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Exploring potential human activities in physical and virtual spaces: a spatio-temporal GIS approach / H. Yu in International journal of geographical information science IJGIS, vol 22 n° 4-5 (april 2008)
[article]
Titre : Exploring potential human activities in physical and virtual spaces: a spatio-temporal GIS approach Type de document : Article/Communication Auteurs : H. Yu, Auteur ; Shih-Lung Shaw, Auteur Année de publication : 2008 Article en page(s) : pp 409 - 430 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] données spatiotemporelles
[Termes IGN] espace-temps
[Termes IGN] monde virtuel
[Termes IGN] SIG 3D
[Termes IGN] Time-geographyRésumé : (Auteur) Today, the opportunity for potential human activity has gone beyond physical space to virtual space. Based on a proposed conceptual framework that models the relationships between physical and virtual spaces, this paper presents an attempt to adjust the space-time prism concept of Haumlgerstrand's time geography to identify potential activity opportunities in virtual space, focusing on the virtual space access channels available in physical space. A three-dimensional (3D) spatio-temporal Geographic Information System (GIS) design has been developed in this research to accommodate the adjusted space-time prism concept to support the representation, visualization, and analysis of potential human activities and interactions in physical and virtual spaces using the prism representation. Following the design, a prototype system has been successfully implemented in a 3D GIS environment. Such a system can provide powerful analytical tools for studies related to potential human activities and applications such as location-based services (LBS) and accessibility analysis in the information age. Copyright Taylor & Francis Numéro de notice : A2008-147 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810701427569 En ligne : https://doi.org/10.1080/13658810701427569 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29142
in International journal of geographical information science IJGIS > vol 22 n° 4-5 (april 2008) . - pp 409 - 430[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08031 RAB Revue Centre de documentation En réserve L003 Disponible 079-08032 RAB Revue Centre de documentation En réserve L003 Disponible Space-time opportunities for multiple agents: a constraint-based approach / T. Neutens in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)
[article]
Titre : Space-time opportunities for multiple agents: a constraint-based approach Type de document : Article/Communication Auteurs : T. Neutens, Auteur ; F. Witlox, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 1061 - 1076 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Autocad Map
[Termes IGN] migration pendulaire
[Termes IGN] programmation par contraintes
[Termes IGN] raisonnement spatiotemporel
[Termes IGN] système d'information géographique
[Termes IGN] système multi-agents
[Termes IGN] Time-geographyRésumé : (Auteur) Constraint-based models and models constructing accessibility measures mainly focus on single agents having only one available transport mode. However, numerous cases exist where multiple agents or groups of individuals with different available transport modes want to participate in a joint activity at a certain location. The aim of this paper is to provide new insights into representing and reasoning about feasible space-time opportunities for multiple agents. Relying on concepts of time geography, we propose a conceptual framework in order to determine interaction spaces for groups of individuals. Besides availability of means of transport and the locations of each individual, minimum activity duration and opening hours of opportunities are taken into account. The reasoning about space and time is visualized in three dimensions using a hybrid (CAD/GIS) system. Copyright Taylor & Francis Numéro de notice : A2007-556 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810601169873 En ligne : https://doi.org/10.1080/13658810601169873 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28919
in International journal of geographical information science IJGIS > vol 21 n° 9-10 (october 2007) . - pp 1061 - 1076[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-07061 RAB Revue Centre de documentation En réserve L003 Disponible 079-07062 RAB Revue Centre de documentation En réserve L003 Disponible Time geography for ad-hoc shared-ride trip planning in mobile geosensor networks / Martin Raubal in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 5 (October 2007)
[article]
Titre : Time geography for ad-hoc shared-ride trip planning in mobile geosensor networks Type de document : Article/Communication Auteurs : Martin Raubal, Auteur ; Stephan Winter, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 366 - 381 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] coût
[Termes IGN] itinéraire
[Termes IGN] partage de données localisées
[Termes IGN] planification
[Termes IGN] réseau routier
[Termes IGN] système multi-agents
[Termes IGN] télécommunication
[Termes IGN] Time-geography
[Termes IGN] utilisateur nomadeRésumé : (Auteur) Ad-hoc shared-ride trip planning in an urban environment is a complex task within a non-deterministic transportation network. Mobile geosensor networks provide the technical environment for realizing ad-hoc shared-ride trip planning: Network nodes are autonomous agents that interact locally by ad-hoc short-range communication and arrange for shared rides. In a mobile geosensor network, communication costs are critical because of constraints regarding bandwidth, available energy, and memory. This paper introduces spatio-temporal concepts from time geography, which can be employed during the planning process to significantly reduce communication costs. We will integrate network-based algorithms and different wayfinding strategies to assist both shared-ride clients and hosts in finding optimal travel assignments. Multi-agent geosimulation in a real street network is used to demonstrate the applicability of the approach and quantitatively confirm the theoretically foreseen reduction in communication costs. Copyright ISPRS Numéro de notice : A2007-485 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2007.03.005 En ligne : https://doi.org/10.1016/j.isprsjprs.2007.03.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28848
