Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Brigham Young University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1711 - 1740 of 9765

Full-Text Articles in Entire DC Network

A Rapid Spectrophotometric Assay For Quantifying Seed Coat Saponins In Quinoa, Sydney Diver Szabo Dec 2020

A Rapid Spectrophotometric Assay For Quantifying Seed Coat Saponins In Quinoa, Sydney Diver Szabo

Theses and Dissertations

Background and objectives: The commonly used afrosimetric foam-height method for quantifying saponins in quinoa is rapid but imprecise. A rapid UV/Vis method, utilizing the Liebermann-Burchard (LB) color reaction, was compared to the foam method across a range of saponin levels in washed and unwashed seed. Findings: A 6 min UV/Vis method provided greater precision and accuracy than the afrosimetric method at the lower saponin levels found in washed quinoa. The afrosimetric method did not differentiate saponin levels below 0.6 mg/mL but allows for useful relative comparisons of saponin content in unwashed quinoa where the foam height is large. Conclusions: The …


Translating Greek Mythology In Contemporary Chinese Science Fiction, Emily Olive Moore Dec 2020

Translating Greek Mythology In Contemporary Chinese Science Fiction, Emily Olive Moore

Theses and Dissertations

Given its early connection to western science fiction, it is not entirely surprising that contemporary Chinese science fiction (csf) frequently references the "west" in general and Greek mythology in particular. The three works that I analyze in this paper are Xia Jia's "Psychology Game," Gu Shi's "Chimera," and Egoyan Zheng's The Dream Devourer. These three texts utilize Greek mythology in different ways, to different degrees, and with different purposes, and yet they all use Greek mythology to visually disrupt their respective texts. Xia Jia ends "Psychology Game" with a direct Greek-language quotation. Throughout "Chimera," Gu Shi quotes Chinese translations of …


Metalearning By Exploiting Granular Machine Learning Pipeline Metadata, Brandon J. Schoenfeld Dec 2020

Metalearning By Exploiting Granular Machine Learning Pipeline Metadata, Brandon J. Schoenfeld

Theses and Dissertations

Automatic machine learning (AutoML) systems have been shown to perform better when they use metamodels trained offline. Existing offline metalearning approaches treat ML models as black boxes. However, modern ML models often compose multiple ML algorithms into ML pipelines. We expand previous metalearning work on estimating the performance and ranking of ML models by exploiting the metadata about which ML algorithms are used in a given pipeline. We propose a dynamically assembled neural network with the potential to model arbitrary DAG structures. We compare our proposed metamodel against reasonable baselines that exploit varying amounts of pipeline metadata, including metamodels used …


Galectin-1 Improves Sarcolemma Repair And Decreases The Inflammatory Response In Lgmd2b Models, Matthew F. Rathgeber Dec 2020

Galectin-1 Improves Sarcolemma Repair And Decreases The Inflammatory Response In Lgmd2b Models, Matthew F. Rathgeber

Theses and Dissertations

Limb-girdle muscular dystrophy type 2B (LGMD2B) is caused by mutations in the dysferlin gene, resulting in non-functional dysferlin, a key protein found in muscle membrane. Treatment options available for patients are chiefly palliative in nature and focus on maintaining ambulation. Our hypothesis is that galectin-1 (Gal-1), a soluble carbohydrate binding protein, increases membrane repair capacity, myogenic potential, M2 macrophage polarization and decreases NF-κB inflammation in dysferlin-deficient models. To test this hypothesis, we used recombinant human galectin-1 (rHsGal-1) to treat dysferlin-deficient models. We show that rHsGal-1 treatments of 48 h-72 h promotes myogenic maturation as indicated through improvements in size, myotube …


Ranking Aspect-Based Features In Restaurant Reviews, Jacob Ling Hang Chan Dec 2020

Ranking Aspect-Based Features In Restaurant Reviews, Jacob Ling Hang Chan

Theses and Dissertations

Consumers continuously review products and services on the internet. Others have frequently relied on those reviews in making purchasing decisions. Review texts are usually free-form and associated with a star rating on a 5-point scale. The majority of restaurants receive a 3.5 or 4 star rating on average, so a standalone star rating does not provide adequate information for readers to make a decision. Many researchers have approached the problem with sentiment analysis to classify a sentence or a text as expressing a positive or a negative review. Sentiment analysis, even at the fine-grained level, can only provide classification of …


Front Matter Dec 2020

Front Matter

Issues in Religion and Psychotherapy

No abstract provided.


