Digital Commons Network^™

Intelligent Indexing: A Semi-Automated, Trainable System For Field Labeling, Robert T. Clawson

Theses and Dissertations

We present Intelligent Indexing: a general, scalable, collaborative approach to indexing and transcription of non-machine-readable documents that exploits visual consensus and group labeling while harnessing human recognition and domain expertise. In our system, indexers work directly on the page, and with minimal context switching can navigate the page, enter labels, and interact with the recognition engine. Interaction with the recognition engine occurs through preview windows that allow the indexer to quickly verify and correct recommendations. This interaction is far superior to conventional, tedious, inefficient post-correction and editing. Intelligent Indexing is a trainable system that improves over time and can provide …

Piv Measurements Of Turbulent Flow In A Rectangular Channel Over Superhydrophobic Surfaces With Riblets, Richard Mark Perkins

Theses and Dissertations

In this thesis I investigate characteristics of turbulent flow in a channel where one of the walls has riblets, superhydrophobic microribs, or a hybrid surface with traditional riblets built on a superhydrophobic microrib surface. PIV measurements are used to find the velocity profile, the turbulent statistics, and shear stress profile in the rectangular channel with one wall having a structured test surface. Both riblets and superhydrophobic surfaces can each provide a reduction in the wall shear stress in a turbulent channel flow. Characterizing the features of the flow using particle image velocimetry (PIV) is the focus of this research. Superhydrophobicity …

A Simple Solution Method For The Blade Element Momentum Equations With Guaranteed Convergence, Andrew Ning

Faculty Publications

The blade element momentum equations, though conceptually simple, can be challenging to solve reliably and efficiently with high precision. These requirements are particularly important for efficient rotor blade optimization that utilizes gradient-based algorithms. Many solution approaches exist for numerically converging the axial and tangential induction factors. These methods all generally suffer from a lack of robustness in some regions of the rotor blade design space, or require significantly increased complexity to promote convergence. The approach described here allows for the blade element momentum equations to be parameterized by one variable: the local inflow angle. This reduction is mathematically equivalent, but …

Simple, Label-Free And Non-Instrumented Analyte Quantitation By Flow Distance Measurement In Microfluidic Devices, Debolina Chatterjee

Theses and Dissertations

Rapid determination of the concentrations of molecules related to diseases can provide timely information for treatment options. However, most biomarker quantitation methods require costly and complex equipment. On the other hand, point-of-care systems have less complex instrumentation needs than laboratory-based equipment, but often provide less information; for example, biomarker presence or absence instead of concentration. A complete analysis setup addressing key limitations of both laboratory-based and portable systems is highly desirable. I developed microfluidic devices with visual inspection readout of a target’s concentration from microliter volumes of solution flowed into a microchannel. Microchannels are formed within polydimethylsiloxane (PDMS), and the …

Browser-Based Manual Encryption, Yuanzheng Song

Theses and Dissertations

Billions of web-based email and chat messages are sent over the Internet every day. However, very few service providers support end-to-end privacy protection. While providing security for these messages is technically feasible, usability remains a challenge in this field. Recent research attempts to hide security details like key management and encryption in order to make the system more usable. However usability studies demonstrated that hiding these details may confuse the user and contribute to mistakes (e.g., sending out an email in plaintext when the user thought it would be encrypted). In an effort to increase trust and eliminate mistakes, this …

Applied Mathematics And Geophysical Fluid Dynamics, Jared P. Whitehead

BYU Research Development Office Research Networking Conference

Variational Bounds on Turbulent Quantities: Rayleigh-Benard Convection; and, Asymptotic limits of rapid rotation and strong stratification: climate and weather.

Leadership In Mentoring, Denise M. Halverson

BYU Research Development Office Research Networking Conference

What is leadership and why implement leadership practices in mentoring.

