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News-Driven Expectations And Volatility Clustering, Sabiou M. Inoua

ESI Working Papers

Financial volatility obeys two well-established empirical properties: it is fat-tailed (power-law distributed) and it tends to be clustered in time. Many interesting models have been proposed to account for these regularities, notably agent-based computational models, which typically invoke complicated mechanisms, however. It can be shown that trend-following speculation generates the power law in an intrinsic way. But this model cannot exaplain clustered volatility. This paper extends the model and offers a simple explanation for clustered volatility: the impact of exogenous news on traders’ expectations. Owing to the famous no-trade results, rational expectations, the dominant model of news-driven expectations, is hard …

The Relationship Between Small-Group Discourse And Student-Enacted Levels Of Cognitive Demand When Engaging With Mathematics Tasks At Different Depth Of Knowledge Levels, Kristy Litster

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High cognitive demand (HCD) tasks can help students develop a deeper understanding of mathematics. Teachers need interventions that encourage students to engage in HCD activities. Small-group discourse provides HCD opportunities for students while solving mathematics problems. Discourse can take place after students solve problems individually (reflective) or in groups as students solve problems (exploratory). This study looks at the relationship between these two types of small-group discourse and student-enacted cognitive demand.

This study looks at how students engage with tasks that were designed at four different cognitive demand levels using Webb’s depth of knowledge (DOK) framework. Ninety-seven grade 5 students …

Preschool Science: An Examination Of Classroom And Teacher Predictors, Donna S. Blaylock

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Science experiences during the preschool years is important because it helps build brain development in children, and improves school readiness. This exploratory study examined several characteristics of teachers and classrooms to see if any factors predicted time spent on science. Over 120 teachers participated, with teachers from Head Starts, university child development laboratories, home-based preschools, and other private preschool programs.

Findings suggest that preschool teachers are quite comfortable with teaching science, but science activities are reported to occur infrequently—one to three times a month. Teachers with higher levels of education and comfort levels with science are reported to be more …

Public Transportation Accessibility: Perceptions Of Riders With Disabilities In Utah, Cherissa R. Alldredge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Transportation plays an essential role in social inclusion and participation, subjective well-being, and overall quality of life. A lack of private transportation options may make individuals with disabilities more dependent on public transportation systems. Despite increased use, people with disabilities continue to report barriers accessing public transportation services. Interestingly, little is known about these barriers at the regional transportation district level. The purpose of this study was to better understand the barriers and perceived accessibility of the Utah Transit Authority’s (UTA) public transportation system for individuals with disabilities living within the UTA service area.

Using an online survey, data were …

Developing, Adopting, And Executing 100% Net-Renewable Electricity Resolutions At The Local Level, Emily E. Skill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the absence of national leadership on climate policy, municipalities are adopting resolutions to reduce their carbon footprint and transition to clean energy. However, what leads to successful adoption of these resolutions and how to effectively implement climate goals at the community level needs further exploration. To investigate these questions, this thesis examines the resolutions adopted in Salt Lake City, Park City, and Moab, Utah to transition to 100% renewable electricity by 2032. Data was collected through documents, such as city reports and newspapers, and interviews with government officials, city staff, and community members involved with the resolution process. A …

Power V. Threshold: Near-Channel Morphology Controls Sediment Rating Curve Shape In Coastal Redwood Watersheds, Adam Caspian Nebraska Fisher

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

River sediment is one of the most pervasive pollutants in the world. Excess amounts of fine sediment can reduce water quality, damage stream ecosystems, and harm aquatic life. Both natural and human-caused processes can add sediment to a river, such as tectonic uplift, landslides, and timber harvesting. Therefore, it is important to understand how fine sediment enters and moves through a rive system to inform policymakers and land-managers on effective ecosystem management.

