Digital Commons Network^™

Sustainable Cities: Life-Cycle Cost Analysis Of Integrating Piezoelectric Harvesters Into Roadways, Heba Mohamed Gaber

Theses and Dissertations

Energy is essential in our modern era. Because of the increasing electricity consumption, sustainable and Renewable energy became a necessary global approach to fill the gap of the ongoing energy shortage in addition to the climate change crisis due to using conventional ways for energy production. Renewable energy is a global approach that has achieved great accomplishments during the last decades and is gradually increasing. Energy harvesting is considered one of the main resources for renewable energy. Energy harvesting from the roadways is an ingenious horizon for sustainable, clean, and renewable energy generation. Harvesting energy from the roadways by using …

The Quiet And Other Fantastical Tales, Emily Nicole Cerda

Theses and Dissertations

This thesis briefly discusses the genres and subgenres of speculative fiction—focusing on fantasy, horror, and science fiction—and is primarily a short story collection that also includes a few novel chapters. The critical introduction delves into the present and overly complex subgenre categorization methods, how and why new subgenres are created, and provides simple definitions for the main genres of speculative fiction and fantasy subgenres.

The subgenres that will be discussed through either a short story, novel chapter(s), or definition include, but are not limited to: fairytales, portal fantasy, paranormal romance, dark fantasy, historical fantasy, magical realism, epic fantasy, mythic fiction, …

Electrolysis Degradation Of Cyanuric Acid In Wastewater At Cu/Go Cathodes, Chioma Chinwe Nwakanobi

Theses and Dissertations

This work evaluates the development of electrochemical processes for the oxidative degradation of persistent organic chemicals in waste waters, specifically the oxidation of cyanuric acid in the presence of NaCl at Cu/GO cathodes and Ti anodes. The experiment used a graphene oxide doped copper mesh cathode to examine different concentrations of cyanuric acid (30 mg/L, 40 mg/L, and 50 mg/L) and various concentrations of NaCl electrolyte (0.007mol/L, 0.03mol/L, 0.07mol/L, 0.1mol/L, and 0.2mol/L). In addition, the effect of pH (2, 4, 6, and 8), and applied current (0.200A, 0.150A and 0.100A) were studied. The Cu/GO electrode played a central role in …

Private Ethereum Blockchain Implementation And Its Security Features For Smart Home Iot, Hasibul Grande Alam

Theses and Dissertations

The security and privacy of IoT devices have become primary concerns as smart home networks are connected to the internet. Ethereum blockchain can be a solution to mitigate or prevent attacks – sniffing attacks, malware attacks, Eavesdropping, and Distributed Denial of Services (DDoS) attacks. Deploying Ethereum in resource constraint IoT devices is challenging due to resultant energy consumption, computational overhead, and delay. We adopted smart home as a case study to examine our methodology as a model for general IoT applications. This thesis work presents the implementation of private Ethereum blockchain that is optimized and installable on smart home IoT. …

Chemical Investigation Of Dichloromethane Extract Of Aloe Vera Peels: An Agricultural Waste, Nazmul Huda

Theses and Dissertations

Aloe barbadensis Miller, commonly called Aloe Vera, is a widely popular succulent plant species cultivated across subtropical regions worldwide from India to the Tex-Mex border. Besides its historical uses, Aloe juice has garnered attention as a potential remedy for various ailments, particularly in treating various skin conditions and facilitating wound recovery, including obesity, diabetes, hepatitis, Crohn's disease, and ulcerative colitis. Regrettably, the agricultural practice following sap extraction involves discarding Aloe vera peels, constituting agricultural waste. As part of our continuous research on extraction, isolation, separation, and spectral characterization of value-added chemicals present in waste botanicals herein, …

Intellibeehive, Christian Ivan Narcia-Macias

Theses and Dissertations

Utilizing computer vision and the latest technological advancements, in this study, we developed a honey bee monitoring system that aims to enhance our understanding of Colony Collapse Disorder, honey bee behavior, population decline, and overall hive health. The system is positioned at the hive entrance providing real-time data, enabling beekeepers to closely monitor the hive's activity and health through an account-based website. Using machine learning, our monitoring system can accurately track honey bees, monitor pollen-gathering activity, and detect Varroa mites, all without causing any disruption to the honey bees. Moreover, we have ensured that the development of this monitoring system …

