Digital Commons Network^™

Density Anomaly Leads To Rift Initiation: Quantifying Active Rifting And Comparison To The East African Rift Zone, Chloe Boucher

Graduate Student Theses, Dissertations, & Professional Papers

Active rifting, elastic failure in the lithosphere from rising density anomalies in the mantle, is fundamental to the Wilson Cycle which describes the cycle of tectonic plates. Active rift zones are common in the oceanic lithosphere but are less common in the thicker continental lithosphere. The current largest active continental rift zone is the East African Rift Zone (EARZ). Although active rifting is fundamental to plate tectonic theory, the mechanics and parameters needed for a density anomaly to initiate a rift have not been undertaken. This model aims to solve the problem of a density anomaly initiating a continental rift …

The Impact Of Treatment Dosage On Cognitive-Linguistic Outcomes Of Patients With Aphasia: An Investigation Of Three Service Delivery Models, Adele J. Derendinger

Graduate Student Theses, Dissertations, & Professional Papers

This study addresses the gap in literature by directly comparing the effectiveness of Intensive Comprehensive Aphasia Programs (ICAPs) and modified ICAPs (mICAPs) to usual care service delivery models for people with aphasia. Through a prospective study design, cognitive-linguistic function change scores across different service delivery models were examined. The findings reveal significant within-group improvements in cognitive-linguistic function for participants in ICAPs, with some improvement seen in mICAPs and usual care conditions. Intensive models demonstrated greater improvement compared to non-intensive usual care models, particularly evident in the Western Aphasia Battery – Revised and the Boston Naming Test – Second Edition. …

An Investigation Of Three Rehabilitation Models On Cognitive-Linguistic And Psychosocial Well-Being Outcomes For Stroke Survivors With Chronic Aphasia, Jenna Ray Griffin

Graduate Student Theses, Dissertations, & Professional Papers

Aphasia, a typically chronic language impairment that impacts expressive and receptive language but does not impact intelligence, occurs in approximately 30 - 40% of stroke survivors. Chronic aphasia negatively impacts functional communication, communicative participation, and psychosocial well-being in stroke survivors. Access to care during the post-acute phase of recovery is limited, requiring novel models of rehabilitation that are person-centered and holistic. The intensive comprehensive aphasia program (ICAP) model has shown proof-of-concept, feasibility, and acceptability to improve patient cognitive-linguistic outcomes, psychosocial well-being, and communicative participation. However, outcomes from an ICAP have not been compared to usual care aphasia therapy or to …

Sarmiento: A Town, A Lake And A Glimpse Toward The Global Water Crisis, Victoria Traxler

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Hydrogeomorphic Response To Flooding In Northern Yellowstone National Park, Zachary P. Deluca

Graduate Student Theses, Dissertations, & Professional Papers

Understanding and predicting flood-induced geomorphic change, and the relative influences of fluvial forces and valley-bottom geometry on system response, are persistent quandaries in geomorphic process studies. We combine field surveys, remote sensing, and hydraulic modeling to assess the hydrogeomorphic effects of historic flooding in northern Yellowstone National Park (YNP) in a variety of channel configurations. We compare impulse, a metric that incorporates a flow duration threshold based on threshold channel theory, grain size, channel-bed slope, and flood depth and stream power estimates with hydrogeomorphic response. Measurements of pre- and post-flood active-channel width change in aerial photos captured geomorphic response associated …

Exchange Rate Pass-Through To Inflation For Bangladesh: An Empirical Analysis, Saila Sarmin Rapti

Graduate Student Theses, Dissertations, & Professional Papers

Assessing the impact of exchange rate pass-through (ERPT) on inflation is a crucial concern for policymakers in both developed and developing economies. The study evaluates both short- and long-term pass-through effects, shedding light on the relationships between the exchange rate movements and inflation rates in Bangladesh. In this regard, this paper applies an Auto Regressive Distributed Lag (ARDL) model and Engle and Granger cointegration test with Error Correction Modeling (ECM) to estimate ERPT in Bangladesh based on monthly data spanning 2010 to 2023 to provide a more robust and rigorous investigation of the long-run and short-run pass-through of exchange rates. …

Staying Rogue: Lessons On Loving A Permitted River, Caroline Elizabeth Weiss

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Uncontrolled Burn: The Worker Well-Being Of Wildland Firefighters, Luke Santore

Graduate Student Theses, Dissertations, & Professional Papers

Purpose: The available evidence indicates that wildland firefighters (WLFFs) are experiencing a well-being crisis. This study aims to assess predictors of both worker well-being and social and emotional loneliness among WLFFs.

