Digital Commons Network^™

Nonlinear Partial Differential Equations, Their Solutions, And Properties, Prasanna Bandara

Boise State University Theses and Dissertations

Although valuable understanding of real-world phenomena can be gained experimentally, it is often the case that experimental investigations can be found to be limited by financial, ethical or other constraints making such an approach impractical or, in some cases, even impossible. To nevertheless understand and make predictions of the natural world around us, countless processes encountered in the physical and biological sciences, engineering, economics and medicine can be efficiently described by means of mathematical models written in terms of ordinary or/and partial differential equations or their systems. Fundamental questions that arise in the modeling process need care that relies on …

Men And The Socially Created Stigma Of Anorexia, Marcus Ogawa

Boise State University Theses and Dissertations

This study illuminates how college men negotiate and communicate their body image in a culture that is placing greater emphasis on the importance of body image for men. Embracing the theory of Social Construction, this study offers a communicative perspective to explore men’s articulation of body image and how they make sense of anorexia. Existing research reveals anorexia as a problem primarily associated with women, and consequently men demonstrating anorexic behaviors often find it difficult to receive help. Literature also affirms that our culture often expects men to be ashamed of behaving in any way that does not conform to …

Internal Workings, Earle D. Swope

Boise State University Theses and Dissertations

Converging my various identities as artist, educator, firefighter and city employee I delved into the City of Boise’s LIV campaign. LIV’s intent is the reimagining of municipal government and its engagement with employees, residents, and business. I pursued three different projects: interning in Human Resources, sitting on the Vista revitalization committee, and coordinating art students with the Boise Farmers Market “Mobile Market” project. I found myself in a very Boise story. This project has several more years until it reaches a maturation point where the final outcomes are known.

My response is the visual documentation of the relationships formed and …

Electrolyte Optimization Study For Tio2 Nanotube Electrode In Sodium Ion Batteries, Richard Wendel Cutler

Boise State University Theses and Dissertations

Batteries are ubiquitous in daily life. Sodium-ion batteries have the potential to become inexpensive alternatives to the current market products such as Lithium-ion batteries. TiO₂ nanotubes have proven potential as an anode for Na-ion batteries. Electrolytes made by NaClO₄ salt and carbonate-based solvents make up commonly used electrolytes in sodium ion battery research. We used electrochemical and physical characterization tests to evaluate the optimum electrolyte for this anode material in the Na system. We determined that the ClO₄^- ion decomposes at the TiO₂ surface and promotes the formation of an unstable solid electrolyte interphase. A …

Viticulture Performance And Cold Hardiness Attributes Of Select Winegrape Cultivars In The Western Snake River Plain Of Idaho, Jacob Joseph Cragin

Boise State University Theses and Dissertations

This two part study was carried out in the Snake River Valley American viticulture area (SRV AVA) in Idaho. This area is a northern latitude, high elevation plateau where growing season is delimited by cold temperature. For the first part of the study, the performance of red and white-skinned winegrape cultivars (Vitis vinifera, L.) were compared to that of the widely grown cultivars Merlot and Cabernet Sauvignon. Phenology, juice composition, yield, cold injury, and cold hardiness were observed during the 2011 and 2012 growing seasons. Phenological events occurred later in the cooler 2011 season than the warmer 2012 …

Plant Toxins Influence Diet Selection And Intestinal Parasites In A Specialist Herbivore, Marcella Rene Fremgen

Boise State University Theses and Dissertations

Herbivores select plants and patches that generally maximize nutrient intake and minimize intake of plant secondary metabolites (PSMs). Protein is important for growth, reproduction and maintenance, but maximizing intake of protein is often limited by concentrations of PSMs that are potentially toxic to herbivores and energetically expensive to process. However, the consequences of ingesting PSM are often dose-dependent. At high doses, PSMs generally have negative physiological effects and are avoided, but some PSMs can be therapeutic against parasites at low doses and could therefore be selected. We used Greater Sage-grouse (Centrocercus urophasianus, hereafter, sage-grouse) to test how PSMs influence …