Overexpression Of Ubtf Correlates With Aggressive Phenotypes Of Prostate Cancer Cells, Guillermo Andres Saldana

Theses and Dissertations

Prostate cancer (PrCa) is one of the most common malignancies in men globally and the second leading cause of cancer associated deaths in developed countries. Accumulating evidence have demonstrated involvement of various molecular and cellular factors in the development, progression and chemoresistance of PrCa and many of them were successfully established as potential molecular targets for therapy. Despite these advancements, the underlying mechanisms of PrCa occurrence is still unclear, which limits the diagnosis and therapy. Therefore, it is an urgent need to discover potential molecular targets which can be used in rational design of new strategies for the prevention and …

Laser Assisted Direct Writing Of Liquid Metal For Microprinting Applications, Olga Vargas Cruz

Theses and Dissertations

This paper presents a research study for potential printing of a Liquid Metal (LM) Eutectic Gallium Indium alloy (EGaIn) through the applications of the innovative additive manufacturing technology LIFT (Laser Induced Forward Transfer). LIFT is a precise printing technology that allows to create small, detailed printing. The liquid metal in study, EGaIn, has demonstrated great potential for microelectronics applications due to its minimum toxicity and high conductivity. Throughout this research different printing parameters are studied to comprehend the behavior of EGaIn printing with LIFT technique, these include laser energy, laser pulse, receiver material substrate, donor layer thickness, and …

An Empirical Study Of The Relationship Between Board Chairperson Activism, Board Gender Diversity, Board Gender Inclusion, And Firm Performance, Phyu Phyu Aung Myint

Theses and Dissertations

This dissertation empirically examined the effect of board chairperson activism and board chairperson power on board gender diversity, board gender inclusion, and firm performance using a sample of boards of Fortune 500 firms. Board chairperson activism, in this dissertation context, refers to board chairpersons taking actions such as speaking out on, advocating for, or actively supporting gender equality or women leadership in business. Board gender diversity refers to the gender heterogeneity of directors in the boards whereas board gender inclusion refers to the extent to which women directors are given opportunity to participate and contribute to …

The Importance Of Emotional Intelligence And Leadership Development In Principal Efficacy, Lorine Olivarez Bazan

Theses and Dissertations

Recently, public schools have seen an increase in obstacles and challenges in the wake of the COVID-19 pandemic, and school leaders have had to pivot and adjust to meet these ever-changing demands (McLeod & Dulsky, 2021). Principals in today’s schools have had to discover new and innovative ways to successfully lead, motivate and support their school communities. This emerging leadership includes the leader’s ability to utilize emotional intelligence and leadership skills effectively and intentionally.

The purpose of this qualitative study was to take a deeper look at investigating the school principal’s utilization of emotional intelligence and effective leadership skills. This …

A Psychometric Validation Of The Spanish Translation Of The Coping Inventory In A Latinx Population, Daniela Chavez

Theses and Dissertations

Research efforts to comprehend coping strategies in response to stress within the Latinx/Hispanic community have been limited. The inability to effectively cope with stress can lead to physical and mental health problems in adults. This study aims to test the psychometric properties of the translated version of a recently developed coping assessment, “The Coping Inventory,” to evaluate its validity among Spanish-speaking Latinx individuals. The results indicate that The Coping Inventory demonstrates reliability and validity among this population. These findings can enhance the measurement of coping strategies within the Latinx/Hispanic community, potentially resulting in improved …

Robust And Uncertainty-Aware Image Classification Using Bayesian Vision Transformer Model, Fazlur Rahman Bin Karim

Theses and Dissertations

Transformer Neural Networks have emerged as the predominant architecture for addressing a wide range of Natural Language Processing (NLP) applications such as machine translation, speech recognition, sentiment analysis, text anomaly detection, etc. This noteworthy achievement of Transformer Neural Networks in the NLP field has sparked a growing interest in integrating and utilizing Transformer models in computer vision tasks. The Vision Transformer (ViT) model efficiently captures long-range dependencies by employing a self-attention mechanism to transform different image data into meaningful, significant representations. Recently, the Vision Transformer (ViT) has exhibited incredible performance in solving image classification problems by utilizing ViT models, thereby …

