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Life After Death: A Field Experiment With Small Businesses On Information Frictions, Stigma, And Bankruptcy, Shai Bernstein, Emanuele Colonnelli, Mitchell Hoffman Jan 2023

Life After Death: A Field Experiment With Small Businesses On Information Frictions, Stigma, And Bankruptcy, Shai Bernstein, Emanuele Colonnelli, Mitchell Hoffman

Faculty Publications

In an RCT with US small businesses, we document that a large share of firms are not well-informed about bankruptcy. Many assume that bankruptcy necessarily entails the death of a business and do not know about Chapter 11, where debts are renegotiated so that the business can continue operating. Firms also exhibit bankruptcy-related stigma, believing that bankruptcy is embarrassing, a sign of failure, and a negative signal to employees and customers. Short educational videos that address information or stigma increase knowledge and decrease stigma, both immediately and durably over 4 months. Videos increase reported interest in using Chapter 11 bankruptcy …


Barriers To A Cybersecurity Career: Analysis Across Career Stage And Gender, Justin Scott Giboney, Bonnie Brinton Anderson, Geoffrey A. Wright, Shayna Oh, Quincy Taylor, Megan Warren, Kylie Johnson Jan 2023

Barriers To A Cybersecurity Career: Analysis Across Career Stage And Gender, Justin Scott Giboney, Bonnie Brinton Anderson, Geoffrey A. Wright, Shayna Oh, Quincy Taylor, Megan Warren, Kylie Johnson

Faculty Publications

The demand for cybersecurity professionals is high—especially for women. Efforts to attract women to cybersecurity careers are not meeting goals of equal representation. Researchers have not yet identified a theoretical rationale for the differences. To provide a theoretical rationale, we investigate barriers to a cybersecurity career based on career stages defined by Super (1957) and gender. Concerns about a cybersecurity career differ between girls, young adult women, and mid-career women. Girls feel an un- awareness of opportunity and requisite training, whereas adult women are concerned that they will be undervalued in a male-dominated field, and mid-career women are concerned about …


Speed-Accuracy Tradeoffs In Decision Making: Perception Shifts And Goal Activation Bias Decision Thresholds, Jeff Larson, Guy Hawkins Jan 2023

Speed-Accuracy Tradeoffs In Decision Making: Perception Shifts And Goal Activation Bias Decision Thresholds, Jeff Larson, Guy Hawkins

Faculty Publications

A fundamental aspect of decision making is the speed-accuracy tradeoff (SAT): slower decisions tend to be more accurate, but because time is a scarce resource people prefer to conclude decisions more quickly. The current research adds to the SAT literature by documenting two previously unrecognized influences on the SAT: perception shifts and goal activation. Decision makers’ perceptions of what constitutes a fast or a slow decision, and what constitutes an accurate or inaccurate decision, are based on prior experience, and these perceptions influence decision speed. Similarly, previous experience in a decision context associates the context with a particular decision goal. …


A Multi-Measure Approach For Lexical Diversity In Writing Assessments: Considerations In Measurement And Timing, Kelly Woods, Brett James Hashimoto, Earl K. Brown Jan 2023

A Multi-Measure Approach For Lexical Diversity In Writing Assessments: Considerations In Measurement And Timing, Kelly Woods, Brett James Hashimoto, Earl K. Brown

Faculty Publications

Several researchers (e.g., Gebril & Plakans, 2016; Crossley & McNamara, 2012) have noted a relationship between lexical diversity (LD) and writing proficiency. Previous research has indicated that typical LD measures can account for as much as 44 % of variability in writing proficiency (Crossley et al., 2011). However, it remains unclear which of the numerous LD measures (or combination of measures) that exist best predict writing proficiency (e.g., McCarthy & Jarvis, 2010). The present study addresses these issues using scored writing assessment samples from 911 ESL students. LD was assessed with a battery of ten measures through the Python lexical-diversity …


