Digital Commons Network^™

Supporting User Evaluation Of Messaging Interactions With Potential Romantic Partners Discovered Online, Douglas Zytko

Dissertations

Online dating systems have transformed the way people pursue romance. To arrive at a decision to meet for a face-to-face date, users gather information about each other online pertinent to romantic attraction. Yet sometimes they discover on the date that they made the wrong choice. One aspect of online dating system-use that may be a contributing factor, but is largely overlooked in the literature, is interaction through text-based messaging interfaces. This dissertation explores how messaging interactions inform face-to-face meeting decisions through two qualitative studies, and explores through a mixed methods field study how innovative messaging interfaces that embody theory from …

Statistical Properties Of Population Stability Index, Bilal Yurdakul

Dissertations

Population stability is an important concept in model management. It is crucial to monitor whether the current population has changed from the population used during development of a model. For example, has the distribution of credit scores changed, and is the existing credit score model still valid? Population change may occur for many reasons–change in the economic environment, strategic change in the business, policy changes within the company, or changes in regulatory environment.

The population stability index (PSI) is a statistic that measures how much a variable has shifted over time, and is used to monitor applicability of a statistical …

Edge Induced Weightings Of Uniform Hypergraphs And Related Problems, Laars C. Helenius

Dissertations

The starting point of the research is the so called 1-2-3 Conjecture formulated in 2004 by Karoński, Luczak, and Thomason. Roughly speaking it says that the edges of any graph can be weighted from {1, 2, 3} so that the induced vertex coloring (as the sum of weights adjacent to a given vertex) is proper. The conjecture has attracted a lot of interest from researchers over the last decade but is still unanswered. More recently, the conjecture has been studied for hypergraphs.

The main result of this dissertation shows in particular that an analogous conjecture holds for almost all uniform …

Support Assurance-Based Software Development For Mission Critical Domains Using The Model Driven Architecture, Chung-Ling Lin

Dissertations

In the past decades, software development for mission critical applications has drawn great attention not only in various mission critical communities but also software engineering communities. One of the important reasons is that the failure of these systems can lead to some serious consequences such as huge financial loss and even loss of life. Therefore, software certification has become an important activity for mission critical applications in that software assurance for such a system should be certified. With the increasing complexity of a software system in mission critical sectors, certifiers have found hard time to understand how a software system …

Mixing Matching And Sabermetrics: Combining Advanced Analytics And The Generalized Matching Law In Nfl Football Play-Calling, Jacob Bradley

Dissertations

The fields of advanced analytics in sports and quantitative analysis of behavior as it applies to sports have developed independently over the last several decades. Both fields share the common goal of using a quantitative approach to describe and predict behavior within sports beyond the common traditional verbal accounts. To date, the two fields have not directly intersected. The current study provides an overview of advanced analytics and quantitative analysis of behavior in sports, demonstrates how the two fields can be combined to better account for the behavioral processes involved in decision-making in sports, and identifies several possible ways the …

Empirical Estimates Of Design Parameters Used In A Priori Power Analyses For Planning School-Randomized Studies In Select Asian Countries, Ran Shi

Dissertations

A cluster-randomized trial (CRT) is one type of randomized controlled trial (RCT) that is often more feasible for evaluating the effectiveness of an educational intervention due to the multi-level structure of the data (e.g., students nested in schools). In order for a CRT to generate rigorous evidence, it is essential that is it adequately powered to detect an effect of a given size. As such, it is common for researchers to conduct a priori power analyses to determine how large a sample the CRTs will require to detect an effect of a given magnitude. Previous work has shown that two …

A Mixed-Methods Study On Emotional And Social Intelligence And Grit In Graduate Students At A Private Four-Year University, Emilee S. Schnefke

