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Sökning: FÖRF:(Anders Lundström)

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  • [1]234567...9Nästa
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1.
  • Simbelis, Vygandas, et al. (författare)
  • Synesthetic experience in STRATI C
  • 2018
  • Ingår i: TEI 2018 - Proceedings of the 12th International Conference on Tangible, Embedded, and Embodied Interaction. - Association for Computing Machinery (ACM). - 9781450355681 ; s. 574-580
  • Konferensbidrag (refereegranskat)abstract
    • How do we humanize digital interactive technology? One way is through our experience with technology. With S T R A T I C we present several post-digital concepts to discuss the relationship of the digital in regard to our human lives. We emphasize the synesthetic experience along with other aesthetic experiences and materiality issues with manifestations of the digital in the physical world, tangible approaches to sonic performances, or exposure of internal logics of technological processes. In this paper, we propose both exhibiting our work as an art installation and via a live performance. We regard it as being highly relevant to the topic of the TEI Arts Track exhibition: post-digital materiality at the intersection of the analog and the digital, and to its tangible aspects.
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2.
  • Synesthetic Experience in S T R A T I C
  • 2018
  • Konstnärligt arbete (övrigt vetenskapligt)abstract
    • How do we humanize digital interactive technology? One way is through our experience with technology. With S T R A T I C we present several post-digital concepts to discuss the relationship of the digital in regard to our human lives. We emphasize the synesthetic experience along with other aesthetic experiences and materiality issues with manifestations of the digital in the physical world, tangible approaches to sonic performances, or exposure of internal logics of technological processes.In this paper, we propose both exhibiting our work as an art installation and via a live performance. We regard it as being highly relevant to the topic of the TEI Arts Track exhibition: post-digital materiality at the intersection of the analog and the digital, and to its tangible aspects. 
3.
  • Gustavsson, Leif, 1954-, et al. (författare)
  • Climate change effects of forestry and substitution of carbon-intensive materials and fossil fuels
  • 2017
  • Ingår i: Renewable & sustainable energy reviews. - Elsevier. - 1364-0321. ; 67, s. 612-624
  • Tidskriftsartikel (refereegranskat)abstract
    • We estimate the climate effects of directing forest management in Sweden towards increased carbon storage in forests with more land set-aside for protection, or towards increased forest production for the substitution of carbon-intensive materials and fossil fuels, relative to a reference case of current forest management. We develop various scenarios of forest management and biomass use to estimate the carbon balances of the forest systems, including ecological and technological components, and their impacts on the climate in terms of radiative forcing. The scenario with increased set-aside area and the current level of forest residue harvest resulted in lower cumulative carbon emissions compared to the reference case for the first 90 years, but then showed higher emissions as reduced forest harvest led to higher carbon emissions from energy and material systems. For the reference case of current forest management, increased harvest of forest residues gave increased climate benefits. The most climatically beneficial alternative, expressed as reduced cumulative radiative forcing, in both the short and long terms is a strategy aimed at high forest production, high residue recovery rate, and high efficiency utilization of harvested biomass. Active forest management with high harvest levels and efficient forest product utilization will provide more climate benefit, compared to reducing harvest and storing more carbon in the forest.
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4.
  • Gustavsson, Leif, et al. (författare)
  • Climate change effects of forestry and substitution of carbon-intensive materials and fossil fuels
  • 2017
  • Ingår i: Renewable and Sustainable Energy Reviews. - Elsevier. - 1364-0321. ; 67, s. 612-624
  • Forskningsöversikt (refereegranskat)abstract
    • We estimate the climate effects of directing forest management in Sweden towards increased carbon storage in forests with more land set-aside for protection, or towards increased forest production for the substitution of carbon-intensive materials and fossil fuels, relative to a reference case of current forest management. We develop various scenarios of forest management and biomass use to estimate the carbon balances of the forest systems, including ecological and technological components, and their impacts on the climate in terms of radiative forcing. The scenario with increased set-aside area and the current level of forest residue harvest resulted in lower cumulative carbon emissions compared to the reference case for the first 90 years, but then showed higher emissions as reduced forest harvest led to higher carbon emissions from energy and material systems. For the reference case of current forest management, increased harvest of forest residues gave increased climate benefits. The most climatically beneficial alternative, expressed as reduced cumulative radiative forcing, in both the short and long terms is a strategy aimed at high forest production, high residue recovery rate, and high efficiency utilization of harvested biomass. Active forest management with high harvest levels and efficient forest product utilization will provide more climate benefit, compared to reducing harvest and storing more carbon in the forest.
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5.