Comparing Socioeconomic Status To Educational Diagnosis Of Serious Emotional Disturbances: A Linear Analysis Of Texas Data, Cristina Rangel

Theses and Dissertations

This dissertation was prepared to determine if a correlation existed between a student’s poverty level and an educational diagnosis of serious emotional disturbance. I hypothesize that students at or under the United States’ definition of poverty are more likely to exhibit signs and symptoms of a serious emotional disturbance and therefore be diagnosed and placed in special education. Both federal data (i.e., poverty levels) and Texas data (i.e., dx of SED) were compared to determine correlation and directionality. TEA combines districts into 20 regions. Special education placement data is publicly available on State databases. Federal poverty levels are available …

A Qualitative Case Study: Exploring Elementary Principals’ And Teachers’ Perceptions Of Teacher Leadership, Cathy De Leon

Theses and Dissertations

This qualitative case study examined the perceptions of one principal and 10 teachers from a school district in the Rio Grande Valley regarding how leadership is distributed in their schools through the lens of distributed leadership. This study contributes to the small body of literature regarding teacher leadership to foster dialogue and potentially provide opportunities for teachers to take on leadership roles. Recently, the expectations for schools have increased to the extent that leaders are now expected to ensure all students are learning at prominent levels. Today’s public-school principals may benefit from the support of teacher leaders. Results of …

Examining Social Factors Influencing Latino Students' Academic Learning In Rio Grande Valley Via A Quantitative Design, David T. Smith

Theses and Dissertations

This research study aimed to examine the social factors that could influence the academic learning experiences of Latino college students. Hispanic students are pursuing post-secondary degrees at a higher rate than in previous years. Many Hispanics represent their respective family members as the first members of their respective families to attend college (Trevino & DeFreitas, 2014). The academic achievement of Latino college students is becoming a major concern in the United States due to their growing population and special needs (Trevino & DeFreitas, 2014).

It is imperative to examine the social factors that could affect the academic learning experiences of …

The Relationship Between The Volume And Complexity Of Books Read Based On Accelerated Reader Assessment Data And The 5th-Grade Students’ Reading Achievement Scores, Glenda Edna Rodriguez

Theses and Dissertations

This study examined the reading performance data for a grade level of fifth graders using the Web-based Accelerated Reader assessment program. Based solely on student archival data, this study focused on the hypothesized relationship between the volume and complexity of quizzes taken from books read using the Accelerated Reader assessment program and academic performance on the state’s standardized reading achievement portion of the State of Texas Assessments of Academic Readiness (STAAR) test. An independent sample t – test was also performed to investigate if there were any differences between the gender, language, and socioeconomic status of the subgroup …

Process-Structure-Property Relationships Of Nanofibers For Biomedical Applications, Dipasree Bhowmick

Theses and Dissertations

This thesis explores the fabrication, characterization, and applications of nanofiber membranes utilizing Forcespinning® technology. Two distinct nanofiber systems were developed and evaluated, one focusing on pH-responsive Eudragit-baicalin loaded nanofibrous membranes for wound healing and the second one on thermo-responsive nanofiber-hydrogel (PNIPAAm) systems for biosensing applications, specifically dopamine detection. In the first project, nanofiber membranes loaded with Eudragit and baicalin demonstrated superior antibacterial properties against both gram-negative (E. coli) and gram-positive (B. meg) bacteria. Additionally, these membranes exhibited antioxidant properties and enhanced cell proliferation of 3TT cells, making them promising candidates for wound healing dressings. In the second project, a …

Analyzing How Resiliency, Family Support, And The College Assistance Migrant Program (Camp) Contribute To Latina/O/X Migrant Farmworker Students' Ability At A South Texas Hsi To Continue Into The Second Year Of Study And To Degree Completion, Angelica Yvette Gonzalez

