Digital Commons Network^™

Software Quality Control Through Formal Method, Jialiang Chang

Dissertations

With the improvement of theories in the software industry, software quality is becoming the most significant part of the procedure of software development. Due to the implicit and explicit vulnerabilities inside the software, software quality control has caught more researchers and engineers’ attention and interest.

Current research on software quality control and verification are involving various manual and automated testing methods, which can be categorized into static analysis and dynamic analysis. However, both of them have their own disadvantages. With static analysis methods, inputs will not be taken into consideration because the software system isn’t executed so we do not …

A Framework For Using Fused Image Data In Statistical Process Control, Shengfeng Chen

Dissertations

The use of image data in manufacturing quality control systems has grown rapidly over the years. Technological advancements in imaging devices (e.g., digital cameras, x-ray scanners, infrared cameras) have provided convenient and cost-effective ways to obtain images. These images contain important quality features (e.g., textures and product dimensions) that can be used to monitor, diagnose, predict, and control manufacturing processes. A key tool for monitoring images is statistical process control charts. Integrating images of parts to detect process shifts can significantly improve a quality systems efficiency. Unfortunately, appropriate techniques that take full advantage of data-rich images for control charting are …

Essays On Climate Change-Related Extreme Events, Alvin E. Harris

Dissertations

There are increasing and urgent calls for global economies to join in the fight against the impacts of climate change (World Bank, 2020). With reports such as the World Bank (2020) of climate change costing billions of dollars in losses for economies, the purpose of my dissertation is to examine the effects of climate change-related extreme events and their potential economic effects in three areas: agriculture, migration, and the labor market.

My first essay focuses on the factors that influence farmers’ perception of risk and adaptive strategies against the effects of climate change-related extreme events. I examine whether farmers’ social …

A Comprehensive Security Approach On Data Race Detection And Deepfake Defense, Yu Guo

Dissertations

In the past decades, even the computer techniques have a significant improvement. The topic about security will be never out of date.

To meet with the requirement of computation, the number of CPU cores has changed from single core to multi-cores. At the same time, the multi-thread programs are also proposed to maximize the advantages of multi-core computing power. While even the performance has been improved, but it also brings some new issues which were never happened on sequential programs called current bugs. Data race is a major type of current bugs, it is happened when multiple threads access the …

Counselor Education Doctoral Students’ Experiences As Developing Gatekeepers, Diana Charnley

Dissertations

This phenomenological study sought to understand and describe the gatekeeping experiences of counselor education doctoral students and enumerate key influences in their learning and development. A national sample of 75 doctoral students responded to the descriptive pre-screening survey, and a sub-sample of 15 completed semi-structured interviews. Using interpretative phenomenological analysis, two overarching or meta-themes and five main themes were identified pertaining to how doctoral students view their role as gatekeeper and how they learn and experience gatekeeping. Meta-themes included doctoral students feeling “in the middle”, especially between faculty and master’s students, and how they are working to address these uncertainties, …

Maia And Admonita: Mandatory Integrity Control Language And Dynamic Trust Framework For Arbitrary Structured Data, Wassnaa Al-Mawee

Dissertations

The expansion of attacks against information systems of companies that operate nuclear power stations and other energy facilities in the United States and other countries, are noticeable with potential catastrophic real-world implications. Data integrity is a fundamental component of information security. It refers to the accuracy and the trustworthiness of data or resources. Data integrity within information systems becomes an important factor of security protection as the data becomes more integrated and crucial to decision-making. The security threats brought by human errors whether, malicious or unintentional, such as viruses, hacking, and many other cybersecurity threats, are dangerous and require mandatory …

Accumulation Of Polar Vorticity On Giant Planets: Towards A Three-Dimensional Theory, Shawn R. Brueshaber

Dissertations

My research investigates the polar atmospheric dynamics of the giant planets: Jupiter and Saturn (gas giants), and Uranus and Neptune (ice giants). I conduct my research modifying and applying the Explicit Planetary Isentropic Coordinate global circulation code to model the polar regions of the four giant planets.

