Search for dissertations about: "energy conservation problems"

Showing result 1 - 5 of 21 swedish dissertations containing the words energy conservation problems.

  2. 1. Positive Persuasion - Designing enjoyable energy feedback experiences in the home

    Author : Anton Gustafsson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Energy conservation; energy awareness; persuasive technology; sustainable HCI; ambient displays; pervasive games; serious games; engaging interaction; design; energy;

    Abstract : The world currently faces huge challenges in terms of our excessive use of energy. Energy conservation – a topic that has been on the agenda since the energy crisis in the 1970s – has for this reason once again become a very central issue in our society. READ MORE

  4. 2. PV water pumping systems for grassland and farmland conservation

    Author : Pietro Elia Campana; Jinyue Yan; Bengt Perers; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

    Abstract : Grassland degradation is considered as one of the worst environmental and economic problems in China because of the negative impacts on water and food security. The application of the photovoltaic water pumping (PVWP) technology for irrigation is an innovative and sustainable solution to curb the progress of grassland desertification and to promote the conservation of farmland in remote areas. READ MORE

  5. 3. High order summation-by-parts methods in time and space

    Author : Tomas Lundquist; Jan Nordström; Peter Eliasson; David A. Kopriva; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; summation-by-parts; time integration; stiff problems; weak initial conditions; high order methods; simultaneous-approximation-term; finite difference; discontinuous Galerkin; spectral methods; conservation; energy stability; complex geometries; non-conforming grid interfaces; interpolation;

    Abstract : This thesis develops the methodology for solving initial boundary value problems with the use of summation-by-parts discretizations. The combination of high orders of accuracy and a systematic approach to construct provably stable boundary and interface procedures makes this methodology especially suitable for scientific computations with high demands on efficiency and robustness. READ MORE

  6. 4. Energy and economic growth in Sweden : an analysis of historical trends and present choices

    Author : Lars Bergman; Handelshögskolan i Stockholm; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : From chapter 1: The plan of the study is as follows. The post-war development of Sweden’s energy consumption is described and analyzed in Chapter 2. The discussion is focused on the relation between Sweden’s GNP and her consumption of energy, that is, the energy intensity of Sweden’s GNP. READ MORE

  7. 5. Numerical ice sheet modeling : Forward and inverse problems

    Author : Gong Cheng; Lina von Sydow; Per Lötstedt; Nina Kirchner; Irina Tezaur; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ice sheet modeling; finite element method; grounding line migration; inverse problems; adjoint method; Scientific Computing; Beräkningsvetenskap;

    Abstract : Ice sheets have strong influence on the climate system. Numerical simulation provides a mathematical tool to study the ice dynamics in the past and to predict their contribution to climate change in the future. Large scale ice sheets behave as incompressible non-Newtonian fluid. READ MORE