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  • 1.
    Bendt, Pim
    et al.
    Beijer Institute of Ecological Economics, Royal Swedish Academy of Sciences, Stockholm, Sweden; .
    Barthel, Stephan
    Stockholm Resilience Center, Stockholm University, Stockholm, Sweden; Department of History, Stockholm University, Stockholm, Sweden.
    Colding, Johan
    Beijer Institute of Ecological Economics, Royal Swedish Academy of Sciences, Stockholm, Sweden; Stockholm Resilience Center, Stockholm University, Stockholm, Sweden .
    Civic greening and environmental learning in public-access community gardens in Berlin2013Ingår i: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 109, nr 1, s. 18-30Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We analyse environmental learning in public-access community gardens (‘PAC-gardens’) in Berlin, representing public green spaces that are collectively managed by civil society groups. Through extensive fieldwork, and drawing upon social theories of learning, we describe learning communities in four PAC-gardens and analyse factors that influence participation and boundary interaction, that is when experiences brought in from the outside encounter socially defined competences. Results show that these PAC-gardens have self-generated social and physical structures, which to different degrees inhibit or facilitate boundary interactions, whereas skills of individuals to put those to work, in combination with the quality of the surrounding neighbourhoods, can be ascribed for creating broader participation and greater diversity in the content of learning about local sustainability. Identified learning streams included learning about gardening and local ecological conditions; about urban politics, and about social entrepreneurship. We discuss results in relation to environmental learning that combats the generational amnesia in cities about our dependence on nature, where PAC-gardens clearly distinguish themselves from more closed forms of urban gardening such as allotment gardens and gated community gardens. We conclude that PAC-gardens that intertwine gardening with social, political and economic practices can create broader and more heterogeneous learning about social–ecological conditions, and help develop sense-of-place in degraded neighbourhoods.

  • 2.
    Bergquist, Arne
    et al.
    Lantmäteriet.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Klang, Dan
    Vad är optimal kvalitet på geografisk information som underlag för detaljerad översvämningskartering?2008Ingår i: Kart & Bildteknik (Mapping and Image Science), ISSN 1651-792X, nr 4, s. 18-20Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 3.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Betydelse av höjdmodellers kvalitet vid översvämningsmodellering2009Ingår i: ULI aktuellt, ISSN 1654-6016, nr 1, s. 8-9Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 4.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Conceptualization of hydraulic and sedimentary processes in downstream reaches during flushing of reservoirs2005Ingår i: Proceedings of the XXXI IAHR Congress [Elektronisk resurs]: Water engineering for the future : choices and challenges : COEX Seoul September 11-16, 2005, Seoul: Korea Water Resources Association , 2005, s. 2577-2588Konferensbidrag (Refereegranskat)
    Abstract [en]

    The main focus of this paper is to describe the active hydraulic and sedimentary processes in downstream river reaches during flushing of sediments from reservoirs. During flushing extreme amounts of sediment may be released. Therefore, these processes are different than those downstream from dams and reservoirs not subjected to flushing. Hence, also the effects differ, which knowledge of may be of value for biologists, etc. During flushing of a reservoir a wave will be released to the downstream reaches. This wave can be divided into one water part and one sediment part. Initially they are in phase with each other, but with increased distance downstream from the dam, the transported sediment lags behind the water due to different traveling velocities. The paper treats when and where sedimentation occurs, and how this is related to the different traveling velocities of water and sediment. Also included are discussions on how the downstream effects during flushing differ from non-flushing effects, how visualization of effects can enhance both the analysis and communication with planners, politicians, etc., as well as discussions on how the studies of these effects can benefit from improved field-work methods.

  • 5.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Föreläsningar - övningar - eller?: en jämförande studie av undervisningsmetoder inom gevärsskytte och geografiska informationssystem2004Ingår i: Kunskap och lärande i den högre utbildningen: lärarreflektioner från praktiken / [ed] Sara Dahlström och Göran Fransson, Gävle: Pedagogiska rådet, Högskolan i Gävle , 2004, s. 19-38Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 6.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Rapport från Utbildningssektionens årliga utbildningskonferens2009Ingår i: Kart- & bildteknik, ISSN 1651-792X, Vol. 2009, nr 3, s. 18-19Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Kartografiska sällskapets utbildningssektion genomför varje år de så kallade lärardagarna, en utbildningskonferens som kretsar kring geografisk information. Tilltänkta deltagare är alla, både utbildare och avnämare, som har intresse av utbildningsfrågor från skol- till universitetsnivå. Den 17 till 18 augusti detta år stod KTH som värd, med Hans Hauska hållande taktpinnen, och med 19 deltagare från ett tiotal olika arbetsgivare.

  • 7.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Resolution issues of elevation data during inundation modeling of river floods2005Ingår i: Proceedings of the XXXI IAHR Congress [Elektronisk resurs]: Water engineering for the future: choices and challenges. COEX Seoul September 11-16, 2005, Seoul: Korea Water Resources Association , 2005, s. 3573-3581Konferensbidrag (Refereegranskat)
    Abstract [en]

    A case study of the Eskilstuna River in Sweden is presented. This study is carried out within the project KRIS-GIS®, a Swedish initiative of handling crisis situations, including flooding. The purpose is to show how different resolutions in input elevation data affect the resulting inundation maps. Terrain elevation points at the sides of the river were gathered from an airborne laser altimetry survey, and river bed elevations were gathered from an echosounding survey. The terrain model was constructed in ArcView GIS as a triangulated irregular network (TIN), which served as the base for all later modeling. The hydraulic modeling was done as one-dimensional steady flow in HEC-RAS flow routing software. High-resolution elevation data resulted in better inundation delineation than did lowresolution elevation data. If the mean water discharge was used in the modeling and if the river is narrow, a low resolution could even lead to that the river itself would not be marked as inundated. At high water discharges, the river was usually inundated, but there was great uncertainty if the riparian areas really would be flooded or not. With steep side slopes, the delineation of inundation becomes more certain, while at gentler side slopes, the flow is distributed on a larger surface with a risk that the raster cells will be incorrectly marked regarding inundation. Finally, the use of high-resolution elevation data compared with lowresolution data, makes estimates of friction factor, Manning’s n, relatively more important for correct results in inundation studies.