In this study, we determined how the relationship between river flow and suspended sediment changed among watersheds along the North Coast of California. We found a rise in …

Measuring The Self-Efficacy Of Students Participating In Vex Robotics Competitions, Joseph S. Furse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Robotic competitions have become an increasingly popular educational tool to increase students’ interest and achievement in STEM. The largest and fastest growing of these is VEX Robotics Competitions (VRCs). Although millions of dollars of funding are allocated, and countless hours of effort are expended annually to provide students with the opportunity to compete in VRCs, little research has been done to investigate the educational impacts of participation in these competitions. One promising research framework in this area is to investigate the self-efficacy of students who participate in VRCs. Self-efficacy, or the beliefs one holds about one’s own abilities in a …

The Farm As Place In A Changing Climate: Capturing Women Farmers' Experiences In Idaho, United States And Victoria, Australia, Tagen Towsley Baker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In Australia and the US, women play a vital role in the agricultural sector. However, historically farmwomen’s contributions to agriculture as well as their individual knowledge and social resilience to stressors like climate and climate change have been unrecognized and rendered invisible. Drawing on interdisciplinary scholarship from geography and the humanities, this dissertation explores the farm as place in a changing climate, drawing on women farmers’ experiences, under three distinct themes: identity, place, and photography. The dissertation research includes three distinct parts. First, incorporating non-fiction writing and photography, I explore my agricultural and religious heritage, as well as familial connections …

Impact Of Myoglobin Oxygenation State On Color Stability Of Beef Steaks During Frozen Storage And Thawed Retail Display, Morgan Lee Henriott

Department of Animal Science: Dissertations, Theses, and Student Research

Meat color is the most important product characteristic that impacts consumer purchasing decisions. Therefore, the major objectives of this thesis were to determine the impact of myoglobin oxygenation level and frozen storage duration on both frozen and thawed beef color. USDA Choice strip loins (n = 36) were aged for 4 d or 20 d and cut into steaks. Steaks were randomly assigned to a myoglobin oxygenation level [deoxymyoglobin (DeOxy; immediately packaged), oxygenation (Oxy; oxygenated in air for 30 minutes), or high oxygenation (HiOxy; packaged for 24 h in 80% O₂)]. Steaks were then vacuum packaged in …

Memos And Mega Projects: Applying Planners’ Perceptions Of Their Software To A Framework For The Future Of Planning, Richard L. Davis

Master's Projects

Software powers the modern urban planning department. However, the majority of academic attention on software in the planning profession has focused on highly specialized land use models, ignoring the importance of common applications that most planners rely upon throughout their workdays. For example, email’s impact on planning has gone largely undiscussed in the literature despite its role as one of the most commonly used software by planners. This report has a twofold purpose: 1) create a protocol for interviewing planners about the software they use routinely; 2) synthesize needs and expectations of planners gathered during interviews with relevant literature on …

Where No War Has Gone Before: Outer Space And The Adequacy Of The Current Law Of Armed Conflict, Gemmo Bautista Fernandez

Journal of Space Law

No abstract provided.

Aspects Of Engaging Problem Contexts From Students' Perspectives, Tamara Kay Stark

Theses and Dissertations

Aspects of Engaging Problem Contexts From Students' PerspectivesTamara Kay Gandolph StarkDepartment of Mathematics Education, BYUMaster of ArtsToo many students have negative feelings towards mathematics which is causing them to disengage in their classrooms. This has led to student under-achievement. This study attempts to better understand how teachers can help students to reengage with mathematics by using more engaging contexts to develop mathematical content. The study began with the characteristics realistic, worthwhile, enjoyable or motivating as a framework for posing engaging problem contexts, which were synthesized from the current research literature. As students discussed what made contexts engaging, my understanding of …

Numerical Treatment Of Schrödinger’S Equation For One-Particle And Two-Particle Systems Using Matrix Method, Spatika Dasharati Iyengar

Doctoral Dissertations and Master's Theses

With an increased interest in accurately predicting aerothermal environments for planetary entry, recent researches have concentrated on developing high fidelity computational models using quantum-mechanical first principles. These calculations are dependent on solving the Schrödinger equation using molecular orbital theory techniques. They are either approximate solutions to actual equations or exact solutions to approximate equations. Exact solutions have not found favor due to the computational expense of the problem. Hence, a novel numerical approach is developed and tested here using linear algebraic matrix methods to enable precise solutions.

