Digital Commons Network^™

Probing Earth Deformation In Response To Localized Hydrologic Mass Loading, Susitna River Basin, Alaska, Andrew Parker Keene

Graduate Student Theses, Dissertations, & Professional Papers

Surface mass loading contributes a ubiquitous signal to GPS time series that can be modeled and removed for individual sources. We utilize nine GPS stations in the Susitna River watershed, Alaska, to investigate surface displacements from surface mass loading. We find that modeling atmospheric surface pressure and regional hydrologic mass reduces root mean square (RMS) error by 27-39% for all GPS time series. We observe moderate correlation between residual time series pairs and distance, with elevation differences influencing the strength of this correlation. Seasonal horizontal and vertical displacements are observed after removal of all loading models; stations displace downward and …

Tectonic Geomorphology Of The Ne Clark Canyon Reservoir Area, Beaverhead County, Montana, Ian Robinson Thomsen

Graduate Student Theses, Dissertations, & Professional Papers

The Clark Canyon Reservoir occupies the northern Red Rock Valley in Beaverhead County, southwestern Montana. The region is a part of the northern Basin and Range province of western North America. It is characterized by a series of north-south trending extensional basins that have served as sediment traps since their formation. The Red Rock Valley is drained by the Red Rock River, which flows from Lower Red Rock Lake north to the Clark Canyon Reservoir at its confluence with the Beaverhead River. This river system has been active in the Red Rock Valley since the Miocene epoch.

This study characterizes …

Making The Most Of People We Do Not Like: Capitalizing On Negative Feedback, Christopher Edward Anderson

Graduate Student Theses, Dissertations, & Professional Papers

Capitalization was first articulated by Langston (1994) to describe how individuals increase their own positivity by sharing good news with others. This study tests the idea that sometimes people share positive news with others they do not like in an attempt to savor their dissatisfaction with shared accomplishments. A fully crossed randomized 2 X 2 experiment was used to set an initial impression (positive or negative) followed by an interview procedure where the participants would disclose some recent positive event and the confederate interviewer would provide feedback (positive or negative). This procedure was used to test capitalization processes in a …

The Exploration Of Clinicians’ Lived Experiences In Culturally Adapting Empirically Supported Treatments For American Indian And Alaska Native Populations, Maegan Rides At The Door

Graduate Student Theses, Dissertations, & Professional Papers

This study investigated the lived experiences of clinicians who have culturally adapted Empirically Supported Treatments (EST) for American Indian/Alaskan Native (AI/AN) populations. The central research question for this investigation was: What is the experience of mental health providers in culturally adapting empirically supported treatments for American Indian and Alaska Native populations? A guided semi-structured interview protocol was used to interview eight participants. Giorgi’s descriptive phenomenological psychological method was used to develop a general psychological structure representing eight essential constituents. They are: developing an understanding of cultural adaptation, focusing on building and maintaining therapeutic relationships, immersion and engagement with community, experiencing …

The Effects Of Forest Gaps On Animal Communication Networks, Cedar Arran Mathers-Winn

Graduate Student Theses, Dissertations, & Professional Papers

To avoid predation, many animals have evolved complex systems of anti-predator communication. Alarm calls are a key component of anti-predator behavior in many birds, and can provide detailed information about predators. Additionally, many birds and mammals produce and respond to each other’s alarm calls, creating a complex communication network. Furthermore, individuals may give alarm calls in response to the alarm calls of others nearby, without actually seeing a predator. This makes possible the spatial spread of alarm information, which can result in complex communication networks extending over a large area. However, this requires suitable habitat in which birds will be …

Development Along Rattlesnake Creek: An Assessment Of Stream Health, Channel Form, And Land Cover, Christopher D. Miller

Graduate Student Theses, Dissertations, & Professional Papers

Using existing water quality data, historical aerial photographs, and recent orthoimagery, this research assessed how the environmental conditions of Rattlesnake Creek near Missoula, Montana have changed over nearly 90 years of human alteration of the Rattlesnake valley. To characterize stream health, the following indicators were investigated: fish genetic composition and species distribution, water temperature, streamflow, and nutrient levels. Five overlapping aerial photos from 1929 were georectified and compared to 2015 orthoimagery to assess changes in channel form (particularly channel straightening) and land cover across the Rattlesnake Creek valley bottom. Results indicate that trout species in Rattlesnake Creek have hybridized, in …

Ecological Wonder In Annie Dillard's Pilgrim At Tinker Creek, Mary Morgan Beavers

