Digital Commons Network^™

Humans As Sensors: The Influence Of Extreme Heat Vulnerability Factors On Risk Perceptions Across The Contiguous United States, Forrest Scott Schoessow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Extreme heat events are the deadliest natural hazard in the United States and will continue to get worse in the coming years due to the effects of climate change. As a result, more people will experience deadly heat conditions. This highlights the need for decision-makers to develop better strategies for preventing future losses. How badly individuals are affected by extreme heat depends on many circumstances, such as how high temperatures actually are, weather conditions, and location. For example, a dry 90 °F day in Phoenix is probably more tolerable than a humid 90 °F day in New Orleans for most …

“[Taking] Responsibility For The Community”: Women Claiming Power And Legitimacy In Technical And Professional Communication In India, 1999-2016, Breeanne Matheson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Though the field of technical and professional communication has long been saturated with the narratives of Euro-Western males, technical and professional communication as a field has a responsibility to expand the lens of study to include the experiences of global and nontraditional practitioners. This study examines the experiences of Indian women working as practitioners, building power and legitimacy in a globalized economy. Drawing from interviews with 49 practitioners as well as an analysis of historical documents, this study examines the methods that Indian practitioners have used to build power and legitimacy by founding professional organizations, leveraging their educational opportunities, and …

Teaching Landscape Construction Using Augmented Reality, Arshdeep Singh

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis describes the design, development, and evaluation of an interactive Microsoft HoloLens application that projects landscape models in Augmented Reality. The application was developed using the Unity framework and 3D models created in Sketchup. Using the application, students can not only visualize the models in real space but can also interact with the models using gestures. The students can interact with the models using gaze and air-tap gestures.

Application testing was conducted with 21 students from the Landscape Architecture and Environmental Planning department at Utah State University. To evaluate the application, students completed a usability survey after using the …

The Integration Of Reading, Writing, Speaking, And Listening Skills In The Middle School Social Studies Classroom, Marianne Bristow Evans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this feasibility study is to provide evidence of how integrating reading, writing, speaking, and listening skills into eighth-grade social studies instruction facilitates student understanding of content material and ability to write about social studies content. In this within-subjects paired-samples research study, 197 eighth-grade participants received instruction in a social studies content area and in argumentative writing. Data from a criterion-referenced social studies pre and posttest and data from pre and post instruction writing samples were analyzed to evaluate the influence of the integration of literacy tasks in middle school social studies classrooms on content area knowledge acquisition …

Undercurrents: The Life Cycle Of An Outdoor Experiential Learning Program In A Mainstream Public Middle School, Eric Jackson Newell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This autoethnographic study details the researcher’s experiences as a high school student and as a new teacher—which eventually led to the creation, implementation, and 8-year life cycle of Mount Logan Discovery, a sixth-grade integrated outdoor experiential learning program in a public middle school. Routine field experiences established academic background knowledge, fostered relationships, built confidence, and provided purpose for curriculum standards. Perspectives of parents, students, colleagues, administrators, and donors add detail. This study responds to calls qualitative studies that focus on how outdoor programs are conducted, the descriptions of experiences and perceptions of students and parents, and how participants were changed …

Patterns Of Threatened Vertebrates Based On Trophic Level, Diet, And Biogeography, Shaley A. Valentine

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Humans have indirectly and directly contributed to the extinction of over 500 species within the past 500 years, a rate far higher than we have seen in the past. The high extinction rate and the fact that 18% of vertebrates may become extinct within the next century have pushed Earth into a biodiversity crisis. Understanding what makes species more at risk of extinction is needed to protect Earth’s biodiversity.

Generally, it is expected that predators have greater extinction risk than omnivores and herbivores because predators are larger in body size, depend on other animal species for food, need large home …

Weaving A Religious Community: Monasticism, Authority, And Theology In Gujarat, 1830-1905, Kirtan Patel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis demonstrates the intersection of caste, doctrine, religious authority and monasticism in the Swaminarayan sampradāy, a Hindu devotional tradition founded by Sahajānand Svāmī. Religious traditions affected indirectly or minimally by colonialism or the nationalist struggle have seldom been rigorously studied. This thesis brings attention to the Swaminarayan sampradāy to highlight how pervasive societal discourses like that of caste and internal doctrinal developments, impacted religious developments concerning authority, hierarchy, and power. The reification of a doctrine and the creation of a theological office, coupled with the deification of a monk, Guṇātītānand Svāmī, and his low-caste disciple Prāgjī manifested a …

