Digital Commons Network^™

Confronting The Challenges Of Whale Avoidance By Large Vessels To Reduce Collision Risk: A Quantitative Approach, Jennifer E. Helm

Graduate Student Theses, Dissertations, & Professional Papers

Disturbance of wildlife by human transportation infrastructure is ubiquitous. This type of human-wildlife conflict has the potential to negatively impact wildlife population growth rates, especially for at-risk species like large whales. While many whale populations are rebounding as a result of a moratorium on commercial whaling, increasing ship traffic constitutes a significant threat to whale conservation efforts in the form of ship-whale collisions (“ship strikes”). Ship strike avoidance is difficult because vessel operators can only see whales when they are breaking the surface of the water, or “available for detection,” and even then, they will only see them a fraction …

Cut And Run, Hamish Rickett

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Matrix Of Community, Shelby A. Hanson

Graduate Student Theses, Dissertations, & Professional Papers

ma·trix noun

Origin: Latin

Matter - Matrix - Matrix

Matr- Breeding Female Womb

1. An environment or material in which something develops,

a surrounding medium or structure.

2. A mold in which something is cast or shaped.

3. A rectangular array of quantities or expressions in rows and

columns that is treated as a single entity and manipulated according to particular

rules.

The Effect Of Academic Advisor Type On Undergraduate Student Retention, Brian Patrick French

Graduate Student Theses, Dissertations, & Professional Papers

This study was designed to examine the effect of academic advisor type on retention of first-year, full-time, four-year degree-seeking students at a mid-size research university in the western U.S., while controlling for several predictor variables identified in contemporary and seminal literature as having a potential impact on student retention. Predictor variables are: socioeconomic status, first generation in family to attend college, high school grade point average, first semester grade point average, and enrollment in developmental coursework.

In the study, a binary logistic regression model was employed to determine whether academic advisor type had a statistically significant effect on the probability …

Transitioning Montana To A Renewable Energy Future: The Social And Economic Impacts, Jacqueline O. Sussman

Graduate Student Theses, Dissertations, & Professional Papers

Montana is home to the second-largest coal-fired power plant in the West, the Colstrip Generating Station. The value and demand for coal both domestically and globally is quickly diminishing, while the renewable energy industries of wind and solar are booming. As utilities in the Northwest transition their investments from coal to renewable energy, Montana faces a critical decision on the future of its energy system that will impact the lives of generations of Montanans to come.

This five-part report aims to aid in the discussion and decision-making process by reviewing the most up-to-date economic data on renewable energy; discussing the …

Breaking Chains Of Oppression: Popular Culture And The Plundering Of Blackness, Corina Sacajawea Ambrose

Graduate Student Theses, Dissertations, & Professional Papers

This thesis focuses on the ways in which white supremacy created mass incarceration, specifically mass incarceration of black individuals, and how this continues to perpetuate a racial caste system in the United States. First, I examine contemporary novelist Colson Whitehead‘s The Underground Railroad to provide a historical background of white supremacy and slavery. Then, I argue that pop culture is one area in which artists are focused on the abolition of the prison-industrial complex and ending mass incarceration. Finally, I focus on JAY-Z‘s music video “The Story of O.J.“ and Beyoncé‘s visual album Lemonade and her 2018 Coachella performance to …

A Comparison Of Three Agricultural Startups, John Dindia

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Watered Down: The Challenges Of Managing Water Resources In Montana, Beau E. Baker

Graduate Student Theses, Dissertations, & Professional Papers

Like much of the American West, Montana sits in the cross hairs of climate change. State drought resiliency projects and cooperative watershed management are on the rise in the face of decreased snowpack, early runoff, precipitation variability and lower seasonal stream flows. Population growth, land use practices, recreation and tourism all contribute to pressures on state water supplies.