in ISPRS Journal of photogrammetry and remote sensing > vol 62 n° 5 (October 2007) . - pp 366 - 381[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-07071 SL Revue Centre de documentation Revues en salle Disponible Spatio-temporal GIS design for exploring interactions of human activities / H. Yu in Cartography and Geographic Information Science, vol 33 n° 1 (January 2006)
[article]
Titre : Spatio-temporal GIS design for exploring interactions of human activities Type de document : Article/Communication Auteurs : H. Yu, Auteur Année de publication : 2006 Article en page(s) : pp 3 - 19 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] analyse spatio-temporelle
[Termes IGN] ArcGIS
[Termes IGN] co-positionnement
[Termes IGN] données spatiotemporelles
[Termes IGN] géographie humaine
[Termes IGN] interaction spatiale
[Termes IGN] maladie infectieuse
[Termes IGN] programmation informatique
[Termes IGN] prototype
[Termes IGN] réalité virtuelle
[Termes IGN] sécurité
[Termes IGN] segmentation dynamique
[Termes IGN] système d'information géographique
[Termes IGN] Time-geographyRésumé : (Auteur) An effective representation of human activities in geographic information systems (GIS) presents a challenging research topic. Recent developments of information and communication technologies (ICT), which enable a virtual space and allow people to interact with others remotely, make such efforts even more difficult. This paper first extends the space-time path concept of Hägerstrand's time geography to represent both physical and virtual activities in a space-time context. A spatio-temporal GIS design which can accommodate the extended space-time path concept is proposed to support the exploration of spatio-temporal patterns of human interactions in physical and virtual spaces. Using time as a linear referencing system, a temporal dynamic segmentation method was developed to dynamically locate physical and virtual activities on space-time paths. The GIS design supports the identification of four different spatio-temporal patterns (i.e., co-existence, co-location in space, co-location in time, and no co-location in either space or time) of human interactions through their space-time paths. Using a hypothetical activity dataset, a prototype system is implemented as a three-dimensional GIS (i.e., two-dimensional space + one-dimensional time) in ArcGIS. The prototype system demonstrates the feasibility and potential of applying spatio-temporal GIS concepts to extend Hägerstrand's time-geographic framework for the representation and analysis of human interactions in both physical and virtual spaces. The proposed GIS design can be useful in such applications as understanding traffic congestion, tracking terrorist activities, and modeling the spread of infections diseases. Copyright CAGIS Numéro de notice : A2006-202 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/152304006777323136 En ligne : https://doi.org/10.1559/152304006777323136 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27929
in Cartography and Geographic Information Science > vol 33 n° 1 (January 2006) . - pp 3 - 19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-06011 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : The space-time cube revisited from a geovisualization perspective Type de document : Article/Communication Auteurs : Menno-Jan Kraak, Auteur Editeur : Enschede [Pays-Bas] : International Institute for Geo-Information Science and Earth Observation ITC Année de publication : 2003 Conférence : ICC 2003, 21st International Cartographic Conference of ICA 10/08/2003 16/08/2003 Durban Afrique du sud Importance : 9 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données spatiotemporelles
[Termes IGN] cube espace-temps
[Termes IGN] Time-geography
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) At the end of the sixties Hägerstrand introduced a space-time model which included features such as a Space-Time- Path, and a Space-Time-Prism. His model is often seen as the start of the time-geography studies. Throughout the years his model has been applied and improved to understand our movements through space. Problems studied can be found in different fields of geography, and range from those on an individual movement to whole theories to optimize transportation. From a visualization perspective the Space-Time-Cube was the most prominent element in Hagerstrand.s approach. In its basic appearance these images consist of a cube with on its base a representation of geography (along the x- and y-axis), while the cube.s height represents time (z-axis). A typical Space-Time-Cube could contain the space time-paths of for instance individuals or bus routes. However, when the concept was introduced the options to create the graphics were limited to manual methods and the user could only experience the single view created by the draftsperson. An alternative view on the cube would mean to go through a laborious drawing exercise. Today.s software has options to automatically create the cube and its contents from a database. Data acquisition of space-time paths for both individuals and groups is also made easier using GPS. Today, the user.s viewing environment is, by default, interactive and allows one to view the cube from any direction. In this paper an extended interactive and dynamic visualization environment is proposed, and demonstrated, in which the user has full flexibility to view, manipulate and query the data in a Space-Time-Cube. Included are options to move slider planes along each of the axes to for instance select, or highlight a period in time or location in space. Examples will be discussed in which the time axis is manipulated by for instance changing world time for event time (time cartograms). Creativity should not stop here since it has been shown that especially an alternative perspective on the data will sparkle the mind with new ideas. The user should be allowed to for instance let the x- and/or y-axis be represented by other variables of the theme studied. Since the cube is seen as an integral part of a geovisualization environment the option to link other views with other graphic representation does exist. Numéro de notice : C2003-037 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85102 Documents numériques
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