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Visar resultat 21 - 25 av 1073 avhandlingar innehållade ordet dérive.
21. Regulatory Factors that Reveal Three Distinct Adipocytes : The Brown, the White and the Brite
Sammanfattning : Adipose tissues have long been considered to derive from a common origin. Even the functionally different brown and white adipose tissues were generalized to share a common origin. Brown adipose tissue is a highly innervated and vascularised tissue containing multilocular and multimitochondrial brown adipocytes. LÄS MER
22. On finite element schemes for Vlasov-Maxwell system and Schrödinger equation
Sammanfattning : This thesis treats finite element schemes for two kind of problems, the Valsov-Maxwellsystem and the nonlinear Schrödinger equation. We study streamline diffusion schemes applied for numerical solution of the one and one-half dimensional relativistic Vlasov-Maxwell system. The study is made both in a priori and a posteriori settings. LÄS MER
23. Some concatenated and iterative decoding approaches for continuous phase modulation
Sammanfattning : Several concatenated and iterative decoding approaches are used toimprove the power efficiency of continuous phase modulation (CPM).First a symbol interleaver is used for serially concatenated CPM(SCCPM). Convergence of iterative decoding for this scheme can beearlier (lower SNR: Signal-to-Noise-Ratio) compared to bitinterleaved SCCPM. LÄS MER
24. Statistical Methods in Portfolio Theory
Sammanfattning : In this thesis we develop new statistical theory and apply it to practical problems dealing with mean-variance optimal portfolio selection. More precisely, we derive an exact statistical test for the characterization of the location of the tangency portfolio (TP) on the efficient frontier. LÄS MER
25. Stable High-Order Finite Difference Methods for Aerodynamics
Sammanfattning : In this thesis, the numerical solution of time-dependent partial differential equations (PDE) is studied. In particular high-order finite difference methods on Summation-by-parts (SBP) form are analysed and applied to model problems as well as the PDEs governing aerodynamics. LÄS MER