“Right From Hades”: Water And Politics In Boise, Idaho, Molly Lorraine May

Boise State University Theses and Dissertations

The western United States has, arguably, been shaped by water—both through its presence and its absence. This thesis examines the history of the artesian and geothermal water resources of Boise, Idaho. The development of these resources has taken a trajectory that is defined by busy periods of expansion punctuated by long stretches of inactivity or stasis. These stages of development closely align with major trends in environmental history. Beyond merely providing additional insight to the history of the region, the commoditization of nature in Boise provides further elucidation of national trends of conservation, environmentalism, and green energy. By examining the …

Plastic Deformation And Effective Strain Hardening Coefficient Of Irradiated Fe-9wt%Cr Ods Alloy By Nano-Indentation And Tem, Corey Kenneth Dolph

Boise State University Theses and Dissertations

The objective of this study is to characterize changes in the yielding, and effective strain hardening coefficient of an oxide dispersion strengthened (ODS) alloy upon exposure to irradiation. It is well known that irradiation produces a supersaturation of defects, which alters the mechanical properties of a material. In order to engineer materials for use in advanced nuclear reactors, the long-term effects of neutron irradiation on mechanical performance must be understood. However, high-dose neutron exposure is often simulated using ion bombardment. Unfortunately, ion irradiation results in a shallow damage layer that prevents traditional bulk mechanical characterization methods from being utilized. A …

Mobility And Economy Of The Evenkis In Eastern Siberia, Karl Mertens

Boise State University Theses and Dissertations

Mobility is an aspect of human activity that is highly contextual but also in need of a framework for comparative analysis through time and space. This thesis examines Evenki mobility patterns and how these patterns relate to the economic practices of hunting, fishing, and reindeer herding, and utilizes a framework for considering mobility cross-culturally. The Evenkis are an indigenous minority living throughout central and eastern Siberia in the Russian Federation. In the fall and winter of 2011/2012, fieldwork among two groups of Evenkis documented patterns of resource use, foraging, and mobility. One group lives in a village and disperses to …

A Small Acoustic Goniometer For General Purpose Research, Michael Pook

Boise State University Theses and Dissertations

Understanding acoustic events and monitoring their occurrence is a useful aspect of many research projects. In particular, acoustic goniometry allows researchers to determine the source of an event based solely on the sound it produces. The vast majority of the acoustic goniometry research projects used custom hardware targeted to the specific application under test. Unfortunately, due to the wide range of sensing applications, a flexible general purpose hardware/firmware system does not exist for this research. This dissertation focuses on the development of such a system which encourages the continued exploration of general purpose hardware/firmware and lowers barriers to research in …

Effects Of Bone Morphogenetic Protein-2 And Parathyroid Hormone-Related Peptide On Collagen Xi During Skeletal Development, Neda Shefa

Boise State University Theses and Dissertations

Long bones develop via endochondral ossification, a process in which cartilage precedes bone. During endochondral ossification prechondrogenic cells undergo proliferation and apoptose as cells of the periosteum differentiate into bone. The process of endochondral ossification is regulated by a group of endocrine as well as paracrine molecules that includes bone morphogenetic protein-2 (BMP-2) and parathyroid hormone-related peptide (PTHrP). Collagens are extracellular matrix molecules that are present in a spatiotemporal manner during endochondral ossification. Collagen XI alpha 1 (Col11a1) is a minor fibrillar collagen that is alternatively spliced during development and can result in up to eight different spliceforms. During endochondral …

Dual-Input Dc-To-Dc Converter Topologies And Control Schemes, Shaun Alan Stickel

Boise State University Theses and Dissertations

Dual-input DC-to-DC converters are power supplies that draw power from two sources simultaneously and deliver power to a single load, the ratio of power drawn from each source and be held constant with changes in the load. Applications for dual-input power supplies are computer systems, mobile systems using energy harvesting, and systems needing redundant power supplies. This writing covers the operation and control of dual-input DC-to-DC converters that implement a non-inverting buck-boost function and utilize only a single power path.

