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Articles 1921 - 1950 of 19131
Full-Text Articles in Entire DC Network
Feasibility Of Rna-Based Pathogen Detection In An Infant Formula Matrix, Gweneth Claire Gustafson
Feasibility Of Rna-Based Pathogen Detection In An Infant Formula Matrix, Gweneth Claire Gustafson
Theses and Dissertations
Background: The dairy processing industry is currently hindered by slow, antiquated testing for high-risk pathogens, including Listeria monocytogenes and Cronobacter sakazakii. Powder infant formula's low water activity and substantial fat content enhance the survival and thermotolerance of such foodborne pathogens. As DNA-based detection methods can produce false positives even after cell death, a more accurate approach is needed. The objective of this study is to evaluate the suitability of an RNA-based platform for the detection of pathogens in a dairy powder matrix. Materials and Methods: A unique phenol-chloroform extraction method was used to obtain total RNA from heat-killed and unheated …
Separation Of Perrhenate And Perfluoroalkyl Substances By Ion Chromatography With Customized Stationary Phases, Wai Ning Chan
Separation Of Perrhenate And Perfluoroalkyl Substances By Ion Chromatography With Customized Stationary Phases, Wai Ning Chan
Theses and Dissertations
Ion exchange chromatography (IC) is an analytical technique used to separate charged molecules including ions, proteins, small nucleotides, and amino acids. It can function in anion or cation mode. In this dissertation, anion exchange chromatography was used, and column materials were made in our lab with resorcinarene-based compounds called cavitands. Cavitands create cavities to bind to molecules because of their three-dimensional structure. Two new gradient IC methods were established to identify and quantify perrhenate and perfluoroalkyl substances (PFAS) by customized resorcinarene-based column, zinc cyclen resoecinarene (ZCR) and arginine methyl ester (RUE) columns. The ZCR column accomplished outstanding separation of perrhenate …
The Role Of Cytosolic Chaperonin Cct And Its Co-Chaperone Phlp1 In Folding And Assembly Of Signaling Complexes, Yujin Kwon
Theses and Dissertations
CCT, a large (1 MDa) protein-folding machine, is a eukaryotic group II chaperonin that is essential for folding many cellular proteins and is the most complex of all chaperonins with two rings each composed of eight paralogous subunits. CCT captures proteins in its folding chamber to assist the folding of its substrates. CCT utilizes ATP hydrolysis to open and close its chamber and fold its substrates. CCT has been shown to be important in the folding of proteins with - propeller domains which consist of seven WD40 repeat sequences that fold into -sheets that form the blades of a propeller-like …
Evaluating And Advancing Automated Traffic Signal Performance Measures: Statistical And Machine Learning Approaches, Bangyu Wang
Evaluating And Advancing Automated Traffic Signal Performance Measures: Statistical And Machine Learning Approaches, Bangyu Wang
Theses and Dissertations
Automated traffic signal performance measures (ATSPM) are increasingly used to collect and evaluate traffic data from signalized intersections. ATSPM provide invaluable insights into both current and historical traffic signal performance. With their adoption by over 39 state and local transportation agencies, ATSPM play a crucial role in traffic operation and maintenance. ATSPM are continually evolving, introducing new performance measures and applications tailored to the needs of various transportation agencies. However, despite their potential, several challenges require attention and resolution. The first challenge involves the underutilization of ATSPM data due to its massive volume, which can overwhelm traditional identification and prioritization …
Perceptions Of Teacher Self-Efficacy For A Fourth Year Teacher: A Self-Study Approach, Alyssa Crabb
Perceptions Of Teacher Self-Efficacy For A Fourth Year Teacher: A Self-Study Approach, Alyssa Crabb
Theses and Dissertations
Teacher self-efficacy is a well-researched concept and a key component in student achievement, teacher performance, motivation, and retention. This self-study examined the perceptions of a fourth-year teacher's sense of self-efficacy in her classroom. The study was conducted by journaling about daily events that influenced the teacher's sense of doing well or not over the course of the first term of a school year (August–December). Weekly journals were then re-storied using a three-dimensional narrative structure to ground deeper into the context of the experience of being a teacher. Two main themes emerged: concern for students and concern for evaluation from other …
Critical Engagements With Award Winning Picturebooks: My Journey In Creating A More Equitable Classroom Library, Carrie Elizabeth Crowe
Critical Engagements With Award Winning Picturebooks: My Journey In Creating A More Equitable Classroom Library, Carrie Elizabeth Crowe
Theses and Dissertations