The finite-difference technique is used to cast the Time-Independent Schrödinger equation (TISE) in …

Probabilistic Framework For Behavior Characterization Of Traffic Participants Enabling Long Term Prediction, Jasprit Singh Gill

All Dissertations

This research aims at developing new methods that predict the behaviors of the human driven traffic participants to enable safe operation of autonomous vehicles in complex traffic environments. Autonomous vehicles are expected to operate amongst human driven conventional vehicles in the traffic at least for the next few decades. For safe navigation they will need to infer the intents as well as the behaviors of the human traffic participants using extrinsically observable information, so that their trajectories can be predicted for a time horizon long enough to do a predictive risk analysis and gracefully avert any risky situation. This research …

Scaling Up Automated Verification: A Case Study And A Formalization Ide For Building High Integrity Software, Daniel Thomas Welch

All Dissertations

Component-based software verification is a difficult challenge because developers must specify components formally and annotate implementations with suitable assertions that are amenable to automation. This research investigates the intrinsic complexity in this challenge using a component-based case study. Simultaneously, this work also seeks to minimize the extrinsic complexities of this challenge through the development and usage of a formalization integrated development environment (F-IDE) built for specifying, developing, and using verified reusable software components.

The first contribution is an F-IDE built to support formal specification and automated verification of object-based software for the integrated specification and programming language RESOLVE. The F-IDE …

High Dimensional Regression Techniques For Complex Data, Chase Joyner

All Dissertations

This dissertation focuses on developing mixed effects models for large scale and complex data. Our motivating applications involve areas where this data is common, including epidemiological studies, environmental sciences, and genetics. Two key attributes for most of the modeling techniques discussed in this dissertation are that they scale easily to large data and that they achieve full variable selection, which is often a desirable trait in mixed effects models. These attributes are primarily handled in two ways. The first is with carefully constructed latent variables that we introduce to make the posterior distributions more tractable. This allows a Markov chain …

Cavopulmonary Support For Failing Fontan Patients: Computational And In Vitro Assessment, Masoud Farahmand

All Dissertations

Congenital heart defects are responsible for the mortality of approximately 300,000 newborn each year. One study in 2010 estimated that over 2 million patients were living with congenital heart defects in the United States. Congenital heart defects have the highest hospitalization cost among other birth defect categories. The damage on the U.S economy in 2013 was estimated $6.1 billion. The most complex and severe form of these defects results in single ventricle physiology. Fortunately, over the last 50 years, these patients have been able to survive into adulthood as a result of three stages of surgeries culminating with Fontan operation. …

Typhoon Wind Modeling And Flutter Fragility Analysis Of Long-Span Bridges In Coastal Regions Of China, Genshen Fang

All Dissertations

Typhoon or hurricane or tropical cyclone, which is a large-scale air rotating system around a low atmospheric pressure center, frequently causing devastating economic loss and human casualties along coastal regions due to violent winds, heavy rainfall, massive storm surges, flash flooding or even landslides in mountainous areas. The coastal region of China, which is characterized by high population densities and well-developed cities, is always exposed to typhoon threats with 7~8 landfall typhoons every year since Western Pacific Basin is the most active typhoon basin on earth, accounting for almost one-third of global annual storms. With more long-span bridges are being …

Hiring Algorithms In The Canadian Private Sector: Examining The Promise Of Greater Workplace Equality, Connor Bildfell

Canadian Journal of Law and Technology

Private-sector employers are increasingly using hiring algorithms as a tool for screening job applicants, comparing qualifications, and ultimately determining which candidates should be selected. Within this context, hiring algorithms make no small promise: a hiring process that is not only more efficient and effective, but also more supportive of workplace equality. This promise rests largely on the notion that traditional human-driven models of hiring are beset by subjective biases and prejudices, whereas hiring algorithms, which are driven by hard data and objective evidence, can eliminate certain human biases and prejudices, thereby promoting workplace equality. But can hiring algorithms deliver on …

