Sökning: "MATHEMATICS Applied mathematics Numerical analysis"

Visar resultat 21 - 25 av 104 avhandlingar innehållade orden MATHEMATICS Applied mathematics Numerical analysis.

1. 21. Computational modelling of structural battery composites

   Författare :David Carlstedt; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite Element Analysis FEA ; Multifunctional materials; Carbon fibre composites; Thermo-electro-chemo-mechanical coupling; Li-ion batteries;

   Sammanfattning : Batteries and surrounding structures (e.g. battery modules and packs) in electrical vehicles and devices are often designed in a way that prevents the electro-chemically active part of the battery cells from being exposed to mechanical loads during operation/service. LÄS MER

3. 22. Some theoretical, numerical and technical aspects of the homogenization theory

   Författare :Stein A. Berggren; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

   Sammanfattning : This thesis in applied mathematics is devoted to some theoretical, numerical and technical aspects of the homogenization theory, and has obviously been deeply influented by interactions between mathematicians with knowledge in homogenization theory, scientists in composite engineering and the industry. It contains a number of theoretical, numerical and technical aspects of the homogenization theory and its applications. LÄS MER

4. 23. Model Order Reduction with Rational Krylov Methods

   Författare :K. Henrik A. Olsson; Axel Ruhe; Volker Mehrmann; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Model order reduction; dual rational Arnoldi; rational Krylov; moment matching; eigenvalue computation; stability analysis; heat exchanger model; Numerical analysis; Numerisk analys;

   Sammanfattning : Rational Krylov methods for model order reduction are studied. A dual rational Arnoldi method for model order reduction and a rational Krylov method for model order reduction and eigenvalue computation have been implemented. It is shown how to deflate redundant or unwanted vectors and how to obtain moment matching. LÄS MER

5. 24. Energy-conservative finite element methods for nonlinear Schrödinger equations

   Författare :Johan Wärnegård; Patrick Henning; Xavier Antoine; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics; Numerical Analysis; Numerisk analys;

   Sammanfattning : This thesis is devoted to numerical methods for nonlinear Schrödingerequations (NLSEs). These equations have applications in a variety offields such as optics, fluid dynamics, solid-state physics and, of course,quantum mechanics. Notably, the cubic NLSE describes the dynamics of Bose-Einstein condensates. LÄS MER

7. 25. Proportionalitetsbegreppet i den svenska gymnasiematematiken : en studie om läromedel och nationella prov

   Författare :V. L. Anna Lundberg; Christer Bergsten; Kirsti Hemmi; Astrid Pettersson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proportion; upper secondary school; textbooks; national course tests; curriculum; ATD; The anthropological theory of the didactics; missing value; numerical comparison; Qualitative prediction and comparison; Proportionalitets begreppet; proportionalitet; Matematik A; gymnasiet; läromedel; nationella prov; läroplaner; Lpf 94; ATD; reguladetri; saknat värde; missing value; numerical comparison; Qualitative prediction and comparison; Applied mathematics; Tillämpad matematik;

   Sammanfattning : Proportionalitet är ett centralt begrepp i skolmatematiken. Begreppet introduceras i de lägre stadierna och återkommer i så gott som samtliga kurser från årskurs 9 tillsista kursen på gymnasiet. Det övergripande syftet med denna studie är att undersöka hur det matematiska begreppet proportionalitet hanteras i den svenska gymnasieskolan. LÄS MER