Dissertations

The researcher observed, as an educator, administrator, and graduate student, college student’s withdrawal from school due to personal reasons or lack of determination. The study of Emotional and Social Intelligence (ESI) and grit enabled the researcher to learn about the traits or characteristics one must possess to achieve a goal, more specifically earning a college degree. The researcher tested hypotheses for a difference in ESI and grit scores among the studied population and sought the perception of ESI and grit through a mixed-methods study. The researcher measured the ESI and grit among Educational Leadership Specialists and Doctoral students and graduates …

A Mixed-Method Study Of Kindergarten Through Third-Grade Teachers’ Perceptions Of Homework, Tonya Heavin

Dissertations

This mixed-method research study examined the perceptions of kindergarten through third-grade teachers regarding the use of homework in their classrooms. Electronic surveys were sent to 190 kindergarten through third-grade teachers in seven school districts from five counties in Central Missouri. A total of 47 educators chose to respond to the open- and closed-ended questions. The results of this study showed most of the respondents believed in the benefits of homework for academic achievement. The quality and quantity of assigned homework were important characteristics for educators from both large and small school districts. The lack of parental support was considered one …

The Beliefs Of Secondary Teachers On Personalized Learning For Students Through The Use Of Instructional Technology, Christopher Jay Ford

Dissertations

Personalized learning for students has been an emerging trend which seeks to support teaching and learning in the 21st century (Netoch, 2017). This study identified beliefs of secondary educators on the different aspects of personalized learning for students. Areas covered in this study included teacher professional development on the personalized learning process, amount or quality of teacher support for the implementation of personalized learning, the impact of technology on personalized learning with classroom instruction, and any obstacles to the personalized learning process. Findings from this study were compared to identify connections between responses as they related to the research questions. …

A Mixed-Method Comparative Analysis Of First-Generation And Non-First-Generation Students In The Midwest, Juanika Q. Williams

Dissertations

The purpose of this study was to complete a mixed-methods comparative analysis of firstgeneration and non-first-generation students in the Midwest to determine potential differences between students’ college satisfaction, retention factors, college selection, college experience, and deciding factors on attending college at private, public, and Historically Black Colleges and Universities. The Primary Researcher believed that a students’ classifications (first-generation or non-first-generation) and the type of university that they chose to attend would yield different results in their overall college experiences. The Researcher conducted the study in different settings and did not compare by the type of university or the type of …

Impacts Of Cohort Membership On Teacher Candidates In An Alternative Certification Program, Katherine Eaton

Dissertations

Post baccalaureate teacher education programs are an effective way to increase the teaching pool with candidates who are content experts (Beijaard et al. 2004; Brantlinger, A., & Smith, B., 2013; Zeichner, K. M., & Schulte, A. K., 2001; Schultz, K., & Ravitch, S. M. 2013; Humphrey et al., 2008). Many of these programs utilize a cohort model design where students progress through the program together as a group (Maher, M. A. 2005; Jorissen, K. T., 2002; Ross et al., 2006; Mandzuk, D. et al., 2005). In his book, Deep Knowledge (2013), Larkin describes the complex nature of preparing candidates for …

Mapping And Interpreting The Glacial Geology Of Pictured Rocks National Lakeshore, Michigan, Sarah M. Vandermeer

Dissertations

Pictured Rocks National Lakeshore is among the most popular parks in Michigan, yet prior to this study, it was the only National Park that lacked a detailed surficial geology map characterizing the distribution of sediments and landforms. Additionally, much of the landscape remained unexplored. These factors prevented thorough interpretations of landscape development and evolution. This research aims to map and further explore the relationship of glacial sediments and landforms throughout Pictured Rocks to refine and expand the current understanding of glacial events that shaped this landscape.

