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Title: Toward a formalization of demographic transition theory
Creator: Lazer, S. Charles, 1946-
Date: 1969
Collection: Electronic Theses & Dissertations

Title: Simulation of batch drying rice
Creator: Chan, Nguyen Kim
Date: 1976
Collection: Electronic Theses & Dissertations

Title: Diverse platform modeling of dynamical systems
Creator: Mitchell, Robert Alex
Date: 1991
Collection: Electronic Theses & Dissertations

Title: Two-dimensional drafting template and three-dimensional computer model representing the average adult male in automotive seated postures
Creator: Bush, Neil James
Date: 1992
Collection: Electronic Theses & Dissertations

Title: The dynamics and scientific visualization for the electrophoretic deposition processing of suspended colloidal particles onto a reinforcement fiber
Creator: Robinson, Peter Timothy
Date: 1993
Collection: Electronic Theses & Dissertations

Title: Three-dimensional dynamic motion of the shoulder complex
Creator: Reid, Tamara Ann
Date: 1994
Collection: Electronic Theses & Dissertations

Title: Using top down multiport modeling for automotive applications
Creator: Minor, Mark Andrew
Date: 1996
Collection: Electronic Theses & Dissertations

Title: Shelf life estimation of USP 10mg Prednisone calibrator tablets in relation to dissolution & new windows-based shelf life computer program
Creator: Yoon, Seungyil
Date: 2000
Collection: Electronic Theses & Dissertations

Title: Dynamic simulation of the electrorheological effect in a uniformly distributed electric field
Creator: Cristescu, Nicolae
Date: 2000
Collection: Electronic Theses & Dissertations

Title: Evaluation of calibration for optical see-through augmented reality systems
Creator: McGarrity, Erin Scott
Date: 2001
Collection: Electronic Theses & Dissertations

Title: Vision-based tracking of fiducials for augmented reality
Creator: Middlin, Paul W.
Date: 2002
Collection: Electronic Theses & Dissertations

Title: Validation of two growth and yield models on red pine plantations in Michigan
Creator: Smith-Mateja, Erin E.
Date: 2003
Collection: Electronic Theses & Dissertations

Title: Modular model assembly from finite element models of components
Creator: Ren, Zhen
Date: 2008
Collection: Electronic Theses & Dissertations

Title: Numerical model for hemodialysis
Creator: Siefert, Andrew W.
Date: 2009
Collection: Electronic Theses & Dissertations

