Digital Commons Network^™

Biobehavioral Predictors Of Executive Function Decline In Mid- And Late Life Adults, Cali Anne Caughie

Graduate Student Theses, Dissertations, & Professional Papers

Using data from the Midlife in the United States (MIDUS) Longitudinal Study of Health and Well-Being, this study examined high frequency heart rate variability as a longitudinal predictor of cognitive change in key executive function domains: inhibition, shifting, and updating. This study further explored the interactions between HF HRV and important health factors (inflammation, stress, sleep, and mood and anxiety) in predicting executive function decline.

The results of this investigation demonstrated that while high frequency heart rate variability and inhibition decline were correlated, HF HRV was not a significant predictor of decline in any executive function. However, results did show …

Summer Vacation In The Wild: An Historical And Archaeological Study Of Timber Land Fraud In The Tobacco Plains, Montana, Tyler Jay Rounds

Graduate Student Theses, Dissertations, & Professional Papers

During the 19th and early 20th century, Congress passed several laws intended to allow average Americans the chance to acquire portions of the public domain for their own benefit. However, contemporary observers and historians alike have noted that several of these laws—especially the Homestead Act and the Timber and Stone Act—were instead used by speculators and lumber companies to amass large landholdings by orchestrating and purchasing fraudulent entries. Local historical tradition suggests that Eureka Lumber Company, Bonners Ferry Lumber Company, and J. Neils Lumber Company employed this tactic within the Kootenai National Forest (KNF), though the veracity of such claims …

The Impacts Of Integrating Interdisciplinary, Introductory Computer Science In High School Courses, Jan Roddy

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

All In Due Time: Multi-Trait Assessment Of Elk Acclimation To Translocation, Ellen Marie Pero

Graduate Student Theses, Dissertations, & Professional Papers

Wildlife translocation – the intentional movement of animals – is a crucial conservation tool for restoring species and halting global biodiversity decline. However, this practice is challenging for wildlife, and animals must adjust to their release landscapes for restoration to be successful. The period following release is a vulnerable time for translocated wildlife and determining when and how animals eventually acclimate following releases allows researchers to efficiently tailor post-release management to each species’ needs, thus maximizing the success of translocations while minimizing costs of an already expensive conservation practice. In this dissertation, I investigate changes in the physiological, behavioral, and …

Collaborative Conservation And Backcountry Weed Control: A Case Study Of The Great Burn Proposed Wilderness, Christopher James Prange

Graduate Student Theses, Dissertations, & Professional Papers

Noxious weeds have become a management priority on public lands in the United States. Managing invasive weed populations in natural areas with complex ecosystems presents issues that need a systems-wide approach over long temporal and spatial scales. This broad-scale problem increasingly demands collaborative efforts. While collaborative conservation has become a tool in natural resource management during the 21^st century, it is less commonly applied in weed control in backcountry wilderness areas. Programs that have been initiated are understudied. Accordingly, this research was conducted through semi-structured interviews to gather perspectives of weed professionals involved in a collaborative backcountry weed program …

Investigation Of Emissions And Chemistry Of Formic Acid And Acetic Acid In Wildfire Smoke, Catherine Elizabeth Wielgasz

Graduate Student Theses, Dissertations, & Professional Papers

Formic acid (HCOOH) and acetic acid (CH₃COOH) are two of the most ubiquitous organic acids in the atmosphere. Chemical transport models consistently underestimate HCOOH and CH₃COOH concentrations in environments including fire smoke, implying our incomplete understanding of their global budget. Emissions and secondary production of HCOOH and CH₃COOH within complex mixtures in fire smoke is uncertain.

