Digital Commons Network^™

Electric Power Distribution Optimization Using Evolutionary Algorithms, Sowmya Parimi

Open Access Theses & Dissertations

In the present research, a new evolutionary algorithm is developed to solve the component allocation problem in electricity distribution systems. The problem addresses the upgrade/design of an electricity distribution system with the objective of minimizing expected system downtime subject to cost and repair time constraints. The algorithm is tested on the Dual Element Spot Network (DESN) configuration which is one of the most commonly used configurations by the power industry. This algorithm is demonstrated with two examples.

Runtime Assertion Checking For Jml On The Eclipse Platform Using Ast Merging, Amritam Sarcar

Open Access Theses & Dissertations

The Java Modeling Language (JML) is a formal behavioral interface specification language for Java. It is used for detailed design documentation of Java program modules such as classes and interfaces. JML has been used extensively by many researchers across various projects and has a large and varied spectrum of tool support. It extends from runtime assertion checking (RAC) to theorem proving.

Amongst these tools, RAC and ESC/Java has been used as a common tool for many research projects. RAC for JML is a tool that checks at runtime for possible violations of any specifications. However, lately there has been a …

Hip Hop Rhetoric: Relandscaping The Rhetorical Tradition, Roberto Jose Tinajero Ii

Open Access Theses & Dissertations

This dissertation is a rhetorical analysis of hip hop music and culture. Chapter 1 focuses on adding hip hop rhetoric to the discussion and terrain of rhetoric and writing studies and to the rhetorical tradition. Chapter 2 uses the rhetorical notion of kairos to discuss the ethos of hip hop culture and discourse. Chapter 3 uses hip hop rhetoric to discuss the tensuous-solidarity between Latinos and African Americans. Chapter 4 focuses on Latino/Borderland Hip Hop and discusses the multi-consciousness of Latino identity. Chapter 5 focuses on Christiian religious imagery in gangsta rap music. There is also a short conclusion.

Survey Research On Communication And Language For English Language Learners And Native English Speakers Enrolled In A College Course On Statistical Literacy, Maria Guadalupe Valenzuela

Open Access Theses & Dissertations

The purpose of this study was to examine in what ways language is a factor that affects the learning process of students in an introductory statistics class. This research used a questionnaire survey instrument called: CLASS, Communication, Language And Statistics Survey that was applied to a total of 137 college students from a large southwestern public university, 83 of these students were self-identified as native English speakers (NOELL) and 53 were self-identified as English learner speakers (ELL) and one was dropped. This research found that in statistical instruction, there are some particular differences in behavior and learning process in the …

Vision-Based Virtual Mouse System, Tom Wanjala Watiti

Open Access Theses & Dissertations

This thesis describes a virtual mouse system that utilizes machine vision technology to enable a user to navigate through software window screens on a standard personal computer, access and control software, and/or peripheral devices attached to the personal computer. Utilizing the virtual mouse, the user can execute the standard control functions of the system mouse required to perform software application selection functions and navigation tasks without physical interface with the controlled computer. The machine vision algorithm utilizes a set of four simulated photoelectric sensors, with Gaussian filter sensitivities, to compute and track the mouse location. By utilizing Gaussian filters, instead …

Education, Infrastructure, And Regional Income Performance In Arkansas, Phuntsho Wangmo

Open Access Theses & Dissertations

No abstract provided.

Patterns And Challenges Of Parenting School-Age Children Among Selected Sub-Saharan African Immigrant Parents In Southwest Michigan: A Multiple-Case Study, Israel M. Kafeero

Dissertations

Problem. Parenting among immigrants presents unique challenges to parents whose cultural orientation is different from the host culture. Because of the meager research literature on immigrant families in the USA, little is known about the phenomenon of parenting among sub-Saharan African immigrant parents. This study investigated the patterns related to the parenting practices of selected sub-Saharan African immigrant parents, how they conduct corrective discipline to their children, and the challenges they face rearing children in Southwest Michigan.

