Digital Commons Network^™

Learning Chinese Writing: An App Design Concept For Multi-Touch Devices, Xi Zong

Theses

An app design concept to learn Chinese writing for multi-touch mobile & tablet devices

Mandarin can be divided into spoken Chinese and written Chinese. Many people who are taking Mandarin courses were first attracted to the Chinese language because of the writing system, which is considered one of the most complex in the world.

Chinese writing is considered difficult because of the enormous number of characters one has to learn. Mandarin is difficult in comparison to Spanish, Greek, Russian, Hindi, or any other language that requires at most a few dozen symbols to write in the language.

This Chinese writing …

Visualization Of Mind: Visual Exploration Of Brain Activity, Bilegsaikhan Baasanjav

Theses

Since ancient times, philosophical and religious thinkers have made attempts to understand the nature of the mind. Today, new developments in technology enable scientists and researchers to explore the brain’s complex physical activity, revealing a deeper mental reality. Moreover, the emergence of low-cost biometric devices gives nonscientific communities an ability to explore usage of biometric data in variety of ways.

This project explores visualization of human brain activity using electroencephalogram neural interface to create a visually engaging and meaningful user experience. The implementation of the project takes a form of an interactive installation. It projects the visual form, whose visual …

Placental ‘€˜Omics’€™ Study To Understand The Pathogenesis Of Preeclampsia, Komal Kedia

Theses and Dissertations

Preeclampsia (PE) is a potentially fatal complication of pregnancy characterized by an increase in blood pressure (>140/90 mmHg) and proteinuria (>300 mg/24 hrs), often accompanied by edema. Symptoms of PE start after 20 weeks of gestation. If PE remains untreated, it can lead to eclampsia, grand-mal seizures responsible for most fatalities. PE is believed to affect 2-10% of pregnancies worldwide, and claims the lives of over 75,000 mothers and 500,000 newborns yearly. No therapeutic agents have been developed to prevent or cure PE. Part of the reason for this is the absence of a complete understanding of the …

Visual Approach And Design: The Appropriate Characteristics Of Instructional Photos As A Tool To Support Elementary Setting In Kuwait, Ali Buhamad

Dissertations

This study provided a guide for appropriate characteristics of Instructional Photo to be used by teachers, trainers, coaches, instructors, and anyone else who desires to deliver knowledge and present content with visual meaning to elementary students in the state of Kuwait as a teaching style that supports teachers, facilitates clarification, and gets the learners’ attention and motivates them. This study used a basic qualitative method. The participants in this study were two teachers and two photography artists from Kuwait who had at least 10 years of experience in both fields and were selected from researcher relationships. The data collection was …

Mathematical Teachers’ Perception: Mobile Learning And Constructing 21st Century Collaborative Cloud-Computing Environments In Elementary Public Schools In The State Of Kuwait, Nadeyah Alqallaf

Dissertations

The purpose of this study was to examine Kuwaiti mathematical elementary teachers’ perceptions about their ability to integrate M-learning (mobile learning) into their current teaching practices and the major barriers hindering teachers’ ability to create an M-learning environment. Furthermore, this study sought to understand teachers’ perceptions about their ability to create a collaborative cloud-computing learning environment that corresponds with the 21st century skills and possibly explain their readiness for future reformation of education in Kuwait. Using an Internet-based format to this study quantitative and qualitative data, the Technological Pedagogical Content Knowledge (TPACK) and barriers survey gleaned quantitative information about how …

Evaluation Of Students' Interest, Effort Beliefs, And Self-Efficacy In General Chemistry, Brent Ferrell

Dissertations

The research described in this dissertation is outlined in three phases and is focused on the measurement, interrelationships, and understanding of self-efficacy, interest, and effort beliefs among general chemistry students. The primary drive behind this research was to provide measurement tools to chemistry education researchers and practitioners as a way to evaluate novel and alternative teaching strategies and interventions. The first phase of this study involved gathering evidence for validity and reliability of four previously published scales that measured initial interest, maintained interest, self-efficacy, and effort beliefs. These scales were taken from other disciplines, with the exception of the self-efficacy …

A Comparative Approach To Question Answering Systems, Josue Balandrano Coronel

Theses and Dissertations

In this paper I will analyze three different algorithms and approaches to implement Question Answering Systems (QA-Systems). I will analyze the efficiency, strengths, and weaknesses of multiple algorithms by explaining them in detail and comparing them with each other. The overarching aim of this thesis is to explore ideas that can be used to create a truly open context QA-System. Open context QA-Systems remain an open problem.

