Digital Commons Network^™

Bedrock Geology Map Of The Naomi Peak 7.5' Quadangle, Cache County, Utah And Novel Age Constraints On Its Cambrian Strata, Hannah R. Cothren

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Geologists use various “rock-clocks” in order to interpret the timing and tempo of events in Earth’s history. These include global geochemical events in the oceans (chemostratigraphy), the evolution of certain fossil species (trilobite biostratigraphy), and the radiogenic decay of uranium to lead in certain mineral such as zircon (U-Pb geochronology). Integrating these methods in the stratigraphic record in one location can provide a well-constrained timeline for a select part of the Geologic, or Deep Time, record. This technique is especially important in the Cambrian Period (538.8 to 486.9 million years; Ma), which sets the stage for life today with the …

Functional Characterization Of The Newly Discovered Type V Crispr-Cas Protein Cas12a2, Dylan J. Keiser

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Similarly to people, bacteria are under the treat of infection by viruses. To circumvent these threats, bacteria evolve complex immune systems. Our understanding of some of these immune systems has led to many advancements in the field of Biotechnology including tools that made expressing proteins for study in a lab easier, tools that revolutionized the feasibility of gene editing, and tools that could change the way we think about viral diagnostics and cancer therapeutics. A certain type of immune system that bacteria use to fight virus is called a CRISPR system. Presented here is work to understand the function of …

Investigating The Use Of Quartz Luminescence And Rock-Color Alteration To Characterize Wildfire Exposure; Applied To The 2020 Mangum Fire, Kaibab Plateau, Arizona, April I. Phinney

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wildfires appear to be increasing in size, severity, and frequency. Land managers need information on past wildfire behavior to make effective and adaptive land management plans. However, there are only a few techniques and data sources that provide information on past fire heating. This study aims to provide new methods to equip managers with a more robust understanding of historic and modern fire behavior. Fire behavior is assessed using novel methods that can assess soil and rock response to past wildfire heat exposure.

This study examined samples from the 2020 Mangum Fire, in northern Arizona. Sediment and rock were gathered …

Normative Evaluations Of Resource Conditions: The Influence Of Visitor Characteristics And Implications For Recreation Management In Urban-Proximate Parks, Jordan E. Nesbitt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Urban-proximate parks and protected areas provide a unique recreation landscape to individuals living in and near urban centers. They have been shown to provide similar recreation experiences to traditionally studied parks and protected areas such as National Parks, National Forests and Wilderness areas. This study takes place in a set of four urban-proximate parks in Orange County, California, USA. These parks are designated as urban-proximate because they are located within 100 miles of an urban center with 1 million or more people. Using norm theory, a well vetted social science theory, this work sought to identify thresholds of acceptability for …

A Theoretical Trade-Off Between Wave Drag And Sonic Boom Loudness Due To Equivalent Area Changes On A Supersonic Body, Nolan L. Dixon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The NASA University Leadership Initiative (ULI) titled ”Adaptive Aerostructures for Revolutionary Civil Supersonic Transportation” consists of a team of university and industry partners studying the feasibility of reducing the perceived loudness of the sonic boom by introducing an adaptive geometry at localized regions of an aircraft’s outer-mold line. The Utah State University AeroLab is a member of this ULI team and has produced low-fidelity tools to predict the aerodynamic and boom loudness effects from localized changes to the geometry.

Such changes to the geometry affect both the sonic boom loudness and wave drag; however, the precise relationship between boom loudness …

Relativistic, Continuum Drift-Kinetic Capability In The Nimrod Plasma Fluid Code, Tyler Markham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A ”runaway” electron is an electron that, through a self-reinforcing process, accelerates to relativistic speeds. At multiple points during tokamak discharges, relativistic runaway electron (RE) beams can form. RE beams pose a serious risk in the form of severe damage to plasma facing components in ITER and future burning plasma reactors. Early RE studies used simplified geometric and transport models, but enabled feedback on the overall plasma evolution. This feedback is important for understanding the evolution of the RE current column. The work in this thesis is an important step toward self-consistently evolving an RE distribution in the plasma fluid …

Estimating The Effects Of Forms Of Computer-Based Scaffolding In Problem-Centered Stem Instruction, Mason Reed Lefler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Much like Post-Sputnik 1950s era there is a lot of interest in making sure that United States does not fall behind in Science, Technology, Engineering, and Mathematics (STEM) education. STEM learners are often presented with complex problems to solve both as part of their education and their work. Engineering education suffers from student dropout often due to how difficult it is to support students through solving problems. This dissertation is a close look at computer-based scaffolding, a method of supporting learners during problem solving through computer software. The first paper in this dissertation examines and resolves some of the debate …