Traditionally, a dual-input power supply is created by placing two standard power paths in parallel. This adds considerable control complexity …

Early School Leavers In Belize: Perspectives On School Experiences, The Purpose Of School And Why They Left, Bevin Etheridge

Boise State University Theses and Dissertations

The research herein focuses on how early school leavers described why they left school, their school experiences, and their beliefs about school’s purpose in their lives. This interpretive, multiple case study is based on 21 semi-structured interviews with early school leavers, a Likert-scale survey generated from the themes that emerged in the interviews, as well as national and school policy documents, evaluative reports on education and social issues, and various media pertaining to youth and education (Stake, 2005a). In order to understand the perspectives of participants, I tie them into the larger sociocultural, historical and economic context.

Although secondary education …

An Open-Source, Automated Chemical Vapor Deposition System For The Production Of 2d Materials, Dale Brown

Boise State University Theses and Dissertations

While interest in two-dimensional materials has exploded in recent years, the high cost of chemical vapor deposition (CVD) systems can act as a barrier to entry for some researchers interested in studying these materials. This thesis presents an open-source design for an automated CVD that can be built for a fraction of the cost of similarly capable commercial systems and that can easily be customized and expanded.With a CVD built as described,growth of high quality graphene and graphene foam is demonstrated.These results highlight the flexibility of the open-source design in producing a variety of nanomaterials, which are at the forefront …

The Classical Theory Of Rearrangements, Monica Josue Agana

Boise State University Theses and Dissertations

One type of conditionally convergent series that has long been considered by mathematicians is the Alternating Harmonic Series and its sum under various types of rearrangements. The purpose of this thesis is to introduce results from the classical theory of rearrangements dating back to the 19th and early 20th century. We will look at results by mathematicians such as Ohm, Riemann, Schlömilch, Pringsheim, and Sierpiński. In addition, we show examples of each classical result by applying the Alternating Harmonic Series under the different types of rearrangements, and also introducing theorems by Lévy and Steinitz, and Wilczyński which are modern extensions …

Currere As A Method For Critical Reflection In The Profession Of Academic Librarianship, Richard A. Stoddart

Boise State University Theses and Dissertations

Academic librarianship has an intimate association with narratives and stories from their traditional role in curating, caring for, and making collections accessible. Librarians also experience the intricacies and challenges of narrative inquiry through the qualitative research they undertake, oral histories they gather, reflective teaching practices they facilitate, and oral-traditions they interact with. Despite these intersections with reflection and narratives, academic librarianship, and library sciences as a whole, have not fully incorporated their own narratives within their practices. Academic librarianship has the ability but not the spaces to critically reflect in a holistic manner. Shadiow (2013) encourages us all to “recall, …

Meet Me Monday: Case Study On A Community Health Program Through The Lens Of The Elaboration Likelihood Model, Joshua Schlaich

Boise State University Theses and Dissertations

This case study employs the Elaboration Likelihood Model as a framework for understanding one Idaho/Oregon Health System's community health program and weekly walking event. Meet Me Monday, a program started in 2013 due to many organizational and federal goals to improve patient population and community health, has been perceived to have struggled with influencing increased and sustained participation. This study focuses on the communicative efforts of the Meet Me Monday community health program, and looks to gain a fuller understanding of the influences and moderating variables to participation.

Utilizing data sources such as semi-structured interviews with program organizers, surveying of …

A Structurational Approach To Organizational Change: Exploring Idaho’S Students Come First Initiative, Matthew Aaron Mccarter

Boise State University Theses and Dissertations

This study embraces a structuration approach to explore how the staff at the Idaho State Education Agency (SEA) reacted to implementing a unique and sweeping K-12 education reform package commonly known as “Students Come First.” By embracing a communicative perspective to studying change in public education, this study provides insights to how public sector employees at an SEA who work in a field governed by a unique set of features (politically-driven policies from elected officials and outcome expectations from the electorate), and who are driven by a passion to serve children engaged in changes that challenged their everyday understandings of …

Two Cryptic Species Within Astragalus Cusickii Delimited Using Molecular Phylogenetic Techniques, Jay Christopher Zimmers

Boise State University Theses and Dissertations

Understanding the source of phenotypic variability is a challenge in the biological sciences. Variation in phenotypes is the result of variation in the genetics and environment the organism experiences, but elucidating the relative contribution of these two parameters can pose problems, especially in the field of systematics. Systematists are challenged to classify biological diversity into groups that share common ancestry. Phenotypic variation can be useful to demonstrate common ancestry, but only when the primary contributor to the variation is under strong genetic control, and thus heritable. Cusick’s milkvetch (Astragalus cusickii) is a perennial forb endemic to the intermountain …

