Digital Commons Network^™

Physiological And Anatomical Responses Of Douglas-Fir And Lodgepole Pine To Bark Beetle Attack And Blue-Stain Fungi Inoculations, Robert Walker

Master's Theses

Bark beetles are important native insect pests to conifer forests in North America and their irruptive beetle populations are of serious concern both ecologically and economically. As bark beetles bore into the phloem of a host tree to excavate brood galleries, they simultaneously deposit spores of blue-stain fungi. Both the partial girdling of the tree’s phloem by beetles and the blockage of xylem by fungi can overcome the tree’s defenses and cause its death. To combat colonization by insects and pathogens, conifers allocate large amounts of metabolic resources into defense mechanisms, of which, resin ducts play important roles. As resin …

Participation In Ballroom Dancing: The Effects On The Social And Emotional Intelligence Of Adolescents, Ashley Baxter

Master's Theses

The goal of this study was to determine the impact that ballroom dancing had on the social and emotional intelligence of adolescents as well as to examine which areas of social and emotional intelligence were most affected by participating in ballroom dancing. In the text Handbook of Social and Emotional Learning: Research and Practice, there are five competencies of social-emotional intelligence as defined by Celene E. Domitrovich et al.: “. . . self-awareness, self-management, social awareness, relationship skills, and responsible decision making” (6). The researcher examined the effect that ballroom dancing had on four out of five of these social-emotional …

Dignity And Respect In The Salsa Dance Classroom: Fostering Healthy Self-Esteem To Promote Compassion, Diana Sanchez

Master's Theses

Many students that have attempted to take salsa dance classes often express their disillusionment in the way in which they are treated by salsa dance instructors. Salsa dance classes have the possibility to function to awaken in the student greater integration with the society in which people live, while stimulating actions, improving self-esteem, and self-confidence, improving vocabulary, awakening sensitivity, attenuating shyness, as well as increasing communicative and social skills. If the content of a course is well designed and delivered with an intentional student-centered approach, it can positively contribute to greater and more sincere learning. In this sense, the objective …

With A Little Help From My Friends: Determining The Role Of Physical Activity And Belonging In Retention Of First-Year University Students, Bryson Kelly

Master's Theses

There exists an issue facing colleges and universities across the United States. Roughly 29% of first-year students do not return for their second year of school. Previous research has shown a significant relationship between a student’s sense of belonging or fit within the university and their decision to continue enrollment (retention). Physical activity has also been shown to have a significant relationship with a sense of belonging. Therefore, the purpose of the present study was to determine if physical activity and sense of belonging predict retention of university students from their first year to their second year using a Relationships …

Rethinking Classical Ballet Pedagogy: Examining Advancements That Integrate A Modern Approach, Erika Lindblom

Master's Theses

The purpose of this research was to explore how recent advancements in technology and medical science have or have not pushed ballet pedagogy to evolve. Also examined were the principles of classical ballet that continue to be included despite current knowledge that these practices are outdated and may be unsafe. The 180-degree turn-out, dancing en pointe, and the grand plié were the specific areas of interest for this study. The following essential questions guided the research: Q1 What impact have advancements in anatomy and physiology had on ballet and ballet training? Q2 What are the origins of ballet principles such …

Strictly Ballroom: Examining How The Culture Of Collegiate Ballroom Dance Influences Body Image Perceptions, Rachel Neil

Master's Theses

The purpose of this study was to examine the influence that collegiate ballroom dance programs have on participants’ body image perception and self-esteem and to identify what sort of effect those perceptions have on performance satisfaction. In this project the researcher surveyed twenty-four students, ten males and fourteen females, who were presently involved in a collegiate ballroom dance program with a goal of identifying what sort of influence the culture of their ballroom dance programs had on each participant’s body image and self-esteem. The research instrument used in this study was an electronic survey that included yes or no questions, …

Facilitating The Acculturation Of Children Among Russian Immigrant Mothers, Anna Goncharova