Method. Qualitative research methods including interviews, observations, focus group discussions, and artifact collection were used in this dissertation to generate data. A snowball …

An Investigation Of The Knowledge And Beliefs Held By Teachers And Parents In A Parochial School System Regarding Attention-Deficit/Hyperactivity Disorder And The Variables That Predict Their Knowledge, Kendra-Lee Yvonne Pearman

Dissertations

Problem

Attention-Deficit/Hyperactivity Disorder (ADHD) is one of the most prevalent childhood disorders affecting 3 to 5% of school populations in the United States and other countries. Due to the behavioral and/or academic challenges of children with ADHD, they are at risk for grade retention, dropping out of high school, and teenage delinquency, which can lead to negative consequences in society. Children with ADHD are found in every school setting, including parochial schools. Past studies have found teachers and parents have inadequate knowledge about ADHD, which can negatively affect these children. This study investigated what teachers and parents of children in …

Machiavellian Heroes Through The Prism Of Aristotle, Robert Acosta

Open Access Theses & Dissertations

This Thesis examines the relationship between the political philosophies of Machiavelli and Aristotle. It hypothesizes that Machiavelli incorporates three fundamental premises of Aristotle's political philosophy: 1. Politics is the master science 2. Man is a political animal 3. Aristotle's conception of human nature. In order to test the hypoThesis the Thesis utilizes case studies in the form of Machiavelli's four excellent men (Theseus, Romulus, Cyrus, and Moses) that are named explicitly in Chapter VI of The Prince . It is concluded that there is an element of Aristotle's fundamental political philosophy that is incorporated by Machiavelli. This relationship is often …

Planting Missional Mennonite Churches In Complex Social Contexts As The Denomination Undergoes A Paradigm Shift In Ecclesiology: A Multiple Case Study, David W. Boshart

Dissertations

Problem. The problem investigated in this study is the struggle of church planters and their key stakeholders to develop common understanding about the churches that are being planted in complex social contexts while relating to a denomination in the midst of an ecclesial paradigm shift in mission.

Method. This qualitative research used a multiple case design with an emphasis on narrative inquiry. Data collection involved conducting semi-structured interviews with denominational and conference leaders, church planters, and key stakeholders. The four cases chosen included Anglo, Hispanic, Hmong, and multi-ethnic church plants.

Findings. The study found that the attempt to establish a …

Synthesis And Characterization Of Acetylenic Derivatives Of The Actinide Extractant (Aryl) N,N Di (Alkyl)Carbamoylmethylphosphine Oxide (Cmpo), Mario Ivan Baeza

Open Access Theses & Dissertations

We have used the reaction between the sodium salt of (diaryl)-N,N-di-(isobutyl)carbamoylmethylphosphine oxides {[Aryl)2P=O][iBu2NC=O]CH}-Na+ and chloromethylacetylenes to produce the first acetylenic derivatives of the carbamoylmethylphosphine oxide (CMPO) actinide extractants. The new compounds - CMPO-CH2C2H (1) {aryl = phenyl}, (2) {aryl = tBu-phenyl}; CMPO-CH2C2Me (3) {aryl = phenyl}; and CMPO-CH2C2CH2Cl (4) {aryl = phenyl}, (5) {aryl = tBu-phenyl} - have been characterized by spectroscopy (1H, 13C, 32P NMR) and also by single crystal X-ray diffraction. These new extractants lead the way to new derivatives aimed at using the materials as both optical and electrochemical actinide and other metal sensors.

Asymptotic Approximation Of The Free Boundary For The American Put Near Expiry, Walt E. Bales

Open Access Theses & Dissertations

An introduction to boundary value problems for the heat operator will focus on the Dirichlet and Neumann problems in bounded domains. Following an overview of the basic financial principles of derivative securities, a derivation of the Black-Scholes formulae will be given. Partial differential equations as free boundary problems will then be discussed and applied to modeling the American Put option. A method of solution close to expiry will then be investigated.

