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Articles 3001 - 3030 of 17331
Full-Text Articles in Entire DC Network
Novel Prey And Foraging Behavior Of The California Whiptail (Aspidoscelis Tigris Munda) Along Two Intermittent Streams, Robert A. Leidy, Garrett A. Leidy, Kate I. Goldmann
Novel Prey And Foraging Behavior Of The California Whiptail (Aspidoscelis Tigris Munda) Along Two Intermittent Streams, Robert A. Leidy, Garrett A. Leidy, Kate I. Goldmann
Western North American Naturalist
During the spring of 2006, we observed predation by California whiptail (Aspidoscelis tigris munda) on the endemic coastal roach (Hesperoleucus venustus) from an isolated pool along an intermittent reach of Coyote Creek, Santa Clara County, California, USA. Our observation is the first published record, to the best of our knowledge, of a whiptail in the genus Aspidoscelis in the southwestern United States preying upon fish. We also report on subsequent observations during 2014, 2015, and 2020 of California whiptail foraging along isolated, intermittent stream pools within this watershed.
Durante la primavera del 2006, observamos depredación por …
Forecasting Inundation Extents In The Amazon Basin Using Srh-2d And Hand Based On The Geoglows Ecmwf Streamflow Services, Christopher Hyde Edwards
Forecasting Inundation Extents In The Amazon Basin Using Srh-2d And Hand Based On The Geoglows Ecmwf Streamflow Services, Christopher Hyde Edwards
Theses and Dissertations
Floods are the most impactful natural disasters on earth, and reliable flood warning systems are critical for disaster preparation, mitigation, and response. The GEOGloWS ECMWF Streamflow Services (GESS) provide forecasted streamflow throughout the world. While forecasted discharge is essential to flood warning, forecasted inundation extents are required to understand and predict flood impact. In this research, I sought to expand GESS flood warning potential by generating inundation extents from streamflow forecasts. I compared Height Above Nearest Drainage (HAND), a method beneficial for flood mapping on a watershed scale, to a 2D hydrodynamic model, specifically Sedimentation and River Hydraulics – Two …
Social Media Influence, Brian Smith
Social Media Influence, Brian Smith
BYU Research Development Office Research Networking Conference
Social Impact, Social Media Influence & Influencers, Crisis, Advocacy, Employee Engagement, Intercultural Communication, Integrated Marketing, Relationships
Developing Interdisciplinary Creative Collaboration, David Habben
Developing Interdisciplinary Creative Collaboration, David Habben
BYU Research Development Office Research Networking Conference
Illustration, visual studies, creative problem-solving
Dellacorte Lab At Byu, Dennis Dellacorte
Dellacorte Lab At Byu, Dennis Dellacorte
BYU Research Development Office Research Networking Conference
Protein Folding, Protein Engineering, Building models that help interpret experimental results
Using X-Ray Vision To Understand How Things Break: Lensless X-Ray Imaging Of Materials In Extreme Conditions, Richard Sandberg
Using X-Ray Vision To Understand How Things Break: Lensless X-Ray Imaging Of Materials In Extreme Conditions, Richard Sandberg
BYU Research Development Office Research Networking Conference
Microscopy, nanotechnology, optics, inverse problems, applied math, materials science, computer science, data science, x-ray imaging and diffraction
Smart Seeds - A Platform For Wide Area Land Management, Brian Mazzeo
Smart Seeds - A Platform For Wide Area Land Management, Brian Mazzeo
BYU Research Development Office Research Networking Conference
Micropower Circuits Laboratory
Psychometric Investigation Of The Attachment To God Inventory And Its Implications For The Psychology Of Religion And Spirituality, Justin Paul Zamora
Psychometric Investigation Of The Attachment To God Inventory And Its Implications For The Psychology Of Religion And Spirituality, Justin Paul Zamora
Theses and Dissertations
The purpose of this study is to conduct a psychometric investigation of the Attachment to God Inventory (AGI; Beck & McDonald, 2004) using a national sample of socioeconomically and religiously diverse young adults commonly referred to as millennials (i.e., persons born between 1980 and 1996; Pew Research Center, 2018). Confirmatory factor analytic (CFA) results failed to yield satisfactory fit for the AGI model using the entire sample and a Christian-only subsample. Alternative model specifications that accounted for method factors, higher-order factors, and bi-factors also failed. Exploratory factor analysis (EFA) suggested alternative factor solutions that were cross-validated using CFA. Support for …
Considering Social Impact When Engineering For Global Development, Hans Jorgen Ottosson
Considering Social Impact When Engineering For Global Development, Hans Jorgen Ottosson
Theses and Dissertations
