Digital Commons Network^™

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 …

Genetic Investigation Into The Diversity And Population Structure Of Penstemon Harringtonii (Harrington's Beardtongue), Nathen P. Redecker

Master's Theses

Penstemon harringtonii is an endemic Colorado species that is listed on Bureau of Land Management (BLM) State Director’s Sensitive Species List as well as on the U.S. Forest Service sensitive species list. Penstemon harringtonii is encountering threats from habitat destruction and fragmentation due to oil and gas exploration, livestock grazing and recreational activities. Penstemon harringtonii is scattered across six counties in north central Colorado. The populations split into three general areas, one around Eagle and north to Kremmling, from Glenwood Spring south to Aspen and around the community of Rifle. The disjunct nature of the species has raised questions related …

Potato Plant Gene Expression And Physiology During Three-Way Interactions With Mycorrhizal Fungi And Lepidopteran Larvae, Andrew P. Schoenherr

Master's Theses

Arbuscular mycorrhizal fungi (AMF) are integral components of ecosystems and form root associations with the majority of land plants (>80%). In these relationships, AMF provide essential nutrients to their hosts, primarily phosphorus, in exchange for photosynthates, which enhance plant growth and help plants overcome environmental stress. The below-ground interaction between plants and AMF can indirectly alter aboveground plant interactions with insect herbivores. Potatoes (Solanum tuberosum) which are considered one of the most important vegetable crops worldwide, naturally form symbioses with AMF. However, it is not well understood how the association between potatoes and AMF can potentially affect leaf-chewing insect …

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 …

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 …

Does Personality Similarity In Bottlenose Dolphin Pairs Influence Dyadic Bond Characteristics?, Kelsey R. Moreno

Master's Theses

Social structures are critical to the success of many species and have repercussions on health, well-being, and adaptation, yet little is known about the factors which shape these structures aside from ecology and life history strategies. Dyadic bonds are the basis of all social structures; however, mechanisms for formations of specific bonds or patterns in which individuals form which types of bonds have yet to be demonstrated. There is a variety of evidence indicating personality may be a factor in shaping bonds, but this relationship has not been explored with respect to bond components and is yet to be demonstrated …

Do Pinnipeds Have Personality? Coding Harbor Seal (Phoca Vitulina) And California Sea Lion (Zalophus Californianus) Behavior Across Contexts, Amber J. De Vere

Master's Theses

Personality has now been studied in species as diverse as chimpanzees (King & Figueredo, 1997) and cuttlefish (Carere et al., 2015), but marine mammals remain vastly underrepresented in this area. A broad range of traits have been assessed only in the bottlenose dolphin (Highfilll & Kuczaj, 2007), while consistent individual differences in a few specific behaviors have been identified in grey seals (Robinson et al., 2015; Twiss & Franklin, 2010; Twiss, Culloch & Pomeroy, 2011; Twiss, Cairns, Culloch, Richards & Pomeroy, 2012). Furthermore, the context component of definitions of personality is not often assessed, despite evidence that animals may show …

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 …

Age, Growth, And Reproduction Of Vermilion Snapper (Rhomboplites Aurorubens) In The North-Central Gulf Of Mexico, Trevor Dalton Moncrief

Master's Theses

Vermilion Snapper is a commonly harvested species of reef fish in the northern Gulf of Mexico (GOM). It supports both a large commercial and popular recreational fishery, however knowledge of this fish’s life history is limited spatially. Non-linear curve fitting was used to estimate growth parameters and Akaike information criteria (AIC) was used to determine relative model fit. The 2-parameter von Bertalanffy growth function provided the best model fit and lowest AIC score. Histological examination indicated that Vermilion Snapper are batch spawners with asynchronous oocyte development. Additionally, 17% of Vermilion Snapper in the actively spawning phase containing 24 hour POF’s …

The Effect Of Boat Type On Bottlenose Dolphin (Tursiops Trucatus) Behavior In The Mississippi Sound, Maria Zapetis

Master's Theses

Increases in oceanic shipping are a global phenomenon, and a leading cause of concern for marine animal welfare. While it may be difficult to assess the effect of boat traffic on all species in all contexts, it is vital to report anthropogenic impacts where longitudinal data is available, and doubly so where a dearth of information exists. The purpose of this study is to describe how dolphin behavior changed in the presence of boats in the Mississippi Sound between 2006 and 2012, and more specifically, to detail how different boat types impacted dolphins’ behavioral states. This study is unique in …

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 …

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 …

Refurbished And 3d Modeled Thermal Vacuum Chamber, Lauren M. Glenn

Master's Theses

Spacecraft testing includes acoustics, vibrations, and thermal vacuum. Cal Poly’s Space Environments Lab is equipped with multiple vacuum chambers, but no thermal vacuum chamber. The purpose of this thesis is to incorporate an ATS Chiller system with the HVEC vacuum chamber so students are able to experiment with a thermal vacuum chamber. The ATS Chiller had leaky pipes that needed to be refurbished and a shroud was implemented to improve thermal capabilities of the system. The full system was able to reach temperatures as low as -38ºC and as high as 58ºC at a pressure of 10-6 Torr. The ATS …

Actuator Disk Theory For Compressible Flow, Htet Htet Nwe Oo

Master's Theses

Because compressibility effects arise in real applications of propellers and turbines, the Actuator Disk Theory or Froude’s Momentum Theory was established for compressible, subsonic flow using the three laws of conservation and isentropic thermodynamics. The compressible Actuator Disk Theory was established for the unducted (bare) and ducted cases in which the disk was treated as the only assembly within the flow stream in the bare case and enclosed by a duct having a constant cross-sectional area equal to the disk area in the ducted case. The primary motivation of the current thesis was to predict the ideal performance of a …