A Modern Plague: U.S. Racial And Ethnic Vaccination Disparities During The 2009 H1n1 Influenza Pandemic, Andrew E. Burger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

On June 11, 2009 the World Health Organization announced that a novel strain of H1N1 influenza was being classified a Phase 6 pandemic, the highest level of alarm indicating that the disease was present worldwide and its spread was inevitable. While seasonal influenza epidemics occur annually, the 2009 H1N1 strain was the first novel pandemic influenza since the 1968 Hong Kong flu. The 2009 H1N1 pandemic provides a case study of how the U.S. population responded to an emergent and potentially lethal infectious disease. The richness and variety of public health data presents an opportunity to examine predictors of vaccination …

Landscape Values And Aesthetic Preferences Across The Front Range, Emily J. Wilkins, Hongchao Zhang, Derek Van Berkel, Monica A. Dorning, Scott M. Beck, Jordan W. Smith

All Current Publications

Boulder’s Open Space and Mountain Parks (OSMP) lands are managed to provide a diverse set of benefits valued by Boulder’s residents as well as tourists. Not all OSMP lands provide the same set of benefits however. Understanding how the values associated with OSMP lands vary across the region can provide managers with insights into how best to allocate resources so that they yield the maximum public benefit. In addition to an understanding of the values visitors associate with OSMP lands, management can benefit from knowledge of how different features of the landscape impact user experiences, both positively and negatively.

Genomic Variation Of Introduced Salvinia Minima In Southeastern United States, Carol A. Rowe, Donald P. Hauber, Paul G. Wolf

Ecology Center Publications

Common salvinia, Salvinia minima Baker (Salviniaceae), is a small, floating aquatic fern native to Central and South America that has invaded fresh water bodies in southeastern United States since the 1930s. We examined genetic variation across much of the introduced range of this species in the United States using codominant RAD-seq markers. Data from over 600 variable loci showed a reduction in heterozygosity from east to west in addition to a corresponding trend in assignment of samples to one of two genetic groups. Our data are consistent with previous published work and with the hypothesis that common salvinia had a …

Prioritizing Phylogenetic Diversity Captures Functional Diversity Unreliably, Florent Mazel, Matthew W. Pennell, Marc W. Cadotte, Sandra Diaz, Giulio Valentino Dalla Riva, Richard Grenyer, Fabien Leprieur, Arne O. Mooers, David Mouillot, Caroline M. Tucker, William D. Pearse

Biology Faculty Publications

In the face of the biodiversity crisis, it is argued that we should prioritize species in order to capture high functional diversity (FD). Because species traits often reflect shared evolutionary history, many researchers have assumed that maximizing phylogenetic diversity (PD) should indirectly capture FD, a hypothesis that we name the “phylogenetic gambit”. Here, we empirically test this gambit using data on ecologically relevant traits from >15,000 vertebrate species. Specifically, we estimate a measure of surrogacy of PD for FD. We find that maximizing PD results in an average gain of 18% of FD relative to random choice. However, this average …

It's Time To Listen: There Is Much To Be Learned From The Sounds Of Tropical Ecosystems, Jessica L. Deichmann, Orlando Acevedo-Charry, Leah Barclay, Zuzana Burivalova, Marconi Campos-Cerqueira, Fernando D'Horta, Edward T. Game, Benjamin L. Gottesman, Patrick J. Hart, Ammie K. Kalan, Simon Linke, Leandro Do Nascimento, Bryan Pijanowski, Erica Staaterman, T. Mitchell Aide

Wildland Resources Faculty Publications

Knowledge that can be gained from acoustic data collection in tropical ecosystems is low‐hanging fruit. There is every reason to record and with every day, there are fewer excuses not to do it. In recent years, the cost of acoustic recorders has decreased substantially (some can be purchased for under US$50, e.g., Hill et al. 2018) and the technology needed to store and analyze acoustic data is continuously improving (e.g., Corrada Bravo et al. 2017, Xie et al. 2017). Soundscape recordings provide a permanent record of a site at a given time and contain a wealth of …

