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A Cross Section Measurement Of Muon Neutrino-Induced Charged-Current Coherent Positive Pion Production On Argon With The Microboone Detector, Zachary Glenn Randell Williams

Physics Dissertations - Archive

Neutrino-induced charged-current coherent pion production is an important channel for the study of neutrino-nucleus interactions. It is both a dangerous background for $\nu_{e}$ oscillation experiments, and a critical component required for precise understanding of neutrino-nucleus pion production in general. This work performed a search for $\nu_{\mu}$-induced charged-current (CC) coherent pion production on argon in MicroBooNE from Fermilab's Booster Neutrino Beamline (BNB), which produces $\nu_{\mu}$ with a mean energy of 0.823 GeV. A flux-integrated cross section measurement was made for this channel, and was found to be: $\sigma(\nu_{\mu} + Ar \rightarrow \mu^{-} + \pi^{+} + Ar) = 1.12 \pm 0.253 \textrm{(stat.)} …

2022 Commencement Program, Columbia College Chicago

Commencement Programs

The commencement program of the 2022 Columbia College Chicago graduation ceremonies.

Assessing Dietary Nutrient Adequacy And The Effects Of Season-Long Training On Body Composition And Metabolic Rates Of Men's Division I Collegiate Basketball Player, Morgan M. Nishisaka

Master's Theses

The success of performance in basketball may rely on both optimal body composition and nutrient intake. To our knowledge this is the first study to examine dietary intake adequacy and season-long effects on body composition and metabolism. The purpose of this study was to examine seasonal changes in body composition (BC), resting metabolic rate (RMR) and respiratory quotient (RQ), while also examining the dietary intake adequacy of NCAA DI male basketball players. BC, RMR and RQ were assessed during pre-season, in-season, and post-season (September, December, and March), while dietary assessment was collected in September and February. Results of this study …

Food Security And Dietary Diversity Among Conventional And Organic Tea-Smallholders In Central And Southern Sri Lanka, Nethmi Bathige

Geography Honors Projects

In Sri Lanka, smallholder tea producers grow 70 percent of the country’s tea and bring in significant export earnings. However, when the country moved towards a more liberalized economy in the 1970s, growing cash crops such as tea for exports increased. As a result, there was a cut-back in food crop agriculture as farmers made space to grow more commercial crops. This research treats tea smallholder households as a unit of study. It looks at how economic status (average income and wealth rankings), level of crop diversity, and method of tea farming (organic or conventional) have influenced food security and …

Electrically Conductive Bearing Adapter Polymer Pad For Use In Freight Railcar Service Applications, Jesse M. Aguilera

Theses and Dissertations

Many freight railcars rest on polymer adapter pads made of injection-molded Thermoplastic Polyurethane (TPU) polymers which feature two copper studs to provide electrical conductivity through the adapter pads, which power onboard systems. In service, pads experience impact and cyclic loading, resulting in wear and plastic compression of the copper studs. This leads to signal interruptions and periodic replacement of the polymer pads, which results in downtime due to maintenance and reduced reliability since pad failure is unpredictable. These limitations in the current design are the impetus to create an electrically conductive polymer adapter pad that does not rely on the …

Alice And Me, Myself, Little David, And The Right Side Of My Brain, David Cohen

Theses and Dissertations

This is an honest and open memoir of David Cohen’s life as it fits into the 13 years of therapy with Alice. The story is of David learning about his inner child and making a deal with him through non-dominant-hand writing. The result is for David to quit drinking and for the adult part of him to finally take control of his life. The narrative reviews key experiences of his past that influence the current issues.

The background research includes concepts from five key books that support Alice, the therapist’s, theories that have over 30 years of experience have developed …

Paralinguistic And Rhetorical Capabilities Of Emojis In Marketing Communication, Jacob Christopher Almaguer

Theses and Dissertations

Consumers and social media marketers have over 3,000 emojis at their fingertips. Despite the popularity of emojis on social media, marketing research on emojis remains limited. Extant marketing research on emojis that does exist primarily focuses on the emotional and reinforcement capabilities, a remnant of the limitations of the emoticon ancestor, and largely ignores the additional paralinguistic and rhetorical potential of emojis. In this dissertation, emojis as a paralanguage are explored with a particular focus on the creation of meaning on social media (Essay 1), and emojis as a full (Essay 2) and partial (Essay 3) substitute for text in …

A Critical Content Analysis: Representation Of The Experiences Of Emergent Bilingual Mexican American Children In Literature, Cynthia Villarreal Cantu