Montana is faced with the arrival of invasive species that threaten the ecological health of its lakes, rivers and streams. State budget constraints and depressed agency capacity are hurting our ability to fend off these threats. There’s a lack of public education …

A Cartographic Workflow Manual For Endangered Species Conservation, Martin P. Viereckl

Graduate Student Theses, Dissertations, & Professional Papers

In response to global consumer demand for rare and exotic wildlife products, poaching of endangered species has become pervasive around the world (Eliason 1999). Despite the enactment of CITES, and other international efforts to protect vulnerable species from overexploitation, the global market for illegal wildlife products is estimated as high as $20-billion a year industry (Wyler 2008). Within important wildlife habitat sites, law enforcement struggle to curb rampant poaching that threatens the ultimate survival of many endangered species (Jachmann 2008; Rowcliffe 2004). Law-enforcement agencies responsible for protecting wildlife from poachers often lack geospatial tools that could greatly improve the effectiveness …

Annual Climate Impacts On Tree Growth And Post-Fire Regeneration In Ponderosa Pine And Douglas-Fir In The Northern Rocky Mountains, Lacey Hankin

Graduate Student Theses, Dissertations, & Professional Papers

Widespread changes in climate and disturbance regimes, including prolonged drought and increases in the size and frequency of wildfires, have raised concerns regarding forest resilience to environmental change. Dry mixed-conifer forests have persisted for centuries under mixed-severity fire regimes; however, climatically driven increases in the frequency of large wildfires in recent decades may lead to increased tree mortality and declines in post-fire tree regeneration. Climatic warming and increased drought may also impact tree growth, with implications for the carbon cycle. Lower-treeline forests near the edge of their climatic tolerance may be particularly vulnerable to these impacts of future climate warming …

Tribal Consultation: A Critical Reminder Of Cultural Resource Management Laws And Obligations, Natasha F. Larose

Graduate Student Theses, Dissertations, & Professional Papers

By categorizing the National Historic Preservation Act and National Environmental Policy Act as red tape hindering infrastructure, the current Presidential administration is attempting to streamline processes to approve federal undertakings. In doing so, it threatens the government-to-government relationship between federal agencies and tribal governments. This relationship is a work-in-progress that needs to be nurtured rather than reverting to assertion of plenary powers over tribal affairs. The purpose of this research is to remind federal agencies that there are legal obligations to include tribal entities in the decision-making processes for federal undertakings. Furthermore, this research can serve as a reference for …

Into The Wilds: Influences From Video Games On Our Perception Of 'Nature', Toryn W P Rogers

Graduate Student Theses, Dissertations, & Professional Papers

In this paper I examine how representations of human-sparse natural environments, e.g. wilderness, influence what expectations we have when we actually engage with comparable physical places. I use Don Ihde's phenomenology of technology to describe my own experiences playing three games that take place among large photorealistic human-sparse natural environments: Elder Scrolls V: Skyrim, Horizon Zero Dawn, and theHunter: Call of the Wild. I also conduct a brief literature review on the effects of video games as interactive media on players. I argue that players are capable of applying their expectations of what constitutes realism from digital to physical environments, …

Managing Mining Pollution: The Case Of Water Quality Governance In The Transboundary Kootenai/Y, Ashley Juric

Graduate Student Theses, Dissertations, & Professional Papers

This thesis addresses current water quality management challenges in the transboundary Kootenai/y River Basin, and how these challenges are shaped by historical, economic, political, and social factors. The water quality of this basin, both in the United State and Canada, has been severely affected by coal mining that has occurred in British Columbia over the last hundred years and continues to be threatened by several proposed mining expansion projects. The goals of this research are to uncover the forces shaping water management and to determine the potential for interested and affected parties to participate in crafting water quality protection measures. …

Meat Reimagined: The Ethics Of Cultured Meat, Valan Anthos

Graduate Student Theses, Dissertations, & Professional Papers

In this paper I explore a relatively new technology that is being developed to try and solve some of the major issues with modern animal agriculture called cultured meat. I cover the short history of this technology and where it is at currently before addressing two different ways of evaluating the ethics of cultured meat. Responding to much of the praise for cultured meat based on consequentialist ethics, I lay out reasons for skepticism and how some of these estimates might be overblown due to those people advocating for it being situated in the ideology of ecomodernism. I argue that …