Energy Harvesting From Exercise Machines: Comparative Study Of Ehfem Performance With Dc-Dc Converters And Dissipative Overvoltage Protection Circuit, Cameron Kiddoo

Master's Theses

Energy Harvesting from Exercise Machines (EHFEM) is an ongoing project pursuing alternate forms of sustainable energy for Cal Poly State University. The EHFEM project seeks to acquire user-generated DC power from exercise machines and sell that energy back to the local grid as AC power. The end goal of the EHFEM project aims to integrate a final design with existing elliptical fitness trainers for student and faculty use in Cal Poly’s Recreational Center. This report examines whether including the DC-DC converter in the EHFEM setup produces AC power to the electric grid more efficiently and consistently than an EHFEM system …

Supercritical Carbon Dioxide Extraction, Kevin Carney

Master's Theses

The objective of this thesis is to explore the properties of supercritical carbon dioxide (CO₂). In addition, the feasibility of building a small-scale low cost system will be explained. A supercritical fluid is a fluid which exhibits properties between liquid and gas with liquid like densities and viscosities similar to a gas. Since the discovery of supercritical fluids in 1822, the use of supercritical fluids, specifically supercritical CO₂, has grown in popularity. The application of supercritical CO₂ has continued to grow in industrial applications since the 1970’s. Supercritical CO₂’s has many beneficial properties …

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 …

Assessing Career Decision-Making Status: The Casve Cycle Questionnaire, Brianna J. Werner

Master's Theses

The CASVE Cycle Questionnaire (CASVE-CQ) was developed to assess an individual’s progress in the CASVE cycle. A multi-phase development process was utilized, which included: initial item development, review by the current targeted demographic (i.e., college students), expert review, measure pilot, and measure administration with item refinement at each of the first three phases. Additionally, the CASVE-CQ identifies those who may have passed over important components of the CASVE cycle. As hypothesized and consistent with guided theory, exploratory factor analysis resulted in a 6 factor measure consisting of 55 items. Validity was supported through correlations between the CASVE-CQ and the identity …

Italian Fellas In Olive Drab: Exploring The Experiences Of Italian-American Servicemen In Sicily And Italy, 1943-1945, Guido Rossi

Master's Theses

Despite constituting the largest ethnic group in the U.S. Armed Forces during World War II, the experiences of Italian-Americans have received scant attention by historians. In particular, the stories of the U.S. citizens of Italian descent or Italian-born but naturalized Americans who served in Italy, have received almost none. These soldiers, sailors, airmen, and coastguardmen who could often speak Italian, had grown up in Italian-American families and neighborhoods, and still had relatives in Italy, were asked to go fight in their country of origin. During the Allied advance, these men found themselves in close contact with a destitute Italian population …

Life History Of The Non-Native Invasive Red Lionfish (Pterois Volitans) In The Northern Gulf Of Mexico, Alexander Q. Fogg

Master's Theses

Invasive Red Lionfish (Pterois volitans) were first detected in the northern Gulf of Mexico (nGOM) in 2010 and since then their numbers have increased dramatically. From 2010 to 2015, more than 15,000 Red Lionfish were collected opportunistically from the nGOM for this study. Length and weight relationships differed significantly among ecoregions by sex and there was clear sexual dimorphism in size with males being larger and heavier. Red Lionfish age ranged from 0-4.5 years old and males achieved greater growth rate (K) and asymptotic maximum lengths (L_inf) compared to females and these parameters were also different …

A Longitudinal Investigation Of The Effect Of Violent Video Game Play On Capability For Suicide, Claire Houtsma

Master's Theses

According to the interpersonal theory of suicide, for an individual to be capable of engaging in suicidal behavior they must be fearless about death and possess elevated physical pain tolerance. It is believed that such capability is developed through exposure to painful and/or provocative events, which serve to habituate the individual to fear and pain. The current study sought to expand on previous studies to examine the impact of video game play on capability for suicide. Participants (n = 63) were randomly assigned to a violent or non-violent video game condition and fearlessness about death and pain tolerance were assessed …

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 …

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 …

Towards A Better Understanding Of Zebrafish Sleep Behavior, Kanza Musarrat Khan

Master's Theses

Sleep serves many vital functions in humans, ranging from energy restoration to memory consolidation and information integration. Sleep deprivation is linked to worsened physiological states and psychological conditions. Zebrafish are an emerging model in neurobehavioral research and have recently demonstrated great utility in the study of sleep. This teleost species possesses several of the same neurotransmitter and neuropeptide systems that are involved in the regulation of sleep and waking rhythms in higher order mammals. Previous study of these animals has revealed a differential gene and proteomic expression following sleep deprivation through changes in environmental stimuli. The present study sought to …

Maligned “Milish:” Mississippi Militiamen In The Civil War, Tracy L. Barnett

Master's Theses

Thousands of southern men avoided regular military service in the American Civil War and enlisted or were drafted into state organized militias. In Mississippi, these units were termed Mississippi State Troops or Minute Men. This thesis argues that Mississippi militiamen’s pre-war positions and localized conception of military service directly influenced their wartime experiences. Militiamen, often in their thirties and forties, were older than the average Confederate soldier, established community members, and heads of families who sought service near home. The Mississippi state government, however, visualized militia service as anything but local and developed a centralized militia system that removed men …

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.

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 …

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

Master's Theses

No abstract provided.