Search for dissertations about: "Daniele"

Showing result 1 - 5 of 25 swedish dissertations containing the word Daniele.

  2. 1. Non-Convex Methods for Compressed Sensing and Low-Rank Matrix Problems

    Author : Daniele Gerosa; Matematik (naturvetenskapliga fakulteten); []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; compressed sensing; Low-rank Approximation; phase retrieval; Non-convex optimization;

    Abstract : In this thesis we study functionals of the type \( \mathcal{K}_{f,A,\b}(\x)= \mathcal{Q}(f)(\x) + \|A\x - \b \| ^2 \), where \(A\) is a linear map, \(\b\) a measurements vector and \( \mathcal{Q} \) is a functional transform called \emph{quadratic envelope}; this object is a very close relative of the \emph{Lasry-Lions envelope} and its use is meant to regularize the functionals \(f\). Carlsson and Olsson investigated in earlier works the connections between the functionals \( \mathcal{K}_{f,A,\b}\) and their unregularized counterparts \(f(\x) + \|A\x - \b \| ^2 \). READ MORE

  4. 2. Prediction of groundwater flows into underground conctructions in hard rocks

    Author : Daniele Cesano; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  5. 3. Water leakage into underground construction in fractured rocks

    Author : Daniele Cesano; KTH; []
    Keywords : hard rock; fracture; heterogeneity; underground constructions; leakage; prediction;

    Abstract : .... READ MORE

  6. 4. Space-adaptive simulation of transition and turbulence in shear flows

    Author : Daniele Massaro; Philipp Schlatter; Saleh Rezaeiravesh; Alfredo Pinelli; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; global stability; coherent structures; adaptive mesh refinement; Turbulens; global stabilitet; koherenta strukturer; adaptiv nätförfining; Teknisk mekanik; Engineering Mechanics;

    Abstract : Transitional and turbulent shear flows are ubiquitous, from the boundary layer developing on an aeroplane wing to the flow within the aortic arch. In this thesis, we study wall-bounded and free shear flows through direct numerical simulations. READ MORE

  7. 5. Healing of marginal defects around implants

    Author : Daniele Botticelli; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The purpose of the present series of investigations was to study the healing of marginal defects around implants. The hard-tissue alterations following immediate implant placement in extrac-tion sites were analyzed in 18 patients (study I). READ MORE