Theses and Dissertations

This critical content analysis utilized the children's books Efrén Divided, The Distance Between Us: Young Readers Edition, and They Call Me Güero: A Border Kid’s Poems. As I read the literature, I documented how children's literature can accurately influence the representation of emergent bilingual Mexican American children in literature. This qualitative study demonstrated the need for authentic children’s literature that embraces a culturally sustaining pedagogy (CSP). After analyzing the books, I realized that the power of literacy and language could help students form connections to their identity, agency, and power. Educators, administrators, and the community can include literacy in the …

Emergency Preparedness: Perceptions Of People With Disabilities, Lidia Adamina Fonseca

Theses and Dissertations

The prevalence of emergencies and disasters has increased over the past decade which has caused cities, states and countries to routinely develop emergency preparedness and management plans (Turk, 2016). Although these demands have increased, individuals with disabilities have been less represented in the development of the plans (Timmons, 2017; Turk, 2016). According to The World Bank Disaster Risk Management Report (2020), disasters (e.g., infectious disease outbreaks such as COVID-19, hurricanes, earthquakes, industrial accidents.) and post-disaster consequences have increased over recent years.

Although individuals with disabilities have become more aware of emergency preparedness and its importance, researchers have noted that there …

Parental Engagement Of Families Living In Colonias: Engaging In Their Children’S Education, Eugenia Hernandez-Moreno

Theses and Dissertations

Parental engagement has been identified as a factor that influences the academic achievement of elementary children. Colonias are low income neighborhoods who lack the infrastructure and whose residents struggle with the accessibility of every day necessities to survive. Parents living in colonias are faced with unique challenges that influence the extent of their parental engagement in their children’s education. The purpose of this study is to examine the extent of parental engagement of families living in colonias in elementary children’s education in a school district in South Texas. Interviews, observations, and documents will be analyzed to determine the different factors …

Pláticas With Women In The Rio Grande Valley: Defining U.S. Citizenship On My Own Terms Using Chicana Feminist Epistemologies, Ana Lopez

Theses and Dissertations

This study addresses common assumptions about women of the borderlands while embracing a transformative consciousness in understanding, making, and reclaiming the meaning of citizenship for Mexican American women from the Rio Grande Valley. This critical ethnography recognizes Chicana Feminist epistemologies as a form of knowledge. Therefore, this space is dedicated to learn, explore, and discuss how Chicana Feminist epistemologies (CFE) shape and support citizenship among young Mexican American high school graduates from the Rio Grande Valley? Based on Gloria’s Anzaldua’s (1987) Borderlands/La Frontera, Rio Grande Valley is a geographical, historical, and symbolic piece to this study; at the same …

Examination Of 21st Century Organization Development: An Ethnography Of A Distance Learning Support Department At A Hispanic Serving Institution Of Higher Education, Bobbie Myatt

Theses and Dissertations

This study used an ethnographic lens to examine the historic organizational development of a distance education support department within a Hispanic-serving institution of higher education. The Borderlands University (BU; pseudonym) Online Teaching, Learning, and Technology Center (OTLT) is representative of the structure and culture of a successful distance education support department for the 21st century. Through qualitative ethnography, this research study examined the development of cultural and structural components necessary for the success of this organization. This includes the internal community of support departments housed within institutions of higher education. Technologically raised generations emerging from traditional schools, “digital natives,” are …

Self-Diverting Nanofluid In-Situ Gelled Acid For Matrix Acidizing Applications In Carbonate Formations, Javier Alejandro Perez

Theses and Dissertations

The main purpose of this project is to develop a nanofluid system that would help to divert the injected acid from the main flow regime into a relatively lower permeability zone and being able to dissolve the rock significantly. The system is meant to successfully create acidic gel in-situ after injecting the fluid in solution. It is expected that by altering either pH, temperature or amount of reactants, the viscosity of the fluid can be controlled so that the gel can be broken at a desired time.

Harvester Ant (Pogonomyrmex Sp.) Seed Preferences And Distribution In A Suburban Setting, Lilly V. Elliott

Theses and Dissertations

Harvester ants (Pogonomyrmex sp.) are omnivorous ants native to Texas and are the main food source for the threatened Texas Horned Lizard (Phrynosoma cornutum). Little research has been conducted on harvester ants in the Lower Rio Grande Valley (LRGV) and their interactions with their environment. For this purpose, a variety of experiments were conducted to better understand these interactions and preferences. In CHAPTER I, suburban harvester ants were exposed commonly used cover crop seeds in the LRGV and inoculated seeds via seed depots over the course of 24 hours. We found that harvester ants do …

Verification In Generalizations Of The 2-Handed Assembly Model, David Caballero

Theses and Dissertations

Algorithmic Self Assembly is a well studied field in theoretical computer science motivated by the analogous real world phenomenon of DNA self assembly, as well as the emergence of nanoscale technology. Abstract mathematical models of self assembly such as the Two Handed Assembly model (2HAM) allow us to formally study the computational capabilities of self assembly. The 2HAM is one of the most thoroughly studied models of self assembly, and thus in this paper we study generalizations of this model. The Staged Tile Assembly model captures the behavior of being able to separate assembly processes and …