Byu Math: Acme, Jared Anthony Webb

BYU Research Development Office Research Networking Conference

Skill sets of ACME students, ACME Model, and Probability and Data science

Measuring Molecular Size, Shape, & Mass With Fourier Transform Mass Spectrometry, David Dearden

BYU Research Development Office Research Networking Conference

Areas of Interest:

Fourier transform mass spectrometry; Ion mobility; Molecular

recognition; Supramolecular chemistry, especially of

cucurbit[n]urils; Molecular machines

Research Interests Of Kevin Franke, Kevin Franke

BYU Research Development Office Research Networking Conference

Research interests: Geotechnical Earthquake Engineering and Unmanned Aerial Vehicles

Isospectral Network Transformations, Ben Webb

BYU Research Development Office Research Networking Conference

Areas of Interest: Dynamical Systems & Applications; Dynamics of Networks; Particle Dynamics on Lattices; and, Spectral Estimates & Dynamics

Synthesis Of 4'-Ester Resveratrol Analogues, Chromium Trioxide Oxidation Of Terpenes, And Synthesis Of Mimics Of (-)-Englerin A, Mark Jeffrey Acerson

Theses and Dissertations

4’ -ester analogues of resveratrol were synthesized using reaction conditions developed to produce mono-ester products in the presence of two other unprotected phenols. Basic conditions were employed to deprotonate the most acidic 4’ phenol followed by addition of anhydrides or acid chlorides to give the ester product. The reaction favored 4’-ester formation in polar aprotic solvents with DMSO being the optimal solvent.

(—)-Englerin A is a guaiane-type sesquiterpene containing two ester side chains. Mimics of (—)-englerin A were proposed that retained the ester side chains while replacing the non-polar core with less complicated structures. These proposed mimic cores would maintain …

Faculty-Student Interaction And The Educational Outcomes Of Native American College Students: A Comparison Of First-Generation And Continuing-Generation College Students, Natasha Marilyn Gillette

Theses and Dissertations

Utilizing the College Student Experiences Questionnaire(CSEQ), a regression analysis was run to identify the ways in which 95 Native American college students attending an elite,religious, predominantly White institution (PWI)interact with faculty. These interactions were used to predict correlations with the educational outcomes of (1) aspirations for graduate school, (2) GPA and (3) overall gains from college. The findings were further disaggregated by first-generation and continuing-generation status. The findings suggest that none of the faculty-student interactions or demographic variables were significantly correlated with aspirations for graduate school. Gender, class standing and age were significantly correlated with GPA. A better relationship with …

Communicating Affective Meaning From Software To Wetware Through The Medium Of Digital Art, R David Norton

Theses and Dissertations

Computational creativity is a new and developing field of artificial intelligence concerned with computational systems that either autonomously produce original and functional products, or that augment the ability of humans to do so. As the role of computers in our daily lives is continuing to expand, the need for such systems is becoming increasingly important. We introduce and document the development of a new “creative” system, called DARCI (Digital ARtist Communicating Intention), that is designed to autonomously create novel artistic images that convey linguistic concepts to the viewer. Within the scope of this work, the system becomes capable of creating …

Conflict Management And Model Consistency In Multi-User Cad, Ammon Ikaika Hepworth

Theses and Dissertations

The NSF Center for e-Design, Brigham Young University (BYU) site has re-architected Computer Aided Design (CAD) tools, enabling multiple users to concurrently create, modify and view the same CAD part or assembly. This technology allows engineers, designers and manufacturing personnel to simultaneously contribute to the design of a part or assembly in real time,enabling parallel work environments within the CAD system. Multi-user systems are only as robust and efficient as their methods for managing conflicts and preserving model consistency. Conflicts occur in multi-user CAD when multiple users interoperate with the same or dependent geometry. Some conflicts can lead to model …

Build-And-Fill Development Of Lower Ismay (Middle Pennsylvanian Paradox Formation) Phylloid-Algal Mounds Of The Paradox Basin, Southeastern Utah, Lincoln H. Reed

Theses and Dissertations

Phylloid-algal mounds form heterogeneous hydrocarbon reservoirs in the southeastern portion (Blanding sub-basin) of the Paradox Basin. Well-studied Lower Ismay mounds exposed along walls of the San Juan River gorge in the vicinity of Eight Foot Rapids, the west limb of the Raplee Anticline, and at the classic Honaker Trail locality (southwestern Paradox Basin) have often been cited as outcrop analogs of productive subsurface mounds. Until now, however, there has not been a complete description of the distribution, size, and spacing of outcropping algal mounds at the classic Eight Foot Rapids locality. The Lower Ismay sequence was analyzed in the context …

System Identification Of An Unmanned Tailsitter Aircraft, Nathan W. Edwards

Theses and Dissertations

The motivation for this research is the need to improve performance of the autonomous flight of a tailsitter UAV. Tailsitter aircraft combine the hovering and vertical take-off and landing capability of a rotorcraft with the long endurance flight capability of a fixed-wing aircraft. The particular aircraft used in this research is the V-Bat, a tailsitter UAV with a conventional wing and the propeller and control surfaces located within a ducted-fan tail assembly. This research focuses on identifying the models and parameters of the V-Bat in hover and level flight as a basis for the design of the control systems for …