A new, detailed (1:24,000-scale) surficial geology map of the ten 7.5-minute quadrangles that contain …

Exploring The Use Of Hierarchal Statistical Analysis And Deep Neural Networks To Detect And Mitigate Covert Timing Channels, Omar Darwish

Dissertations

Covert timing channels provide a mechanism to transmit unauthorized information across different processes. It utilizes the inter-arrival times between the transmitted packets to hide the communicated data. It can be exploited in a variety of malevolent scenarios such as leaking military secrets, trade secrets, and other forms of Intellectual Property (IP). They can be also used as a vehicle to attack existing computing systems to disseminate software viruses or worms while bypassing firewalls, intrusion detection and protection systems, and application filters. Therefore, the detection and mitigation of covert channels is a key issue in modern Information Technology (IT) infrastructure. Many …

A Holistic Computational Approach To Boosting The Performance Of Protein Search Engines, Majdi Ahmad Mosa Maabreh

Dissertations

Despite availability of several proteins search engines, due to the increasing amounts of MS/MS data and database sizes, more efficient data analysis and reduction methods are important. Improving accuracy and performance of protein identification is a main goal in the community of proteomic research. In this research, a holistic solution for improvement in search performance is developed.

Most current search engines apply the SEQUEST style of searching protein databases to define MS/MS spectra. SEQUEST involves three main phases: (i) Indexing the protein databases, (ii) Matching and Ranking the MS/MS spectra and (iii) Filtering the matches and reporting the final proteins. …

Statistical Models For Correlated Data, Xiaomeng Niu

Dissertations

Correlated data arise frequently in many studies where multiple response variables or repeatedly measured responses within subjects are correlated. My dissertation topic lies broadly in developing various statistical methodologies for correlated types of data such as longitudinal data, clustered data, and multivariate data.

Multiple response variables might be relevant within subjects. A univariate procedure fitting each response separately does not take into account the correlation among responses. To improve estimation efficiency for the regression parameter, this study proposes two estimation procedures by accommodating correlations among the response variables. The proposed procedures do not require knowledge of the true correlation structure …

A Model For Propagating Educational Innovations In Higher Stem Education: A Grounded Theory Study Of Successfully Propagated Innovations, Raina Khatri

Dissertations

A critical problem in undergraduate science, technology, engineering, and mathematics (STEM) education is the slow uptake of innovative teaching strategies and materials. Developments from the STEM education research community can be shown to improve learning and retention outcomes, but the majority of new teaching strategies go unused by instructors. This problem is increasingly acknowledged by funding agencies such as the National Science Foundation, which now calls for “transferability and propagation” to be addressed throughout a project’s lifetime in the request for proposals. However, few publications synthesize what is known about propagating innovations into usable, actionable recommendations for developers in the …

Denoising Large Neuroimage Mri Data Using Spatial Random Effect Models, Leonard Chukuma Johnson

Dissertations

Spatial smoothing in Magnetic Resonance image (MRI) involves applying a filter to remove high frequency information and consequently improves signal-to-noise ratio that can greatly aid neurosurgeons in pre-surgical planning stages of tumor resection. This immensely reduces the time spent on Electrical stimulation mapping (ESM) prior to surgery. MRI's three-dimensional data provides voxel intensities with complex spatial relationship. The standard de facto spatial smoothing method, Gaussian Kernel smoothing, is satisfactory since a uniform smoothing is done for the whole brain. Secondly, the kernel smoothing technique assumes normality for the voxel intensity, but there is ample evidence in current research that indicates …

Elucidation Of The Toxicity Of Anthropogenic Nanoparticles In Environments Containing Heavy Metals, Chartanay Bonner

Dissertations

The design, synthesis, and applications of anthropogenic nanoparticles continue to rise as technologies utilizing the unique chemical and physical properties of materials with nanoscale dimensions emerge. Engineered silver nanoparticles (Ag NPs) possess antimicrobial properties toward several strains of antibiotic-resistant bacteria. The manufacturing and use of Ag NPs have led to their increased presence in the environment as pollutants. The interaction of Ag NPs with other pollutants influence their surface properties, aggregation state, stability and consequently, their toxic response toward microbial pathogens. In the present study, we examined the interaction of heavy metal ions (Cd²⁺, Hg²⁺, and …

Using Agent-Based Implementation Of Active Data Bundles For Protecting Privacy In Healthcare Information Systems, Raed M. Salih

Dissertations

Sharing healthcare information—including electronic health/medical records (EHRs/EMRs)—among healthcare information systems is necessary for improving the quality of healthcare. However, facilitating data exchange increases privacy threats—due to easier copying and dissemination of healthcare information.