I used measurements from the NSF/NCAR C-130 aircraft during the Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption, and Nitrogen (WE-CAN) campaign to investigate emissions and photochemical production of HCOOH and CH₃COOH from smoke plumes. First, …

Uncovering Cooperation In Housepit 54, Bridge River, British Columbia, Canada, Megan Denis

Graduate Student Theses, Dissertations, & Professional Papers

There is a significant amount of literature regarding the theory of cooperation, as well as ethnographies and data from modern populations that clearly show cooperation, yet it is difficult to tease that information out of the archaeological record. My thesis will focus on floors IIi to IIc of Bridge River’s Housepit 54 in British Columbia, Canada, which extends from the Bridge River 2 period to the Bridge River 3 period and includes two incidents of resource stress and one of resource plenty. These times of fluctuating resource availability should result in the population utilizing different approaches to social organization. By …

Non-Indian Reservations, Joshua Matthew Rosenau

Graduate Student Theses, Dissertations, & Professional Papers

This thesis is a skeptical treatment of the logical distinctions presumed to exist between “Indian” and “non-Indian” people. Despite representing 99 percent of the U.S. population, “non-Indians” represent a legal identity which has no explicit definition. The basis for the U.S. Supreme Court’s decisions regarding non-Indians and Indians rests not on any objective, empirical or logical criterion or proof, but rather on the “assumption of a ‘guardian-ward’ status. This thesis investigates this assumption, and recommends that we suspend judgment on whether the difference between “Indians” and “non-Indians” can be determined either by logical argument or by legal assumption.

Development Of A Novel In-Situ Chemical Sampler For Aquatic Systems, Alec W. Johnson

Graduate Student Theses, Dissertations, & Professional Papers

There has been a long-standing need to study Dissolved Organic Carbon (DOC) within aquatic systems. DOC is an important water quality parameter that provides insights into ecological and carbon cycle processes in aquatic systems. DOC is not easily studied due to traditional, labor-intensive sampling methods. Often, optical (e.g. fluorescence) proxy estimations for DOC are used instead of directly sampling for DOC. Using either low frequency measurements or proxy estimations for DOC can lead to inadequate understanding of the natural processes that control DOC in aquatic systems.

This thesis outlines a in-situ sampler that will be capable of collecting, preserving, and …

Extending Bootstrap Aggregation Of Neural Networks For Prediction With An Application To Covid-19 Forecasting, Mohsen Tabibian

Graduate Student Theses, Dissertations, & Professional Papers

The aim of this study is to improve the forecasting accuracy of artificial neural networks (ANNs) and construct prediction bands for ANN models. The focus is on forecasting for epidemiological purposes, and in particular, the problem of predicting new case and death counts from seven to h days into the future for spatially contiguous regions. The task poses several challenges: datasets are quite small, and both spatially and temporally correlated. To overcome these, the methods attempt to exploit information induced by spatial and temporal dependencies. More importantly, we have developed a fusion of ANNs and bootstrap methods. Bootstrap aggregation (bagging) …

No Answering Riot, Jacob Z. Bienvenue

Graduate Student Theses, Dissertations, & Professional Papers

I left this morning for Portland, Oregon—could be for good. Told my dear mother I was taking a day trip then hopped in her dinged up black Audi and felt the thing hum alive beneath me. Her speakers were still good, so I threw on a playlist with Bob Dylan and Woody Guthrie and all of the ragged traintrack prophets and went roaring out of those gilded hills for hopefully ever. There was no traffic getting to Sacramento; it took me just twenty minutes to hit the I-5 North juncture and after that I went peeling up the central flatlands …

A Personal History Of Invasive Hands And Endangered Lovers, Samuel Paul Boudreau

Graduate Student Theses, Dissertations, & Professional Papers

I thought I could be ridden hard and put away wet, wet, wet. I thought death and rape and drunkenness and unrequited love were functions of a typical life, a this-is-how-it-goes kinda world. But, as I’ve emerged from hellish muck, there has been a realization: the way we treat each other and the soil, the aching earth, needs to change. “A Personal History of Invasive Hands and Endangered Lovers” explores the relationship between intimacy and pain through a history of ecology and consumption, a melancholy of sorts. It amplifies trauma as a call-to-action and refuses to sit and take it. …

Toward A Child-Friendly Worldview Measure, Shailee Rose Woodard

Graduate Student Theses, Dissertations, & Professional Papers

Worldview is an individual difference construct that is linked to various social, behavioral, and mental health outcomes, such as prejudice (Greenberg & Arndt, 2011), adaptive versus maladaptive behaviors following a natural disaster (Call, 2012), and PTSD symptoms (Jinkerson, 2016). However, very little is known about how worldviews develop. Research on child and adolescent worldviews is greatly impeded by the lack of a child-friendly worldview measure. This dissertation project aims to fill this gap by developing and validating such a measure. This 20-item measure, the Unified Worldview Measure – Child Form (UWM-CF), was adapted from a previously-validated adult measure of worldviews, …