The various algorithms and approaches presented in this work will be focused on complex questions. Complex questions are usually verbose and the context of the question is equally important to answer the query …

Elementary Educators' Perspective Of Physical Education And The Physical Education Teacher, Jennifer M. Garcia

Theses and Dissertations

Physical education continues to have the reputation it has had for years of being a subject of marginalization and of least importance in the school curriculum. The purpose of this study is to gain a better understanding of the perceptions of educators of physical education and the physical education teacher in the Rio Grande Valley. The researcher attempts to find, understand, and describe the perceptions of the educator’s view of this subject matter. Statistical significance was set at the .05 level for both tests of analyses. The researcher offers the null hypothesis of no difference between educator’s perception of PE …

The Relationship Between Entity Beliefs And Socioeconomic Status-Based Rejection Sensitivity: Academic Achievement In A Predominantly Hispanic Sample, Anna Kushner

Theses and Dissertations

Previous research has shown that entity beliefs can moderate or buffer the impact of class-based rejection sensitivity on expected and official grade point averages of low-income college students. This study attempted to replicate previous research, which found that class-based rejection sensitivity (RS-class) and entity beliefs had negative main effects on academic outcomes (grade point average), and that entity beliefs served as a moderator in the relationship between RS-class and academic outcomes. While the predicted relationships were not replicated, this study found that higher acculturation scores are related to greater levels of academic achievement as measured by GPA. This attempted replication …

Global Entropy Based Greedy Algorithm For Discretization, Sai Jyothsna Jonnalagadda

Theses and Dissertations

Discretization algorithm is a crucial step to not only achieve summarization of continuous attributes but also better performance in classification that requires discrete values as input. In this thesis, I propose a supervised discretization method, Global Entropy Based Greedy algorithm, which is based on the Information Entropy Minimization. Experimental results show that the proposed method outperforms state of the art methods with well-known benchmarking datasets. To further improve the proposed method, a new approach for stop criterion that is based on the change rate of entropy was also explored. From the experimental analysis, it is noticed that the threshold based …

Lie Symmetry To Nonlinear Oscillator Systems And Applications, Xiaoyan Li

Theses and Dissertations

In this paper, we apply the theory of Lie symmetry to study a generalized second-order nonlinear differential equation, which includes several physical nonlinear oscillators such as force-free Helmholtz oscillator, force-free Duffing and Duffing-van der Pol oscillators, modified Emden-type equation and its hierarchy etc, and investigate the dynamical properties of this rather general equation. We identify and classify several new integrable cases for arbitrary values of exponents, which determine the tangent vector as well as the infinitesimal generator. Using the Lie point symmetry, we find the useful infinitesimal generators and canonical coordinates, and obtain the first integrals of the second-order nonlinear …

On Hypergroups Of Order At Most 6, Jordy C. Lopez

Theses and Dissertations

This thesis surveys recent results on hypergroups as defined by Frédéric Marty in [3] and [4] and their relation to association schemes as presented in [5]. We show that every association scheme is a hypergroup. Then, we compile a few general results on hypergroups needed for our investigation of hypergroups with three, four and six elements. From [1] and [7], we give examples of hypergroups that do not come from finite schemes and from no scheme at all. Our main result occurs when considering hypergroups S with six elements that have a non-normal closed subset T of order 2 with …

Development Of A Phased Array Using Lnbs With Non-Synchronized Clocks, James I. Murray

Theses and Dissertations

A passive phased array is an array of antennas in which the phases of the signals on each element are controlled to be added to form a spatial beam. The advantage is that one can steer the beam without physically moving the constituent elements as well as create multiple beams on the sky simultaneously. This has application in the field of satellite and spacecraft communications where there is expected to be a large increase in satellite volume due to the increasing access to space. Traditional phased arrays can become costly to synchronize at satellite down-link frequencies, therefore we have built …

Identification Of Synthetic Chemical Compound Inhibitors Of Pseudomonas Aeruginosa Protein Synthesis And The Development Of Lead Series, Stephanie O. Palmer

Theses and Dissertations

Pseudomonas aeruginosa is a ubiquitous Gram-negative bacteria and a primary cause of nosocomial infections. An aminoacylation/translation (A/T) assay was developed using P. aeruginosa components to perform poly(U) mRNA directed protein synthesis. Using scintillation proximity assay (SPA) technology a high-throughput screening (HTS) platform was developed. A synthetic chemical compound library (>900) was screened, 36 hit compounds were identified and molecular targets were determined. Compounds were analyzed for enzymatic inhibition (IC50) and inhibition of bacterial cultures (MIC). Time-kill studies determined bacterial growth to be bacteriostatic or bactericidal in the presence of inhibitor. Mechanism of action, effects on eukaryotic cytosolic and mitochondrial …

Molecular Dynamic Simulation Studies Of The Androgen Receptor Complexed With 5Α-Dihydrotestosterone And An Allosteric Ligand, Everardo Villarreal Ii

