Digital Commons Network^™

Fitness Proportionate Niching: Harnessing The Power Of Evolutionary Algorithms For Evolving Cooperative Populations And Dynamic Clustering, Abrham Tibebu Workineh

Dissertations

Evolutionary algorithms work on the notion of "best fit will survive" criteria. This makes evolving a cooperative and diverse population in a competing environment via evolutionary algorithms a challenging task. Analogies to species interactions in natural ecological systems have been used to develop methods for maintaining diversity in a population. One such area that mimics species interactions in natural systems is the use of niching. Niching methods extend the application of EAs to areas that seeks to embrace multiple solutions to a given problem. The conventional fitness sharing technique has limitations when the multimodal fitness landscape has unequal peaks. Higher …

Tropical Cyclone Intensity Estimation Using Temporal And Spatial Features From Satellite Data, Gholamreza Fetanat Haghighi

Dissertations

Accurate intensity estimation of tropical cyclones (TC) is an important topic of research due to its economic impact and public safety concerns. An accurate measure of the current wind strength is necessary to accurately predict TC intensity. We have developed and tested automated method to estimate TC intensity based on the existing historical satellite images alone. The Hurricane Satellite data (HURSAT-B1) is used to develop the algorithm, which focuses on the North Atlantic from 1978-2009. The algorithm is trained and validated using aircraft reconnaissance-based data. Here, the data is restricted to include only fixes that are over water and are …

A Novel Approach To Intelligent Navigation Of A Mobile Robot In A Dynamic And Cluttered Indoor Environment, Daniel Opoku

Dissertations

The need and rationale for improved solutions to indoor robot navigation is increasingly driven by the influx of domestic and industrial mobile robots into the market. This research has developed and implemented a novel navigation technique for a mobile robot operating in a cluttered and dynamic indoor environment. It divides the indoor navigation problem into three distinct but interrelated parts, namely, localization, mapping and path planning. The localization part has been addressed using dead-reckoning (odometry). A least squares numerical approach has been used to calibrate the odometer parameters to minimize the effect of systematic errors on the performance, and an …

Computational Material Modeling For Mechanical Properties Prediction And A Methodology For Mie Gruneisen Equation Of State Characterization Via Molecular/Nano Scale Cementitious Material Constituents, Ahmed Mohamed

Dissertations

Cementitious materials have complex hierarchical structures with random features that range from nanometer (nm) to millimeter (mm) scale. Processes occurring at the nanometer scale affect the performance at larger length scales. The present work employs molecular dynamics (MD) simulations as the computational modeling methodology to predict mechanical properties for both hydrated and unhydrated cementitious materials at the molecular/nano scale level. A detailed study on the effect of increasing MD simulation cell size, dynamics time duration on the predicted mechanical properties was performed. Further studies focused on understanding the effect of higher thermodynamic pressure states on predicted …

Risk Perception In Cardiovascular Disease, Michelle Ellen Block

Dissertations

Cardiovascular disease (CVD) remains among the leading causes of death in the United States despite widespread knowledge about risk factors as well as effective primary prevention strategies. Risk perception is a complex phenomenon that plays an important role in how persons view disease and ultimately how they make health behavior choices. This study is supported by the knowledge that few studies have examined how persons perceive cardiovascular risk or the variables thought to contribute to the formation of risk perception.

Purpose: The purpose of this study was to examine how accurately persons perceive personal risk for cardiovascular disease and identify …

Applying Data Visualisations To Open New Perspectives In Birdwatching, Frank Kendlin

Dissertations

Advances in data analytics for big data have affected many different domains and are providing new insights from these data for their respective communities. One such community is conservation science. A part of section of this community, ornithologists and bird conservationists has at its disposal millions of volunteers willing to contribute to a new ‘big’ data set. This can be achieved by means of new technology and the use of citizen science. This is already underway in North America through the excellent work of the Cornell Laboratory of Ornithology (CLO). This institute has harnessed the technology and the people and …

High Efficiency Thrust Vector Control Allocation, Jeb S. Orr

Dissertations

The design of control mixing algorithms for launch vehicles with multiple vectoring engines yields competing objectives for which no straightforward solution approach exists. The designer seeks to optimally allocate the effector degrees of freedom such that maneuvering capability is maximized subject to constraints on available control authority. In the present application, such algorithms are generally restricted to linear transformations so as to minimize adverse control-structure interaction and maintain compatibility with industry-standard methods for control gain design and stability analysis. Based on the application of the theory of ellipsoids, a complete, scalable, and extensible framework is developed to effect rapid analysis …

Characteristics Of And Strategies Used By Principals Who Promote Academic Success In Title I Classified Schools, Kimberly Kay Cohen

