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Auteur X. Li |
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Retrieving soil temperature profile by assimilating MODIS LST products with ensemble Kalman filter / C. Huang in Remote sensing of environment, vol 112 n° 4 (15/04/2008)
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Titre : Retrieving soil temperature profile by assimilating MODIS LST products with ensemble Kalman filter Type de document : Article/Communication Auteurs : C. Huang, Auteur ; X. Li, Auteur ; L. Lu, Auteur Année de publication : 2008 Article en page(s) : pp 1320 - 1336 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] chaleur terrestre
[Termes IGN] filtre de Kalman
[Termes IGN] image Aqua-MODIS
[Termes IGN] mise à jour automatique
[Termes IGN] Mongolie
[Termes IGN] prédiction
[Termes IGN] température au solRésumé : (Auteur) Proper estimation of initial state variables and model parameters are vital importance for determining the accuracy of numerical model prediction. In this work, we develop a one-dimensional land data assimilation scheme based on ensemble Kalman filter and Common Land Model version 3.0 (CoLM). This scheme is used to improve the estimation of soil temperature profile. The leaf area index (LAI) is also updated dynamically by MODIS LAI production and the MODIS land surface temperature (LST) products are assimilated into CoLM. The scheme was tested and validated by observations from four automatic weather stations (BTS, DRS, MGS, and DGS) in Mongolian Reference Site of CEOP during the period of October 1, 2002 to September 30, 2003. Results indicate that data assimilation improves the estimation of soil temperature profile about 1 K. In comparison with simulation, the assimilation results of soil heat fluxes also have much improvement about 13 W m- 2 at BTS and DGS and 2 W m- 2 at DRS and MGS, respectively. In addition, assimilation of MODIS land products into land surface model is a practical and effective way to improve the estimation of land surface variables and fluxes. Copyright Elsevier Numéro de notice : A2008-091 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2007.03.028 En ligne : https://doi.org/10.1016/j.rse.2007.03.028 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29086
in Remote sensing of environment > vol 112 n° 4 (15/04/2008) . - pp 1320 - 1336[article]Embedding sustainable development strategies in agent-based models for use as a planning tool / X. Li in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)
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Titre : Embedding sustainable development strategies in agent-based models for use as a planning tool Type de document : Article/Communication Auteurs : X. Li, Auteur ; X. Liu, Auteur Année de publication : 2008 Article en page(s) : pp 21 - 45 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] automate cellulaire
[Termes IGN] Chine
[Termes IGN] croissance urbaine
[Termes IGN] développement durable
[Termes IGN] exploration de données géographiques
[Termes IGN] interaction homme-milieu
[Termes IGN] planification urbaine
[Termes IGN] système multi-agents
[Termes IGN] utilisation du solRésumé : (Auteur) Rapid land development in rapidly growing countries has created a series of land-use problems. The implementation of sustainable land use can alleviate some of these problems. It needs a set of tools for the exploration, design, modification, illustration, and evaluation of alternative planning scenarios. This paper demonstrates that the integration of cellular automata and agent-based modelling can provide a spatial exploratory tool for generating alternative development patterns. Sustainable development strategies are embedded in the modelling to regulate agents' behaviours. The use of agents can help to represent human-environment interactions in solving complex land-use problems. It is able to examine the effects of different stakeholders in influencing the process of land development. The proposed model has been applied to the simulation of planning scenarios for residential development in a rapidly expanding city in the Pearl River Delta. Copyright Taylor & Francis Numéro de notice : A2008-103 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701228686 En ligne : https://doi.org/10.1080/13658810701228686 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29098
in International journal of geographical information science IJGIS > vol 22 n° 1-2 (february 2008) . - pp 21 - 45[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08011 RAB Revue Centre de documentation En réserve L003 Disponible 079-08012 RAB Revue Centre de documentation En réserve L003 Disponible An extended cellular automaton using case-based reasoning for simulating urban development in a large complex region / X. Li in International journal of geographical information science IJGIS, vol 20 n° 10 (november 2006)
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Titre : An extended cellular automaton using case-based reasoning for simulating urban development in a large complex region Type de document : Article/Communication Auteurs : X. Li, Auteur ; X. Liu, Auteur Année de publication : 2006 Article en page(s) : pp 1109 - 1136 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] automate cellulaire
[Termes IGN] Chine
[Termes IGN] classification barycentrique
[Termes IGN] complexité
[Termes IGN] croissance urbaine
[Termes IGN] delta
[Termes IGN] delta de la rivière des perles
[Termes IGN] image multitemporelle
[Termes IGN] raisonnement
[Termes IGN] simulation dynamique
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Rule-based cellular automata (CA) have been increasingly applied to the simulation of geographical phenomena, such as urban evolution and land-use changes. However, these models have difficulties and uncertainties in soliciting transition rules for a large complex region. This paper presents an extended cellular automaton in which transition rules are represented by using case-based reasoning (CBR) techniques. The common k-NN algorithm of CBR has been modified to incorporate the location factor to reflect the spatial variation of transition rules. Multi-temporal remote-sensing images are used to obtain the adaptation knowledge in the temporal dimension. This model has been applied to the simulation of urban development in the Pearl River Delta which has a hierarchy of cities. Comparison indicates that this model can produce more plausible results than rule-based CA in simulating this large complex region in 1988-2002. Copyright Taylor & Francis Numéro de notice : A2006-452 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810600816870 En ligne : https://doi.org/10.1080/13658810600816870 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28176