Every manufactured product has an environmental impact, a social impact, and an economic impact. As engineers, we should do our best to understand how our design decisions influence these impacts (the three pillars of sustainability), and at the same time make decisions that collectively lead to maximum positive impacts, or minimum negative impacts on the economy, environment, and society. Many times, engineers show interest and want to design for all three pillars of sustainability but are often constrained to focus on the environmental and economic aspects, leaving out social sustainability due to lack of understanding and resources. In practice, this …
The Perceived Effect Of Pause Length And Location On Speaker Likability And Communicative Effectiveness, Julia M. Price
The Perceived Effect Of Pause Length And Location On Speaker Likability And Communicative Effectiveness, Julia M. Price
Theses and Dissertations
Previous studies have examined the effect of atypical speech pause on conversational fluency and how the conversational listener perceives the speaker. The present study investigated the effect of pause duration of increasing length and in differing sentential locations on listener perceptions of communicative effectiveness and speaker likability. One neurotypical male and one neurotypical female speaker recorded three sentences from the Quick Aphasia Battery, and artificial pauses of varying lengths (250 ms, 400 ms, 550 ms, 700 ms, 850 ms, and 1 sec) were inserted before the subject, verb, and object of each sentence. The six baseline (unmodified) sentences were also …
Stakeholders' Perceptions Of Available Services In A Rural Community To Effectively Educate Individuals With Autism Spectrum Disorder, Candice Walker
Stakeholders' Perceptions Of Available Services In A Rural Community To Effectively Educate Individuals With Autism Spectrum Disorder, Candice Walker
Theses and Dissertations
Prevalence of autism spectrum disorder (ASD) has increased 150% over the last 20 years, affecting all communities, with future projections of further rise. This is a particular concern for the public education system, where laws mandate that schools provide meaningful education to all students. Resources must be in place to provide the level of support children with ASD require for a successful educational experience. These resources are often expensive and require specialized training to secure. Rural schools face unique barriers meeting the standards set forth through federal law. To determine the most productive use of available resources as well as …
Physical Health As A Predictor Of Change In Self-Reported Presenting Problems In Couple Therapy, As Mediated By Emotional Regulation, Janette J. Driscoll
Physical Health As A Predictor Of Change In Self-Reported Presenting Problems In Couple Therapy, As Mediated By Emotional Regulation, Janette J. Driscoll
Theses and Dissertations
Recent literature in couple therapy has demonstrated the effects of physical health on some common presenting problems; however, few studies have considered progress as a construct on its own, irrespective of client-identified presenting problem. The current study used an Actor-Partner Interdependence Mediated Model to determine the connection between each partner's physical health and their own and their partner's self-reported progress in couple therapy, mediated by each partner's emotional regulation. Physical health was measured every four sessions using the Health-Related Quality of Life scale, and progress was measured by the Presenting Problem Progress Questionnaire given each time a couple attended therapy. …
Concepts For Rapid-Refresh, Global Ocean Surface Wind Measurement Evaluated Using Full-System Parametric Extrema Modeling, M. Patrick Walton
Concepts For Rapid-Refresh, Global Ocean Surface Wind Measurement Evaluated Using Full-System Parametric Extrema Modeling, M. Patrick Walton
Theses and Dissertations
Satellite wind vector data is integral to atmospheric models and forecasts. Currently, the limited refresh rate of global wind vector measurement systems makes it difficult to observe diurnal variation of mesoscale processes. Using advancements in the underlying subsystem technologies, new satellite wind scatterometers may be possible that increase temporal resolution, among other performance metrics. I propose a method for parametrically modeling the extreme performance range of a complex system. I use this method to develop a model of the space of possible satellite wind scatterometer designs. I validate the model using point designs of heritage scatterometers. Finally, I present two …
Pre-Columbian Cultivation Of Agave Species Through Rock Mulching: Potential For Modern Applications, Hector Genaro Ortiz Cano
Pre-Columbian Cultivation Of Agave Species Through Rock Mulching: Potential For Modern Applications, Hector Genaro Ortiz Cano
Theses and Dissertations
