Digital Commons Network^™

Determining The Trophic Role Of Red Snapper (Lutjanus Campechanus) In Mississippi State Waters Using Stomach Content And Stable Isotope Analysis, Branden Kohler

Master's Theses

The goal of this study was to determine the diet composition, trophic position and ecological role of red snapper (Lutjanus campechanus) in Mississippi state waters utilizing stable isotopes (δ¹³C and δ¹⁵N) and stomach content analysis. Stable isotope analysis of fish and their prey can provide information on species-specific basal resource utilization, diet composition and trophic position which can improve food web models and inform fisheries management decisions. Particulate organic matter (POM), the presumed base of the food web, red snapper muscle tissue, and red snapper stomach contents were collected from 25 sites in 2016 and …

Dataset And Evaluation Of Self-Supervised Learning For Panoramic Depth Estimation, Ryan Nett

Master's Theses

Depth detection is a very common computer vision problem. It shows up primarily in robotics, automation, or 3D visualization domains, as it is essential for converting images to point clouds. One of the poster child applications is self driving cars. Currently, the best methods for depth detection are either very expensive, like LIDAR, or require precise calibration, like stereo cameras. These costs have given rise to attempts to detect depth from a monocular camera (a single camera). While this is possible, it is harder than LIDAR or stereo methods since depth can't be measured from monocular images, it has to …

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 …

The Impact Of Alexander Technique On Efficiency And Ease Of Movement In Kindergarten Through 5th-Grade Students, Mary Catherine Polesnak

Master's Theses

The purpose of this study was to determine if the Alexander Technique could improve Kindergarten through fifth-grade students’ efficiency and ease of movement. The Alexander Technique has many anecdotal accounts of personal benefit, but research is lacking that shows its benefit. The goal was to answer the following guiding research questions: Q1 Can the Alexander Technique improve efficiency of movement in K-5th-grade students? Q2 Can the Alexander Technique improve the ease of movement in K-5th-grade students? There were forty-nine student participants in grades Kindergarten through fifth-grade at a small, rural, private school in the midwest. Permission for this research was …

A Restorative Resource: Dance-Based Non-Profits That Operate To Benefit Sex Trafficked Victims, Jessica Coleman

Master's Theses

The purpose of this study was to bring awareness to dance-based non-profits which operate for the purpose of being a restorative resource for victims of sex trafficking. The goal of the researcher was to answer these five essential questions: Q1 What is the structure of the program? Q2 What are the outreach strategies being used to bring in participants? Q3 What kind of curriculum is being used in the program? Q4 What are the benefits that dance-based non-profits provide for victims of sex trafficking? Q5 How are the benefits of these programs being measured? This research was significant because with …

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 …

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 …

An Exploratory Study Of Pulse Width And Delta Sigma Modulators, Logan B. Penrod

Master's Theses

This paper explores the noise shaping and noise producing qualities of Delta-Sigma Modulators (DSM) and Pulse-Width Modulators (PWM). DSM has long been dominant in the Delta Sigma Analog-to-Digital Converter (DSADC) as a noise-shaped quantizer and time discretizer, while PWM, with a similar self oscillating structure, has seen use in Class D Power Amplifiers, performing a similar function. It has been shown that the PWM in Class D Amplifiers outperforms the DSM [1], but could this advantage be used in DSADC use-cases? LTSpice simulation and printed circuit board implementation and test are used to present data on four variations of these …

Video Based Automatic Speech Recognition Using Neural Networks, Alvin Lin

Master's Theses

Neural network approaches have become popular in the field of automatic speech recognition (ASR). Most ASR methods use audio data to classify words. Lip reading ASR techniques utilize only video data, which compensates for noisy environments where audio may be compromised. A comprehensive approach, including the vetting of datasets and development of a preprocessing chain, to video-based ASR is developed. This approach will be based on neural networks, namely 3D convolutional neural networks (3D-CNN) and Long short-term memory (LSTM). These types of neural networks are designed to take in temporal data such as videos. Various combinations of different neural network …

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 …

Advancing Scool – Game Type Research And Development, Chanelle K. Mosquera

Master's Theses

The proposed project, sCool, is an adaptive game-based learning experience designed for STEM education. In this work, we present a new iteration of sCool in efforts to further examine contributing factors of engagement, usability, and comprehension. The newly developed game experience for acquiring object-oriented programming skills is divided into two parts: concept learning and practical challenge. The concept learning part teaches students theoretical lessons of programming through fun gameplay. The practical challenge part allows students to practice programming by completing tasks. This project presents several new game types for both the concept learning and practical challenge parts. The development of …

Improvement Of Labyrinth Seal Leakage Rates Using Additive Manufacturing, Austin L. Gasbarra