in International journal of geographical information science IJGIS > vol 20 n° 10 (november 2006) . - pp 1109 - 1136[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-06101 RAB Revue Centre de documentation En réserve L003 Disponible 079-06102 RAB Revue Centre de documentation En réserve L003 Disponible Indexing network-constrained trajectories for connectivity-based queries / X. Li in International journal of geographical information science IJGIS, vol 20 n° 3 (march 2006)
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Titre : Indexing network-constrained trajectories for connectivity-based queries Type de document : Article/Communication Auteurs : X. Li, Auteur ; H. Lin, Auteur Année de publication : 2006 Article en page(s) : pp 303 - 328 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] accès aux données localisées
[Termes IGN] connexité (topologie)
[Termes IGN] indexation spatiale
[Termes IGN] objet mobile
[Termes IGN] positionnement cinématique
[Termes IGN] requête spatiotemporelle
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Recent advances in positioning and communication technologies have made it possible to collect trajectories of moving objects, and thus, corresponding applications that handle trajectories come into sight, e.g. applying vehicle trajectories to traffic studies, where various queries about trajectories are necessary. However, due to their special spatio-temporal query conditions, trajectory queries are different from existing GIS queries, and there is still a lack of efficient data-access methods to support queries about trajectories. In view of this, we develop a data-access method, named a Topology-based Mixed Index Structure (TMIS), to index network-constrained trajectories for connectivity-based queries. The TMIS indeed is not a novel index structure but a novel combination of simple and classical index structures linked by the topology of a network. The TMIS can support more query types through different combinations of simple and classical index structures and can be applied to a large network. Existing database management systems can be employed to implement the TMIS. In this paper, we first define network-constrained trajectories and connectivity-based queries, and then introduce the principles, architecture, algorithms, and query processing of the TMIS. Finally, we implement the TMIS and validate it through a series of analyses and experiments. Numéro de notice : A2006-094 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810500432570 En ligne : https://doi.org/10.1080/13658810500432570 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27821
in International journal of geographical information science IJGIS > vol 20 n° 3 (march 2006) . - pp 303 - 328[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-06031 RAB Revue Centre de documentation En réserve L003 Disponible 079-06032 RAB Revue Centre de documentation En réserve L003 Disponible Creating buffers on surfaces / X. Li in Cartography and Geographic Information Science, vol 32 n° 3 (July 2005)
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Titre : Creating buffers on surfaces Type de document : Article/Communication Auteurs : X. Li, Auteur ; C.L. Larson, Auteur ; A.B. Rex, Auteur Année de publication : 2005 Article en page(s) : pp 195 - 210 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse spatiale
[Termes IGN] distance euclidienne
[Termes IGN] données maillées
[Termes IGN] données vectorielles
[Termes IGN] montagne
[Termes IGN] système d'information géographique
[Termes IGN] zone tamponRésumé : (Auteur) Creating buffers is an important function used in geographic information systems (GIS) to perform spatial analysis. However, delineating buffers for setbacks in conservation and planning applications is problematical in mountainous areas. A typical vector buffer function in GIS calculates two-dimensional (2D) Euclidean distance (i.e., planimetric distance) instead of surface (or slope) distance and results in an inaccurate representation of buffers when they are verified in the field. A method of delineating buffers on surfaces in the raster data model is presented in this paper. Ali efficient implementation of the method is achieved through the use of a min-heap and a hash-table based location index. The method is tested and analysed on both hypothetical and real surface datasets. Numéro de notice : A2005-419 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040054738945 En ligne : https://doi.org/10.1559/1523040054738945 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27555
in Cartography and Geographic Information Science > vol 32 n° 3 (July 2005) . - pp 195 - 210[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-05031 RAB Revue Centre de documentation En réserve L003 Disponible Integration of genetic algorithms and GIS for optimal location search / X. Li in International journal of geographical information science IJGIS, vol 19 n° 5 (may 2005)PermalinkAn IFSAR quality management system: meeting DEM and ortho-imagery specifications / X. Li in GIM international, vol 19 n° 1 (January 2005)PermalinkA four-component efficiency index for assessing land development using remote sensing and GIS / X. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 1 (January 2005)PermalinkData mining of cellular automata's transition rules / X. Li in International journal of geographical information science IJGIS, vol 18 n° 8 (december 2004)PermalinkGPS and GIS assisted radar interferometry / Linlin Ge in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 10 (October 2004)PermalinkTowards an operational system for regional-scale rice yield estimation using a time-series of Radarsat ScanSAR images / Y. Li in International Journal of Remote Sensing IJRS, vol 24 n° 21 (November 2003)PermalinkSimulation of development alternatives using neural networks, cellular automata, and GIS for urban planning / A.G. Yeh in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 9 (September 2003)PermalinkNeural-network-based cellular automata for simulating multiple land use changes using GIS / X. Li in International journal of geographical information science IJGIS, vol 16 n° 4 (june 2002)PermalinkUrban simulation using principal components analysis and cellular automata for land-use planning / X. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 4 (April 2002)PermalinkModelling sustainable urban development by the integration of constrained cellular automata and GIS / X. Li in International journal of geographical information science IJGIS, vol 14 n° 2 (march 2000)Permalink