Theses and Dissertations

The purpose of the study is to identify the primary difficulties Latina/o/x migrant farmworker students face compared to non-migrant farmworker students regarding completing higher education and how they can overcome those barriers. Latina/o/x migrant farmworker students experience educational inequity that affects their potential to continue into higher education successfully. Although there is extensive research that analyzes the CAMP program effectiveness, migrant farm-worker students experiences, and the difficulties faced by migrant farmworker students in education, there is a gap in the literature that focuses on migrant farmworker students and their success in …

A Narrative Analysis Of The January 6th Capitol Riot: Melodramatic Political Discourse, Joel Corte

Theses and Dissertations

The riot at the United States Capitol by supporters of Donald Trump shocked the American political system and represented contemporary politics’ shift toward more reactionary, populist politics. Attempts to explain the events of January 6th, 2021, have focused on the role of conspiracy theories, white supremacy, toxic masculinity, and the violation of norms. This thesis argues that January 6th can be explained by a case study of narrative and the style of discourse. More specifically, I conducted a qualitative narrative analysis of Trump’s election fraud narrative in the 2020 election by completing a close reading of his campaign …

Attitudes Towards Mathematics Of Developmental Mathematics Students In A Community College, Benjamin Ortiz

Theses and Dissertations

Reformations to developmental mathematics aim to remove barriers for students entering higher education. Challenges like costly multi-course sequences and high failure rates prohibit students’ access to college-level math courses and prevent degree or certification completion. Understanding factors that foster student success is critical to increase student success. This study focuses on students’ attitudes towards mathematics, utilizing the novice-expert continuum through Code et al.’s Mathematical Attitude and Perceptions Survey (MAPS) instrument. Student expertise scores, including all MAPS dimensions and specific dimension scores, were assigned. Kruskal-Wallis Rank-Sum tests identified differences in student populations by course and attitude dimension. …

Level Of Opportunity For Translanguaging In A One-Way Dual Language Program, Cristina Flores

Theses and Dissertations

In the context of language diversity in schools, this research underscores the persistence of monolingual academic standards despite linguistic variety. Bilingual education, historically intertwined with sociopolitical agendas aligning with dominant societal power structures, necessitates a paradigm shift. Bilingual educators must empower students to utilize their complete linguistic repertoire, fostering creative language expression through translanguaging (Sánchez et al., 2018, p.13). This approach challenges superficial language norms, potentially deviating from the standard language codified by a powerful central group.

The study delves into the types of language practices teachers permit, promote, or prohibit and examines teachers' perceptions regarding the constraints of a …

Strategies Community College Mexican American Adult College Algebra Students Use When Graphing Function Transformations, Roxana Pamela Jimenez

Theses and Dissertations

This qualitative case study pursued to describe the different strategies Mexican American adult students in a local community college used to graph function transformations. Participants in the study were purposefully selected using a criterion sampling to ensure participants were atypical, above average students between the ages 18-22, and had a final course average of 89.5-100 in College Algebra. Three research questions were examined 1) In what ways do Mexican American adult college students graph a function transformation? 2) Which strategies do students implement when graphing a function transformation? Qualitative research methods using think aloud semi-structured interviews were used in this …

How An Instructor's Noticing For Equity Can Foster Students' Sense Of Belonging And Mathematical Confidence, Sthefania Espinosa

Theses and Dissertations

There are many aspects a teacher can notice inside the mathematics classroom, and the more a teacher notices, the more difficult it is to teach. In this study, I particularly focus on noticing for equity, which describes the role of the teacher in attending to students’ mathematical thinking through an equity lens that can allow the instructor to notice the aspects of classroom mathematical activity that can make students feel less or more empowered in their mathematical practices (van Es et al., 2017). There exists few research about how students perceive their instructor’s effort to promote equity and …

Texas School Social Workers: Demographics, Work Characteristics, Job Satisfaction, And Work Barriers And Facilitators, Astrid Gandaria

Theses and Dissertations

This study examines the demographics, and job, services, responsibilities, barriers, facilitators, and satisfaction of Texas school social workers. A survey was emailed to Texas school social workers identified on a state list. A convergent parallel mixed method design was used to compare and discuss quantitative and qualitative data obtained. The data reveal consistency with existing school social work literature related to demographics and provided novel information on work characteristics, job satisfaction, work barriers and facilitators, and program preparation of school social workers. The data shows school social workers are highly involved …