Fxr Agonists Induce Distinct H-12 Structural States, Vikash Kumar

Graduate Student Theses, Dissertations, & Professional Papers

The nuclear receptor ligand-binding domain (LBD) is a highly dynamic entity. The FXR LBD shows multiple low-energy conformational states of the activation function-2 (AF-2) coregulator binding surface upon ligand binding, indicating the complexity of FXR activation. However, it is unknown how ligand binding leads to different conformational states within the AF-2 region centered on helix 12 (H-12) of the LBD. Here we observe the conformation of the coregulator binding surface (H-12 specifically) of FXR upon ligand binding in solution using fluorine-19 (19F) nuclear magnetic resonance (NMR) and simulations of this surface using molecular dynamics. Fluorescence anisotropy of fluorescein-labeled coregulator peptides …

Optimal Construction Of A Layer-Ordered Heap And Its Applications, Jake Pennington

Graduate Student Theses, Dissertations, & Professional Papers

The layer-ordered heap (LOH) is a simple data structure used in algorithms that perform optimal top-$k$ on $X+Y$, algorithms with the best known runtime for top-$k$ on $X_1+X_2+\cdots+X_m$, and the fastest method in practice for computing the most abundant isotopologue peaks in a chemical compound. In the analysis of these algorithms, the rank, $\alpha$, has been treated as a constant and $n$, the size of the array, has been treated as the sole parameter. Here, we explore the algorithmic complexity of LOH construction with $\alpha$ as a parameter, introduce a few algorithms for constructing LOHs, analyze their complexity in both …

Species Selection And Plantation Management In Enrichment Planting With Native Timber Species In The Panama Canal Watershed, Abigail A. Marshall

Graduate Student Theses, Dissertations, & Professional Papers

Large areas of the Panama Canal Watershed have been converted to monocultures of teak (Tectonia grandis), a non-native timber species that is generally not providing hoped-for economic and ecological benefits of Forest Landscape Restoration. Enrichment planting offers a potential strategy for revitalizing these underperforming plantations through the addition of high-value, native species to the understory, but more information is needed to guide implementation and management in this region and other tropical areas. I assessed the performance of six promising native species (B. crassifolia, D. retusa, D. oleifera, H. alchorneoides, P. pinnatum, T. amazonia) as an enrichment …

A Reintroduction Retrospective: Comparative Fisher (Pekania Pennanti) Survival And Prey Habitat Use In The Cascade Mountains Of Washington State, Tanner S.T. Humphries

Graduate Student Theses, Dissertations, & Professional Papers

Increasing human impacts on biodiversity highlight the global need for ecological restoration. For many wildlife species, reintroduction is necessary to re-establish populations in parts of their historic range where they have been extirpated. Reintroduction efforts are commonly used to help restore ecosystem integrity, but are often expensive, time consuming, and unsuccessful at generating self-sustaining populations. Thus, a more complete understanding of the factors affecting restoration success is important for ensuring successful outcomes and responsible stewardship. Fishers (Pekania pennanti) are one of the most commonly reintroduced carnivores in North America, but the success of such efforts is highly variable, …

A Moral Influenza: An Historical Archaeological Investigation Of The Prohibition Era In The United States 1920-1933, Kelli Michele Casias

Graduate Student Theses, Dissertations, & Professional Papers

The following exploration of National Alcohol Prohibition in the United States employs an interdisciplinary approach to understand the impetus of the large-scale defiance of liquor laws and to identify the physical manifestations of the social process of mass resistance in the archaeological record. Historical documentation, newspaper publications, oral histories, landscape analysis of road development in Montana, and an archaeological survey of a mountain homestead site where manufacturer of illicit alcohol took place are used to contextualize the Prohibition Era from the perspective of the offender. The research goals of this work are varied and include documentation of the archaeological footprint …

Going Back Through, Cassandra Rae Lee

Graduate Student Theses, Dissertations, & Professional Papers

These are poems from between 2018 and 221 during which time the author continuously sought out romance, rearranged the furniture , and adopted animals. Amidst this unresolve, primary preoccupations were closeness, what we accrue+conceal, and the forces that guide poems into arrangement. Secondary preoccupations were dust, amnesia, distraction, conduits, and the seething junction of forces where contradiction can be held.

