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A Translational Investigation Of Reinforced Behavioral Variability: Implications For Promoting Behavioral Variability In Individuals With Autism Spectrum Disorder, Ann Galizio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavioral variability is sometimes adaptive and can be maintained by the delivery of reinforcement. Individuals with autism spectrum disorder (ASD) often show restricted and repetitive behaviors. Therefore, interventions to promote behavioral variability in individuals with ASD are needed. The present line of research was designed to inform such interventions by investigating reinforced behavioral variability from basic, applied, and translational perspectives. Each of these laboratory studies involved participants making sequences of well-defined responses, which were compared to previous responses. Responses that meet a variability contingency (i.e., were sufficiently different from previous responses) produced rewards. Studies 1 and 2 were basic experiments, …

Developing And Validating Stealth Assessments For An Educational Game To Assess Young Dual Language Immersion Learners' Reading Comprehension, Frederick J. Poole

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this multiple-paper dissertation is to design a digital game and stealth assessments within the game to assess young second language learners' Chinese reading proficiency. In Chapter 2 (Paper 1), I describe the game designed for this dissertation and how it was implemented in a dual language immersion classroom. This study found that the digital game and in-class implementation led to significant vocabulary and reading comprehension gains. Further, seven types of support that students needed while playing the game were identified. In Chapter 3 (Paper 2), I describe how educational data mining approaches, and more specifically, how data-driven …

The Effects Of Different Organic Pastures On Dairy Heifer Growth And Development, Jacob A. Hadfield

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Raising dairy heifers in a certified organic setting can be difficult for producers. Conventionally, heifers are raised in a confined setting, and fed a total mixed ration (TMR) that is balanced daily to contain all the needed nutrients for developing heifers. Organic producers can use a TMR in their operations, but due to high organic feed costs, many choose to raise their heifers in pasture-based systems. While pasture-based systems may lower costs, heifers on pasture commonly have lower rates of gain, which can be financially burdensome to producers. Grass-legume pastures may help improve rates of gain in heifers on pasture-based …

New World Mammarenaviral Hemorrhagic Fever Virus Determinants Of Infection And Disease, Brady T. Hickerson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Several New World mammarenaviruses (NWM) are able to cause life-threatening hemorrhagic disease in humans. These agents use human transferrin receptor 1 (hTfR1), the main protein involved in cellular uptake of iron, to infect cells. Furthermore, use of hTfR1 correlates with the ability of these viruses to cause severe disease in humans. The most prevalent pathogenic NWM is Jun√≠n virus (JUNV), which is the etiological agent of Argentine hemorrhagic fever (AHF).The pathogenesis of AHF is poorly understood. A cardinal feature of severe cases of AHF is a prolonged increase of serum interferon-a (IFN-a) concentration. This increase is hypothesized to play a …

Influence Of Forage Diversity And Condensed Tannins On Livestock Foraging Behavior, Production And Environmental Impact, Sebastian P. Lagrange

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Eating a combination of forages with different chemistries (i.e., nutrients, beneficial compounds such as tannins) may enhance ruminant nutrition and reduce environmental impacts relative to eating single forages. I explored the influence of offering sheep and cattle all possible combinations of tanniferous (i.e., plants with tannins; birdsfoot trefoil, sainfoin) and non-tanniferous legumes (i.e., plants without tannins; alfalfa) or their monocultures on animal performance, behavior, and methane and nitrogen (N) emissions. Offering choices among these legumes to penned sheep improved intake and diet digestibility relative to feeding monocultures. Mixtures selected by sheep were better digested than mixtures containing equal parts of …

Evaluation Of Enrichment And Identification Media For Isolation Of Common Bovine Salmonella Serotypes, Katie Irene Swanson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salmonellosis is an important cause of diarrhea in humans and animals, which can lead to death in severe cases. Rapid and efficient detection of Salmonella spp. is essential to limit the spread of disease. Many enrichment procedures have been described for the isolation of Salmonella, and often include variations on Rappaport-Vassiliadis medium, which is recommended by the Food and Drug Administration (FDA). The current procedures vary in incubation temperature, incubation time, and type of media used for identification of Salmonella. This project compared four procedures for enrichment and identification of common bovine Salmonella serotypes. We determined the best …