  • 8.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Svensk kartografiutbildning i ett historiskt perspektiv2008Ingår i: Kartan i våra hjärtan: Kartografiska Sällskapet 100 år 2008, Stockholm: Kartografiska Sällskapet , 2008, s. 305-318Kapitel i bok, del av antologi (Övrig (populärvetenskap, debatt, mm))
  • 9.
    Brandt, S. Anders
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Översvämningsmodellering i GIS: betydelse av höjdmodellers upplösning applicerat på Eskilstunaån - ett delprojekt i KRIS-GIS®2005Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Under senare tid har översvämningar alltmer uppmärksammats av allmänhet, politiker, myndigheter och organisationer. Samtidigt har allt fler insett att det inte är en fråga om en översvämning kommer att ske utan när och hur stor den blir. Detta innebär att översvämningsrisker ständigt måste vara en närvarande del i politikers, planerares och krisberedskapsorganisationers arbete. Ett sätt att vara väl förberedd inför översvämningar är att ta fram översvämningsområden för olika stora vattenflöden. Därför har det inom projektet KRIS-GIS®, beställt och finansierat av Krisberedskapsmyndigheten, gjorts en mer detaljerad specialstudie över översvämningar kring Eskilstunaån. Tillförlitligheten hos framtagna översvämningsområden beror framför allt av två faktorer: korrekt vattenflödessimulering och korrekt beskrivning av terrängen. I denna studie har den endimensionella modellen HEC-RAS använts för flödessimuleringen och för beskrivning av terrängen har en flygburen 3D-laserskanning över området kring Eskilstunaån utförts. Dessutom har ekolodning utförts för att möjliggöra beskrivning av bottentopografin i Eskilstunaån. Samtliga höjddatapunkter kopplades ihop i ett GIS till ett triangulärt oregelbundet nätverk, TIN. Därefter lades sektioner tvärs över vattendraget och omgivande terräng. Dessa tvärsektioner tilldelades höjdvärden från TIN-modellen innan de exporterades till HEC-RAS. Fyra olika vattenföringar simulerades i HEC-RAS: medelvattenföringen på 23,7 m3/s, årsfloden på 70 m3/s, 100-årsflödet på 123 m3/s samt högsta beräknade flödet på 198 m3/s. Dessutom har det gjorts några alternativa körningar med varierande värden på Mannings n, dvs. markfriktion. Efter körningar i HEC-RAS, exporterades resulterande vattennivåer tillbaka till GISet där ett resultatraster skapades, där varje rastercell visades som översvämmad eller ej, och i förekommande fall översvämmat djup. Resultaten av översvämningsanalyserna visar att betydligt säkrare översvämningsprognoser nu kan göras när tillgång till terrängmodeller av hög kvalitet finns. Vid tidigare studier har Lantmäteriets höjddatabas använts, där höjder finns representerade med ett värde per 50-metersruta. Från att terrängmodellen har varit den begränsande faktorn övergår i stället en korrekt beskrivning av markens råhet eller friktion, uttryckt som Mannings n, till att vara den begränsande faktorn. Det rekommenderas därför att differentiera råhetsvärdena beroende på vilken markanvändningstyp som finns längs med vattendraget. Speciellt viktigt är detta i flacka områden. För Eskilstunaåns nordligaste delar är det viktigt att vattennivån i Mälaren bedöms korrekt. För att sprida och kunna dra nytta av resultaten framtagna i KRIS-GIS®-projektet rekommenderas det att färdiga översvämningspolygoner kan användas av kommuner, räddningstjänst osv. i deras arbete. De kan ringa eller automatiskt få information, från t.ex. SMHI eller vattenregleringsföretag, som innehåller upplysningar om förväntade flöden. Motsvarande polygon för förväntat flöde visas i ett GIS och direkt har man lägesbilden klart för sig. Utöver detta har även visualiseringsaspekter behandlats.

  • 10.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Arnberg, Wolter
    Stockholm University.
    A harmonized GIS course curriculum for Swedish universities2007Ingår i: EUC'07 HERODOT Proceedings: ESRI European User Conference 2007: Stockholm, Sweden, 25-27 September 2007, 2007, s. 10 s.-Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    With the implementation of the Bologna declaration, European and other universities must change or adjust courses and programmes so they fit into the Bologna model. In Sweden this will take place during 2007. The intention with the declaration, for example, is that a basic course in one subject at one university should be treated as equivalent to the same type of course at another university. Once a year, the recently formed section for education of the Swedish Cartographic Society gathers university lecturers and others for an education conference to discuss matters concerning higher education in geomatics, geoinformatics, geography, etc. Last year’s conference identified the need for a harmonized course curriculum in basic GIS. One of the advantages of such a course is easier transfer of study records for inclusion of course credits in study programmes at other universities. Therefore, an attempt has been made to write a harmonized course curriculum for basic GIS. The course will contain about 50% common content and about 50% of content decided by the individual university. The common content will be described as learning outcomes, and then it is up to the universities to place the learning outcomes into a context. Thanks to this common core, the course can be given for such diverse programmes as archaeology, land surveying, or economy, and still be able to include the required knowledge for students to continue on more advanced courses at other universities.

  • 11.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Bergquist, Arne
    Lantmäteriet.
    Översvämningskarteringars tillförlitlighet2009Ingår i: Kart & Bildteknik (Mapping and Image Science), ISSN 1651-792X, nr 4, s. 33-35Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    I ett tidigare nummer av Kart & Bildteknik beskrevs ett pågående forskningsprojekt som försökte ta reda på om det finns en optimal kvalitet på geografisk information som underlag för detaljerad översvämningskartering (Bergquist, Brandt & Klang, 2008). Projektet är nu avslutat och avrapporterat i Brandt (2009) och Klang och Klang (2009). Av resultaten framgår bland annat hur mycket tillförlitligheten av en översvämningskartering minskar med graden av försämrad höjdmodell, vilken utgör ett av de viktigaste underlagen för en översvämningsanalys. I samband med EUs översvämningsdirektiv (Europaparlamentets och rådets direktiv, 2007) föranleder detta en diskussion om vilka översvämningskarteringar som krävs för att uppfylla direktivet.

  • 12.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Jiang, Bin
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    3D geovisualization as a communication and analysis tool in fluvial geomorphology2004Ingår i: Geoinformatics 2004: proceedings of the 12th International Conference on Geoinformatics - Geospatial Information Research: Bridging the Pacific and Atlantic, University of Gävle, Sweden, 7-9 June 2004, Gävle: Gävle University Press , 2004, s. 339-346Konferensbidrag (Refereegranskat)
    Abstract [en]

    The fields of hydrology and fluvial geomorphology get more and more attention in the general public. The reason for this is changed climate patterns with increased frequencies of storms and river flooding and as a result changed geomorphology and living conditions for the inhabitants of the area. With the development of 3D geovisualization, hydrological and geomorphological processes can be better simulated and visualized. Thus not only the domain specialists, but also the general public can appreciate very complex hydrological processes and resulting geomorphology. This is of great value since a high frequency of storms and flooding has been a big issue for politicians, planners, and the general public. It is in this sense that 3D geovisualization can be an important tool for analysis and communication. Complex hydrological and geomorphological processes can be effectively simulated and analyzed by the domain specialists while efficient and effective visualization provides a common platform for communication among domain specialists and the general public. This paper will discuss and illustrate these issues using a case study of geomorphology along the Reventazón River, downstream from the Cachí Reservoir in Costa Rica, due to the release of extreme amounts of sediment during flushing of the reservoir.