Climatic Drivers Of Ponderosa Pine Growth In Central Idaho, Joseph L. Pettit, R. Justin Derose, James N. Long

Wildland Resources Faculty Publications

Despite the widespread use of ponderosa pine as an important hydroclimate proxy, we actually understand very little about its climate response in the Northern Rockies. Here, we analyze two new ponderosa pine chronologies to investigate how climate influences annual growth. Despite differences in precipitation amount and timing and large elevation differences (1820 m versus 1060 m), ring width at both sites was strongly driven by water availability. The mid-elevation, water-limited site responded well to previous fall precipitation whereas the wetter, high-elevation site responded to growing season precipitation and temperature. When precipitation and temperature were simultaneously accounted for using the standardized …

Rescaling Drought Mitigation In Rural Sri Lanka, Emily Burchfield, Nicholas E. Williams, Amanda Carrico

Environment and Society Faculty Publications

Smallholder farmers with limited governmental and institutional support often devise innovative strategies to mitigate the impacts of water stress on agricultural production. These drought mitigation strategies can be more culturally and ecologically suitable than top-down, “technocratic,” strategies. Top-down drought mitigation approaches, however, often link farmers with significant infrastructures, financial resources, and specialized knowledge. Successful rescaling of localized mitigation practices can integrate the benefits of localized mitigation with resources available at larger scales. This paper describes the rescaling of a Sri Lankan drought mitigation practice known as bethma. We focus on the process of rescaling, specifically what is lost and …

The Uneven Influence Of Climate Trends And Agricultural Policies On Maize Production In The Yucatan Peninsula, Mexico, Sofia Mardero, Bridgit Schmook, Jorge Omar Lopez-Martinez, Lizette Cicero, Claudia Radel, Zachary Christman

Environment and Society Faculty Publications

Maize is an important staple crop in Mexico, and the recent intensification of climate variability, in combination with non-climatic forces, has hindered increases in production, especially for smallholder farmers. This article demonstrates the influence of these drivers on maize production trends in the three states of the Yucatan Peninsula using a mixed methods approach of climatic analysis and semi-structured interviews. Climate trend analysis and generalized additive models (GAMs) demonstrate relationships between production and climatic variability, using 1980–2010 precipitation and temperature data. Data from forty interviews with government officials and representatives of farmers' associations (gathered in 2015 and 2016) highlight the …

What Does Hidden Curriculum In Engineering Look Like And How Can It Be Explored?, Idalis Villanueva, Laura Gelles, Marialuisa Di Stefano, Buffy Smith, Renetta G. Tull, Susan M. Lord, Lisa Benson, Anne Therese Hunt, Donna M. Riley, Gery W. Ryan

Engineering Education Faculty Publications

This work in progress paper describes the initial stages of a project which aims to characterize the mechanisms of hidden curriculum (HC) in engineering and identify methods for exploring this phenomenon. To effectively study the complex nature of HC, this work brings together researchers with a range of expertise (sociology, engineering education, engineering, statistics, policy analysis, curriculum and instruction) to develop a holistic approach to explore HC in engineering. This work describes the process of gathering input from this multidisciplinary team as well as the literature to develop a mixed-method instrument and model to explore the mechanisms behind HC in …

Beyond Metrics? The Role Of Hydrologic Baseline Archetypes In Environmental Water Management, Belize A. Lane, Samuel Sandoval-Solis, Eric D. Stein, Sarah M. Yarnell, Gregory B. Pasternack, Helen E. Dahlke

Civil and Environmental Engineering Faculty Publications

Balancing ecological and human water needs often requires characterizing key aspects of the natural flow regime and then predicting ecological response to flow alterations. Flow metrics are generally relied upon to characterize long-term average statistical properties of the natural flow regime (hydrologic baseline conditions). However, some key aspects of hydrologic baseline conditions may be better understood through more complete consideration of continuous patterns of daily, seasonal, and inter-annual variability than through summary metrics. Here we propose the additional use of high-resolution dimensionless archetypes of regional stream classes to improve understanding of baseline hydrologic conditions and inform regional environmental flows assessments. …

A Cybergis Integration And Computation Framework For High‐Resolution Continental‐Scale Flood Inundation Mapping, Yan Y. Liu, David R. Maidment, David G. Tarboton, Xing Zheng, Shaowen Wang