  • Lundström, Anders, 1981-, et al. (författare)
  • Developing a framework for evaluating the sustainability of computing projects
  • 2017
  • Ingår i: LIMITS 2017 - Proceedings of the 2017 Workshop on Computing Within Limits. - Association for Computing Machinery, Inc. - 9781450349505 ; s. 111-117
  • Konferensbidrag (refereegranskat)abstract
    • Toyama [19] has proposed a "preliminary taxonomy" for classifying computing projects as a way of separating sustainable computing efforts from unsustainable ones. In this paper we explore the feasibility of Toyama's taxonomy. We begin by describing how we revised and developed his taxonomy to make it more practically useful and then conducted a pilot study where we used the revised version to evaluate four computing projects. The pilot study was then used as a foundation for further discussing and developing the revised taxonomy into yet another, third and final version which we have chosen to call the Sustainable Computing Evaluation Framework (SCEF). While our proposed framework (SCEF) is more practically useful than Toyama's "preliminary taxonomy", there are still challenges that need to be addressed and we end the paper by suggesting where future efforts could be focused.
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6.
  • Mair, Louise, et al. (författare)
  • Evaluating citizen science data for forecasting species responses to national forest management
  • 2017
  • Ingår i: Ecology and evolution. - 2045-7758. ; 7:1, s. 368-378
  • Tidskriftsartikel (refereegranskat)abstract
    • The extensive spatial and temporal coverage of many citizen science datasets (CSD) makes them appealing for use in species distribution modeling and forecasting. However, a frequent limitation is the inability to validate results. Here, we aim to assess the reliability of CSD for forecasting species occurrence in response to national forest management projections (representing 160,366km2) by comparison against forecasts from a model based on systematically collected colonization-extinction data. We fitted species distribution models using citizen science observations of an old-forest indicator fungus Phellinus ferrugineofuscus. We applied five modeling approaches (generalized linear model, Poisson process model, Bayesian occupancy model, and two MaxEnt models). Models were used to forecast changes in occurrence in response to national forest management for 2020-2110. Forecasts of species occurrence from models based on CSD were congruent with forecasts made using the colonization-extinction model based on systematically collected data, although different modeling methods indicated different levels of change. All models projected increased occurrence in set-aside forest from 2020 to 2110: the projected increase varied between 125% and 195% among models based on CSD, in comparison with an increase of 129% according to the colonization-extinction model. All but one model based on CSD projected a decline in production forest, which varied between 11% and 49%, compared to a decline of 41% using the colonization-extinction model. All models thus highlighted the importance of protected old forest for P.ferrugineofuscus persistence. We conclude that models based on CSD can reproduce forecasts from models based on systematically collected colonization-extinction data and so lead to the same forest management conclusions. Our results show that the use of a suite of models allows CSD to be reliably applied to land management and conservation decision making, demonstrating that widely available CSD can be a valuable forecasting resource.
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7.
  • Barreiro, Susana, et al. (författare)
  • Overview of methods and tools for evaluating future woody biomass availability in European countries
  • 2016
  • Ingår i: Annals Of Forest Science. - 1286-4560 .- 1297-966X. ; 73:4, s. 823-837
  • Forskningsöversikt (refereegranskat)abstract
    • This analysis of the tools and methods currently in use for reporting woody biomass availability in 21 European countries has shown that most countries use, or are developing, National Forest Inventory-oriented models whereas the others use standwise forest inventory--oriented methods.Knowledge of realistic and sustainable wood availability in Europe is highly relevant to define climate change mitigation strategies at national and European level, to support the development of realistic targets for increased use of renewable energy sources and of industry wood. Future scenarios at European level highlight a deficit of domestic wood supply compared to wood consumption, and some European countries state they are harvesting above the increment.Several country-level studies on wood availability have been performed for international reporting. However, it remains essential to improve the knowledge on the projection methods used across Europe to better evaluate forecasts.Analysis was based on descriptions supplied by the national correspondentsinvolved in USEWOOD COST Action (FP1001), and further enriched with additionaldata from international reports that allowedcharacterisation of the forests in these countries for the same base year.Methods currently used for projecting wood availability were described for 21 European countries. Projection systems based on National Forest Inventory (NFI) data prevail over methods based on forest management plans. Only a few countries lack nationwide projection tools, still using tools developed for specific areas.A wide range of NFI-based systems for projecting wood availability exists, being under permanent improvement. The validation of projection forecasts and the inclusion of climate sensitive growth models into these tools are common aims for most countries. Cooperation among countries would result in higher efficiency when developing and improving projection tools and better comparability among them.
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8.
