Digital Commons Network^™

Tripartite Relationships: A Model System For The Study Of Plant-Mycorrhizal Fungus-Aphid Interactions, Eric Rizzo

Master's Theses

Arbuscular mycorrhizal fungi (AMF) are obligate biotrophs known for forming mutualistic associations with over 80% of terrestrial plant species. Plants forming symbiosis with AMF, in general, exhibit enhanced nutritional status as well as abiotic and biotic stress tolerance. In addition, plants benefit from mycorrhiza-induced resistance (MIR), which “primes” plant defenses, enabling a faster and stronger response against subsequent attacks by pathogens and insect herbivores. Nevertheless, MIR against insect herbivores is primarily dependent on the feeding guild of the attacking insect. Herbivory by leaf-chewing insects and generalist species on mycorrhizal plants often results in decreased insect weight gain and reproductive rates, …

Validation Of The Six-Minute Walk Test For Predicting Peak Oxygen Consumption Cancer Survivors, Alexandra Nicole Schumacher

Master's Theses

Exercise improves cardiovascular function in cancer survivors (CS) suffering from treatment-related toxicities, such as decreased peak oxygen consumption (VO2peak). Establishing valid assessment protocols that determine VO2peak are essential for developing individualized exercise prescriptions for cancer rehabilitation programs. The University of Northern Colorado Cancer Rehabilitation Institute (UNCCRI) has developed a valid cancer-specific VO2peak treadmill protocol to address this need. The six-minute walk test (6MWT) is an exercise assessment used in many populations with chronic disease to predict VO2peak but it is not clear whether this test accurately assesses VO2peak in CS. The 6MWT is simple, inexpensive, and representative of daily living …

No Foreign Despots On Southern Soil: The American Party In Alabama And South Carolina, 1850-1857, Robert N. Farrell

Master's Theses

During the 1850s in the South, the American Party, also known as the Know Nothing Party, rallied southerners culturally and politically around nativism, an anti-immigrant and anti-Catholic ideology. This thesis studies nativism in the Deep South and challenges existing scholarship by Tyler Anbinder and William Darrell Overdyke. Anbinder claims that southern Know Nothings held little in common with their northern counterparts and exhibited only regional characteristics. Overdyke maintains that the American Party in the Deep South participated in the national organization, but he argues that nativism appeared only as an incidental component.

An analysis of private papers, speeches, and newspapers …

Overparenting And Emerging Adults' Mental Health: The Mediating Role Of Emotional Distress Tolerance, Christopher Michael Perez

Master's Theses

Overparenting is a type of parental control that features intense parental involvement, which is negatively associated with the development of age-appropriate autonomous behavior in children and emerging adults. To this point, overparenting has been linked to poor mental health in young children (Bayer, Sanson, & Hemphill, 2006; Gar & Hudson, 2008), as well as in emerging adults (LeMoyne & Buchanan, 2011; Segrin, Woszidlo, Givertz, & Montgomery, 2013). The emerging adult population has continued to be one of interest across recent studies concerning mental health, given the unique emotional and behavioral changes that arise during this stage of development. Emotional distress …

Grooming As An Agonistic Behavior In Garnett’S Small-Eared Bushbaby (Otolemur Garnettii), Jennie L. Christopher

Master's Theses

Social behaviors are a necessary component of group living and interactions between organisms. To correctly assess social interactions, researchers must be able to observe behaviors and interpret their function based on the behavior or the behavioral context. In primate species, grooming is often used to assess affiliations between group members and the consensus has been to always interpret grooming as an affiliative behavior. However, a number of avian, rodent and feline species have been shown to groom conspecifics aggressively. These instances of aggressive grooming appear most often when individuals are required to maintain close proximity to one another, such as …

Sparking A Dolphin's Curiosity: Individual Differences In Dolphins' Reactions To Surprising And Expectation-Violating Events, Malin Katarina Lilley

