Digital Commons Network^™

A Mixed Methods Evaluation Of The Social Emotional Needs Of Middle School Students, Vicky Karahalios

Dissertations

Middle school is a critical transition for all school-aged youth. On a personal level they experience rapid changes across several areas of development. Their environment simultaneously adapts as schools’ expectations seem greater and social pressures arise. During this juncture, they are more vulnerable to academic and psychological difficulties. Research findings demonstrate how positive school climates have the ability to moderate the detrimental effects of middle school students’ self-criticism on internalizing and externalizing behaviors (Kuperminc, Leadbeater, & Blatt, 2001). Historically schools have responded to the social emotional challenges students face at an individual level, however these finding points to the importance …

Use Of Hyperspectral Images (Hsi) And Convolutional Neural Network (Cnn) To Identify Normal, Precancerous And Cancerous Tissues, Pallavi Jain

Dissertations

Cancer detection has been a great topic of research for a long time, as early detection of cancer can help in increasing the survival rate of patients by providing on time better treatment. A robust system is required in order to detect early-stage cancer as its difficult to identify early-stage cancer from the normal clinical process. The computer vision techniques provide a new way to understand the challenges related to the medical image analysis. This thesis presents the medical image analysis using a combination of Convolutional Neural Network and Hyperspectral Images of cancer patient's tissues. The idea behind choosing the …

Predicting Happiness - Comparison Of Supervised Machine Learning Techniques Performance On A Multiclass Classification Problem, Dorota Nieciecka

Dissertations

In the modern world, especially in contemporary economies and politics, a population's subjective well-being is a frequent subject of the public debate. As comparisons of happiness levels in different countries are published, different circumstances and their effect on the value of the subjective well-being reported by people are also analysed. However, a significant amount of the research related to subjective well-being and its determinants is still based upon survey answers and employing conventional statistical methods providing details regarding correlations and causality between different factors and subjective well-being. Application of Supervised Machine Learning techniques for prediction of subjective well-being may provide …

A Demographic Analysis To Determine User Vulnerability Among Several Categories Of Phishing Attacks., Robert Griffin

Dissertations

Phishing attacks have been on a meteoric rise in the last number of years, with 2016 seeing a 65% increase. The attacks range from targeting individuals with personalised messages to spam attacks from bot accounts. With the chances of being targeted by a phishing attack increasing, it is important to identify who is most at risk in order to help alleviate this threat. The aim of this study is to examine members from several demographics and their vulnerability to three types of phishing using data collected from a survey (n = 198). The survey tested the participant’s ability to recognise …

An Investigation Into Factors Which Explain The Scores And Voting Patterns Of The Eurovision Song Contest., Oisín Leonard

Dissertations

The Eurovision Song Contest (ESC) is an annual international television song competition. Participating countries send a group or individual artist to perform an original song at the competition. The winner is decided by all participating countries using a voting system that incorporates both a public televote and an expert jury vote. Countries are excluded from voting for their entry and the country with the highest score wins. A high scoring performance and the voting patterns of the ESC can be explained by a complex set of factors. These factors can be divided into three groups; performance factors, competition factors and …

Image Classification Using Bag-Of-Visual-Words Model, Kaiqiang Huang

Dissertations

Recently, with the explosive growth of digital technologies, there has been a rapid proliferation of the size of image collection. The technique of supervised image clas sification has been widely applied in many domains in order to organize, search, and retrieve images. However, the traditional feature extraction approaches yield the poor classification accuracy. Therefore, the Bag-of-visual-words model, inspired by Bag-of Words model in document classification, was used to present images with the local descriptors for image classification, and also it performs well in some fields. This research provides the empirical evidence to prove that the BoVW model outperforms the traditional …

A Javascript Framework Comparison Based On Benchmarking Software Metrics And Environment Configuration, Jefferson Ferreira

Dissertations

JavaScript is a client-side programming language that can be used in multi-platform applications. It controls HTML and CSS to manipulate page behaviours and is widely used in most websites over the internet. JavaScript frameworks are structures made to help web developers build web applications faster by offering features that enhance the user interaction with the web page. An increasing number of JavaScript frameworks have been released in recent years in the market to help front-end developers build applications in a shorter space of time. Decision makers in software companies have been struggling to determine which frameworks are best suited for …

That Seems Made Up: Deep Learning Classifiers For Fiction & Non Fiction Book Reviews, Clement Manger

Dissertations

The thesis aims to take the first step towards automated extraction of the information found in book reviews, by using machine learning tools to assign a label of fiction or non fiction to the text. The thesis makes use of neural networks and performs experiments around architecture, hyper-parameters and text processing from which an optimized model is produced. The thesis enjoys certain successes; it was possible to match the state of the art achieved by (Kim, 2014) and computation was sped up considerably from the default to the optimized model by 13.8 seconds per 50 steps. Further it is confirmed …