Theses and Dissertations

Receptors are important drug targets for the pharmaceutical industry, since they are involved in many illnesses. Nuclear receptors are a subset of receptors that control a variety of physiological events, by expression of genes from DNA. One of the nuclear receptors, the androgen receptor, is a steroid binding receptor that controls a variety of regulatory and development functions in the body. It is also the cause of some types of cancer, so the inhibition of this receptor is crucial. One of the processes studied to inhibit the function of the receptor is to see if an allosteric ligand, TRIAC, can …

Analysis And Simulation Of A Social Network, Twitter: A Case Study, Jonatan Reyes

Theses and Dissertations

The use of online social networks empowers its users to efficiently disseminate information across traditional social networks. Typically, the weight and value of messages are relative to its readers’ culture and interests. Nevertheless, in some instances, messages take the form of viral phenomenon, which circulates around the world in very short periods of time. Therefore, despite the actual content of the message spread over the network, the determination of the effectiveness of message dissemination across the social network becomes an attractive opportunity for scientific study. Since a meticulous analysis of a complete online social network would require the acquisition of …

Hydrodesulfurization Of Dibenzothiophene Using Comos2, Jacob S. Sollner

Theses and Dissertations

The hydrodesulphurization (HDS) of crude oils is an important industrial process to remove sulfur from fuels. In this study, DBT was used as a model compound to study the removal of sulfur from a decahydronaphthalene solution. The catalyst was synthesized through low pressure pathways in the absence of H2S. All the synthesized catalyst were investigated using a combination of SEM, RAMAN spectroscopy, and XRD. The materials were studied for their ability to remove DBT from solution and the reaction products were analyzed. It was observed that the major reaction pathway was the direct desulphurization pathway and zero order reaction kinetics …

Optimizing Dam Siting In The Paru River In Brazil Using A Multi-Objective Approach, Henrique De Paula

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

How should a decision-maker choose which hydropower plant to build in a given river? Hydropower plant expansion is a task that involves several stakeholders, objectives, and resources. It requires that decision-makers use not only experience and previous knowledge to come up with their final decision, but also the use of tools to help them to decide, as well as to support their choices. The present project developed a computation model to optimize the choice of hydropower plants that can be built within a given river, considering three different objectives - energy generation, flooded surface area and river connectivity. The input …

Numerical Development And Optimization Of A Phase Change Material Solar Thermal Storage Unit System Model, Jared Tower

Master's Theses

In this work, the feasibility of a phase change material (PCM) thermal storage unit is determined, and the design is then optimized to minimize the time it takes for the PCM to completely melt. The PCM provides a large energy density due to its characteristically large heat of fusion, but has a low thermal conductivity, leading to slow transient responses. Thus, a heatsink is employed to increase the melt rate. The heatsink is analyzed using three different methods to determine which method provides the best results in the least amount of time. First, SolidWorks’ simulation tool with a variable specific …

Optimization Of Rfid System Coverage In A Manufacturing Environment, Scott D. Malatesta

Master's Theses

This paper compiles existing ideas, theories, and experiments across multiple disciplines to provide guidance for a company looking to implement an optimal RFID system in their production facility. The desire is to maximize the information received by the system while minimizing the cost. Four potential layouts of RFID antennas, two with overlapping antenna coverage and two with non-overlapping layouts, are first analyzed to understand the special coverage and the number of antennas required. The value of information is then quantified to determine whether higher coverage layouts are worth the additional costs associated with the higher number of antennas required. It …

Supplemental Action Learning Workshops: Understanding The Effects Of Independent And Cooperative Workshops On Students’ Knowledge, Kathryn M. Morris

Dissertations

Community colleges enroll more than half of the undergraduate population in the United States, thereby retaining students of varying demographics with extracurricular demands differing from traditional four-year university students. Often in a collegiate lecture course, students are limited in their abilities to absorb and process information presented by their instructors due to content-specific cognitive gaps between the instructor and the student (Preszler, 2009). Research has shown implementation of instructor-facilitated action learning workshops as supplemental instruction may help bridge these cognitive gaps allowing better student conceptualization and dissemination of knowledge (Drake, 2001; Fullilove & Treisman, 1990; Preszler, 2009; Udovick et al., …

Synthesis And Application Of (R)-3-Methylpyrrolidine-3-Carboylic Acid, Shelby D. Dickerson

Honors Theses

L-Proline is an amino acid widely used in pharmaceutical and biotechnological research due to its catalytic activity and biological relevance. L-Proline has been recognized and utilized as an organocatalyst, which allows cleaner, more sustainable reactions. However, one issue with L-proline is its low solubility in organic systems, limiting its reactivity and efficiency, especially when considering industrial research. Two reactions that utilize L-Proline are the Michael and Aldol but require 100 mol% of L-Proline and 30 mol% of L-Proline, respectively. This research will focus on the synthesis of an analogue of L-Proline utilizing inexpensive, commercially available reagents. A variety of organic …