As global temperatures rise, cultivation of C3 and C4 crops in arid and semi-arid regions will face major challenges in producing biomass for billions of people. Conventional agricultural techniques that require copious irrigation will need to be complemented with dryland-farming techniques and drought-tolerant crops, such as those from the Agave genus, which use CAM photosynthesis. In the past and present, humans from arid and semi-arid regions of America have maintained a symbiotic relationship using and cultivating Agave (Agavoideae, Asparagaceae). In pre-Columbian times, Native Americans from arid regions relied on Agave cultivation as a subsistence crop to produce food, medicine, and …
Linguistics Of Russian Media During The 2016 Us Election: A Corpus-Based Study, Devon K. Terry
Linguistics Of Russian Media During The 2016 Us Election: A Corpus-Based Study, Devon K. Terry
Theses and Dissertations
The purpose of this study is to perform a linguistic analysis of Russian mass media focused on its coverage of the 2016 US presidential election. It will be a corpus-based study, using a corpus as a foundational source for quantitative and qualitative data. This study will use a collection of keywords from the corpus and analyze their contexts as they pertain to Hillary Clinton and Donald Trump. This study uses corpus linguistic research tools such as sentence tokenization, Key Words in Context (KWIC), sentiment analysis, word embedding visualization, word-vector math, word frequency lists, and collocate analysis as part of the …
Text-To-Speech Systems: Learner Perceptions Of Its Use As A Tool In The Language Classroom, Joseph Chi Man Mak
Text-To-Speech Systems: Learner Perceptions Of Its Use As A Tool In The Language Classroom, Joseph Chi Man Mak
Theses and Dissertations
Text-to-speech (TTS) systems are ubiquitous. From Siri to Alexa to customer service phone call options, listening in a real-world context requires language learners to interact with TTS. Traditionally, language learners report difficulty when listening due to various reasons including genre, text, task, speaker characteristics, and environmental factors. This naturally leads to the question: how do learners perceive TTS in instructional contexts? Since TTS allows controls on speaker characteristics (e.g. gender, regional variety, speed, etc.) the variety of materials that could be created--especially in contexts in which native speakers are difficult or expensive to find--makes this an attractive option. However, the …
Assessment And Expansion Of Laboratory-Based Testing Of Biomass Cookstoves, Cameron M. Quist
Assessment And Expansion Of Laboratory-Based Testing Of Biomass Cookstoves, Cameron M. Quist
Theses and Dissertations
Biomass cookstoves are a significant source of various pollutants, such as CO2, CO, and particulate matter (PM). To mitigate the issues surrounding cookstoves, significant research has been undertaken on improved cookstoves (ICS). This research can be performed in a laboratory setting, in the field, or a combination of both. This work concentrates on the purely laboratory testing. Laboratory testing has both advantages and disadvantages when compared to field testing (e.g. decreased cost and increased consistency). However, field applications are variable, environments can be significantly different (for example wind and ambient temperature can be very different in the field vs. a …
"It's Like Being Pulled In Two Directions": Experiences Of Transgender Latter-Day Saints, Morgan Monet
"It's Like Being Pulled In Two Directions": Experiences Of Transgender Latter-Day Saints, Morgan Monet
Theses and Dissertations
This study qualitatively examined the experiences of transgender individuals who also identify as active members of the Church of Jesus Christ of Latter-day Saints (N=10). Researchers took an interpretive phenomenological approach to elicit factors which allow trans Mormon folks to hold their apparently conflicting religious and gender identities simultaneously (and the consequences of doing so). Overall, we aimed to answer the broad question, “what is it like to be transgender and Mormon?” Following a process of semi-structured interviews, transcription, and coding, the broad categories which seemed to connect many elements of the trans/Mormon experience were 1) a sense of being …
An Εhf And Δ18o Isotopic Study Of Zircon Of The Mount Osceola And Conway Granites, White Mountain Batholith, New Hampshire: Deciphering The Petrogenesis Of A-Type Granites, Javier Fabian Matos Strauss
An Εhf And Δ18o Isotopic Study Of Zircon Of The Mount Osceola And Conway Granites, White Mountain Batholith, New Hampshire: Deciphering The Petrogenesis Of A-Type Granites, Javier Fabian Matos Strauss
Theses and Dissertations
A-type granites form in anorogenic settings and typically have high REE concentrations, K2O, Na2O, SiO2, FeOtotal, but low contents of Al2O3, MgO, CaO compared to other granite types. They have been divided in two groups according to their geochemical characteristics: differentiates of mantle-derived magmas (A1), and granites that are the result of melting depleted, lower crust (A2). The two largest A-type granites of the Mesozoic White Mountain Batholith of New Hampshire are the Mount Osceola and Conway granites. Electron microprobe analyses of biotite and amphibole in both granites are similar to those in other A-type granites: Fe-rich, but low MgO, …