Coaching To Support Blended Teaching: A Phenomenological Study Of The Coaching Experiences Of Emerging K–12 Blended Teacher, Michelle Jensen, Charles R. Graham Jan 2023

Coaching To Support Blended Teaching: A Phenomenological Study Of The Coaching Experiences Of Emerging K–12 Blended Teacher, Michelle Jensen, Charles R. Graham

Faculty Publications

With the growth of blended teaching comes a need to support teachers that are shifting their instruction to this mode of teaching. Coaching is a form of professional development that is growing in K–12 institutions. However, research of coaching specifically intended to support blended teaching practices is lacking. This phenomenological qualitative study seeks to contribute to the body of research by exploring the coaching experiences of four K–12 teachers from second, fifth, junior high, and high school that are new to blended teaching. Through semi-structured interviews we sought to understand how our participants were experiencing the support for blended teaching …


Ethnic Minority Analysts’ Participation In Public Earnings Conference Calls, Rachel W. Flam, Jeremiah Green, Joshua A. Lee, Nathan Y. Sharp Jan 2023

Ethnic Minority Analysts’ Participation In Public Earnings Conference Calls, Rachel W. Flam, Jeremiah Green, Joshua A. Lee, Nathan Y. Sharp

Faculty Publications

We investigate ethnic minority and non-minority sell-side analysts’ participation in public earnings conference calls. We find that minority analysts are underrepresented in conference call Q&A sessions, and minority analysts who do participate on the calls experience lower levels of prioritization than do nonminority analysts. Minority analysts’ lower participation rates are partially but not fully mediated by characteristics such as experience, work environment, and stock rating favorability. Additionally, firm and conference call fixed effects mediate approximately half the magnitude of lower minority participation rates. Extroverted minority analysts participate at higher rates, but the negative association between minority status and conference call …


Managers’ Use Of Humor On Public Earnings Conference Calls, Andrew C. Call, Rachel W> Flam, Joshua A. Lee, Nathan Y. Sharp Jan 2023

Managers’ Use Of Humor On Public Earnings Conference Calls, Andrew C. Call, Rachel W> Flam, Joshua A. Lee, Nathan Y. Sharp

Faculty Publications

Despite the prevalence and importance of humor in interpersonal communication, the disclosure literature is silent on the use of humor in the context of corporate communication. Using a sophisticated machine learning algorithm, we identify managers’ successful uses of humor during public earnings conference calls. When managers use humor on an earnings call, stock market returns and analyst forecast revisions following the call are more positive, primarily because of a muted response to negative earnings news. Consistent with managers’ successful use of humor being a favorable signal of future firm performance, we find no evidence of a return reversal over the …


Innovations In Ipo Deal Structure: Do Up-C Ipos Harm Public Shareholders?, Mary Brooke Billings, Kevin Hsueh, Melissa F. Lewis-Western, Gladriel Shobe Jan 2023

Innovations In Ipo Deal Structure: Do Up-C Ipos Harm Public Shareholders?, Mary Brooke Billings, Kevin Hsueh, Melissa F. Lewis-Western, Gladriel Shobe

Faculty Publications

This paper examines an innovation in capital formation that has spurred contentious debate: the Umbrella Partnership Corporation (“Up-C”) IPO. Advisors and underwriters argue that the Up-C deal structure is a driver of post-IPO value and, thus, is a value-enhancing means of raising capital that may be one solution to concerns regarding the drop in the number of publicly traded companies. Consistent with these claims, recent research suggests that organizing soon-to-be public businesses as pass-through entities (as is the case for Up-Cs) leads to superior future performance. Yet, broadening the analysis to consider abnormal stock performance and post-IPO litigation of a …


A Preliminary Investigation Of A Brief Tier 1 Classroom Management Measure, Allison F. Gilmour, Joseph H. Wehby, Jessica Boyle, Howard P. Wills, Paul Caldarella Jan 2023

A Preliminary Investigation Of A Brief Tier 1 Classroom Management Measure, Allison F. Gilmour, Joseph H. Wehby, Jessica Boyle, Howard P. Wills, Paul Caldarella

