Search for dissertations about: "ROI"

Showing result 6 - 10 of 27 swedish dissertations containing the word ROI.

  2. 6. Preferential Coding for Mobile Multimedia Services

    Author : Muhammad Imran Iqbal; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Different parts of source encoded multimedia streams such as those associated with standard image or video formats possess different levels of importance with respect to their contribution to the quality of the reconstructed image or video. This unequal importance among data within a codestream gives rise to preferential treatment of the more significant parts of the codestream compared to the less important parts. READ MORE

  4. 7. Interaction Between Mycobacterium tuberculosis and Human Neutrophils

    Author : Nasrin Perskvist; Monica Thelestam; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Mycobacterium tuberculosis, the etiologic agent of tuberculosis, is responsible for more deaths each year than any other single pathogen. Mononuclear phagocytes and T cells are crucially involved in the control and local containment of this infection. Less is known about the contribution of neutrophils to control tuberculosis. READ MORE

  5. 8. On Perception-Based Error Protection for Mobile Multimedia

    Author : Muhammad Imran Iqbal; Blekinge Tekniska Högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Representation of multimedia requires large amounts of data. Therefore, multimedia source signals are compressed to reduce the data rate that would otherwise be required for its transmission. However, compression renders multimedia data more vulnerable to transmission errors. READ MORE

  6. 9. Nuclear medicine methods in idiopathic Parkinsonism : pre- and postsynaptic dopamine SPECT

    Author : Susanna Jakobson Mo; Katrine Åhlström Riklund; Anne Larsson Strömvall; Lars Forsgren; Rimma Axelsson; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Nuclear medicine; SPECT; 123I-FP-Cit; 123I-IBZM; dopamine; parkinsonism; Parkinson’s disease; multiple system atrophy; progressive supranuclear palsy; Radiology; radiologi;

    Abstract : Background: Single photon emission computed tomography (SPECT) with dopamine transporter (DAT) and dopamine D2 receptor (D2R) ligands can visualise the integrity of the nigrostriatal dopamine system. Parkinson’s disease (PD) and the atypical parkinsonian diseases (APD), progressive supranuclear palsy (PSP) and multiple system atrophy (MSA), have similar symptoms and dopamine depletion, but differ in pharmacological response and prognosis. READ MORE

  7. 10. Development, validation and application of advanced neuroimaging analysis tools for in vivo neuroreceptor studies

    Author : Zsolt Cselényi; Karolinska Institutet; Karolinska Institutet; []
    Keywords : PET; neuroreceptor; multi-receptor analysis; kinetic analysis; parametric imaging; wavelet filtering; artificial neural network; unsupervised cluster analysis;

    Abstract : Positron emission tomography (PET) is an imaging technology, which can be used to study neuroreceptors in the human brain in vivo. The technique estimates the regional binding of radiolabelled ligands to neuroreceptors and the data are commonly displayed as images showing the distribution of radioactivity in the brain volume. READ MORE