Two-Dimensional Gravity Modeling Of The Rattlesnake Springs Watershed, Carlsbad Caverns National Park, New Mexico, Nikolay D. Boykov

Open Access Theses & Dissertations

A series of non-invasive geophysical investigations at the Rattlesnake Springs part of Carlsbad Caverns National Park, New Mexico, were performed in an effort to better delineate the watershed of the springs. The goal of this project is to determine possible locations of fractures and faults that may control the distribution of groundwater that feeds Rattlesnake Springs. Once the water flow paths are identified, the park will be able to better protect Rattlesnake Springs from environmental hazards, such as oil and gas drilling, as well as from upstream water development. As part of this effort I conducted a precision gravity survey …

Science Versus Religion: Protestant Dominance And Cultural Discrimination In Public Schools, Melissa Marie Brock

Open Access Theses & Dissertations

This research offers a critical analysis of the current controversy concerning religion. The study explores the establishment of the public school system under Protestant dominance and use of this dominance to assert authority over minority groups. Legislation and court action have created a position of opposing policy; placing science as the opposite of religion, and Atheists and Christian activists are using curriculum as an ideological battle field. Currently, since 9/11, religious discrimination and hate crimes are on the rise. In order to investigate this controversy, this study explores literature, published surveys, and government documents. The American public school systems are …

Building Collaborative Capacity Across Institutional Fields: A Theoretical Dissertation Based On A Meta-Analysis Of Existing Empirical Research, Vivian Hernandez Carrasco

Open Access Theses & Dissertations

This Dissertation study folds the existing empirical literature across a broad spectrum of disciplines with the experience of a national collaboration between Fortune 500 corporations, government agencies and the United States Army to explore the capacity and key competencies required to support successful interorganizational collaboration (IOC) at the individual and organizational level. It explores the evolution of collaboration and maps the continuum of related concepts, illustrating their distinction in a spectrum of IOC. It presents the collaboration process as a dialectic model within a Systems Psychodynamic Perspective, detailing the necessary ingredients for increasing collaborative capacity within individuals and organizations. The …

Getting To Know You: The Effects Of Familiarity And Time On Social Perception, Clarissa Arms Chavez

Open Access Theses & Dissertations

A new direction in social perception research is developed. The present research explored the impact of familiarity and time on social perception processes based on cognitive neuroscience models, social categorization models, and memory consolidation constructs. Familiarity was manipulated within an exposure task and time was manipulated by testing participants both 2-6 hr and 48 hr after the exposure task. Experiment 1 investigated the influence of familiarity and time on the argument of the automaticity of social categorization and associated stereotypes by testing the argument with two separate tasks. Experiment 1a tested the influence of familiarity and time on associated stereotypes …

Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral

Open Access Theses & Dissertations

The effect of stimulus type on task-irrelevant evaluative categorization was examined in two separate studies by using the P3 component from event-related brain potentials. The first study presented idiosyncratic stimuli consisting of individuals that were rated by participants as either positive or negative within sequences of pictorial and verbal stimuli. The second study presented sequences of novel and familiar stimuli consisting of previously normed unattractive and neutral individuals. It was hypothesized that pictures would elicit task-irrelevant evaluative categorization processes and so would novel stimuli (relative to words and familiar stimuli, respectively). Task-irrelevance was examined by assessing P3 peak amplitude to …

South Park And Absurd Culture War Ideologies, The Art Of Stealthy Conservatism, Drew W. Dungan

Open Access Theses & Dissertations

South Park serves as an example of satire and parody lampooning culture war issues in the popular media. Since it targets culture war issues, it is relevant to analyze its political and social stance on the issues as presented within. Both extremes in political and social ideology are targeted. Although the program notes an ideological absurdity in extremist points-of-view, the presentation of the issues attempts to create a sense of moderate ideology criticizing both the far left and far right, when in fact, closer analysis provides evidence that South Park serves a stealthy conservative perspective. Stealthy conservatism presents itself as …