Avian Community Responses To Bison Grazing In North American Intermountain Grasslands, Danielle A. Fagre

Graduate Student Theses, Dissertations, & Professional Papers

Grassland and shrubland songbird species are a guild of conservation concern in North America. Many of these species have experienced severe population declines, due to habitat loss and land use change. This makes the conservation and management of remaining habitat of crucial importance for this guild. Grazing by large herbivores is an ecosystem process in grassland systems, and in North America, one of the major historic grazers was the Plains bison (Bison bison). Bison are considered ecosystem engineers, because they modify habitat to be more or less suitable for other species, such as grassland and shrubland songbirds. Bison …

Mediating Cultural Border Crossings Between American Indian Tribal College Students And Natural Resources Science Learning Using Culturally Congruent Education, Shandin Hashkeh Pete

Graduate Student Theses, Dissertations, & Professional Papers

This study is motivated by two research questions: (1) How does Culturally Congruent Instruction (CCI) influence American Indian (AI) students' attitudes and achievement in natural resources science at a tribally controlled college/university (TCU)? And (2) What is the nature of the relationship between CCI course modifications and changes (or lack of) in AI students' science attitudes and achievement at a TCU? Findings developed a Culturally Congruent Instructional Framework (CCIF) for use in TCUs and beyond.

Previous research suggest that AI students and tribal college science must find congruence for the student to cross cultural boundaries of the institution. TCUs can …

Using Astrobiology As A Platform To Study The Impact On The Mathematical Content Knowledge And Pedagogical Content Knowledge Of Elementary Education Majors, Meredith Kay Berthelson

Graduate Student Theses, Dissertations, & Professional Papers

Early mathematical skills have long been hailed as a cornerstone and as the best predictor of later success in mathematics and literacy. This perception highlights the importance of elementary educator’s mathematical content knowledge (MCK) and pedagogical content knowledge (PCK). This study explored a novel approach to motivating and facilitating preservice elementary educators’ engagement in an interdisciplinary context. Astrobiology is a growing interdisciplinary field with extraordinary educational potential. It has the potential to provide an exciting science framework structure to mathematics for preservice educators. Due to its interdisciplinary content, astrobiology offers preservice educators an opportunity to see math content through a …

Intelligent Personal Assistants In The Classroom: Impact On Student Engagement, Jason Patrick Neiffer

Graduate Student Theses, Dissertations, & Professional Papers

Intelligent personal assists are as a software tool utilized by millions of consumers to interact with their smartphone, tablet, laptop or desktop computer, or smart speaker. As more mobile and computer operating systems offer the feature, more classrooms and ultimately students will have access to one of these tools, either on a school-purchased device or a personal device.

The aim of this study was to look at a specific implementation of Siri, an intelligent personal assistant platform, in upper elementary and middle school science classrooms. The researcher utilized the lense of student engagement to measure the impact of the implementation …

Universal Design For Learning In Online Credit Recovery: Do Course Features Impact Achievement?, Robert I. Squires

Graduate Student Theses, Dissertations, & Professional Papers

This experimental study investigated whether the addition of course features based on the Universal Design for Learning (UDL) framework impacted achievement in an online English 1A credit recovery course offered by a state virtual school in the Western United States. An alternative format for completing course mastery assignments and eText support tools (ReadSpeaker and TextAid) were added to an existing version of the course. Writing prompts were also included in the alternative mastery assignments. Credit recovery students were randomly enrolled by school personnel into control and treatment sections of the English 1A courses using the enrollment mechanism of the school’s …

Determination Of Lipid Bilayer Affinities For Small Molecules Using Capillary Electrophoresis And Copolymer – Stabilized Lipid Bilayer Nanodiscs, William Michael Penny

Graduate Student Theses, Dissertations, & Professional Papers

Electrokinetic chromatography is a variation of capillary electrophoresis that allows for the separation of nonionic analytes by selective interaction with an ionic pseudostationary phase dissolved in the background electrolyte. The utility of electrokinetic chromatography to characterize pseudostationary phases and pseudostationary phase–solute interactions has been recognized since its introduction. The objective of this dissertation was to use electrokinetic chromatography and copolymer stabilized lipid bilayer nanodiscs as a pseudostationary phase to characterize small molecule-lipid bilayer interactions.

