Digital Commons Network^™

Generating Peptide Mass Spectrometry Ground Truth Data, Jessica L. Henning, Rob Smith

Graduate Student Theses, Dissertations, & Professional Papers

Very few quantitative evaluations exist for precursor mass spectrometry data due to the lack of tools for enabling the manual feature finding necessary to generate this data. Other lacks the ability to capture, edit, save, and view precursor mass spectrometry data. We present JS-MS 2.0, a software suite that provides a dependency-free, browser-based, one click, cross-platform solution for creating precursor ground truth. The software retains the first version’s capacity for loading, viewing, and navigating MS1 data in 2- and 3-D, and adds tools for capturing, editing, saving and viewing isotopic envelope and extracted isotopic chromatogram features. The software can also …

Implementation Of A Dose Response To Wood Smoke Pm: A Potential Method To Further Explain Cvd In Wildland Firefighters., Dylan Richmond, John Quindry, Christopher T. Migliaccio, Brent Ruby

Graduate Student Theses, Dissertations, & Professional Papers

The presentation of cardiovascular disease (CVD) and comorbidities in aging and retired wildland firefighters (WLFF) continues to be one of the top health priorities to address by The United States Forest Service. In the past 20 years, experts at multiple meetings and conferences have confronted this growing concern as a formal call to action to investigation the individual components related to working in the wildland fire setting. The inhalation of wood smoke particulate matter (PM) shows evidence of altering homeostasis in WLLF’s in the areas of oxidative stress, inflammation, and arterial stiffness, all of which contribute to the development of …

Conceptions And Receptions: A Case Study Analysis Of Community Engagement At Four Local Museums, Mary L. Casey

Graduate Student Theses, Dissertations, & Professional Papers

The theme of community engagement has been a prevalent topic of debate and discussion among museum professionals across the country, and so this thesis seeks to examine how four local museums connect with their local audiences in meaningful and successful ways. I focus on local museums because they have the unique opportunity to intimately engage their immediate community’s perceptions of identity and heritage, and relate the interpreted past in innovative ways that effectively resonate with the contemporary lives of current residents.The Historical Museum at Fort Missoula, Strawbery Banke Museum, The Tuck Museum of Hampton History, and the James House Museum, …

Shuttles In Wonderland: Assessing The Perceived Impact To Residents’ Quality Of Life Based On The Proposed Implementation Of A Voluntary Shuttle System In West Yellowstone, Mt, Carter Wyatt Bermingham

Graduate Student Theses, Dissertations, & Professional Papers

As visitation to the national parks across the United States continues to increase, more and more park service units are exploring the possibility of implementing alternative forms of transportation to help mitigate some of the negative side effects associated with vehicle-related congestion issues. Although research efforts have examined the role of alternative transportation systems (ATS) in helping to improve the visitor experience in the national parks, fewer research efforts have focused on the impacts of these transportation systems on the affiliated gateway community, particularly with respect to the perceived impacts an ATS may have on quality of life in gateway …

Semivariogram Methods For Modeling Whittle-Matern Priors In Bayesian Inverse Problems, Richard David Brown

Graduate Student Theses, Dissertations, & Professional Papers

We present a new technique, based on semivariogram methodology, for obtaining point estimates for use in prior modeling for solving Bayesian inverse problems. This method requires a connection between Gaussian processes with covariance operators defined by the Matérn covariance function and Gaussian processes with precision (inverse-covariance) operators defined by the Green’s functions of a class of elliptic stochastic partial differential equations (SPDEs). We present a detailed mathematical description of this connection. We will show that there is an equivalence between these two Gaussian processes when the domain is infinite which breaks down when the domain is finite due to the …

College Athletes And Alcohol Use: The Need For Effective Prevention/Intervention Programs, Paige M. Craig