The Strategy Of Metallgesellschaft: A Sophisticated Catallactic Analysis, Janette Goodridge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the fall of 1993, German company Metallgesellschaft, Ag experienced a loss of over one billion dollars. This loss resulted from its hedging strategy, and was one of the largest losses of its kind at the time. Naturally this raised interest regarding what caused these huge losses, and called into question the events and circumstances surrounding and leading up to this disaster. There are two basic schools of thought regarding Metallgesellschaft's strategy. The first is that it was a good strategy and had the potential to be successful and profitable. The other is that its strategy was risky and speculative. …

From Lesson Plan To Observation To Self-Assessment In A Chinese As A Second Language Class, Yu-Shan Lin

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

This portfolio is a compilation of what the author has learned in the field of Chinese as a second language in the Master of Second Language Teaching program at Utah State University. There are three main sections in the portfolio. The first section contains the author’s teaching philosophy statement, with a focus on the communicative approach, a game-based approach, and alternative assessment. The second section consists of a reflection on a classroom observation. The main paper presents how the author designed a lesson plan and implemented it, as well as her analysis and introspection on a video recording of the …

A Study Of Electron Plasma Oscillations Using The Nimrod Code, Mckay Murphy

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

A plasma, whether ”hot” or ”cold,” magnetized or unmagnetized, electrostatic or electromagnetic, exhibits normal modes of oscillation. Critical to understanding the stability of a plasma is the study of these normal modes. Waves originate from the long-range electric interactions between charged particles. This work will consider a class of waves known as Langmuir waves. These waves occur when a group of electrons are displaced with respect to the ions, with the electric Coulomb force playing the role of the restoring force of the oscillation [1]. Since the mass of ions is much greater than that of electrons, we can approximate …

A Novel Computational Method To Compute Rock Scour Due To Dam Overtopping, Erik F. R. Bollaert

Protections Conference

Flood events generating potential risk for dam overtopping may become more frequently in the future, especially because of increasing climate change. Crest overflows at arch dams generally impact the downstream rock mass very close to the dam foundation. As such, any scour of the rock mass generated by this phenomenon may potentially endanger the stability of the dam and its appurtenant structures. Hence, pertinent assessment of this scour formation through space and time is becoming increasingly relevant to dam safety. This paper presents a novel computational method for detachment of prismatic rock blocks from their mass when impacted by high-velocity …

Applying The Submerged Jet Erosion Test To Embankment Dam Breach Modeling, Tony L. Wahl, Blake Armstrong

Protections Conference

The submerged jet erosion test (JET) is one of several methods available for quantifying erodibility of cohesive soils, a crucial input for modeling erosion and breach of embankment dams with models such as WinDAM, EMBREA (Morris 2011), and DL BREACH (Wu 2013; 2016a; 2016b). The JET was initially developed in the late 1980s as a relatively large-scale device with a 13-mm diameter nozzle creating an impinging jet that erodes a soil sample submerged in a 61-cm diameter tank. This first device was documented in an ASTM standard (D5852-1995), but the standard was withdrawn in 2016. In the last 15 to …

Changes In Obstacles To Learning During The Covid-19 Pandemic For University Students And Recommended Solutions, Becky Williams, Sunshine L. Brosi

Journal on Empowering Teaching Excellence

Access the online Pressbooks version of this article here.

The COVID-19 pandemic caused disruptions to student learning from K–12 to universities and continues to manifest negative effects on students. To better understand the challenges our students face and how those obstacles have changed since the COVID-19 pandemic began, we surveyed our undergraduate ecology students who ranked obstacles to learning they experience in technology, learning environment, and economic security. The majority of respondents report conditions have worsened since the onset of the pandemic. Surveys identified the largest challenges on average were being unfamiliar with technology, using a smartphone or tablet for …

Examining Math Instructors’ Knowledge, Beliefs, And Attitudes Of Student Learning Strategies In A Faculty Development Workshop, Roxanne Brinkerhoff, Becky Connelly, Sam Gedeborg

Journal on Empowering Teaching Excellence

Access the online Pressbooks version of this article here.

A faculty development workshop, focused on incorporating universal learning strategies into developmental mathematics courses, was created and utilized in a developmental mathematics department at an open-enrollment, mid-western university to ascertain the best methods for dissemination of essential learning strategies to developmental math students. Successful faculty development programs were studied and utilized in the design of the workshop. The attributes of the workshop were discussed. Faculty were surveyed and qualitative data was analyzed to determine the workshop’s efficacy. The research aimed to understand if participation in the workshop changed faculty knowledge, beliefs, …

Portal: Portal Widget For Remote Target Acquisition And Control In Immersive Virtual Environments, Donguyn Han, Donghoon Kim, Isaac Cho

Computer Science Student Research

This paper introduces PORTAL (POrtal widget for Remote Target Acquisition and controL) that allows the user to interact with out-of-reach objects in a virtual environment. We describe the PORTAL interaction technique for placing a portal widget and interacting with target objects through the portal. We conduct two formal user studies to evaluate PORTAL for selection and manipulation functionalities. The results show PORTAL supports participants to interact with remote objects successfully and precisely. Following that, we discuss its potential and limitations, and future works.