Trace: A Differentiable Approach To Line-Level Stroke Recovery For Offline Handwritten Text, Taylor Neil Archibald Dec 2020

Trace: A Differentiable Approach To Line-Level Stroke Recovery For Offline Handwritten Text, Taylor Neil Archibald

Theses and Dissertations

Stroke order and velocity are helpful features in the fields of signature verification, handwriting recognition, and handwriting synthesis. Recovering these features from offline handwritten text is a challenging and well-studied problem. We propose a new model called TRACE (Trajectory Recovery by an Adaptively-trained Convolutional Encoder). TRACE is a differentiable approach using a convolutional recurrent neural network (CRNN) to infer temporal stroke information from long lines of offline handwritten text with many characters. TRACE is perhaps the first system to be trained end-to-end on entire lines of text of arbitrary width and does not require the use of dynamic exemplars. Moreover, …


Who, What, Why & How: Reimagining State Constitutional Analysis In School Finance Litigation, William Thro Dec 2020

Who, What, Why & How: Reimagining State Constitutional Analysis In School Finance Litigation, William Thro

BYU Education & Law Journal

Despite the Supreme Court’s recognition of the importance of public education, America’s public schools remain ravaged by “savage inequalities”which lead to failure of the public schools.Because every State, except Hawaii, partially finances local public schools through local property taxes and because there are differences in the value of real property, there are vast disparities in available funding for local school districts. While every State Constitution requires the State Legislature to establish a public school system and while the State Legislatures have enacted a variety of statutes in an attempt to meet the state constitutional obligations, virtually every State has seen …


The Layered Frames Of Performed Tabletop: Actual-Play Podcasts And The Laminations Of Media, Brendan Decicio Dec 2020

The Layered Frames Of Performed Tabletop: Actual-Play Podcasts And The Laminations Of Media, Brendan Decicio

Theses and Dissertations

Despite their sudden growth in popularity, the role-playing actual-play podcasts have either been ignored or grouped with the genre of audio drama in prior scholarly works. Examination using frame analysis shows, however, that these podcasts are distinct in their engagement of the audience on multiple, simultaneous levels; levels which correspond with well-known media genres such as Documentary, Fiction, and Game Play. Each frame has its own layer of identities, conduct, and avenue for appealing to audiences just as these genres have their own distinct appeals. Through the combinations of these frames, familiar tropes and techniques such as Short-Form Improv and …


Full Issue, Vol. 12 Dec 2020

Full Issue, Vol. 12

Monographs of the Western North American Naturalist

No abstract provided.


Checklist Of The Vascular Flora Of The Kaibab Plateau, Coconino County, Arizona, Glenn R. Rink, Wendy Hodgson, Barbara Goodrich Phillips Dec 2020

Checklist Of The Vascular Flora Of The Kaibab Plateau, Coconino County, Arizona, Glenn R. Rink, Wendy Hodgson, Barbara Goodrich Phillips

Monographs of the Western North American Naturalist

Seven hundred and ninety-two vascular plant taxa were documented for the Kaibab Plateau through a review of herbarium records (primarily online) and targeted fieldwork focusing on springs, natural ponds, cattle tanks, and sinkholes. Taxa not previously published or currently recorded on SEINet for the Kaibab Plateau include 7 taxa for Grand Canyon National Park, 4 taxa for the Kaibab National Forest, 51 taxa for the Kaibab Plateau, 6 taxa for Coconino County, and 5 taxa for the state of Arizona. Two hundred and thirty previously published records or records on SEINet were eliminated from the flora area by reviewing specimens …