Title: Orientation guided texture synthesis using PatchMatch
Creator: Dutka, Rosemary L.
Date: 2013
Collection: Electronic Theses & Dissertations
Description: Texture describes the unique structural patterns that we perceive in the world. Various surface geometric details such as animal fur, plant leaves, and carpets can be thought of as texture. In computer graphics, textures stored as images are ubiquitously used to decorate boundary surfaces of objects. There are multiple approaches to acquire realistic and aesthetically pleasing textures. One of the most popular methods is a process known as texture synthesis, in which we produce seamless...
Show moreTexture describes the unique structural patterns that we perceive in the world. Various surface geometric details such as animal fur, plant leaves, and carpets can be thought of as texture. In computer graphics, textures stored as images are ubiquitously used to decorate boundary surfaces of objects. There are multiple approaches to acquire realistic and aesthetically pleasing textures. One of the most popular methods is a process known as texture synthesis, in which we produce seamless nonrepetitive textures from a small patch of texture sample.In this thesis, we present an orientation guided fast texture synthesis based on an image editing tool, PatchMatch, which is included in PhotoShop. Given an example image, our model adopts a hierarchical process to improve retention of structural texture features at multiple scales. We generalize PatchMatch by using orientation to guide the alignment of texture features, indicated by a planar direction field, in the creation of large texture patches. To demonstrate the effectiveness of our approach, we first apply our algorithm in designing new textures with two and four-way symmetry which can be extended to n-way symmetry, and then in enhancing latent fingerprints. Furthermore, our results show empirically that orientation guided PatchMatch has the advantages of providing control over the density of singularities without knowing the exact locations and reducing spurious singularities.
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Title: The Köhler effect : intergroup competition using software-generated partners
Creator: Moss, Omotayo Micheal
Date: 2015
Collection: Electronic Theses & Dissertations
Description: Past research has examined the Köhler motivation gain effect (i.e., when an inferior team member performs better when paired with a more capable partner, from knowledge of his/her individual performance) in an active video game (AVG) using a superior, software-generated partner (SGP). The present investigation examined how incorporating a superior SGP into an AVG would affect an individual’s motivation when competing against one other human/virtual-partner team in an planking competition....
Show morePast research has examined the Köhler motivation gain effect (i.e., when an inferior team member performs better when paired with a more capable partner, from knowledge of his/her individual performance) in an active video game (AVG) using a superior, software-generated partner (SGP). The present investigation examined how incorporating a superior SGP into an AVG would affect an individual’s motivation when competing against one other human/virtual-partner team in an planking competition. Participants (N = 90 college-aged students) were randomly assigned to one of three conditions: individual control, conjunctive partner no competition (PNC), or conjunctive partner with opposing-team competition (PWT) in a 3 (conditions) x 2 (gender) factorial design. Participants performed the first series of five exercises alone, and after a rest period those in the partner conditions were told that they would do the remaining trials with a same-sex SGP whom they could observe during their performance. The partner’s performance was always superior to the participant’s. Participants were also told that they would work with their SGP as a team, and that the team’s score would be defined as the score of the person who stops holding the exercise first. Those in the opposing-team competition condition were also told that they and their virtual partner would be competing against one other human-virtual partner team. A significant motivation gain was observed in all partnered conditions compared to the control, F(2,89) = 15.63, p < .001, but the PNC and PWT groups were not significantly different from each other (p = 0.35). These findings suggest that competing against an opposing team does not ultimately boost the Köhler effect in AVGs.
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Title: Modeling and simulation of strongly coupled plasmas
Creator: Chowdhury, Rahnuma Rifat
Date: 2016
Collection: Electronic Theses & Dissertations
Description: The objective of this work is to develop new modeling and simulation tools for studying strongly coupled plasmas (SCP). Strongly coupled plasmas are different from traditional plasmas as potential energy is larger than the kinetic energy. The standard plasma model does not account for some major effects in SCP: 1) the change in the permittivity 2) the impact on relaxation of the charged particles undergoing Coulomb collisions in a system with weakly shielded long range interactions3) the...
Show moreThe objective of this work is to develop new modeling and simulation tools for studying strongly coupled plasmas (SCP). Strongly coupled plasmas are different from traditional plasmas as potential energy is larger than the kinetic energy. The standard plasma model does not account for some major effects in SCP: 1) the change in the permittivity 2) the impact on relaxation of the charged particles undergoing Coulomb collisions in a system with weakly shielded long range interactions3) the impact of statistical fluctuations in strongly coupled plasmas that leads to non-Markovian effects. Proper modeling of such systems through consideration of Lévy flight processes gives rise to fractional derivatives in time that result in an incorporation of time history in the model. A Lévy flight is a random walk in which the steps are defined in terms of the step-lengths, which have a certain probability distribution, with the directions of the steps being isotropic and random. Lévy processes in the plasma give rise to fluctuations in medium through which the electromagnetic waves are propagating. Averaging over the Lévy processes will allow us to relate to other important parameters in the plasma.
