Digital Commons Network^™

Development Of A Statistical Model To Predict Materials’ Unit Prices For Future Maintenance And Rehabilitation In Highway Life Cycle Cost Analysis, Changmo Kim, Ghazan Khan, Brent Nguyen, Emily L. Hoang

Mineta Transportation Institute

The main objectives of this study are to investigate the trends in primary pavement materials’ unit price over time and to develop statistical models and guidelines for using predictive unit prices of pavement materials instead of uniform unit prices in life cycle cost analysis (LCCA) for future maintenance and rehabilitation (M&R) projects. Various socio-economic data were collected for the past 20 years (1997–2018) in California, including oil price, population, government expenditure in transportation, vehicle registration, and other key variables, in order to identify factors affecting pavement materials’ unit price. Additionally, the unit price records of the popular pavement materials were …

A Study Of The Purple Star School Designation Program: Summary Report, Center For Public Research And Leadership, Military Child Education Coalition (Mcec)

Center for Public Research and Leadership

Military-connected (MC) families are tough and agile. Moving three times more often, on average, than their civilian counterparts, parents and students quickly learn to become fierce advocates for themselves, lobbying schools to provide the basic educational services and social-emotional supports to which all American children are entitled. But this advocacy becomes exhausting and draws time away from the other pressing demands of relocation and family life. What relief might parents feel if they did not have to constantly put on their armor to fight these battles? And what more could students accomplish if they did not have to settle for …

“It’S A Hoax!” A Practical Guide For Understanding And Surviving Weird Internet Phenomena, Camille S. Price

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This project dives into some of the darkest of online spaces, as I seek to uncover the legends, narratives, and beliefs that encourage and popularize culture surrounding self-harm. Building on the extensive research that has been conducted on folk antagonists born on the internet such as the Slenderman, I will discuss another character named Momo who, according to legend, lead their primarily young followers through a series of self-inflicted, harmful acts, each increasing in severity, with the final act ultimately being the taking of one’s life. Research will examine social media threads, YouTube videos, film/television, and fan fiction to unpack …

Authentic Language Use In The L2 Classroom: Building Learners' Motivation And Confidence, Emma Duncan

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This portfolio is a compilation of work completed by the author while in the Master of Second Language Teaching program at Utah State University. The portfolio contains samples of the author’s writings on various aspects of language learning and perspectives that the author developed through study of language acquisition topics and classroom teaching experience.

Included in the portfolio is a statement of the author’s desired professional environment, her teaching philosophy, and a description of her experiences observing teachers of various languages. Also included is an annotated bibliography and two research papers which detail some of the author’s specific interests within …

Broadening Perspectives: Using Multiple Teaching Approaches To Meet The Needs Of Language Students, Kalen Taylor

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This portfolio is comprised of research, opinions, and ideas that the author has learned during the Master of Second Language Teaching (MSLT) program at Utah State University (USU). It is a representation of experiences gained through teaching lower division Spanish courses at USU. In addition to experiences, it is also comprised of research perspectives which were furthered by coursework in the MSLT program.

Contained within the pages is a road map of the author’s journey of learning and research. The portfolio begins with the author’s perspectives on teaching including his philosophy on teaching and how he has developed by observing …

Pretendians, Settler Collectors, And #Nativetwitter: Indigenous Rhetorical Sovereignty, Carly Schaelling

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This thesis paper uses thematic analysis to find and report themes in the minority online community space of #NativeTwitter. Drawing from Lisa King’s theory of rhetorical sovereignty, this paper outlines how Indigenous people use Twitter to assert and take back control of their voices and images, as well as build community and connect with each other. This paper outlines three major themes within #NativeTwitter, as analyzed from a group of tweets pulled from the community from October 28-31st in 2018. The themes are: Calling out and Calling in, Community Building and Fostering Connection, and Cultural Preservation. Examples for each of …

Refinements Of The Concept Of Privacy In Distributed Computing, Entisar Seedi Alshammry

Theses and Dissertations

In light of the tremendous development of technology in the modern world in which we live, privacy concerns are increasing, especially after the massive spread of distributed computing systems and the technologies that depend on it, whether in personal devices or public services. Hence, this research proposes refinements on the concept of privacy for enhancing the development of privacy-related strategies in distributed computing systems to address the elements of privacy. In particular, the study introduces the new concept of Privacy Appetite to describe and model the nature of the relationship between the intended disclosure of private information and gained value …

Framework For Reasoning With Speech Processing, Ahmed Laarfi

Theses and Dissertations

It is known that programming languages are textual. We try here to take the advantages of Speech Recognition (SR) and employ them in creating a verbal Language, which takes its instruction from the voice. Because this work is a novel approach in the programming world, we could not find any resources. This dissertation aims to make essential developments in Speech Recognition (SR)and Artificial Intelligence by constructing a new compiler that receives commands verbally and executes them. That means entering data into the Computer by voice commands. This method of input means that we link several major computer topics with several …

Modern Standard Arabic Speech Recognition: Using Formants Measurements To Extract Vowels From Arabic Words’ Consonant-Vowel-Consonant-Vowel Structure, Mohamed Ali Alshaari

Theses and Dissertations

Arabic texts suffer from missing diacritics (short vowels) which become obstacles for new learners. Speech Recognition is the translation of words spoken to text through intelligent computer programs. As of today, it has been integrated into many computer systems. Arabic Speech Recognition has made progress over the years, but it is still not as good as English speech recognition due to the problem of short vowels not being recognized. This is mainly because the Arabic language is unlike the English language in the nature because it is a Semitic language. This is reflected in different characteristics such as grammar, morphology, …

Kspm: A Package For Kernel Semi-Parametric Models, Catherine Schramm, Sébastien Jacquemont, Karim Oualkacha, Aurélie Labbe, Celia M. T. Greenwood

The R Journal

Kernel semi-parametric models and their equivalence with linear mixed models provide analysts with the flexibility of machine learning methods and a foundation for inference and tests of hypothesis. These models are not impacted by the number of predictor variables, since the kernel trick transforms them to a kernel matrix whose size only depends on the number of subjects. Hence, methods based on this model are appealing and numerous, however only a few R programs are available and none includes a complete set of features. Here, we present the KSPM package to fit the kernel semi-parametric model and its extensions in …

Fitzroy: An R Package To Encourage Reproducible Sports Analysis, Robert Nguyen, James Day, David Warton, Oscar Lane

The R Journal

The importance of reproducibility, and the related issue of open access to data, has received a lot of recent attention. Momentum on these issues is gathering in the sports analytics community. While Australian Rules football (AFL) is the leading commercial sport in Australia, unlike popular international sports, there has been no mechanism for the public to access comprehensive statistics on players and teams. Expert commentary currently relies heavily on data that isn’t made readily accessible and this produces an unnecessary barrier for the development of an inclusive sports analytics community. We present the R package fitzRoy to provide easy access …

The Biglasso Package: A Memory- And Computation-Efficient Solver For Lasso Model Fitting With Big Data In R, Yaohui Zeng, Patrick Breheny

The R Journal

Penalized regression models such as the lasso have been extensively applied to analyzing high-dimensional data sets. However, due to memory limitations, existing R packages like glmnet and ncvreg are not capable of fitting lasso-type models for ultrahigh-dimensional, multi-gigabyte data sets that are increasingly seen in many areas such as genetics, genomics, biomedical imaging, and high-frequency finance. In this research, we implement an R package called biglasso that tackles this challenge. biglasso utilizes memory-mapped files to store the massive data on the disk, only reading data into memory when necessary during model fitting, and is thus able to handle out-of-core computation …

Evaluating The Impact Of Grafting On Local Tomato Production In Nebraska, Raihanah Hassim

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Vegetable grafting has been known to improve plant production under both biotic and abiotic stresses. With an increase in interest among local growers towards grafting production, it is important to provide enough vegetable grafting information. Therefore, the objective of this study is to assess the impact of grafting, rootstock cultivar, and local conditions and management on the yield and quality of tomato across the diverse growing and environmental conditions, specifically in Nebraska. Three open-field and one limited growing condition study were conducted between 2018 and 2019 across Nebraska. In the open-field trial, two determinant fresh market tomatoes, ‘Nebraska Wedding’ and …

The Sea Will Rise, Barbuda Will Survive: Environment And Time Consciousness, Sophia Perdikaris

School of Global Integrative Studies: Faculty Publications

In this article, we examine the link between environmental consciousnesses and time consciousness. We argue that the way people think about time shapes their experience of climate change threats. We contrast western hegemonic concepts of time—the Gregorian Calendar, the Dooms Day Clock, linear time—with the way Barbudans of Antigua and Barbuda, an island nation in the Caribbean experience time—cyclical, through boom and bust cycles. We found that this boom and bust framework was indeed supported by climate change and weather experiences on the island—hurricanes, droughts, changes in the lagoons—as well as economic experiences—cargo boat delays bringing supplies, paycheck delays. By …

What Help Do Faculty Perceive Is Needed To Improve Their Community Engagement Through Outreach?, Kiyomi D. Deards, Saundra Wever Frerichs, Patricia Wonch Hill, Julia Mcquillan

Department of Sociology: Faculty Publications

• A survey-based needs assessment at the University of Nebraska-Lincoln, a research-intensive land grant university, explored ways to meet the goal of increasing science, technology, engineering, and mathematics (STEM) outreach
• 40% of surveyed faculty reported barriers to doing STEM outreach
• Over 50% of faculty reported an inability to individually resolve barriers to STEM outreach in ways that ensure broader community engagement in their research through outreach
• Using a sociological lens, the current study examined institutional-level barriers and enablers to faculty engaging in outreach
• Results suggest several institutional approaches to STEM outreach, including creating infrastructure with experts in science communication; providing science …

Diversity And Inclusion In The Workplace: A Comparative Analysis Between A Large And Small Company, Andrew K. Hernandez

Construction Management

The construction industry in recent times have seen an increase in inclusivity and diversity among the workplace. The industry seems to make improvements and steps to create an overall accepting workforce. However, there is still a need to produce a more inclusive work environment. There are many organizations and legal requirements that push for improving diversity throughout companies, but still the industry struggles to do so. Improving diversity in the workforce can reach out to more personnel with talent and skill to possibly attack the trade labor shortage in this industry. Analytical research methods in these reports were used to …

Pre-Construction Documents For A Mobile Food Assembling & Distribution Station, Winnie He

Construction Management

On Christmas Eve of 2018, Jessica He Liu, a chef in Los Angeles opened her home to friends and family to volunteer and help assemble food boxes and personal hygiene products and distributed these goods out to those in need. What started off as a goal to spread kindness during the holidays, became a yearly traditional non-profit volunteering event for those families involved. In March 2020, the deadly COVID-19 pandemic took the world by surprise, causing a copious amount of social distancing guild lines to be formed and enforced. Although there was still a slight hope that the pandemic would …

A Study Of Student Experiences Of Racial Microaggressions At A Hispanic-Serving Institution, Alexandra E. Hughes

Theses and Dissertations

The purpose of this study was to examine college students’ experiences of racial microaggressions at a Hispanic serving institution. The participants were undergraduate and graduate students from a large higher education research institution in South Texas. The study had a qualitative approach with a two-step process of Phase 1 and Phase 2. Phase 1 of the study consisted of a participant selection survey sent to students via e-mail to obtain their experiences of racial microaggressions. In Phase 2, three focus groups were the means used to collect data. The findings suggested that there were experiences of racial microaggressions at the …

Battle Royale Video Games And Their Impact On First-Year Writing Students: Comparing The Writing Process Of Gamers To Non-Gamers, Jacob L. Molina

Theses and Dissertations

This study will examine the ways in which Battle Royale (BR) video games impact the writing process of first-year writing students at the University of Texas Rio Grande Valley by comparing the students that play video games recreationally to the non-gaming group. The study will focus on how the recreational use of video games impacts writing by exploring the ways that gamers engage in these video games. By comparing BR gamers to non-gaming students, these differences will be highlighted through the evaluation of surveys and information gathered through research.

Some of the areas of the writing process that stand out …

Cyber Intimate Partner Victimization And Its Association With Depression And Alcohol Use Among Hispanic Emerging Adults: Identifying Protective Factors, Jorge I. Cantu

Theses and Dissertations

The advent of modern technology has inadvertently created newer avenues for intimate partner victimization (IPV) to transpire. This study investigated whether among Hispanic emerging adults psychological, sexual, and stalking intimate partner cybervictimization (cyber IPV) types were uniquely associated with depression and alcohol use; whether there were additive effects of cyber IPV types on depression and alcohol use; and to test whether cognitive reappraisal, self-compassion, and flourishing served as protective factors by moderating the unique effect of each cyber IPV type and the effect of cyber IPV multi-victimization on depression and alcohol use.

Participants were 1,129 Hispanic emerging adults in the …

Effects Of The Met: Live In Hd On The Democratization Of Opera In America, Anna Wigtil

Glenn Korff School of Music: Dissertations, Theses, Student Creative Work, and Performances

The Met: Live in HD satellite broadcasts of live opera performances began in 2006 and have since become popular with audiences around the world. While this could be an excellent avenue to democratize opera and make it available to new audiences, the available data indicates that most Live in HD viewers are already opera enthusiasts and have previously attended live opera performances. This thesis examines the history of the Metropolitan Opera’s broadcasting efforts, the demographics of American opera audiences, trends in Live in HD’s repertoire, and strategies to increase Live in HD’s appeal to a broader, more diverse …

Regulating Derivatives: A Fundamental Rethinking, Steven L. Schwarcz

Duke Law Journal

The conventional wisdom is that derivatives are exotic and uniquely risky, although innovative, financial instruments. That perception has given rise to a regulatory patchwork described as “confusing, incomplete, [and] contradictory.”1 This Article rethinks how derivatives should be regulated. It begins by demystifying derivatives. In contrast to the arcane industry-derived categories, the Article deconstructs derivatives more intuitively, by their economic functions, into two categories of traditional legal instruments—option contracts and guarantees. Being neither exotic nor uniquely risky, most derivatives should be regulated like those traditional instruments. The Article then explains why at least one subset of guarantees—financial guarantees with systemically important …

Concentration And Treatment Of Odors Generated By Landfills, Gabriel Cohen

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Landfills produce hydrogen sulfide (H₂S), an odorous compound that can be a nuisance and danger to public. Biological treatment, in particular bio-trickling filters, is a method for controlling H₂S emissions but startup costs can be costly. The goal of this study is to provide a low-cost method for improving environmental air quality in Nebraska through an odor control device. This study determined that the Loup Central Landfill located near Elba, NE would be an adequate site for the testing and implementation of the odor control device. The off-gas of the Loup Central Landfill was tested for …

Diagnostic Value Of Clinical Features To Distinguish Enteric Fever From Other Febrile Illnesses In Bangladesh, Nepal, And Pakistan, Kristen Aiemjoy, Dipesh Tamrakar, Shampa Saha, Shiva R. Naga, Alexander T. Yu, Ashley Longley, Kashmira Date, Caitlin Hemlock, Farah Naz Qamar, Samir K. Saha

Department of Paediatrics and Child Health

Background: Enteric fever, a bacterial infection caused by Salmonella enterica serotypes Typhi and Paratyphi A, frequently presents as a nonlocalizing febrile illness that is difficult to distinguish from other infectious causes of fever. Blood culture is not widely available in endemic settings and, even when available, results can take up to 5 days. We evaluated the diagnostic performance of clinical features, including both reported symptoms and clinical signs, of enteric fever among patients participating in the Surveillance for Enteric Fever in Asia Project (SEAP), a 3-year surveillance study in Bangladesh, Nepal, and Pakistan.
Methods: Outpatients presenting with ≥3 consecutive days …

Antibiotic Use Prior To Hospital Presentation Among Individuals With Suspected Enteric Fever In Nepal, Bangladesh, And Pakistan, Krista Vaidya, Kristen Aiemjoy, Farah Naz Qamar, Samir K. Saha, Dipesh Tamrakar, Shiva R. Naga, Shampa Saha, Caitlin Hemlock, Ashley T. Longley, Kashmira Date

Department of Paediatrics and Child Health

Background: Antibiotic use prior to seeking care at a hospital may reduce the sensitivity of blood culture for enteric fever, with implications for both clinical care and surveillance. The Surveillance for Enteric Fever in Asia Project (SEAP) is a prospective study of enteric fever incidence in Nepal, Bangladesh, and Pakistan. Nested within SEAP, we evaluated the accuracy of self-reported antibiotic use and investigated the association between antibiotic use and blood culture positivity.
Methods: Between November 2016 and April 2019, we collected urine samples among a subset of SEAP participants to test for antibiotic use prior to the hospital visit using …

Where Is My Mind? The Who, What, And Where Of Mind Wandering At Work, Anthony Belluccia

Theses and Dissertations

Mind wandering is a phenomenon often tackled by cognitive psychologists and overlooked by organizational psychologists, despite numbers suggesting that disengaged employees cost organizations $550 billion a year. Mind wandering is a demonstrated disruptor to cognitive processes like reading and working memory capacity that impair performance but may also be helpful for creative problem solving and autobiographical planning. Despite this, extant research has yet to develop a framework for the antecedents of mind wandering, there are still gaps in our understanding of workplace implications of mind wandering, and it is typically treated as a monolithic construct, ignoring dimensionality. The current research …

Who Should Get “Ineffective”? A Principal’S Ethical Dilemmas On Teacher Evaluation, Taeyeon Kim, Charles Lowery

Department of Educational Administration: Faculty Publications

School principals play a critical role in evaluating teachers and providing feedback, but high-stakes evaluation policies at the local and state levels can create ethical dilemmas for principals. In this case, an underresourced rural school principal has to report a certain number of “ineffective” teachers to meet a requirement from the district teacher evaluation, even though the principal does not think any teacher in his school deserves to receive an “ineffective” rating. This study can be used to help students unpack issues of dilemmas coming from consequential accountability policies that overlook the relational ethos of educators and leaders in school …

Identifying Depressive Symptoms From Tweets: Figurative Language Enabled Multitask Learning Framework, Shweta Yadav, Jainish Chauhan, Joy Prakash Sain, Krishnaprasad Thirunarayan, Amit P. Sheth, Jeremiah Schumm

Publications

Existing studies on using social media for deriving mental health status of users focus on the depression detection task. However, for case management and referral to psychiatrists, healthcare workers require practical and scalable depressive disorder screening and triage system. This study aims to design and evaluate a decision support system (DSS) to reliably determine the depressive triage level by capturing fine-grained depressive symptoms expressed in user tweets through the emulation of Patient Health Questionnaire-9 (PHQ-9) that is routinely used in clinical practice. The reliable detection of depressive symptoms from tweets is challenging because the 280-character limit on tweets incentivizes the …

"Don't Put An 'Or' Where God Puts An 'And'": Constitutive Rhetoric In Queer Appalachia., Brooke Elizabeth Boling

Electronic Theses and Dissertations

Appalachians who use the word “queer” to specifically refer to being gay, lesbian, bisexual, transgender, queer, intersex, and/or asexual, are regularly faced with negotiating how these parts of their identity can exist simultaneously, as many both within and without the region believe it is impossible to be Appalachian and queer at the same time. Despite rampant homophobia in the region and external narratives suggesting that queer Appalachians do not exist, these folkx have carved out spaces for themselves to assert their identities and create community and belonging through rhetorical actions. Many of these spaces are online, taking place through digital …

Parametric Analysis Of Particle Spreading With Discrete Element Method, Yuxuan Wu

Doctoral Dissertations and Master's Theses

The spreading of metallic powder on the printing platform is vital in most additive manufacturing methods, including direct laser sintering. Several processing parameters such as particle size, inter-particle friction, blade speed, and blade gap size affect the spreading process and, therefore, the final product quality. The objective of this study is to parametrically analyze the particle flow behavior and the effect of the aforementioned parameters on the spreading process using the discrete element method (DEM). To effectively address the vast parameter space within computational constraints, novel parameter sweep algorithms based on low discrepancy sequence (LDS) are utilized in conjunction with …