Digital Commons Network^™

Protein Engineering Of Cota Laccase By Using Bacillus Subtilis Spore Display, Silu Sheng

Dissertations

Spore display offers advantages over more commonly utilized microbe cell-surface display systems. For instance, protein-folding problems associated with the expressed recombinant polypeptide crossing membranes are avoided. Hence, a different region of protein space can be explored that previously was not accessible. In addition, spores tolerate many physical/chemical extremes. The aim is to improve pH stability using spore display. The maximum activity of CotA is between pH 4 and 5 for the substrate ABTS (ABTS = diammonium 2, 2’-azino-bis(3-ethylbenzothiazoline-6-sulfonate)). However, the activity dramatically decreases at pH 4. The activity is not significantly altered at pH 5. CotA is used as a …

Qualitative Modeling Of Chaotic Logical Circuits And Walking Droplets: A Dynamical Systems Approach, Aminur Rahman

Dissertations

Logical circuits and wave-particle duality have been studied for most of the 20th century. During the current century scientists have been thinking differently about these well-studied systems. Specifically, there has been great interest in chaotic logical circuits and hydrodynamic quantum analogs.

Traditional logical circuits are designed with minimal uncertainty. While this is straightforward to achieve with electronic logic, other logic families such as fluidic, chemical, and biological, naturally exhibit uncertainties due to their inherent nonlinearity. In recent years, engineers have been designing electronic logical systems via chaotic circuits. While traditional boolean circuits have easily determined outputs, which renders dynamical models …

Development Of A Comprehensive Safety And Preparedness Plan For Pregnancy Shelter Center, Catherine A. Marcum

Dissertations

Disaster has almost become a household word in America and around the world. Disaster Preparedness provides some since of control over the effects of disaster, however small that may be. The National Response Framework provides the structure under which all disasters are managed domesticallly (Veenema, 2013). It is scalable and flexible - having the ability to accomodate any disaster, from the smallest incident to a disaster of national proportions (http://emilms.fema.gov//IS700aNEW/index.htm; http://emilms.fema.gov/IS800Bindex.htm). Preparedness determines the degree of service disruption regardless of the nature of the disaster. The goal of preparedness within any entity is to expect the unexpected, …

The Lived Experiences Of Leading Edge Certified Elementary School Teachers Who Use Instructional Technology To Foster Critical Thinking, Collaboration, Creativity, And Communication In Their Classrooms: A Phenomenological Study, Natalie A. Ruddell

Dissertations

Purpose: The purpose of this phenomenological study was to describe the perceptions of current and former Leading Edge Certified (LEC) elementary school teachers regarding instructional technology practices that facilitate students’ development of critical thinking, collaboration, communication, and creativity (4Cs) in one-to-one computer classrooms in Riverside County, California.

Methodology: This qualitative study utilized a phenomenological design. The primary source of data collection was a standardized, open-ended interview aligned to the research questions of 12 participants. This study employed inductive analysis to analyze the rich data. Using inductive analysis, the data were coded and themes were identified that aligned to the research …

An Examination Of The Proportion Of Special Education Students In Single-Parent Homes In Comparison To Regular Education Students In Similar Households, Melissa M. Cook

Dissertations

This study was designed to determine the relationship between the family unit, which was defined as single-parent households and two-parent households, and educational placement. Data were collected from six Southwest Missouri K-8 districts in Region C. Participants reported student enrollment according to categories of single-parent special education, single-parent regular education, two-parent special education, and two-parent regular education. In addition, district special education coordinators were interviewed to gather data on their perspectives and experiences regarding the different household types and educational placement. This mixed methods design revealed students from singleparent households are more likely to be negatively affected by home environment …

Medication Dosage Calculation: A Mathematical Intervention For Nursing Students, Theresa D. Cowan

