Search for dissertations about: "Discrete wavelet transform"

Showing result 1 - 5 of 11 swedish dissertations containing the words Discrete wavelet transform.

2. 1. Testing for Periodicity and Trend in Long-Memory Processes

   Author : Abdullah Almasri; Statistiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; temperature data.; sunspots data; wind speed data; varve data; Siegel’s test; Fisher’s test; periodogram; Fractional difference process; Discrete wavelet transform; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik; Wavelets; Statistik;

   Abstract : This thesis presents methods of testing the periodicity and trend for the time series, which exhibit dependence over long periods of time. Many such processes can be modeled by a class of models called fractionally differenced processes. READ MORE

4. 2. Multivariate Measurements and Chemical Imaging of Organic Compounds

   Author : Johan Engelbrektsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Spectroscopy; Hyperspectral; Chemical Imaging; PCA; PLS; SERS; Wavelet Transform; Multivariate analysis;

   Abstract : Chemical imaging is an emerging analytical technique, based on the interplay between, most often, spectroscopic measurements and advanced evaluation methodology. With this we can study the distribution of chemical compounds in different compartments, such as individual cells and pharmaceutical tablets. READ MORE

5. 3. Mobile systems for monitoring Parkinson's disease

   Author : Mevludin Memedi; Peter Funk; Jerker Westin; Mark Dougherty; Silvia Coradeschi; Martin Gellerstedt; Örebro universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Home assessments; Parkinson‟s disease; mobile computing technology; e-diary; discrete wavelet transform; principal component analysis; Information technology; Informationsteknologi; E-MOTIONS; Beslutsstöd för Parkinsonbehandling;

   Abstract : This thesis presents the development and evaluation of IT-based methods and systems for supporting assessment of symptoms and enabling remote monitoring of Parkinson‟s disease (PD) patients. PD is a common neurological disorder associated with impaired body movements. READ MORE

6. 4. Wavelet and Spectral Analysis of Some Selected Problems in Reactor Diagnostics

   Author : Carl Sunde; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; core-barrel vibrations; two-phase flow; noise diagnostics; wavelet analysis; detector tube impacting;

   Abstract : Both spectral and wavelet analysis were successfully used in various diagnostic problems involving non-stationary core processes in nuclear power reactors. Three different problems were treated: two-phase flow identification, detector tube impacting and core-barrel vibrations. READ MORE

7. 5. Wavelet and gabor frames and bases : approximation, sampling and applications

   Author : Niklas Grip; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

   Abstract : This thesis is devoted to both theoretical and practical aspects of applied mathematics. It consists of three main parts: Part I consists of an application-oriented introduction to the theory of frames and bases for separable Hilbert spaces, as well as an introduction to the main tools used in the remaining Chapters: Time-frequency analysis, Gabor frames and wavelet frames. READ MORE