Master's Theses

While biculturalism is considered the preferred strategy of acculturation for most, the existing research does not address the degree to which immigrant mothers support bicultural acculturation of their children and how these mothers enact biculturalism. Although existing research demonstrates that parental involvement and social capital of immigrant parents are important for the success of their children, studies do not delineate the personal meanings and the process of maternal involvement in the acculturation of their children into American society. This research addresses these questions and describes maternal goals towards acculturation and depicts how Russian immigrant mothers facilitate acculturation of their children …

Desire And The Power Of Practice: Queer Sexual Perspectives, Philip W. Kemp

Master's Theses

This research provides a theoretical analysis of the lived experiences of 17 queer individuals, ages 19 to 66, regarding their sexual desires and practices. Queer Theory is incorporated to inform on sex, gender performance and sexuality as social constructs, to inform grounded theoretical concepts, and to identify expressed social behavior by each participant. Social Exchange Theory is used to analyze participant responses. Modified grounded theory is incorporated to posit a particular social exchange that I refer to as the queer exchange; in which particular costs/benefits are considered before queer individuals engage in social exchanges due to their potentially (un)perceived queerness. …

Educational Leadership Can Dance: A Deeper Look Into The Efficiency Behind Evaluations Of Dance Educators, Helen Brown

Master's Theses

The purpose of this study was to provide information on the issue of dance educator evaluation’s level of integrity, potential biases, and efficiency. Further, this study also acts as a review of current evaluation systems within public schools across the United States. The researcher received information about the evaluation systems from eleven dance educators in addition to how nine educational leaders evaluate their dance educators, along with one educational leader’s personal insight into their respective evaluation process. The research instruments utilized were online surveys and interviews. Both the surveys and interview responses were analyzed both quantitatively and qualitatively, depending on …

Hypersonic Heat Transfer Load Analysis In Star-Ccm+, Robert Comstock

Master's Theses

This thesis investigates the capabilities of STAR-CCM+, a Computational Fluid Dynamics (CFD) software owned by Siemens, in predicting hypersonic heat transfer loads on forward-facing surfaces. Results show that STAR-CCM+ predicted peak heat transfer loads within +/- 20% of experimental data on the leading edge of a delta wing design from the X-20 Dyna-Soar program with 73^o of sweep. Steady-state laminar simulations were run as replications of wind tunnel tests documented in NASA CR-535, a NASA technical report that measured and studied the hypersonic pressure and heat transfer loads on preliminary X- 20 wing designs across a wide range of …

Comparison Of Classification Algorithms And Undersampling Methods On Employee Churn Prediction: A Case Study Of A Tech Company, Heather Cooper

Master's Theses

Churn prediction is a common data mining problem that many companies face across industries. More commonly, customer churn has been studied extensively within the telecommunications industry where there is low customer retention due to high market competition. Similar to customer churn, employee churn is very costly to a company and by not deploying proper risk mitigation strategies, profits cannot be maximized, and valuable employees may leave the company. The cost to replace an employee is exponentially higher than finding a replacement, so it is in any company’s best interest to prioritize employee retention.

This research combines machine learning techniques with …

Assessment Of Genetic Diversity In Largetooth Sawfish, Pristis Pristis, Populations Over The 20th Century, Ann Fearing

Master's Theses

The Critically Endangered Largetooth Sawfish, Pristis pristis, experienced global declines in range and abundance over the past century and Australia is now their last stronghold. This research aimed to understand whether these declines have been accompanied by a reduction in levels of genetic diversity. Using P. pristis tissue samples sourced from natural history specimens, three fragments (616-bp, 386-bp, 141-bp) in the mitochondrial DNA (mtDNA) control region were PCR-amplified. At each fragment, significant genetic structure was found in P. pristis overall (Φ_ST=0.946, N=9; 0.813, N=54; 0.771, N=99). The Indo-West Pacific and Atlantic/Eastern Pacific each harbor genetically distinct lineages of …