  • Lundström, Anders, 1981- (författare)
  • Designing Energy-Sensitive Interactions Conceptualising Energy from the Perspective of Electric Cars
  • 2016
  • Doktorsavhandling (övrigt vetenskapligt)abstract
    • I takt med att vi använder alltmer teknik i mobila sammanhang blir energi- och batterihantering en allt större del av vår vardag. Många har erfarenheter av de besvär som ett plötsligt urladdat batteri i en mobiltelefon, laptop eller elbil kan orsaka. En central fråga för att uppnå bättre användarupplevelser är hur vi kan förstå och arbeta med energi som en faktor i design av interaktion med mobil teknik.Genom designdriven forskning har jag arbetat specifikt med interaktionen i elbilar, en situation där många brottas med just hantering och förståelse av begränsad energi. En specifik utmaning i denna kontext är den misstro som många upplever kring existerande system för räckviddsberäkning. Genom skisser, prototyper och användarstudier har jag undersökt orsaker och praktiska lösningar på detta problem. Min slutsats är att bilens gränssnitt bör exponera den inre logik som beräkningarna bygger på, så att föraren förstår hur egna handlingar, såsom körsätt och användning av t ex kupévärmare, påverkar energiförbrukning och räckvidd. Detta leder till ökad upplevelse av kontroll för föraren, och samtidigt till mer tillförlitliga beräkningar då det tar hänsyn till variabler som inte kan förutsägas automatiskt.I arbetet har dynamiska aspekter av energi framträtt som centralt i användning av interaktiva system. Detta pekar på behovet av att designa energikänsliga interaktioner, som hjälper användaren att förstå balansen mellan energiåtgång och bruksvärde. För att stödja design av energikänsliga interaktioner artikuleras tre kategorier av energianvändning i interaktiva system. Dessa är exergi (behövs för att uppnå tänkt interaktion), intergi (kontrollerbar och föränderlig över tid och användning, måste adresseras med design), och anergi (är alltid ett slöseri som behöver reduceras). Denna artikulation belyser specifikt de aspekter av energiförbrukningen som varierar genom användning, och som skulle kunna exponeras för mer energieffektiv interaktion med ny teknik. 
9.
  • Nordström, Eva-Maria, et al. (författare)
  • Impacts of global climate change mitigation scenarios on forests and harvesting in Sweden
  • 2016
  • Ingår i: Canadian Journal of Forest Research. - 0045-5067. ; 46:12, s. 1427-1438
  • Tidskriftsartikel (refereegranskat)abstract
    • Under climate change, the importance of biomass resources is likely to increase and new approaches are needed to analyze future material and energy use of biomass globally and locally. Using Sweden as an example, we present an approach that combines global and national land-use and forest models to analyze impacts of climate change mitigation ambitions on forest management and harvesting in a specific country. National forest impact analyses in Sweden have traditionally focused on supply potential with little reference to international market developments. In this study, we use the global greenhouse gas concentration scenarios from the Intergovernmental Panel for Climate Change to estimate global biomass demand and assess potential implications on harvesting and biodiversity in Sweden. The results show that the short-term demand for wood is close to the full harvesting potential in Sweden in all scenarios. Under high bioenergy demand, harvest levels are projected to stay high over a longer time and particularly impact the harvest levels of pulpwood. The area of old forest in the managed landscape may decrease. This study highlights the importance of global scenarios when discussing national-level analysis and pinpoints trade-offs that policy making in Sweden may need to tackle in the near future.
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10.
  • Nordström, Eva-Maria, et al. (författare)
  • Impacts of global climate change mitigation scenarios on forests and harvesting in Sweden
  • 2016
  • Annan publikation (refereegranskat)abstract
    • Under climate change, the importance of biomass resources is likely to increase and new approaches are needed to analyze future material and energy use of biomass globally and locally. Using Sweden as an example, we present an approach that combines global and national land-use and forest models to analyze impacts of climate change mitigation ambitions on forest management and harvesting in a specific country. National forest impact analyses in Sweden have traditionally focused on supply potential with little reference to international market developments. In this study, we use the global greenhouse gas concentration scenarios from the Intergovernmental Panel for Climate Change to estimate global biomass demand and assess potential implications on harvesting and biodiversity in Sweden. The results show that the short-term demand for wood is close to the full harvesting potential in Sweden in all scenarios. Under high bioenergy demand, harvest levels are projected to stay high over a longer time and particularly impact the harvest levels of pulpwood. The area of old forest in the managed landscape may decrease. This study highlights the importance of global scenarios when discussing national-level analysis and pinpoints trade-offs that policy making in Sweden may need to tackle in the near future.
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