Metabolomics Of Acid Whey Derived From Greek Yogurt, Muriel Mercedes Allen Nov 2020

Metabolomics Of Acid Whey Derived From Greek Yogurt, Muriel Mercedes Allen

Theses and Dissertations

Acid whey, a byproduct of Greek yogurt production, has little commercial value due to its low protein content and is also environmentally harmful when disposed of as waste. However, as a product of microbial fermentation, acid whey could be a rich source of beneficial metabolites associated with fermented foods. This study increases understanding of acid whey composition by providing a complete metabolomic profile of acid whey. Commercial and lab-made Greek yogurts, prepared with three different bacterial culture combinations, were evaluated. Samples of unfermented yogurt mix and cultured whey from each batch were analyzed. Ultra-high-performance liquid chromatography/tandem mass spectrometry metabolomics were …


Improving Rangeland Seedling Recruitment Using Fungicide Seed Coatings And Golden Eagle Reproductive Success In Relation To Explosive Military Tests And Trainings, Benjamin William Hoose Nov 2020

Improving Rangeland Seedling Recruitment Using Fungicide Seed Coatings And Golden Eagle Reproductive Success In Relation To Explosive Military Tests And Trainings, Benjamin William Hoose

Theses and Dissertations

The objective of the first chapter of this thesis was to determine whether fungicide seed coatings constitute an effective strategy for increasing seedling recruitment in restoration scenarios in the Intermountain West. We tested a mixture of four fungicides that address potential fungal pathogens to bluebunch wheatgrass, a dominant bunchgrass that is commonly used in restoration. Across two sites and three years, we found that the fungicide seed coating increased emergence in five of the six sites and years, with an average increase of 59.1% over the control. There was a strong interaction (P < 0.001) between the effects of fungicide treatment, the year and the site on emergence. This interaction was likely related to the effects of the hydrothermal microsite environment on disease severity. Further research is necessary to fully understand the conditions under which fungicide seed coatings are most likely to be effective. The objectives the second chapter of this thesis were to 1) estimate the effects of golden eagle nest proximity to explosive disturbances on reproductive success given other relevant habitat variables (e.g. indices of topography and vegetation), and 2) determine the relative importance of nest proximity to explosive disturbances as a predictor of golden eagle reproductive success compared to other relevant habitat variables. Reproductive success data were collected from nesting territories within and surrounding land controlled and managed by the US Department of Defense. We fit the reproductive survey data using generalized linear mixed-effects models comprised of unique, hypothesis-based sets of habitat variables. We compared the models using AICc-based model selection processes. Given the best approximating model, we found no evidence that the likelihood of reproductive success was affected by nest proximity to explosive disturbances (P = 0.460). We further found nest proximity to explosive disturbances consistently ranked in the bottom 50% of relative variable importance. These results may indicate golden eagle tolerance or habituation to explosive military tests and trainings. Although the two chapters of this thesis are disjointed, they are loosely unified by the ecological importance of disturbance, invasive species, and restoration within the Great Basin ecoregion.


Swarm-Based Design Of Proportional Integral And Derivative Controllers Using A Compromise Cost Function: An Arduino Temperature Laboratory Case Study, Paulo De Moura Oliveira, John Hedengren, Eduardo Solteiro Pires Nov 2020

Swarm-Based Design Of Proportional Integral And Derivative Controllers Using A Compromise Cost Function: An Arduino Temperature Laboratory Case Study, Paulo De Moura Oliveira, John Hedengren, Eduardo Solteiro Pires

Faculty Publications

Simple and easy to use methods are of great practical demand in the design of Proportional, Integral, and Derivative (PID) controllers. Controller design criteria are to achieve a good set-point tracking and disturbance rejection with minimal actuator variation. Achieving satisfactory trade-offs between these performance criteria is not easily accomplished with classical tuning methods. A particle swarm optimization technique is proposed to design PID controllers. The design method minimizes a compromise cost function based on both the integral absolute error and control signal total variation criteria. The proposed technique is tested on an Arduino-based Temperature Control Laboratory (TCLab) and compared with …