  • 13.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Karlsson, Janne Margrethe
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Ollert-Hallqvist, Pia
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Harmonization of GI educations in Sweden and the Bologna process: viewpoints of University of Gävle2006Ingår i: Fifth European GIS Education Seminar (EUGISES 2006), 2006, s. 10-Konferensbidrag (Refereegranskat)
    Abstract [en]

    With the implementation of the Bologna declaration, many study programmes and course curricula needs to be updated and revised. This paper describes the current situation in Sweden regarding GIT educations and courses and whether a harmonization is needed. A survey was made to see which GIT courses that are given and at which level they are given at the various universities. For some universities, interviews were conducted about their courses’ contents and their strategies for determining course levels. Discussions were also made about harmonization of courses between Swedish universities. Some problems due to lack of harmonization was noted, which probably will be more severe in the future due to increased student mobility. To harmonize courses, Bloom’s revised taxonomy is put forward as a tool which is used to clearly state the level of the course in relation to learning objectives.

  • 14.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Larsson, Anders
    Göteborgs universitet.
    Kartografiska Sällskapets utbildningssektion: ett nytt tillskott i KS-familjen2006Ingår i: Kart- & bildteknik, ISSN 1651-792X, Vol. 21, nr 2, s. 10-11Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    På Kartografiska Sällskapets årsmöte i Jönköping den 21 mars beslutades att inrätta en ny sektion inom sällskapet – en utbildningssektion. Denna artikel beskriver bakgrunden till sektionen och dess verksamhetsidé. Utbildningssektionens embryo tillkom för tre år sedan efter förslag från ULI som delegerade uppgiften till Geomatikprogrammet vid Högskolan i Gävle. Tanken vara att skapa ett forum för lärare inom geomatikområdet. Både för att sammanföra lärare från olika lärosäten, för att öka förståelsen för varandras arbeten, och för att kunna förbättra möjligheterna till samarbete.

  • 15.
    Brandt, S. Anders
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Lim, Nancy J.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Visualising DEM-related flood-map uncertainties using a disparity-distance equation algorithm2016Ingår i: IAHS-AISH Proceedings and Reports / [ed] A. H. Schumann, G. Blöschl, A. Castellarin, J. Dietrich, S. Grimaldi, U. Haberlandt, A. Montanari, D. Rosbjerg, A. Viglione, and S. Vorogushyn, Göttingen: Copernicus Publications on behalf of International Association of Hydrological Sciences (IAHS) , 2016, Vol. 373, s. 153-159Konferensbidrag (Refereegranskat)
    Abstract [en]

    The apparent absoluteness of information presented by crisp-delineated flood boundaries can lead tomisconceptions among planners about the inherent uncertainties associated in generated flood maps. Even mapsbased on hydraulic modelling using the highest-resolution digital elevation models (DEMs), and calibrated withthe most optimal Manning’s roughness (n) coefficients, are susceptible to errors when compared to actual floodboundaries, specifically in flat areas. Therefore, the inaccuracies in inundation extents, brought about by thecharacteristics of the slope perpendicular to the flow direction of the river, have to be accounted for. Instead ofusing the typical Monte Carlo simulation and probabilistic methods for uncertainty quantification, an empiricalbaseddisparity-distance equation that considers the effects of both the DEM resolution and slope was used tocreate prediction-uncertainty zones around the resulting inundation extents of a one-dimensional (1-D) hydraulicmodel. The equation was originally derived for the Eskilstuna River where flood maps, based on DEM dataof different resolutions, were evaluated for the slope-disparity relationship. To assess whether the equation isapplicable to another river with different characteristics, modelled inundation extents from the Testebo Riverwere utilised and tested with the equation. By using the cross-sectional locations, water surface elevations, andDEM, uncertainty zones around the original inundation boundary line can be produced for different confidences.The results show that (1) the proposed method is useful both for estimating and directly visualising modelinaccuracies caused by the combined effects of slope and DEM resolution, and (2) the DEM-related uncertaintiesalone do not account for the total inaccuracy of the derived flood map. Decision-makers can apply it to alreadyexisting flood maps, thereby recapitulating and re-analysing the inundation boundaries and the areas that areuncertain. Hence, more comprehensive flood information can be provided when determining locations whereextra precautions are needed. Yet, when applied, users must also be aware that there are other factors that caninfluence the extent of the delineated flood boundary.

  • 16.
    Brandt, Sven Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Modeling and visualizing uncertainties of flood boundary delineation: algorithm for slope and DEM resolution dependencies of 1D hydraulic models2016Ingår i: Stochastic environmental research and risk assessment (Print), ISSN 1436-3240, E-ISSN 1436-3259, Vol. 30, nr 6, s. 1677-1690Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    As flood inundation risk maps have become a central piece of information for both urban and risk management planning, also a need to assess the accuracies and uncertainties of these maps has emerged. Most maps show the inundation boundaries as crisp lines on visually appealing maps, whereby many planners and decision makers, among others, automatically believe the boundaries are both accurate and reliable. However, as this study shows, probably all such maps, even those that are based on high-resolution digital elevation models (DEMs), have immanent uncertainties which can be directly related to both DEM resolution and the steepness of terrain slopes perpendicular to the river flow direction. Based on a number of degenerated DEMs, covering areas along the Eskilstuna River, Sweden, these uncertainties have been quantified into an empirically-derived disparity distance equation, yielding values of distance between true and modeled inundation boundary location. Using the inundation polygon, the DEM, a value representing the DEM resolution, and the desired level of confidence as inputs in a new-developed algorithm that utilizes the disparity distance equation, the slope and DEM dependent uncertainties can be directly visualized on a map. The implications of this strategy should benefit planning and help reduce high costs of floods where infrastructure, etc., have been placed in flood-prone areas without enough consideration of map uncertainties.

  • 17.
    Collentine, Dennis
    et al.
    Högskolan i Gävle, Akademin för utbildning och ekonomi, Avdelningen för ekonomi, Nationalekonomi. Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Futter, M. N.
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Realising the potential of natural water retention measures in catchment flood management: Trade-offs and matching interests2018Ingår i: Journal of Flood Risk Management, ISSN 1753-318X, E-ISSN 1753-318X, Vol. 11, nr 1 (SI), s. 76-84Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Natural water retention measures (NWRM) are a multifunctional form of green infrastructure that can play an important role in catchment-scale flood risk management. While green infrastructure based on natural processes is increasingly recognised as being complementary to traditional flood control strategies based on grey infrastructure in urban areas, there are a number of outstanding challenges with their widespread uptake. At a catchment scale, it is widely accepted that NWRM in upstream areas based on the concept of ’keeping the rain where it falls’ can help reduce the risk of downstream flooding by enhancing or restoring natural hydrological processes including interception, evapotranspiration, infiltration, and ponding. However, both the magnitude of flood risk reduction and the institutional structures needed for widespread uptake of NWRM are inadequately understood. Implementing NWRM can involve trade-offs, especially in agricultural areas. Measures based on drainage management and short rotation forestry may help ’keep the rain where it falls’ but can result in foregone farm income. To identify situations where the implementation of NWRM may be warranted, an improved understanding of the likely reductions in downstream urban flood risk, the required institutional structures for risk management and transfer, and mutually acceptable farm compensation schemes are all needed.