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Title: Sensitivities of simulated fire-induced flows to fire shape and background wind profile using a cloud-resolving model
Creator: Stageberg, Marshall S.
Date: 2018
Collection: Electronic Theses & Dissertations
Description: Wildland fire behavior can be very difficult to predict because of inherent non-linearities and multi-scale processes associated with fire-atmosphere interactions. Circulations and complex flows in the vicinity of a fire are driven by heat release from the fire. Since extreme conditions in the fire environment make collecting meteorological observations difficult, we employ a high-resolution numerical model to simulate the atmospheric responses to a fire. Specifically, we have chosen Cloud...
Show moreWildland fire behavior can be very difficult to predict because of inherent non-linearities and multi-scale processes associated with fire-atmosphere interactions. Circulations and complex flows in the vicinity of a fire are driven by heat release from the fire. Since extreme conditions in the fire environment make collecting meteorological observations difficult, we employ a high-resolution numerical model to simulate the atmospheric responses to a fire. Specifically, we have chosen Cloud Model 1 (CM1) because it is designed to simulate high resolution, cloud scale processes that are comparable in scale to fire-induced flows. A surface sensible heat flux is added to CM1 to simulate the effect of a fire and the resultant fire-induced circulations and complex flows are examined. Using CM1 allows us to produce simulations with fine spatial and temporal resolution with a detailed representation of the evolution of the fire-atmosphere system. For the purpose of this study, we perform a series of simulations to examine the sensitivity of fire-induced flows to the shape of the simulated fire and to background wind profile. We show how fire shape and the background wind profile affect the intensity and extent of fire-induced perturbations to the lower atmosphere. The results from these numerical simulations, when combined with field observations, help improve our understanding of fire-atmosphere interactions. The results from this study can potentially help fire managers with decision-making when fighting wildland fires.
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Title: Balancing exploration and exploitation in bottom-up organizational learning contexts
Creator: Walker, Ross Ian
Date: 2018
Collection: Electronic Theses & Dissertations
Description: In order to keep pace with a rapidly changing environment, organizations must navigate a fundamental tension between exploration and exploitation. Over time, organizations often drift toward exploitation of known strengths and established resources, but this tendency can be harmful in a dynamic and competitive landscape. A classic simulation by James March (1991) demonstrated the importance of maintaining some degree of belief heterogeneity in an organization for the sake of long-term...
Show moreIn order to keep pace with a rapidly changing environment, organizations must navigate a fundamental tension between exploration and exploitation. Over time, organizations often drift toward exploitation of known strengths and established resources, but this tendency can be harmful in a dynamic and competitive landscape. A classic simulation by James March (1991) demonstrated the importance of maintaining some degree of belief heterogeneity in an organization for the sake of long-term learning. In March’s lineage, this thesis examines the effects of various exploratory strategies (i.e., individual experimentation, codification frequency, structural modularity, and employee turnover) on organizational learning in a bottom-up, networked, interpersonal learning context. Results demonstrate the complex interdependency of these variables in the exploration/exploitation tradeoff. Exploratory analyses suggest that a small degree of random individual experimentation has a favorable reward-to-risk ratio and that it is preferable to turnover as an exploratory strategy.
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Title: Adaptation to visual perturbations while learning a novel virtual reaching task
Creator: Narayanan, Sachin Devnathan
Date: 2019
Collection: Electronic Theses & Dissertations
Description: "Introduction and Purpose: The movements we do to perform our day-to-day activities have always been riddled with perturbations, to which we adapt and learn. The studies looking at this aspect of motor learning should consider, the biomechanical differences that exist between individuals and create a novel task that can test every individual without any bias. This was achieved in our study by using a virtual environment to perform a novel motor skill in order to investigate how people learn...
Show more"Introduction and Purpose: The movements we do to perform our day-to-day activities have always been riddled with perturbations, to which we adapt and learn. The studies looking at this aspect of motor learning should consider, the biomechanical differences that exist between individuals and create a novel task that can test every individual without any bias. This was achieved in our study by using a virtual environment to perform a novel motor skill in order to investigate how people learn to adapt to perturbations. Methods: 13 college-age participants (females = 7, Mean = 21.74 +/- 2.55) performed upper body movements to control a computer cursor. Visual rotation of the cursor position was introduced as a perturbation for one-half of the practice trials. Movement time and normalized path length were calculated. One way repeated measures ANOVA was performed to analyze significance between the performance at different times of the task. Results: Significant learning seen while learning the initial baseline task (p<0.0001) and a significant drop in performance upon immediate exposure to the perturbation (p =0.005). No significant adaptation over practice with the perturbation (p = 0.103) or significant after-effects on removal of the perturbation (p = 0.383). Conclusions: Results suggests differences in adaptation when the task is novel when compared to other adaptation studies and such novel tasks trigger a different type of learning mechanism when compared to adaptation."--Page ii.
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