Dissertations

This research is an attempt to explore the various strategies employed by the principals of Title I schools in order to foster an environment of student progress and achievement. Since the inception of the NCLB Act, pressures have been increasing on the schools, especially on Title I Schools, and on their principals to increase academic performance. The researcher selected four Title I Schools and used questionnaires for teachers and interviews for principals to explore the answer to the research questions. The research philosophy acknowledges both the mainstream approaches of positivism and interpretivism and follows a mixed methods approach. The sample …

Visual Analysis Of E-Textbooks For Senior High School In Indonesia, Ouda Ena

Dissertations

The purpose of the study was to evaluate the visual images used as illustrations in the English electronic textbooks for grades ten, eleven, and twelve in Indonesia. Qualitative visual content analysis was employed as the methodology of the research. The analysis focused on whether these e-textbooks accommodated the religious, gender, ethnic, and socioeconomic diversity of the students. These four aspects of cultural diversity that influenced students learning in Indonesian contexts were crucial to examine because the students were so diverse as results of the geographical conditions and historical background of Indonesia. Eight English e-textbooks were examined. First, the result showed …

On Stretch Factors Of Greedy Routing Algorithms, Omkar U. Kulkarni

Dissertations

Routing aims to find a path to deliver the information from a source to the destination in the network. Routing is one of the most important algorithmic problems in networking. Our research focuses primarily on greedy routing algorithms. The greedy routing algorithms always compute a routing path by forwarding a message to a neighbor closer to the destination than itself. The closeness to the destination can be measured differently via different notions of distances. Greedy routing algorithms keep forwarding the message to a neighbor closer to the destination than itself until the distance to the destination reduces to zero. When …

Bound Orbits And Virialized Systems In A Dark Energy Universe, Kristen Lackeos

Dissertations

It is shown that at sufficiently large radii dark energy modifies the behavior of (a) bound orbits around a galaxy, and (b) virialized gas in a cluster of galaxies. In (a), there exists a maximum circular orbit beyond which periodic motion is no longer possible, and the evolution of orbits near critical binding is analytically calculable using an adiabatic invariant integral. The finding may have application to wide galaxy pairs. In (b), dark energy necessitates the use of the generalized Virial Theorem to describe gas at the outskirts of a cluster. As a result, gas at a radius of 4 …

A Content Analysis To Investigate The Evidence Of 21st Century Knowledge And Skills Within Elementary Teacher Education Programs In The United States, Mary Margaret Ruettgers

Dissertations

Are graduates of teacher preparation programs adequately prepared with the skills and knowledge to teach in the 21st century classroom? This study consisted of a quantitative content analysis to investigate the presence of 21st century knowledge and skills within a stratified random sample of teacher preparation programs in the United States as measured by the 21st Century Learning Framework. Based on the current literature, the researcher identified 21st century competencies: global awareness; digital competencies; critical thinking; collaboration; cross-cultural; communication; and problem solving. For null hypothesis numbers two through eight, the researcher determined how closely the institution’s mission statements, course descriptions, …

Teachers' Perceptions Of The Availability And Need Of A Support Program For Students With Learning Difficulties Attending Elementary Schools In The Atlantic Union Conference, Lileth Althea Coke

Dissertations

Purpose of the Study. Support programs have been known to be very effective in helping students succeed academically, socially, behaviorally, and emotionally. The purpose of this study was to investigate teachers' perceptions of the availability and need of a support program for students with learning difficulties who attend elementary schools operated by the Atlantic Union (AU) Conference. The study also identified elements of a support program that teachers perceived as both available and necessary for the academic growth and development of these students.

Method. This study employed a survey research methodology in which survey questionnaires were used to gather information …

Emergency Nurses' Knowledge, Attitudes And Preventive Practices Regarding Firearms And Firearm Injury Prevention For Children, Dorothy Ann Gomez

Dissertations

In 2010, there were 134 deaths attributed to unintentional firearm injuries of children under 19 year and 3,019 nonfatal injuries (CDC, 2011). Nurses are expected to identify potential dangers in the community and protect those at risk. It was found that there is limited research on the effectiveness of current firearm injury prevention practices of nurses. The study was designed to examine the knowledge, attitudes and practice characteristics of Emergency Nurses toward firearm prevention practices. A convenience sample of 189 emergency nurses completed a voluntary, anonymous survey on practices regarding childhood gun safety. Seventy-one percent of respondents agreed that firearm …

How Do Professional Learning Communities Foster Strong Career And Technical Education Programs Of Study In Illinois Public High Schools?, Wendy Custable

Dissertations

This research study examines how Illinois public high school Career and Technical Education educational leaders employ best practices in providing all students rigorous, relevant, and equitable learning experiences within a professional learning community structure.