Faculty Publications

Multitiered systems for supporting students’ behavior in schools rely on teachers using generally effective classroom management strategies, such as Tier 1 practices. However, few tools exist to easily assess classwide Tier 1 practices. In this brief report, we describe one potential tool, the Classroom Atmosphere Rating Scale–Brief (CARS-B) and assess the properties of the tool using item response theory and multilevel models. We found that most items on the CARS-B had acceptable discriminations and difficulty estimates. Teachers’ CARS-B latent scores were positively associated with student group on-task. We discuss potential changes to the CARS-B and its use in research and …


The Gatekeeper’S Dilemma: 'When Should I Transfer This Customer?', Brett A. Hathaway, Evgeny Kagan, Maqbool Dada Jan 2023

The Gatekeeper’S Dilemma: 'When Should I Transfer This Customer?', Brett A. Hathaway, Evgeny Kagan, Maqbool Dada

Faculty Publications

In many service encounters, front-line workers (often referred to as gatekeepers) have the discretion to attempt to resolve a customer request or to transfer the customer to an expert service provider. Motivated by an incentive redesign at a call center of a mid-size US-based bank, we formulate and solve an analytical model of the gatekeeper's transfer response to different incentive schemes and to different congestion levels. We then test several model predictions experimentally. Our experiments show that human behavior matches the predictions qualitatively, but not always in magnitude. Specifically, transfer rates are disproportionately low in the presence of monetary penalties …


Corpus Of Founding Era American English: Designing A Corpus For Interpreting The United States Constitution, Brett James Hashimoto Jan 2023

Corpus Of Founding Era American English: Designing A Corpus For Interpreting The United States Constitution, Brett James Hashimoto

Faculty Publications

The original meaning of words or phrases is often in dispute in Founding Era legislation, especially the US Constitution. The Corpus of Founding Era American English (COFEA) accurately provides evidence for the meaning of contested terms during the Founding Era. COFEA consists of 126,394 texts and over 136 million words. This corpus has been and is being used by legal researchers and interpreters in scholarly research as well as various courts, including the Supreme Court. This paper describes the motivation for the creation of COFEA and describes the process of designing and collecting the corpus.


Does Text Entry Method Make A Difference On Chinese Writing Test Scores?, Dana Scott Bourgerie, Troy L. Cox, Steven L. Riep Jan 2023

Does Text Entry Method Make A Difference On Chinese Writing Test Scores?, Dana Scott Bourgerie, Troy L. Cox, Steven L. Riep

Faculty Publications

Should the writing construct be assessed through handwriting or keyboarding? As the only major language entirely without a syllabary or alphabet, the Chinese writing system is unique among modern languages, thus the question of writing proficiency is complicated by character recall. Most of the testing research comparing text entry methods has been conducted in English and has found that keyboarding and handwriting can be used interchangeably. This paper reports the outcome of a study comparing the results of handwritten and typed versions of the Chinese ACTFL Writing Proficiency Test (WPT). L2 Chinese students (n=25) with Intermediate to Superior speaking skills …


Boomer Peak Or Gen X Cliff? From Svs To Lbms In Georgia English, Margaret E. L. Renwick, Joseph A. Stanley, Jon Forrest, Lelia Glass Jan 2023

Boomer Peak Or Gen X Cliff? From Svs To Lbms In Georgia English, Margaret E. L. Renwick, Joseph A. Stanley, Jon Forrest, Lelia Glass

Faculty Publications

The late twentieth century in the United States marks the decline of regional vowel systems like the Northern Cities Shift and the Southern Vowel Shift, replaced by supralocal systems like the Low-Back-Merger Shift.We chart such change in acoustic data from seven generations of White speakers (n = 135) in the Southeastern state of Georgia. We analyze front vowels affected by both the SVS and LBMS (DRESS, TRAP), plus PRICE and FACE, known respectively to monophthongize and centralize in the SVS, and LBMS-implicated LOT/ THOUGHT. The SVS is most advanced among Georgians born in the mid-twentieth century, particularly in FACE-centralization. In …