Characterization Of Chinese Hamster Ovary Cell Performance With Pentanoic Acid And N-Acetyl Cysteine Treatment, Joseph Camire

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To improve the cost of producing protein therapeutics manufacturers can attempt to increase the amount of protein produced per unit volume. Some small fatty-acids have shown the ability to increase protein concentrations in some manufacturing systems. An example system is in the industrially important cell line derived from a Chinese Hamster Ovary (CHO). A drawback of adding these fatty-acids is they can increase the rate of cell death.

A potential way to minimize the cell death rate, caused by adding fatty-acids, is to also add additional anti-oxidants. Through a series of studies, we demonstrate production with different fatty-acids, butanoic acid …

The Effects Of Gene Therapy In An Ovine Osteoarthritis Model, Crystal Collier

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Humans rely on the health of their joints for stability and mobility in daily life. In a normal, healthy functioning joint, complex processes maintain joint tissues, including remodeling, lubrication, and immune function among many other tasks. Osteoarthritis (OA) is the most common joint disorder in the U.S. It becomes most prevalent in adults 60+ years of age and causes decreased mobility, discomfort, and in some cases, excruciating pain. In the biological processes of osteoarthritis, the metalloproteinase enzymes responsible for the degeneration of cartilage are upregulated. The inhibitors of metalloproteinase activity are known as Tissue Inhibitor of Metalloproteinases (TIMPs), which keep …

Try The Wine: Food As An Expression Of Cultural Identity In Roman Britain, Molly Reininger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research surrounding cultural identity and food customs throughout history are published often, but any research that attempts to combine the two are often based in more recent history. Few combinations of the two are available, and fewer explore the implications within ancient colonization and expansion.

The research for this thesis was conducted with three viewpoints in mind: the colonization of Britannia from Romans within the new colony, the colonization from the native Briton's perspective, and the Roman citizens within Britannia at the end of Rome's military involvement with the colony. This method was chosen because in the early years of …

Development And Identification Of Metrics To Predict The Impact Of Dimension Reduction Techniques On Classical Machine Learning Algorithms For Still Highway Images, Wasim Akram Khan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

We are witnessing an influx of data - images, texts, video, etc. Their high dimensionality and large volume make it challenging to apply machine learning to obtain actionable insight. This thesis explores several aspects pertaining to dimensional reduction: dimension reduction methods, metrics to measure distortion, image preprocessing, etc. Faster training and inference time on reduced data and smaller models which can be deployed on commodity hardware are a critical advantage of dimension reduction. For this study, classical machine learning methods were explored owing to their solid mathematical foundation and interpretability.

The dataset used is a time series of images from …

Cultural Ecosystem Services Of Agroecosystems Along The Wasatch Front, Utah, Tiffany K. Woods

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Agroecosystems, including peri-urban systems, are important providers of a range of services. However, management of these systems has generally been based on the market value of crops, neglecting to capture the broader public goods that ecosystem services provide to stakeholders. While the ecosystem service framework (Millennium Ecosystem Assessment [MEA], 2005) has been adopted to measure the market and non-market values associated with these services, knowledge gaps persist, particularly with respect to the quantification and valuation of cultural ecosystem services (CES). In this paper, the determination of CES values assigned to agroecosystems by residents of two communities along the Wasatch Front, …

Forage Inventory And Modeling In Uintah And Ouray Reservation Rangelands, Scott N. Zimmer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Uintah and Ouray Reservation in northeastern Utah has not been widely studied, and access to non-tribal members is highly restricted. We sampled vegetation to summarize condition in 300,000 acres of unsurveyed Reservation lands in 2017-2018, combining these data with data collected by the Bureau of Indian Affairs from 2010-2015 to complete an initial rangeland vegetation inventory of the Reservation. This survey was designed to inform management of the area by determining cattle stocking rates and overall ecological condition across the Reservation. Both the density of forage available to cattle and appropriate cattle stocking rates vary greatly throughout management units …