Dissertations

Nurse educators continue to express concern over the struggle that nursing students have with mathematical calculations necessary to compute medication dosage. This applied dissertation designed, implemented, and evaluated a structured program of mathematical remediation incorporating dimensional analysis. This program targeted nursing students with demonstrated deficiencies in computation skills. The degree of mathematical preparation that the student was exposed to prior to enrollment into nursing courses was considered worthy of review. The age-old adage of gender differences that were theorized to affect the mathematical ability of students was taken into regard as well. Best practices included a curriculum devised to address …

Alternative To Exclusionary Discipline: Perceptions Of The Effectiveness Of Positive Behavior Interventions And Supports (Pbis)—A Delphi Study Of Riverside County School Districts’ Directors Of Student Services, James D. Pike

Dissertations

Purpose: The first purpose of this Delphi study was to identify the degree to which Riverside County directors of student services or administrators who oversee student discipline perceive that positive behavioral interventions and supports (PBIS) components reduce exclusionary discipline and promote a positive school culture. The second purpose of this study was to identify key facilitators and barriers to PBIS implementation within the school districts of the experts who participated in this study.

Methodology: Using the Delphi method, the first questionnaire allowed participants to give broad-based responses from which themes were derived to be coded, stratified, and then presented through …

A Mixed-Methods Investigation Of An Attendance Program In A Missouri School District, Lindsay Sutherlin

Dissertations

In pursuance of analyzing attendance at Midwest High School (a pseudonym), the researcher examined the attendance program’s effect on the junior class. The goal of the researched attendance program was to find what worked in the program, what needed to be changed, and how effective was the program. In order to evaluate the program, the researcher used a software system, Pulse, to collect all quantitative data. The data system gave all numerical information covering attendance from the 2015-2016 school year. Qualitative data was used to analyze the students’ reactions and responses to the thencurrent attendance program. Students who were juniors …

Measuring The Outcome Of At-Risk Students On Biology Standardized Tests When Using Different Instructional Strategies, Dana Burns

Dissertations

Over the last two decades, online education has become a popular concept in universities as well as K-12 education. This generation of students has grown up using technology and has shown interest in incorporating technology into their learning. The idea of using technology in the classroom to enhance student learning and create higher achievement has become necessary for administrators, teachers, and policymakers. Although online education is a popular topic, there has been minimal research on the effectiveness of online and blended learning strategies compared to the student learning in a traditional K-12 classroom setting. The purpose of this study was …

An Examination Of Poverty: A Case Study Of One Rural Missouri School Attempting To Meet The Needs Of All Students, Amy Michelle Ross

Dissertations

The purpose of this study was to determine if poverty impacts average daily attendance, discipline infractions, or dropout rates of students in today’s society. The study included an in-depth analysis of homelessness, the influence it plays when educating children across the country, and the barriers schools face when dealing with families who live in poverty. According to Blad (2014a), enrollment of homeless students and those who qualify for free and reduced price meals are at record highs in the United States. Over half of the students in Missouri schools qualify for free and reduced price meals (Rapheal, 2014). The effects …

The Relationship Between Teacher Evaluation Ratings And Student Achievement In A Rural, Midwest School District, Margaret A. Mathus

Dissertations

While many factors have been identified as influencing student academic performance, previous studies consistently determined effective teaching as the most significant factor, within the control of educators, leading to improved student achievement. Nonetheless, educational experts, statisticians, and policy-makers alike acknowledged the complexity of isolating the contributions of individual teachers on their students’ achievement. Converging with these changing beliefs about teaching and learning, the landscape of education faced an additional challenge — marked by an increased demand for schools and individual teachers to be held accountable for the academic growth of his/her students. Local districts have been empowered to create and …

Assessment Of A Hand Exoskeleton On Proximal And Distal Training In Virtual Environments For Robot Mediated Upper Extremity Rehabilitation, Kevin Abbruzzese