Sample Size Matters In Calculating Pillai Scores, Joseph A. Stanley, Betsy Sneller Jan 2023

Sample Size Matters In Calculating Pillai Scores, Joseph A. Stanley, Betsy Sneller

Faculty Publications

Since their introduction to sociolinguistics by Hay, Warren, and Drager [(2006). J. Phon. (Modell. Sociophon. Var.) 34(4), 458–484], Pillai scores have become a standard metric for quantifying vowel overlap. However, there is no established threshold value for determining whether two vowels are merged, leading to conflicting ad hoc measures. Furthermore, as a parametric measure, Pillai scores are sensitive to sample size. In this paper, we use generated data from a simulated pair of underlyingly merged vowels to demonstrate (1) larger sample sizes yield reliably more accurate Pillai scores, (2) unequal group sizes across the two vowel classes are irrelevant in …


Utahns Sound Utahn When They Avoid Sounding Utahn, Joseph A. Stanley Jan 2023

Utahns Sound Utahn When They Avoid Sounding Utahn, Joseph A. Stanley

Faculty Publications

Today’s sociolinguistic variable: realization of post-tonic, unstressed /tən/ – e.g. mountain, button, kitten, satin – Hereafter, a Wellsesque inspirated label: MOUNTAIN – Three main variants:

1. [tʰɨn] • aspirated alveolar stop + reduced vowel + nasal • AmE citation form, formal, careful • Probably accessible by most speakers.

2. [ʔn̩] • glottal stop + syllabic nasal • AmE standard, casual, typical. • The most common for probably all speakers.

3. [ʔɨn] • glottal stop + reduced vowel + nasal • Non-mainstream: found in Utah, New York, and scattered elsewhere (Roberts 2006, Freeman et al. 2012, Eddington & Brown 2021, Davidson …


The Missionary Voice: Perceptions Of An Emerging Register, Josh Stevenson, Joseph A. Stanley, Wendy Baker-Smemoe Jan 2023

The Missionary Voice: Perceptions Of An Emerging Register, Josh Stevenson, Joseph A. Stanley, Wendy Baker-Smemoe

Faculty Publications

Today’s presentation is on a particular way of speaking among certain members of the Church of Jesus Christ of Latter-day Saints. Specifically, today I’ll be telling you about Latter-day Saint missionaries, who you may encountered before. Let’s set aside any preconceived notions you may have about missionaries or their faith and explore what appears to be an emerging missionary-based register.

In essence, missionaries are Latter-day Saint volunteers who dedicate 18 months to two years to tell others about their faith. They’re assigned around the world and often have to learn a new language, are typically college-aged, and adhere to strict …


Are We Essential, Or Sacrificial? The Effects Of Felt Public Gratitude On Essential Worker Recovery Activities During Covid-19, Hee Young Kim, Sijun Kim, Taeya M. Howell, Sarah P. Doyle, Nathan C. Pettit, Michael Bizzarro Jan 2023

Are We Essential, Or Sacrificial? The Effects Of Felt Public Gratitude On Essential Worker Recovery Activities During Covid-19, Hee Young Kim, Sijun Kim, Taeya M. Howell, Sarah P. Doyle, Nathan C. Pettit, Michael Bizzarro

Faculty Publications

COVID-19 has been characterized by unprecedented levels of public gratitude to some, but not all, essential workers. In this research, we integrate insights from the stigmatized occupations and gratitude literature to build theory on the positive and negative relationships between such displays of public gratitude and essential workers’ recovery activities. We argue that felt public gratitude positively relates to adaptive recovery activities (e.g., exercise) and negatively relates to maladaptive recovery activities (e.g., overdrinking). We further explain how felt public gratitude impacts (mal)adaptive recovery activities through (a) felt invisibility and (b) negative/positive affect. We find support for our predictions in a …