Discourses Surrounding Specific Learning Disability In Reading: An Exploration Across Special Education Policies, Martha M. Briseno

Theses and Dissertations

Individuals with disabilities have been subjected to deficit models that have led to unfair treatment, exclusion, and an unfitting education for years. Historical factors have informed policies toward the educational treatment and rights of individuals with disabilities in the United States since the 1600s. Before the enactment of The Education for All Handicapped Children Act (EAHCA) in 1975, it was common practice for children with disabilities to be segregated, excluded, and given an unsuitable education in comparison to their nondisabled counterparts. Throughout history, the language used in legislation and educational documents have compartmentalized students with disabilities based on …

Exploring How Latinx Gender And Sexually Diverse Youth In The Rio Grande Valley Experience And Confront Homophobia: A Qualitative Study Of Alumni Community Leaders/Advocates, Heraclio Flores Jr.

Theses and Dissertations

Framed by queer theory, this qualitative study seeks to better understand the unique experiences of homophobia that occur amongst Latinx gender and sexually diverse youth (GDSY) in the Rio Grande Valley (RGV). Latinx GSDY in the Rio Grande Valley are less likely to be in schools that adopt affirming policies and are therefore more likely to experience homophobia. It is also likely that their social, emotional, physical, and academic wellbeing are impacted negatively. The study collected written journal responses from nine Latinx gender and sexually diverse alumni of RGV schools (including the researcher) that presently serve as community leaders …

Exploring Parent Perspective On Classroom Placements Of Twins, Bereniz Delgadillo

Theses and Dissertations

The early childhood years are crucial for children’s cognitive development and school achievement. Experiences during these years are also influential for their social and emotional development and personality growth. During the early years children benefit from experiences that impact all areas of development. The focus of this literature review is to explore the impact of early school placement. Parents and early childhood educators need to be aware of consequences regarding the impact of school and classroom placement of twins. In addition, parents’ and school staff’s perceptions regarding twin classroom placement in South Texas will also be reviewed. …

Iterated Rascal Triangles, Jena M. Gregory

Theses and Dissertations

We introduce a sequence of number triangles, {Ri} i=0 infty , such that the entries of each share a common generalized recurrence relation. R1 is the Rascal triangle and as i grows large, Ri becomes Pascal's triangle. For all i, we provide a combinatorial interpretation and find closed-term formulas for the entries of Ri . Our proofs rely on generating functions and other combinatorial arguments.

Pentagonal Tilings Of The Plane, Ariana T. Hinojosa

Theses and Dissertations

Tilings are mathematical objects that allow us to use geometry to visualize interaction between objects as well as to create artistic realization of mathematical objects in the plane and in the space.

We will focus on tilings of the plane that use only one type of convex pentagonal tile each, the pentagonal tilings. There are fifteen types of pentagonal tiles, with each containing their own set of restrictions. The main result of this thesis is an interactive realization of all fifteen types of pentagonal tiles using GeoGebra.

Computational Complexity In Tile Self-Assembly, Timothy Gomez

Theses and Dissertations

One of the most fundamental and well-studied problems in Tile Self-Assembly is the Unique Assembly Verification (UAV) problem. This algorithmic problem asks whether a given tile system uniquely assembles a specific assembly. The complexity of this problem in the 2-Handed Assembly Model (2HAM) at a constant temperature is a long-standing open problem since the model was introduced. Previously, only membership in the class coNP was known and that the problem is in P if the temperature is one (τ = 1). The problem is known to be hard for many generalizations of the model, such as allowing one …

Non-Negative Discriminative Data Analytics, Md Imrul Kaish

Theses and Dissertations

Due to advancements in data acquisition techniques, collecting datasets representing samples from multi-views has become more common recently (Jia et al. 2019). For instance, in genomics, a lymphoma patient’s dataset may include data on gene expression, single nucleotide polymorphism (SNP), and array Comparative genomic hybridization (aCGH) measurements. Learning from multiple views about the same objective, in general, obtains a better understanding of the hidden patterns of the data compared to learning from a single view data. Most of the existing multi-view learning techniques such as canonical correlation analysis (Hotelling et al. 1936) and multi-view support vector machine (Farquhar et …

Nanostructured Materials For Biomedical Applications, Silverio Lopez

Theses and Dissertations

Nanotechnology has been used in an increasing number of applications in biochemistry and molecular biology. Compared to bulk materials, nanoscale materials offer a variety of advantages in applications due to an increased surface-to-volume ratio of the reactants. The unique properties of nanostructured materials and their properties such as stability, reactivity, magnetic response, pressure discharge performance and biocompatibility depend on particle size and shape. This work focuses on a nanoenergetic material composed of Aluminum (Al), Copper II oxide (CuO), and Iodine (I) pentoxide (I2O5), and the biomedical application of nanoscale dextran-coated magnetite (Fe3O4), which was produced using microfluidics to tune particle …