We propose a solution that provides privacy protection for patients’ EHRs/EMRs disseminated among different authorized healthcare information systems. Our solution builds upon the existing construct named an Active Data Bundle (ADB). In the proposed solution, ADBs keep EHRs/EMRs as sensitive data; include metadata describing sensitive data and prescribing their use; and encompass a policy enforcement engine (called a virtual machine or VM), which …

Preparedness Of First Responders In Gwinnett County, Georgia: Barriers To Preparedness And The Impact Of Cognitive Biases, Jeffrey Lee Smith

Dissertations

While it is important for the public to be prepared for emergencies and disasters, it is perhaps more important for first responders, as members of the public, to be prepared for emergencies and disasters, so they may do the job the public expects of them. This study explores the preparedness of first responders in a large, diverse, and heavily populated metro-Atlanta county. It also investigates impediments to these first responders being better prepared and the role cognitive biases play in preparedness for this group. The study finds that the study population, as a whole, is underprepared. The research also reveals …

Organizational Change Plan For Closing The Black And White Achievement Gap, Markisha Mitchell

Dissertations

Abstract

Across the United States in almost every city, every suburb and every rural area there is a gap between the achievements of Black and White students. The term “achievement gap” has become an accepted label in situations where Black students severely underperform relative to their White counterparts. Many school Districts have discretely avoided discussing and or addressing this gap for decades. School District Z, located in an urban suburb just outside of a large midwestern city, is the focus of this research as they attempt to address the gap. Approximately two-thirds of District Z is composed of students of …

Educational Policy Development For Closing The Black And White Achievement Gap, Markisha Mitchell

Dissertations

Abstract

Across the United States in almost every city, every suburb, and every rural area, there is a gap between the achievements of Black and White students. The term “achievement gap” has become an accepted label in situations where Black students severely underperform relative to their White counterparts. Many school districts have discretely avoided discussing and/or addressing this gap for decades. School District Z, located in an urban suburb of a large Midwestern city, is the focus of this research as they attempt to address the gap. Approximately two-thirds of District Z is composed of students of color, yet the …

An Exploratory Study Of The Role Of Soft Skills In The Training And Employability Of High School Graduates, Felita Sharmett Williams

Dissertations

Research has shown that both educators and prospective employers agreed that students needed more than just ‘hard skills.’ Instead of focusing only on students meeting the academic requirements needed to graduate with a diploma, students also needed to work toward mastering social and emotional skills such as ‘soft skills.’ This study consists of five parts; (i) seeking information from employers associated with the target school; (ii) seeking information from parents of students in the target school; (iii) the researcher crafted intervention for students based on the literature on soft skills, (iv) the researcher completed intervention in two area churches, and …

Nelly Don: An Educational Leader, Lisa S. Thompson

Dissertations

In 1916, Ellen Quinlan Donnelly aka Nelly Don started a fashion empire from her humble Kansas City home. She became one of the wealthiest and most celebrated American women in business with a career that spanned well into the 1960s. The Nelly Don Empire reportedly sold more dresses in the 20th century than any other single person in the United States, and she started as a Lindenwood College student. This study investigated Nell Quinlan Donnelly the “Grand Lady” of the garment industry beyond her millionaire status and revolutionary business leadership at Donnelly Garment Company. The reexamination of Nell Quinlan Donnelly’s …

Supports Provided To Improve Schools In Need Of Intensive Supports In Chicago Public Schools (Cps) Evaluation, Jeffrey Alstadt

