Sökning: "hans karlsson"

Visar resultat 16 - 20 av 25 avhandlingar innehållade orden hans karlsson.

  1. 16. Numerical Methods for Wave Propagation : Analysis and Applications in Quantum Dynamics

    Författare :Emil Kieri; Sverker Holmgren; Vasile Gradinaru; Hans O. Karlsson; Tobias Jahnke; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; computational wave propagation; quantum dynamics; time-dependent Schrödinger equation; spectral methods; Gaussian beams; splitting methods; low-rank approximation; Scientific Computing; Beräkningsvetenskap;

    Sammanfattning : We study numerical methods for time-dependent partial differential equations describing wave propagation, primarily applied to problems in quantum dynamics governed by the time-dependent Schrödinger equation (TDSE). We consider both methods for spatial approximation and for time stepping. LÄS MER

  3. 17. Efficient and Reliable Simulation of Quantum Molecular Dynamics

    Författare :Katharina Kormann; Sverker Holmgren; Gunilla Kreiss; Hans O. Karlsson; Christian Lubich; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; time-dependent Schrödinger equation; quantum optimal control; exponential integrators; spectral elements; radial basis functions; global error control and adaptivity; high-performance computing implementation; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : The time-dependent Schrödinger equation (TDSE) models the quantum nature of molecular processes.  Numerical simulations based on the TDSE help in understanding and predicting the outcome of chemical reactions. LÄS MER

  4. 18. Towards Effortless Use of Information Technology in Home Healthcare with a Networked Digital Pen

    Författare :Leili Lind; Hans Åhlfeldt; Daniel Karlsson; Bengt Fridlund; Sabine Koch; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Home care services; Hospital-based; Requirements; Pain Assessment; Visual Analogue Scale; Palliative care; Digital pens; Mobile phones; Internet; Medical informatics; Medicinsk informatik;

    Sammanfattning : When care is moved from the hospital to the home the demands for high quality care still remain. For problems arising from the geographical separation of patients and professional caregivers, information and communication technology may offer important solutions. LÄS MER

  5. 19. Political Representation in the European Union : A Multi-Channel Approach

    Författare :Moa Mårtensson; Christer Karlsson; Sverker Gustavsson; Torsten Svensson; Hans Agné; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; political representation; EU; multi-channel approach; European Parliament; Council of Ministers; interest representation; linkage; Services Directive; social-network analysis; coordination; Statskunskap; Political Science;

    Sammanfattning : The European Union (EU) is the most far-reaching attempt yet undertaken to institutionalize democratic policy-making beyond the nation-state. To what extent, and in what ways, do various channels of representation contribute towards the realization of this aim? This dissertation takes stock of current research on the EU’s system of representation, and seeks to expand its agenda so that this central question can be properly addressed. LÄS MER

  7. 20. Electromechanics of Vertical Axis Wind Turbines

    Författare :Morgan Rossander; Sandra Eriksson; Hans Bernhoff; Daniel Karlsson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind power; Diode rectification; Control; Measurement; Simulation; Electromechanical coupling; vindkraft; diodlikriktning; reglering; mätning; simulering; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Wind power is an established mean of clean energy production and the modern horizontal axis wind turbine has become a common sight. The need for maintenance is high and future wind turbines may need to be improved to enable more remote and offshore locations. LÄS MER