Master's Theses

Non-scientific literature consistently describes dolphins as “curious animals,” but there has been little systematic research on curiosity in dolphins. Curiosity in humans and certain non-human animal species, including birds and non-human primates, has been studied by examining individual differences in exploration and reactions to novel stimuli. Additionally, research has explored how human infants and non-human animals react when an event violates their expectations. The present study explored dolphins’ reactions to spontaneously surprising and expectation-violating stimuli. The reactions of dolphins, 15 bottlenose (Tursiops truncatus) and 6 rough-toothed (Steno bredanensis), at Gulf World Marine Park were analyzed in …

Sir Robert Thompson’S Better War: The British Advisory Mission And The South Vietnamese Strategic Hamlet Program, 1961-1963, Richard Sears Lovering

Master's Theses

This thesis examines the interactions between the British Advisory Mission to South Vietnam (BRIAM) and the South Vietnamese government of Ngo Dinh Diem and his American advisors. By studying BRIAM’s efforts—and those of its leader, Sir Robert Thompson—this thesis argues that many of the tactics Thompson advocated and Diem executed, especially the Strategic Hamlet Program, foreshadowed the techniques Americans used several years later under General Creighton Abrams, during the period historian Lewis Sorley termed the “better war.”

Sorley argued that the American strategy in the Vietnam War was flawed until Abrams implemented his “one war” plan. With this interpretation, however, …

A Multi-Millennial Drought Reconstruction For West-Central New Mexico Using Rocky Mountain Juniper (Juniperus Scopulorum, Sarg.), Joshua S. Oliver

Master's Theses

A new multi-millennial tree-ring record from living and remnant Rocky Mountain juniper (Juniperus scopulorum, Sarg.) wood from Candelaria in west-central New Mexico is used to determine the temporal and spatial variability of scPDSI over the past two millennia (B.C. 492 to A.D. 2014). Our record indicates extreme drought events found within other hydroclimatic proxy records in the Colorado Plateau region spanning the time period (16^th century and 2^nd century megadroughts). By ranking the extreme drought events by magnitude, duration, intensity, and overall score, the most extreme drought events of this record are compared to drought events …

Increasing Novel Vocalizations For Individuals With Asd Using A Voice Output Communication Aide, Shawn Kathleen Bishop

Master's Theses

This study aimed to extend the literature on VOCA as a means of producing increased verbal speech using a prompt delay and shaping methods. Intervention targeted novel vocalization for three children with autism spectrum disorder (ASD) and limited vocal speech. All three participants increased vocalizations, but to varying degrees and only after a second phase where an echoic prompt was introduced. While the results vary across participants, increased vocal speech for all participants and high social validity suggest that VOCA-based interventions may be an appropriate intervention to increase vocal output for children with ASD.

Characterization Of Andrenocortical Tissue Morphology, Histology, And Steroid Synthesis Among Finetooth (Carcharhinus Isodon), Blacktip (Carcharhinus Limbatus), Atlantic Sharpnose (Rhizoprionodon Terraenovae), And Bonnethead (Sphyrna Tiburo) Sharks, Danielle Elizabeth Bailey

Master's Theses

Adrenocortical (interrenal) tissue is composed of steroidogenic cells that produce corticosteroids involved in the stress response and hydromineral balance. Previous research characterizing the elasmobranch interrenal suggests that the number of interrenal bodies that produce the single primary corticosteroid, 1a-hydroxycorticosterone (1a-OHB), varies among species. However, potential species-specific differences in the amount of interrenal tissue and major steroid products produced have been understudied. To address this critical gap in our understanding of elasmobranch biology, this study examined interrenal morphology, cell structure, steroidogenic enzyme distribution (3bHSD), and steroid production in four shark species: Finetooth Carcharhinus isodon, Blacktip Carcharhinus limbatus, Atlantic Sharpnose …

Nick Fury, Will Smith, And Other Black Authority Figures Breaking The Racial Contract In Popular Films Of 2000-2015, Solai N. Wyman