Physical Habitat Complexity Partially Offsets The Negative Effect Of Brook Trout On Yellowstone Cutthroat Trout In The Peripheral Goose Creek Subbasin, Daniel C. Dauwalter, Michael A. Baker, Sarah M. Baker, Richard Lee, John D. Walrath Dec 2022

Physical Habitat Complexity Partially Offsets The Negative Effect Of Brook Trout On Yellowstone Cutthroat Trout In The Peripheral Goose Creek Subbasin, Daniel C. Dauwalter, Michael A. Baker, Sarah M. Baker, Richard Lee, John D. Walrath

Western North American Naturalist

Nonnative Brook Trout Salvelinus fontinalis often reduce the long-term persistence of native Cutthroat Trout Oncorhynchus clarkii populations in the western United States. However, there are some instances where the 2 species have co-occurred for decades, and healthy and diverse stream habitat conditions have been suggested to facilitate sympatry. Our goal was to evaluate how habitat diversity may interplay in the negative interactions between Brook Trout and Yellowstone Cutthroat Trout O. c. bouvieri in the Goose Creek subbasin in the western United States. We determined that neither species was abundant when they occurred in sympatry. Yellowstone Cutthroat Trout were present at …


Effects Of Beaver Dams On Stream And Riparian Conditions On Public Lands In The United States’ Inland Northwest, Brett B. Roper Dec 2022

Effects Of Beaver Dams On Stream And Riparian Conditions On Public Lands In The United States’ Inland Northwest, Brett B. Roper

Western North American Naturalist

A before-after control-impact (BACI) design was used to simultaneously evaluate how stream habitat, macroinvertebrate communities, stream temperatures, and riparian conditions responded to beavers building dams within a stream reach. Summarized conditions describing beaver-dammed and undammed stream reaches suggested that 13 of the 18 evaluated metrics differed. After accounting for beavers’ selection of lower-gradient stream reaches with less forested cover, the number of stream and riparian metrics that differed significantly dropped to 5. Beaver dams increased pool area and depth, despite failing to increase the frequency of wood >10 cm in diameter. This suggests that beavers build dams utilizing pieces of …


Short-Range Magnetic Correlations, Spontaneous Magnetovolume Effect, And Local Distortion In Magnetic Semiconductor Mnte, Raju Baral Dec 2022

Short-Range Magnetic Correlations, Spontaneous Magnetovolume Effect, And Local Distortion In Magnetic Semiconductor Mnte, Raju Baral

Theses and Dissertations

The antiferromagnetic semiconductor MnTe has recently attracted significant interest as a potential high-performance thermoelectric material. Its promising thermoelectric properties are due in large part to short-range magnetic correlations in the paramagnetic state, which enhance the thermopower through the paramagnon drag effect. Using magnetic pair distribution function (mPDF) analysis of neutron total scattering data, we present a detailed, real-space picture of the short-range magnetic correlation in MnTe, offering a deeper view into the paramagnon drag effect and the nature of the correlated paramagnetic state. We confirm the presence of nanometer-scale antiferromagnetic correlations far into the paramagnetic state, show the evolution of …


Going Cold Turkey? Changes To Faunal Subsistence In The Northern San Juan Region From Basketmaker Ii Through Pueblo Iii, Tenaya Gatrell-Bedard Dec 2022

Going Cold Turkey? Changes To Faunal Subsistence In The Northern San Juan Region From Basketmaker Ii Through Pueblo Iii, Tenaya Gatrell-Bedard

Theses and Dissertations

Previous research in the Northern San Juan Region of the American Southwest has revealed a pattern of change in subsistence patterns from the Basketmaker II through Pueblo III periods. Jonathan C. Driver describes the pattern as: cottontail in Basketmaker III (500 to 750 CE) and Pueblo I (750 to 900 CE), deer in Pueblo II (900 to 1150 CE), and turkey in Pueblo III (1150 to 1350 CE). The transition from deer to turkey as the main subsistence has been recorded at several sites throughout the Northern San Juan Region and is thought to be caused by the overhunting of …