Understanding The Behavior, Challenges, And Privacy Risks In Digital Technology Use By Nursing Professionals, Ankit Shrestha, Danielle M. Graham, Prakriti Dumaru, Rizu Paudel, Kristin A. Searle, Mahdi Nasrullah Al-Ameen

Computer Science Student Research

With the growing adoption of digital technology in healthcare organizations, it is important to understand nursing professionals’ behavior and challenges, and the corresponding privacy implications around digital technology use. To this end, we conducted semi-structured interviews with 21 participants (16 nursing professionals, and five nursing faculties) in the USA. In our study with nursing professionals, we explored how they used digital technology and protected sensitive health data at their workplace. We investigated their understanding of privacy breaches and possible consequences, the challenges they encountered to maintaining privacy, and their workarounds to deal with such issues. We looked into the support …

Educational Policies Committee, Minutes, November 3, 2022, Utah State University

Educational Policies Committee

• Approval of Minutes - October 6, 2022
• Subcommittee Reports
• Curriculum Subcommittee (Chad Simon)
• Academic Standards Subcommittee (Renee Galliher)
• General Education Subcommittee (Matt Sanders)
• Other Business
• Adjourn: 3:50 pm

Faculty Senate Executive Committee Meeting, Agenda, November 14, 2022, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Call to Order
  Approval of Minutes – October 17, 2022
• University Business
• Information
  Educational Policies Committee – November 3, 2022
• Reports
  Faculty Evaluation Committee Annual Report
  USUSA Annual Report
  Honors Annual Report
• Old Business
• New Business
  Office of Equity Additional Training
  Code 404 Faculty Appointments Track Changes | Final Clean

Inertial Motion On The Earth's Spheroidal Surface, Boyd F. Edwards, Cade Pankey, John M. Edwards

All Physics Faculty Publications

As seen by an observer in the rotating frame, the earth’s small spheroidal deformations neutralize the centrifugal force, leaving only the smaller Coriolis force to govern the “inertial” motion of objects that move on its surface, assumed smooth and frictionless. Previous studies of inertial motion employ weakly spheroidal equations of motion that ignore the influence of the centrifugal force and yet treat the earth as a sphere. The latitude dependence of these equations renders them strongly nonlinear. We derive and justify these equations and use them to identify, classify, name, describe, and illustrate all possible classes of inertial motion, including …

Curriculum Subcommittee, Minutes, November 3, 2022, Utah State University

Educational Policies Committee

• Approval of Minutes - October 6, 2022
• Program Proposals
• Semester Course Approval Reviews
• Other Business
• Adjourn: 3:00 pm

Rural Teacher Attitudes And Engagement With Computing And Technology, Melissa P. Mendenhall, Colby Tofel-Grehl, David Feldon

Teacher Education and Leadership Faculty Publications

The purpose of this sequential Case Study-Mixed Methods research is to explore rural teacher attitudes toward, approaches to, and engagement with making and computational thinking during STEM professional development and co-teaching learning experiences. Specifically, we examine the professional learning needs of two rural, middle school teachers as they engage technology. Using the lens of cultural historical activity theory, this paper examines the ways in which teacher attitude about computing shifted throughout professional learning and instructional practice. Findings show three broad themes that emerge surrounding teacher attitudes, approaches, and engagement with technology: Anxiety, Independent Learner, and Integration. Additionally, findings suggest that …

Effects Of Volatile Compounds On Breakdown Field Strength Measurements Of Polymers, Megan Loveland Dewaal, Jr Dennison

Journal Articles

This study investigates the effects of absorbed water and volatile compounds on measurements of the electrostatic breakdown field strength. Comparisons are made between sets of pristine samples, ones that underwent a thorough vacuum bake out, and ones subsequently exposed to humid conditions to determine how quickly the samples reverted to an unbaked state. Specifically, we compared signatures related to an electrostatic breakdown (electrostatic breakdown field strength, frequency of pre-breakdown arcing, and flashover) and images of the arc damage sites. The work reports results for three prototypical polymeric dielectric materials: low density polyethylene (LDPE), polyether-etherketone (PEEK), and Nylon 66, listed in …

Utah Growing Water Smart: The Water-Land Use Integration Guidebook, Kelly Kopp, Joanna Endter-Wada

Utah Growing Water Smart

The Utah Growing Water Smart workshops bring together teams of key community staff and water and land use planning decision makers to help build a more resilient and sustainable water future. The workshops use a range of public engagement, planning, communication, and policy implementation tools to help community teams realize their water efficiency, smart growth, watershed health, and water resiliency goals.