Effects Of Short-Term Pesticides Exposure On Swimming Behavior, Tissue Morphology, Oxidative-Nitrative Stress, Antioxidant Expression, And Cellular Apoptosis In Kidneys Of Goldfish, Esmirna Cantú

Theses and Dissertations

The prevalence of pesticides in the aquatic environment continues to increase due to anthropogenic activities and poses a threat to aquatic organisms. The aim of this study was to determine the short-term exposure (one-week) of pesticide mixtures (metolachlor, linuron, isoproturon, tebucanazole, alconifen, atrazine, pendimethalin; azinphos-methyl) on swimming behaviors, kidney morphology, and expression of nitrotyrosine protein (NTP), dinitrophenyl protein (DNP), superoxide dismutase (SOD), catalase (CAT), renin, and cellular apoptosis in goldfish (Carassius auratus). Results indicated that both low- and high-dose pesticide mixtures decreased the distance swimming behavior. Histological analysis showed pesticide exposure alters kidney morphology. DNP, NTP, and renin expressions, and …

Rhythmic Ritual: Hand Papermaking As A Transformative Process, Keatan Mckeever

Theses and Dissertations

This thesis is an exploration of the transformative processes of hand papermaking, both personally and materially, through various artworks situated between two- and three-dimensional forms. The conceptual motivations supporting my practice are informed by intuition, locally sourced materials, human connection, material structure, and low-tech approaches to the papermaking process. In the first portion of this thesis, I discuss how I chose paper as my artistic medium, and the transformational process of hand papermaking through a historical lens. The second half follows the experimentation and limitations that informed my practice, the content of my work regarding material and structural qualities, and …

A Combinatorial Proof Of Supercranks For Partitions With A Fixed Number Of Parts, Jacob J. Gutierrez

Theses and Dissertations

In a previous paper by Eichhorn and Kronholm, a selection of supercranks for p(n,m) was established by generating functions. In this paper we will reprove this result with combinatorial witnesses for the selection of supercranks via integer lattice points.

Mano De Obra: Exploring Processes And Materiality In Artwork, Karla Gabriela De La Fuente

Theses and Dissertations

This thesis paper examines the theoretical derivatives and artistic influences that drive the artist’s ongoing series of works exploring the human experience of the working class in the border region of South Texas and beyond. Through the use of found objects, organic regional materials, adopted and adapted processes; the artist creates artwork that teeters on a tightrope between sweet, subtle naivety, and sudden, robust spoonfuls of truth. The artwork has an emphasis on the materiality, and the parallel between the “Mano de Obra” of the artist at work and that of the working class of our communities.

Quasipolynomials And The Unimodality Of Gaussian Polynomials, Paul Marsh

Theses and Dissertations

We illustrate a method to prove the unimodality of Gaussian polynomials ${N+m \brack m}$ for $m = 5$ and $6$, building upon Dr. Brandt Kronholm's work, which proved unimodality for $m = 2,3,$ and $4$. Our approach involves viewing coefficients $p(n,m,N)$ of Gaussian polynomials $N+m \brack m$ based on how far away $n$ is from the central coefficient $p(\lfloor\frac{mN}{2}\rfloor,m,N)$ and then creating generating functions for those coefficients. We then take the difference of neighboring generating functions and change those generating functions into quasipolynomials to verify that their coefficients are non-negative. While the generalization of these generating functions for the coefficients …

Meeting Students’ Needs To Improve Motivation And Higher Academic Achievement In Rio Grande Valley Schools, Tanya Jessica Reyes

Theses and Dissertations

Educational systems are to prepare students for future success in our ever-changing world. Administrators must realize that before a student is willing to learn, crucial needs must be met, especially in low-socioeconomic areas such as the Rio Grande Valley. Some basic needs consist of food and shelter, which are vital for survival. Other needs deal with one’s social and emotional needs that support a child's safety, sense of belonging, and their self-esteem. In this study, focus groups were conducted with sixth, seventh, and eighth grade student participants that gathered the phenomenon of their experiences and their fulfillment of needs …