Perceptions And Behavioral Intentions Of Utah 4-H Equine Program Leaders In Teaching Equine Safety To Youth, Katelyn M. Huffman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There is an inherent risk associated with working with youth and large equine. The Utah 4-H Equine program is a volunteer-based program that seeks to properly educate youth on equine husbandry, this includes the topic of safe equine handling practices. The purpose of this study was to explore the perceptions and behavioral intentions of Utah 4-H Equine Program leaders about teaching equine safety, including attitudes, perceived behavioral controls and subjective norms. The survey instrument consisted of multiple choice, fill in the blank, and six-point Likert scale questions regarding personal demographics, experience teaching equine safety, attitudes towards safety, perceived behavioral controls, …

North Dakota Greater Sage-Grouse (Centrocercus Urophasianus) Recovery Project: Using Translocation To Prevent State-Wide Extirpation And Develop Rangewide Protocols, Kade D. Lazenby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Greater sage-grouse (Centrocurcus urophasianus; hereafter sage-grouse) are the largest grouse species in North America. Sage-grouse occupy 11 western states, extending into North Dakota. North Dakota sage-grouse population is part of the Great Plains Management Zone. Conservation of sage-grouse has been on the forefront of conservation management 1990s. In 2015 the USFWS declared sage-grouse were not warranted for listing based on significant management efforts. Translocations of sage-grouse to prevent populations from extirpation are an example of these efforts.

Translocations have been described as movement and release of animals into a novel environment. There have been more than 7200 sage-grouse …

Utah County Level Drought Effect On Cattle Inventories 1981-2016, Fred Openshaw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Utah cattle industry generates 20.6% of sales value for the agricultural sector. As well, this industry encompasses about 34.4% of Utah farms. Besides these figures, Utah cattle ranchers depend heavily upon both public and private lands for grazing as a primary source of feed for their herds. The soil moisture levels of pasturelands impacts the forage yield for a particular year. As a result, the primary purpose of this research is to determine if drought impacts Utah county cattle inventory numbers and what the magnitude of the impact is by analyzing data from 1981 to 2016. A secondary purpose …

Exploring Park Quality In Urban Setting With Environmental Justice, Alternative Measurements, And Social Interaction, Shuolei Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With rapid urbanization, urban green resources, such as parks have become important assets for quality of life in urban settings. Parks provide urban residents with both physical and psychological health benefits through various mechanisms such as physical activity and social interaction. Quality is an important non-spatial dimension of urban parks and has started to gain attention among researchers. To better understand park quality in an urban setting, additional knowledge should be explored. This dissertation studies the quality of urban parks from three different perspectives: 1) the equal distribution of park quality resources and its relationship to environmental justice issues, 2) …

Herbivory Changes Soil Microbial Communities And Greenhouse Gas Fluxes In High-Latitude Wetlands, Karen M. Foley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Herbivory by migratory animals in high-latitude ecosystems is known to impact greenhouse gas emissions from soils. However, few studies quantify the relationships between changes herbivores make to plant communities and soil conditions, and the biological interactions soil organisms have with their environment that result in changes to greenhouse gas emissions. These relationships are important to understand because they capture important carbon-climate feedbacks that may have implications for climate change policy and land management decisions, especially since high-latitude systems are experiencing unprecedented changes in climate.

In the Yukon-Kuskokwim (Y-K) Delta in western Alaska, herbivory by migratory geese affects the magnitude of …

A Case Study Comparing The Life Skills Development And Knowledge In Youth Participants Of Horseless And Traditional Horse Programs In Utah, Haley M. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Traditional horse 4-H programs develop life skills and knowledge in youth. Horseless horse programs lack evaluation for the same benefits. This study evaluated and compared four horseless and seven traditional horse participants from Washington County 4-H in Utah for gains in horse knowledge and development of 10 life skills that are commonly found in 4-H curriculum today: leadership, teamwork, self-responsibility, personal safety, problem solving, decision making, critical thinking, goal setting, communication, and concern for others.