Lithofacies, Sequence Stratigraphy, And Sedimentology Of Desert Creek Platform, Slope, And Basin Carbonates, Southern Margin Of The Aneth Complex, Middle Pennsylvanian, Paradox Basin, Utah, Christopher M. Perfili Nov 2020

Lithofacies, Sequence Stratigraphy, And Sedimentology Of Desert Creek Platform, Slope, And Basin Carbonates, Southern Margin Of The Aneth Complex, Middle Pennsylvanian, Paradox Basin, Utah, Christopher M. Perfili

Theses and Dissertations

The Aneth Field in the Paradox Basin (SE Utah) has produced nearly 500 MMbbls of oil from phylloid-algal and oolitic carbonate reservoirs of the lower and upper Desert Creek (Paradox Formation, Middle Pennsylvanian) sequences, respectively. The oil resides in a 150 to 200 foot-thick isolated carbonate platform located in a distal ramp setting on the southwest margin of the Paradox Basin. The horseshoe-shaped platform is roughly 12 miles in diameter with an aerial extent of approximately 144 square miles. Evaluation of the platform-to-basin transition on the leeward (southern) margin of the Aneth Platform, the focus of this study, was made …


Marsupial Visitation To The Inflorescences Of The Endemic Agave Cupreata In Western Mexico, Rosario Arreola-Gómez, Eduardo Mendoza Nov 2020

Marsupial Visitation To The Inflorescences Of The Endemic Agave Cupreata In Western Mexico, Rosario Arreola-Gómez, Eduardo Mendoza

Western North American Naturalist

We report, for the first time, visitation to the inflorescences of the endemic Agave cupreata by 2 marsupial species, Didelphis virginiana and Tlacuatzin canescens, in the state of Michoacán, western Mexico. These 2 species were recorded drinking the nectar of A. cupreata and transporting large amounts of pollen among the flowers. This agave is restricted to the mountainous slopes of the Balsas River basin in the states of Michoacán and Guerrero, and it constitutes the raw material for local production of a traditional beverage known as mezcal. In contrast to many other agaves that can propagate vegetatively, A. cupreata …


Columbine And The Myth Of The Juvenile Superpredator, Christopher M. Mosqueda Nov 2020

Columbine And The Myth Of The Juvenile Superpredator, Christopher M. Mosqueda

Theses and Dissertations

Mass media has great influence over its audience. When a sensational story hits the news waves, the general public's attention is instantly riveted to the television screen. News stories that involve the deaths of innocent people often create a culture of fear, fuel false narratives, and scatter misinformation. In fact, this culture of fear, coupled with misleading information, created the myth of the juvenile superpredator, a phrase coined by DiIulio in the early 1990s. The stereotyped superpredator was a homicidal, uncontrollable youth hiding within areas where crime and violence are rare. In particular, this myth was propagated following the massacre …


An Ulk1-Independent Mechanism Of Atg9a Regulation In Basal Autophagy, Ashari Rashmi Kannangara Nov 2020

An Ulk1-Independent Mechanism Of Atg9a Regulation In Basal Autophagy, Ashari Rashmi Kannangara

Theses and Dissertations

Macroautophagy (hereafter referred to as autophagy) is the bulk degradation and recycling of cytoplasmic materials by forming a double membrane vesicle called the autophagosome. Autophagosome formation is regulated by the coordinated action of a set of proteins. ATG9A is the only multispanning transmembrane protein that plays an essential role in autophagosome formation, yet its function is largely elusive. Previous studies have shown that the C-terminus of ATG9A plays an important role in regulating its trafficking and proper function in autophagy. In line with that idea, we previously identified an AMPK- and ULK1- mediated phosphorylation on the C terminus of ATG9A …