Civil and Environmental Engineering Faculty Publications

We present a Digital Elevation Model (DEM)-based hydrologic analysis methodology for continental flood inundation mapping (CFIM), implemented as a cyberGIS scientific workflow in which a 1/3rd arc-second (10m) Height Above Nearest Drainage (HAND) raster data for the conterminous U.S. (CONUS) was computed and employed for subsequent inundation mapping. A cyberGIS framework was developed to enable spatiotemporal integration and scalable computing of the entire inundation mapping process on a hybrid supercomputing architecture. The first 1/3rd arc-second CONUS HAND raster dataset was computed in 1.5 days on the CyberGIS ROGER supercomputer. The inundation mapping process developed in our exploratory study couples HAND …

How Useful Is Travel-Based Multitasking? Evidence From Commuters In Portland, Oregon, Patrick A. Singleton

Civil and Environmental Engineering Faculty Publications

As research on travel-based multitasking—doing other things while traveling—becomes more common, some studies also investigate the quality or value of activity participation during travel. This idea of travel usefulness is a component of the positive utility of travel concept; understanding the benefits of travel-based multitasking is important for calculating accurate economic values trading-off travel time and other variables. This study analyzed travel usefulness and its potential determinants using a 2016 survey of about 650 commuters in the Portland, Oregon, area. Ordered logit models identified factors associated with subjective assessments of the overall usefulness of activity participation while on a recent …

The Truncated Bell: An Enigmatic But Pervasive Elevational Diversity Pattern In Middle American Ants, John T. Longino, Michael G. Branstetter

All PIRU Publications

Studies on elevation gradients in Panama and Costa Rica have shown that leaf-litter ants exhibit a mid-elevation peak in diversity. This diversity pattern has been observed in other groups and regions, but uncertainty remains as to just how pervasive it is and what might explain it. Here we examine the robustness of the mid-elevation peak in ant diversity across the entire Middle American corridor, from Veracruz, Mexico, to Costa Rica. We sampled 56 sites distributed throughout Middle America. All were in closed-canopy evergreen wet forest, spanning 11° latitude, from near sea level to 2600 m elevation. Ants were extracted from …

Multispectral Remote Sensing For Yield Estimation Using High-Resolution Imagery From An Unmanned Aerial Vehicle, Mahyar Aboutalebi, Alfonso F. Torres-Rua, Niel Allen

AggieAir Publications

Satellites and autonomous unmanned aerial vehicles (UAVs) are two major platforms for acquiring remotely-sensed information of the earth’s surface. Due to the limitations of satellite-based imagery, such as coarse spatial resolution and fixed schedules, applications of UAVs as low-cost remote sensing systems are rapidly expanding in many research areas, particularly precision agriculture. UAVs can provide imagery with high spatial resolution (finer than 1 meter) and acquire information in visible, near infrared, and even thermal bands. In agriculture, vegetation characteristics such as health, water stress, and the amount of biomass, can be estimated using UAV imagery. In this study, three sets …

On The Relationship Between Phylogenetic Diversity And Trait Diversity, Caroline M. Tucker, T. Jonathan Davies, Marc W. Cadotte, William D. Pearse

Biology Faculty Publications

Niche differences are key to understanding the distribution and structure of biodiversity. To examine niche differences, we must first characterize how species occupy niche space, and two approaches are commonly used in the ecological literature. The first uses species traits to estimate multivariate trait space (so‐called functional trait diversity, FD); the second quantifies the amount of time or evolutionary history captured by a group of species (phylogenetic diversity, PD). It is often—but controversially—assumed that these putative measures of niche space are at a minimum correlated and perhaps redundant, since more evolutionary time allows for greater accumulation of trait changes. This …

Making Strides: State Of The Practice Of Pedestrian Forecasting In Regional Travel Models, Patrick A. Singleton, Joseph C. Totten, Jaime P. Orrego-Oñate, Robert J. Schneider, Kelly J. Clifton

Civil and Environmental Engineering Faculty Publications

Much has changed in the 30 years since non-motorized modes were first included in regional travel demand models. As interest in understanding behavioral influences on walking and policies requiring estimates of walking activity increase, it is important to consider how pedestrian travel is modeled at a regional level. This paper evaluates the state of the practice of modeling walk trips among the largest 48 metropolitan planning organizations (MPOs) and assesses changes made over the last 5 years. By reviewing model documentation and responses to a survey of MPO modelers, this paper summarizes current practices, describes six pedestrian modeling frameworks, and …

Uncovering The Soil Surveys, Sandra Weingart, Jen P. Kirk

Library Faculty & Staff Presentations

No abstract provided.

