Sökning: "multivariate test"

Visar resultat 26 - 30 av 169 avhandlingar innehållade orden multivariate test.

1. 26. Metabolomics studies of ALS : a multivariate search for clues about a devastating disease

   Författare :Anna Wuolikainen; Peter M Andersen; Henrik Antti; Stefan L Marklund; Thomas Moritz; Thomas Hankemeier; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amyotrophic lateral sclerosis ALS ; motor neuron disease; Lou Gehrig’s disease; human disease; CSF; biomarkers; metabolomics; metabonomics; chemometrics; design of experiments; multivariate analysis.; Neurology; Neurologi; Neurology; neurologi;

   Sammanfattning : Amyotrophic lateral sclerosis (ALS), also known as Charcot’s disease, motor neuron disease (MND) and Lou Gehrig’s disease, is a deadly, adult-onset neurodegenerative disorder characterized by progressive loss of upper and lower motor neurons, resulting in evolving paresis of the linked muscles. ALS is defined by classical features of the disease, but may present as a wide spectrum of phenotypes. LÄS MER

3. 27. Sensor-based knowledge- and data-driven methods : A case of Parkinson’s disease motor symptoms quantification

   Författare :Somayeh Aghanavesi; Mark Dougherty; Mobyen Uddin Ahmed; Högskolan Dalarna; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Parkinson’s disease; motion sensors; motor symptoms; smartphone; microdata; multivariate analysis; data-driven; knowledge-driven; support vector machine stepwise regression; predictive models; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys;

   Sammanfattning : The overall aim of this thesis was to develop and evaluate new knowledge- and data-driven methods for supporting treatment and providing information for better assessment of Parkinson’s disease (PD).PD is complex and progressive. There is a large amount of inter- and intravariability in motor symptoms of patients with PD (PwPD). LÄS MER

4. 28. Aspects of multilinear algebra in statistical analysis of seasonal multivariate time series

   Författare :Björn Holmquist; Statistiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Representations of concepts from multivariate statistics are studied using multilinear algebra. Applications are given to the analysis of seasonal multivariate time series. The first paper concerns a class of permutation matrices which are representations of permutation operators on tensor spaces. LÄS MER

5. 29. Contributions to Kernel Equating

   Författare :Björn Andersson; Fan Yang-Wallentin; Marie Wiberg; Alina A. von Davier; Jorge González; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; observed-score test equating; item response theory; R; equipercentile equating; asymptotic standard errors; non-equivalent groups with anchor test design; Statistics; Statistik;

   Sammanfattning : The statistical practice of equating is needed when scores on different versions of the same standardized test are to be compared. This thesis constitutes four contributions to the observed-score equating framework kernel equating. LÄS MER

7. 30. Cellular Reactions and Behavioral Changes in Focal and Diffuse Traumatic Brain Injury : A Study in the Rat and Mouse

   Författare :Sara Ekmark Lewén; Lars Hillered; Niklas Marklund; Anders Lewén; Mårten Risling; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Traumatic brain injury; Astrocytes; Inflammatory response; Multivariate concentric square field test; Morris water maze; Exploratory behavior; Risk taking; Functional outcome.; Neurosurgery; Neurokirurgi;

   Sammanfattning : Traumatic brain injury (TBI) is a severe condition and a major cause of death and disability. There is no pharmacological treatment available in clinical practice today and knowledge of brain injury mechanisms is of importance for development of neuroprotective drugs. LÄS MER