  • 18.
    Cooke, Sarah
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Using remote sensing and aerial archaeology to detect pit house features in Worldview-2 satellite imagery.: A case study for the Bridge River archaeological pit house village in south-central British Columbia, Canada.2017Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    It is well known that archaeological sites are important sources for understanding past human activity. However, those sites yet to be identified and further investigated are under a great risk of being lost or damaged before their archaeological significance is fully recognized. The aim of this research was to analyze the potential use of remote sensing and aerial archaeology techniques integrated within a geographic information system (GIS) for the purpose of remotely studying pit house archaeology. As pit house archaeological sites in North America have rarely been studied with a focus in remote sensing, this study intended to identify these features by processing very high resolution satellite imagery and assessing how accurately the identified features could be automatically mapped with the use of a GIS. A Worldview-2 satellite image of the Bridge River pit house village in Lillooet, south-central British Columbia, was processed within ArcGIS 10.1 (ESRI), ERDAS Imagine 2011 (Intergraph) and eCognition Developer 8 (Trimble) to identify spatial and spectral queues representing the pit house features. The study outlined three different feature extraction methods (GIS-based, pixel-based and object-based) and evaluated which method presented the best results. Though all three methods produced similar results, the potential for performing object-based feature extraction for research in aerial archaeology proved to be more advantageous than the other two extraction methods tested.

  • 19.
    Eliasson, Ingegärd
    et al.
    Urban Climate Group, Physical Geography, Department of Earth Sciences, Göteborg, Sweden.
    Knez, Igor
    Högskolan i Gävle, Institutionen för pedagogik, didaktik och psykologi, Ämnesavdelningen för psykologi.
    Westerberg, Ulla
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för byggnadskvalitet.
    Thorsson, Sofia
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för byggnadskvalitet. Urban Climate Group, Physical Geography, Department of Earth Sciences, Göteborg, Sweden.
    Lindberg, Fredrik
    Urban Climate Group, Physical Geography, Department of Earth Sciences, Göteborg, Sweden.
    Climate and behaviour in a Nordic city2007Ingår i: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 82, nr 1-2, s. 72-84Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Four urban public spaces, representing various designs and microclimates, were investigated in Gothenburg, Sweden, in order to estimate how weather and microclimate affect people in urban outdoor environments. The research strategy was both multidisciplinary and interdisciplinary and included scientists from three disciplines: architecture, climatology and psychology. The project is based on common case studies carried out during four seasons, including measurements of meteorological variables, interviews and observations of human activity at each place. Multiple regression analysis of meteorological and behavioural data showed that air temperature, wind speed and clearness index (cloud cover) have a significant influence on people's assessments of the weather, place perceptions and place-related attendance. The results support the arguments in favour of employing climate sensitive planning in future urban design and planning projects, as the physical component of a place can be designed to influence the site-specific microclimate and consequently people's place-related attendance, perceptions and emotions.

  • 20.
    Hedblom, M.
    et al.
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Hedenås, H.
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Blicharska, M.
    Natural Resources and Sustainable Development, Department of Earth Sciences, Uppsala University, Uppsala, Sweden; Swedish Biodiversity Centre, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Adler, S.
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Asian School of the Environment, Nanyang Technological University, Nanyang, Singapore .
    Knez, Igor
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Psykologi.
    Mikusiński, G.
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, Riddarhyttan, Sweden; School for Forest Management, Swedish University of Agricultural Sciences, Skinnskatteberg, Sweden .
    Svensson, J.
    Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Sandström, S.
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Sandström, P.
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Wardle, D. A.
    Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Asian School of the Environment, Nanyang Technological University, Nanyang, Singapore.
    Landscape perception: linking physical monitoring data to perceived landscape properties2019Ingår i: Landscape research, ISSN 0142-6397, E-ISSN 1469-9710Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Changes in the landscape affect not only people’s well-being but also how people perceive and use the landscape. An increasing number of policies have highlighted the importance of conserving a landscape’s recreational and aesthetical values. This study develops and evaluates a model that links people’s perceptions of a mountain landscape to physical monitoring data. Using a questionnaire, we revealed how respondents working with the Swedish mountains characterise the Magnificent Mountain landscape (as defined by Swedish policy objectives) and translated these characteristics into data from the National Inventory of Landscapes in Sweden (NILS). We found 14 potential indicators that could be derived from the existing NILS physical monitoring data and which could be used to monitor changes in the landscape values as perceived by people. Based on the results, we suggest how to simultaneously utilise field sampling of physical data and field photos to provide temporal information about landscape perception.

  • 21.
    Jiang, Bin
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Review of Else/Where: Mapping - New Cartographies of Networks and Territories2008Ingår i: Cartographic Journal, ISSN 0008-7041, E-ISSN 1743-2774, Vol. 36, nr 5, s. 769-771Artikel, recension (Övrigt vetenskapligt)
  • 22.
    Jiang, Bin
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Wholeness as a hierarchical graph to capture the nature of space2015Ingår i: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 29, nr 9, s. 1632-1648Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    According to Christopher Alexander’s theory of centers, a whole comprises numerous, recursively defined centers for things or spaces surrounding us. Wholeness is a type of global structure or life-giving order emerging from the whole as a field of the centers. The wholeness is an essential part of any complex system and exists, to some degree or other, in spaces. This paper defines wholeness as a hierarchical graph, in which individual centers are represented as the nodes and their relationships as the directed links. The hierarchical graph gets its name from the inherent scaling hierarchy revealed by the head/tail breaks, which is a classification scheme and visualization tool for data with a heavy-tailed distribution. We suggest that (1) the degrees of wholeness for individual centers should be measured by PageRank (PR) scores based on the notion that high-degree-of-life centers are those to which many high-degree-of-life centers point, and (2) that the hierarchical levels, or the ht-index of the PR scores induced by the head/tail breaks, can characterize the degree of wholeness for the whole: the higher the ht-index, the more life or wholeness in the whole. Three case studies applied to the Alhambra building complex and the street networks of Manhattan and Sweden illustrate that the defined wholeness captures fairly well human intuitions on the degree of life for the geographic spaces. We further suggest that the mathematical model of wholeness be an important model of geographic representation, because it is topological oriented, which enables us to see the underlying scaling structure. The model can guide geodesign, which should be considered as the wholeness-extending transformations that are essentially like the unfolding processes of seeds or embryos, for creating built and natural environments of beauty or with a high degree of wholeness.