Graduate Student Theses, Dissertations, & Professional Papers

The literature review investigates the relationship between alcohol and college athletes. College athletes are a high-risk drinking group; alcohol use amongst collegiate athletes is a major concern due to the consequences associated with use. It is important to review student-athlete behavior and influences that contribute to alcohol use in order to design a program that effectively prevents use and intervenes use when it occurs. Results from original articles were used to support the need for effective prevention/intervention programs for this population based on the severity and frequency of use, negative effects of alcohol, and lack of effective prevention/intervention programs. Coaches, …

Characterizing Burn Severity Of Beetle-Killed Forest Stands Leveraging Google Earth Engine-Derived Normalized Burn Ratios, Sofronio Catalino Propios Iii

Graduate Student Theses, Dissertations, & Professional Papers

Following numerous studies, a general consensus on burn severity in forests affected by bark beetle outbreaks has not yet been achieved. The purpose of this study is to characterize burn severities in forest stands affected by mountain pine beetle (MPB) outbreaks, especially in relation to “time since outbreak”, vegetation cover, and topographic factors. This study focuses on wildfires that occurred in the northern Rocky Mountains of Idaho and Montana during the 2012 fire season within forested areas that had previously experienced prior MPB outbreaks. Remote sensing techniques were used to quantify and compare the burn severities of MPB-outbreak stands with …

Collaborative Conservation: A Philosophical Analysis Of The Efficacy And Commensurability Of Tek And Western Science, Anne M. Belldina

Graduate Student Theses, Dissertations, & Professional Papers

This thesis seeks to explore the similarities and differences between traditional ecological knowledge and Western science as a way to address long-held misconceptions about the efficacy of traditional ecological knowledge, or TEK. The motivation for this project arose from a deep desire to investigate the historical injustices toward Indigenous peoples in the name of conservation. The goal of this analysis is to illustrate that effective collaboration between Indigenous knowledge holders and Western scientists is not only possible, but desirable. I outline three major barriers from which I draw out three minimum criteria which much be met if collaborative conservation efforts …

Electrospun Fibers With Smart Delivery Of Therapeutic Agents, Zahra Mahdieh

Graduate Student Theses, Dissertations, & Professional Papers

Electrospinning is the most widely studied technique of producing fibers. Delivery of nanoparticles and therapeutic agents from electrospun fibers have potential uses in various fields including drug delivery, filtration, and cosmetics. However, controlling the delivery rate remains the main challenge. In the current study, core-shell structure fibers were developed with zinc oxide nanoparticles applied in the shell composition to improve the pore structure (release pathway) and mechanical stability. Fine-tuned delivery rates were achieved via loading different sizes of silver nanoparticles (Ag NP) inside the fiber core. In vitro drug release assays showed fast, slow, and intermediate delivery rates of 20 …

Modeling Hydrologic Impacts Of Tribal Water Rights Quantification And Settlement On The Flathead Indian Irrigation Project, Jordan Andrew Jimmie

Graduate Student Theses, Dissertations, & Professional Papers

The Confederated Salish and Kootenai Tribes (CSKT) of the Flathead Reservation are a federally-recognized group of tribes (Kootenai, Salish, and Pend d’Oreille) located in western Montana. On the reservation lies the expansive Flathead Indian Irrigation Project (FIIP), which supplies irrigation water to approximately 127,000 acres of tribal and non-tribal agricultural land. The 1904 Flathead Allotment Act opened “surplus” land to non-native homesteaders without tribal consent, initiating the land ownership fragmentation observed on the reservation today. This legacy, combined with historically unquantified tribal reserved water rights and the antiquated state of the FIIP infrastructure, including water losses from unlined earthen canals, …

Rhetoric And Perception: A Case Study Of The Proposed Northmet Mine On Minnesota’S Iron Range, Sophia J. Frank