Methods: An adapted version of the National Institute of Occupational Safety and Health’s (NIOSH) Worker Well-Being Questionnaire, along with the De Jong Gierveld Social and Emotional Loneliness Scale (De Jong Gierveld & Van Tilburg, 2010) was distributed between May and October of 2023. Nine ordinary least square linear regression models were estimated to test the impact of demographic and employment variables on well-being in the sample of 95 …

Bloom: A Microbial Self-Portrait, Emily Lauren Mulvaney

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

A Tale Of Two Working Landscapes, Sage C. Sutcliffe

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

A Home For All: Innovative Management And Research Methodologies For Historic Archaeologists At Federally Regulated Landscapes At The Garnet Ghost Town, Andrea Jean Shiverdecker

Graduate Student Theses, Dissertations, & Professional Papers

This is a proposal for the Spring 2024 graduation of Doctor of Philosophy in Anthropology dissertation completion at the University of Montana. The dissertation work being submitted focuses on developing new and innovative cultural resource management methodologies for practical use by federal archaeologists through six archaeological research essays on the Garnet Ghost Town of Garnet, Montana. The goal of this archaeological investigation is to seek or solve, or at least significantly impact discussions on developing an explanation or understanding of the diversity of identities at Garnet while also developing new innovative technologies with recommendations for federal policy to be utilized …

Sudden Oak Death, Jeffrey William Guay

Graduate Student Theses, Dissertations, & Professional Papers

A novel set contemporaneously in rural Montana, Sudden Oak Death follows two protagonists, Wade and his teenage daughter Paige. Each are fighting different addictions, as Wade is in alcoholism recovery, and Paige recently came home from a drug treatment program. In order to succeed, Paige must reintegrate herself into public high school, despite suffering from undiagnosed dyslexia. Wade is raising his family as a single father, and struggles to maintain his emotional stability in the face of his own recovery.

Peoples Of India: The Use Of Craniometric Data To Distinguish A Separate Ancestral Group, Stephanie A. Craig

Graduate Student Theses, Dissertations, & Professional Papers

The Peoples of India come from an area with a long history of migrations into and out of the area. This area is considered the second most diverse genetically outside of Africa. Many would group these people as Asian due to the country’s location. However, when studies are done on the skeletal remains from this area, the remains tend to give results of mixed or indeterminate ancestry unless the analyst is familiar with identifying Peoples of India. This study aims to determine the Peoples of India as a separate ancestral group separated from Asians, Europeans, and Africans. To do this, …

Foodway Comparions And Patterns Of Consumer Behavior: The Use Of Orphan And Salvage Archaeological Collections From Historic Missoula, Montana, Emily Thea Meick

Graduate Student Theses, Dissertations, & Professional Papers

The goal of this project is to better understand and test theories about consumer behavior and meat consumption through faunal remains using orphaned and salvaged historic archaeological collections from three sites across Missoula, Montana, from the 1860s through the 1920s. Previous research underscored the need for properly defined units of analysis that represent what was being purchased and consumed. Using a consumer behavior framework and meat quality index, as indicated by price and meat yield, foodways comparisons between a Euromerican household that maintained renters, occupants of a Chinese store, Joss House, and residential dwellings within Missoula’s Red-Light District, and enlisted …

Paragenesis Of The Austin Chalk Formation In Southwest Texas, Mitchell C. Sherry

Graduate Student Theses, Dissertations, & Professional Papers

Presented in this study is a detailed investigation of the paragenesis and diagenetic processes of the Austin Chalk Formation in southwest Texas, utilizing a combination of core-based, petrographic, mineralogic, SEM, and geochemical based analyses. This study is conducted on a single whole rock core from an oil and gas producing well in Webb County, Texas. At this distal shelf location within the Maverick Basin, the Austin Chalk Formation consists of foraminiferal wackestones, siliceous wackestones, foraminiferal mudstones, bentonites, and foraminiferal packstone facies. These facies were deposited below wave base through pelagic, hemipelagic, and gravity driven processes. Petrographic and SEM analyses reveal …

Diagenesis And Quartz Grain Provenance Of The Turner Sandstone, Carson Lee Broaddus

Graduate Student Theses, Dissertations, & Professional Papers

Provenance analysis of sedimentary rocks is an essential tool for basin analysis and paleogeographic reconstructions. Numerous tools and analytical methods have been developed over the years to investigate the source of detrital constituents in sedimentary rocks. The Late Cretaceous (Turonian) Turner Sandstone in the eastern Powder River Basin (PRB), WY, and the time equivalent Frontier Formation in the western PRB are commonly described as the remnants of a marginal marine depositional system. However, contradictory evidence exists about the source of those deposits. Here, I present results from a comprehensive scanning electron microscope panchromatic cathodoluminescence (SEM-PCL) analysis of >1200 individual sand-sized …