  • 23.
    Jiang, Bin
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Brandt, S. Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    A Fractal Perspective on Scale in Geography2016Ingår i: ISPRS International Journal of Geo-information, ISSN 2220-9964, Vol. 5, nr 6, artikel-id 95Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Scale is a fundamental concept that has attracted persistent attention in geography literature over the past several decades. However, it creates enormous confusion and frustration, particularly in the context of geographic information science, because of scale-related issues such as image resolution and the modifiable areal unit problem (MAUP). This paper argues that the confusion and frustration arise from traditional Euclidean geometric thinking, in which locations, directions, and sizes are considered absolute, and it is now time to revise this conventional thinking. Hence, we review fractal geometry, together with its underlying way of thinking, and compare it to Euclidean geometry. Under the paradigm of Euclidean geometry, everything is measurable, no matter how big or small. However, most geographic features, due to their fractal nature, are essentially unmeasurable or their sizes depend on scale. For example, the length of a coastline, the area of a lake, and the slope of a topographic surface are all scale-dependent. Seen from the perspective of fractal geometry, many scale issues, such as the MAUP, are inevitable. They appear unsolvable, but can be dealt with. To effectively deal with scale-related issues, we present topological and scaling analyses illustrated by street-related concepts such as natural streets, street blocks, and natural cities. We further contend that one of the two spatial properties, spatial heterogeneity, is de facto the fractal nature of geographic features, and it should be considered the first effect among the two, because it is global and universal across all scales, which should receive more attention from practitioners of geography.

  • 24.
    Jiang, Bin
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Yin, Junjun
    Department of Geography and Geographic Information Science, University of Illinois at Urbana and Champaign, Champaign-Urbana, IL, USA.
    Liu, Qingling
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad.
    Zipf’s law for all the natural cities around the world2015Ingår i: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 29, nr 3, s. 498-522Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Two fundamental issues surrounding research on Zipf’s law regarding city sizes are whether and why this law holds. This paper does not deal with the latter issue with respect to why, and instead investigates whether Zipf’s law holds in a global setting, thus involving all cities around the world. Unlike previous studies, which have mainly relied on conventional census data such as populations and census-bureau-imposed definitions of cities, we adopt naturally (in terms of data speak for itself) delineated cities, or natural cities, to be more precise, in order to examine Zipf’s law. We find that Zipf’s law holds remarkably well for all natural cities at the global level, and it remains almost valid at the continental level except for Africa at certain time instants. We further examine the law at the country level, and note that Zipf’s law is violated from country to country or from time to time. This violation is mainly due to our limitations; we are limited to individual countries, or to a static view on city-size distributions. The central argument of this paper is that Zipf’s law is universal, and we therefore must use the correct scope in order to observe it. We further find Zipf’s law applied to city numbers; the number of cities in the largest country is twice as many as that in the second largest country, three times as many as that in the third largest country, and so on. These findings have profound implications for big data and the science of cities. 

  • 25.
    Knez, Igor
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för socialt arbete och psykologi, Psykologi.
    Eliasson, Ingegärd
    Department of Conservation, University of Gothenburg, Göteborg, Sweden.
    Relationships between Personal and Collective Place Identity and Well-Being in Mountain Communities2017Ingår i: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 8, nr JAN, artikel-id 79Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The aim was to investigate the relationships between landscape-related personal and collective identity and well-being of residents living in a Swedish mountain county (N = 850). It was shown that their most valued mountain activities were viewing and experiencing nature and landscape, outdoor recreation, rest and leisure, and socializing with friends/family. Qualitative analyses showed that the most valued aspects of the sites were landscape and outdoor restoration for personal favorite sites, and tourism and alpine for collective favorite sites. According to quantitative analyses the stronger the attachment/closeness/belonging (emotional component of place identity) residents felt to favorite personal and collective sites the more well-being they perceived when visiting these places. Similarly, the more remembrance, thinking and mental travel (cognitive component of place identity) residents directed to these sites the more well-being they perceived in these places. In both types of sites well-being was more strongly predicted by emotional than cognitive component of place-identity. All this indicates the importance of person-place bonds in beneficial experiences of the outdoors, over and above simply being in outdoor environments.

  • 26.
    Knez, Igor
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för inomhusmiljö.
    Thorsson, Sofia
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för inomhusmiljö. Physical Geography, Department of Earth Sciences, Göteborg University, Göteborg, Sweden.
    Influences of culture and environmental attitude on thermal, emotional and perceptual evaluations of a public square2006Ingår i: International journal of biometeorology, ISSN 0020-7128, E-ISSN 1432-1254, Vol. 50, nr 5, s. 258-268Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The main objective of the present quasi-experimental study was to examine the influence of culture (Swedish vs Japanese) and environmental attitude (urban vs open-air person) on participants' thermal, emotional and perceptual assessments of a square, within the PET (physiological equivalent temperature) comfortable interval of 18-23 degrees C. It was predicted that persons living in different cultures with different environmental attitudes would psychologically evaluate a square differently despite similar thermal conditions. Consistent with this prediction, Japanese participants estimated the current weather as warmer than did Swedish participants and, consistent with this, they felt less thermally comfortable on the site, although participants in both countries perceived similar comfortable thermal outdoor conditions according to the PET index. Compared to the Japanese, the Swedes estimated both the current weather and the site as windier and colder, indicating a consistency in weather assessment on calm-windy and warm-cold scales in participants in both cultures. Furthermore, Swedish participants felt more glad and calm on the site and, in line with their character (more glad than gloomy), they estimated the square as more beautiful and pleasant than did Japanese participants. All this indicates that thermal, emotional and perceptual assessments of a physical place may be intertwined with psychological schema-based and socio-cultural processes, rather than fixed by general thermal indices developed in line with physiological heat balance models. In consequence, this implies that thermal comfort indices may not be applicable in different cultural/climate zones without modifications, and that they may not be appropriate if we do not take into account the psychological processes involved in environmental assessment.

  • 27.
    Knez, Igor
    et al.
    Högskolan i Gävle, Institutionen för pedagogik, didaktik och psykologi, Ämnesavdelningen för psykologi.
    Thorsson, Sofia
    hysical Geography, Department of Earth Sciences, Göteborg University, Sweden.
    Thermal, emotional and perceptual evaluations of a park: Cross-cultural and environmental attitude comparisons2008Ingår i: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 43, nr 9, s. 1483-1490Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The main objective of the present study was to examine the influence of culture (Sweden vs. Japan) and environmental attitude (urban vs. open-air person) on participants' thermal, emotional and perceptual assessments of a park, within the physiological equivalent temperature (PET) comfortable interval of 18-23 degrees C. It was predicted that persons sharing different cultures and environmental attitudes might psychologically differently evaluate a Swedish and a Japanese park despite similar thermal conditions. Consistent with this prediction, Japanese were shown to evaluate the weather as warmer and less good for out-door activity than did Swedes, although and according to the PET index participants in both cultures experienced similar comfortable thermal conditions. Japanese were also shown to evaluate the park as more pleasant and warmer place than did Swedes. However, the Japanese felt emotionally less pleasant at the site than did Swedes. An interaction between culture and environmental attitude indicated tentatively a difference in environmental attitude (urban vs. open-air person) between the two countries as regards the place-related wind sensitivity. All these findings are discussed in terms of culture and environmental attitude suggesting that thermal, emotional and perceptual assessments of a physical place may be intertwined with psychological and cultural processes, rather than fixed by general thermal indices developed in line with the physiological heat balance models. (C) 2007 Elsevier Ltd. All rights reserved.

