Sökning: "derivation"
Visar resultat 21 - 25 av 271 avhandlingar innehållade ordet derivation.
21. Shape optimization in compressible inviscid flow
Sammanfattning : This thesis describes methods for aerodynamic optimization, including a new derivation of an adjoint method for efficient computation and regularization of the gradient. Also, a general method using different surface parameterizations is presented. LÄS MER
22. Noncommutative Riemannian Geometry of Twisted Derivations
Sammanfattning : A twisted derivation is a generalized derivative satisfying a twisted version of the ordinary Leibniz rule for products. In particular, a (σ, τ )-derivation on an algebra A, is a derivation where Leibniz rule is twisted by two endomorphisms σ and τ on A. LÄS MER
23. Human induced pluripotent stem cells in regenerative medicine
Sammanfattning : Human induced pluripotent (iPS) cells offer a theoretically inexhaustible cell source for the derivation of any cell type and are a promising tool in regenerative medicine. Cells can be derived from the recipients own tissue or from pre-selected HLA-matched donors. LÄS MER
24. A Panel Method for Supersonic Flow
Sammanfattning : Supersonic airflow is usually described by a nonlinear hyperbolic system of equations. In this thesis we consider an aircraft represented by a union of thin plates orthogonal to the direction of Right, and describe the derivation of an approximate linear model for the airflow around it. The linear model is reduced to a system of integral equations. LÄS MER
25. Homogenization of reaction-diffusion problems with nonlinear drift in thin structures
Sammanfattning : We study the question of periodic homogenization of a variably scaled reaction-diffusion equation with non-linear drift of polynomial type. The non-linear drift was derived as hydrodynamic limit of a totally asymmetric simple exclusion process (TASEP) for a population of interacting particles crossing a domain with obstacle. LÄS MER