Search for dissertations about: "algorithms"

Showing result 16 - 20 of 2516 swedish dissertations containing the word algorithms.

  2. 16. Algorithms for Coherent Diffractive Imaging with X-ray Lasers

    Author : Benedikt J. Daurer; Filipe Maia; Tomas Ekeberg; Janos Hajdu; Richard Neutze; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; X-ray lasers; coherent diffractive imaging; algorithms; lensless imaging; flash diffractive imaging; flash X-ray imaging; aerosol injection; FEL; XFEL; CXI; CDI; FXI; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

    Abstract : Coherent diffractive imaging (CDI) has become a very popular technique over the past two decades. CDI is a "lensless" imaging method which replaces the objective lens of a conventional microscope by a computational image reconstruction procedure. READ MORE

  4. 17. Algorithms and Proofs of Concept for Massive MIMO Systems

    Author : Joao Vieira; Kommunikationsteknologi; []
    Keywords : massive MIMO; Algorithms; Testbeds; Deep Learning; Generalized Method of Moments;

    Abstract : This thesis focuses on algorithms and proofs of concepts in the area of wireless systems operating with a large number of antennas, especially at the base station side.The first studied topic concerns the design and implementation of massive multiple-input multiple-output (MIMO) testbeds, primarily for communications. READ MORE

  5. 18. Certifying Correctness for Combinatorial Algorithms : by Using Pseudo-Boolean Reasoning

    Author : Stephan Gocht; Parallella System; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; certifying algorithms; 0-1 linear inequalities; combinatorial algorithms; proof logging;

    Abstract : Over the last decades, dramatic improvements in combinatorialoptimisation algorithms have significantly impacted artificialintelligence, operations research, and other areas. These advances,however, are achieved through highly sophisticated algorithms that aredifficult to verify and prone to implementation errors that can causeincorrect results. READ MORE

  6. 19. Real-Time Algorithms and Intersection Test Methods for Computer Graphics

    Author : Tomas Möller; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; texture; ray tracing; radiosity; color; three-dimensional graphics and realism; virtual reality; algorithms; shadowing; shading;

    Abstract : In real-time computer graphics applications, at least three major forces are in conflict, namely, rendering speed, the level of realism, and interactivity. Therefore this thesis focuses on real-time algorithms that enhance the realism while maintaining high rendering speed, and on fast intersection test methods in order to speed up, for example, collision detection, picking processes and ray tracing. READ MORE

  7. 20. Approximation Algorithms for Geometric Networks

    Author : Mattias Andersson; Data Vetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; control; systems; numerical analysis; Computer science; Geometric Networks; Computational Geometry; Approximation Algorithms; Datalogi; numerisk analys; system; kontroll; Systems engineering; computer technology; Data- och systemvetenskap;

    Abstract : The main contribution of this thesis is approximation algorithms for several computational geometry problems. The underlying structure for most of the problems studied is a geometric network. READ MORE