Variation In The M-Opioid Receptor (Oprm1) And Offspring Sex Are Associated With Maternal Behavior In Rhesus Macaques (Macaca Mulatta), Zachary Baron Dec 2022

Variation In The M-Opioid Receptor (Oprm1) And Offspring Sex Are Associated With Maternal Behavior In Rhesus Macaques (Macaca Mulatta), Zachary Baron

Theses and Dissertations

A m-opioid receptor (OPRM1) single-nucleotide-polymorphism, found in both humans and rhesus macaques mediates the mother-infant attachment bond. Because mothers treat their sons and daughters differently, it is somewhat surprising that the role of infant sex has not been assessed in the context of a maternal-OPRM1-genotype-by-infant-sex interaction. The present study investigates the effect of maternal-OPRM1-genotype and infant sex on mother-infant behaviors. Over the first six months of offspring life, mother-infant behavioral data assessing attachment quality was collected twice weekly from a large number of rhesus monkey mother-infant pairs (N=161 dyads; n=64 female infants, n=97 male infants). Mothers were genotyped for OPRM1 …


Quantifying Volatile Fatty Acid Concentrations During The Pretreatment And Anaerobic Digestion Process, Sascha Boutelle Dec 2022

Quantifying Volatile Fatty Acid Concentrations During The Pretreatment And Anaerobic Digestion Process, Sascha Boutelle

Theses and Dissertations

Producing renewable energy from biomass or from the wastewater treatment process has gained momentum in the past 20 years. Anaerobic digestion has historically been used as one step in the waste treatment process, to both reduce the mass of waste that needs to be disposed of and to generate biogas. This process is typically only able to reduce 30-40% of the waste mass because of the recalcitrant nature of the waste streams being treated. Anaerobic pretreatment with the thermophilic bacteria Caldicellulosiruptor bescii (C. bescii) has been proven to increase the percentage of mass digested and consequently increase methane production to …


Understanding The Ahupua'a: Using Remote Sensing To Measure Upland Erosion And Evaluate Coral Reef Structure, Logan Kalaiwaipono Ellis Dec 2022

Understanding The Ahupua'a: Using Remote Sensing To Measure Upland Erosion And Evaluate Coral Reef Structure, Logan Kalaiwaipono Ellis

Theses and Dissertations

Under ever intensifying pressures from land use, climate change, and erosion, tropical islands are among the most vulnerable systems in the world. Terrestrial systems are weakened by intensifying land use patterns, the weakening of which is highlighted when high intensity rainfall events erode sediment and leads to sediment deposition on the marine system. The deposition of sediment on the marine system is a major stressor that can lead to weakened coral reefs and a decrease in marine resources commonly gathered for food. These interactions have led to the emergence of biocultural resource management strategies, one of which is the ahupua'a …


Leveraging Fpga Primitives To Improve Word Reconstruction During Netlist Reverse Engineering, Reilly Mckendrick, Corey Simpson, Brent Nelson, Jeffrey Goeders Dec 2022

Leveraging Fpga Primitives To Improve Word Reconstruction During Netlist Reverse Engineering, Reilly Mckendrick, Corey Simpson, Brent Nelson, Jeffrey Goeders

Faculty Publications

While attempting to perform hardware trojan detection, or other low-level design analyses, it is often necessary to inspect and understand the gate-level netlist of an implemented hardware design. Unfortunately this process is challenging, as at the physical level, the design does not contain any hierarchy, net names, or word groupings. Previous work has shown how gate-level netlists can be analyzed to restore high-level circuit structures, including reconstructing multi-bit signals, which aids a user in understanding the behavior of the design. In this work we explore improvements to the word reconstruction process, specific to FPGA platforms. We demonstrate how hard-block primitives …


Interpretive Language And Museum Artwork: How Patrons Respond To Depictions Of Native American And White Settler Encounters--A Thematic Analysis, Holli D. Rogerson Dec 2022

