Search for dissertations about: "large density"

Showing result 1 - 5 of 1231 swedish dissertations containing the words large density.

  2. 1. van der Waals Density Functionals

    Author : Ylva Andersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; van der Waals molecules; physisorption; van der Waals interactions; density-functional theory; exchange-correlation energy; scanning-force microscopy; adhesion;

    Abstract : Methods using local or semi local approximations (LDA, GGA etc.) for the exchange-correlation energy in the density-functional theory (DFT) do not include van der Waals interactions. READ MORE

  4. 2. Quantum Chemistry for Large Systems

    Author : Elias Rudberg; Pawel Salek; Christian Ochsenfeld; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum chemistry; fast multipole method; density matrix purification; sparse matrices; Theoretical chemistry; Teoretisk kemi;

    Abstract : This thesis deals with quantum chemistry methods for large systems. In particular, the thesis focuses on the efficient construction of the Coulomb and exchange matrices which are important parts of the Fock matrix in Hartree-Fock calculations. READ MORE

  5. 3. Cluster investigations of the extent and altitude distribution of the auroral density cavity

    Author : Love Alm; Göran T. Marklund; Tomas Karlsson; Rickard Lundin; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Auroral density cavity; auroral accelaration; Cluster; in situ observation; electron density; pseudo altitude; Physics; Fysik;

    Abstract : The auroral density cavity constitutes the boundary between the cold, dense ionospheric plasma and the hot, tenuous plasma sheet plasma. The auroral density cavity is characterized by low electron density and particle populations modified by parallel electric fields. READ MORE

  6. 4. Bayesian Inference in Large Data Problems

    Author : Matias Quiroz; Mattias Villani; Bani K. Mallick; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bayesian inference; Large data sets; Markov chain Monte Carlo; Survey sampling; Pseudo-marginal MCMC; Delayed acceptance MCMC; Statistics; statistik;

    Abstract : In the last decade or so, there has been a dramatic increase in storage facilities and the possibility of processing huge amounts of data. This has made large high-quality data sets widely accessible for practitioners. This technology innovation seriously challenges traditional modeling and inference methodology. READ MORE

  7. 5. Large Eddy Simulation of Atomizing Sprays

    Author : Holger Grosshans; Strömningsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atomization; Multiphase Flows; Jets; Sprays; Large Eddy Simulation;

    Abstract : Liquid-gas two-phase flows occur frequently in daily life, in nature e.g. falling rain drops or waves in the sea, and in industrial applications, e.g. READ MORE