Dissertations

Stroke is the leading cause of disability in the United States with approximately 800,000 cases per year. This cerebral vascular accident results in neurological impairments that reduce limb function and limit the daily independence of the individual. Evidence suggests that therapeutic interventions with repetitive motor training can aid in functional recovery of the paretic limb. Robotic rehabilitation may present an exercise intervention that can improve training and induce motor plasticity in individuals with stroke. An active (motorized) hand exoskeleton that provides support for wrist flexion/extension, abduction/adduction, pronation/supination, and finger pinch is integrated with a pre-existing 3-Degree of Freedom (DOF) haptic …

Sparsity Based Methods For Target Localization In Multi-Sensor Radar, Haley H. Kim

Dissertations

In this dissertation, several sparsity-based methods for ground moving target indicator (GMTI) radar with multiple-input multiple-output (MIMO) random arrays are proposed. MIMO random arrays are large arrays that employ multiple transmitters and receivers, the positions of the transmitters and the receivers are randomly chosen. Since the resolution of the array depends on the size of the array, MIMO random arrays obtain a high resolution. However, since the positions of the sensors are randomly chosen, the array suffers from large sidelobes which may lead to an increased false alarm probability. The number of sensors of a MIMO random array required to …

Improving Special Education Outcomes Through Policy, Teacher Practice, And Student Support: A Qualitative Study, Barbara J. Wolford

Dissertations

Purpose: The purpose of this grounded theory qualitative study was to discover the perceptions of special education directors regarding the changes in special education at the policy level, teacher practice level, and student support level necessary to improve the academic achievement of students with disabilities in California.

Methodology: The study employed an emergent approach to grounded theory. Grounded theory utilizes a homogenous sample of participants with similar backgrounds and experiences to allow for theory development. A series of face-to-face and phone recorded structured interviews addressing the research questions were conducted. The researcher transcribed and coded the interviews for emergent themes …

The Perceptions Of High School Principals In Three Central And Northern California School Districts On The Implementation Of Restorative Practices And Resistance To Change Through The Theoretical Lens Of Kotter’S Eight-Stage Change Model, Dena M. Fiori

Dissertations

Purpose: The purpose of this qualitative case study was to explore and describe the perceptions of high school principals in three Central and Northern California school districts on the implementation of restorative practices and resistance to change through the theoretical lens of Kotter’s eight-stage change model.

Methodology: For the purpose of this study, the case study method was used to answer descriptive and explanatory questions that focus on the what, why, and how the research occurred during the implementation of restorative practices (Yin, 2011). The purpose of conducting a descriptive case study was to understand further, via interviews, the perspectives …

Examining Constructs Of The Health Belief Model As Predictors Of Haitian Men's Intention Regarding Prostate Cancer Screening, Jhonii Price Louis Ii

Dissertations

The purpose of this study was to determine which of these selected constructs of the Health Belief Model (perceived susceptibility, perceived benefits, and perceived barriers) are predictors to the intention of Haitian men regarding prostate cancer screening. Other modifying variables were also considered as predictors to the outcome variable..

A Social Constructionist Inquiry Study On The Lived Experiences Of Educators With Dyslexia Overcoming Workplace Barriers And Increasing Their Capacity For Success, Kathryn R. Taylor

Dissertations

The purpose of this qualitative research is to journey the lives of educators with dyslexia growing up as K-12 students, working in the K-12 educational environment, and the means by which those educators overcome workplace barriers as analyzed by three guidelines under the Universal Design for Learning (UDL) principle, multiple means of engagement. The qualitative study was designed from a constructive inquiry perspective. This method allowed the researcher to construct reality by interpreting a group of educators’ perceptions based on their experiences and social dynamics living with dyslexia. The primary data was collected from one-on-one interviews guided by scripted questions. …

Dft Investigations Of Hygrogen Storage Materials, Gang Wang

Dissertations

Hydrogen serves as a promising new energy source having no pollution and abundant on earth. However the most difficult problem of applying hydrogen is to store it effectively and safely, which is smartly resolved by attempting to keep hydrogen in some metal hydrides to reach a high hydrogen density in a safe way. There are several promising metal hydrides, the thermodynamic and chemical properties of which are to be investigated in this dissertation. Sodium alanate (NaAlH4) is one of the promising metal hydrides with high hydrogen storage capacity around 7.4 wt. % and relatively low decomposition temperature of around 100 …