Research consistently shows that students from historically marginalized populations have difficulty accessing texts that represent the realities of their lives. Concerned that such might be the case for my students, I conducted an inventory of my classroom library and sought out award-winning texts that could make my library more diverse and inclusive. I then analyzed these award-winning texts using Bishop's (1992) categories of multicultural literature in order to better understand the picturebooks' underlying messages and ideologies. My examinations showed that the majority of the texts fit into the same category (culturally specific), though I was able to identify award-winning texts …
Terahertz From Electrons, Electronics From Terahertz, Clayton D. Moss
Terahertz From Electrons, Electronics From Terahertz, Clayton D. Moss
Theses and Dissertations
Time-domain terahertz spectroscopy (THz-TDS) is a valuable technique for studying collective ultrafast phenomena. Several mechanisms exist for converting ultrashort optical laser pulses into coherent THz sources. Broadband THz pulses can be obtained from electron currents in air plasma, which requires combinations of different colors of light to be most effective. I report multi-color generation schemes of THz pulses that deliver coherent THz output. Experimental and theoretical work using the photocurrent model describe ways to use non-harmonic color combinations to utilize several sources of light available in a table-top laser setup. Additionally, THz-TDS is used to study a variety of ultrafast …
Robust Localization And Landing For Autonomous Unmanned Aerial Vehicles In Maritime Environments, Alexander D. Jordan
Robust Localization And Landing For Autonomous Unmanned Aerial Vehicles In Maritime Environments, Alexander D. Jordan
Theses and Dissertations
This thesis presents methods for robust precision landing of unmanned air vehicles (UAVs) on platforms at sea. Localization methods are proposed for UAV-to-boat state estimation for systems that employ real- time kinematic (RTK) global navigation satellite system (GNSS) and vision sensors. Solutions for GNSS-only are first presented, followed by the fusion of GNSS and vision. The important problem of sensor intrinsic calibration is solved with a novel offline batch estimation approach. Hardware results are presented for all methods. Our calibration of GNSS-to-camera is shown to estimate sensor offsets with millimeter level accuracy. Localization systems are combined with custom state machines …
The Influence Of Political Media On Large Language Models: Impacts On Information Synthesis, Reasoning, And Demographic Representation, Alexander Glenn Shaw
The Influence Of Political Media On Large Language Models: Impacts On Information Synthesis, Reasoning, And Demographic Representation, Alexander Glenn Shaw
Theses and Dissertations
This thesis investigates the impact of finetuning the LLaMA 33B language model on partisan news datasets, revealing negligible changes and underscoring the enduring influence of pretraining datasets on model opinions. Training nine models across nine distinct news datasets spanning three topics and two ideologies, the study found consistent demographic representation, predominantly favoring liberal, college-educated, high-income, and non-religious demographics. Interestingly, a depolarizing effect emerged from partisan news finetuning, suggesting that intense exposure to topic-specific information might lead to depolarization, irrespective of ideological alignment. Despite the exposure to contrasting viewpoints, LLaMA 33B maintained its common sense reasoning ability, showing minimal variance on …
Full Issue
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
No abstract provided.
Authorship Essays Reprinted
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
Since 1830, millions of people have read the Book of Mormon and have been convinced that Joseph Smith's account of its origins is correct-that it is an ancient document given to him for a season by a divine messenger to translate by the gift and power of God. Critics, however, have argued that the book must be a fraud.
Annual Symposium Will Be Repeated In Oakland
Annual Symposium Will Be Repeated In Oakland
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
"Benjamin's Speech: The Ninth Annual FARMS Symposium on the Book of Mormon" will be repeated in Oakland, California, on 20 April 1996, a week after its original presentation in Provo. Sponsored by the Saratoga Stake, this version of the symposium will feature most of the same lectures as the original (see details on page 1), most of them live and some on videotape.
Broadcast Schedules Set
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
Please note the following broadcasts of FARMS presentations.
New Committees Will Set Media And Electronic Policies
New Committees Will Set Media And Electronic Policies
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
FARMS has formed two new committees to give the Foundation guidance on nonprint forms of distribution. As opportunities grow to disseminate faithful scholarship on the Book of Mormon and related subjects through new means, the Foundation wants to be ready to respond appropriately.
