Essays about: "Arvid Forsberg"

Found 2 essays containing the words Arvid Forsberg.

1. 1. Nonlinear Methods of Aerodynamic Data-driven Reduced Order Modeling

   University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

   Author : Arvid Forsberg; [2022]
   Keywords : machine learning; aerodynamics; autoencoder; kernel transformation; principal component analysis; nonlinear; regression; modeling; surrogate model; reduced order modeling; neural network;

   Abstract : Being able to accurately approximate outputs of computationally expensive simulations for arbitrary input parameters, also called missing points estimation, is central in many different areas of research and development with applications ranging from uncertainty propagation to control system design to name a few. This project investigates the potential of kernel transformations and nonlinear autoencoders as methods of improving the accuracy of the proper orthogonal decomposition method combined with regression. READ MORE

3. 2. Reducing the dynamical diffraction effects in EMCD by electron beam precession

   University essay from

   Author : Arvid Forsberg; [2020]
   Keywords : electron microscope; TEM; transmission electron microscope; EMCD; electron energy-loss magnetic chiral dichroism; magnetism; precession electron diffraction; crystals; crystallography;

   Abstract : Dynamical effects are known to reduce the signal to noise ratio in EMCD measurements making them highly dependent on sample thickness. Precession of the electron beam has been shown to reduce these effects in ordinary crystallography. READ MORE