Interpretive Language And Museum Artwork: How Patrons Respond To Depictions Of Native American And White Settler Encounters--A Thematic Analysis, Holli D. Rogerson

Theses and Dissertations

The purpose of this study is to conduct a thematic linguistic analysis of survey responses to museum-quality images depicting various Native American and white settler encounters. The survey asked participants to provide written responses (fill in the blank prompts) to a selection of twelve images composed of photographs and paintings representing one or more of three overarching themes: violence, immersion, and goodwill/collaboration. The research focused on four demographic groups: Latter-day Saints, Native Americans, museum employees, and total participants. Each response was individually analyzed by hand and assigned appropriate classification tags based on the types of words their responses contained including …


Analyzing Patterns Of Complexity In Pre-University L2 English Writing, Zachary M. Lambert Dec 2022

Analyzing Patterns Of Complexity In Pre-University L2 English Writing, Zachary M. Lambert

Theses and Dissertations

The present study involves the creation and analysis of a corpus containing 7747 samples of timed, pre-matriculated L2 English writing from an IEP. The focus of the analysis is on three phrasal complexity measures with time and proficiency as fixed effects, examining their impact on each measure. Results of the analysis suggest that this is true for some phrasal measures, such as nominalizations and attributive adjectives, while others, such as noun-noun phrases, may indicate a lower level of proficiency or lesser allotted writing time. Nominalizations in particular demonstrated a strong relationship with both allotted time and proficiency, further suggesting that …


A Usability Study Of Fido2 Hardware Tokens On Mobile Devices, Stephen Lambert Dec 2022

A Usability Study Of Fido2 Hardware Tokens On Mobile Devices, Stephen Lambert

Theses and Dissertations

Passwords as the primary form of authentication on the web have many issues, such as password re-use across sites and difficulty in remembering secure passwords. The FIDO Alliance has created a passwordless system that has with support from companies like Google, Apple, and Microsoft: FIDO2. Studies have shown so far that users find FIDO2 usable on personal computers, but no work has been published on its usability on mobile devices. I conducted a lab study in which participants used FIDO2 passwordless authentication with hardware tokens on a mobile phone. Participants found FIDO2 usable on mobile devices, but had similar fears …


Effect Of Climate History On The Genetic Structure Of An Antarctic Soil Nematode, Abigail C. Jackson Dec 2022

Effect Of Climate History On The Genetic Structure Of An Antarctic Soil Nematode, Abigail C. Jackson

Theses and Dissertations

Historical climate disturbances such as glacial cycling and fluctuating stream, lake, and sea levels strongly influence the distribution and evolutionary trajectories of Antarctic terrestrial species. Antarctic invertebrates, with limited long-range mobility, including the ubiquitous sentinel nematode species Scottnema lindsayae, are especially sensitive to climate disturbances. We tested hypotheses associated with the historical geographic and population genetic structure of this species as it occurs across the McMurdo Dry Valleys (MDVs) of Antarctica. In order to reconstruct the influence of climate disturbance and ecological conditions on this species, partial mitochondrial COI gene sequences were sequenced and analyzed from individual S. lindsayae collected …


Computational Tools For Modeling And Simulation Of Sooting Turbulent Non-Premixed Flames, Victoria B. Stephens Dec 2022

Computational Tools For Modeling And Simulation Of Sooting Turbulent Non-Premixed Flames, Victoria B. Stephens

Theses and Dissertations

Turbulent combustion systems are physically complex processes that involve many interdependent phenomena---including turbulent fluid dynamics, multi-component mass transfer, convective and radiative heat transfer, and multiphase flow---that occur over a wide range of length and time scales. Modeling and simulation studies complement experimental work by implementing and validating models and providing predictive capabilities, but current software tools are often limited by a lack of standardization and best practices, non-robust implementation, or over-specialization. Some topics in combustion CFD research, notably radiative heat transfer and soot modeling, are critically underrepresented in simulation studies as a result of software limitations. This project establishes and …