Sökning: "mixed effects"

Visar resultat 1 - 5 av 603 avhandlingar innehållade orden mixed effects.

  1. 1. Contributions to nonlinear mixed-effects modeling

    Författare :Jacob Leander; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :nonlinear mixed-effects models; stochastic differential equations; parameter estimation; extended Kalman filter; sensitivity equations; stochastic differential equations;

    Sammanfattning : The topic of this thesis is nonlinear mixed-effects models. A nonlinear mixed-effects model is a hierarchical regression model used to analyze measurements from several individuals simultaneously, which allows sharing of information between similar individuals. LÄS MER

  2. 2. Bättre framtidsutsikter? Blandade bostadsområden och grannskapseffekter : En analys av visioner och effekter av blandat boende

    Författare :Zara Bergsten; Lena Magnusson Turner; Kerstin Westin; Uppsala universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Social mix policy; neighbourhood effects; socioeconomic career; social integration; urban planning; multilevel modelling; Human geography; economic geography; Kulturgeografi; ekonomisk geografi; Geography; Geografi;

    Sammanfattning : Internationally, the effect of social composition in urban neighbourhoods on individuals’ life opportunities has been given increased attention both by researchers and policymakers. Socially mixed neighbourhoods have been seen by policymakers as a measure to create better prerequisites for social upward movement and increased social integration. LÄS MER

  3. 3. Mixed Effects Modeling of Deterministic and Stochastic Dynamical Systems - Methods and Applications in Drug Development

    Författare :Jacob Leander; Chalmers University of Technology; []
    Nyckelord :time-to-event; mathematical modeling; dynamical systems; parameter estimation; pharmacodynamics; mixed effects; drug development; pharmacokinetics; pharmacometrics;

    Sammanfattning : Mathematical models based on ordinary differential equations (ODEs) are commonly used for describing the evolution of a system over time. In drug development, pharmacokinetic (PK) and pharmacodynamic (PD) models are used to characterize the exposure and effect of drugs. LÄS MER

  4. 4. Ontogenetic bottlenecks : effects on intraguild predation systems and ecosystem efficiency

    Författare :Birte Reichstein; Lennart Persson; André M. De Roos; Priyanga Amarasekare; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; mixed interactions; cannibalism; life-history omnivory; ontogenetic niche shift; biomass overcompensation; biomass production; ontogenetic asymmetry; indirect effects; biology; biologi; zooekologi; Animal Ecology;

    Sammanfattning : Size-dependent differences between individuals in size-structured organisms have fundamental effect on population and community dynamics. Intraguild predation (IGP) is one specifically interesting constellation that often arises when two size-structured populations interact. LÄS MER

  5. 5. Mixed Block Copolymer Solutions: Self-Assembly and Interactions

    Författare :Solmaz Bayati; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Polymer; Block Copolymer; PEO-PPO-PEO; Pluronics©; Bile Salt; NaGDC; PNIPAAM; PAMPTMA; PAMPS; Mixed Micelle; Self-Assembly; Mixed Complexes;

    Sammanfattning : This thesis incorporates studies on the aqueous systems of two types of thermoresponsive amphiphilic block copolymers; a series of nonionic triblock copolymers comprising blocks of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) denoted as PEO-PPO-PEO block copolymers, and a series of ionic diblock copolymers consisting of one charged block and one block of poly(N-isopropylacrylamide) (PNIPAAM). Various techniques, such as dynamic and static light scattering (DLS and SLS), small angle X-ray and neutron scattering (SAXS and SANS), high sensitivity differential scanning calorimetry (HSDSC), turbidimetry, electrophoretic mobility measurements, and two-dimensional proton NMR nuclear Overhauser effect spectroscopy (2D 1H NMR NOESY), were applied to study these block copolymer systems. LÄS MER