Sökning: "multivariate"

Visar resultat 21 - 25 av 1091 avhandlingar innehållade ordet multivariate.

1. 21. Multivariate integration and visualization of multiblock data in chemical and biological applications

   Författare :Tomas Skotare; Johan Trygg; David Nilsson; Alberto Ferrer; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Multivariate analysis; PCA; PLS; OnPLS; JUMBA; Multiblock; calibration transfer;

   Sammanfattning : Thanks to improvements in technology more data than ever before is generated in almost all fields of science and industry.The data is analyzed to hopefully provide valuable information and knowledge about a product or process, such as how to improve the quality of a manufactured product. LÄS MER

3. 22. Multivariate non-invasive measurements of skin disorders

   Författare :Josefina Nyström; Britta Lindholm-Sethson; Paul SLU Geladi; Lars Noergaard; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Multivariate Data Analysis; Non-invasive techniques; Clinical studies; Principal Component Analysis; Partial Least Squares Discriminant Analysis; Wilcoxon Signed Rank Sum Test; Near-InfraRed spectroscopy; Frequency Bio Impedance Analysis of whole body; Laser Doppler Imaging; Digital Colour Photography; Analytical chemistry; Analytisk kemi;

   Sammanfattning : The present thesis proposes new methods for obtaining objective and accurate diagnoses in modern healthcare. Non-invasive techniques have been used to examine or diagnose three different medical conditions, namely neuropathy among diabetics, radiotherapy induced erythema (skin redness) among breast cancer patients and diagnoses of cutaneous malignant melanoma. LÄS MER

4. 23. Multivariate profiling of metabolites in human disease : Method evaluation and application to prostate cancer

   Författare :Elin Thysell; Henrik Antti; Janne Lehtiö; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; metabolite profiling; metabolomics; predictive metabolomics; mass spectrometry; GC-MS; biomarkers; chemometrics; design of experiments; multivariate data analysis; prostate cancer; bone metastases; plasma; biologisk kemi; biological chemistry;

   Sammanfattning : There is an ever increasing need of new technologies for identification of molecular markers for early diagnosis of fatal diseases to allow efficient treatment. In addition, there is great value in finding patterns of metabolites, proteins or genes altered in relation to specific disease conditions to gain a deeper understanding of the underlying mechanisms of disease development. LÄS MER

5. 24. Statistical advancements in analyzing accelerometer-measured physical activity intensity

   Författare :Jonatan Fridolfsson; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; physical activity; accelerometry; cardiometabolic risk factors; cardiovascular disease; cardiorespiratory fitness; public health; statistics; multivariate; partial least squares; structural equation modelling;

   Sammanfattning : Physical activity (PA) is widely recognized as an important factor in preventing and treating cardiometabolic diseases and reducing mortality. Yet, the health implications of specific PA intensities and the intricate role of fitness in the relationship between PA and health remain less clear. LÄS MER

7. 25. Novel nonlinear multivariate calibration methods

   Författare :Greger Andersson; KTH; []
   Nyckelord :;

   Sammanfattning : The interest fornonlinear modeling has increasedconcomitantly with the increased awareness of the ubiquity ofnonlinear systems. The traditional solution in analyticalchemistry, to linearize the system by some sort of samplepretreatment, is not always an option in process analyticalchemistry. LÄS MER