Search for dissertations about: "Patrik Wahlberg"

Found 3 swedish dissertations containing the words Patrik Wahlberg.

  2. 1. On methods for pattern recognition with application to epileptic electroencephalograms

    Author : Patrik Wahlberg; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; clustering; EEG signal processing; epilepsy; statistical robustness; feature extraction; signal alignment; denoising; Wiener filtering; time-frequency analysis.; Signal processing; Signalbehandling;

    Abstract : The thesis treats methods for pattern recognition in multichannel electroencephalogram (EEG) signals, for application to diagnostics of epilepsy. Parts I-IV treat methods for feature extraction and clustering of EEG spikes, occurring between epileptic seizures, and part V presents a method for filtering seizure onset EEG signals. READ MORE

  4. 2. Matrix degrading proteases in the ovary : expression and function

    Author : Patrik Wahlberg; Tor Ny; Ilpo Huhtaniemi; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; ovary; ovulation; corpus luteum; plasminogen; PA; MMP; rat; mouse; Biokemi; Biochemistry; Biokemi; medicinsk biokemi; Medical Biochemistry;

    Abstract : Extracellular matrix degrading proteases from the plasminogen (plg) activator (PA) and the matrix metalloproteinase (MMP) systems have been implicated as important mediators of ovulation and corpus luteum (CL) formation and regression. The aim of this thesis was to investigate the expression and regulation of PAs and MMPs in the ovary and to examine their functional roles for CL formation and function. READ MORE

  5. 3. On time-frequency analysis and pseudo-differential operators for vector-valued functions

    Author : Patrik Wahlberg; Joachim Toft; Luigi Rodino; Växjö universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Abstract : This thesis treats different aspects of time-frequency analysis and pseudodifferential operators, with particular emphasis on techniques involving vector-valued functions and operator-valued symbols. The vector (Banach) space is either motivated by an application as in Paper I, where it is a space of stochastic variables, or is part of a general problem as in Paper II, or arises naturally from problems for scalar-valued operators and function spaces, as in Paper V. READ MORE