Farms Audiovisual Materials Can Be Found In Video Stores And Libraries
Farms Audiovisual Materials Can Be Found In Video Stores And Libraries
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
FARMS is now providing some public libraries and video rental stores with copies of videos, audiotapes, and transcripts of Hugh Nibley's Teachings of the Book of Mormon course videos and the FARMS Book of Mormon Lecture Series, as part of its mission to make Book of Mormon research findings available widely, promptly, and economically.
Early Life Drift And Environmental Effects In Nanocomposite Sensors For Biomechanics Applications, Jacob D. Carter
Early Life Drift And Environmental Effects In Nanocomposite Sensors For Biomechanics Applications, Jacob D. Carter
Theses and Dissertations
Wearable nanocomposite strain sensors are a promising technological advancement for real-time monitoring of human biomechanics. However, characterization of these sensors for biomechanical use can be complex due to factors such as creep-related resistance drift and environmental influence (humidity and temperature). The purpose of this work is to investigate and quantify these factors as well as seek to mitigate their effects. The first portion of this thesis is a study on creep-related drift of the electrical behavior of the sensors, investigating the impact of material cure levels and application of a compressive prestrain in ameliorating the observed drift. DSC testing of …
The Connection Between Linguistic Insecurity And Cultural Identity In Spanish Heritage Language Learners, Sara Nicole Gardner
The Connection Between Linguistic Insecurity And Cultural Identity In Spanish Heritage Language Learners, Sara Nicole Gardner
Theses and Dissertations
The United States is a host to several ethnicities that bring both their own languages and their own culture to an already large mixing pot. The children of the immigrants who grow up learning both English and their families' heritage language are called heritage language learners (HLLs). The first objective of the study was to find out whether foreign language anxiety had a relationship with reading and writing in Spanish for HLLs in high school. The second was to ascertain whether perception of ethnic identity also had a relationship with reading and writing in Spanish for heritage language learners in …
Spatiotemporal Variation Of Alfalfa Leaf Area Index And Crop Water Productivity In An Irrigated Alfalfa Field, Keegan Dillon Hammond
Spatiotemporal Variation Of Alfalfa Leaf Area Index And Crop Water Productivity In An Irrigated Alfalfa Field, Keegan Dillon Hammond
Theses and Dissertations
Throughout the world, there continues to be increasing demand for freshwater resources. With urban expansion, increased demand from a growing population, drought, and climate change, growers must produce more crops using less water. One approach to water conservation is with a variable rate irrigation (VRI) system. VRI technology allows growers to irrigate crops according to site-specific within-field variation instead of a uniform rate across the field. This thesis addresses aspects of within-field variation of irrigated alfalfa as it relates to the potential for VRI. Chapter 1 examines measurement of within-field variation of leaf area index (LAI) to inform variable-rate irrigation …
Investigating How And Why Students Pay Attention And Engage In A High School German Level One Class, Lindsey Marie Nielson
Investigating How And Why Students Pay Attention And Engage In A High School German Level One Class, Lindsey Marie Nielson
Theses and Dissertations
This qualitative study investigates how and why students pay attention and engage in a German Level One class in a public high school in Utah. Data were collected from surveys, classroom observations, video/audio recordings, and interviews. Findings indicate that three major factors influenced student engagement during this study-type of motivation (extrinsic or intrinsic), type of learning activity (individual, partner, or class), and the mode of activity (technology, paper, or speaking). Additional findings offer support for the idea that metacognition may enhance language learning.
Improved Endmember Mixing Analysis (Emma): Application To A Nested Catchment, Provo River, Northern Utah, Alyssa Nicole Thompson
Improved Endmember Mixing Analysis (Emma): Application To A Nested Catchment, Provo River, Northern Utah, Alyssa Nicole Thompson
Theses and Dissertations
An endmember mixing analysis (EMMA) is a hydrograph separation technique used to identify and quantify stream source contributions, but the error within the results of the analysis itself can be difficult to quantify. Employing EMMA to accurately quantify these contributions is particularly important for critical watersheds that supply water to large populations, such as montane watersheds. We applied EMMA to the Provo River, a nested catchment with three monitoring locations in northern Utah, to understand the limitations and potential improvements that could be made to EMMA. Four main endmembers (quartzite groundwater, soil water, snow and carbonate groundwater) were identified for …
Enhancing Local Hydrological Services With The Geoglows Ecmwf Global Hydrologic Model, Jorge Luis Sanchez Lozano
Enhancing Local Hydrological Services With The Geoglows Ecmwf Global Hydrologic Model, Jorge Luis Sanchez Lozano
Theses and Dissertations
Global hydrological models can fill crucial gaps for providing essential information on water resources management, flood and drought forecasting, and assessing the impacts of climate change. However, these models face several challenges that must be addressed to ensure their applicability at local scales. These challenges include effectively managing Big Data, proper communication, adoption, and achieving accuracy in their results. Achieving accuracy in global hydrological models is critical for acceptance in decision-making, but poses the most significant challenge due to the extensive amount of observed data required and the complexity of obtaining and preparing such data for model evaluation. In this …
Full Issue
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
No abstract provided.