Styrene-maleic acid copolymers were used to stabilize cylindrical sections of lipid bilayer in solution, forming nanodiscs. The nanodiscs are formed based on strong hydrophobic interactions between …

Greening Of The Arctic: Plot-Scale Analysis Of Interactions Between Climate, Vegetation, And Permafrost At Toolik Lake, Alaska (1995 - 2017), Brianna Rick

Graduate Student Theses, Dissertations, & Professional Papers

Air temperatures across the Arctic have increased in recent decades, and through complex feedbacks, vegetation and permafrost (frozen ground) are actively responding as climate warming continues. This study investigates the trends and interactions of observed air, soil-surface temperature (SST), and active-layer thickness (ALT) at Toolik Lake on the Alaskan North Slope between 1995 and 2017, as well as vegetation change over time.

Time series between 1995 and 2017 at CALM site U12B, a 1 ha plot near Toolik Lake, reveal an increase (0.50 °C/decade) in mean summer (Jun-Aug) air temperatures and a decrease (­0.23 °C/decade) in mean summer SST. In …

Directional Non-Covalent Interactions: Exploring The Nuances Of Halogen Bonds And Hydrogen Bonds In Solution And The Solid-State, Nicholas Blouin Wageling

Graduate Student Theses, Dissertations, & Professional Papers

Molecules interact in numerous ways. Halogen bonding is one of the most newly discovered and poorly understood non-covalent interactions. However, this attractive force may be a useful tool for chemists in various disciplines. The directional nature, and competitive strength of the interaction makes it a promising alternative to hydrogen bonding based molecules. Indeed, through crystal structures and solution phase anion titrations, this work has shown that a halogen bonding scaffold can outperform its hydrogen bonding analogue not only in overall interaction strength, but also in resistance to inactivation from polar solvents (an important feature in anion receptors, organocatalysts, and many …

The Development Of A Simplified Alkalinity Titration Analyzer, Reba Van Beusekom

Graduate Student Theses, Dissertations, & Professional Papers

Alkalinity is the acid neutralizing capacity for water, meaning alkalinity measures how sensitive an aquatic system is to acidic inputs. Currently, there are various measuring systems for alkalinity available including chemical test kits, potentiometric techniques, and colorimetric methods. Commercially available products lack the ease of use combined with precision and accuracy desired for on-line process and environmental monitoring. The goal of this project is to develop a simplified alkalinity titration analyzer, called the easyTMT, to measure alkalinity with precision and accuracy comparable to the best conventional methods. The system, under development, uses the Tracer Monitored Titration (TMT) technique. TMT …

Quantum Mechanics Investigation Of The Photophysical Properties Of Ruthenium(Ii)-Based Complexes Combined With The Development Of Their Force Field Parameters Using Molecular Mechanics And Molecular Dynamics Simulation, Sanaa Saad Alabbad

Graduate Student Theses, Dissertations, & Professional Papers

The focus of this study is to develop a theoretical strategy that can help guide the design of novel organometallics with desirable photophysical properties for molecular engineering. This computational study includes proposed complexes and others for which experimental data are available. The agreement between the computational results and the experimental observations confirms the validity of our procedure and the level of theory we applied in this study. The ground singlet (S0) and excited triplet (T1) electronic states and corresponding optical spectra of a series of cationic complexes —[RuH(CO)L(PPh3)2]+ (L=2,2´-bipyridyl) (Rubpy), 4,4´-dicarboxylic-2,2´-bipyridyl (Rudcbpy), bis-4,4’-(N-methylamide)-2,2´-bipyridyl (Rudamidebpy), bis-4,4’-(methyl)-2,2´-bipyridyl (RudMebpy), [Ru(CO)2dcbpy(PPh3)2]2+ (Ru(2CO)dcbpy), [Ru(H)2dcbpy(PPh3)2] (Ru(2H)dcbpy), …

Transfer Of Graphing Skills From Math To Chemistry, Brittany Danielle Busby

Graduate Student Theses, Dissertations, & Professional Papers

Most students begin their university studies with adequate mathematical skills to succeed in general chemistry. However, students have a demonstrated difficulty with the application of math in a chemistry context. The ability to apply skills to new contexts is known as transfer, and understanding and enhancing transfer of graphing skills into the context of chemistry is the primary purpose of this investigation. Graphing skills were selected as the area of emphasis because they provide a strong conceptual link between math and chemistry.