Energy Management Mechanisms Employed At The Human-Material Interface Of Traditional And Minimalist Shod Running, Nadine M. Lippa

Dissertations

From recreational to elite athletes, greater than 50% of runners sustain overuse injuries each year, prompting substantial research efforts to identify causes of—and solutions to—the high injury rate. Different shoe types and material property degradation have been related to injury. Two popular footwear types are traditional shoes with thick graded soles and minimalist running footwear with thinner foam and/or non-graded soles. Notwithstanding 45 years of significant modifications to shoe design features, gained knowledge in kinesiology, and advanced technologies in polymer science, runner injury rates have not decreased and EVA foam has remained the primary running shoe midsole material since the …

Not Created Equal: The Effectiveness Of Two Types Of Educational Computer Games, Timothy Brent Dedeaux

Dissertations

The purpose of the study is to compare two types of educational video games based on Malone’s (1984) theory of challenge, curiosity, and fantasy. The participants were 136 students from a community college in the southeastern United States. The study used a quantitative approach with participants randomly divided into two groups, one playing each of the two games. Participants were given a brief introduction to a list of French phrases and words, took a pre-test, played the selected game, and then took a post-test to assess content knowledge gain. Brockmyer et al.’s (2009) Game Engagement Questionnaire was used to assess …

Is There A Relationship Between Physical Fitness And Student Academic Achievement?, William Rushton Parker

Dissertations

The study utilized a quantitative approach to identify the relationship between students’ levels of fitness to students’ academic achievement as well as addressing the attitudes of elementary administrators, fifth grade regular education teachers, and elementary physical education teachers towards physical fitness and academic achievement. Instruments used in the study were the Mississippi Curriculum Test, 2^nd Edition (MCT2) and the FITNESSGRAM. The data from the FITNESSGRAM and MCT2 were archival, coming from the 2013-2014 academic school year. The MCT2 provided scores from the areas of language arts, mathematics, and science, and the FITNESSGRAM provided the fitness scores of those students. …

Quilting In Children's Literature: An Analysis Of Stereotypes, Megan Egbert

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

For many people, exposure to folk art happens at a young age; however, we may not realize what it is, see its value, or be aware of the terminology used by scholars. The lack of understanding the importance of folk art is especially true for children’s books. This project focuses on the analysis of children’s books about quilts or quilting, primarily because quilts are often found in books and relatable to a wide audience. While the choice in genre and topic may limit the scope of folk art analysis, there are still hundreds of books solely based on quilts or …

An Examination Of Teacher Understandings Of Technology Integration At The Classroom Level, Shawn M. Carlson Phd

All Student Scholarship

The purpose of this dissertation is to describe and understand how teachers describe the changes in their practices as a result of ten years participation in a one-to-one environment. This research study focuses on one successful middle school’s adoption of laptops to support teaching and learning. A qualitative study using interviews of key participants was undertaken with teachers and administrators. The Technological, Pedagogical and Content Knowledge (TPACK) framework was used in conjunction with Rogers’ Diffusion of Innovation framework to understand from the participants’ perspective changes to their practice. The results indicate teachers underwent changes in their use of technology to …

Integration Of Multi-Platform High-Dimensional Omic Data, Xuebei An

Dissertations and Theses (Open Access)

The development of high-throughput biotechnologies have made data accessible from different platforms, including RNA sequencing, copy number variation, DNA methylation, protein lysate arrays, etc. The high-dimensional omic data derived from different technological platforms have been extensively used to facilitate comprehensive understanding of disease mechanisms and to determine personalized health treatments. Although vital to the progress of clinical research, the high dimensional multi-platform data impose new challenges for data analysis. Numerous studies have been proposed to integrate multi-platform omic data; however, few have efficiently and simultaneously addressed the problems that arise from high dimensionality and complex correlations.

In my dissertation, I …

Patent Scope And Enablement In Rapidly Developing Arts, Alan L. Durham

North Carolina Law Review

No abstract provided.

An Arithmetic-Based Deterministic Centroid Initialization Method For The K-Means Clustering Algorithm, Matthew Michael Mayo

Theses and Dissertations

One of the greatest challenges in k-means clustering is positioning the initial cluster centers, or centroids, as close to optimal as possible, and doing so in an amount of time deemed reasonable. Traditional fc-means utilizes a randomization process for initializing these centroids, and poor initialization can lead to increased numbers of required clustering iterations to reach convergence, and a greater overall runtime. This research proposes a simple, arithmetic-based deterministic centroid initialization method which is much faster than randomized initialization. Preliminary experiments suggest that this collection of methods, referred to herein as the sharding centroid initialization algorithm family, often outperforms random …