High-Performance Polymer Monoliths For Capillary Liquid Chromatography, Pankaj Aggarwal

Theses and Dissertations

This dissertation focuses on improving the chromatographic efficiency of polymeric organic monoliths by characterizing and optimizing the bed morphology. In-situ characterization techniques such as capillary flow porometry (CFP), 3-dimensional scanning electron microscopy (3D SEM) and conductivity measurements were developed and implemented to quantitatively characterize the morphology of poly(ethylene glycol) diacrylate (PEGDA) monoliths. The CFP measurements for monoliths prepared by the same procedure in capillaries with different diameters (i.e., 75, 150, and 250 μm) clearly showed a change in average through-pore size with capillary diameter, thus, certifying the need for in-situ measurement techniques. Serial sectioning and imaging of PEGDA monoliths using …

Transposing Noninvertible Polynomials, Nathan Cordner

Library Research Grants

In the class of invertible polynomials, the notion of dual polynomials W and W^T, as well as dual groups G and G^T is well-understood. In this paper we investigate finding dual pairs W and W^T for noninvertible polynomials. We find that in many instances, our intuition that stems from invertible polynomials does not extend to the noninvertible case.

Reestablishing The Locale Of California's First American-Designated Place Name On Santa Catalina Island, Ivan H. Strudwick

Monographs of the Western North American Naturalist

From 1801 to late 1803, captains and co-owners of the Lelia Byrd, William Shaler of Boston and Richard J. Cleveland of Salem, Massachusetts, voyaged to the west coast of North America where they traded for sea otter fur that they then sold in Canton, China. They traveled to the Hawaiian Islands and made a gift of horses, the first in Hawaii, to King Kamehameha I, “the Great.” During 1804–1805, Shaler sailed back to the California coast to continue trading while Cleveland sailed to Boston. Shaler’s narrative of the 1804–1805 voyage is the earliest, most extensive account of California written …

Using A Model Of Temporal Latency To Improve Supervisory Control Of Human-Robot Teams, Kyle Lee Blatter

Theses and Dissertations

When humans and remote robots work together on a team, the robots always interact with a human supervisor, even if the interaction is limited to occasional reports. Distracting a human with robotic interactions doesn't pose a problem so long as the inclusion of robots increases the team's overall effectiveness. Unfortunately, increasing the supervisor's cognitive load may decrease the team's sustainable performance to the point where robotic agents are more a liability than an asset. Present approaches resolve this problem with adaptive autonomy, where a robot changes its level of autonomy based on the supervisor's cognitive load. This thesis proposes to …

Elementary School Teachers' Perceptions Of And Use Of Behavior-Specific Written Praise Notes For Children Identified With Office Discipline Referrals, Danielle C. Agle

Theses and Dissertations

Student behavior problems in school and classroom settings are of great concern to parents, teachers, and school administrators. These behaviors range from talking out and noncompliance to more serious behaviors such as violence and vandalism. Effectively managing student behavior problems lays the foundation for creating a safe school environment and is a critical concern for all teachers. A school wide positive behavior intervention and support system (PBIS) is an effective and proactive way to prevent misbehavior. All teachers and staff teach and reinforce a specified set of positive behaviors. These positive behaviors are expected of each student. This study analyzed …

Verifying Molecular Dynamics Using Dielectric Spectroscopy, Joshua Dee Smith

Theses and Dissertations

The electrical properties of proteins in solution are important for their structure and function. Computational biophysics studies of proteins need accurate parameters to ensure that numerical simulations match physical reality. Past work in this eld has compared the electrical properties of proteins obtained from dielectric spectroscopy to numerical simulations of proteins in water with adjustment of pKa values to try to capture the inevitable changes in electrical conformation that will occur in a complex structure such as a folded protein. However, fundamental veri cation of the charge parameters of the amino acid building blocks in common molecular dynamics software packages …

Examining Academic Performance Of Polynesian Student-Athletes Using The Theory Of Planned Behavior, Sierra Terina Keung