Temporal And Spatial Nutrient Trends Of The Lower Boise River, Southwest Idaho, Brian M. Yelen

Boise State University Theses and Dissertations

Elevated nutrients, orthophosphate and nitrate, in the Lower Boise River (LBR) in southwest Idaho may be attributed to contamination from agriculture runoff draining into tributaries and/or waste water treatment plants (WWTP). To better understand the sources and associated spatial and temporal dynamics of nutrient loading to the LBR, a series of high resolution synoptic sampling events were conducted. Six separate synoptic sampling events were conducted along approximately 65 miles, from upstream near the city of Boise to the confluence with the Snake River, seasonally from July 2012 to October 2013 with a sampling increment of approximately 0.5 miles. The samples …

Tracking And Characterization Of Moving Acoustic Sources Using An Infrasound Array At Volcán Santiaguito, Guatemala, Brian R. Terbush

Boise State University Theses and Dissertations

Active volcanic processes produce large amounts of acoustic energy within the infrasound band (0-20 Hz). Infrasound-sensitive microphones are often installed in addition to other forms of volcano monitoring equipment to increase the ability to remotely detect volcanic activity. In this study, an array of microphones was deployed without any additional sensor types for 36 hours at Santiaguito, Guatemala, to test the detection capabilities of a standalone microphone array. Array processing was applied to the recorded data, through frequency-domain beamforming and calculating a Fisher statistic (F). A changing F-threshold value was applied to differentiate between desired detections, or …

Defining Antecedent Topography At Coral Pink Sand Dunes, Kane County, Utah: The Influence Of Structural Controls On Dune-Field Boundary Conditions And Holocene Landscape Evolution, Elizabeth Janna Rozar

Boise State University Theses and Dissertations

Dune fields are transient features that record climate signatures through changes in mobility, morphology, and patterning. Aeolian geomorphologists are increasingly recognizing the important role that pre-existing, antecedent topography plays in controlling boundary conditions that affect changes in dune patterning. However, the dynamic relationship between antecedent topography and climate-sensitive boundary conditions is relatively unexplored. Here, I define antecedent topography for the Coral Pink Sand Dunes in southern Utah and show that structural controls play an important role in shaping antecedent geomorphic conditions of this dune field. I use ground-based terrestrial laser scanning (TLS) to produce a high-resolution digital elevation model (DEM), …

Multi-Component Active Source Rayleigh Wave Analysis, Gabriel Gribler

Boise State University Theses and Dissertations

Determining how a building site will respond to earthquake ground shaking plays a critical role in proper construction practices. One critical constraint on how a site responds is the near surface shear wave seismic velocity distribution. One commonly used method for indirectly estimating shear wave velocities is Multichannel Analysis of Surface Waves (MASW), which utilizes a spread of vertical geophones to measure Rayleigh wave dispersion. With this approach, phase velocity vs. frequency dispersion curve picks can be used to estimate shear wave velocities with depth. I investigate the use of two (vertical and horizontal inline) component seismic signals to record …

Analysis Of Novel Mta Nucleosidase Inhibitors As Anti-Parasitic Agents, Teslin Marie Botoy

Boise State University Theses and Dissertations

The parasitic protozoa Giardia intestinalis and Entamoeba histolytica are major health concerns and responsible for hundreds of millions of cases of intestinal disease per year. Strains of both parasites have been discovered that show resistance to metronidazole, the most prevalent treatment for these pathogens. Thus, there is a need to identify new drugs and drug targets to combat the growing threat of drug resistant parasites. The parasite enzyme methylthioadenosine nucleosidase (MTN) is one such potential target. Traditional drug development processes take almost a decade and hundreds of millions of dollars to complete. In an effort to shorten that timeline and …

Stable Isotopes Reveal A Disconnect Between Biotic And Abiotic Hydrological Processes In A Seasonally-Dry, Semi-Arid Watershed, Ryan James Mccutcheon