Identifying Expert Investors On Financial Microblog Via Artificial Neural Networks, Pierluca Del Buono

Dissertations

In the recent years, thanks to social media platform, a plethora of information has been available to financial investors, that were traditionally dependent from financial institutions advisors. Strategies are now shared among web users, performances of stocks are commented in web communities and hints and suggestions are travelling on the internet with a fast pace, in a way that was unthinkable few years before. Several attempts have been made in the recent past, to predict Market movements and trends from activity of Financial Social Networks participants, and to evaluate if contributions from individuals with high level of expertise distinguish themselves …

Surface Modification For The Improvement Of Metal/Organic Semiconductor Interfaces, Jonathan Paul Hopwood

Dissertations

Organic electronics have become much of the forefront of scientific research due to their advantages over tradition electronics as well as their applications in consumer devices, medical devices, and harnessing renewable sources of energy. Despite their appeal, two major obstacles are responsible for poor performance and limited applications. These problems occur at the interface between the two main components of the devices, the organic semiconductor and the metal electrodes. The first, high electrical resistance, is a result of the misalignment between the metal’s free electrons and the organic semiconductor’s conduction band. We seek to capitalize on this misalignment using light-responsive …

Affect And Cognitive Control: The Influence Of Naturalistic Mood On Interference Processing, Lorri A. Kais

Dissertations

Every day planning and execution of goal-directed human performance is dependent upon cognitive and emotional processes that are inherently interlinked. However, the effect of naturalistic mood states on cognitive control remains relatively unexamined. The present study builds upon existing literature regarding affective and executive processes by investigating the relationship between naturally occurring positive mood state and interference processing during a modified Color-Word Stroop Task (CWST). To further clarify the time course and recruitment of neural resources during different conditions of the CWST the present study utilized event-related potentials (ERPs). Incongruent stimuli were compared to congruent stimuli in blocked (same congruency) …

Biophysical Studies Of Guanine Nucleotide-Binding Alpha Subunits, Brian Leverson

Dissertations

Guanine nucleotide-binding (G?) proteins have been intensely studied over the years due to their role as signal transduction proteins. Proper function depends on three flexible switch regions that are involved in the relatively slow hydrolysis of GTP, allowing for the proteins to act as a molecular on/off switch. The structure of a protein is essential to its biological function. Occurrences of mutations in the genes GNAS and GNAI1 to highly conserved arginine residue in the switch II region have been detected in several types of cancers.

Utilizing the combinations of temperature denaturation, kinetics assays, and molecular dynamics, we plan to …

Application Of Synthetic Organic And Medicinal Chemistry Toward Medical Advances In Cancer, Antibiotics, And Drug Delivery, Marlon Lutz

Dissertations

Cancer and bacterial infections are a great concern in our society and have affected populations worldwide. The objective of this research was to discover new therapies for treating bacterial infections and cancer, and for promoting drug delivery.

DapE is an essential component in succinylase biosynthetic pathway, which is critical to production of lysine and m-DAP which both are essential in protein synthesis and bacterial peptidoglycan cell wall construction. Synthetic approaches were developed to prepare a new substrate for the N-succinyl-L,L-diaminopimelic acid desuccinylase (DapE) enzyme enabling the discovery of new antibiotics that inhibit DapE.

MMPs are over expressed in cancer, in …

Estimating The Prevalence Of Hepatitis C In Sub-Saharan Africa, William Howard Adams

Dissertations

Hepatitis C (HCV) is a virus transmitted via contact with contaminated products such as razor-blades or by engaging in high-risk activities (i.e., such as sexual or injecting drug-use activities). Today, there are an estimated 115 million people world-wide living with HCV. Despite recent advancements in antiviral treatments that can ameliorate (or even cure) HCV, treatment remains laborious and costly and is often unavailable in resource-poor areas such as Sub-Saharan Africa (SSA). The primary aim of this study was to estimate the prevalence of HCV in SSA.

