Search for dissertations about: "blind source separation"

Showing result 6 - 10 of 10 swedish dissertations containing the words blind source separation.

2. 6. Signal Processing Tools for Electron Microscopy

   Author : Jakob Spiegelberg; Jan Rusz; Kristiaan Pelckmans; Peter M. Oppeneer; Johan Verbeeck; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : The detection of weak signals in noisy data is a problem which occurs across various disciplines. Here, the signal of interest is the spectral signature of the electron magnetic chiral dichroism (EMCD) effect. READ MORE

4. 7. DIGITAL ANALYSIS OF CARDIAC ACOUSTIC SIGNALS IN CHILDREN

   Author : Milad El-Segaier; Lund Pediatrik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pediatri; Medicin människa och djur ; Cardiovascular system; Kardiovaskulära systemet; Pediatrics; Medicine human and vertebrates ; Heart sound detection; Logistic regression; Receiver operating characteristic curve; Signal deconvolution.; Short-time Fourier transform; Cardiac acoustic signals; Time interval measurements;

   Abstract : DIGITAL ANALYSIS OF CARDIAC ACOUSTIC SIGNALS IN CHILDREN Milad El-Segaier, MD Division of Paediatric Cardiology, Department of Paediatrics, Lund University Hospital, Lund, Sweden SUMMARY Despite tremendous development in cardiac imaging, use of the stethoscope and cardiac auscultation remains the primary diagnostic tool in evaluation of cardiac pathology. With the advent of miniaturized and powerful technology for data acquisition, display and digital signal processing, the possibilities for detecting cardiac pathology by signal analysis have increased. READ MORE

5. 8. Textile electrodes for ECG measurements in distributed care, performance and applications

   Author : Linda Rattfält; Per Ask; Peter Hult; Maria Lindén; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The aim of this thesis work has been to explore textile electrodes for electrocardiographic (ECG) measurements both in terms of their electrode properties and possibility to further improve their robustness to noise with signal processing techniques. Previous research within the field has shown that acquisition of ECG is possible with textile electrodes, but little attention has been focused on how they function and especially if movements are included in the measurement protocol. READ MORE

6. 9. Smartware electrodes for ECG measurements : Design, evaluation and signal processing

   Author : Linda Rattfält; Per Ask; Fredrik Björefors; Kaj Lindecrantz; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The aim of this thesis work has been to study textile and screen printed smartware electrodes for electrocardiographic (ECG) measurements both in terms of their electrode properties and possibility to further improve their robustness to movement induced noise by using signal processing. Smartware electrodes for ECG measurements have previously been used in various applications but basic electrical electrode properties have not sufficiently been looked into. READ MORE

7. 10. High-Density Electromyography-Based Methods for Joint Torque Prediction and Motor Unit Behavior Observation

   Author : Asta Kizyte; Ruoli Wang; Elena Gutierrez-Farewik; Christian Antfolk; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ankle; isometric contractions; machine learning; neuromuscular control; spinal cord injury; Fotled; isometriska kontraktioner; maskininlärning; neuromuskulär kontroll; ryggmärgsskada; Teknisk mekanik; Engineering Mechanics;

   Abstract : Electromyography (EMG) is a technique that measures the electrical activity of muscles. It reflects muscle activation and provides an interface to the central nervous system at the level of the muscle or individual motor units, which helps us understand the mechanisms of muscle force production, control, and coordination. READ MORE