The researcher conducted interviews to learn about life skill experiences of the horse program participants and discover what barriers prevented horseless youth from participating in …

Ranchers Adapting To Climate Variability In The Upper Colorado River Basin, Utah, Hadia Akbar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Changes in climate influence agricultural production. This study looks at the impacts of climate variability in the Utah regions of the Upper Colorado River Basin by combining regression techniques with interview data to explore how climate variability affects agricultural production and how the farmers are adapting their practices to these changes. The results show that climate does not have any significant impact on cattle and hay production in the study area on a decadal scale. However, on an annual basis temperature seems to have more impact than precipitation. Among non-climatic variables, commodity prices and their regulations by the government are …

Micro-Biosensor Devices For Biochemical Analysis Applications, Han Zhang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A biosensor is an analytical device integrating a biological element and a physicochemical transducer that convert a biological response into a measurable signal. The advantages of biosensors include low cost, small size, quick, sensitivity and selectivity greater than the conventional instruments. Biosensors have a wide range of applications ranging from clinical diagnostics through to environmental monitoring, agriculture industry, et al.

The different types of biosensors are classified based on the sensor device as well as the biological material. Biosensors can be broadly classified into (piezoelectric, etc.), electrochemical biosensors (potentiometric, amperometric, etc.), and optical types of biosensors (fiber optics, etc.).

Here, …

Working Memory And Syntactic Processing In Bilingual And Monolingual Children, Carla I. Orellana

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine the relationship between complex auditory working memory, syntactic knowledge, and complex sentence comprehension in bilingual and monolingual children using both offline (behavioral) and online (eye-tracking) measures. There were 19 children in the monolingual group and 19 children in the bilingual group with an average age of 11 years. The children listened to sentences, while looking at a screen with three images of the three nouns in the sentence. They were instructed to select the doer of the action (agent). Their eye movements were recorded as they completed this task. The four sentence …

Determination Of Gas Emission Characteristics From Animal Wastes Using A Multiplexed Portable Ftir-Surface Chamber System, Pakorn Sutitarnnontr

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Livestock production is a growing source of air pollution at regional, national, and global scales. Improved livestock manure management has the potential to reduce environmental impacts; however, there is an urgent need for cost-efficient, reliable, and easy to maintain measurement and monitoring capabilities to precisely quantify emissions from livestock manure. This research describes and evaluates a novel measurement method based on the multiplexed portable Fourier Transform Infrared (FTIR) spectroscopy analyzer - surface chamber techniques for continuous measurements and monitoring gas emissions from manure sources. The multiplexing system was designed and developed to automate the chamber network, controlling the movement of …

A Temporal Information-Theoretic Model Of Suboptimal Choice, Paul J. Cunningham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Humans and animals often make decisions not in their long-term best interest. In one example, called suboptimal choice, pigeons sacrifice food for food-predictive stimuli. The study of suboptimal choice can reveal insights into the role of reward-predictive stimuli in maladaptive decision-making that characterizes numerous behavioral disorders. However, there is currently little evidence that rats engage in suboptimal choice, thereby raising questions about the species-generality of suboptimal choice. According to the temporal information-theoretic model, developed in Chapter 2, suboptimal choice emerges when pigeons pay more attention to the bits of temporal information conveyed by food-predictive stimuli than the rate of food …

Development And Validation Of A Synchronous Model To Simulate Skeletal Muscle Damage Due To Spaceflight Ionizing Radiation And Microgravity, Lori M. Caldwell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Astronauts traveling or researching in space are subject to a harsh environment that includes high levels of ionizing radiation and microgravity. Ionizing radiation is dangerous to overall health because it causes double-stranded DNA breaks, increases the production of free radicals or reactive oxygen species, and leads to an enhanced risk of cardiovascular disease and cancer over a person’s lifetime. Similarly, microgravity is hazardous to astronaut health because humans require gravity to maintain a healthy heart and muscular and vascular systems.