Master's Theses

The growing popularity of additive manufacturing in commercial applications has al- lowed for new ideas and new ways of thinking when designing components. Further optimization at the component level is possible, though powder metallurgy is in its infancy. This study explores the possibility of using additive manufacturing to develop better labyrinth seals in turbomachinery. Labyrinth seals have a torturous fluid path with high losses, thus limiting the amount of fluid leakage. These types of seals can be non-rotating, allowing them to better take advantage of the additive manufacturing process due to the absence of rotating stresses. Labyrinth seal performance is …

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 …

Emergency Landing And Guidance System, Joseph Alarid

Master's Theses

Every year there are thousands of aviation accidents along with hundreds of human deaths that happen around the world. While the data is sparse, it is well documented that many of these happen from emergency landings gone awry. While pilots can generally make great landings in clear daytime conditions, they are significantly handicapped when it comes to landing at night or amongst poor visibility conditions.

Due to the nature of this problem and some of the large scale advances in software technology we propose a solution that provides a significant improvement from the status quo. Using transfer learning on neural …

Iot Camera System For Monitoring Strawberry Fields, Simon Schoennauer

Master's Theses

A wireless imaging system for monitoring strawberry fields provides enough quality image data for computer vision algorithms to make meaningful yield predictions. This report contains a design for a wireless sensor network modified with mesh networking techniques to extend coverage range and a solar energy harvesting system to improve sensor node lifetime. A two hop system with six nodes is implemented in a laboratory environment validating the communication systems integrity over an 800’ range. Moving from a primary battery system to solar energy harvesting increases the module lifetime indefinitely.

Attentional Parsing Networks, Marcus Karr

Master's Theses

Convolutional neural networks (CNNs) have dominated the computer vision field since the early 2010s, when deep learning largely replaced previous approaches like hand-crafted feature engineering and hierarchical image parsing. Meanwhile transformer architectures have attained preeminence in natural language processing, and have even begun to supplant CNNs as the state of the art for some computer vision tasks.

This study proposes a novel transformer-based architecture, the attentional parsing network, that reconciles the deep learning and hierarchical image parsing approaches to computer vision. We recast unsupervised image representation as a sequence-to-sequence translation problem where image patches are mapped to successive layers …

Numerical Analysis Of A Circulation Control Wing, Luke W. Bodkin

Master's Theses

The objective of this thesis was to develop an experimental method to research circulation control wings using numerical analysis. Specifically, it is of interest to perform 3D wind tunnel testing on a circulation control wing in the Cal Poly Low Speed Wind Tunnel (CPLSWT). A circulation control wing was designed and analyzed to determine the feasibility of this testing.

This study relied on computational fluid dynamics (CFD) simulations as a method to predict the flow conditions that would be seen in a wind tunnel test. A CFD simulation was created of a wing model in a wind tunnel domain. Due …

A Novel Method To Commercialize Medical Devices Initially Developed At California Polytechnic State University San Luis Obispo, Christina Grigorian

Master's Theses

California Polytechnic State University, San Luis Obispo is a university that encourages students to approach learning hands-on. As such, there is cutting-edge technology being developed by students in all departments on campus. Being that the university possesses an outstanding biomedical engineering department, there are groundbreaking medical devices that students are creating at Cal Poly SLO. These are devices that can better the lives of individuals suffering from ailments or fulfill needs in the medical industry. Subsequently, it is vital that these devices make it out of campus laboratories and into the hands of consumers. In order to move a product …

Barrel Support Fabrication And Arcing Reduction In Railguns, Eric Venenga

Master's Theses

Collisions with orbital debris present risks to spacecraft and astronauts. Orbital debris is capable of generating hypervelocity impacts, which can generate system threatening damage. In order to protect assets a means of defending against these types of impacts must be developed. In order to evaluate these methods prior to launch, ground based testing systems must also be developed.Cal Poly’s Electromagnetic Railgun program began in 2011 with the idea of creating a system capable generating hypervelocity impacts in a laboratory setting. Due to a loss of efficiency due to arcing in the barrel and a lack of side supports capable of …

Analysis Of Electroanatomic Mapping System Accuracy Using X-Ray Reconstruction Of Electrode Locations In A Porcine Animal Model, Hana Boudlali

Master's Theses

Fluoroscopy is considered the gold standard for locating catheters during cardiac electrophysiology (EP) procedures. However, fluoroscopy emits ionizing radiation which can lead to adverse health effects when exposed to in high doses (World Health Organization, 2016). Electroanatomic mapping (EAM) systems display the three-dimensional location of EP catheters and measure the local electrical activity of the heart. They can minimize a physician’s reliance on fluoroscopy and can help reduce radiation exposure during a case (Casella, 2011).

EAM systems are diagnostic medical devices that inform the placement of ablation therapy and must accurately locate catheters to be deemed safe. Test methods to …