This study utilized a mixed method two-tier case study methodology. Tier one consisted of a survey administered to 605 Illinois public high school Career and Technical Education leaders, outside of the Chicago Public School system, with 72 leaders who responded. This survey asked the leaders questions about what CTE programs their schools offered students and how they provided these students rigorous, relevant, and equitable learning experiences …

Discovered By The Process: A Methodology For Twentieth-Century Moral Fiction, Sean Adriaan Labbe

Dissertations

One of the great ironies of the "ethical turn" that literary criticism has taken in the last several decades is that while we as literary critics strive to be ethical or moral, we usually feel embarrassed at actually taking about moral concepts, especially as they are manifested in literary texts. As I am interested in how to discuss moral issues depicted in literary texts without reading them naively and reductively for guidelines to live by or for a social program to implement, my dissertation is designed to model a method of inquiry that approaches literary texts of the twentieth century …

Utilizing Response To Intervention (Roti) As A Means Of Studying Capacity Building And Motivation Of Staff By School Leadership Teams, Brian James Mahoney

Dissertations

This research study explored the concept of capacity building and motivation of staff by school leadership teams in the successful development and implementation of educational initiatives, specifically Response to Intervention (RtI). A great deal of scholarship has addressed leadership and its effect on motivation, but few studies have investigated the necessary characteristics and effective school should encompass to generate widespread and sustainable capacity to raise the bar and close the gap of student achievement.

The central research questions of this study are:

1) In two Illinois public high schools with positive statewide reputations, according to the perspectives of each RtI …

Open Enrollment In Advanced Placement Courses: Experiences Of Traditional And Non-Traditional Students, Scott Errol Mcalister

Dissertations

Beginning in the late 1990's, amongst concern that traditionally underrepresented groups of students such as minorities and low income students had been denied the opportunity to enroll in AP courses, The College Board (the non profit agency that runs the AP program) began to emphasize its belief that all students should have the right to take AP courses if they desire and that secondary schools should not limit AP enrollment based on prerequisites such as teacher recommendation, GPA, and class rank. As a result of these factors, the AP program began to see dramatic gains in the number of students …

Prolegomena To Kant's Theory Of The Derangement Of The Cognitive Faculties, Gisele Velarde La Rosa

Dissertations

In the literature on Immanuel Kant there is no systematic account of the derangement of the constitutive cognitive faculties from an exclusively philosophical point of view. This dissertation opens the path for the development of such an account. It does so by presenting Kant's positive account of the proper functioning of the constitutive cognitive faculties, namely, sensibility, imagination, and understanding. As such, the dissertation offers a series of "prolegomena" to a Kantian theory of the derangement of the cognitive faculties. At the foundation of Kant's theory of cognition is the transcendental unity of apperception, the original ground of cognition. Through …

Student Achievement In Middle Grades: Gauging The Effect Of Teacher Training On Student Learning, Natalya Gnedko

Dissertations

In the United States, teacher certification has been a baseline measure of teacher quality and gateway to the teaching profession for many decades. Research suggests that teacher certification is beneficial to student achievement, with findings particularly promising when content area of teacher certification is taken into account. Positive findings are largely limited to high school. However, in recent years middle grades have been increasingly viewed as a starting point for success in high school and college, which led many school districts to require advanced training for middle grades teachers. To examine the effectiveness of advanced teacher training in middle grades, …

Down To Earth Ethics: Exploring Relation And Environmental Responsibility, Matthew Gowans

Dissertations

This dissertation is aimed at exploring the question of direct engagement with the natural world as a way of establishing certain moral and ontological truths, particularly those connected to our current environmental struggles. Contrary to the wave of much of modern Western thinking, Albert Schweitzer, Martin Buber and Aldo Leopold demonstrate an ethics that is relational in nature, action oriented, and bound up in inexpressible wonder. Consequently, these thinkers are also critical of a world which bases the whole of reality solely on the logic of rational investigation and the material facts of science. The heart of ethical responsibility in …

An Investigation Of Chinese Graduate Student Understanding Of Academic Integrity In U'S Higher Education, James E. Hammerschmidt

Dissertations

Recent studies suggest that plagiarism in U.S. higher education may be more of an issue among Chinese graduate students. When Chinese graduate students are accused of plagiarizing an implicit assumption often exists that poor language skills or lack of integrity may be the cause. The failure to consider cross-cultural issues in learning may have led to these views. An examination of previous learning experiences in the Chinese graduate student's home country was needed in order to obtain a deeper understanding of how culture enters into their understanding of academic dishonesty. This study seeks to a.) explore the understanding and meaning …

Examining Predictive Validity And Rates Of Growth In Curriculum-Based Measurement With English Language Learners In The Intermediate Grades, Ella Farmer