A meta-analysis was conducted on the HCV epidemic in SSA. A literature search for …

Home/School Collaboration And The Development Of A Growth Mindset Within Gifted Students, Lauren A. Carlson

Dissertations

Studies show that curricula related to mindset can have a positive effect on increasing growth mindset in students. Literature also suggests that messages students receive from parents about their skills and hard work can have implications for mindset development. In this project, the researcher explored the knowledge, exposure, and involvement of parents of gifted students in a small suburban K-8 school district with regard to growth mindset instruction. The researcher also explored how teachers can increase home school collaboration in regards to growth mindset concepts. The researcher used a survey questionnaire and a semi-structured interview through a focus group format …

Examining The Experiences Of Latinx Stem Baccalaureates, Marlene Chavez

Dissertations

Examining the Experiences of Latinx STEM Baccalaureates is a qualitative research study of Latinx who graduated with a bachelor's degree in an area of Science, Technology, Engineering, and Math (STEM). The purpose of this dissertation was to learn about the experiences of Latinx who have attained a STEM degree at a four-year university. This study holds implications for educational institutions, policymakers, and educational researchers that serve Latinx populations. More importantly, this dissertation will share the voices and knowledge of Latinx that have attained STEM.

This dissertation examined the following questions: What are the undergraduate educational experiences of Latinx students who …

The Relationship Between Neighborhood Characteristics And College Academic Outcomes Among An Ncaa Division I Student-Athlete Population: A Multilevel Approach, Ann Kearns Davoren

Dissertations

Over 170,000 students participate annually in National Collegiate Athletic Association (NCAA) Division I sports. Approximately one-third of these student-athletes fail to graduate from their initial school of enrollment within six years. While some will go on to graduate from a transfer institution, roughly 15% will fail to earn a degree while competing for an NCAA Division I school. Using U.S. census block group data, this study adds the neighborhood characteristics of education, employment, income, and racial composition to prediction models of first-year GPA and six-year baccalaureate degree attainment among an NCAA Division I student-athlete sample. The use of multilevel modeling …

The Relationship Between Secondary Students' Mathematics Identities, Problem Solving, And Self-Regulation, Katie Laskasky

Dissertations

This mixed methods study explores secondary students' math identities. The primary purpose of this dissertation is to examine the relationships among students' math identities, their perceived problem solving practices, and their perceived self-regulated learning strategies. This study holds implications for teachers, school administrators, instructional coaches, teacher preparation professionals, policy makers, and educational researchers who influence the education of secondary math students.

This dissertation examines the following research questions: What is the relationship between secondary students' math identities, their perceived problem solving practices, and their perceived self-regulated learning strategies? What is the relationship between problem solving, self-regulation, and math identity given …

The Exemplary High School Principal: A Mixed Methods Study Of How Personal Motivation And Professional Core Values Influence The Practice, Priorities And Decisions Of Award-Winning School Leaders, Erin Luby

Dissertations

This study of award-winning high school principals was designed to distill lessons from highly effective school leaders. The research explored how personal motivation and professional core values influence the practice, priorities and decisions of exemplary principals. The research followed a sequential explanatory mixed methods design. Participants included school leaders across a 10-state region who won their State Principal of the Year award from 2007 to 2017. The first phase of data collection utilized a survey, and the second phase was comprised of semi-structured interviews.

Principals indicated they were motivated to become educators because of their desire to have a positive …

Numerical Methods And Simulation For Time Dependent Electrokinetic Flow, Rui Cao

Dissertations

Electrokinetic flow typically occurs when an electric field is applied to a fluid electrolyte in the presence of a boundary or interface. The electric field induces a force that causes oppositely charged ions to migrate in opposite directions while simultaneously diffusing due to Brownian motion. In an unbounded medium this process, which is called electrodiffusion, does not separate bulk electric charge into separate regions and causes no bulk motion of the host fluid solvent. However, in the presence of a boundary or interface that either impedes or is impervious to the movement of ions in the normal direction, the normal …

Evaluating The Impact Of Adopting 3d Printing Services On The Retailers, Sharareh Rajaei Dehkordi

Dissertations

As additive manufacturing technology becomes more responsive to consumers’ demand, one important question for the retailers is whether they should provide 3D printing services in their brick-and-mortar store in addition to the traditional off-the-shelf product? If so, what should be the retailers pricing scheme to achieve a higher profit? What should be the optimal inventory level of off-the-shelf products? What is the optimal capacity of 3D printers? In this study, stochastic models are examined to capture the joint optimal 3D product price and capacity of 3D printers to maximize retailer’s expected profit while considering consumer product choices. Moreover, a stochastic …

Validation Of The Multilayered Gender Identity Questionnaires, Philip Eiseman

Dissertations

Gender identity shapes the ways transgender adults experience themselves and relate to the world around them. Although research and theory suggest that gender identity is a multidimensional construct, most measures of gender identity have viewed gender as primarily a unitary construct tied to the gender binary. The aim of this study was to develop and validate the Multilayered Gender Identity Questionnaires (MGIQ), a set of measures of gender identity, in a sample of transgender adults. Qualitative data collected through focus groups with transgender adults (N = 7) helped refine and develop these measures. A series of analyses involving a …