Graduate Student Theses, Dissertations, & Professional Papers

Through a close reading of Annie Dillard’s Pilgrim at Tinker Creek, this thesis presents an argument for the ecological value of a sense of wonder in our engagements with the more-than-human world. The first chapter explores Dillard’s desire to see truly, like the Romantics, and follows her journey of attention into the natural world, analyzing her epiphanic, enchanting, and enlivening experiences of deeply intimate engagement with things both minute and massive. The second chapter considers how Dillard’s practice of close attention opens her perception in a way that allows her to see the full reality of the more-than-human world, including …

No Man's Land, Jesse Daniel Durovey

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Water Use In Confined Animal Feeding Operations (Cafos) In Minnesota: Who’S Keeping Track?, Dara Meredith Fedrow

Graduate Student Theses, Dissertations, & Professional Papers

Confined animal feeding operations (CAFOs) are highly concentrated feedlots that raise large numbers of livestock with an emphasis on efficiency and maximizing output. Hog and dairy feedlots in Minnesota are shrinking in number, yet growing in size. In hand with the rise of CAFOs, water scarcity is a growing concern as the effects of climate change worsen and the human population increases. Though Minnesota is a state of abundant water, it is not evenly distributed throughout the state raising concerns about sustainable water usage.

This paper describes and analyzes how Minnesota’s water appropriation permit system is overseeing water usage in …

Zero-Knowledge De Novo Algorithms For Analyzing Small Molecules Using Mass Spectrometry, Patrick Anthony Kreitzberg

Graduate Student Theses, Dissertations, & Professional Papers

In the analysis of mass spectra, if a superset of the molecules thought to be in a sample is known a priori, then there are well established techniques for the identification of the molecules such as database search and spectral libraries. Linear molecules are chains of subunits. For example, a peptide is a linear molecule with an “alphabet” of 20 possible amino acid subunits. A peptide of length six will have 20⁶ = 64, 000, 000 different possible outcomes. Small molecules, such as sugars and metabolites, are not constrained to linear structures and may branch. These molecules are …

Quantifying Coat Color Phenology Of Sympatric Snowshoe Hares And Weasels, Brandon Murray Davis

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Why The Weird Wings? Investigating The Morphology, Function, And Evolution Of Unusual Feathers In Pigeons And Doves (Columbidae), Robert Lawrence Niese

Graduate Student Theses, Dissertations, & Professional Papers

The feathers of the wing that power flight in birds (the remiges) are morphologically constrained by the demands of aerial locomotion, but peculiar morphologies exist in many taxa in spite of these constraints. In the family Columbidae (pigeons and doves) in particular, we found that atypical remex morphologies have evolved dozens of times and occur in over a third of all species in the family. In members of the genus Columbina, we tested the sound-producing abilities of modified P7 feathers and determined that they are sonations that serve a signalling function during flight. In 56 species we identified a highly-attenuated …

Measuring Recidivism Risk Outcomes: A Pilot Project In Collaboration With The Flathead Reservation Reentry Program, Desiree Lacy Fox

Graduate Student Theses, Dissertations, & Professional Papers

Background: Native Americans have suffered from vast losses of land, traditional ways and practices, language, and ability to pass on traditional knowledge; and those losses have led to current day health and wellness disparities, as well as small but tangibly different tribal populations. While Native Americans make up a disproportionate number of those involved in the criminal justice system, creating an overrepresentation of Native Americans incarcerated in jails and prisons relative to their overall population size, they still tend to be underrepresented in the creation of validated recidivism measures. Risk assessment tools, such as the Level of Service Index-Revised (LSI-R), …

Applications Of Asymptotic Methods: Analyzing Mathematical Models In Neuroscience And Describing Fast Dynamics Of A Trajectory In The Vicinity Of A Chaotic Attractor, Denis Mikhailovich Shchepakin

Graduate Student Theses, Dissertations, & Professional Papers

The current dissertation focuses on two unrelated subjects: modeling in Neuroscience applications and Chaos Theory.

Neurons are units of the nervous system that receive, conduct, and transmit information to each other and target tissue via electrical signaling. One of the mechanisms of the signal transduction is through signaling molecules called neurotransmitters. Glutamate is the predominant excitatory neurotransmitter in the mammalian and human central nervous system. However, the mechanism of regulation and sensation of the glutamate via glutamate receptors and transporters is not completely understood.