Master's Theses

Film is arguably a model of reflection and reinforcement of cultural, social, and political values of audience members. Therefore, the images and messages displayed in films are of importance. In this study, film is analyzed in order to determine if Charles Mills’ racial contract is depicted in popular films of 2000-2015. The Racial Contract (1997) suggests that only some people, specifically white people, agree to form a state in which their absolute privileges in the political, economic, and social arenas are guaranteed by virtue of being white. This theory was used to understand the role of black people in American …

Rules Based Analysis Engine For Application Layer Ids, David Scrobonia

Master's Theses

Web application attack volume, complexity, and costs have risen as people, companies, and entire industries move online. Solutions implemented to defend web applications against malicious activity have traditionally been implemented at the network or host layer. While this is helpful for detecting some attacks, it does not provide the gran- ularity to see malicious behavior occurring at the application layer. The AppSensor project, an application level intrusion detection system (IDS), is an example of a tool that operates in this layer. AppSensor monitors users within the application by observing activity in suspicious areas not able to be seen by traditional …

Indian Sign Language Numbers Recognition Using Intel Realsense Camera, Sravani Mudduluru

Master's Theses

The use of gesture based interaction with devices has been a significant area of research in the field of computer science since many years. The main idea of these kind of interactions is to ease the user experience by providing high degree of freedom and provide more interactive way of communication with the technology in a natural way. The significant areas of applications of gesture recognition are in video gaming, human computer interaction, virtual reality, smart home appliances, medical systems, robotics and several others. With the availability of the devices such as Kinect, Leap Motion and Intel RealSense cameras accessing …

Going With The Flow: Using Menstrual Education As A Tool For Empowering Post Pubescent Nepali Girls, Graceann L. Cadiz

Master's Theses

Global discourse and research evidence on the benefits of girl’s education show that prioritizing girl’s education is the most successful strategy of breaking the cycle of poverty, gender inequality, and overpopulation. Moreover, there is a growing interest in closing the gender gap in education, but there has been insufficient attention to the specific needs of girls experiencing menses or menarche within schooling environments. The beginning of menstruation represents a pivotal event in development of the adolescent girl but is under-recognized and deemed insignificant with a culture of silence present throughout the rest of their lives. While providing access to education …

Investigating Nucleostemin's Regulatory Role In Ribosome Biogenesis, Meghan F. Monroy

Master's Theses

No abstract provided.

Investigating The Cross-Domain Plasticity Of Musical Training And Reading Acquisition: A Developmental Perspective, Parker R. Tichko

Master's Theses

For a child learning spoken language, reading development is a complex cognitive process that relies on robust sensorineural processing of the speech signal to acquire phonological knowledge. Consequently, several authors have proposed that music training might enhance the sensorineural processing of speech, ultimately bolstering reading-related skills in children (Patel, 2011, 2014; Tallal & Gaab, 2006; Tierney & Kraus, 2013). Indeed, neural indices of auditory processing are related to reading ability in childhood, including typical & atypical readers, and, interestingly, in children with a history of music training (Tierney & Kraus, 2013). Collectively, these findings suggest that music training might facilitate …

Workplace Posture Assessment And Biofeedback With Kinect, Matthew Crussell

Master's Theses

With the prevalence of computing, many workers today are confined to desk within an office. By sitting in these positions for long periods of time, workers are prone to develop one of many musculoskeletal disorders (MSDs), such as carpal tunnel syndrome. In order to prevent MSDs in the long term, workers must employ good sitting habits. One promising method to ensure good workplace posture is through camera monitoring. To date, camera systems have been used in determining posture in a clean environment. However, an occluded and cluttered background, which is typical in an office setting, imposes a great challenge for …

Probabilistic Roadmaps For Virtual Camera Pathing With Cinematographic Principles, Katherine Davis

Master's Theses

As technology use increases in the world and inundates everyday life, the visual aspect of technology or computer graphics becomes increasingly important. This thesis presents a system for the automatic generation of virtual camera paths for fly-throughs of a digital scene. The sample scene used in this work is an underwater setting featuring a shipwreck model with other virtual underwater elements such as rocks, bubbles and caustics. The digital shipwreck model was reconstructed from an actual World War II shipwreck, resting off the coast of Malta. Video and sonar scans from an autonomous underwater vehicle were used in a photogrammetry …

