Sökning: "energikonsumtion"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet energikonsumtion.

  1. 1. Centralized Routing for Prolonged Network Lifetime in Wireless Sensor Networks

    Författare :Ewa Hansen; Mats Björkman; Mikael Nolin; Dag Nyström; Thiemo Voigt; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wireless sensor networks; routing; energy efficiency; asymmetric communicaiton; communication; power consumption; computer networks; trådlösa sensornät; trådlös; kommunikation; energikonsumtion; Computer science; Datavetenskap; Computer Science; datavetenskap;

    Sammanfattning : In this thesis centralized routing methods for wireless sensor networks have been studied. The aim has been to prolong network lifetime by reducing the energy consumed by sensor-node communication.Wireless sensor networks are rapidly becoming common in application areas where information from many sensors is to be collected and acted upon. LÄS MER

  3. 2. Att elda för kråkorna? : hushållens energianvändning inom bostadssektorn i Sverige 1913-2008

    Författare :Mikael Levin; Magnus Lindmark; Ann-Kristin Bergquist; Astrid Kander; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economic History; households; energy consumption; consumption patterns; housing; housing and energy policy; carbon dioxide emissions; Ekonomisk historia; hushåll; energikonsumtion; konsumtionsmönster; hushåll och energipolitik; koldioxidutsläpp; ekonomisk historia; Economic History;

    Sammanfattning : This thesis investigates the development of the long-term energy consumption in the Swedish households by estimating the sector’s total energy use and moreover, by examining how structural, institutional and economic factors have affected the demand for energy in the residential sector during the period 1913-2008. The investigated period covers a transition from traditional fuels, such as firewood, to fossil fuels and finally renewable energy. LÄS MER

  4. 3. Performance Monitoring, Analysis, and Real-Time Introspection on Large-Scale Parallel Systems

    Författare :Xavier Aguilar; Erwin Professor; Karl Doctor; Jens Professor; Jesus Labarta; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HPC; performance analysis; performance monitoring; performance introspection; parallel computing; Computer Science; Datalogi;

    Sammanfattning : High-Performance Computing (HPC) has become an important scientific driver. A wide variety of research ranging for example from drug design to climate modelling is nowadays performed in HPC systems. Furthermore, the tremendous computer power of such HPC systems allows scientists to simulate problems that were unimaginable a few years ago. LÄS MER

  5. 4. Tools for Evaluating Energy Efficiency of Steel Production : Lessons from Sweden and Europe

    Författare :Johannes Morfeldt; Semida Silveira; Mats Söderström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy efficiency; indicators; iron and steel sector; systems analysis; energieffektivitet; indikatorer; järn- och stålsektorn; systemanalys; Energy Technology; Energiteknik;

    Sammanfattning : The European Union faces challenges related to climate change, security of energy supply, and competitiveness of European industries. Energy efficiency indicators are required for monitoring and controlling the effectiveness of policies such as the recently endorsed Energy Efficiency Directive. LÄS MER

  7. 5. A Negative Footprint Illusion in Environmental Impact Estimates

    Författare :Mattias Holmgren; Patrik Sörqvist; Ola Eriksson; Maria Ojala; Högskolan i Gävle; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; The negative footprint illusion; averaging bias; environmental impact estimates; decision-making; climate change; Den negativa fotavtryckillusionen; genomsnittsprocess; miljöpåverkan; beslutsfattande; klimatförändringarna; inget Strategiskt forskningsområde SFO ; no Strategic Research Area SFO ;

    Sammanfattning : A major part of anthropogenic climate change is due to everyday human behavior, such as transportation, food and energy consumption. As a result, it has been argued that many barriers for mitigating climate change are psychological in nature. LÄS MER