Geographic Variation In Sex Ratios Of The Us Immigrant Population: Identifying Sources Of Difference, Erin Trouth Hofmann, E. Miranda Reiter

Sociology, Social Work and Anthropology Faculty Publications

This paper describes geographic variation in the sex composition of the foreign-born population in the US since 1990, and uses Blinder-Oaxaca decomposition to identify key sources of variation in regional sex ratios. We use data from the 1990 and 2000 US Censuses, and from the 2007–2011 American Community Survey, to create estimates of the size and characteristics of foreign-born populations at the level of Consistent Public-Use Microdata Areas. We find substantial local- and region-level variation in population sex ratios, with the highest sex ratios in the South and Midwest. This variation is partly explained by differences in the age- and …

Discussing The “Positive Utilities” Of Autonomous Vehicles: Will Travellers Really Use Their Time Productively?, Patrick A. Singleton

Civil and Environmental Engineering Faculty Publications

Autonomous vehicles (AVs) are expected to reshape travel behaviour and demand in part by enabling productive uses of travel time—a primary component of the “positive utility of travel” concept—thus reducing subjective values of travel time savings (VOT). Many studies from industry and academia have assumed significant increases in travel time use and reductions in VOT for AVs. In this position paper, I argue that AVs’ VOT impacts may be more modest than anticipated and derive from a different source. Vehicle designs and operations may limit activity engagement during travel, with AV users feeling more like car passengers than train riders. …

Values, Mushfaking, And Literacy In Disability: Applying James Paul Gee’S Discourse Theory To The Deaf And Mental Health Communities, Adrienne Griffiths

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The disability community has been a historically marginalized group and continues to be. Many advocates for inclusive language feel uncomfortable around the disability community because they are uncertain how to act and speak. There are two forms of language syntaxes that people primarily use to refer to someone with a disability: People-first language and Identity-first language. People-first language identifies someone first, then refers to their disability, such as “person with autism.” The second framework, Identity-first language, includes referring to someone’s disability first, then by another attribute. In other words, “autistic person.”

Both forms of language syntaxes have many reasons as …

Impacts Of Hydroelectric Dams On Aquatic Macroinvertebrate Oviposition Strategies: The Role Of Desiccation, Jesse R. Fleri

Undergraduate Honors Capstone Projects

Previous studies quantifying the density, distribution and diversity of aquatic insects overwhelmingly focus on larval life stages. However, many aquatic insects exhibit selective oviposition behaviors, with a preference for emergent substrates along a river's edge. The practice of hydropeaking creates an artificial intertidal zone that is absent from natural rivers and to which freshwater organisms are not adapted. We hypothesized that this novel disturbance could reduce the availability and temporal persistence of oviposition habitats resulting in egg mortality. To test this hypothesis, we quantified the oviposition behavior of four aquatic insects using a hierarchical field survey of habitat availability and …

Stories Behind The Berlin Wall: Lesson Modules, Nicholas Redmon

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

I have grappled with my primary collection just as scholars and popular authors have with bringing these stories together with political histories. My goal is to create a digital map and analysis on specific themes like education and guard duty from the lives lived behind the Wall and their discourse with the government. I would like to explore how the divide impacted lives in 1961, created a GDR Society, and produced a division still felt in Germany today. The target audience of this project is U.S. students in high school and higher education. Students will be able to access timely …

Constraints Of Haunted Heritage Tourism In Logan, Utah, Kylie Schroeder

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

It has become common in Salem, Savannah, New Orleans, Edinburg, or Gettysburg, to witness groups of people being led through the darkened streets as part of a ghost tour or haunted history walk. An altered form of commercialized legend tripping, these companies offer guided tours, feature spooky stories, and often showcase local history. However, the trend of haunted heritage tourism, especially in the form of ghost walks and haunted history tours, has spread beyond places with national or international reputations for hauntings and is now growing in small towns whose stories are rarely shared beyond the local populace.

This thesis …