Search for dissertations about: "congruence transformation"

Showing result 1 - 5 of 7 swedish dissertations containing the words congruence transformation.

2. 1. Information Technology Alignment in Public Organisations : Towards Successful Digital Transformation

   Author : Gideon Mekonnen Jonathan; Lazar Rusu; Erik Perjons; Björn Johansson; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Digital Transformation; IT Alignment; Organisational Structure; Public Organisations; Public Value; data- och systemvetenskap; Computer and Systems Sciences;

   Abstract : The widespread acceptance of digital transformation has brought the topic to the top of researchers’ and practitioners’ agendas. However, despite the anticipated benefits and opportunities, evidence suggests that many organisations still struggle to realise the results of successful digital transformation. READ MORE

4. 2. Matrix Algebra for Quantum Chemistry

   Author : Emanuel H. Rubensson; Pawel Salek; Stefan Goedecker; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; linear scaling; reduced complexity; electronic structure; density functional theory; Hartree-Fock; density matrix purification; congruence transformation; inverse factorization; eigenvalues; eigenvectors; numerical linear algebra; occupied subspace; canonical angles; invariant subspace; Theoretical chemistry; Teoretisk kemi;

   Abstract : This thesis concerns methods of reduced complexity for electronic structure calculations.  When quantum chemistry methods are applied to large systems, it is important to optimally use computer resources and only store data and perform operations that contribute to the overall accuracy. READ MORE

5. 3. Skew-symmetric matrix pencils : stratification theory and tools

   Author : Andrii Dmytryshyn; Bo Kågström; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Investigating the properties, explaining, and predicting the behaviour of a physical system described by a system (matrix) pencil often require the understanding of how canonical structure information of the system pencil may change, e.g., how eigenvalues coalesce or split apart, due to perturbations in the matrix pencil elements. READ MORE

6. 4. Gravity Illustrated. Spacetime Edition

   Author : Rickard Jonsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; embeddings; pedagogical techniques; curved spacetime; optical geometry; gyroscope precession; inertial forces;

   Abstract : This thesis deals with essentially four different topics within general relativity: pedagogical techniques for illustrating curved spacetime, inertial forces, gyroscope precession and optical geometry. Concerning the pedagogical techniques, I investigate two distinctly different methods, the dual and the absolute method. READ MORE

7. 5. The Relation Between Digital Technology and Values : Thinking Through Multiple Technologies

   Author : Leif Sundberg; Katarina L Gidlund; Aron Larsson; Jeremy Rose; Mittuniversitetet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; digitalization; digital government; technique; technics; technology; philosophy of technology; paradigms; megamachines; polytechnics; monotechnics;

   Abstract : This thesis addresses two topics: technology and values. More specifically, the studied technology is an ensemble of digital technologies that is often referred to as “digitalization,” and the values are gathered from empirical material from the Swedish (digital) government. READ MORE