Parent Anxiety, Parental Psychological Control, And Adolescent Anxiety: Mediation And Bidirectional Relationships, Iesha R. Gibbons
Parent Anxiety, Parental Psychological Control, And Adolescent Anxiety: Mediation And Bidirectional Relationships, Iesha R. Gibbons
Theses and Dissertations
Anxiety is the most common mental health diagnosis for adolescents. Among important etiological factors are parent anxiety and parenting behavior, which can increase anxiety in adolescents. Adolescent anxiety can also act as a source of stress for parents that then increases parent anxiety and negative parenting behaviors. Using the Family Stress Model, this study aims to examine the longitudinal and bidirectional relationship between parent and adolescent anxiety with parental psychological control acting as a mediator. Structural equation modeling was used to examine these relationships across five waves of data for 457 families. Adolescents (51.86% female, mean age 13.34 at wave …
Synthesis And Utility Of Chiral And Achiral Trifluoroacetamide Substrates In Cycloaddition Reactions, Isaac Theodore Smith
Synthesis And Utility Of Chiral And Achiral Trifluoroacetamide Substrates In Cycloaddition Reactions, Isaac Theodore Smith
Theses and Dissertations
In this document we report the synthesis, characterization, and utility of a chiral amidoacrylate substrate. This substrate features a reactive alkene that can be used in a variety of reactions. [3+2]-Cycloaddition reactions to form pyrroloindolines are shown to proceed with excellent diastereoselectivity (>20:1) and yield (86%). [3+2]-Reactions allow for the stereoselective construction of the pyrroloindoline backbone common in many natural products. Diels-Alder reactions catalyzed by TiCl4 show high yields (82%) with ~2:1 diastereoselectivity. Cyclopropanation reactions proceed in moderate yield (71%) and diastereoselectivity (~3:1). Both Diels-Alder and cyclopropanation reactions utilizing the chiral amidoacrylate substrate serve to stereoselectively produce unnatural amino …
Protein Conformational Stability Enhancement Through Pegylation And Macrocyclization, Qiang Xiao
Protein Conformational Stability Enhancement Through Pegylation And Macrocyclization, Qiang Xiao
Theses and Dissertations
PEGylation can improve the pharmacokinetic properties of protein therapeutics via decreasing renal clearance and shielding the protein surface from proteases, antibody neutrailization, and aggregation. Conformational stability enhancement can provide criteria for the identification of optimal sites for PEGylation, but how PEG influence the noncovalent interactions from the surface of proteins has not been well illustrated. Macrocyclization can effectively enhance the conformational stability of small peptides and large proteins. Combination of PEG-based conformational stability enhancement and macrocyclization-based conformational constraint has not been explored. Macrocycliziation has been employed to stabilize protein tertiary structures, but there are no general guidelines for interhelical staple …
Nonlinear Ultrafast Excitation And Two-Dimensional Terahertz Spectroscopy Of Solids, Brittany E. Knighton
Nonlinear Ultrafast Excitation And Two-Dimensional Terahertz Spectroscopy Of Solids, Brittany E. Knighton
Theses and Dissertations
Ultrafast spectroscopy allows us to probe and understand material properties. With it, we can measure phonon-polaritons (optical phonons coupled with light) and the resulting dispersion curve in lithium niobate. Customizing the excitation source in ultrafast measurements can excite phonon modes to large amplitudes, allowing the experimental exploration of the Potential Energy Surface in solids. However, stronger pump fluences and bigger signal isn't always the answer in ultrafast spectroscopy. When sample signals and their nonlinear and mechanisms cannot be distinguished with 1D measurements, simple 2D THz measurements are a great place to start searching for distinct factors as was the case …
Sexual Beliefs In Couple Relationships: Exploring The Pathways Of Mindfulness, Communication, And Sexual Functioning On Sexual Passion And Satisfaction, Sierra Moore
Undergraduate Honors Theses
In this study I examined the understudied area of sexual beliefs. Two central types of sexual beliefs, growth and destiny, have been found in past research to be differentially associated with sexual and relationship outcomes; however, past research has not explored these beliefs with dyadic data nor considered common intervening variables that might be pathways through which beliefs influence outcomes. Consequently, I used dyadic data to analyze how couples’ specific sexual beliefs (growth and destiny) influenced their sexual mindfulness, communication, and functioning within their couple relationships and how all of these variables influenced sexual satisfaction and sexual passion in a …
The Relationship Experiences Of Male Survivors Of Sexual Abuse: A Qualitative Analysis, Jordan Grant Gibby