Quantifying Bedrock Recharge In Two Paired Mountainous Watersheds, Kimberly Bolhuis

Graduate Student Theses, Dissertations, & Professional Papers

This study focuses on 1) estimating the magnitude of bedrock recharge and 2) mean transit time as a function of bedrock permeability in two paired catchments underlain by different lithology. Networks of bedrock wells and stream gauges were installed in two adjacent catchments of approximately the same size in west central Montana. Fracture network properties for both lithologies were characterized from borehole core logging and scan lines on exposed outcrop. Recharge was evaluated using the Water Table Fluctuation (WTF) method on bedrock well hydrographs installed in both catchments. Stable water isotope samples, collected approximately monthly, from precipitation and stream water …

The Radicalism Of Rebecca Felton: Reforming Southern Masculinty And Creating And Destroying History: Butte, Montana’S Model City Program, 1968-1975, John C. Stefanek

Graduate Student Theses, Dissertations, & Professional Papers

This professional paper is made up of two individual papers required for the M.A. degree in history. In my first paper, I discuss the radical suffragist Rebecca Felton. In 1897, Felton spoke to the Georgia Agricultural Society. Felton, a native Georgian who would later become the first female U.S. senator, gained prominence in the U.S. South as a politician, suffragist, and white supremacist. Her speech, “Woman on the Farm,” discussed the economic struggles of southern farmers. Felton’s speech also addressed a variety of controversial issues including agricultural economics on the farm, prison reform, and temperance. From the 1870s until her …

The Influence Of Wildland Urban Interface Areas On Resource Assignments To Large Wildland Fires, Kurt Swimley

Graduate Student Theses, Dissertations, & Professional Papers

We examine the relationship between U.S. wildfire resource assignments and fire proximity to inhabited areas. Climate change and previous vegetation buildup have enabled more severe fire seasons, while more structures are being developed near vegetated, wildland areas. These changes have contributed to a steep increase in the overall cost of wildfire management, the annual costs of which regularly rise into the billions (NIFC, 2021). Still, the extent to which each driver of suppression costs contributes to the increase in spending is not entirely understood. Previous studies have shown that more suppression resources are allocated to fires near inhabited areas, …

Conservation And Conversation In The Anthropocene, Brittany Alyse Garner

Graduate Student Theses, Dissertations, & Professional Papers

The driving questions of this dissertation consider both the scientific and communicative understanding of conservation and extinction in the Anthropocene. Overall, this dissertation portfolio explores this topic via genetic and genomic data, international policy, big data analytics, human values, and the performing arts. Chapter 1 analyzes the use of genetics and genomics in conservation, finding multiple case studies within and outside of peer-reviewed journals. Chapters 2 and 3 quantify and describe the use of genetic principles and tools in a global species extinction risk assessment, the IUCN Red List, and finds low overall use but high potential for genetics to …

Devastation And Displacement: The Destruction Of Native Communities As A Result Of Specifically The Garrison Dam On The Missouri River In North Dakota And The Dalles Dams On The Columbia River In Oregon, Farryl Elisa Hunt

Graduate Student Theses, Dissertations, & Professional Papers

ABSTRACT MASTER’S THESIS

Devastation and Displacement: The Destruction of Native Communities as a Result of the Garrison Dam on the Missouri River in North Dakota and the Dams on the Columbia River in Oregon

By Farryl Elisa "Lisa" Hunt

This master's thesis in anthropology is a cross-cultural analysis that explores two intersecting yet distinct discourses of destruction and displacement for two groups of Native people in Oregon and North Dakota. The building of The Dalles Dam in Oregon and The Garrison Dam in North Dakota damaged thriving livelihoods due to the loss of irreplaceable flooded areas.