  • 28.
    Knez, Igor
    et al.
    Högskolan i Gävle, Institutionen för pedagogik, didaktik och psykologi, Ämnesavdelningen för psykologi.
    Thorsson, Sofia
    Urban Climate Group, Physical Geography, Earth Sciences Centre, Göteborg University, Göteborg, Sweden.
    Eliasson, Ingegärd
    Urban Climate Group, Physical Geography, Earth Sciences Centre, Göteborg University, Göteborg, Sweden.
    Lindberg, Fredrik
    Urban Climate Group, Physical Geography, Earth Sciences Centre, Göteborg University, Göteborg, Sweden.
    Psychological mechanisms in outdoor place and weather assessment: Towards a conceptual model2009Ingår i: International journal of biometeorology, ISSN 0020-7128, E-ISSN 1432-1254, Vol. 53, nr 1, s. 101-111Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The general aim has been to illuminate the psychological mechanisms involved in outdoor place and weather assessment. This reasoning was conceptualized in a model, tentatively proposing direct and indirect links of influence in an outdoor place-human relationship. The model was subsequently tested by an empirical study, performed in a Nordic city, on the impact of weather and personal factors on participants' perceptual and emotional estimations of outdoor urban places. In line with our predictions, we report significant influences of weather parameters (air temperature, wind, and cloudlessness) and personal factors (environmental attitude and age) on participants' perceptual and emotional estimations of outdoor urban places. All this is a modest, yet significant, step towards an understanding of the psychology of outdoor place and weather assessment.

  • 29.
    Kordi, Maryam
    et al.
    National University of Ireland, National Centre for Geocomputation.
    Brandt, Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad/GIS-Institutet.
    Effects of increasing fuzziness on analytic hierarchy process for spatial multicriteria decision analysis2012Ingår i: Computers, Environment and Urban Systems, ISSN 0198-9715, E-ISSN 1873-7587, Vol. 36, nr 1, s. 43-53Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Multicriteria decision analysis (MCDA) involves techniques which relatively recently have received great increase in interest for their capabilities of solving spatial decision problems. One of the most frequently used techniques of MCDA is Analytic Hierarchy Process (AHP). In the AHP, decision-makers make pairwise comparisons between different criteria to obtain values of their relative importance. The AHP initially only dealt with crisp numbers or exact values in the pairwise comparisons, but later it has been modified and adapted to also consider fuzzy values. It is necessary to empirically validate the ability of the fuzzified AHP for solving spatial problems. Further, the effects of different levels of fuzzification on the method have to be studied. In the context of a hypothetical GIS-based decision-making problem of locating a dam in Costa Rica using real-world data, this paper illustrates and compares the effects of increasing levels of uncertainty exemplified through different levels of fuzzification of the AHP. Practical comparison of the methods in this work, in accordance with the theoretical research, revealed that by increasing the level of uncertainty or fuzziness in the fuzzy AHP, differences between results of the conventional and fuzzy AHPs become more significant. These differences in the results of the methods may affect the final decisions in decision-making processes. This study concludes that the AHP is sensitive to the level of fuzzification and decision-makers should be aware of this sensitivity while using the fuzzy AHP. Furthermore, the methodology described may serve as a guideline on how to perform a sensitivity analysis in spatial MCDA. Depending on the character of criteria weights, i.e. the degree of fuzzification, and its impact on the results of a selected decision rule (e.g. AHP), the results from a fuzzy analysis may be used to produce sensitivity estimates for crisp AHP MCDA methods.

  • 30.
    Ma, Ding
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Sandberg, Mats
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energisystem.
    Jiang, Bin
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Characterizing the Heterogeneity of the OpenStreetMap Data and Community2015Ingår i: ISPRS International Journal of Geo-Information, ISSN 2220-9964, Vol. 4, nr 2, s. 535-550Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OpenStreetMap (OSM) constitutes an unprecedented, free, geographical information source contributed by millions of individuals, resulting in a database of great volume and heterogeneity. In this study, we characterize the heterogeneity of the entire OSM database and historical archive in the context of big data. We consider all users, geographic elements and user contributions from an eight-year data archive, at a size of 692 GB. We rely on some nonlinear methods such as power law statistics and head/tail breaks to uncover and illustrate the underlying scaling properties. All three aspects (users, elements, and contributions) demonstrate striking power laws or heavy-tailed distributions. The heavy-tailed distributions imply that there are far more small elements than large ones, far more inactive users than active ones, and far more lightly edited elements than heavy-edited ones. Furthermore, about 500 users in the core group of the OSM are highly networked in terms of collaboration.

  • 31.
    Milutinovic, Goran
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för datavetenskap och samhällsbyggnad, Datavetenskap.
    Ahonen-Jonnarth, Ulla
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för datavetenskap och samhällsbyggnad, Besluts-, risk- och policyanalys.
    Seipel, Stefan
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för datavetenskap och samhällsbyggnad, Datavetenskap. Division of Visual Information and Interaction, Department of Information Technology, Uppsala University, Uppsala, Sweden.
    Brandt, S. Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för datavetenskap och samhällsbyggnad, Samhällsbyggnad.
    The impact of interactive visualization on trade-off-based geospatial decision-making2019Ingår i: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 33, nr 10, s. 2094-2123Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In a previous work we developed GISwaps, a novel method for geospatial decision-making based on Even Swaps. In this paper, we present the results of an evaluation of a visualization framework integrated with this method, implemented within a decision support system. This evaluation is based on two different studies. In the quantitative study, 15 student participants used GISwaps with no visual features, and 15 participants used GISwaps with the integrated visual framework, as the tool in a solar farm site location case study. The results of the quantitative evaluation show positive impact of the visualization in terms of increased coherency in trade-offs. The results also show a statistically significant difference in average trade-off values between the groups, with users from the non-visual group setting on average 20% higher trade-off values compared with the users in the visual group. In the qualitative study, we had one expert in GIS, two experts in decision-making and two experts in solar energy as a focus user group. Data in this study were obtained by observations and semi-structured interviews with the participants. The impact of the visualization framework was assessed positively by all participants in the expert group. 

  • 32.
    Myagmartseren, Purevtseren
    et al.
    Department of Geography, School of Arts and Science, National University of Mongolia, Ulaanbaatar, Mongolia.
    Buyandelger, Myagmarsuren
    Land Administration Department of Capital City, Ulaanbaatar, Mongolia.
    Brandt, S. Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Implications of a Spatial Multicriteria Decision Analysis for Urban Development in Ulaanbaatar, Mongolia2017Ingår i: Mathematical problems in engineering (Print), ISSN 1024-123X, E-ISSN 1563-5147, Vol. 2017, artikel-id 2819795Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    New technology has provided new tools for effective spatial planning. Through the example of locating suitable sites for urbandevelopment in Ulaanbaatar, this paper illustrates how multicriteria decision analysis and geographical information systems canbe used for more effective urban planning. Several constraint and factor criteria were identified, transformed into map layers,and weighted together using the analytic hierarchy process. Besides localization results, this study shows the effect of using poorelevation data and how a sensitivity analysis can be applied to yield further information, spot weighting weaknesses, and assess thequality of the criteria.