Graduate Student Theses, Dissertations, & Professional Papers

Northern Minnesota is rich in natural resources, perhaps most uniquely the expansive mineral deposits of the Mesabi and Vermilion Ranges. The steel and taconite mining opportunities along these veins helped facilitate the rapid growth and infrastructure development of the area and is an important part of the identity of the region northwest of Duluth, aptly known as Iron Range. In addition to iron deposits, The Iron Range contains large deposits of copper and nickel. Recently proposed copper-nickel mining projects by PolyMet and Twin Metals have garnered a great deal of public controversy, especially around issues of economic revitalization of the …

Measuring Development Across The Rural Urban Continuum In The United States Northern Rocky Mountain Region, Morgan E. Anderson

Graduate Student Theses, Dissertations, & Professional Papers

In recent years, the U.S. Northern Rocky Mountain Region has undergone a broad shift in landscape resulting in previously working agricultural, forestry, or other natural resource-based lands transitioning into residential and commercial development. Sprawl, exurban development, loss of crop and forest land have been identified as development concerns in the region. The region is unique because it is generally comprised of smaller metropolitan and micropolitan centers and highly dispersed rural towns making haphazard development issues a concern across the rural‑urban continuum. To identify and describe shifts in development patterns from 2001 to 2016, structural landscape metrics were used to measure …

Wilderness Recreation Trends And Impacts: A Case Study Of The Sawtooth Wilderness, Chelsea E. Phillippe

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Somebody Told Me You Died, Barry E. Maxwell

Graduate Student Theses, Dissertations, & Professional Papers

Somebody Told Me You Died is a sampling of works exploring the author’s transition from “normal” life to homelessness, their adaptations to that world and its ways, and their eventual efforts to return from it. The collection dovetails into a final essay examining the struggle to comprehend and rise above a racist upbringing.

Epigenetic Alterations In Response To Multi-Walled Carbon Nanotubes And Dha Diet Modification, Elizabeth Michelle Cole

Graduate Student Theses, Dissertations, & Professional Papers

Multi-walled carbon nanotubes (MWCNTs) are a class of engineered nanomaterials that pose airborne exposure risks to human health. Immense variations in physical properties such as size and shape complicate understanding the underlying mechanisms and consequences of MWCNT exposures. There are concerns that exposures can lead to chronic pulmonary inflammation and fibrosis diseases, as is the case with other more known ultra-fine respirable materials with similar physical properties, such as crystalline silica and asbestos. Pro-inflammatory diseases can be regulated by epigenetic changes, which can be influenced by environment, including diet. Docosahexaenoic acid (DHA) is an omega-3 fatty acid that may promote …

Hand Signs, Rebecca Kristine Swanberg

Graduate Student Theses, Dissertations, & Professional Papers

Hand Signs is a novel-in-progress that follows a friendship between two high school women, set in the world of elite choirs. It is an investigation of giving up one’s individuality for the sake of a greater harmony, in both the context of choral arts and young female friendships.

Leadership In Higher Education And The Impact On Faculty Satisfaction And Retention, Theresa A. Petersen

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Change Is The Only Constant: A Snowpack Retention Analysis And Climate Vulnerability Road Map For The Skalkaho Creek Sub-Basin, Zachary Freeman Goodwin

Graduate Student Theses, Dissertations, & Professional Papers

Climate change is impacting the whole of North America, although the impacts differ depending on regional geography. In the Intermountain West, climate change is contributing to lower overall snowpack totals and diminished late season streamflows. These changes will likely contribute to vulnerabilities in how much water is available to irrigators, municipalities, and fisheries dependent upon a consistent yearly flow of meltwater. This paper explores how snowpack retention has changed via the NASA dataset Daymet, which provides gridded estimates of weather parameters including Snow Water Equivalent in the Bitterroot River Basin of western Montana. This analysis showed that snowpack retention from …

Investigation Of Docosahexaenoic Acid As A Potential Treatment For Particulate-Induced Inflammation, Paige Lynn Fletcher