The motivation behind my research is to uncover the reason why giant planet polar atmospheric dynamics differ. Jupiter features multiple circumpolar cyclones arranged in geometrical configurations, whereas Saturn features a single pole-centered cyclone. Uranus and Neptune also appear to have single pole-centered cyclones, albeit, larger than those on Saturn. …

An Evaluation Of Different Measures Of Social Problem-Solving: Using Ecological Momentary Assessment, Dana B. Goetz

Dissertations

The present study recruited a sample of undergraduate college students and examined the extent to which three measures of social problem-solving measured the construct of social problem-solving. A self-report measure (i.e., Social Problem-Solving Inventory-Revised Long), analogue task (i.e., the Means-Ends Problem-Solving task), and ecological momentary assessment (i.e., a diary card on real-life events) were compared. It was hypothesized that the three measures would assess different aspects of social problem-solving. The analogue task would theoretically be a measure of ability to generate solutions to a problem, the diary card would theoretically measure implementation of solutions in real-life, and the self-report measure …

Ethnic Identity, Stress, And Anxiety In Latinx University Students At Predominantly White Institutions, Anel Arias

Dissertations

Research indicates that ethnic minority-related stressors contribute to poor mental health outcomes in Latinx university students. There are inconsistent results of the moderating role of ethnic identity in ethnic minority stress and mental health outcomes. The purpose of this study was to examine whether ethnic identity moderates the relationship between ethnic minority stress and trait anxiety in Latinx university students attending predominantly White institutions (PWI). The secondary purpose of this study was to explore the effects of ethnic minority stress on trait anxiety symptoms.

Participants were 256 Latinx (67.6% women, n = 173; 31.3% men, n = 80) undergraduate and …

Investigating Newly Discovered Oscillation Modes In Magnetically Shielded Hall Effect Thrusters Utilizing High Speed Diagnostics, Matthew Joseph Baird

Dissertations

Magnetically shielded Hall effect thrusters (MSHETs) are a variant of Hall effect thrusters (HET) that provide the favorable thrust-to-power ratio and high specific impulse of traditional stationary plasma type (STP) HETs but with an extremely long lifetime. MSHETs exhibit unique discharge plasma oscillations compared to traditional unshielded HETs. In this study, measurements of plasma oscillations in the state-of-the-art 12.5 kW Hall Effect Rocket with Magnetic Shielding (HERMeS) were obtained at various discharge voltages while holding other operation parameters constant. Data were collected using high-speed imaging, voltage, current, and plasma probes. The thruster exhibits two dominant oscillation modes within the discharge …

Romantic Relational Aggression Among College Students: A Moderated Mediation Study Of Attachment Style, Romantic Jealousy, Mate Value, And Relationship Investment, Skylar Hicks

Dissertations

Most of the research on intimate partner violence has concentrated on overt physical and verbal aggression, and less is known about relational aggression in the framework of romantic relationships. Relational aggression is more prevalent in college students’ romantic relationships compared to physical aggression and may be a risk factor for intimate partner violence. Additionally, a number of adverse correlates have been associated with romantic relational aggression, suggesting that it is worthy of study independent of its association with intimate partner violence. The present study explored the relationships among adult attachment, romantic jealousy, mate value, relationship investment, and romantic relational aggression …

A Parametric Analysis Of Opportunities To Respond On Academically Engaged Behavior, Morgan G. Mccargo

Dissertations

The purpose of this study was to evaluate the adequate rate of opportunities to respond (OTR) to provide to students that would result in the highest rates of Academically Engaged Behavior. This study utilized a parametric analysis to evaluate and assess the effects of altering the number of OTR provided per minute (i.e., 1, 3, 5) on academically engaged behavior, disruptive behavior, and passive off-task, as an antecedent intervention in a general education elementary school setting. An alternating treatments design was utilized with three treatment conditions. All treatment conditions were implemented in a predetermined pattern, meeting the standards of Kratochwill …