Farms News
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
It is exciting to read the mail and feel the enthusiasm participants have for FARMS projects. Here are examples of recent comments.
Director's Message
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
Cooperation. The Foundation has seen a lot of it in the lase three months, from many sides! And the results are rewarding to all, as this issue of the Newsletter should show. We are more efficient, thanks to institutional cooperation from Brigham Young University . We are broader based, thanks to cooperation from the Church Educational System and BYU's Campus Education Week. We are more productive, thanks to new volunteers. We can plan more confidently, thanks to generous gifts and pledges. We continue to discover, without surprise, that there is something for everyone to do.
Full Issue
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
No abstract provided.
Videos Available In Pal
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
For a nominal charge of $1.50 above the regular price, any FARMS video can be converted into PAL format. Simply indicate on any FARMS order form your desire to have the PAL format, or call the FARMS office. We hope that this service makes FARMS videos more useful to subscribers around the world.
Thirteen Is Lucky For The Farms Review Of Books
Thirteen Is Lucky For The Farms Review Of Books
Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship
For the thirteenth time, FARMS has invited reviewers to examine books about the Book of Mormon, other scriptures, and related topics. The latest issue of the FARMS Review of Books (volume 9, number 2) covers eight books about the Book of Mormon and eight books on other topics. It also contains an editor's introduction that raises serious and stimulating questions about weaknesses in the methods of contemporary biblical scholarship.
Real-Time Spatial Interference Removal And Maximum Ratio Combining In Communication Systems, Adam Gary Whipple
Real-Time Spatial Interference Removal And Maximum Ratio Combining In Communication Systems, Adam Gary Whipple
Theses and Dissertations
Radio frequency interference (RFI) is undesired and commonplace. Using a subspace projection method to spatially remove the interference from a phased array system gives results of a 30 dB interference null rejection (INR). Unmanned systems have been developed to observe underwater activity and communicate their observations to passing aircraft. These systems are currently limited by their use of a single transmitter. The uplink can be improved by using a dual-antenna beam steering approach to maximize the signal-to-noise ratio (SNR) the aircraft receives. This approach demonstrates an increase in SNR of 3 dB when compared to a single transmitter.
Numerical Evaluation Of Forces Affecting Particle Motion In Time-Invariant Pressurized Jet Flow, Donald E. Peterson
Numerical Evaluation Of Forces Affecting Particle Motion In Time-Invariant Pressurized Jet Flow, Donald E. Peterson
Theses and Dissertations
This work evaluates the relative significance of forces determining the motion of a pulverized coal particle under conditions representative of a pressurized oxy-coal combustor. The gravity force and surface forces of drag, fluid stress, added mass, and Basset history are discussed and appropriate forms of these force equations are chosen, with a consideration of spherical and non-spherical drag and the Basset history kernel. Studies from the literature that emphasize specific forces are used to validate the implementation of the force equations and correlations. Modeling is based on time-averaged, one-dimensional motion of a single non-reacting particle along the centerline of a …
The Acceptability Of Relationship-Centered Communication Partner Training For Couples Impacted By Aphasia: A Mixed Methods Pilot Study, Kathryn-Anne Pertab
The Acceptability Of Relationship-Centered Communication Partner Training For Couples Impacted By Aphasia: A Mixed Methods Pilot Study, Kathryn-Anne Pertab
Theses and Dissertations
This study explored the acceptability of Relationship-Centered Communication Partner Training (RC-CPT) for couples impacted by aphasia. Three couples participated in the program across two sessions. Surveys were administered to assess outcome measures of their marital relationship and communication confidence before and after participation in RC-CPT. The quantitative findings were analyzed using descriptive statistics. Overall, participants generally maintained or experienced improvements in accessibility, responsiveness, engagement, conflict, conflict resolution, and communication within their marriage after participating in RC-CPT. Additionally, individuals with aphasia demonstrated enhanced communication confidence scores. During the third session, couples completed a semi-structured interview to share their experiences with the …