A Study Of Early Literacy Interventions On The College And Career Readiness Of High School Students Identified As Struggling Readers In First Grade, Ann Michele Willott

Dissertations

This study examined the college and career readiness of high school graduates who, as struggling first grade readers, successfully completed a specific, research based literacy intervention. By examining students’ Gates MacGinitie Reading Test (GMRT) scores (2002–2009), ACT PLAN test results from 10th grade, ACT test scores from 11th or 12th grade, and course enrollment throughout their high school careers, the degree to which the students were prepared to enter college or the work force was examined. College and career readiness was defined using guidelines and benchmarks outlined in the Common Core State Standards (National Governors Association Center for Best Practice, …

A Model For Anomalies Detection In Internet Of Things (Iot) Using Inverse Weight Clustering And Decision Tree, Ahod Alghuried

Dissertations

Internet of Things (IoT) is one of the fast growing technologies today. It is a technology by which billions of smart objects or devices known as “Things” can use several types of sensors to collect various types of data about themselves and/or the surrounding environment. They can then share this with authorized parties to serve several purposes such as controlling and monitoring industrial facilities or improving business service or functions. There are currently 3 billion devices connected to the Internet. The number will increase to 20 billion by 2020. While these devices make our life easier, safer and healthier, they …

A Comparison Of Supervised Machine Learning Classification Techniques And Theory-Driven Approaches For The Prediction Of Subjective Mental Workload, Dmitrii Gmyzin

Dissertations

In the modern world of technological progress, systems and interfaces are becoming more and more complex. As a consequence, it is a crucial to design the human-computer interaction in the most optimal way to improve the user experience. The construct of Mental Workload is a valid metric that can be used for such a goal. Among the different ways of measuring Mental Workload, self-reporting procedures are the most adopted for their ease of use and application. This research is focused on the application of Machine Learning as an alternative to theory-driven approaches for Mental Workload measurement. In particular, the study …

Departmentalized Classroom Environments Versus Traditional Classroom Environments In Second Through Fourth Grades: A Quantitative Analysis, Staci Janelle Ray

Dissertations

Since No Child Left Behind was introduced, kindergarten through 12th-grade educators have seen a dramatic increase in accountability, rigor of standards, and responsibilities in the classroom (New America Foundation, 2015). In order to meet the increased demands of federal education regulations in second through fourth grades, many administrators are looking for alternative methods to ensure student success (Gewertz, 2014). Departmentalization is one of the alternative methods being used (Jacobs, 2014). Educators believe departmentalization results in many benefits (Chan & Jarman, 2004); however, historical research has contradicted this view (American Association of School Administrators, 1965). With the demands of today’s standards …

The Challenge Of Leading Change: How Sources Of Authority And Change Management Models Intersect To Promote School Improvement, Samantha Joyce Lam

Dissertations

A gap in research exists that demonstrates how principals use their authority to make decisions and how that intersects with change management models. The purpose of the study is to examine how one elementary school principal has led change and how teachers perceive the effectiveness of the change. The study seeks to explore principal's and teachers' perceptions of the impact of the change on the school.

Through a bounded, qualitative case study design, the researcher used several techniques to gather data: teacher survey, principal interview, teacher interview, and document analysis. Multiple sources of data were used to adequately shed light …

Low-Fee Private Schools In West Africa: Case Studies From Burkina Faso And Ghana, Corinne Brion

Dissertations

Every year billions of dollars are spent on development aid and training around the world. However, only 10% of this training results in the transfer of knowledge, skills, or behaviors learned in the training to the work place. Ideally, learning transfer produces effective and continued application by learners of the knowledge and skills they gained through their learning activities. Some studies suggest that technology usage can serve as an effective post-learning intervention to enhance the transfer of learning.