The Role Of Masculinity In The Development Of Capability For Suicide, Claire Houtsma

Dissertations

Males account for over two-thirds of suicide deaths annually. Additionally, more than 50% of American suicide deaths annually are firearm-related. Suicide risk is elevated within firearm owning households and men are more likely to own firearms, which suggests that male firearm owners are at disproportionate risk for suicide. Prior research has argued that certain stereotypically male traits (e.g., lack of help-seeking) may explain sex differences in suicide death; however, this remains a poorly understood phenomenon. Male gender norms (e.g. physical toughness, self-reliance) may contribute to the development or expression of capability for suicide, primarily through their impact on behavior. The …

Student-Athlete Success: An Examination Of Parenting, Grit, Academic Success, And Mental Health Outcomes, Jackson Howard

Dissertations

Factors such as poor adjustment, substance misuse, and mental health concerns have been found to be detrimental to college student success. Considering this, researchers have focused on investigating protective factors, which may enhance performance in higher education. Specifically, non-cognitive traits, such as grit, or an ability to maintain determination and passion for long-term goals in the face of adversity, and positive parenting strategies, such as psychological autonomy granting, have been tied to positive outcomes for college students in higher education. Conversely, overparenting behaviors and negative outcomes, such as burnout, have been found to be damaging to student success. Student-athletes are …

Posttraumatic Stress Symptoms And Alcohol Outcomes: The Mediating Role Of Drinking Motives And Protective Behavioral Strategies, Hallie R. Jordan

Dissertations

The present study evaluated the sequentially mediating role of drinking motives (i.e. social, enhancement, coping, conformity) and alcohol protective behavioral strategy (PBSA) subtypes (i.e. serious harm reduction [SHR], stopping/limiting drinking [SLD], manner of drinking [MOD]) on the relationships posttraumatic stress symptoms had with hazardous drinking and alcohol-related negative consequences in college students. Participants were 492 (50.8% men) traditional age (i.e. 18 to 25 years old) college students reporting past 30 day alcohol consumption and the experience of at least one potentially traumatic event over their lifetime. Participants reported their gender and completed measures of posttraumatic stress symptoms, drinking motives, PBS …

The Mediating Effects Of Drinking Refusal Self-Efficacy On The Associations Between Alcohol Protective Behavioral Strategies And Alcohol Use Outcomes, Kray Scully

Dissertations

Alcohol use continues to pose a serious public health problem at universities across the U.S., largely due to the extent of consumption and frequency of negative consequences experienced among college students. Alcohol protective behavioral strategies (PBS-A) are an empirically supported repertoire of safe drinking behaviors college students can use to monitor and control their alcohol consumption as well as limit harm while drinking. However, there remains a need to better understand how cognitive mechanisms, such as drinking refusal self-efficacy (DRSE), help explain college student safe alcohol use behaviors to enhance evidenced-based intervention and prevention efforts. Recently, studies that examined the …

Multi-Tiered Systems Of Support For Head Start Teachers Behavior Specific Praise, Elizabeth Lown

Dissertations

A variety of evidence-based studies have examined teachers’ intervention implementation and its effects on student outcomes. This study tested a Multi-Tiered Systems of Support approach to supporting teachers’ intervention implementation. Specifically, the Multi-Tiered Systems of Support approach was comprised of Tier 1 (didactic training), Tier II (tactile prompting), and Tier III (performance feedback). The primary dependent variable was Head Start teachers' use of behavior specific praise. Secondary dependent variables included teachers' use of reprimand statements and child outcomes, which included academically engaged behavior and disruptive behavior. This study further examined if Head Start teachers' use of behavior specific praise was …

Natural Disasters And Attachment Quality: The Mediating Roles Of Self-Compassion And Positive Mental Health, Alexandra Teller