Teens In The Somali Diaspora: An Evaluative Program Study, Jennifer Skuza

Journal of Youth Development

Program evaluation is a critical part of program sustainability because evaluation can inform improvements and document impact. Here, 2 Minnesota organizations came together in partnership with the Somali American community to work toward a shared vision, which was to develop a new sustainable program that prepared refugee and immigrant youth for their educational and workforce futures while supporting their cultural way of being. This article shares the evaluative study of this program, which reached teens in the Somali diaspora living in Minnesota. The program team had a long-term interest in developing an evidence-based model to suit this special population; this …

Use Generalized Pareto Survival Models To Estimation Optimal Survival Time For Myocardial Infarction Patients, Iftikhar Abdulhameed Al Naqash, Marwah Ali Maklef

Journal of Economics and Administrative Sciences

The survival analysis is one of the modern methods of analysis that is based on the fact that the dependent variable represents time until the event concerned in the study. There are many survival models that deal with the impact of explanatory factors on the likelihood of survival, including the models proposed by the world, David Cox, one of the most important and common models of survival, where it consists of two functions, one of which is a parametric function that does not depend on the survival time and the other a nonparametric function that depends on times of survival, …

Cuinse₂ Nanotube Arrays For Efficient Solar Energy Conversion, Wipula Priya Liyanage, Manashi Nath

Chemistry Faculty Research & Creative Works

Highly uniform and vertically aligned p-type CuInSe₂ (CISe) nanotube arrays were fabricated through a unique protocol, incorporating confined electrodeposition on lithographically patterned nanoelectrodes. This protocol can be readily adapted to fabricate nanotube arrays of other photoabsorber and functional materials with precisely controllable design parameters. Ternary CISe nanotube arrays were electrodeposited congruently from a single electrolytic bath and the resulting nanotube arrays were studied through powder X-ray diffraction as well as elemental analysis which revealed compositional purity. Detailed photoelectrochemical (PEC) characterizations in a liquid junction cell were also carried out to investigate the photoconversion efficiency. It was observed that the …

Nash Bargaining Solution And Its Generalizations In Intellectual Property Litigation: Virnetx And An Analysis Of The Court's Decision, Rajeev R. Bhattacharya

Journal of International Business and Law

I explain the Nash Bargaining Solution and its generalizations. I discuss their pros and cons in the context of intellectual property litigation. I then provide a description and analysis of the Court's decision in VirnetX from this perspective.

Defining Boat Wake Impacts On Shoreline Stability Toward Management And Policy Solutions, Donna Marie Bilkovic, Molly M. Mitchell, Jennifer Davis, Julie Herman, Elizabeth Andrews, Angela King, Pamela Mason, Navid Tahvildari, Jana Davis, Rachel L. Dixon

Civil & Environmental Engineering Faculty Publications

Coastal economies are often supported by activities that rely on commercial or recreational vessels to move people or goods, such as shipping, transportation, cruising, and fishing. Unintentionally, frequent or intense vessel traffic can contribute to erosion of coastlines; this can be particularly evident in sheltered systems where shoreline erosion should be minimal in the absence of boat waves. We reviewed the state of the science of known effects of boat waves on shoreline stability, examined data on erosion, turbidity, and shoreline armoring patterns for evidence of a response to boat waves in Chesapeake Bay, and reviewed existing management and policy …

A Transformative Concept: From Data Being Passive Objects To Data Being Active Subjects, Hans-Peter Plag, Shelley-Ann Jules-Plag

OES Faculty Publications

The exploitation of potential societal benefits of Earth observations is hampered by users having to engage in often tedious processes to discover data and extract information and knowledge. A concept is introduced for a transition from the current perception of data as passive objects (DPO) to a new perception of data as active subjects (DAS). This transition would greatly increase data usage and exploitation, and support the extraction of knowledge from data products. Enabling the data subjects to actively reach out to potential users would revolutionize data dissemination and sharing and facilitate collaboration in user communities. The three core elements …