Optimizing Control Of Shell Eco-Marathon Prototype Vehicle To Minimize Fuel Consumption, Chad Louis Bickel

Master's Theses

Every year the automotive industry strives to increase fuel efficiency in vehicles. When most vehicles are designed, fuel efficiency cannot always come first. The Shell Eco-marathon changes that by challenging students everywhere to develop the most fuel-efficient vehicle possible. There are many different factors that affect fuel efficiency, and different teams focus on different vehicle parameters. Currently, there is no straightforward design tool that can be used to help in Shell Eco-marathon vehicle design. For this reason, it is difficult to optimize every vehicle parameter for maximum fuel efficiency.

In this study, a simulation is developed by using basic vehicle …

Temperament In Baby Siblings Of Children With Autism Spectrum Disorder, Julia Chen

Master's Theses

Objective: Temperament may be an important early behavioral risk marker for ASD. The current study aimed to investigate temperamental differences and stability of temperament in high-risk baby siblings with and without ASD in toddlerhood and preschool-age; understand the additional benefit of measuring temperament in predicting ASD, beyond measures of ASD symptomology and severity; and understand gender differences in the relationship between temperament and ASD. Methods: High-risk baby siblings of children with ASD were evaluated at approximate ages 2 and 4. Multiple regression was used to assess the relationship between diagnostic group (ASD, non-ASD), temperament at both time points, and gender. …

Corgi: Compute Oriented Recumbent Generation Infrastructure, Christopher Allen Hunt

Master's Theses

Creating a bicycle with a rideable geometry is more complicated than it may appear, with today’s mainstay designs having evolved through years of iteration. This slow evolution coupled with the bicycle’s intricate mechanical system has lead most builders to base their new geometries off of previous work rather than expand into new design spaces. This crutch can lead to slow bicycle iteration rates, often causing bicycles to all look about the same. To combat this, several bicycle design models have been created over the years, with each attempting to define a bicycle’s handling characteristics given its physical geometry. However, these …

Gpumap: A Transparently Gpu-Accelerated Map Function, Ivan Pachev

Master's Theses

As GPGPU computing becomes more popular, it will be used to tackle a wider range of problems. However, due to the current state of GPGPU programming, programmers are typically required to be familiar with the architecture of the GPU in order to effectively program it. Fortunately, there are software packages that attempt to simplify GPGPU programming in higher-level languages such as Java and Python. However, these software packages do not attempt to abstract the GPU-acceleration process completely. Instead, they require programmers to be somewhat familiar with the traditional GPGPU programming model which involves some understanding of GPU threads and kernels. …

Energy Harvesting From Exercise Machines: Buck-Boost Converter Design, Andrew E. Forster

Master's Theses

This report details the design and implementation of a switching DC-DC converter for use in the Energy Harvesting From Exercise Machines (EHFEM) project. It uses a four-switch, buck-boost topology to regulate the wide, 5-60 V output of an elliptical machine to 36 V, suitable as input for a microinverter to reclaim the energy for the electrical grid. Successful implementation reduces heat emissions from electrical energy originally wasted as heat, and facilitates a financial and environmental benefit from reduced net energy consumption.

Fluid Flow Characterization And In Silico Validation In A Rapid Prototyped Abdominal Aortic Aneurysm Model, Dean Thomas Wampler

Master's Theses

Aortic aneurysms are the 14^th leading cause of death in the United States. Annually, abdominal aortic aneurysm (AAA) ruptures are responsible for 4500 deaths. There are another 45,000 repair procedures performed to prevent rupture, and of these approximately 1400 lead to deaths. With proper detection, the aneurysm may be treated using endovascular aneurysm repair (EVAR). Understanding how the flow of the blood within the artery is affected by the aneurysm is important in determining the growth of the aneurysm, as well as how to properly treat the aneurysm. The goal of this project was to develop a physical construct …