Farey Recursion And Hyperbolic Dehn Filling, Jose Ebenezer Martinez

Graduate Student Theses, Dissertations, & Professional Papers

In this work, we present a solution to William Thurston's edge gluing equations for Dehn fillings of hyperbolic 3-manifolds. This is done for triangulations that involve the layered solid torus. Our approach uses Farey recursive functions, and we present a Farey recursive function that provides a solution to the gluing equations for any hyperbolic Dehn filling admitting a triangulation by the layered solid torus. We provide examples that demonstrate our solution for multiple 3-manifolds, and study the roots of the corresponding Farey recursive polynomials. As an additional application of our solution, we provide a formula for the complex length of …

Ambient Air Pollution, Hypertensive Disorders Of Pregnancy, And Geomasking In Montana, Elizabeth Rae Susanne Williams

Graduate Student Theses, Dissertations, & Professional Papers

Background: Air pollution is the world’s largest single environmental health risk. Particulate matter air pollution with aerodynamic diameter ≤ 2.5 μm (PM2.5) poses significant health hazards and has been increasing in some parts of the United States in recent decades due to increased wildfire activity. Prenatal exposure to PM2.5 may increase risk of hypertensive disorders of pregnancy (HDPs), though this has not been evaluated in a rural, wildfire-prone context. To develop recommendations to mitigate harmful health effects of PM2.5, more research is needed to understand the precise timing and dose of PM2.5 that is harmful to human health. Such research …

A Case Of Water: A Rhetorical Analysis Of The Legal And Social Effects Of The Arizona V. Navajo Nation Supreme Court Case, Mykel Patrick Greene

Graduate Student Theses, Dissertations, & Professional Papers

The water crisis effecting the Navajo Nation is among the worst in recent memory—a situation that has only been exacerbated by the U.S. Supreme Court’s 2023 5-4 decision in favor of Arizona in the case of Arizona v. Navajo Nation 599 U. S. ____ (2023). This case, which was the culmination of a 20-year legal battle, sought assistance and potential aid from the federal government regarding water usage and assessment. However, considering the Arizona v. Navajo Nation decision, the Navajo will have to manage this crisis alone. This paper will use frame analysis to identify the various frames the Navajo …

Menopause In The Public Sphere: The Consciousness-Raising Practices Of Technical And Experiential Experts, Emma J. Murdock

Graduate Student Theses, Dissertations, & Professional Papers

Menopause is frequently discussed through a biomedical lens, which stresses technical language and knowledge, yet emerging in popular culture is experiential experts sharing how they feel about menopause. This paper analyses Michelle Obama's podcast episode titled “What Your Mother Never Told You” (2022) featuring Dr. Sharon Malone, a medical doctor and menopause experiential expert. Using consciousness-raising and the spheres of argumentation, I analyze how the experiential and technical experts of the podcast address and speak about menopause. This paper aims to question how consciousness-raising can reconstruct the understanding of menopause through an experiential-centric lens by placing personal testimony and experiences …

No Worries, It’S Fine, Lexie E. Loader

Graduate Student Theses, Dissertations, & Professional Papers

In my MFA exhibition, no worries, it’s fine, I depict seemingly mundane objects and places in my paintings to explore underlying themes of the bittersweet. They contain both painful memories and sweet moments, and their complexity gives them authenticity. To only explore the one would be dishonest, as the bitter and the sweet are forever intertwined.

Bittersweet is tied to longing…longing for someone you love when they are not present, for better circumstances while accepting where you are. Longing can propel us forward, one step at a time. It gives us the hope that when we experience pain, the pendulum …

A Soil-Plant-Atmosphere Continuum Model To Simulate Seedling Response To Water Stress, Michael Kurt Kendree Jr.

Graduate Student Theses, Dissertations, & Professional Papers

Most current ecohydrologic models simplify the hydraulics that are at play in plant-water relationships by assuming that the water content within the plant is static. In reality, plants have a relative water content that varies with time in response to environmental stresses. To some extent, variations in plant relative water content are regulated by changes in the osmotic potential of water within plant cells, which contributes to the resilience of plants during periods of water shortage. We present a model that simulates plant water transport and storage within the soil-plant-atmosphere continuum. The model incorporates the role of osmotic regulation in …

Cultivating Access: The Benefits And Challenges Of Using Community Land Trusts To Preserve Farmland And Support Farmers., Meghan Daly

Graduate Student Theses, Dissertations, & Professional Papers

Agricultural land protected by community land trusts (CLTs) is more likely to remain in active production due to the CLT’s ability to enforce land use practices and select tenants committed to farming. While land tenure approaches vary among CLTs, protected agricultural lands typically utilize long-term leases with affordable rents (Ela and Rosenberg, 2020). Such leasing arrangements enable farmers to access land at prices unaffected by escalating land values (Schwartz et al., 2013). The CLT model not only safeguards farmland but also promotes active agricultural production, thereby ensuring local food supply and providing economic opportunities for farmers.