Currently, there is a limited body of research examining the factors that hinder and promote learning transfer in professional development, particularly the …

The Impact Of After School Tutoring On Math Achievement: Perceptions Of African American Males And Those Who Teach Them, Eric L. Brown

Dissertations

Despite increases in overall academic achievement, African American males continue to struggle in the area of mathematics. Data from the National Assessment of Educational Progress (NAEP) indicates that eighth grade African American males had the lowest levels of mathematics success of all subgroups in 2013, with only 13% performing at or above the proficient performance level in math. An approach to increasing the academic achievement of African American males has been to provide extended learning time beyond the typical secondary education experience. After school programs are one such example. Many studies indicate that after school programs have had some positive …

Student Demographics And Perceptions Of The Cost-Sharing Program For Financing Higher Education In Tanzania And Their Relationship To Perceived Likelihood Of Student Loans Repayment, Protas A. Makimu

Dissertations

Problem and Purpose

All over the world, the costs of higher education are becoming unaffordable for people of low and middle socio-economic status. The rising costs of colleges and universities are outpacing any growth in incomes and the price increases of other indispensable needs such as medical care, food, clothing and housing. Tanzania is facing the same problem. Because the country has very low gross enrollment rate (GER) even in comparison to other African countries, the government has established the cost-sharing program to increase students’ access to higher educational institutions and enrollment. Therefore, the purpose of this research is to …

Towards Improving Visqol (Virtual Speech Quality Objective Listener) Using Machine Learning Techniques, Joseph Mcnally

Dissertations

Vast amounts of sound data are transmitted every second over digital networks. VoIP services and cellular networks transmit speech data in increasingly greater volumes. Objective sound quality models provide an essential function to measure the quality of this data in real-time. However, these models can suffer from a lack of accuracy with various degradations over networks. This research uses machine learning techniques to create one support vector regression and three neural network mapping models for use with ViSQOLAudio. Each of the mapping models (including ViSQOL and ViSQOLAudio) are tested against two separate speech datasets in order to comparatively study accuracy …

Exploring The Factors That Affect Secondary Student’S Mathematics And Portuguese Performance In Portugal, Lulu Cheng

Dissertations

Secondary education provides not only knowledge and skills, but also inculcates values, training of instincts, fostering right attitude and habits to enable adolescents to move into tertiary education or to ensure a workplace for students who decided to terminate their secondary schooling. Without secondary education to guide the development of young people through their adolescence, they will be ill prepared for tertiary education or for workplace, moreover, the possibility of juvenile delinquency and teenage pregnancy becomes higher. These negative effects will increase the pressures and expenditures on society and socio-economic. In 2006, Portugal was reported having the higher school-leaving rate …

The Influence Of Sensor-Based Intelligent Traffic Light Control On Traffic Flow In Dublin, Katja Rademacher

Dissertations

With growing cities and the increased use of vehicles for transportation purposes, there is a demand to make the traffic management in cities smarter. An intelligent traffic light control that dynamically adapts to the existing traffic conditions can help reduce traffic congestion and CO2 emissions. This thesis reviews the popular traffic light control approaches - static, actuated and adaptive – based on their influences on recorded traffic conditions in Dublin. The Irish capital relies heavily on busses for public transport adding to the number of already moving vehicles in the city centre. Using vehicle count data from inductive loop detectors …

Physical Human Activity Recognition Using Machine Learning Algorithms, Haritha Vellampalli

Dissertations

With the rise in ubiquitous computing, the desire to make everyday lives smarter and easier with technology is on the increase. Human activity recognition (HAR) is the outcome of a similar motive. HAR enables a wide range of pervasive computing applications by recognizing the activity performed by a user. In order to contribute to the multi facet applications that HAR is capable to offer, predicting the right activity is of utmost importance. Simplest of the issues as the use of incorrect data manipulation or utilizing a wrong algorithm to perform prediction can hinder the performance of a HAR system. This …