Appropriate Prosodic Variation Is Valued By Users, Rafael Escalante-Ruiz

Open Access Theses & Dissertations

Spoken dialog systems today do not vary the prosody of their utterances, although prosody is known to have many useful expressive functions. In a corpus of memory quizzes, I identified eleven dimensions of prosodic variation, each with its own expressive function. I identified the situations in which each was used, and how to detect these situations from the dialog context and the prosody of the interlocutor's previous utterance. I implemented the resulting response rules and had 21 users interact with two versions of the system. Overall they preferred the version in which the prosodic forms of the acknowledgments were chosen …

The Problem Of Time In Quantum Mechanics, Crisol J. Escobedo

Open Access Theses & Dissertations

The purpose of my Thesis is to gain a better understanding of the nature of time and the problems associated with time. For example, I aim to explore the problem associated with the energy-time uncertainty relation due to the lack of a universal operator for time. Using Jan Hilgevoord's work, I will explore the idea that if a measure of time is to be obtained in quantum mechanics, then time has to be a property of physical systems that can only be measured in relation to other systems. As such, time cannot be independent of physical systems. This implies that …

Autonomous Vehicle Navigation: A Comparative Study Of Classical Logic And Neural Network Technique, Javier Alejandro Flores

Open Access Theses & Dissertations

Today is an era in which humans need the help of automated machines to facilitate their hectic lives. Over the past few decades, robotics has been one of the most researched areas in the world. One area of this research is obstacle avoidance for autonomous vehicles. In order to avoid an obstacle, the system may include two important characteristics: obstacle detection and avoidance control. In this Thesis a classical logic system and artificial neural network approach is presented. With the help of an Integrated Development Environment, a virtual robot was able to negotiate a maze and avoid obstacles according to …

Top Management Team Heterogeneity, Global Strategic Posture, And Firm Performance: Evidence From Mnes Headquartered Around The World, Adrian Gil

Open Access Theses & Dissertations

This study empirically examines the relationship between top management team (TMT) heterogeneity and firm performance for a sample of multinational enterprises (MNEs) headquartered in 31 countries from across the globe. Utilizing the theoretical perspectives of upper echelons (Hambrick & Mason, 1984) and information processing (Daft, Bettenhausen, & Tyler, 1993; Galbraith, 1973), I hypothesize that global strategic posture, a measure of the intensity of a firm's involvement in the multinational business environment, moderates the relationships between TMT heterogeneity and firm performance. My findings reveal an "enhancing" interaction (Cohen, Cohen, West, & Aiken, 2003: 285-286) between the different TMT heterogeneities investigated and …

The Effectiveness Of Multicultural Based Social Stories To Increase Appropriate Behaviors Of Children With Developmental Delay, Ning Hsu

Open Access Theses & Dissertations

The needs of students from culturally and linguistically diverse background have become a growing concern in America. It is a great challenge for educators to provide appropriate education for culturally and linguistically diverse students with disabilities. Although there are some researchers that espouse effective principles of multicultural special education, there have been few empirical on the effectiveness.

Social Stories are a practical behavioral intervention which has been regarded as an individualized intervention since the student's needs, background and learning style should be took into consideration. This present research used an ABA design to compare the modified social story with and …

Assistive Technology As A Cognitive Developmental Tool For Students With Learning Disabilities Using 2d And 3d Computer Objects, Felipe D. Guevara

Open Access Theses & Dissertations

This study presented a theory in which assistive technology and body kinesthetic helped students understand concepts taught in the regular education classroom. The study included students already identified and diagnosed with a learning disability (LD). The research is based on cognitive theories that state that cognitive development could use alternative representation to have a deeper impact in the way Students with LD process information by activating different parts of the brain that are involved in the learning process. The study included students from 9th thru 12th grades. Students were selected from the ones receiving services from the special education department …

Nondestructive Testing For Finding Out The Displacement Of Crack In Silicon Nitride, Sriharsha Kurra