Korngold's Dream States: An Analysis Of Transitional Passages In Erich Wolfgang Korngold's Opera "Die Tote Stadt", Tyler Brandon

Master's Theses

This thesis aims to compare Korngold’s treatment of altered states of reality in his 1920 opera Die tote Stadt to that of other composers and apply a theoretical approach to explain the transitions between the diegetic realms, or multiple narrative levels, that the work is contained within. These are outlined by William Cheng in his article entitled “Opera ‘en abyme’: The prodigious ritual of Korngold’s ‘Die tote Stadt.’” An overview of Cheng’s article is provided, recounting the claims that he posits and the analyses that he uses to explain the transitions between these diegetic realms. Next, other instances of altered …

Measuring Implicit And Explicit Attitudes Toward Transracial Adoption, Lillian Spadgenske

Master's Theses

Attitudes toward Transracial Adoption, or TRA (i.e., White individuals adopting a child of a different race than their own) have been largely positive in a few experimental studies conducted, with only one study (Tinkler & Horne, 2011) employing an implicit measure, the Implicit Association Task (IAT). The current study has focused on assessing attitudes toward TRA families with Black versus Asian children using both explicit and implicit (the IAT) measures of bias. In addition, religiosity was tested as a moderator of the attitudes toward TRA adoption. It was found that individuals had much more supportive attitudes toward transracial families on …

Predicting Personality Type From Writing Style, Tanay Gottigundala

Master's Theses

The study of personality types gained traction in the early 20th century, when Carl Jung's theory of psychological types attempted to categorize individual differences into the first modern personality typology. Iterating on Jung's theories, the Myers-Briggs Type Indicator (MBTI) tried to categorize each individual into one of sixteen types, with the theory that an individual's personality type manifests in virtually all aspects of their life. This study explores the relationship between an individual's MBTI type and various aspects of their writing style. Using a MBTI-labeled dataset of user posts on a personality forum, three ensemble classifiers were created to predict …

Towards On-Device Detection Of Sharks With Drones, Daniel Moore

Master's Theses

Recent years have seen several projects across the globe using drones to detect sharks, including several high profile projects around alerting beach authorities to keep people safe. However, so far many of these attempts have used cloud-based machine learning solutions for the detection component, which complicates setup and limits their use geographically to areas with internet connection. An on-device (or on-controller) shark detector would offer greater freedom for researchers searching for and tracking sharks in the field, but such a detector would need to operate under reduced resource constraints. To this end we look at SSD MobileNet, a popular object …

Interplanetary Trajectory Optimization With Automated Fly-By Sequences, Emily Ann Doughty

Master's Theses

Critical aspects of spacecraft missions, such as component organization, control algorithms, and trajectories, can be optimized using a variety of algorithms or solvers. Each solver has intrinsic strengths and weaknesses when applied to a given optimization problem. One way to mitigate limitations is to combine different solvers in an island model that allows these algorithms to share solutions. The program Spacecraft Trajectory Optimization Suite (STOpS) is an island model suite of heterogeneous and homogeneous Evolutionary Algorithms (EA) that analyze interplanetary trajectories for multiple gravity assist (MGA) missions. One limitation of STOpS and other spacecraft trajectory optimization programs (GMAT and Pygmo/Pagmo) …

Personality And Mood For Non-Player Characters: A Method For Behavior Simulation In A Maze Environment, Noah L. Paige

Master's Theses

When it comes to video games, immersion is key. All types of games aim to keep the player immersed in some form or another. A common aspect of the immersive world in most role-playing games -- but not exclusive to the genre -- is the non-playable character (NPC). At their best, NPCs play an integral role to the sense of immersion the player feels by behaving in a way that feels believable and fits within the world of the game. However, due to lack of innovation in this area of video games, at their worst NPCs can jar the player …

Improving Sustainable Fertilizer Practices For Pomegranate By Leaf Nutrient Concentration Evaluation And Fertilizer Trials, Minh Le