The Insulin-Like Growth Factor-1 (Igf1) System As A Potential Biomarker For Nutritional Status And Growth Rate In Pacific Rockfish (Sebastes Spp.), Nicole L. Hack

Master's Theses

Growth performance in vertebrates is regulated by environmental factors including the quality and quantity of food, which influences growth via endocrine pathways such as the growth hormone (GH) / insulin-like growth factor somatotropic axis. In several teleost fishes, circulating concentrations of insulin-like growth factor-1 (Igf1) correlate positively with growth rate, and it has been proposed that plasma Igf1 levels may serve as an indicator of growth variation for fisheries and aquaculture applications. Here, I tested whether plasma Igf1 concentrations might serve as an indicator of somatic growth in olive rockfish (Sebastes serranoides), one species among dozens of rockfishes …

The Collisional Evolution Of Orbital Debris In Geopotential Wells And Disposal Orbits, Benjamin Polzine

Master's Theses

This thesis investigates the orbital debris evolution in the geosynchronous disposal orbit regime and within geosynchronous orbits effected by the geopotential wells. A propagator is developed for the accurate simulation of GEO specific orbits and the required perturbations are determined and described. Collisions are then simulated in the selected regimes using a low velocity breakup model derived from the NASA EVOLVE breakup model. The simulations described in this thesis consider a set of perturbations including the geopotential, solar and lunar gravity, and solar radiation pressure forces. This thesis is based on a prior paper and additionally seeks to address an …

Silent Communication Device, Christopher Wayne Schutter

Master's Theses

Oral communication has constituted as a necessary aspect of how people interact with one another, but there are always situations where this form of communication can create distractions, irritation, or even danger. Take for example, a student in a laboratory who needs to communicate effectively with a lab partner without creating a distraction to those trying to work around said student or a soldier on a battlefield who needs to relay information effectively to his or her comrades without revealing his or her position to the enemy. It becomes apparent that people need a more exclusive form of communication in …

Orbital Determination Feasibility Of Leo Nanosatellites Using Small Aperture Telescopes, Michael R. Strange

Master's Theses

This thesis is directed toward the feasibility of observing satellites on the nano scale and determining an accurate propagated orbit using a Meade LX600-ACF 14” diameter aperture telescope currently located on the California Polytechnic State University campus. The optical telescope is fitted with an f/6.3 focal reducer, SBIG ST-10XME CCD camera and Optec TCF-S Focuser. This instrumentation allowed for a 22’ X 15’ arcminute FOV in order to accurately image passing LEO satellites. Through the use of the Double-r and Gauss Initial Orbit Determination methods as well as Least Squared Differential Correction and Extended Kalman Filter Orbit Determination methods, an …

Thermal Evolution Of Moon, Arshdeep Singh Gill

Master's Theses

In August, 2014 three experiments were conducted using infrared systems deployed at White Mountain Research center, CA. The data was acquired for the whole month of August. Teams of 3-4 students from Cal Poly San Luis Obispo and UC Santa Barbara were stationed at the research center for 2-3 days to operate the equipment. The three experiments were:(1) creating spatial-temporal time series of lunar surface temperatures;(2) identifying atmospheric meteor trails;(3) search for meteor impacts on the Moon surface. Out of the three this thesis focusses on experiment 1 and the results from this experiment could also help with the other …

In-Plane Shear Wall Performance As Affected By Compressed Earth Block Shape, Steven Ellis Ambers

Master's Theses

This thesis investigates the in-plane shear performance of full-scale walls made from compressed earth blocks. Compressed earth blocks are a type of masonry where the blocks are composed of compressed soil and typically dry-stacked without mortar. Prior research has demonstrated that the in-plane shear strength of these blocks falls far short of capacities predicted by conventional masonry building codes, requiring new testing to develop effective and safe designs for seismic conditions. This thesis specifically studies the effects of block type and the use of grouted shear keys at the block head joints.

Three full-scale walls were constructed and tested under …