Social Contact, Time Alone, And Parental Subjective Well-Being: A Focus On Stay-At-Home Fathers Using The American Time Use Survey, Erin K. Holmes, Jocelyn Wikle, Clare R. Thomas, Mckell A. Jorgensen, Braquel R. Egginton Nov 2020

Social Contact, Time Alone, And Parental Subjective Well-Being: A Focus On Stay-At-Home Fathers Using The American Time Use Survey, Erin K. Holmes, Jocelyn Wikle, Clare R. Thomas, Mckell A. Jorgensen, Braquel R. Egginton

Faculty Publications

Stay-at-home fathers (SAHFs) face negative stereotypes and social stigma, which may be linked to negative feelings during social contact. In this study, we compare SAHFs' social contact and time alone to that of stay-at-home mothers and parents of other work/caregiving statuses. In addition, we analyze SAHFs' subjective well-being when with their children, spouse, noon spouse adults, and when alone to more accurately capture the positive and negative valences of their experiences. Using individual-level time-use diaries form the American Time Use Survey (N = 35, 959), a nationally representative sample, we find that compared to fathers working full time, SAHFs …


The Eidgenössisches Schützenfest: A Traditional Shooting Festival, Stephen P. Halbrook Nov 2020

The Eidgenössisches Schützenfest: A Traditional Shooting Festival, Stephen P. Halbrook

Swiss American Historical Society Review

The Eidgenössisches Schützenfest (Swiss federal shooting competition), the largest rifle shooting match in the world, is held every five years in a different region of Switzerland. I have participated in five of the matches at Thun in 1995, Bière in 2000, Frauenfeld in 2005, Aarau in 2010, and Raron (Visp) in 2015. The Luzern 2020 matches have been rescheduled to 2021 due to the coronavirus.


Full Issue Nov 2020

Full Issue

Swiss American Historical Society Review

No abstract provided.


The Hong Kong Heritage Project: Preserving Corporate And Community History, Amelia L. Allsop Oct 2020

The Hong Kong Heritage Project: Preserving Corporate And Community History, Amelia L. Allsop

Journal of East Asian Libraries

The Hong Kong Heritage Project (HKHP), established by Sir Michael Kadoorie in 2007, is one of the first corporate archives to be founded in Hong Kong. It followed in the footsteps of HSBC’s Asia Pacific Archive which pioneered business archives in the city when opened in 2004. Today, more than a decade on, several more corporate archives have been established, although the total number of private archives in Hong Kong remains small.[1] In a city with no archival law - Hong Kong is one of the few jurisdictions in the world that has no archival legislation covering government records …


Predators As Agents Of Selection And Diversification, Jerald B. Johnson, Mark C. Belk Oct 2020

Predators As Agents Of Selection And Diversification, Jerald B. Johnson, Mark C. Belk

Faculty Publications

Predation is ubiquitous in nature and can be an important component of both ecological and evolutionary interactions. One of the most striking features of predators is how often they cause evolutionary diversification in natural systems. Here, we review several ways that this can occur, exploring empirical evidence and suggesting promising areas for future work. We also introduce several papers recently accepted in Diversity that demonstrate just how important and varied predation can be as an agent of natural selection. We conclude that there is still much to be done in this field, especially in areas where multiple predator species prey …


Jeal 171 Full Issue Oct 2020

Jeal 171 Full Issue

Journal of East Asian Libraries

No abstract provided.


