Sökning: "technological trends"

Visar resultat 1 - 5 av 45 avhandlingar innehållade orden technological trends.

  1. 1. The Specter of Scarcity : Experiencing and Coping with Metal Shortages, 1870-2015

    Författare :Hanna Vikström; Per Högselius; Dag Avango; Fjaestad Maja; Ingulstad Mats; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; scarcity; critical metals; Sweden; small countries; strategic metals; metal shortages; history of technology; experiences of scarcity; coping with shortages; technological trends; World War I; resource crisis; construction of resources.; Historiska studier av teknik; vetenskap och miljö; History of Science; Technology and Environment;

    Sammanfattning : In spite of an ever-growing supply of metals, actors have long feared metal shortages. This thesis – departing from an understanding that metals scarcity is not an objective geological fact, but an experience, a fear of a shortage – explores why business and state actors have experienced metals as scarce and how they coped with scarcity from 1870 to 2015. LÄS MER

  3. 2. Analyzing technological change in low carbon power generation

    Författare :Ulrika Claeson Colpier; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experience curves; technology assessment; endogenous technological change;

    Sammanfattning : In order to mitigate climate change while satisfying the growing global electricity demand, technological change within the power generating system is crucial. New low carbon technologies need to replace the current more carbon-intensive options. LÄS MER

  4. 3. Energy Efficiency Versus Gains in Consumer Amenities

    Författare :Frances Sprei; Chalmers tekniska högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; energy efficiency; residential buildings; service features; Sweden; passenger cars; fuel consumption; downsizing; technological development;

    Sammanfattning : This thesis, consisting of five papers, addresses the question of what share of technological development results in increased energy efficiency rather than offsetting improved consumer services in the form of gains in consumer amenities? In the first paper economic and organizational explanations are given for stagnating energy efficiency trends in the Swedish residential building sector. The results show that changes in energy prices to a large extent explain the observed stagnation. LÄS MER

  5. 4. Motivating External Participation in Marketing Intelligence Foresight

    Författare :Andrew Flostrand; Esmail Salehi-Sangari; Leyland Pitt; Victoria L. Crittenden; Luleå tekniska universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; marketing intelligence; stakeholder engagement; self-determination theory; Delphi technique; crowdsourcing; foresight; motivation; technological forecasting; social forecasting; Industrial Marketing; Industriell marknadsföring;

    Sammanfattning : Long-range planning for purposes of deciding on the development of high investment and long development cycle activities requires that assumptions be made about environmental factors at the time of their future completion. For organizations that serve a market, the future market factors related to supply, demand, and technological developments are at once fundamentally critical and unknowable  with certainty. LÄS MER

  7. 5. Full Cycle Engine Simulations with Detailed Chemistry

    Författare :Adina Gogan; Värmeöverföring; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; plasmas; Gaser; Gases; fluid dynamics; aktuariematematik; programmering; operationsanalys; Statistik; actuarial mathematics; programming; operations research; Statistics; detailed kinetics; emissions; engine knock; autoignition; modeling; spark ignition engine; diesel engine; fluiddynamik; plasma; Technological sciences; Teknik; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; Motors and propulsion systems; Motorer; framdrivningssystem; stochastic reactor model;

    Sammanfattning : The modeling work developed in this thesis can be divided in two main areas of investigations: autoignition related to spark ignition engine and combustion and emissions formation in relation to diesel engines. A first version of a detailed kinetics engine simulation program, extended to handle full cycle calculations, was employed in order to demonstrate the strong effect that nitric oxide from the residual gas has on the autoignition onset. LÄS MER