Graduate Student Theses, Dissertations, & Professional Papers

Acute and chronic inflammation are vital contributing factors to pulmonary diseases which can be triggered by the exposure to airborne toxicants such as crystalline silica (SiO2) and nanomaterials. There has been an increasing trend in the use of nanomaterials; specifically multi-walled carbon nanotubes (MWCNT), in various consumer products that in turn will increase the risk of pulmonary diseases. Unfortunately, there is a lack of preventative and therapeutic treatments for these diseases. A potential treatment that has been shown to have anti-inflammatory effects is the common dietary supplement docosahexaenoic acid (DHA); an omega-3 polyunsaturated fatty acid most commonly found in fish …

Leadership In Higher Education And The Impact On Faculty Satisfaction And Retention, Theresa Petersen, Frances O'Reilly

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

The Nmda Receptor Coagonists L-Glutamate And D-Serine, Denis Mikhailovich Shchepakin

Graduate Student Theses, Dissertations, & Professional Papers

Glutamate is the predominant excitatory neurotransmitter in the mammalian central nervous system. Glutamate release and reuptake control both tonic activation of glutamate receptors and phasic signaling during synaptic transmission. Here we study different aspects of the system. The first three chapters focus on the most abundant glutamate transporters found in the brain, excitatory amino acid transporters 1-3 (EAAT1- 3/SLC1A3,2,1). The last chapter is devoted to a paralogous neutral amino acid transporter (ASCT1/SLC1A4) and its role in transport of D-serine, a coagonist of the N-methyl-Daspartate (NMDA) glutamate receptor.

In the first chapter, we discuss the existing discrepancy in estimates of EAAT1-3 …

Impacts Of Environmental Variables On Deer Mouse Survival In The Southwestern United States, Emily C. Weidner

Graduate Student Theses, Dissertations, & Professional Papers

North American deer mice (Peromyscus maniculatus) are the primary reservoir for Sin Nombre orthohantavirus, and they play a significant role in the maintenance and transmission of disease across the landscape. Vital rates, such as survival, are a key component to understanding how disease spreads in a population. Understanding environmental factors that influence survival may allow for development of a predictive model that can assess disease risk in deer mice and, thus, a corresponding increased disease risk for humans. Our work explored the relationship between deer mouse survival and environmental variables at three long-term small mammal trapping sites in …

Sediment Dynamics In The Magdalena River Basin, Colombia: Implications For Understanding Tropical River Processes And Hydropower Development, Luke H. Fisher

Graduate Student Theses, Dissertations, & Professional Papers

The Magdalena River Basin of Colombia has a globally relevant sediment flux, however, studies of the sediment regime in the basin are limited in scope. This knowledge gap limits application of understanding of sediment dynamics to hydropower decision making. To close this gap, we implemented a sediment budget framework to quantify the impacts of hydropower development in a 118,000 km² portion of the Magdalena River basin. We informed this framework with analysis of background erosion rates derived from ¹⁰Be cosmogenic nuclides and modern sediment fluxes derived from monitoring and optical remote sensing. We standardized these data to spatially …

Using Satellite Observations Of Soil Moisture To Improve Modeling Of Terrestrial Water Cycles, Colin W. Brust

Graduate Student Theses, Dissertations, & Professional Papers

Terrestrial evapotranspiration (ET) describes the flux of water from the Earth’s surface to the atmosphere, calculated as the sum of evaporation from soil and leaf surfaces, and transpiration through plant stomata. ET is the largest terrestrial water flux, returning over half of the precipitation that falls on land back to the atmosphere, annually. Additionally, ET plays a key role in Earth’s carbon, water, and energy cycles, linking them together via the movement of water and CO₂ through plant stomata. Because of its important role in these Earth system processes, it is essential that existing methods of measuring and modeling …

A Deep Learning Approach To Mapping Irrigation: U-Net Irrmapper, Thomas Henry Colligan Iv

