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Integrating sketch maps with GIS to explore fear of crime in the urban environment: A review of the past and prospects for the future / J. Curtis in Cartography and Geographic Information Science, vol 39 n° 4 (October 2012)  

Public [article]  inCartography and Geographic Information Science > vol 39 n° 4 (October 2012) . - pp 175 - 186 Titre : Integrating sketch maps with GIS to explore fear of crime in the urban environment: A review of the past and prospects for the future Type de document : Article/Communication Auteurs : J. Curtis, Auteur Année de publication : 2012 Article en page(s) : pp 175 - 186 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] analyse spatiale [Termes IGN] croquis topographique [Termes IGN] enquête [Termes IGN] infraction [Termes IGN] milieu urbain [Termes IGN] perception [Termes IGN] système d'information géographique Résumé : (Auteur) Understanding the spatial dimension of fear of crime in the urban environment is important to understanding behaviors in response to this concern. Making this connection between perception and action has long been a goal of scholars in the social and health sciences, though this complex relationship has yet to be fully elucidated. Specifically, in studies on fear of crime and its influence on behavior, a variety of definitions and methods have been employed. This situation has yielded insights, as well as inconsistencies. In the past decade, Geographic Information Systems (GIS) has been added to this methodological mix, though it too has contributed limited understanding of the environmental perception-behavior nexus. During this time, some scholars have integrated a traditional technique for accessing environmental perception, the sketch map, with this newer technology. This article provides a review and critical assessment of the way GIS has been used to understand fear of crime, specifically through the integration of sketch maps. This focus is framed by an overview of substantive and methodological concerns and concludes with a discussion of continued research needs. As behavioral responses to fear of crime are acknowledged to impact physical and mental health and overall well-being, in addition to the viability of neighborhoods, research in this area will continue apace. However, for integration of sketch maps in GIS to be a valuable methodological contributor to this line of inquiry, users of the approach must understand its complexities. This article outlines these issues so that they may be considered in future research and may improve the ability for this approach to yield new understanding of fear of crime. Numéro de notice : A2012-573 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/15230406394175 En ligne : https://doi.org/10.1559/15230406394175 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32019 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Landscape controls over major nutrients and primary productivity of Arctic lakes / P. Pathak in Cartography and Geographic Information Science, vol 39 n° 4 (October 2012)  

Public [article]  inCartography and Geographic Information Science > vol 39 n° 4 (October 2012) . - pp 187 - 198 Titre : Landscape controls over major nutrients and primary productivity of Arctic lakes Type de document : Article/Communication Auteurs : P. Pathak, Auteur ; R. Stine, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 187 - 198 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Alaska (Etats-Unis) [Termes IGN] Arctique [Termes IGN] azote [Termes IGN] bassin hydrographique [Termes IGN] chlorophylle [Termes IGN] image radar [Termes IGN] image SPOT [Termes IGN] interaction spatiale [Termes IGN] lac [Termes IGN] macrophyte [Termes IGN] marais [Termes IGN] occupation du sol [Termes IGN] phosphore [Termes IGN] plante ripicole [Termes IGN] production primaire brute [Termes IGN] surveillance [Termes IGN] zone tampon Résumé : (Auteur) Increasing surface temperatures in the Arctic are affecting the dynamics between lakes and their landscapes. In this paper, we use landscape metrics for land cover and statistical analysis to explore the interactions between such measures as shape and patch density indices for land cover and lake primary productivity. The objective was to identify metrics that could be used to predict lake primary productivity, as measured by chlorophyll a, total nitrogen and total phosphorus estimates. Land cover and landscape metrics for the Toolik region of Alaska were derived using satellite imagery and Fragstats software. The metrics, treated as independent variables in a stepwise regression, were derived for two levels of land cover. The first comprised the entire watershed studied; the second was derived using buffers created around water channels within each watershed. A statistically significant model for each dependent variable was obtained. Results suggest that, of the metrics tested; those related to broad leaf vegetation complexes were most useful in predicting lake primary productivity. The Landscape Shape Index for riparian patches and the Patch Density for heath complex were the two most important metrics for predicting variation in chlorophyll a (p Numéro de notice : A2012-574 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1559/15230406394187 En ligne : https://doi.org/10.1559/15230406394187 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32020 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

An automated system for image-to-vector georeferencing / Y. Li in Cartography and Geographic Information Science, vol 39 n° 4 (October 2012)  

Public [article]  inCartography and Geographic Information Science > vol 39 n° 4 (October 2012) . - pp 199 - 217 Titre : An automated system for image-to-vector georeferencing Type de document : Article/Communication Auteurs : Y. Li, Auteur ; R. Briggs, Auteur Année de publication : 2012 Article en page(s) : pp 199 - 217 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] algorithme ICP [Termes IGN] appariement d'images [Termes IGN] carrefour [Termes IGN] Dallas (Texas) [Termes IGN] données vectorielles [Termes IGN] extraction automatique [Termes IGN] extraction de traits caractéristiques [Termes IGN] géoréférencement indirect [Termes IGN] image aérienne [Termes IGN] image satellite [Termes IGN] intersection spatiale Résumé : (Auteur) Although modern imagery usually has latitude and longitude or similar coordinates to provide true world location, much potentially useful imagery lacks this information. This includes historical imagery, as well as modern imagery that may have lost its locational information through inappropriate processing. Its provision through the process of georeferencing is still primarily a manual procedure. This paper proposes an efficient, fully- automated solution for massively asymmetric image-to-vector georeferencing whereby an image of a relatively small geographic area is automatically located relative to a substantially larger vector map base. For control points, road intersections are automatically extracted from high resolution aerial or satellite imagery using the new concepts of reference circles and central pixels. For automated control point pair identification between image and vector map, an invariant point pattern matching approach is proposed based on shape invariance for similarity transforms and invariant area ratios for affine transforms. The matching algorithm necessitates only a small subset of image points and requires no additional information beyond pixel and map coordinates. Further, it tolerates inaccurate, missing and spurious points, and provides high performance with linear scalability. A final step performs transformation verification, globalization and optimization based upon an Iterative Closest Point Greedy algorithm. Experimentation shows that images covering a few city blocks with as few as 6 to 17 extracted road intersection points can be efficiently and correctly located using the road network of Dallas County, Texas, with over 80,000 intersections. Numéro de notice : A2012-575 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1559/152304063941199 En ligne : https://doi.org/10.1559/152304063941199 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32021 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible