Digital Commons Network^™

On Spectral Density-Based Goodness-Of-Fit Tests For Time Series Models, Biao Zhang

Doctoral Dissertations

The goodness-of-fit tests for time series models have been discussed for years. Most of the current goodness-of-fit tests require the calculation of residuals from the fitted model. Such calculations can be tedious, and in some cases, the tests are even unreliable. Furthermore, most of their results require assumptions that rule out long memory processes, whose autocorrelation decays at a hyperbolic rate as the lag increases and has become popular in time series modeling. In this thesis, a new goodness-of-fit test for time series data is proposed. The test statistic is based on the ratio between the periodogram and the parametric …

Ultralight Axion Dark Matter With Self-Interactions, Noah James Glennon

Doctoral Dissertations

Our Universe is filled with an invisible substance, called dark matter, which dominates the ways in which structures like galaxies form. Ultralight axion (ULA) dark matter is a possible alternative to more common cold dark matter models. Self-interactions in ULA models are often discarded because they are constrained to be very small. However, in my research, I have found that including self-interactions in these models can have a significant impact on what we observe, even when the self-interaction is small. I simulate ULA dark matter with self-interactions and quantify how different phenomena, including isolated soliton oscillations, binary soliton collisions, tidal …

Embedding Explicit Metacognitive Instruction Into The General Chemistry Curriculum: Equipping Community College Students With 21st Century Stem Competencies, Sonja Gamby

Doctoral Dissertations

This work describes the development, implementation, and assessment of a curriculum- embedded metacognition instruction model. The Talking About Learning is Key (TALK) module, a 10-week, discussion-based instruction module was initially integrated into a general chemistry course at a community college in Spring 2020. This case study was assessed qualitatively using a thematic analysis to characterize student posts and replies to the Learning Management System discussion board. Course outcomes between Spring 2020 – Fall 2021 were analyzed to determine what effect participation had on course completion and final grade.Finally, the generalizability of the module was investigated using a focused case comparison …

Synthesis, Modification, And Characterization Of Semiconductor Photocatalysts For Environmental Remediation, Norbert Okechukwu Okolie

Doctoral Dissertations

Semiconductor photocatalysis is a viable solution to tackle the increasing global demand for energy and the need for the recovery of wastewater in situ, without the need for fossil fuel dependence. Semiconductor materials active in the visible or near visible regions of light have been explored as suitable candidates for photocatalytic environmental remediation. Magnesium tantalates (MgTa2O6-xNx) were initially explored as promising candidates because their bandgaps can be brought well into the visible region by the introduction of nitrogen atoms as dopants. The synthesis of a highly ordered mesoporous nitrogen doped magnesium tantalate was achieved and the bandgap of magnesium tantalate …

“They Turn To Violence”: Active Shootings And The Convergence Of Hegemonic Masculinity, Race, And Perceived Injustice, Linda M. Fogg

Doctoral Dissertations

Public rampage shootings like Parkland, FL, the Las Vegas concert shooting, and Sandy Hook are a type of crime that captures national attention. As media covers these incidents and the perpetrators of them, they seek to explain why someone would commit such violence. Using active shooter data for incidents that occurred between 2000 and 2019, I examine shooter identity with particular focus on the shooter’s race, an often-unreported statistic. Finding 55.4% of active shooters are white men, interviews with 20 white men and 10 white women are analyzed for explanations for white men’s violence. These men and women describe active …

Seismic Soil-Structure Interaction And Foundation Rocking In Unsaturated Ground, Matthew Michael Turner

Doctoral Dissertations

Strong earthquake motions often cause severe damage to buildings and foundation systems, during which the interaction between the soil, foundation, and structure may dominate the seismic response. Most shallow foundations are located on, or embedded in, unsaturated and partially saturated soil deposits. Unsaturated soil layers are particularly common in zones above the water table where water can rise through different mechanisms like capillary action. Additionally, the degree of saturation throughout a soil deposit can vary both seasonally and yearly due to groundwater table fluctuation related to infiltration and evaporation. Properties of soil layers below foundations impact the seismic response of …

Influence Of O+ On Onset And Energy Release In The Earth’S Magnetotail, Akhtar Shojaei Ardakani

Doctoral Dissertations

Although the magnetotail plasma sheet predominantly consists of protons and electrons, singly charged oxygen ions, of ionospheric origin, are the third most abundant species in the plasma sheet. During disturbed times, the amount of oxygen ions in the plasma sheet and the inner magnetosphere can be comparable to the levels of the H+ ions and because of its larger mass, such a population of O+ in the near Earth magnetotail has the potential to modify the plasma sheet dynamics. It can affect the current sheet stability enhancing the growth rate of the ion tearing instability (ion scales) or alter overall …

Influences Of Students’ Use Of Calculus 1 Signs/Symbols On Students’ Assessment Scores, Phuong Wilk

Doctoral Dissertations

Mathematical notations not only contribute to but also confound the development of the understanding of mathematical concepts (Leinhardt, Zaslavsky & Stein,1990). Inaccurate use of calculus notations is likely to have a significant influence on student conceptual understanding and student assessment scores in the Calculus 1 course. This dissertation study aimed to examine whether or not the relationship between student’s ability to correctly write signs/symbols, interpret signs/symbols and interpret concepts using signs/symbols (students’ use of signs/symbols) and student assessment scores is statistically significant. The relationship between students’ use of sign/symbol and students’ grade performance was also examined under the effects of …

A Mixed Methods Approach To Social License To Operate For Aquaculture: Understanding How Broad Public Perceptions And Local Company Actions Influence Community Acceptance, Emily H. Whitmore

Doctoral Dissertations

With aquaculture development becoming increasingly important in meeting global food needs, understanding social dynamics of development is essential. Social license to operate (SLO), a concept that describes community acceptance and approval of incoming industry, offers a lens into these dynamics and possible strategies for successful development. Using a mixed-methods approach, this project aimed to investigate how broad public perceptions and local company actions influence social license to operate in aquaculture. First, a systematic literature review of SLO studies identified perceptions that would likely condition a community’s willingness to issue social license, independent of company actions. These predictors included environmental values, …

Examining Empathy During An Initial Nutrition Counseling Session Through Video-Cued Narrative Reflection, Kevin Joseph Pietro

Doctoral Dissertations

Empathy is considered critical to client-centered care within the broader nutrition profession. Through empathy, practitioners are said to recognize the individual experience better, support client/patient autonomy, and encourage collaboration in decision-making regarding treatment. However, the literature on empathy is fraught with conceptual disagreement and methodological misalignment, which has resulted in a limited understanding of the role and presence of empathy within a nutrition counseling session. Additionally, research conducted on nutrition undergraduate students using self-reported questionnaires may offer insight into students’ perceived/believed tendencies related to empathy but fail to provide evidence of empathy during a patient/client interaction. Given the current landscape, …

Characterizing New Hampshire Salt Marshes Using Geospatial Technologies, Michael R. Routhier

Doctoral Dissertations

Salt marshes are coastal wetlands flooded regularly by saltwater tides and terrestrial runoff. They are highly productive and dynamic ecosystems that provide many benefits to the environment and humans. These benefits are at risk by many natural and anthropogenic drivers that are affecting the distribution of their vegetation species. Previous research shows that salt marsh vegetation around New England has been shifting from less flood-tolerant species to more flood-tolerant species in recent decades. Monitoring these ecosystems can be helpful in providing policymakers with the information they need to promote mitigation and restoration efforts for these environments. Remote sensing is one …

Deep Learning Based Predictive Models For Performance Enhancement In Bio Medical Applications, Sajila Dimagi Wickramaratne

Doctoral Dissertations

The medical field produces large quantities of multidimensional, complex, and often unstructured data. The timely interpretation of medical data is crucial for medical diagnostics. Machine learning applications are increasingly becoming popular with the ever-increasing computational ability and data availability. Machine learning methods can potentially find complicated relationships that may not be apparent in traditional clinical decision rule systems used in medical applications. Models deployed in medical applications need to be reliable, time efficient, and easy to interpret, thus making working with biosignals challenging in some cases.

The first part of the dissertation focuses on building predictive systems using existing data …

Modernism On The Edge Of The Anthropocene: The Ecological Imagination Of Forster, West, Warner, Woolf, And Eliot, Leanna Jean Lostoski-Ho

Doctoral Dissertations

By reading modernist literature on the edge of the Anthropocene, I argue in this dissertation that modernist authors, through the experimental aesthetics of their works, are able to articulate the beginnings of anthropogenic climate change in the early-twentieth century. The early-twentieth century, and particularly the interwar period, in which British modernist authors such as E. M. Forster, Rebecca West, Sylvia Townsend Warner, Virginia Woolf, and T. S. Eliot were writing coincides with the early-twentieth-century ramp up period of human activity rising to the level of a geological force before the beginning of the Anthropocene. While this dissertation does not argue …

A Comparison Of The Spectroscopically Determined Complex Refractive Indices Across Uv/Vis Wavelengths For Vanillic Acid From Two Aerosol Generation Methods, Vahid Hosseinpour Hashemi

Doctoral Dissertations

Aerosols are important because of their direct and indirect impact on the energy budget of Earth. Characterizing and understanding the physical, chemical, and optical properties of aerosols is beneficial to decrease uncertainties on the Earth’s energy budget estimations and improve climate models. Field studies characterize the real conditions and cases; however, controlling all variables, including the weather, is impossible, so only a snapshot can be obtained. Laboratory work can be a great support for field studies because controlling experimental conditions on a smaller scale is easier and targets can be achieved. Laboratory optical property studies of aerosol, even single chemical …

Type 3 Adenylyl Cyclase, Neuronal Primary Cilia, And Hippocampus-Dependent Memory Formation, Yuxin Zhou

Doctoral Dissertations

Primary cilia are microtubule-based cellular antennae present in most vertebrate cells including neurons. Neuronal primary cilia have abundant expression of G-protein coupled receptors (GPCRs) and downstream cAMP signaling components such as type 3 adenylyl cyclase (AC3). The deflects of neuronal cilia is associated with many memory-related disorders, such as intellectual disability. Thus far, little is known about how neuronal primary cilia regulate neuronal activity and affect hippocampal memory formation. Episodic memory is thought to be encoded by sparsely distributed memory-eligible neurons in the hippocampus and neocortex. However, it is not clear how memory-eligible neurons interact with one another to form …

Cyclodextrin Impedimetric Biosensors For The Detection Of Hydrophobic Metabolites, Zahra Panahi

Doctoral Dissertations

Sepsis is a complicated medical emergency and critically ill patients suffering from infectious diseases are at a high risk for developing and dying from sepsis. According to a recent (2019) cohort study from six United States hospitals, suboptimal care (e.g., delay in antibiotics, inappropriate antibiotic therapy) is responsible for 22.7 % of in-hospital sepsis-associated deaths. In September 2020, the World Health Organization called on the scientific community to develop rapid, effective, and affordable tools to improve diagnosis, surveillance, and treatment of sepsis. Our long-term goal throughout this project is to develop a cyclodextrin (CD) impedimetric tongue that can provide early …

A Case For Re-Commoning: The (De)Commodification Of Food In Lewiston, Maine, Sophie Worsh-Farnum

Standard Theses

The enclosure of land and food production technology that began during Western colonization in what is now called Lewiston was part of a larger global movement towards the commodification of food through Western notions of capital and private ownership. The contention of this paper is that this historical context has produced our current food crisis: a paradox where, despite production of more than enough food to feed the world’s population, hundreds of millions of people do not have access to adequate food. The Lewiston community experiences high rates of food insecurity despite the presence of food organizations battling hunger. Through …

Constructing Temporality And Contextualizing The Passing Of Time: How Native Foods Operate As Timekeepers / How The Modern American Food Market Manipulates Their Functionality, Robert Francis Sheils

Standard Theses

There is extensive evidence that suggests that Indigenous groups in the Northern Hemisphere (specifically in the Northern areas of what is now known as the United States) have held empirical knowledge of food and food systems to help conceptualize the passing of time. In conjunction with seasonal weather changes and evolving moon patterns, certain foods have acted as annual landmarks in which tribes could better understand their calendar year as having a cyclical design; in addition to organizing moments of the year, dishes are also made to celebrate the environments from which their ingredients were foraged from. Thus, food can …

Mapping The Impacts Of Climate Change On Mediterranean Viticulture, Zoe A. Knauss

Standard Theses

Climate change will have a profound impact on viticulture across the planet in the coming decades. Viticulture in the Mediterranean Basin will be disproportionately affected, as it is considered a climate change hotspot. This study focuses on how the vineyards of three notable wine regions in southern France will be affected by projected changes in average annual temperature, total annual precipitation, average length of droughts, and average volumetric soil water (VSW) content in layer 1 soils due to climate change. Vineyard soils will also be affected by climate change in this region, indirectly impacting grape cultivation as well. A GIS …

The Environmental Implications Of War: Analysis Of The Spectacular And Slow Environmental Violence Inflicted Through Russia’S Deliberate Targeting And Weaponization Of Ukrainian Environments, Alexander Campanile Sheikh

Standard Theses

The presence of war and armed conflict can cause extreme effects in the long and short term, but war as a concept holds an inherently anthropocentric bias. Among human activities causing severe changes to the environment, war’s consequences are both intensive and far reaching, and while war is incited, perpetrated, and fought specifically by humans, these conflicts come at the expense of all, including a silent victim: the greater environment in which wars take place. Today, the conflict between Russia and Ukraine is the most significant confrontation in Europe in decades. Public attention and outrage, however, tends to focus on …

Inclusive, Accessible, And Successful: Is It Possible? ​A Case Study Analysis Of How To Curate An Enduring Justice-Centered Farmers Market In Lewiston, Me​, Annie Cc Conway

Standard Theses

Food Security is the physical and economic access to safe, sufficient and nutritious food at all levels of society to ensure a healthy and happy lifestyle for all people; this theme intersects with other topics such as food justice, food deserts, and food sovereignty. In the United States, 11.4 % of the population receives Supplemental Nutrition Assistance Benefits (SNAP) while in Maine, 12.1% do and in Lewiston, this number more than doubles, with 24.4% of the local population receiving SNAP benefits. Thus, Lewiston, Maine provides an interesting locale to understand how the national, regional, and local food system impacts local …

Exploring Tensions Between Two Maine Landscapes: Toxic And Pristine, Caitlyn Elizabeth Hanley

Standard Theses

This thesis juxtaposes a historical account of environmental toxicity in Maine against the popular notion of Maine as a “Vacationland.” Maine is famous globally for its pristine aesthetics, iconic coastline, and vast wilderness. Because of this, tourism is amongst the largest economic sectors for Maine, much different from the complex industrial history that once drove the economy and built a strong foundation for the state. Public discourse advertises Maine as a “Vacationland,” capitalizing on its natural features while ignoring and even marginalizing the toxic history of Maine which is still impacting communities today. This idyllic visage of Maine contradicts the …

A Rare Presentation Of Concomitant Lung Disease And Hepatitis After Rituximab Treatment: A Case Report, Linda Albusoul, Hussna Abunafessa, Vrushali Dabak

Hematology/Oncology Articles

Rituximab (RTX) is a chimeric monoclonal antibody that is a standard component of treatment for all B-cell malignancies. The most common adverse events related to RTX are infusion-related reactions, such as fever, chills, urticaria, flushing, and headaches. However, RTX-induced lung disease (RTX-ILD) is a rare but potentially fatal adverse reaction, and diagnosing RTX-ILD is challenging, especially when accompanied by other rare adverse reactions, such as hepatitis. Here, we report a case of RTX-ILD with concomitant RTX-induced hepatitis in a 55-year-old man with follicular B-cell non-Hodgkin lymphoma who was on maintenance RTX therapy. The patient presented with a subacute, persistent dry …

Nonprofit Marketing And Communication Personnel Job Satisfaction: The Effects Of Role Conflict And Role Ambiguity, Rachel L. Swink

Communication Theses - Archive

Job satisfaction is becoming increasingly important in efforts to retain employees across all sectors. The nonprofit sector is facing greater challenges than ever before in competing for and retaining adequate talent. The nonprofit sector provides unconventional benefits such as hybrid office models, paid time off, and others to improve job satisfaction. While nonprofits receive high job satisfaction, turnover is a big issue, even among marketing and communication teams which are often underfunded, understaffed, and unappreciated. Marketing and communication teams play a unique role within nonprofits, as they are frequently pulled in different directions to accomplish tasks that may not necessarily …

Community Engagement Newsletter, May 2023, University Of Northern Iowa. Office Of Community Engagement.

Community Engagement Newsletter

Contents:

--- Award Recipients
--- PROJECT HERE
--- Iowa Nonprofit Alliance Launching in the Cedar Valley
--- Community Transit Survey
--- Summer Opportunities with Campus Compact
--- UNI Engaged Podcast
--- See you next fall, but in the meantime…

A Community U-Knighted: Developing A Community Engagement Program For Student-Athletes, Jensen Kitrel

Undergraduate Theses

Student-athletes are expected to fill multiple roles and balance both athletic and academic responsibilities while facing other stressors. In some cases, student-athletes are further tasked with engaging with their communities as university representatives. Past research has shown that the motivation to participate in these initiatives is low due to lack of time and has acknowledged burnout among college athletes (Martin, 2019; Huml, 2019). However, few studies have taken a creative approach to address this important challenge. Utilizing functionalist theory and marketing strategies, the current research develops a program to increase volunteerism and community engagement among collegiate athletes.

Medical Falsity: The False Claims Act’S Quagmire For Medicare And Medicaid Claims, Jordan R. Einhorn

Buffalo Law Review

No abstract provided.

Forget Escapism, I Read For The Badass Heroines, Camille Norman

RhetTech

"Forget Escapism, I Read for the Badass Heroines" is a personal narrative exploring female entrapment in love stories and marriage plots. Through the 21st-century adventure of Katniss Everdeen in The Hunger Games, the author recognizes the value of female representation in stories where romance takes the role of a mere subplot. In doing so, the author rebuilds her relationship with postmodern female archetypes by reanalyzing 18th-century Catherine Earnshaw from Wuthering Heights and sympathizing with her proto-feminist attributes. Far from a pessimistic rejection of romance stories, this essay calls for a "yes, and..." approach to female representation in a broader range …

The Forest, Pari Patel

RhetTech

The Forest' is a piece of descriptive writing, scaffolded with figurative language, vivid imagery, and a stark contrast between the beginning and the end. The forest the narrator is in starts off seeming divine and pure, and later transitions into appearing evil and sinister, symbolizing how people are often deceived by the true nature of things or other people around them.

Online Luxury Resale Platforms And Customer Experiences: A Text Mining Analysis Of Online Reviews, Chuanlan Liu, Sibei Xia, Chunmin Lang

Faculty Publications

There are long-standing arguments that challenge the resale business as a circular fashion model. Considering the whole fashion industry and market, luxury resale is still quite small. To scale the industry, it is critical to attract more consumers to embrace fashion resale and circular fashion. However, many of the customers most likely to embrace resale might have already opted into the market, indicating that online or in-store resale businesses are competing for a limited pool of customers. As a result, it is challenging for the industry to scale. Therefore, it is imperative to understand how consumers engage with luxury resale …