The Relationship Experiences Of Male Survivors Of Sexual Abuse: A Qualitative Analysis, Jordan Grant Gibby
Theses and Dissertations
Although the experience of sexual abuse is quite common among men, particularly among those in clinical populations, relatively little research has been done specifically with male survivors and the impact of abuse in their lives. More specifically, the impact of sexual abuse on male survivors' relationship dynamics has been underdeveloped in the research literature. Untapped online data can help illuminate these relationship dynamics, providing insight to clinicians for improved couple and family treatment. Through qualitative analysis of data from online discussion boards at MaleSurvivor.org, the present study examined the ways in which male survivors of sexual abuse described dynamics of …
Assessment Of Great Basin Bristlecone Pine (Pinus Longaevaâ D.K. Bailey) Forest Communities Using Geospatial Technologies, David Richard Burchfield
Assessment Of Great Basin Bristlecone Pine (Pinus Longaevaâ D.K. Bailey) Forest Communities Using Geospatial Technologies, David Richard Burchfield
Theses and Dissertations
Great Basin bristlecone pine (Pinus longaeva D.K. Bailey) is a keystone species of the subalpine forest in the Great Basin and western Colorado Plateau ecoregions in Utah, Nevada, and California. Bristlecone pine is also the world's longest-lived non-clonal organism, with individuals occasionally reaching ages up to 5,000 years old. Because of its longevity, bristlecone pine contains an important proxy record of climate data in its growth rings. Despite its ecological and scientific importance, bristlecone pine's distribution and associated environmental drivers are poorly understood. Geospatial technologies, including unmanned aircraft systems (UAS), remote sensing, geographic information systems (GIS), and spatial modeling techniques …
Pinpointing Pornography's Effects: Paring Off The Influences Of Masturbation, Sexual Desire Discrepancy, And Sexual Engagement In Heterosexual Dyads, Brady C. Eisert
Pinpointing Pornography's Effects: Paring Off The Influences Of Masturbation, Sexual Desire Discrepancy, And Sexual Engagement In Heterosexual Dyads, Brady C. Eisert
Theses and Dissertations
Pornography has increasingly become a hot topic of discussion in the United States, likely due to its increasing rate of consumption. Recent scholarship has indicated the need to account for factors such as masturbation and sexual desire discrepancy when conducting pornography research. The current study isolated the influence pornography use had on those in heterosexual romantic relationships (N=713 couples) by parsing out the effects of sexual desire discrepancy and masturbation. This was done by using a series of nested actor-partner interdependence models (APIM) to see how the relationships between pornography use and sexual satisfaction changed in each model. Masturbation and …
Southwestern Bats And Their External Bacteria, Ernest W. Valdez, Emily M. Johnson, Edward W. Strach, Patrick A. Lewis, William C. Briggs, Nicole A. Caimi, Ara S. Winter, Jennifer J.M. Hathaway, Diana E. Northup
Southwestern Bats And Their External Bacteria, Ernest W. Valdez, Emily M. Johnson, Edward W. Strach, Patrick A. Lewis, William C. Briggs, Nicole A. Caimi, Ara S. Winter, Jennifer J.M. Hathaway, Diana E. Northup
Western North American Naturalist
Bat species diversity within the United States is greatest in the Southwest, with approximately 30 species present. At least 16 of these bat species hibernate and are susceptible to white-nose syndrome (WNS), which is caused by the fungus Pseudogymnoascus destructans. Since 2006, millions of bats from 35 U.S. states and 7 Canadian provinces have died from WNS. In previous studies of external surfaces of bats sampled from southwestern states, Actinobacteria were detected that were shown to have antifungal properties against P. destructans in laboratory testing. These studies motivated us to expand our research to sites that represent possible gateways …
Emotional Geographies Of Beginning And Veteran Reformed Teachers In Mentor/Mentee Relationships, Emily Joan Adams
Emotional Geographies Of Beginning And Veteran Reformed Teachers In Mentor/Mentee Relationships, Emily Joan Adams
Theses and Dissertations
Reformed teaching is better for students' conceptual understanding compared to the more popular traditional style of teaching. Many beginning teachers wanting to teach reformed conform to traditional teaching within their first couple years of teaching. I argue that this can happen because the emotional labor to continue teaching reformed without support is too high. Having a reformed math mentor can decrease this emotional labor and provide more support to beginning reformed teachers. This study builds on and adds to Hargreaves (2001) emotional geography framework to better understand the emotional closeness/distance beginning and veteran reformed teachers have talking about their practice. …