This 1^st edition of the Utah Growing Water Smart curriculum guidebook was prepared for the inaugural Utah workshop focused on Wasatch Front communities and held at the Wheeler Historical Farm in Murray, Utah on November 15-17, 2022. This …

Educational Policies Committee, Agenda, November 3, 2022, Utah State University

Educational Policies Committee

• Approval of Minutes - October 6, 2022
• Subcommittee Reports
• Curriculum Subcommittee (Chad Simon)
• Academic Standards Subcommittee (Renee Galliher)
• General Education Subcommittee (Matt Sanders)
• Other Business
• Adjourn

Round Robin Tests Of Electron Irradiated Polymers Via Pulsed Electroacoustic Measurements, Zachary Gibson, J. R. Dennison, Virginie Griseri

Physics Student Research

Charge accumulation and migration can be studied using the pulsed electroacoustic (PEA) method to directly measure internal charge distributions in dielectric materials. This study aims to compare measurements using PEA systems constructed in labs at Utah State University and Université Paul Sabatier to establish confidence in comparing PEA results between different PEA systems. While there is good agreement in data measured for pristine samples with DC bias applied and no charge embedded, there are discrepancies in the data when measuring irradiated samples with embedded charge. The overall characteristics of charge distributions measured with both systems is clearly the same, but …

Curriculum Subcommittee Agenda, November 3, 2022, Utah State University

Educational Policies Committee

• Approval of Minutes - October 6, 2022
• Program Proposals
• Semester Course Approval Reviews
• Other Business
• Adjourn: 3:00 pm

River Aggradation-Degradation Under Sand Mining: Experimental And Numerical Studies, Nejib H. Abdullahi, Zulfequar Ahmad

International Symposium on Hydraulic Structures

Sand mining from the river for different purposes is a common cause of the failure of hydraulic structures. Its presence in a river causes intense bedload transport, which is crucial for designing and operating hydraulic structures. The flow characteristics and aggradation-degradation phenomenon in the vicinity of the sand mining pit have been analyzed with experimental and numerical approaches. The bed level evolution in the vicinity of the pit was measured using a pointer gauge for different temporal and equilibrium stage conditions. A numerical simulation was done using a three-dimensional computational fluid dynamics model, Flow-3D, which was used to compute the …

Experimental Study On Three-Dimensional Velocity Near Piano Key Weirs, Binit Kumar, Zulfequar Ahmad

International Symposium on Hydraulic Structures

A Piano key weir (PK weir) is a non-rectilinear spillway commonly used to augment the discharge capacity at the dams and diversion structures. Installation of such hydraulic structures may alter the flow characteristics, sediments transport and sedimentation in the river channels. The present study deals with an experimental investigation of three dimensional velocities near the two different laboratory models of PK weir having noses with an outlet overhangs. The purpose of this study is to observe the flow field in the vicinity of a one-cycle and two-cycle PK weir to understand the flow behavior of the weir that may be …

Laws Of Turbulence And The Estimation Of Turbulent Kinetic Energy Budget For Flow Through A Degraded Channel-Bed, Mosedul Sarkar, Sankar Sarkar

International Symposium on Hydraulic Structures

This present study focuses on the laws of turbulence and estimation of the turbulent kinetic energy (TKE) budget for flow over a bimodal degraded bed under equilibrium conditions. The analyses of turbulence were performed based on the three-dimensional velocity data captured by using a Vectrino velocimeter. The streamwise velocity and Reynolds shear stress profiles show an excellent agreement with the existing literature. In view of the advancement in the direction of bed degradation, the measured velocity data captured at different streamwise locations (before, on and after the maximum equilibrium depth of degradation) were further processed to explore the scaling laws …

Numerical Modelling Of Scour And Flow Field For Two Different Arrangements Of Piers Using Ssiim Model, Sushant Kumar Biswal, Animesh Das

International Symposium on Hydraulic Structures

In this work, a numerical model Sediment Simulation In Intakes with Multiblock option (SSIIM) is developed to analyse the effect of pier spacing on the scour process around side by side and staggered piers. Both �� − �� and �� − �� turbulence models are employed to solve the eddy viscosity flow equations and their performances are evaluated. From the initial observations it is concluded that, when the spacing between the piers is negligible, then both the piers behave like a single pier and the scour depth is found to be more than 42% than that of a single pier. …