Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Longitudinal measurements"”.
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A Predictive Time-to-Event Modeling Approach with Longitudinal Measurements and Missing Data
… how the predictor variables including repeated measurements of the same subjects are affecting the future time-to-event. Such a prediction problem is particularly more challenging due to the fact that the future values of predictor variables are unknown, and they may vary dynamically over time. …
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JOINT MODELING OF MULTIVARIATE LONGITUDINAL DATA AND COMPETING RISKS DATA
… it is common to observe one or more sequences of longitudinal measurements, as well as one or more time to event outcomes. A competing risks situation arises when the probability of occurrence of one event isaltered/hindered by another time to event. A classical example is different causes of …
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A Biaxial Magneto-optical Kerr Magnetometer for Studying Magnetic Thin Films
… the examination of two independent Kerr effect measurements for application in magneto-optical recording. I have tested the equipment on ferromagnetic films and Fe/ Al2O3 multilayers. Angle dependent measurements show that the polar magneto-optical Kerr effect diminishes as the poles are rotated …
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Using nested structures to select models for developmental trajectories of cognitive abilities in adulthood
… growth models. Choice of method for modeling longitudinal data is often based on convention or familiarity with a particular modeling approach. It is argued that this should not be common practice, but rather the data and model comparisons should be used to inform the choice of model. The …
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Advanced Bioelectronic and Microphysiological Systems for Functional Studies of Stem Cell-Derived Neural Models
… decomposition, and network mapping across longitudinal measurements. Key findings include: • Material and substrate-related effects on 2D stem-cell-derived neuronal growth. • Tau-induced hyperexcitability and synaptic disruption in iNeuron-astrocyte co-cultures. • Axonal swelling and …
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Novel Statistical Methods for Multiple-variant Genetic Association Studies with Related Individuals
… in genetic association tests. Also, repeated measurements of phenotype and dynamic covariates from longitudinal studies bring in more opportunities but also challenges in the discovery of disease-related genetic factors. This dissertation focuses on developing novel statistical methods to …
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Multimodality Imaging of Tumor Vasculature and Metabolism
… response and guide surgeries. In chapter 2, longitudinal MRI was applied to monitor the initiation and development of intracranial tumors and assess the changes in tumor vascular volume and permeability in a mouse model of breast cancer brain metastases. Using a 9.4T system, high resolution …
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Understanding longitudinal ADCP measurements to determine water velocities for open channel flow
… of practice relies on time-averaged stationary measurements and transect measurements (performed for cross sections roughly perpendicular to the flow) to describe complex hydraulic processes. This research seeks to understand a longitudinal acoustic Doppler current profiler (ADCP) measurement …
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Joint models for nonlinear longitudinal profiles in the presence of informative censoring
… with a long tail to the right. The observed longitudinal gametocyte profile also has a nonlinear relationship with time. In addition, since most malaria intervention studies are not designed to optimally measure the evolution of the longitudinal gametocyte profile, there are very few …
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Characterizing various aspects of the male genital tract barrier function and immunity
… tissue after surgical removal. How these measurements are impacted by asymptomatic STIs is explored. The central hypothesis is that the inner foreskin has a relatively reduced barrier function compared to the other penile sites, which is further reduced by the presence of asymptomatic STIs …