Dissertations

Emerging adults exposed to natural disasters may develop posttraumatic stress symptoms, mood disorders, and anxiety disorders. Attachment quality has been found to be negatively associated with psychopathology in emerging adult hurricane survivors; however, the mechanisms by which this occurs have not yet been explored fully. Self-compassion may act as a protective factor against developing psychopathology while potentially promoting positive mental health outcomes following hurricane exposure. Furthermore, positive mental health has been identified as a potential resilience resource and may be impacted by attachment quality and self-compassion. The present study investigated the relationships between attachment quality, self-compassion, positive mental health, posttraumatic …

Evaluating The Effects Of Behavior Bingo On Students' Academically Engaged Behaviors, Kristi White

Dissertations

This study sought to extend the current literature regarding the use of an interdependent group contingency intervention (i.e., Behavior Bingo) for increasing students’ academically engaged behavior and decreasing students’ disruptive behaviors. Participants included three 6th grade Science teachers and their students. An ABAB design across classrooms was used to examine the effects of the Behavior Bingo intervention on students’ behaviors. Specifically, this study consisted of four phases: a) baseline, b) behavior Bingo intervention, c) withdrawal from intervention, and d) intervention reinstated. Results indicated increases in student’s academically engaged behaviors following implementation of the Behavior Bingo intervention with moderate to large …

The Role Of Acculturation And Acculturative Stress In The Association Between Generational Status And Factors Related To Suicide Among South Koreans In The United States, Hyejin Jin

Dissertations

Korean Americans have the highest suicide mortality rates among Asian American subgroups (6.84 per 100,000 population; U.S. Census Bureau, 2010). Therefore, it may be important to examine the unique factors that account for the suicide rates of Korean Americans, especially since current knowledge on suicide with Korean Americans is limited. Thus, the present dissertation study sought to examine the role of acculturation and acculturative stress in the association between generational status and factors related to suicide among Korean Americans.

A sample of 150 participants completed a study protocol consisting of various self-report measures on MTurk. The results supported the hypothesis …

The Effects Of Culturally Competent Messaging On Willingness To Engage In Firearm Means Safety, Sarah E. Butterworth

Dissertations

Little is known regarding how to most effectively deliver messaging that promotes safe firearm storage behavior. This study examined the extent to which engagement with firearm means safety messaging is conditional based on type of messaging, political beliefs, past suicidal ideation, and implicit associations of firearms with safety or danger. A sample of 909 American firearm owners recruited from Amazon’s Mechanical Turk (mTurk) was randomized to receive standard or gun culture-friendly firearm suicide prevention messaging at baseline, with 608 completing one-month follow-up. Main effects of messaging condition on means safety openness, intention to change firearm storage practices, and actual changes …

Exploring The Maladaptive Cognitions Of Moral Injury, Rachel L. Martin

Dissertations

Moral injury and Post-Traumatic Stress Disorder (PTSD) are two prominent mental health problems that affect military personnel. Moral injury results when the individual is exposed to a situation or event that violates their moral code; however, PTSD results when there is a substantial threat of harm. Moral injury is a relatively new construct within the literature with research starting in the late 2000s. Although distorted cognitions are core components of PTSD symptomatology, there has been no research of cognitions in moral injury. The current study sought to differentiate PTSD and moral injury using the specific maladaptive cognitions associated with trauma …

Comparison Of Retention Rates Between Traditional On-Ground And Online Biology Laboratory Courses In The Community College Setting, Megan Davis Winborne

Dissertations

Community colleges provide vital educational resources to students across the nation. Online learning has become an integral part of the course offerings for community colleges. With regards to online learning, there is a lack of empirical evidence and research focused on community college offered biology laboratories, particularly concerning retention rates of these students. Means, Toyama, Murphy, and Bakia. (2013) found that even though there are copious amounts of studies dedicated to evaluation of evidence-based practices in online learning formats, many of them neglected to review retention rates associated with online educational courses.