Dissertations

The program evaluation examined systems provided to schools in the city of Chicago which needed intensive supports. This was done by evaluating qualitative and quantitative data. Much of the qualitative data was derived from interviews, while the majority of the quantitative data was compiled through Chicago Public Schools’ publically accessible data system. There were many advantages to looking at only the schools needing intensive supports. There were many similarities in these schools which helped strengthen and align with the qualitative data produced from the individuals interviewed. There were also publically released studies that validated the qualitative data from this study. …

Utilizing Parent Support Groups To Improve Parenting Efficacy And Relationships For Parents Of Inattentive, Hyperactive, Or Non-Compliant Children, Deborah Rickman Hake

Dissertations

School age children with ADHD suffer functional impairment in social development, show signs of emotional dysregulation, and have learning difficulties. Other psychological disorders may present, and some children may have one or more comorbid disorders. Studies demonstrated that the best practice was combined treatment. It was recommended that a pharmacological and behavioral approach be utilized. ADHD also affects the family. Parents of children with ADHD often neglect their own health caring and advocating for their child. The amount of parent involvement raising a child with ADHD can lead to reactive parenting, strained relationships with spouses, social and emotional isolation, depression, …

Experiences Of Underrepresented Minority Students In Health Professions Programs, And Their Journeys To The Programs, Alisha L. Davis

Dissertations

Classified as a public health concern, the lack of underrepresented minorities (URMs) in the U.S. health care workforce is still prominent today, even with the increase of URM groups having reached historic numbers of representation within the United States. It is projected that by 2050, URM groups will replace Whites as the majority, yet Whites currently make up the majority of the health care workforce. URM health professionals are more likely to provide accessible and culturally competent health services, and practice in racially and ethnically diverse communities. This helps to eliminate health care disparities, and reduces inequities found in …

Geochemical And Radiological Baseline Studies And Environmental Impact Of The Area Surrounding Barakah Nuclear Power Plant, Uae, Mouza Rashed Mohamed Al Rashdi

Dissertations

Geochemical, mineralogical and natural radiation analysis techniques were used for establishment of geochemical and radiological baseline around Barakah Nuclear Power Plant, UAE. The natural radioactivity concentrations of ²³⁸U (²²⁶Ra), ²³²Th and ⁴⁰K were measured for soil, shore and bottom sediment samples, using gamma spectrometry equipped with HPGe detector. In addition, alpha spectrometry was used to measure ²³⁴U/²³⁸U ratio for some selected samples. Furthermore, inductively coupled plasma atomic emission spectroscopy was used to measure the concentrations of heavy metals and Rare Earth Elements (REE). The grain size of the samples ranged from fine …

Perceptions Of American Latino Families Of Their Children's Education: Stories From One Suburban Middle School, Jeffry Prickett

Dissertations

The immigration debate in the United States has been ongoing for decades. While the outcome of the debate means more for some than others, one thing is always a constant: there are families behind every story of immigration. To uncover some of these stories, four American Latino immigrant families were interviewed about their experience with assimilation and factors associated with the academic success of their children. The children of the families attended a rapidly diversifying mid-western suburban middle school. The primary research question was: what are the perceptions of Latino parents regarding their children’s education in their neighborhood school? Themes …

Chicago Public Schools (Cps) Systems To Support Administrators Plan, Jeffrey Alstadt

Dissertations

Wagner et al.’s (2010) change leadership model was used to assess culture, context, conditions, and competencies of a large, diverse urban school district to create a systemic plan for supporting building level administrators. Interviews were conducted with former building level administrators, teachers, and staff who worked with building level administrators within the district. Results indicated overwhelming support for the building level administrators in the district. Strategies for implementation included: creating professional learning communities, leading adult learning, and developing leadership capacity. To achieve the much-needed changes, CPS personnel must be ready for a complete change in thinking, and it will take …