Sökning: "posterior fusion"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden posterior fusion.

1. 1. Bayesian Inference for Microwave Diagnostics at Joint European Torus

   Författare :Stefan Schmuck; Per Brunsell; Thomas Jonsson; Jakob Svensson; Laurie Porte; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ECE; Bayesian; Fourier transform; spectroscopy; joint inference; length-scale; Gaussian process; microwave diagnostic; JET; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The major goal of this thesis is to perform Bayesian inference jointly for electron kinetic profiles, a toroidal magnetic field correction, diagnostic sensitivities, and wall reflection properties given noisy measurements of four microwave diagnostics at the tokamak JET. Besides the measurements, this kind of inference considers prior knowledge, like profile length-scales, to update objectively the information about the physics parameters. LÄS MER

3. 2. Channel Prediction and Target Tracking for Multi-Agent Systems

   Författare :Markus Fröhle; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gaussian processes; multitarget tracking; channel prediction; extended target tracking; Multi-agent system; posterior fusion; location uncertainty;

   Sammanfattning : Mobile moving agents as part of a multi-agent system (MAS) utilize the wireless communication channel to disseminate information and to coordinate between each other. This channel is error-prone and the transmission quality depends on the environment as well as on the configuration of the transmitter and the receiver. LÄS MER

4. 3. Lumbar fusion for chronic low-back pain in isthmic spondylolisthesis

   Författare :Per Ekman; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Exercise; Outcome; Long-term; interbody fusion; spinal fusion; lumbar; Adjacent segment degeneration; Isthmic spondylolisthesis; Degenerative disc disease; Chronic low back pain; predictor; prospective; pain drawing; sciatica; psychologic screening; Randomized controlled trial;

   Sammanfattning : Manifestation of isthmic spondylolisthesis (IS), with a prevalence of 5% in the general population, varies from totally asymptomatic to severe disability. Although fusion has positive short-term effects, the long-term outcome of such treatment, as well as possible accelerated degeneration of adjacent segment discs (ASD) and its clinical significance, are unknown. LÄS MER

5. 4. Biomechanical and Clinical Aspects on Fixation Techniques in the Cervical Spine

   Författare :Thomas Henriques; Claes Olerud; Sune Larsson; Dieter Grob; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Biomechanics; Atlanto-axial fusion; Distractive flexion injuries; cervical spine; adjacent level motion; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin;

   Sammanfattning : The present work is analyzing the general biomechanical aspects of fixation techniques in the upper and lower cervical spine along with clinical implications.The in vitro biomechanical properties of five different posterior atlanto-axial fixation techniques are compared. LÄS MER

7. 5. Investigating the function of the Receptor Tyrosine Kinase ALK during Drosophila melanogaster development

   Författare :Christina Lorén; Mike Taylor; Umeå universitet; []
   Nyckelord :DAlk; receptor tyrosine kinase; Jeb; visceral muscle fusion; ERK; Drosophila; endoderm; molecular cell biology; molekylär cellbiologi;

   Sammanfattning : The Drosophila melanogaster gene Anaplastic Lymphoma Kinase (DAlk) is homologous to mammalian Alk, which is a member of the Alk/Ltk family of receptor tyrosine kinases (RTKs). In humans the t(2;5) translocation involving the Alk locus encodes an active form of Alk that is the causative agent in Non-Hodgkin’s Lymphoma (Morris et al., 1994). LÄS MER