Latino Male College Students' Identities, Psychological Stress, And Coping Mechanisms, Ana E. Ramirez

Dissertations

Latino male college students’ identities impact their personal experiences, academic achievement, and well-being. This qualitative study uses a narrative inquiry approach to research Latino male college students’ racial and ethnic, gender, and academic identities and to investigate how these identities impact their psychological stress and the coping mechanisms they implement to manage their stress. Latino males undergo an identity development in which they engage in negotiating their gender identities in order to prioritize higher education academic requirements. When Latino males are determined to achieve a college degree, they are able to adjust their familism gender role expectations and shift their …

Examining The Role Of Arts Education Partnerships In Sustaining Arts Programs In California Elementary Schools, Marie-Helene Bauguil

Dissertations

This study investigated three arts education partnerships in California elementary schools. The research questions that guided the inquiry were exploratory in nature and intended to reveal the day-to-day functioning of these partnerships, the challenges they faced, and the factors that contributed to their success, through the recounted experiences of the various institutional actors involved. The participants (n=21) comprised school principals and teachers, arts organizations administrative staff, and teaching artists. Qualitative inquiry methods (in-person interviews, classroom observations, and review of relevant documents) were used to analyze the data. The findings showed that the schools’ administrators and faculty appreciated the arts residencies, …

Interference Unmixing And Estimation Technique For Improvement Of Speech Separation Performance, Ankur Maurya

Dissertations

Presence of noise in the speech can sometimes become annoying as it can lead to loss of important data or create misunderstandings between the communications area which can lead to major problems associated to loss of time and money. This thesis focuses to filter out noise form a speech signal which is simulated in Matlab/Octave software while making a comparison between temporal resolution of signal with respect to the spectral resolution of the signal in which the parameters such as the size of window length are varied in order to obtain the best speech separation performance. To get the best …

Supporting A Growth Mindset In High School Classroom Teachers, Peter Abboud

Dissertations

Purpose. The purpose of this qualitative case study was to identify and describe the strategies that California public high school principals utilized to develop a growth mindset in classroom teachers.

Methodology. This qualitative case study used interviews from 12 high school principals to gain an understanding for how they supported a growth mindset in their classroom teachers. The population for the case study was northern California high school principals, and the sample included high school principals from Napa, Sonoma, Solano, Marin, Alameda, and Contra Costa counties. To participate in the study, principals needed to be serving in at …

Alabama Classroom Teachers Who Participated In Arts Integration Workshops And Their Implementation Of Music Into The Core Curriculum, Laurie Martin

Dissertations

Effective teachers employ instructional strategies that enhance student engagement and can positively affect student learning. This qualitative study investigated the instructional practices and experiences of classroom teacher who implement music into the academic lesson to increase student engagement and enhance learning.

The Influence Of Culturally Relevant Pedagogy In Mississippi Public Schools To Improve Adolescent African American Males' Literacy Achievement, Shawnese Davis

Dissertations

This study used a quantitative approach to measure Mississippi secondary teachers’ understanding and their extent of using culturally relevant pedagogy to increase students’ literacy performance, specifically African American males. The researcher identified school districts with 50% or more African American students. The data collected in this study was used to compare reading high growth (40%) school teachers’ use of culturally relevant pedagogical teaching approaches to determine if there was a statistically significant difference in their understanding and frequency of using culturally relevant pedagogy to increase students’ reading performance. A 38-statement survey instrument was adapted from McKinley’s Strategies and Behaviors of …

Mississippi Choices And The Influence Of Career And Technical Education, Charish Rene Pierce

Dissertations

Mississippi counselors serve in a variety of roles in order to meet the needs of all students. The role of the school counselor is to execute efforts to address each student’s academic, personal/social, and career development needs (ASCA, 2005). Middle and high school counselors are often tasked with activities that do not align with national and state standards for school counseling. Thus, these activities generate very little time for activities such as the Choices program and career development.

This study examined the middle and high school counselors’ usage of the Choices program. In addition, the research study explored middle and …

Historical Change Of Seagrasses In The Mississippi And Chandeleur Sounds, Linh Thuy Pham

Dissertations

Seagrasses are important coastal resources facing numerous stressors, and losses have been documented from local to global assessments. Under the broad theme of habitat loss and fragmentation, a study of historical change in total area and landscape configuration of seagrasses in the Mississippi and Chandeleur Sounds was conducted. Mapping data was collated from a multitude of previous projects from 1940 to 2011.

Comparisons of seagrass area among various studies that used different mapping methods can result in overestimation of area change and misleading conclusions of change over time. The vegetated seagrass area (VSA) data were generalized to a common resolution …