Graduate Student Theses, Dissertations, & Professional Papers

Accurate maps of irrigation are essential for understanding and managing water resources in light of a warming climate. We present a new method for mapping irrigation and apply it to the state of Montana over the years 2000-2019. The method is based on an ensemble of convolutional neural networks that only rely on raw Landsat surface reflectance data. The ensemble of networks method learns to mask clouds and ignore Landsat 7 scan-line failures without supervision, reducing the need for preprocessing data or feature engineering. Unlike other approaches to mapping irrigation, the method doesn't use other mapping products like the Cropland …

Decoupled Diel Solutes: Linking Primary Production And Nitrate Uptake In A Montane Stream, Kimberly Bray

Graduate Student Theses, Dissertations, & Professional Papers

Tight coupling of surface water diel dissolved oxygen (DO) and nitrate-N (NO₃-N) signals reflects stoichiometric demand of carbon and nitrogen in stream ecosystems. However, DO and NO₃-N can become decoupled due to alternative drivers of diel solutes, resulting in conflicting estimates of stoichiometric and modeled NO₃-N uptake. In this study, I measured benthic biomass, hydrology, and dissolved solutes in a montane stream located in western MT over a growing season (June-October 2019). Daily stream metabolism and NO₃-N uptake were modeled using a single-station open-channel approach. Timing and amplitude of key diel signals …

The Built Environment At Plaza H, Cahal Pech: A Study In Resiliency, Rachel A. Steffen

Graduate Student Theses, Dissertations, & Professional Papers

This thesis seeks to understand the human response to extreme environmental, social, and political change during the Terminal Classic (750-1050 CE) at Cahal Pech. Across the Maya lowlands, this period is distinguished by the end of divine kingships, the cessation of new monumental architecture, rapid changes in prestige goods and trade networks, and population decline at many major centers. Cahal Pech, a medium-sized ceremonial center, experienced great shifts in political power and access to resources during the Terminal Classic. This thesis attempts to understand the last occupation of the site, prior to abandonment. Field data for this study is derived …

Worth A Dam: Glacier View And The Preservation Of Wild America, Shawn Patrick Bailey

Graduate Student Theses, Dissertations, & Professional Papers

Conceived in the mid-1930s and formally proposed in 1943, the Glacier View Dam was an Army Corps of Engineers’ proposal for the North Fork of the Flathead River in northwestern Montana. This 416-foot tall dam would have provided inexpensive hydroelectric power to the region and helped control flooding on the volatile Columbia River watershed. Glacier View would also have flooded 20,000 acres of Glacier National Park, one of the “crown jewels” of the national park system. An ideologically diverse coalition of National Park Service officials, wilderness activists and outdoor recreation enthusiasts organized the defense of Glacier National Park and convinced …

Heat For The Masses: Thermal Ecology Of The Western Tent Caterpillar, Victoria Dahlhoff

Graduate Student Theses, Dissertations, & Professional Papers

A unique feature of some gregarious, colonial insects is their ability to create external structures that alter environmental conditions for the entire (often family) group. A combination of physical alteration of local microhabitats and behavioral thermoregulation allows many of these animals to actively control their body temperatures, which allows them to regulate energy use and metabolism in variable thermal environments. Here I describe mechanisms of microhabitat modification and thermal regulation in the western tent caterpillar, Malacosoma californicum pluviale. Tent caterpillars build communal silk tents, whose temperatures can rise substantially above ambient air temperature. I experimentally manipulated colony sizes and examined …

A Conservation Marketing Toolkit: Systematic Literature Mapping, Microtargeting Conservation Easements, And Conservation Corridor Prioritization, Hannah Josie Leonard

Graduate Student Theses, Dissertations, & Professional Papers

In a changing world with limited resources for conservation efforts, conservationists, wildlife managers, and land managers must look for creative ways to realize conservation goals. A new wave of conservationists is investigating how other disciplines, namely psychology and marketing, might improve our ability to understand and change conservation-related human behavior. In this thesis, I review existing applications of “conservation marketing” and apply a subset to advance two specific conservation challenges. In Chapter 1, I present a systematic mapping of the conservation marketing literature to understand the lay of the land in how conservationists have already applied marketing techniques to conservation, …