Open Access Theses & Dissertations

Nondestructive testing (NDT) has become an increasingly vital factor in the effective conduct of research, development, design and manufacturing. Only with the appropriate use of nondestructive testing techniques, the benefits of advanced materials science can be fully realized. NDT has a wide range of industrial applications and various methods and techniques are employed to perform the nondestructive testing. The current work aims to demonstrate the nondestructive testing technique applied to determine the damage in silicon nitride. Ceramics are brittle materials and non destructive evaluation methods are required to assess the quality and reliability of them. A nondestructive evaluation technique has …

New Algorithms For Optimal Portfolio Selection, Tanja Magoc

Open Access Theses & Dissertations

Over the past four thousand years, numerous techniques have been developed and used to address problems in Finance. These techniques include simple arithmetic calculations and probabilistic methods as well as intelligent systems techniques such as neural networks, genetic algorithms, multi-agent systems, and support vector machines. The techniques have been developed to accurately and quickly collect, validate, analyze, and integrate data that change dynamically.

The particular problem that we address in this Dissertation is the construction of efficient algorithms for the problem of an optimal portfolio selection, that is, algorithms that would accurately and in real time determine the best distribution …

The Distinctiveness Effect In Fingerprint Identification: How The Role Of Distinctiveness, Information Loss, And Informational Bias Influence Fingerprint Identification, Jessica L. Marcon

Open Access Theses & Dissertations

Fingerprint misidentification has become a concern for legal professionals, especially after the high profile misidentification of Brandon Mayfield as the Madrid train bomber and the first fingerprint related DNA exoneration of Stephen Cowans. The current studies examined how humans perceive the distinctiveness of fingerprints, whether distinctiveness effects found in face perception research are evident in fingerprint identification, and whether there are conditions under which the distinctiveness effect can be eliminated. Experiment 1 examined the distinctiveness effect and information loss, while Experiment 2 investigated the distinctiveness effect and its interaction with information loss and informational bias. In Experiment 1, results showed …

High-Temperature Phase Transitions In Rbh2po4, Heber Jair Martinez

Open Access Theses & Dissertations

Recent studies have shown that the proton conductivity of MH2PO4 (M=Cs, Rb) solid-acids exhibits a sharp, several-order-of-magnitude increase upon heating above a certain temperature threshold [Boysen et al., Chem. Mater. 15, 727(2003), Boysen et al., Chem. Mater. 16, 693(2004)]. This so-called superprotonic behavior allows the above-mentioned compounds to function as fuel-cell electrolytes at intermediate temperatures [Boysen et al., Science 303, 68(2004)], a remarkable application that has attracted much interest. Yet, the crystal structures and microscopic mechanisms responsible for this heating-induced proton conductivity enhancement are not fully understood.

Our group has previously demonstrated [Botez et al., J. Chem. Phys. 127, 194701(2007)] …

Un/Commonplaces: Redirecting Research And Curricula In Rhetoric And Writing Studies, Brian J. Mcnely

Open Access Theses & Dissertations

Un/Commonplaces is guided by a broad and fundamental question of inquiry regarding writing and disciplinary research: how can some of the predominant ways that our discipline has approached writing be retheorized to better approximate the complexity of contemporary rhetorical knowledge work? A corollary inquiry explores the resonances with English Studies that persist--and seeks to uncover how they persist--in our field. I argue that we can negotiate such issues by tracing and troubling some of our core disciplinary commonplaces, those commonsense notions and practices too frequently and easily adopted from English Studies and perpetuated within the often tumultuous and hegemonic relationship …

Finite Element Modeling Of Nondestructive Test Methods Used For Detection Of Delamination In Hot Mix Asphalt Pavements, Dante Mejia Munoz

Open Access Theses & Dissertations

For the simulation of detection of delamination this study focus on three NDT methods: Impact Echo, Impulse Response and Ultrasonic Surface Waves. The was evaluated and then a parametric study was elaborated.