The purpose of this study was to determine …

The Lived Experience Of Oldest-Old Rural Adults, Susan Hinck

Dissertations

The oldest-old (85+ years) age group is the fastest growing segment of the United States population. Little is known about the day-to-day experience of oldest-old rural adults. The purpose of this study was to explore life experiences of oldest-old individuals who live alone in rural Midwest communities and provide detailed description and interpretation of the meaning of their lived experiences. Aims of the study were to: (a) identify how oldest-old rural-dwelling men and women perceive the experience of living alone in their own homes; (b) analyze their perceptions of their health status and presence of acute or chronic illness; (c) …

Preserving The Embodied Self: The Meaning Of Technology For People With Chronic Renal Failure, Lynn M. Nagle

Dissertations

The purpose of this research was to understand the experience and meaning of technology for individuals receiving hemodialysis for the treatment of chronic renal failure. Philosophical hermeneutics provided the framework for interpreting the technology experience of eleven participants in an outpatient facility. The technology of illness care was constituted by providers, the physical environment, hemodialysis, and the mechanisms of care delivery. Being transformed by a reluctant partnering with technology was the constitutive pattern derived from the meanings of the participants' experiences. Three themes reflected the dimensions of their individual and collective experiences (a) coming to terms with loss and limitations, …

Meta-Analysis On Costing Out Nursing Services, Judith G. Eckhart

Dissertations

This descriptive meta-analytic study investigated 73 primary studies on costing out nursing services. A critical review of the literature revealed that findings from the various published and unpublished studies were inconsistent and inconclusive. This meta-analysis integrated the literature to identify the relationships between nursing costs and a second variable.

A Comparison Of Pain Perception Between Elderly African-Americans And Caucasians, Janice M. Johnson-Umezulike

Dissertations

This study explored the differences and similarities in pain perception reported in elderly African Americans and elderly Caucasian subjects by addressing the question of whether ethno-cultural background of clients affect their pain perception. The literature was reviewed in the areas of cultural influences on pain perception, the elderly and pain perception, the association of pain perception to past experiences, and the meaning of pain. The Gate Control Pain Theory emphasizing the role of psychological variables in pain perception and behavioral responses to pain was the basis of the theoretical framework (Melzack & Wall, 1965).

Meaning-In-Life, Depression And Suicide In Older Adults: A Comparative Survey Study, Diane M. Buchanan

Dissertations

This study compared meaning-in-life (MIL) and other related variables in two populations, those elderly who were and those who were not depressed. The model developed for this study assumed in older adults that spirituality, hope, health and social support variables are essential concepts within which MIL occurs. Furthermore, the absence of a clear MIL may contribute to the presence of depression, and depression is usually present in conjunction with thoughts of suicide. This study used a comparative survey design to examine relationships between spirituality, hope, health, social support, MIL, depression and suicide. The primary data collection method was quantitative, however, …

Development Of An Instrument Measuring Existential Authenticity, Misty M. Richmond

Dissertations

The purpose of this study was to develop an instrument to measure existential authenticity in adults. Existential authenticity was defined as awareness of the existential givens in the human experience as defined by Irvin Yalom. This construct is theorized as the goal of existential psychotherapy, which is a meaning-centered psychotherapy aligned with the purpose of providing clients with the tools to cope with life's negativities and live a meaningful life. Many diagnostic conditions, including depression, psychological trauma, and anxiety, are conceptualized as amenable to the benefits of existential psychotherapy and the journey towards existential authenticity.

A Comparative Study Of Student Achievement And Teacher Perceptions Between Differently Structured Special Education School Districts, Leigha Wetter

Dissertations

In order to provide recommendations for special education service organization practices, the researcher investigated student achievement and teacher perceptions of differently structured special education school districts that collaborated with a special school district to provide special education services and schools that provided their own special education services. Through evaluating the varying school districts, this study aimed to address possible best practices within the structuring of the organizations to increase student achievement for students with special needs. In order to evaluate the organization of the school districts, the researcher analyzed the student achievement of special education students at the elementary and …