A Narrative Study Of Secondary After-School Robotics Experiences In The Rio Grande Valley: Empowering Students' Academic And Life Skills Through A Constructivist Approach, Lorena Cristina Lopez

Theses and Dissertations

This narrative study investigated the experiences of three Hispanic students in South Texas who participated in after-school robotics programs in secondary school and discover the role these experiences had on their academic and life skills. Data were collected through individual semi-structured interviews with one female participant and two male participants in the Rio Grande Valley. The data were analyzed using the NVivo software to identify patterns and themes amongst the participants followed by a narrative analysis of the participants’ stories, which was guided by the emerging themes.

The findings showed that the secondary after-school robotics programs played a role in …

Total Synthesis Of Mansouramycin A, Abigail M. Zepeda

Theses and Dissertations

In 2009 bioactive compounds from marine Streptomyces species was isolated which resulted in deriving four isoquinoline-quinone alkaloids known as Mansouramycins A-D. There have been reports that there are 36 non-small cancer cells against cytotoxicity in Mansouramycins A-C in lung cancer, breast cancer, melanoma, and prostate cancer cells. Reports that have conducted total syntheses were all specific to a single compound only Mansouramycin A and D. However, in precedent methods, to obtain the derivatives with different substituents are limited when the substituents are on the fused-pyridine ring. Thus, a develop a systematic synthetic methods of isoquinoline-quinones, which are to be able …

Hydrologic Modeling Study To Determine Hydrologic Impact Of Resacas On The Lower Laguna Madre Watershed, Antonio L. Reyna

Theses and Dissertations

During a high intensity storm events, a series of catastrophic events occur. These catastrophic events include flooding and destruction of infrastructure. Engineers have determined a method to design for high intensity storms based off hydrologic analysis of previous storms. With this data engineers can determine the outflow of major rivers and streams that may impact infrastructure. By determining the watershed engineers can predict the flow of the water and as well as the location of the outfall. In the Rio Grande Valley, water quality is very important because after rain events stormwater from cities is carried out towards the Laguna …

Acoustic And Perceptual Effects Of Mask-Wearing On Voice And Communication In Healthcare Practitioners, Astrid C. Ortiz Garcia

Theses and Dissertations

The purpose of the present study aims to determine the perceptual and acoustic voice effects experienced by healthcare practitioners following prolonged use of face masks during the COVID-19 pandemic. A total of 19 participants were recruited and divided into control and experimental groups. Of these 19, 10 were assigned to the experimental group (E) which required participants to engage in increasing their fluid intake by 1 liter per day, while the remaining 9 were part of the control group (C) and had no additional instructions.

To gather perceptual data, a survey was created and conducted via Qualtrics software, and addressed …

Mathematical And Statistical Modeling With Deep Neural Networks, Albert Romero

Theses and Dissertations

General adversarial networks (GANs) are a form of machine learning that includes two neural networks competing in a zero-sum game. One network produces artificial, while the other tries to distinguish artificial data from real. The Wasserstein general adversarial network with gradient penalty (WGAN-GP) variant of this technique is used to produce solutions for ordinary and partial differential equations.

School Leadership That Impacts Student Achievement In Blue Ribbon Schools In The Rio Grande Valley Of Texas, Sonya Y. Rodriguez

Theses and Dissertations

The purpose of this qualitative multiple case study was to determine the leadership actions, behaviors, and practices of effective school leaders in Blue Ribbon Schools in South Texas who resulted in the schools receiving the distinction by the U. S. Department of Education of being a Blue Ribbon School. Data were collected through a series of interviews with principals and teachers from the selected sample of Blue Ribbon Schools in the Rio Grande Valley in South Texas. The interviews were audio recorded, transcribed, and analyzed using inductive coding to determine themes.

Blockchain Value Creation Logics And Financial Returns, Daniel Narh Treku

Theses and Dissertations

With its complexities and portfolio-nature, the advent of blockchain technology presents several use cases to stakeholders for business value appropriation and financial gains. This 3-essay dissertation focuses on three exemplars and research approaches to understanding the value creation logics of blockchain technology for financial gains. The first essay is a conceptual piece that explores five main affordances of blockchain technology and how these can be actualized and assimilated for business value. Based on the analysis of literature findings, an Affordance-Experimentation-Actualization-Assimilation (AEAA) model is proposed. The model suggests five affordance-to-assimilation value chains and eight value interdependencies that firms can leverage to …