  • 33.
    Sahlin, Eva A.U.
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad/GIS-Institutet.
    Glasser, Neil F.
    Institute of Geography and Earth Sciences, Aberystwyth University, Wales.
    The Geomorphological Map of Wales and its use in Geoconservation Assessment (poster)2011Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    A geomorphological map is probably the most comprehensive way of illustrating the landform distribution, surface form, material, age, and the processes responsible for the landscape look. As such geomorphological maps are invaluable in the fields of geoconservation assessment, evaluation and management. It is therefore an oddity, as well as an inconvenience, that there is no systematic landform inventory or mapping of the geomorphology that is comparable to the surveys undertaken for geology or soils in the UK. For that purpose the project of “Developing a Geomorphological Map of Wales” was initiated by the Countryside Council for Wales (CCW) as part of a PhD project investigating the Quaternary glaciations of Wales.

    To develop a mapping methodology suitable for the Welsh landscape, three contrasting areas were selected to provide a wide range of geomorphological features. Aerial photography, satellite imagery, digital elevation models, and field investigations of landform/sediment associations, formed the foundation for landform interpretation, which were compiled in a GIS.

    Geomorphological maps of Cadair Idris, and the Central and North Cambrian Mountains were produced, scale 1:10 000 – 1:25 000. The maps form an extensive inventory of the geomorphological geodiversity, and were used for providing data to palaeoglaciological reconstructions and making geoconservation recommendations to the CCW. The recommended sites are of regional interest; their rareness, distinct morphology, interesting research and educational value makes them worthy of RIGS (Regional Important Geodiversity Sites) protection.

    A Geomorphological Map of Wales has the potential for wider practical, scientific and educational benefits, such as for governmental bodies, local authority planners, tourism, researchers, teachers, landowners and land managers. Without a full account of all the geomorphological components of a landscape, there can be no full understanding of the landscape history or the various landforming processes. Important geodiversity sites may be overlooked, badly managed or lost before their full potential are realised.

  • 34.
    Sahlin, Eva A.U.
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Glasser, Neil F.
    Institute of Geography and Earth Sciences, Aberystwyth University, Wales.
    Hambrey, Michael, J.
    Institute of Geography and Earth Sciences, Aberystwyth University, Wales.
    Jansson, Krister, N.
    Institutionen för naturgeografi och kvartärgeologi, Stockholms universitet.
    Connectivity analyses of valley patterns reveal Devensian glacial drainage activity in Mid-Wales (poster)2009Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Coastal valleys in the west part of Mid-Wales, such as the Mawddach, Dysynni, Tal-y-llyn and Dyfi, are believed to have acted as corridors for ice which drained the Welsh Ice Cap during the Devensian. Connectivity analyses of valley patterns from detailed digital elevation models, and interpretation of satellite images and aerial photographs show the existence of large variations in the amount of glacial modification between these valleys. Although all the valleys are glacially over-deepened along Silurian fault lines, only the Dyfi basin exhibits a dendritic pattern, with V-shaped cross profiles and valley spurs typical of valleys formed by fluvial processes.

    The connectivity analyses show that the Dyfi basin exhibits a purely dendritic pattern with little glacial modification of the preglacial fluvial valley pattern in form of valley breaching. It is proposed here that the general river valley morphology of the Dyfi basin is of a pre-Late Devensian age. This suggests a complex glacial drainage history, where cold-based ice was not only confined to the interior uplands, but also covered low-altitude areas previously believed to be a major drainage conduit for the Welsh Ice Cap. This indicates that Late Devensian glacial erosion was not as intense as previously believed and larger areas might have been overlain by cold-based ice.

  • 35.
    Sahlin, Eva A.U.
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för samhällsbyggnad.
    Glasser, Neil F.
    Institute of Geography and Earth Sciences, Aberystwyth University, Wales.
    Jansson, Krister N.
    Institutionen för naturgeografi och kvartärgeologi, Stockholms Universitet.
    Hambrey, Michael J.
    Institute of Geography and Earth Sciences, Aberystwyth University, Wales.
    Evidence for cold-based ice at low altitudes: Preservation of a preglacial fluvial valley system in the Dyfi basin, Wales (poster)2009Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Coastal valleys in the west part of mid-Wales, such as the Mawddach, Dysynni, Tal-y-llyn and Dyfi, are believed to have acted as corridors for ice which drained the Welsh Ice Cap during the Devensian. Analysis of detailed digital elevation models and interpretation of satellite images and aerial photographs show the existence of large variations in the amount of glacial modification between these valleys. Although all the valleys are glacially over-deepened along Silurian fault lines, only the Dyfi basin exhibits a dendritic pattern, with V-shaped cross profiles and valley spurs typical of valleys formed by fluvial processes. Connectivity analysis of the Dyfi basin shows that it exhibits a nearly dendritic pattern with connectivity α and β values of 0.74 and 1.01 respectively, with little glacial modification of the preglacial fluvial valley pattern in the form of valley breaching. It is proposed that the general river valley morphology of the Dyfi basin is of a pre-Late Devensian age. Several examples have been identified of glacial meltwater incision into a well-developed pre-existing river valley system, causing river capture across watersheds. The degree of preservation of the pre-glacial fluvial valley system within the Dyfi basin indicates limited modification by glacial processes, despite the area being subjected to Late Devensian glacier activity. It is possible that major parts of the basin were covered by cold-based or slow-moving ice close to or under a migrating ice divide, with the major ice drainage occurring along the weaker zone of the Pennal Fault, causing minor adjustments to the surrounding interfluves and uplands.

  • 36.
    Sarady, Maria
    et al.
    Department of Social and Economic Geography, Uppsala University.
    Sahlin, Eva A. U.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    The influence of snow cover on ground freeze-thaw frequency, intensity, and duration: An experimental study conducted in coastal northern Sweden2016Ingår i: Norsk Geografisk Tidsskrift, ISSN 0029-1951, E-ISSN 1502-5292, Vol. 70, nr 2, s. 82-94Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The impact of snow cover on seasonal ground frost and freeze-thaw processes is not yet fully understood. The authors therefore examined how snow cover affects seasonal ground frost in a coastal setting in northern Sweden. Air and soil temperatures were recorded in a paired-plot experiment, both with and without snow cover, during the frost season 2012–2013. The frequency, duration, and intensity of the freeze-thaw cycles during the frost season were calculated. The results showed that the freeze-thaw frequency was 57% higher at the soil surface and the intensity 10 °C colder in the spring of 2013, when the ground lacked snow cover. Furthermore, the duration of the seasonal freeze-thaw cycle was 30 days longer on average in cases where there was natural snow accumulation. The correlation between air and ground surface temperatures weakened with increased snow-cover depth. The authors conclude that continued increases in air temperature and decreases in snow in coastal northern Sweden might alter freeze-thaw cycles and thus affect natural and human systems such as geomorphology, ecology, spatial planning, transport, and forestry.