Master's Theses

Fruit tree leaf nutrient concentrations are commonly used to determine fertilizer rates, but information is limited regarding nutrient requirements, seasonal N uptake and removal rates, and soil N dynamics for pomegranate. Relationships between fertilizer rates, leaf nutrient concentrations, fruit yield and quality were examined in five mature, commercial California ‘Wonderful’ pomegranate orchards. Site 1 was observed for two growing seasons (2018-2019) and sites 2-5 were observed for one season (2018 or 2019). In 2018, 150, 300, or 450 g N/tree was applied at sites 1-3 in a single application at early fruit development or in two equal applications at early …

Spacecraft Trajectory Optimization Suite (Stops): Design And Optimization Of Multiple Gravity-Assist Low-Thrust (Mgalt) Trajectories Using Modern Optimization Techniques, Michael G. Malloy

Master's Theses

The information presented in the thesis is a continuation of the Spacecraft Trajectory Optimization Suite (STOpS). This suite was originally designed and developed by Timothy Fitzgerald and further developed by Shane Sheehan, both graduate students at California Polytechnic State University, San Luis Obispo. Spacecraft utilizing low-thrust transfers are becoming more and more common due to their efficiency on interplanetary trajectories, and as such, finding the most optimal trajectory between two planets is something of interest. The version of STOpS presented in this thesis uses Multiple Gravity-Assist Low-Thrust (MGALT) trajectories paired with the island model paradigm to accomplish this goal. The …

B-Plane Targeting With The Spacecraft Trajectory Optimization Suite, Jared Graef

Master's Theses

In interplanetary trajectory applications, it is common to design arrival trajectories based on B-plane target values. This targeting scheme, B-plane targeting, allows for specific target orbits to be obtained during mission design. A primary objective of this work was to implement B-plane targeting into the Spacecraft Trajectory Optimization Suite (STOpS). This work was based on the previous versions of STOpS done by Fitzgerald and Sheehan, however STOpS was redeveloped from MATLAB to python. This updated version of STOpS implements 3-dimensional computation, departure and arrival orbital phase modeling with patched conics, B-plane targeting, and a trajectory correction maneuver. The optimization process …

Impact Of Soil Properties On Removal Of Emerging Contaminants From Wastewater Effluent During Soil Aquifer Treatment, Lauren N. Riley

Master's Theses

This study evaluates soil properties that impact the effectiveness of soil aquifer treatment (SAT) as a polishing step to the remove two classes of ECs from wastewater effluent: pharmaceuticals and personal care products (PPCPs), and engineering nanomaterials (ENMs). In recent years, it has been determined that elevated levels of emerging contaminants (ECs) are being released into the environment with wastewater effluent. ECs are proven to cause adverse environmental and health effects as a result of long-term exposure. It is important to evaluate sustainable solutions to improve the current methods of wastewater treatment to address these ECs.

Soil aquifer treatment (SAT) …

Finite Element Analysis Of Total Knee Arthroplasty, Sean Yueh

Master's Theses

The total knee arthroplasty (TKA) has become one of the most successful procedures in all of medicine, with an average of over 966,000 operations performed a year. Since its introduction in 1968, the TKA’s surgical process and implant designs have continuously been improved to increase survivability. However, the need for a revision TKA – due to aseptic loosening – continues to be a problematic aspect of the procedure. Stress shielding induced by different design parameters of the implant has generated controversy in the determination of an ideal configuration. The purpose of this study is to investigate how implant design parameters …

Professional Development For Student Employees Of Color, Monica Duran

Master's Theses

The purpose of this study was to conduct a Participatory Action Research (PAR) project with undergraduate student employees at a large research institution in order to reimagine the career and leadership development programs so that they are responsive to, and supportive of, students who identify as people of color. This would be done using a framework of Yosso’s Community Cultural Wealth theory (2005). The participants of this study were five undergraduate student employees who worked within a single department in a division of Student Affairs. The methodology used was Participatory Action Research, which is a methodology in which the researcher …

