institut Freiberg est une équipe qui a été formée très récemment et qui a pour but de créer et tester des outils permettant l’analyse et la surveillance de terrains d’étude en utilisant la photogrammétrie et la télédétection. Ce rapport présente les différents logiciels et scripts testés pour construire des modèles 3D et des Modèles Numériques de Terrain (MNT) avec la méthode de Structure from Motion, regarder les changements au cours du temps et analyser un terrain d’étude. Les principaux logiciels testés sont SURE, Photoscan, OpenCV, Cosi-Corr et ENVI Ces outils ont été utilisés afin d’étudier les changements au niveau de l’ancienne mine de Halle, au Nord de Leipzig. En effet, cette ancienne mine de lignite et de potasse présente un dôme de résidus avec des risques de glissement de terrain et un bassin drainant changeant très rapidement par cristallisation et dissolution de sels. Il s’agit donc d’un terrain idéal pour étudier les changements pouvant survenir au cours du temps. Note de contenu : 1. INTRODUCTION
2. AREA PRESENTATION
2.1. Presentation of the institute of Freiberg
2.2. The history of the open-mine of Halle
2.3. The geological interest of the area
3. PHOTOGRAMMETRIC DATA
3.1. Field acquisition
3.2. 3D-modelling and DEMs
3.3. Orthoimages comparison
4. HYPERSPECTRAL DATA
4.1. Field acquisition
4.2. Hyperspectral images treatment
4.3. Analysis of the images
5. CONCLUSIONNuméro de notice : 22620 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Mémoire de projet pluridisciplinaire Organisme de stage : Helmholtz-Institut Freiberg für Ressourcentechnologie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83372 Documents numériques
peut être téléchargé
22620_UAV based landscape evolution in dangerous mining environments.pdfAdobe Acrobat PDF vol 62 n° 2 - December 2015 - Special issue on nex-generation network (Bulletin de Journal of NICT [National Institute of Information and Communications Technology]) / Makoto ImaseContientRéservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 220-2015021 RAB Revue Centre de documentation En réserve L003 Disponible Ubiquitous user localization in LBS : The need for implementing ethical thinking in our research field / Guenther Retscher in Journal of applied geodesy, vol 9 n° 4 (December 2015)
[article]
Titre : Ubiquitous user localization in LBS : The need for implementing ethical thinking in our research field Type de document : Article/Communication Auteurs : Guenther Retscher, Auteur ; Franz Obex, Auteur Année de publication : 2015 Article en page(s) : pp 264 - 278 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] application informatique
[Termes IGN] éthique
[Termes IGN] géopositionnement
[Termes IGN] informatique ubiquitaire
[Termes IGN] protection de la vie privée
[Termes IGN] service fondé sur la positionRésumé : (auteur) Location-based Services (LBS) influence nowadays every individual’s life due to the emerging market penetration of smartphones and other mobile devices. For smartphone Apps localization technologies are developed ranging from GNSS beyond to other alternative ubiquitous positioning methods as well as the use of the in-built inertial sensors, such as accelerometers, gyroscopes, magnetometer, barometer, etc. Moreover, signals-of-opportunity which are not intended for positioning at the first sight but are receivable in many environments such as in buildings and public spaces are more and more utilized for positioning and navigation. The use of Wi-Fi (Wireless Fidelity) is a typical example. These technologies, however, have become very powerful tools as the enable to track an individual or even a group of users. Most technical researchers imply that it is mainly about further enhancing technologies and algorithms including the development of new advanced Apps to improve personal navigation and to deliver location oriented information just in time to a single LBS user or group of users. The authors claim that there is a need that ethical and political issues have to be addressed within our research community from the very beginning. Although there is a lot of research going on in developing algorithms to keep ones data and LBS search request in private, researchers can no longer keep their credibility without cooperating with ethical experts or an ethical committee. In a study called InKoPoMoVer (Cooperative Positioning for Real-time User Assistance and Guidance at Multi-modal Public Transit Junctions) a cooperation with social scientists was initiated for the first time at the Vienna University of Technology, Austria, in this context. The major aims of this study in relation to ethical questions are addressed in this paper. Numéro de notice : A2015--012 Affiliation des auteurs : non IGN Thématique : INFORMATIQUE/POSITIONNEMENT Nature : Article DOI : 10.1515/jag-2015-0015 En ligne : http://dx.doi.org/10.1515/jag-2015-0015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80764
in Journal of applied geodesy > vol 9 n° 4 (December 2015) . - pp 264 - 278[article]Car navigation – computing routes that avoid complicated crossings / Jukka Mathias Krisp in International journal of geographical information science IJGIS, vol 29 n° 11 (November 2015)PermalinkIntergeo 2015 review / Anonyme in GEO: Geoconnexion international, vol 14 n° 10 (November 2015)PermalinkSéries cartographiques et géoréférencement, nouveau contexte, nouveaux enjeux / Jean-Luc Arnaud in e-Perimetron, vol 10 n° 4 ([01/11/2015])PermalinkTransformer les collections en information grâce aux technologies du web sémantique / Etienne Cavalié in Arabesques, n° 80 (octobre - décembre 2015)PermalinkOpenEventMap: A volunteered location-based service / Katereh Polous in Cartographica, vol 50 n° 4 (Winter 2015)PermalinkWebGL based visualisation and analysis of stratigraphic data for the purposes of the mining industry / Adrian Kopec in Procedia Computer Science, vol 51 (2015)PermalinkSocial media-related geographic information in the context of strategic environmental assessment of municipal masterplans: A case study concerning Sardinia (Italy) / Roberta Floris in Future internet, vol 7 n° 3 (September 2015)PermalinkTélédétection pour l'agriculture de précision par caméra hyperspectrale miniature / D. Constantin in Géomatique suisse, vol 113 n° 9 (septembre 2015)PermalinkPermalinkBeyond the basemap / Matt Toon in GEO: Geoconnexion international, vol 14 n° 7 (July 2015)Permalink