Theses and Dissertations

This study used Ajzen's (1991) Theory of Planned Behavior (TPB) to explore Polynesian student-athletes' motivation to improve academic performance (AP), while participating in Division I (D1) college football. Specifically, this study examined how attitude, subjective norms and perceived behavioral control influence motivation to achieve a higher GPA. Furthermore, ethnic identity, family obligation and cultural values were examined as potential contributors to subjective norms. The sample consisted of 70 Polynesian football student-athletes at 10 U.S. D1 universities. A modified TPB questionnaire was used to assess the TPB variables (attitude, subjective norms, and perceived behavioral control) as contributors to Polynesian football student-athletes …

Secondary Dormancy And Summer Conditions Influence Outcomes In The Pyrenophora Semeniperda - Bromus Tectorum Pathosystem, Katie Karen Hawkins

Theses and Dissertations

Variable mortality of Pyrenophora semeniperda–infected Bromus tectorum seeds has been referred to as a “race for survival.” Dormant seeds are highly susceptible to P. semeniperda infection. While much is known about primary dormancy little is known about secondary dormancy in B. tectorum seeds. Dormancy status is not the only variable determining outcomes within the Bromus - Pyrenophora pathosystem. Varying temperature and intermittent hydration may strongly influence germination outcomes of B. tectorum in the presence of P. semeniperda. While it has long been assumed that B. tectorum seeds are infected by P. semeniperda in the fall it was recently suggested that …

Online Student Discussions In A Blended Learning Classroom: Reconciling Conflicts Between A Flipped Instruction Model And Reform-Based Mathematics, Lewis L. Young

Theses and Dissertations

Two ideas are prevalent in teacher professional development today. Teachers are finding new and innovative ways to incorporate technology into their classroom. The use of video and social media is increasing. One type of pedagogy that has emerged among the blended learning pedagogies is flipped instruction, where students participate in some of the instruction outside of the classroom. Another prevalent idea is the focus on inquiry learning and reform-based mathematics instruction. This pedagogy adheres to the idea that students can use their problem solving skills to understand complex mathematics. This qualitative content analysis outlines how one researcher sought to find …

A Model For Analyzing Heating And Cooling Demand For Atria Between Tall Buildings, Samuel David Christensen

Theses and Dissertations

The heating and air-conditioning energy demand of skyscrapers with atria between buildings is explored. Radiation, conduction, convection, and ventilation were evaluated to determine annual heating and cooling energy demands for a 100-building city located in Provo, Utah. Spreadsheets models were developed and calibrated with a computational fluid dynamics model. Three spreadsheet model cases were examined: a baseline no-atrium case, a conditioned atrium case, and an unconditioned atrium case. The energy demands and atrium temperatures were compared between the different cases. The research concludes that atria can be used between buildings to reduce the heating and cooling energy demands. The exposed …

Products, Practices, And Perspectives In The World Language Classroom: A Unit On Mexican Food For A High School Spanish 1 Class, M. Susy Bird

Theses and Dissertations

This thesis project for a Master of Arts in Spanish Pedagogy consists of a four-week, five- lesson unit on Mexican food designed for a high school Spanish 1 class. Following an overview of the need for more cultural products, practices, and perspectives in the teaching of world languages, the project outlines the learning objectives and assessments for the unit and describes its implementation in a high school Spanish classroom, followed by an analysis of learning outcomes and a discussion of which components of the unit went well along with suggestions for improvement. The actual lesson plans are included as appendices.

Story Generation Ability In Four Children With Language Impairment, Monica Leroy Chamberlain

Theses and Dissertations

This thesis project focused on the complexity of story generations produced by four children with language impairment across treatment sessions. Specifically, the participants' utterances were analyzed to determine if the children produced simple story elements and/or more complex cause/effect story elements. The children's utterances were also analyzed to identify emotion words in order to consider the children's awareness of the emotions experienced by characters in the stories. All participants approached the story generation task by describing characters and actions based on pictures from the book. Two participants did not express any causal relationships and two participants expressed some awareness of …

Investigating The One-On-One Master-Apprentice Relationship: A Case Study In Traditional Craft Apprenticeship, Isaac W. Calvert

Theses and Dissertations

Governments around the world are calling for a revival of apprenticeship on a large scale, emphasizing the value of the one-on-one, human interaction between master and apprentice and the teaching involved in that interaction. Although a broader historical view of apprenticeship shares these ideas, certain prominent threads within recent educational research have done a great deal to deemphasize them. Some go so far as to overlook the master-apprentice relationship altogether, assert that masters simply do not exist, and claim that apprenticeship learning happens without any teaching at all. In response to these claims, the researcher took part in an autoethnographic …