  • 37.
    Schmidinger, Helen
    et al.
    Uppsala universitet.
    Brandt, S. Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Närområdesexkursioner och inre motivation för bättre lärande: en studie i svenska gymnasieskolan2015Ingår i: Nordidactica: Journal of Humanities and Social Science Education, ISSN 2000-9879, Vol. 2015, nr 1, s. 22-46Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper reports results from two locally based geography excursions at two secondary schools in Sweden, in order to study how the pupils’ own experience from the local neighborhood, intrinsic motivation, and flow interact during the learning process to see if these parameters affect their understanding and knowledge of the studied objects. The methods used were observations during the excursions, as well as interviews and questionnaires afterwards. The results show that the pupils believe that they learn more when studying objects in their natural environment, i.e. outside their classroom. Furthermore, the results show that intrinsic motivation may be difficult, but not impossible, to achieve, and also that there are good opportunities for attaining flow. If the pupils can see patterns and structures of the objects and processes studied, they will start understand and gain knowledge. This process will increase chances for intrinsic motivation, which will further increase understanding and knowledge, and attaining flow. Once achieved, a spiral process of continued flow, continued intrinsic motivation, and increasing knowledge may be maintained.

  • 38.
    Schmidinger, Helen
    et al.
    Uppsala universitet.
    Molin, Lena
    Uppsala universitet.
    Brandt, S. Anders
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad/GIS-Institutet.
    Excursions in school – past and present from Swedish and Anglo-Saxon perspectives2014Ingår i: European Journal of Geography, ISSN 1792-1341, Vol. 5, nr 4, s. 87-101Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The purpose of this article is to present the results from a review of literature on geography excursions and field studies and to discuss their development over time, focusing on purpose, content, method, and execution. The scope was limited to Swedish and Anglo-Saxon literature, produced after the year 1900. The results show that excursions and field studies have since long been important methods in school teaching, not only in the subject geography. One of the purposes of using excursions and field studies in teaching is to facilitate the learning process of pupils and students. Several authors arguing that learning improved when the objects are studied in the real world. We can see that a continuous process of change has altered contents as well as conduction of the excursions. The previous instrumental orientation has moved toward more pupil-participating work methods. Today preparation is a keyword in most texts on excursions, and the perspectives have been broadened.

  • 39.
    Seipel, Stefan
    et al.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Datavetenskap.
    Lim, Nancy J.
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Color map design for visualization in flood risk assessment2017Ingår i: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 31, nr 11, s. 2286-2309Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Visualizations of flood maps from simulation models are widely used for assessing the likelihood of flood hazards in spatial planning. The choice of a suitable type of visualization as well as efficient color maps is critical to avoid errors or bias when interpreting the data. Based on a review of previous flood uncertainty visualization techniques, this paper identifies areas of improvements and suggests criteria for the design of a task-specific color scale in flood map visualization. We contribute a novel color map design for visualizing probabilities and uncertainties from flood simulation ensembles. A user study encompassing 83 participants was carried out to evaluate the effects of this new color map on user’s decisions in a spatial planning task. We found that the type of visualization makes a difference when it comes to identification of non-hazardous sites in the flood risk map and when accepting risks in more uncertain areas. In comparison with two other existing visualization techniques, we observed that the new design was superior both in terms of task compliance and efficiency. In regions with uncertain flood statuses, users were biased toward accepting less risky locations with our new color map design.

  • 40.
    Sjö, Maria
    et al.
    Högskolan i Gävle, Institutionen för teknik och byggd miljö.
    Tähtikivi, Annelie
    Högskolan i Gävle, Institutionen för teknik och byggd miljö.
    Geomorfologisk kartläggnng av Kungsbäckens avrinningsområde2006Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [sv]

    År 2015 ska alla avrinningsområden i EU-länderna vara fastställda. Anledningen till detta är att år 2000 trädde ett vattendirektiv i kraft. Syftet med direktivet är att skapa en helhetssyn för vattenresurserna i Europa och för att få en enhetlig och övergripande lagstiftning. I Sverige har SMHI redan bestämt vattendelare och avrinningsområden för ett stort antal områden i landet, men i och med direktivet har det blivit ett krav. En helhetssyn på vattenresurser tillsammans med kunskaper om geologi är en förutsättning för en hållbar utveckling och ett effektivt tillvaratagande av naturresurserna. Inom samhällsplaneringen spelar geologin en tämligen betydande roll. Vid exempelvis planering av nya bostadsområden är det av stor vikt att veta markens egenskaper.

    Syftet med detta examensarbete var att fastställa Kungsbäckens avrinningsområde samt att göra en geomorfologisk undersökning av området. Arbetet syftade även till att redogöra för några fluvialmorfologiska förekomster kring del av Kungsbäcken - från utloppet vid Gavleån vid Stora Vall till viadukten vid Regementsvägen. Genom att utföra studien som en kombination av naturgeografi och GIT påvisas möjligheterna att utföra olika typer av analyser och beräkningar utifrån de naturresurser som finns i ett område och den moderna tekniken. Vidare kommer resultatet från denna studie att delges SMHI. De kan därmed få nytta av materialet när de, på uppdrag av Naturvårdsverket, skall utföra en kartläggning av Kungsbäckens avrinningsområde.

    För att möjliggöra en geomorfologisk kartläggning av Kungsbäckens avrinningsområde och fastställa dess gränser studerades initialt tillgängligt material såsom tidigare studier, litteratur, terrängkarta, jord- och bergartskartor samt flygfotografier. Vid genomförandet av fastställningen av områdets gränser nyttjades bland annat SMHI:s tidigare gjorda gränser, en av oss gjord analog analys, utifrån tryckta terrängkartan 13H SV samt en flödesmodellering av en i studien gjord höjdmodell över området. Därefter gjordes fältstudier till tre stycken områden med osäkra områdesgränser, vilka framkom av ovan nämnda analyser. Med hjälp av flödesriktningsinstrument och okulär besiktning kunde gränserna då fastställas. Även fältstudier av geomorfologiskt intresse har utförts, såsom studie av ändmoräner och hällar.

    Med hjälp av genomförda fältstudier, analyser, digitalisering och litteraturgranskning har gränserna för Kungsbäckens avrinningsområde bestämts samt beräknats till en area av 105,4 km2. Områdets geomorfologiska kartläggning har resulterat i en karta där de olika förekomsterna finns redovisade (se bilaga 1, karta i A3-format). Förutom detta finns olika begrepp och naturfenomen beskrivna i rapporten samt nyttan med denna typ av studie.

  • 41.
    Yao, Xiaobai Angela
    et al.
    Department of Geography, University of Georgia, Athens, USA.
    Huang, Haosheng
    Department of Geography, Universitat Zurich Institut fur Geographie, Zurich, Switzerland.
    Jiang, Bin
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, Samhällsbyggnad, GIS.
    Krisp, Jukka M.
    University of Augsburg, Augsburg, Germany.
    Representation and analytical models for location-based big data2019Ingår i: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 33, nr 4, s. 707-713Artikel i tidskrift (Refereegranskat)
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