We discuss currently existing models of glutamate receptors and transporters, and their main problem: the overparameterization …

New, Multi-Scale Approaches To Characterize Patterns In Vegetation, Fuels, And Wildfire, Christopher Jacob Moran

Graduate Student Theses, Dissertations, & Professional Papers

Pattern and scale are key to understanding ecological processes. My dissertation research aims for novel quantification of vegetation, fuel, and wildfire patterns at multiple scales and to leverage these data for insights into fire processes. Core to this motivation is the 3-dimensional (3-D) characterization of forest properties from light detection and ranging (LiDAR) and structure-from-motion (SfM) photogrammetry. Analytical methods for extracting useable information currently lag the ability to collect such 3-D data. The chapters that follow focus on this limitation blending interests in machine learning and data science, remote sensing, wildland fuels (vegetation), and wildfire. In Chapter 2, forest canopy …

Disentangling The Relations Between Acute Stress, Chronic Stress, And Prospective Memory, Brandon Taylor Stewart

Graduate Student Theses, Dissertations, & Professional Papers

Given the importance and prevalence of Prospective Memory (PM) in daily life and the common experience of stress, it is critical to understand the relations between them. Despite a growing literature base, the answers to some of the simplest questions about these relations remain unanswered. The present study was designed to investigate the relations between both acute and chronic stress and time- and event-based PM. Several methodological features make this study unique and may contribute to a broadening of our understanding of PM in daily life. The results of the present study revealed that chronic stress was negatively correlated with …

Learning From Stone: Using Lithic Artifacts To Explore The Transmission Of Culture At Bridge River, British Columbia, Anne V. Smyrl

Graduate Student Theses, Dissertations, & Professional Papers

Inherent in all tool-making traditions is the necessity of teaching the next generation of toolmakers. The learning process, although crucial to our understanding of past societies, is difficult to study archaeologically, due to its intangibility. However, some technologies leave visible traces of their production. Key among these are chipped stone tools, known as lithics, which leave distinct archaeological traces of each part of the creation processes. Modern experimenters have recreated these processes, and as a result, have revealed archaeologically-visible differences between novice and expert knappers. These can be identified in archaeological lithic assemblages, and serve as a starting point for …

Jubah And Nashoba: An Artful History, Theodore Cecil Decelles

Graduate Student Theses, Dissertations, & Professional Papers

This creative dissertation unites art and history by writing a play using extensive historical research. The main body of work focuses on events surrounding the Natchez Revolt of 1729. The Natchez nation and colonial Louisianans attempted to accommodate each other by reaching a middle ground. Nonetheless, incivility culminated in a massacre at Fort Rosalie. The Natchez experienced profound sociopolitical changes that resulted in a downgrade of female power. North American history asserts many female chiefs interacted with colonial male leaders. Even so, female chiefs have remained at the margins of history. This creative work focuses on the hidden history behind …

Student's Self Discovery Of Right Triangle Trigonometry., Elizabeth Dereu

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Research has shown that right triangle trigonometry poses a significant learning challenge for high school geometry students. One potential source of this challenge is the tendency for students to experience right triangle trig as an exclusively action-oriented set of strategies (i.e. SOHCAHTOA). This article describes a teaching experiment where students built understanding of right triangle trig using a unique set of manipulatives and direct measurement. Results of the experiment show that the lessons provided opportunities for students to develop their understanding beyond action-oriented strategies.

Flipped: The Lives Of Those With Mental Disorders, Teresa K. Hoskins

Undergraduate Theses, Professional Papers, and Capstone Artifacts

This collection of four short stories focus on how society perceives those with mental disorders, the stigma associated with those disorders, and how both of these affect the people who have mental disorders. The stories are designed to give a general audience insight into the lives of those with various mental disorders. In everyday settings, these stories revolve around ordinary actions of the characters, with and without mental disorders. Each story will contain two parts, the first part is a record of the incident from the perspective of a person without a mental health diagnosis and who is unrelated to …

The Effect Of Perception Biases On Associated Value Of Stimuli, Jordan Broussard

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Negative and positive stimuli appear to have their own unique effects on mood, behavior, and even underlying perceptions. Previous experiments have shown that people have the tendency to focus more on negative stimuli than positive; this is referred to as the “negativity effect”. The present study examined this bias, as well as the level of truth that people associate with positive or negative stimuli. In this experiment, students were split into groups and given either a “positive” or “negative” news article to read. Then, they were presented with two scenarios consisting of professors providing either “negative” or “positive” feedback to …

Effects Of Pag1 On Src-Family Kinase Trafficking In Neuroblastoma Cells, Makenzie E. Mayfield

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The receptor tyrosine kinases (RTKs) are known to help regulate cell behaviors including differentiation, proliferation and migration during embryonic development of the neural crest. RTKs are believed to initiate signaling cascades in response to extracellular cues in part by controlling localization of Src-family kinases (SFKs). The scaffolding protein PAG1 binds SFKs and is believed to influence SFK activity and location within the cell by promoting interaction of SFKs with regulatory proteins and by drawing SFKs into different components of the endocytic pathway. By targeting the PAG1 gene in SH-SY5Y neuroblastoma cells with CRISPR/Cas9 plasmids, we created PAG1-mutant cell-lines in which …

