Sökning: "non-uniform sampling"

Visar resultat 6 - 10 av 11 avhandlingar innehållade orden non-uniform sampling.

  1. 6. Quantization of Random Processes and Related Statistical Problems

    Författare :Mykola Shykula; Oleg Seleznjev; Patrik Rydén; Igor Rychlik; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scalar quantization; random process; rate; distortion; additive noise model; run-length encoding; compression; sample estimate; asymptotical normality; Mathematical statistics; Matematisk statistik;

    Sammanfattning : In this thesis we study a scalar uniform and non-uniform quantization of random processes (or signals) in average case setting. Quantization (or discretization) of a signal is a standard task in all nalog/digital devices (e.g., digital recorders, remote sensors etc. LÄS MER

  3. 7. Input-Output Stability Analysis of Networked Control Systems

    Författare :Johannes Nygren; Kristiaan Pelckmans; Torkel Glad; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Networked control systems; L2-stability; quantization; delay; packet dropouts; switching systems; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

    Sammanfattning : The main focus of the thesis is to derive stability criteria for networked control system (NCS) models featuring imperfections such as time-varying and constant delays, quantization, packet dropouts, and non-uniform sampling intervals. The main method of proof is based on matrix algebra, as opposed to methods using Lyapunov functions or integral quadratic constraints (IQC). LÄS MER

  4. 8. Advanced NMR techniques for structural elucidation in medicinal chemistry

    Författare :Hermina Wieske; Máté Erdélyi; Mikael Akke; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The nuclear Overhauser effect (NOE) is an NMR phenomenon that can reveal spatial proximity between two atoms. It has found applications in organic chemistry and structural biology including natural product chemistry, organic synthesis, medicinal chemistry, macromolecular structure elucidation and protein-ligand interactions. LÄS MER

  5. 9. Methods for Frequency Domain Estimation of Continuous-Time Models

    Författare :Jonas Gillberg; Lennart Ljung; Fredrik Gustafsson; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Approaching parameter estimation from the discrete-time domain is the dominating paradigm in system identification. Identification of continuous-time models on the other hand is motivated by the fact that modelling of physical systems often take place in continuous-time. LÄS MER

  7. 10. Experimental studies of materials migration in magnetic confinement fusion devices : Novel methods for measurement of macro particle migration, transport of atomic impurities and characterization of exposed surfaces

    Författare :Igor Bykov; Henric Bergsåker; Matej Mayer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; RFP; divertor; limiter; SOL; transport; migration; surface analysis; IBA; ion micro beam; beryllium; tritium; Physics; Fysik;

    Sammanfattning : During several decades of research and development in the field of Magnetically Confined Fusion (MCF) the preferred selection of materials for Plasma Facing Components (PFC) has changed repeatedly. Without doubt, endurance of the first wall will decide research availability and lifespan of the first International Thermonuclear Research Reactor (ITER). LÄS MER