Despite the promising potential …

Better Understanding The Barred Owl, Adam Lee Potts

Graduate Student Theses, Dissertations, & Professional Papers

This thesis research presents an analysis of barred owl nest site selection in an understudied region of their expanded range. The barred owl has dramatically expanded its range westwards over the last 150 years, prompting multiple conflicting reinterpretations of their species account. Hypotheses of range expansion are reviewed to provide context for this study’s research. This study gathers empirical data on nest site selection in the mixed conifer forests of Montana’s Seeley-Swan and Mission Valleys. Eight barred owl nests were located following extensive territory surveys. Field measurements of tree height and diameter using USFS Forest Inventory and Analysis (FIA) plot …

The Biome Within: Conception And Change In The Paradise Valley, Austin Kirchhoff

Graduate Student Theses, Dissertations, & Professional Papers

The Biome Within is an essay collection that meditates on change. Born and raised in the Paradise Valley of southwest Montana, Austin recounts stories from her childhood, painting a picture of rural life in the Valley that contrasts with its modern-day incarnation as a luxury get-away and millionaire’s playground. Even as Austin pines for a time and a place that no longer exists, embodying the nostalgia that she identifies in the Valley’s transplants, the reader comes to understand that the author – and her family’s way of making a living – are culpable in creating the changes that she now …

Water Lake And Other Stories, Allison Rose Levy

Graduate Student Theses, Dissertations, & Professional Papers

This excerpt from the novel Water Lake takes place at an undisclosed time in an undisclosed American location called Water Town. It primarily follows Jason and Holly, who are employees at Water Hardware and lifelong residents of the insular, religious, isolated town. Water Town is in constant industrial and environmental decay and hosts many mysterious natural and social phenomena such as an unusual amount of animal deaths, a gender ratio skewed disproportionately towards men, and a single seal in a local body of water hundreds of miles from the nearest ocean. During an episode of impulsivity induced by neurological trauma, …

Navigating Toxic Identities Within League Of Legends, Jeremy Thomas Miner

Graduate Student Theses, Dissertations, & Professional Papers

Toxicity is an inevitable part of online gaming for many individuals that participate in the activity. How individuals navigate this behavior affects not only the community but the players themselves. In essence, online world environments affect the identity of the individual within them. The magic circle separates the gaming world and the real world into two separate and distinct places, however crystalized selves posits that the identity of an individual in one sphere is part of the individual in another. Understanding the connection between these two ideas gives rise to the question of whether or not toxic behaviors in a …

Ecological Adaptation And Speciation In Chipmunks, Nathanael David Filer Herrera

Graduate Student Theses, Dissertations, & Professional Papers

Understanding how evolutionary and ecological mechanisms promote speciation and adaptation is one of the central challenges of evolutionary biology. Recent advancements in theoretical, methodological, and computational approaches now allow biologists to test long-standing questions regarding the evolutionary history of species. This includes the genomic underpinnings of reproductive barriers and adaptive phenotypes, and the contribution of ecology, geography, and demography in the generation and maintenance of biodiversity. While great strides have been made in understanding the genetic and ecological factors that underlie speciation and local adaptation, many open questions remain. My dissertation first seeks to address questions about how we define …

All Under One Roof: An Ethnographic Commons In The Missoula Public Library, Caitlin Ervin

Graduate Student Theses, Dissertations, & Professional Papers

In 2021 the Missoula Public Library opened in a new state-of-the-art building to include a science museum, a research facility, a family resource center, and a media resource center in addition to the library facilities, all providing free and low-cost programs to the public. This establishment, internally dubbed All Under One Roof (AUOR), offers a window into the culture of Missoula and provides the community myriad resources in one, co-located model that has never been seen in the United States. Using ethnographic methods, this study provides insight into AUOR and the significance of its culture house model as the future …

Linking Life History And Population Dynamics Of An Ice-Associated Seabird, The Kittlitz’S Murrelet (Brachyramphus Brevirostris), Michelle Lynn Kissling

Graduate Student Theses, Dissertations, & Professional Papers

Mechanistic understanding of population dynamics requires linking population change and demographic processes. However, for some species, accurate estimation of population parameters can be difficult owing to their life histories, resulting in reduced or biased inference. Mobile species that are not territorial or use dynamic habitats are susceptible to estimation problems arising from variable exposure to sampling, or temporary emigration, and common approaches to account for it like robust design are not feasible. The outcome is a population mismatch whereby the statistical population, or what was sampled, is not aligned with the biological population, which is what we want to know …