A Hydrogen-Bond Stabilized Mechanism Of Oxygen Evolution In Photosystem Ii: A Proposed Computational Experiment, Christopher King

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The ability of plants to take in water and release oxygen into the atmosphere is crucial to the survival of life on Earth. During photosynthesis, water is oxidized to O₂ (dioxygen) at the Oxygen Evolving Complex (OEC) of Photosystem II. Structurally, the OEC resembles a box with an open lid, consisting of metal atoms (four manganese and one calcium) bridged by oxygen atoms. The mechanism of action of this complex, however, is not well understood. Various mechanisms have been proposed in recent years to explain how the OEC oxidizes water to dioxygen, but all of these mechanisms contain gaps …

Canis Lupus (Gray Wolf) Pup Survival In Yellowstone National Park, Anne Marie Jehle

Undergraduate Theses, Professional Papers, and Capstone Artifacts

The aim of this study was to describe gray wolf (Canis lupus) pup survival rates throughout the summer months in Yellowstone National Park. Understanding pup survival has implications for trends in pack and population age structure, cooperative breeding ecology and other breeding tendencies, social hierarchies, and population fitness, among other elements of species-specific population ecology. A general understanding of trends in pup survival is also relevant to state and federal land that allow gray wolf harvest. Understanding such trends and survival ecology gives managers and biologists the opportunity to evaluate gray wolf populations at a more comprehensive level and implement …

Obesity In Postmenopausal Rural Women: Clinical And Psychological Prevention And Treatment Techniques, Julliette T. Lucas

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Obesity has become increasingly pervasive in rural areas of the United States as access to high calorie food increases, access to nutrient-dense food decreases, and lifestyles become more sedentary. Effective and accessible treatment and prevention techniques for obesity are critical public health concerns that will persist into the future. As the global population grows older and more obese, treatments tailored to older adults will only become more important. As postmenopausal women have differences in physiology from both younger women and older men, treatments will need to be tailored to fit their specific needs. Populations of older women in the United …

Looking Past, Looking Forward: America's National Parks, Archaeology And Climate Change, Rachel Marie Blumhardt

Undergraduate Theses, Professional Papers, and Capstone Artifacts

America’s National Parks are rich with cultural history, flora, fauna and some of nature’s most impressive landscapes. As climate change continues to accelerate, these parks and their cultural and natural resources are being threatened. In this project, I will present a colorful, informational booklet that concentrates on 4 specific parks: Yellowstone National Park, National Park of American Samoa, Glacier Bay National Park and Mesa Verde National Park. I will focus on the archaeology and cultural significance of these parks, while also examining the ways that climate change is putting these, and other associated assets of the parks, at risk. I …

Investigating A Macro Level Trial Tax: An Analysis Of The Relationship Between A Circuit's Plea Proportion And Median Sentence Length In U.S. Federal Courts, Denise Lafontaine

Undergraduate Theses, Professional Papers, and Capstone Artifacts

This study investigates the relationship between the proportion of cases resolved by plea in the federal court circuits and the median sentence length of those circuits. Through OLS regression, this study models the relationship, controlling for variation in circuits, year, and violent crime proportion. With an understanding of two common theoretical frameworks surrounding the trial tax discussion, this study theorized under a focal concerns perspective that as the proportion of cases resolved by plea in a circuit increases, the median sentence length of that circuit would decrease. The results of this study are consistent with results of prior research showing …

Trends In Opinion Writing & Consensus: The Roberts Court, Marti Auburn Liechty

Undergraduate Theses, Professional Papers, and Capstone Artifacts

No abstract provided.

Barriers To Implementing A Single-Use Plastic Bag Ban In Missoula, Tess Elizabeth Parker

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Single-use plastic bags have been in the media spotlight over the past several years due to their harmful environmental impact. Key issues include accumulating waste and litter pollution. The City of Missoula should enact a bag ban due to its environmentally conscious culture. Discussed in the paper are potential barriers and examples of successful bans and how to apply them locally.

Through The Eyes Of Locals: A Changing Climate In Bolivia, Jacob D. Rex

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Deforestation and Agricultural Land-Use Change in Bolivia as a Function of Socio-Economic Realities.

This research combines semi-structured interviews of key informants and local participants, as well as field observations, which were conducted between January and April of 2019 in the Departments of Santa Cruz & Chuquisaca.