Boise State University Theses and Dissertations

Until recently, it had been thought that humid catchment woody plants transpired primarily mobile soil water that would otherwise flow to streams or recharge groundwater. However, several recent studies have suggested that trees in seasonally-dry humid catchments use primarily tightly-bound, immobile soil water that does not fully mix with new precipitation or participate in translatory flow. McDonnell (2014) called this existence of two, hydrologically-distinct, water pools “the two water worlds hypothesis.” This ecohydrological behavior has important implications for understanding a wide range of catchment processes, including the spatial and temporal variability of evapotranspiration and nutrient cycling, and our abilities to …

Impacts Of Changing Snowmelt Timing On Non-Irrigated Crop Yield, Erin Murray

Boise State University Theses and Dissertations

As climate changes, the final date of spring snowmelt is projected to occur earlier in the year within the western United States. This earlier snowmelt timing may impact crop yield in snow-dominated watersheds by changing the timing of water delivery to agricultural fields. There is considerable uncertainty about how agricultural impacts of snowmelt timing may vary by region, crop type, and practices like irrigation vs. dryland farming. We utilize parametric regression techniques to isolate the magnitude of impact snowmelt timing has had on historical crop yield independently of climate and physiographic variables that also impact yield. To do this, we …

Flexible Thermoelectric Generators For Biomedical Applications, Ryan Stevenson

Boise State University Theses and Dissertations

The market for implantable medical devices is growing rapidly. Research and Markets predicts that by the end of 2015 the market for pacemakers will be 5.1 billion dollars, and a projected growth of 13.82% between 2013 and 2018. The average lifespan of an implantable medical device’s battery is only 5 years, while the projected lifespan of the device itself is 10 years. There is an excess of invasive surgeries occurring to replace these batteries, costing the healthcare system millions of dollars and also causing patients a large degree of discomfort and pain.

Thermoelectric generators have the potential to supplement and …

Identifying The Geographic Origins For The Introduction Of Taeniatherum Caput-Medusae Subsp. Asperum (Medusahead) In The Western United States, Shane Kurtis Skaar

Boise State University Theses and Dissertations

The use of molecular markers can provide insights into the demographic and evolutionary processes that have shaped the genetic diversity of native populations and can be used to identify an invasive species’ geographic origins. Taeniatherum caput-medusae subsp. asperum (medusahead) is a cleistogamous, diploid, annual grass native toEurasia that is now invasive in the western United States (U.S.). Enzyme electrophoresis methods (allozymes) have previously been used to analyze both native and invasive populations of medusahead. Results from these studies suggest that the invasion of medusahead in the westernU.S. stems from multiple introduction events. In addition, 10 of 34 populations from across …

Ecotoxicological Risk And Exposure: A Comparison Of Western Burrowing Owls Nesting In Agricultural And Non-Agricultural Areas In The Morley Nelson Snake River Birds Of Prey National Conservation Area, Matthew Stuber

Boise State University Theses and Dissertations

In some portions of their range, western burrowing owls (Athene cunicularia hypugaea) nest in higher densities near irrigated agricultural areas when compared to non-agricultural, arid habitat. Previous research suggests that owls may associate with agricultural areas because of more reliable and abundant prey, particularly invertebrates. One potential cost of this association, however, is an increased risk of exposure of owls to pesticides that are applied to agricultural fields. I investigated the exposure to and possible effects on burrowing owls of organophosphate, organochlorine, and carbamate pesticides in the Morley Nelson Snake River Birds of Prey National Conservation Area (NCA) …

Recreation Disturbance To A Shrub-Steppe Raptor: Biological Consequences, Behavioral Mechanisms, And Management Implications, Robert J. Spaul

Boise State University Theses and Dissertations

With rapid increases in outdoor recreation, and mounting evidence of impacts to wildlife, public land managers and biologists need better information on the nature of this potential disturbance. Outdoor recreation may impact wildlife negatively via human disturbance or habitat degradation. Golden eagles (Aquila chrysaetos) in shrub-steppe habitats face several current and emerging threats, including increased non-motorized and motorized (off-highway vehicle, OHV) recreation. We tested the hypothesis that recreation affects eagle breeding biology by monitoring eagle behavior and reproduction in response to recreation volume and activity types, and landscape features associated with recreation. We also investigated the probability that …