Dissertations

In the current educational climate, school districts and states are being held accountable for the progress of all students. Students who speak another language at home and have limited English proficiency, known as English Language Learners (ELLs), continue to underperform when compared to English proficient peers. The purpose of the study was to determine whether a brief, standardized reading fluency probe (R-CBM) is an effective tool for measuring growth over time and identifying students at risk of failure of a state standards test, considering ELL status. Archival data was used with a sample of 1,056 students in fourth through sixth …

Opening The Black Box: Understanding Adult Inpatient Falls, Laura M. Rogers

Dissertations

Within the United States, falls are the largest category of adverse events reported in hospitals. Injuries associated with falls include increased costs, extended length of stays, increased mortality and morbidity, and liability to hospitals. The purpose of this study was to discover, describe, and systematically analyze universal and diverse care meanings and expressions of adults experiencing a fall while hospitalized. The research was conceptualized with the ethnographic theoretical framework of Culture Care Diversity and Universality (Leininger 2001, 2006). Data collection took place in a large academic medical center, over a five month period and included 24 participants: eight adult inpatients …

The Effect Of Co-Teaching On Student Achievement In Ninth Grade Physical Science Classrooms, Karen M. Lafever

Dissertations

Co-teaching is a method that is increasing within schools across the US as educators strive to leave no child behind. It is a costly method, having two paid instructors in one classroom, with an average of 24 students shared between them. If it significantly increases the achievement of all students, it is well worth the costs involved. However, few studies have analyzed the effectiveness of this method on student achievement. This research follows the academic accomplishments of students in a ninth grade physical science course. Nine sections of the course “Force and Motion” were taught with a single teacher, and …

Examining Institutional Climate In Higher Education: Administering The Nilie-Pace Instrument At A Private University In Central China, Linda Fraser Jacobsen

Dissertations

The first known campus climate study in central China was conducted for purposes of formative assessment by mixed methods, utilizing an instrument called the Personal Assessment of the College Environment (PACE) developed by the National Initiative for Leadership and Institutional Effectiveness (NILIE) at North Carolina State University in Raleigh. Surveys were translated into Mandarin and distributed in bilingual format to 1,170 campus employees at Central China University (a pseudonym) in Henan Province, and 945 surveys were returned, a rate of 80.8%. Participants who self-identified included both Chinese and foreign faculty, administrators and staff. Because the North American-normed instrument was administered …

Family Science: An Ethnographic Case Study Of The Ordinary Science And Literacy Experiences Of One Family, Glenda Margaret Mccarty

Dissertations

Despite the copious research available on science learning, little is known about ways in which the public engages in free-choice science learning and even fewer studies have focused on how families engage in science to learn about the world around them. The same was true about studies of literacy development in the home until the 1980s when researchers (e.g. Bissex, 1980; Heath, 1983; Taylor, 1983) began documenting the literacy happenings and practices of young children in natural settings. Findings from intensive emergent literacy research studies have challenged traditional approaches to the teaching and learning of literacy, especially drawing attention to …

An Analysis Of The Factors That Influence Global Mindedness In First-Year College Students, Kristie Broadbent Guffey

Dissertations

This non-experimental, quantitative descriptive study was designed to determine what factors influence a first-year college students’ global mindedness and if any of those factors were predictors of the five subscales of global mindedness. Surveys were used to measure students’ global mindedness and their type of personality (N=424). Demographic questions were administered that included gender, county population, Pell grant eligibility, and first generation college student. Results indicated that first-year college students at a four-year public Master’s Large institution were moderately global minded. To predict global mindedness and its subscales, a regression model was developed using the Myers Briggs scores for extravert, …

"If It Ain't Broke, Break It": How Corporate Journalism Killed The "Arkansas Gazette", Donna Lampkin Stephens

Dissertations

Ownership is an increasingly critical issue for newspapers as they face the latest threats to the industry’s survival. Local, engaged, enlightened ownership is preferable to that of a distant corporation, but economic realities have decreed that corporate ownership has become the norm. The Arkansas Gazette was one of the most honored newspapers of twentieth-century American journalism under independent local family ownership, having provided brave leadership during the Little Rock Central Crisis, but its wounds from one of the country’s final fierce newspaper wars — against another local owner, Walter Hussman and his Arkansas Democrat — in the 1980s, combined with …

Best Practice In Early Reading Intervention: Implementing A Reading Intervention Program To Reach Below Level Readers, Bridgett Niedringhaus

Dissertations

The purpose of this study was to investigate the impact of a reading intervention program used with second and third grade students identified as not meeting grade level expectancy. Studies have indicated students who are not reading at grade level by the end of the third grade have an increasingly difficult time achieving at the rate of their same-age peers. In this mixed-methods case study, the researcher analyzed end of the year report card data for 30 students who received reading intervention using the Rigby Intervention By Design Program, conducted a Content Knowledge Survey with teachers, and performed Literacy Walkthroughs …