Characterization Of Slip Activity In The Presence Of Slip Bands Using Surface-Based Microscopy Techniques, Ryan Aaron Sperry Oct 2020

Characterization Of Slip Activity In The Presence Of Slip Bands Using Surface-Based Microscopy Techniques, Ryan Aaron Sperry

Theses and Dissertations

Further understanding of mesoscale slip mechanics is crucial to future development of polycrystalline metals with improved performance. The research contained within this thesis aims to characterize localized mesoscale slip on slip bands further through two studies. First, a comprehensive comparison of slip system identification techniques was carried out to further validate each method as well as compare advantages and disadvantages of each. Second, slip bands in the presence of grain boundaries were studied to better characterize the dislocation content and behavior. In the first study, the use of SEM-DIC, AFM, ECCI, and HR-EBSD to characterize slip-system activity was assessed on …


Mechanisms Of Asymmetric Membrane Formation In Nonsolvent-Induced Phase Separation, Jan Ulric Garcia, Tatsuhiro Iwama, Eva Y. Chan, Douglas R. Tree, Kris T. Delaney, Glenn H. Fredrickson Oct 2020

Mechanisms Of Asymmetric Membrane Formation In Nonsolvent-Induced Phase Separation, Jan Ulric Garcia, Tatsuhiro Iwama, Eva Y. Chan, Douglas R. Tree, Kris T. Delaney, Glenn H. Fredrickson

Faculty Publications

We report the first simulations of nonsolvent-induced phase separation (NIPS) that predict membrane microstructures with graded asymmetric pore size distribution. In NIPS, a polymer solution film is immersed in a nonsolvent bath, enriching the film in nonsolvent, and leading to phase separation that forms a solid polymer-rich membrane matrix and polymer-poor membrane pores. We demonstrate how mass-transfer-induced spinodal decomposition, thermal fluctuations, and glass-transition dynamics—implemented with mobility contrast between the polymer-rich and polymer-poor phases—are essential to the formation of asymmetric membrane microstructures. Specifically, we show that the competition between the propagation of the phase-separation and glass-transition fronts determines the degree of …


Making The Move From Reactive To Proactive Online Teaching, Chad A. Turley Oct 2020

Making The Move From Reactive To Proactive Online Teaching, Chad A. Turley

Instructional Psychology and Technology Graduate Student Projects

Design and development project. The purpose of this project was to design and develop an online module to support online teachers in the most current, research-based, online teaching best practices and then provide the opportunity to practice them. Online teachers learn the theory behind the best practices, as well as the “how to” steps to implement them in an online course.


An Analysis Of The Trump Administration’S Policies And Plans For Illegal Immigrants, Michelle Clifford Oct 2020

An Analysis Of The Trump Administration’S Policies And Plans For Illegal Immigrants, Michelle Clifford

Student Works

The Trump Administration’s immigration policy, especially as geared towards Latin America, is currently ineffective. Its goal is to have zero tolerance for illegal immigration, yet it focuses most of its resources on building a wall to prevent illegal border crossings. Not only do illegal border crossers make up only 38% of illegal immigrants within the United States, the sections of the wall that already exist have shown to be little to no hindrance to those wishing to entire the United States illegally and thus pose an unwise expenditure of resources. President Trump himself has damaged relationships with Latin American leaders …


The Restored Church Of Jesus Christ And The Holy Land: Beginnings, David M. Whitchurch Oct 2020

The Restored Church Of Jesus Christ And The Holy Land: Beginnings, David M. Whitchurch

BYU Studies

It is a privilege to be with you as we celebrate the thirtieth anniversary of the dedication of the Jerusalem Center and the impact it has made on the lives of so many students, faculty, administrators, members of the Church from around the world, and those who currently reside in the Holy Land. A heartfelt welcome to all.


Documents: The Joseph Smith Papers, Richard E. Bennett Oct 2020

Documents: The Joseph Smith Papers, Richard E. Bennett

BYU Studies

Almost fifty years ago, my wife, Patricia, and I had the distinct privilege to work for incoming Church Historian Leonard J. Arrington in combing through the archives of the Church History Library in Salt Lake City for source materials long since shelved, considered lost, or otherwise off-limits. Along the way, we also enjoyed working with a team of other dedicated scholars brought in to work under Arrington’s kind and learned tutorship. Among them was a talented archivist/historian named Dean Jessee, who was an assiduous student of the document, particularly the papers of the prophet Joseph Smith Jr. Owning a passion …