Growth Phase Proteomics Of The Heterotrophic Marine Bacterium Ruegeria Pomeroyi, Dasha Krayushkina, Emma Timmins-Schiffman, Jessica Faux, Damon H. May, Michael Riffle, H. Rodger Harvey, Brook L. Nunn

OES Faculty Publications

The heterotrophic marine bacterium, Ruegeria pomeroyi, was experimentally cultured under environmentally realistic carbon conditions and with a tracer-level addition of ¹³C-labeled leucine to track bacterial protein biosynthesis through growth phases. A combination of methods allowed observation of real-time bacterial protein production to understand metabolic priorities through the different growth phases. Over 2000 proteins were identified in each experimental culture from exponential and stationary growth phases. Within two hours of the ¹³C-labeled leucine addition, R. pomeroyi significantly assimilated the newly encountered substrate into new proteins. This dataset provides a fundamental baseline for understanding growth phase differences in molecular …

Temporal And Spatial Scales Of Correlation In Marine Phytoplankton Communities, A. M. Kuhn, S. Dutkiewicz, O. Jahn, Sophie Clayton, T. A. Rynearson, M. R. Mazloff, A. D. Barton

OES Faculty Publications

Ocean circulation shapes marine phytoplankton communities by setting environmental conditions and dispersing organisms. In addition, processes acting on the water column (e.g., heat fluxes and mixing) affect the community structure by modulating environmental variables that determine in situ growth and loss rates. Understanding the scales over which phytoplankton communities vary in time and space is key to elucidate the relative contributions of local processes and ocean circulation on phytoplankton distributions. Using a global ocean ecosystem model, we quantify temporal and spatial correlation scales for phytoplankton phenotypes with diverse functional traits and cell sizes. Through this analysis, we address these questions: …

Estimating The Reliability Function Of Kumaraswamy Distribution Data, Qutaiba N. Nayef Al-Qazaz, Ruqaya Raad Hussein

Journal of Economics and Administrative Sciences

The aim of this study is to estimate the parameters and reliability function for kumaraswamy distribution of this two positive parameter (a,b > 0), which is a continuous probability that has many characterstics with the beta distribution with extra advantages. The shape of the function for this distribution and the most important characterstics are explained and estimated the two parameter (a,b) and the reliability function for this distribution by using the maximum likelihood method (MLE) and Bayes methods. simulation experiments are conducts to explain the behaviour of the estimation methods for different sizes depending on the mean squared error criterion the …

Inequality And The Social Compact In Singapore: Macro Trends Versus Lived Realities, Nathan Peng

Research Collection School of Social Sciences

This paper provides an overview of Singapore’s inequality since 2000. Upon examining empirical indicators reflecting different aspects of inequality, there seems to be a divergence between largely stable macro-level trends and “felt” inequality experienced by citizens. While the empirical record reflects fairly stable income, wealth, consumption and intergenerational inequality, other data show how educational performance and sense of belonging are continuously tied to socio-economic position. Juxtaposing these insights against a qualitative analysis of Singapore’s meritocracy, the social and political ferment on the issue of inequality in 2018—with heightened discourses among both elites and the public—makes sense against a backdrop of …

Developing A Theoretical Framework For Visualization-Based Pedagogical Content Knowledge (V-Pck) Based On Middle School Teachers’ Views And Uses Of Visualizations As An Instructional Tool, Jacqueline Samuel

Dissertations

Visualizations is a categorical term that is often used to provide visual imagery to the communication of processes, concepts, exemplar phenomena, and general information. Objects such as graphs, tables, diagrams, animations, and pictures fall in this category. Existing literature focuses primarily on the use of visualizations in the science field at the high school level, collegiate levels, and in pre-service teacher education programs. A gap in the literature exists which examines how science teachers at the middle school level perceive and use visualizations as instructional components in the classroom. The purpose of this study was to examine science teachers views …