Sökning: "tomas eriksson"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden tomas eriksson.

  1. 1. Trellis Source Coding Methods for Low Rates and Short Blocks

    Författare :Tomas Eriksson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektronik och elektroteknik; Electronics and Electrical technology; systemteori; Informatik; systems theory; Informatics; image coding; tailbiting source codes; BCJR algorithm; linear congruential recursions; trellis coding; low rate quantization; rate-distortion theory; Systems engineering; computer technology; Data- och systemvetenskap; Signal processing; Signalbehandling;

    Sammanfattning : Trellis quantization is a finite state machine based method for data compression. It is mainly applied to quantizing noise-like sources. In this thesis new trellis codes suitable for low rate quantization are derived. LÄS MER

  3. 2. Change Point Detection with Applications to Wireless Sensor Networks

    Författare :Markus Eriksson; Tomas Olofsson; Idris Eckley; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Change Point Detection; Signal Processing; Dynamic Programming; Electrical Engineering with specialization in Signal Processing; Elektroteknik med inriktning mot signalbehandling;

    Sammanfattning : In this thesis work we develop a new algorithm for detecting joint changes in statistical behavior of multiple, simultaneously recorded, signals. Such signal analysis is commonly known as multivariate change point (CP) detection (CPD) and is of interest in many scientific and engineering applications. LÄS MER

  4. 3. On the pricing equations of some path-dependent options

    Författare :Jonatan Eriksson; Johan Tysk; Maciej Klimek; Tomas Björk; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical analysis; Parabolic partial differential equations; variational inequalities; American options; barrier options; monotonicity in the volatility; turbo warrants; pricing formulas; Matematisk analys; Mathematical analysis; Analys;

    Sammanfattning : This thesis consists of four papers and a summary. The common topic of the included papers are the pricing equations of path-dependent options. LÄS MER

  5. 4. The Utility of Manganese for Magnetic Resonance Imaging of Transient Myocardial Ischemia

    Författare :Rolf Eriksson; Håkan Ahlström; Tomas Bjerner; Håkan Arheden; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Radiologisk forskning; Radiological research; Radiologisk forskning; radiologi; Radiology;

    Sammanfattning : In order to improve the diagnosis of coronary artery disease, better methods for detection of myocardial perfusion defects would be useful. One of the methods used for myocardial perfusion evaluation today is magnetic resonance imaging. LÄS MER

  7. 5. Extracellular Matrix and Connective Tissue Cells of the Tumor Microenvironment

    Författare :Tomas Friman; Christian Sundberg; Kristofer Rubin; Ulf Eriksson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; Morphology; cell biology; pathology; Morfologi; cellbiologi; patologi; Tumour biology; Tumörbiologi; Medical Science; Medicinsk vetenskap;

    Sammanfattning : In addition to malignant cells, solid tumors comprise supporting stromal tissue that consists of extra cellular matrix (ECM), connective tissue cells, inflammatory cells and blood vessels. The stromal compartment and the malignant cells together shape the tumor microenvironment that in turn determines tumor progression and efficacy of anti-tumor treatments. LÄS MER