Hate Speech, Habitus, And Identity Signaling On 4chan’S Politically Incorrect Board, Jonathon Geiger

Master's Theses

Websites, such as 4chan, have provided a place for extremism and hate speech to flourish through anonymous discourse. One group that has been especially important to this growth has been the alt-right. The alt-right is a far-right white nationalist movement that is known for engaging in trolling, creating memes, and generating conspiracy theories. Past research has focused on the amounts of hate speech and characterizing content on the website. However, past studies have not looked at the experience of using the website through the combination of participant observation and content analysis. Here I show that the extensive use of hate …

A Call To Arms: A Comparative Study Of Mississippi And Kentucky Citizens During The Secession Crisis, 1859-1861, Amy Myers

Master's Theses

Many studies of the American Civil War have considered why Mississippi leaders voted to secede, while Kentucky politicians remained in the Union. Scholars have previously focused on political elites to understand the underlying motivations behind each state’s decision. These same scholars have often confined their studies to a synthesis of why secession occurred nationally or at the state level. The question remains as to what the common citizen saw and believed when faced with secession and if their views matched their delegates.

This study utilizes the governors’ papers of John J. Pettus and Beriah Magoffin, the Jefferson Davis papers, and …

My Child’S Keeper: Child Vulnerability And Quality Of Life On Parental Stress And Grit, Abigail Armstrong

Master's Theses

There is a reciprocal relationship between parenting stress and child distress that has been well documented (e.g., Rechenberg, Grey & Sadler, 2017). These effects generalize to physical outcomes such that higher maternal depression has been associated with poorer child health-related quality of life (HRQOL; Jaser, Whittemore, Ambrosino, Lindemann, & Grey, 2008). In the same way that parental distress has been shown to affect the child, parental perceptions of child vulnerability in children with chronic illness has also been associated with negative outcomes, including child depressive symptoms (Mullins et al., 2004), increased health care use (Spurrier et al., 2000), and increased …

Development And Use Of An Environmental Dna Tool To Monitor Recovery Of The Critically Endangered Smalltooth Sawfish, Pristis Pectinata, In The Northwest Atlantic, Ryan N. Lehman

Master's Theses

The Critically Endangered Smalltooth Sawfish, Pristis pectinata, was once common in the tropical and subtropical waters of the Atlantic Ocean; however, following global declines in range and abundance over the past century, individuals were restricted to the waters of south and southwest Florida (SWFL) by about the 1980’s. Recently, public encounter reports have emerged in historically occupied habitats in United States waters, suggesting individuals are present in, or re-occupying, these areas, although the status of P. pectinata outside of SWFL is not currently well understood. Targeted environmental DNA (eDNA) surveys were chosen to assess the occurrence of P …

Diagonalization Of 1-D Schrodinger Operators With Piecewise Constant Potentials, Sarah Wright

Master's Theses

In today's world our lives are very layered. My research is meant to adapt current inefficient numerical methods to more accurately model the complex situations we encounter. This project focuses on a specific equation that is used to model sound speed in the ocean. As depth increases, the sound speed changes. This means the variable related to the sound speed is not constant. We will modify this variable so that it is piecewise constant. The specific operator in this equation also makes current time-stepping methods not practical. The method used here will apply an eigenfunction expansion technique used in previous …

​Burned Out But Barely Begun: A Qualitative Study On Newer Clergy And Communication Surrounding Emotional Labor And Personal Well-Being In South Mississippi, Lauren Noll

Master's Theses

This study provides an overview of the concepts surrounding clergy burnout,

organizational culture, and emotional labor theory. Furthermore, it explains the need

for  clearer understanding of clergy perceptions of their own personal

experiences with burnout and their emotional wellbeing in relation to their organizational environment and careers as clergy members. The methodology of qualitative interviews sought to understand the narratives and experiences of clergy members from their own words and worldviews rather than from a statistical basis or analysis.

This research found answers to key questions involving communication about burnout in the context of organizational culture and emotional labor, including …