Sökning: "Multivariat"

Visar resultat 1 - 5 av 54 avhandlingar innehållade ordet Multivariat.

1. 1. Modeling adsorption of organic compounds on activated carbon : a multivariate approach

   Författare :Jufang Wu; Anders Cedergren; Ingrid Fängmark; Ola Claesson; Lars-Gunnar Hammarström; Fritz Stoeckli; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; activated carbon; adsorption; adsorption capacity; adsorption rate; PCA; PLS; binary mixtures; Dubinin-Radushkevich; Wheeler-Jonas; Analytisk kemi; Analytical chemistry; Analytisk kemi; analytisk kemi; Analytical Chemistry;

   Sammanfattning : Activated carbon is an adsorbent that is commonly used for removing organic contaminants from air due to its abundant pores and large internal surface area. This thesis is concerned with the static adsorption capacity and adsorption kinetics for single and binary organic compounds on different types of activated carbon. LÄS MER

3. 2. Chemometric and signal processing methods for real time monitoring and modeling : applications in the pulp and paper industry

   Författare :Anders Björk; Lars-Göran Danielsson; Guy Dumont; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Acoustic; Vibration; Multivariate; Chemometrics; PLS; OSC; PCA; FFT; Wavelets; WT-MRS; CWT-FLE; Pulp Quality; CSF; Brightness; Tensile Strength properties; Optical Properties; Measurement Technology; On-line; Non-invasive; Process Control; Process Analysis; Process Analytical Technology; PAT.; Akustik; Vibrationer; Multivariat; Kemometri; PLS; OSC; PCA; FFT; Wavelets; WT-MRS; CWT-FLE; Massakvalitet; CSF; Ljushet; Dragstyrkeegenskaper; Optiska egenskaper; Mätteknik; On-line; Icke berörande mätning; Processtyrning; Processanalys; Processanalytisk Teknologi; PAT.; Analytical chemistry; Analytisk kemi;

   Sammanfattning : In the production of paper, the quality of the pulp is an important factor both for the productivity and for the final quality. Reliable real-time measurements of pulp quality are therefore needed. LÄS MER

4. 3. Multivariate analyses of proteomic and metabolomic patterns in brain tumors

   Författare :Carl Wibom; A Tommy Bergenheim; Henrik Antti; Mikael Johansson; Janne Lehtiö; Umeå universitet; []
   Nyckelord :glioblastoma; meningioma; proteomics; metabolomics; multivariate analyses; onkologi; Oncology;

   Sammanfattning : Glioblastoma multiforme (GBM) is the most common primary brain tumor. Given the current standard of care, the prognosis for patients diagnosed with this disease is still poor. There consequently exists a need to improve current treatments, as well as to develop new ones. LÄS MER

5. 4. Huggare utan ryggbesvär : en multivariat faktoranalys på modell för påverkan av arbete

   Författare :Sten Gellerstedt; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

7. 5. Uncertainty Estimation in Models of Multivariate Trait Evolution on Given Phylogenies

   Författare :Woodrow Hao Chi Kiang; Krzysztof Bartoszek; Fredrik Ronquist; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phylogenetic comparative methods; Branching stochastic processes; Fylogenetiska jämförande metoder; Förgrenade stokastiska processer;

   Sammanfattning : Phylogenetic comparative methods are a set of statistical methods that model the evolutionary history of species, especially in the context where one has data on certain traits of related extant species that have evolved over a phylogenetic tree in accordance to an underlying stochastic process. This thesis presents a Hessian-based closed-form asymptotic confidence region that covers a wide family of Gaussian continuous-trait evolution models; the result has been implemented in an R package. LÄS MER