Both ionizing radiation and microgravity have been studied individually in previous research, but there is a lack of information on …

Do Didymosphenia Geminata Blooms Affect Fishes In The Kootenai River Basin?, Niall G. Clancy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Didymosphenia geminata (Didymo) is a nuisance algae that can cover entire streambeds under certain environmental conditions. Numerous studies have shown that it changes the composition of stream invertebrates. Fishes in many headwaters are known to feed almost exclusively on invertebrates. Thus, there is concern changes to the amount or type of invertebrates caused by Didymo blooms will impact fishes such as trout, charr, and sculpin. In the Kootenai River basin of Montana and British Columbia, we examined stream invertebrates and fish diets, condition, and growth across 25 streams during the summers of 2018 and 2019. The severity of Didymo blooms …

Interspecific Differences In Stressor Tolerance Drive Community-Level Changes In A Small Aquatic Ecosystem, Jennifer M. Weathered

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The global human population is expected to reach 9.8 billion by 2050 and an increase in food yield will be needed to provide for the future generations. Insects are among the biggest threats to food production and are therefore the subject of intense chemical control through the application of pesticides. The ability of insects to evolve resistance to pesticides after repeated use has been documented. However, how evolved responses affect individuals’ behaviors, their interactions with others, and how these factors impact overall patterns in distribution remains relatively unexplored in the bromeliad.

The aquatic insect communities housed in water-holding tropical plants …

Debitage Attributes, Obsidian Source Analysis, And Prehistoric Mobility In Southeastern Idaho, Ben Joaquin Zumkeller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to complement existing knowledge on prehistoric mobility in eastern and southern Idaho. I add specific detail regarding the use of Skull Canyon and its well-known Birch Creek rockshelters during hunter-gatherers’ logistical foraging rounds.

In addition, my research is a case study in combining debitage attribute analysis and intensive toolstone sourcing to read prehistoric mobility. Prior research has looked to obsidian toolstone sourcing to understand prehistoric eastern and southern Idaho mobility. However, no prior research has involved sourcing an entire, stratified assemblage of prehistoric debitage.

I collected flake attribute data from all 2,846 pieces of …

Arsenic Release From Surface Soils Induced By Stormwater Bioretention, Kaisa H. Patterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Arsenic is a naturally occurring element known for its chronic and acute toxicity. The solubility of arsenic is highly dependent on environmental conditions. The soils of Cache Valley, UT, contain naturally occurring arsenic.

Bioretention systems rely on a combined plant-soil system to remove pollutants carried by stormwater, typically nitrogen, phosphorus, dissolved organic carbon, and select metals. Phosphate from stormwater potentially increases arsenic mobility, which makes stormwater pollutant loading an important factor for evaluating risks associated with stormwater bioretention. Pollutant removal in these systems occurs through sorption of contaminants onto the soils, physical filtration by the soil media, and uptake by …

Effect Of Dietary Maillard Reaction Products On Insulin Sensitivity, Metabolic Inflammation And Intestinal Inflammation In Mice Fed The Total Western Diet, Siyu Xiao

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Maillard reaction products (MRPs) are generated when proteins or amino acids are heated with reducing sugars. In previous studies, baking whole diet pellets at a high temperature has been the most common way to promote MRP formation. However, baking diets also induces other chemical reactions besides MRP production, for example lipid oxidation. In this study, only casein and sugars were cooked to generate MRPs. Thus, a complementary experiment was conducted to determine how baking diet pellets affects lipid oxidation.

Previous rodent studies showed MRPs either induced weight gain and or impaired glucose tolerance. On the other hand, dietary MRPs were …

Nonpoint Source Pollution Control Using A Multi-Objective Optimization Tool For Best Management Practices Selection And Spatial Placement In The Lower Bear River Watershed, Utah, Ali A. Salha

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation presents a set of approaches to help address water quality problems related to total phosphorus loads in water bodies. Water quality degradation is caused by many nonpoint sources such as agricultural runoff, fertilizers applications, and bank erosion. Three studies present methodologies for water quality protection from degradation in watersheds. The first study demonstrates the application of a watershed simulation tool that can quantify flows in the watershed, the amount of released pollutants and identify the areas contributing to the pollutants’ release in the watershed. The second study presents a simple combination tool that can pair potential management practices …