This is a two-phase, sequential, quasi-experimental, mixed-methods study. In the first phase of the study, the quantitative research …

Curated Chaos: A Rhetorical Study Of Axmen, Rebekah A. Mcdonald

Graduate Student Theses, Dissertations, & Professional Papers

In this study, the author uses mixed methods to analyze a three-dimensional place as a rhetorical artifact. The artifact, Axmen, is a family owned, for-profit retail store and a non-profit museum outside of Missoula, Montana. Using examples of the tangible and semiotic features found within the place, the author demonstrates and translates the rhetorical messages communicated there. These messages are then contrasted with the messages the owners and curators of Axmen want to communicate. The author argues that the current curation of museum artifacts and retail products is exclusive to white males, romanticizing blue collar work. This single-lens narrative of …

Quantifying Effects Of Using Thermally Thin Fuel Approximations On Modelling Fire Propagation In Woody Fuels, David Blasen, Jesse Johnson, William Jolly, Russell Parsons

Graduate Student Theses, Dissertations, & Professional Papers

In this paper, we quantify the effects of the thermally thin fuel approximations commonly made in numerical models that eliminate temperature gradients within a heated object. This assumption is known to affect the modeled ignition and burn behavior, but there is little research on its impact, particularly in larger fuels or in numerical models including moisture and chemical decomposition of fuels.

We begin by comparing modeled to observed ignition times and burn rates. To constrain variability in the material properties of wood and focus on variability caused by fuels assumed to be thermally thin, we conduct experiments using thermogravimetric analysis …

Of Ruptures And Raptures: Locating Ideology With Lidar Imagery, William Dale Schroeder

Graduate Student Theses, Dissertations, & Professional Papers

Archaeological praxis necessarily requires at least one object (a piece of technology or something that functions as an object) to articulate and explain ideologies from the past. This is problematic because ideology is abstract and difficult to locate in the archaeological record in reified form. Archaeology’s preoccupation for over 100 years has been the systematic location, identification, and excavation of discrete artifacts; features, and sites; interpreting meanings from comparative studies and data sets; and putting the past in order all while documenting change over time. Historical archaeologist Mark P. Leone identified fences, the Plat of the ideal City of Zion, …

Just Open A Window: Understanding The Vulnerability To Summer Heat Of A Mountain Community In The Western United States, Missoula, Mt, Julie J. Tompkins

Graduate Student Theses, Dissertations, & Professional Papers

How do we conceptualize vulnerability or resiliency to a natural hazard when it has not historically been understood as such? This study focuses on Missoula, located in mountains of western Montana, which has steadily grown by 1-2% per year to almost 75,000 residents. The formerly temperate quality of its winters and summers has also been changing. Projections from the 2017 Montana Climate Assessment estimate the state will experience a 2-5°F increase in mean annual air temperature over the next two decades, prompting city and county officials to plan for scenarios not formerly in their consideration. Of further concern is the …

Leaving More Than Footprints: Impacts Of Tourism And Perceptions Of Change In Chilean Patagonia, Heidi Blair

Graduate Student Theses, Dissertations, & Professional Papers

Visitation to protected areas is on the rise globally, and the Aysén region of Chilean Patagonia is part of that trend. Within Aysén, Cerro Castillo National Reserve is one of the protected areas that has seen the largest increase in visitation in recent years. Protected area tourism catalyzes changes in surrounding communities, and it is important to understand resident perceptions of these changes in order to inform management planning and to implement effective, equitable conservation policy. In this study, I use qualitative research methods to investigate local residents’ perceptions of social, economic, and ecological changes spurred by or related to …