This thesis will utilize …

The Effect Of Test Difficulty On Perceived Memory Performance, Phoebe S. Bean

Graduate Student Theses, Dissertations, & Professional Papers

Neuropsychological testing is a critical element of the assessment and treatment of a host of neurological disorders, such as Alzheimer’s Disease, stroke, and traumatic brain injury. Certain non-neurological variables may also affect an individual’s test performance. Such secondary factors may include current psychiatric issues, chronic pain, sleep, and the effort put forth during testing. Little is known, however, about the effect the testing process itself has on people’s actual and perceived cognitive abilities. For example, the process of undergoing memory testing may, through a variety of mechanisms, influence memory performance and impact the person such that their view of their …

Discourse Of Renewal: A Qualitative Analysis Of The University Of Montana’S Covid-19 Crisis Communication, Haley Renae Gabel

Graduate Student Theses, Dissertations, & Professional Papers

The COVID-19 pandemic has proven to be a public health crisis that has affected lives and impacted organizations across the world. The pandemic has interrupted student learning and threatened universities nationwide. Crises are trying times for organizations, and when faced with a crisis, an organization has an obligation to keep its members informed; therefore, it must carefully choose how to respond and communicate about the crisis. This study uses discourse of renewal theory as a lens to analyze the University of Montana’s communication about COVID-19, studying 37 pages of university emails and documents on the university website. Results indicate that …

Management And Conservation Of Westslope Cutthroat Trout In An Impacted, Connected River System, Troy Weant Smith

Graduate Student Theses, Dissertations, & Professional Papers

Westslope cutthroat trout Oncorhynchus clarkii lewisi (WCT) is a native species of high conservation value that historically exhibited partially migratory behavior throughout its range. Long-term persistence of WCT is threatened by human habitat modification, fragmentation, introduction of non-native species, and hybridization. As a result of these changes, remnant populations in Montana have shifted toward resident populations in headwater systems and away from migratory populations in larger connected river networks. This is compounded by the historic introduction of rainbow trout O. mykiss (RBT) that hybridize with WCT, especially in larger river habitats. Rock Creek in western Montana, USA was historically managed …

Monitoring The Wetland Landscape: White-Faced Ibis (Plegadis Chihi) Breeding Habitat As A Model Assemblage, Shea P. Coons

Graduate Student Theses, Dissertations, & Professional Papers

Wetlands structure landscape biodiversity by providing critical habitat to numerous fish and wildlife species. However, climate change, growing human populations, and shifting land use practices strain limited water supplies that sustain wetlands in the semi-arid western US. Conserving a wetland network with prominent value to wildlife is paramount to ensure future security of habitat and ecosystem processes. Here, I use white-faced ibis (Plegadis chihi; hereafter ‘ibis’) breeding colonies as a model system to identify and monitor a landscape-scale wetland network across the semi-arid western US. Ibis serve an important role in marking ecologically important wetland networks because they require a …

Ensemble Protein Inference Evaluation, Kyle Lee Lucke

Graduate Student Theses, Dissertations, & Professional Papers

The Protein inference problem is becoming an increasingly important tool that aids in the characterization of complex proteomes and analysis of complex protein samples. In bottom-up shotgun proteomics experiments the metrics for evaluation (like AUC and calibration error) are based on an often imperfect target-decoy database. These metrics make the inherent assumption that all of the proteins in the target set are present in the sample being analyzed. In general, this is not the case, they are typically a mix of present and absent proteins. To objectively evaluate inference methods, protein standard datasets are used. These datasets are special in …

Super-Resolution Imaging Of Remote Sensed Brightness Temperature Using A Convolutional Neural Network, Kellen A. Donahue

Graduate Student Theses, Dissertations, & Professional Papers

Steady improvements to the instruments used in remote sensing has led to much higher resolution data, often contemporaneous with lower resolution instruments that continue to collect data. There is a clear opportunity to reconcile recent high resolution satellite data with the lower resolution data of the past. Super-resolution (SR) imaging is a technique that increases the spatial resolution of image data by training statistical methods on simultaneously occurring lower and higher resolution data sets. The special sensor microwave/imager (SSMI) and advanced microwave scanning radiometer (AMSR2) brightness temperature data products are well suited to super-resolution imaging, and SR can be used …