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Simulation Of Social Networks To Maximize The Prevention And Treatment Of Alcohol Use Disorders, Kevin Hallgren
Simulation Of Social Networks To Maximize The Prevention And Treatment Of Alcohol Use Disorders, Kevin Hallgren
Psychology ETDs
Introduction: Previous studies have found associations between alcohol use and having heavy-drinking social networks. This association is thought to be caused by (1) social influence, where ones social network influences his or her drinking, and (2) social selection, where an individual forms relationships with individuals who drink at similar levels. These processes are reciprocal and, when acting simultaneously, create a feedback loop with non-linear dynamics. Computer simulations have allowed complex systems to be modeled in many scientific fields; however, this method has not yet been used to study the dynamic associations between social networks and alcohol use. Method: The present …
Gpgpu-Enabled Physics Based Deformed Model Simulation, Alejandro Enedino Hernandez Samaniego
Gpgpu-Enabled Physics Based Deformed Model Simulation, Alejandro Enedino Hernandez Samaniego
Electrical and Computer Engineering ETDs
Computer simulation techniques are widely adopted nowadays in many areas like manufacturing, engineering, graphics, animation, virtual reality and so on. However, the standard finite element based simulation is notorious for its expensive computation. To address this challenge, I present a GPU-based parallel implementation for simulating large elastic deformation. Classic modal analysis provides a set of orthonormal bases vectors, which span a spectral space encoding the dynamics of the elastic body. As each basis vector is orthogonal to each other, the computation is completely decoupled and can be well-fit into the modern GPGPU platform. We further explore the latest feature of …
Ignoring Individual Differences In Times Of Assessment In Growth Curve Modeling, Patrick Coulombe
Ignoring Individual Differences In Times Of Assessment In Growth Curve Modeling, Patrick Coulombe
Psychology ETDs
Researchers often collect longitudinal data so as to model change over time in a phenomenon and for a population of interest. Inevitably, there will be some variation across individuals in specific time intervals between assessments. By necessity or by choice, a researcher can decide to ignore these individual differences in times of assessments. In this simulation study of growth curve modeling, I investigate how ignoring individual differences in time points when modeling change over time relates to convergence and admissibility of solutions, bias in estimates of parameters, power to detect change over time, and, when there is no change over …
Simulations Of Space Radiation Interactions With Materials, With Application To Dose Estimates For Lunar Shelter And Aboard The International Space Station, Tai Pham
Nuclear Engineering ETDs
This research performed simulations using the state-of-art three dimensional computer codes to investigate the interactions of space radiation with materials and quantify the biological dose onboard the International Space Station (ISS) and in a lunar shelter for future manned missions. High-energy space radiation of Trapped Protons, Solar Particle Events, and GCRs particles interactions are simulated using MCNPX and PHITS probabilistic codes. The energy loss and energy deposition within the shielding materials and in a phantom are calculated. The contributions of secondary particles produced by spallation reactions are identified. Recent experimental measurements of absorbed dose in a phantom aboard the International …