Sökning: "Patrik Rydén"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Patrik Rydén.

1. 1. Development of in silico methods to aid chemical risk assessment : focusing on kinetic interactions in mixtures

   Författare :Elena Golosovskaia; Patrik L. Andersson; Stefan Örn; Patrik Rydén; Ester Papa; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; QSAR; physiologically based kinetic; PBK; zebrafish; ADME; mixture; bisphenols; PFAS; toxicokinetics; environmental science; miljövetenskap; Toxicology; toxikologi;

   Sammanfattning : The environment and biota are constantly exposed to numerous chemicals through contaminated food, soil, water, and air. These chemicals can be taken up and distributed to reach sensitive tissues where they may cause various effects. Many of these chemicals lack data on their environmental and human health effects. LÄS MER

3. 2. Estimation of the reliability of systems described by the Daniels Load-Sharing Model

   Författare :Patrik Rydén; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-parametric and parametric estimation; Equal Load-sharing models; asymptotic distribution; martingale; resam-pling; life testing; reliability; Mathematical statistics; Matematisk statistik;

   Sammanfattning : We consider the problem of estimating the failure stresses of bundles (i.e. the tensile forces that destroy the bundles), constructed of several statisti-cally similar fibres, given a particular kind of censored data. LÄS MER

4. 3. Statistical analysis and simulation methods related to load-sharing models

   Författare :Patrik Rydén; Yuri Belyaev; Uwe Jensen; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-parametric and parametric estimation; load-sharing models; asymptotic distribution; martingale; resampling; life testing; reliability;

   Sammanfattning : We consider the problem of estimating the reliability of bundles constructed of several fibres, given a particular kind of censored data. The bundles consist of several fibres which have their own independent identically dis-tributed failure stresses (i.e.the forces that destroy the fibres). LÄS MER

5. 4. Essays on spatial point processes and bioinformatics

   Författare :Jessica Fahlén; Patrik Rydén; Xavier de Luna; Yudi Pawitan; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coverage process; vacancy; microarray; pre-processing; sensitivity; bias; dye-normalization; FFPE; storage time effects; Statistics; Statistik; Statistics; statistik;

   Sammanfattning : This thesis consists of two separate parts. The first part consists of one paper and considers problems concerning spatial point processes and the second part includes three papers in the field of bioinformatics. LÄS MER

7. 5. Data-driven quality management using explainable machine learning and adaptive control limits

   Författare :Niklas Fries; Patrik Rydén; Jun Yu; Rebecka Jörnsten; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; quality management; machine learning; local explanation methods; process adjustment policies; simulation; matematisk statistik; Mathematical Statistics; data science; data science;

   Sammanfattning : In industrial applications, the objective of statistical quality management is to achieve quality guarantees through the efficient and effective application of statistical methods. Historically, quality management has been characterized by a systematic monitoring of critical quality characteristics, accompanied by manual and experience-based root cause analysis in case of an observed decline in quality. LÄS MER