Digital Commons Network^™

Temporal And Spatial Impacts Of Water Control Structures On The Benthic Infaunal Community Of A Tidally Restricted Wetland In Elkhorn Slough, Ca, Christine Marie Mann

Master's Theses

North Azevedo Pond in Elkhorn Slough, CA is a partially tidally restricted wetland that underwent an experimental ponding manipulation which increased inundation and tidal mixing within the system. This wetland has two spatially significant infaunal microsystems, south and north. Benthic cores taken before and after the manipulation showed that both the south and north infaunal communities remained dominated by the same major taxa, respectively. Both systems, however, experienced species shifts following the ponding manipulation. In the South, the non-native bivalve, Gemma gemma, declined from an average of 19,103 to 385 individuals (m2)-1 whereas the native clam, Nutricola tantilla, increased from …

The Relationship Between Perceptions And Actual Use Of Workplace Flexibility And Employee Engagement, Katherine Baer

Master's Theses

Previous research has identified both perceptions of the availability of flexible work arrangements and use of these arrangements as a predictor of engagement (Richman, Civian, Shannon, Hill, & Brennan, 2008; Ten Brummelhuis, Bakker, Hetland, & Keulemans, 2012). However, no studies have looked at the incremental effect use of flexible work arrangements have on engagement, above and beyond actual use. Very few studies have looked at how gender moderates the relationship between perceptions of flexible work arrangements and use of flexible work arrangements and engagement. The purpose of this study was to examine and compare the relationships between perceptions and actual …

The Moderating Effect Of Gender And Tenure On The Relationship Between Perceived Supervisor Support And Organizational Commitment, Megan Evelyn Little

Master's Theses

The purpose of this study was to explore the extent to which the demographic variables of gender and tenure influence the strength and direction of the relationship between perceived supervisor support and organizational commitment. Responses to a 2014 organization-wide employee opinion survey from 383 employees within a computer software company were analyzed using hierarchical multiple regression. In support of previous research, results from this study lay credence to the finding that perceived supervisor support has a positive, significant relationship with organizational commitment such that individuals who felt supported by their supervisors were more likely to report higher levels of organizational …

Recombinant Expression And Potential Autocatalysis Of Aedes Aegypti Trypsin-Like Serine Proteases (Aaspii And Aaspiv), Diane Francine Eilerts

Master's Theses

Aedes aegypti mosquitoes can be found globally in tropical and subtropical urban areas and spread Zika, Dengue fever, yellow fever, and Chikungunya viruses. Current vector control methods are limited and nonspecific. The female Ae. aegypti mosquito uses blood meal proteins to obtain nutrients required for oogenesis; inhibition of the midgut trypsin-like serine proteases responsible for blood meal digestion may provide a novel method of vector control. Ae. aegypti blood meal digestion is complex and the role of uncharacterized serine proteases in blood digestion is unclear; specifically, a group of trypsin-like serine proteases (AaSPII–V) is expressed at constant levels before and …

Using Stable Isotope Analysis To Infer Breeding Latitude And Migratory Timing Of Juvenile Pacific-Slope Flycatchers (Empidonax Difficilis), Emily Bailey Moffitt

Master's Theses

Effective conservation of migratory species is hindered by a lack of knowledge of population links between breeding, wintering and stopover habitats. The Pacific-slope flycatcher (Empidonax difficilis) is one of the many Neotropical migratory songbirds whose populations are steadily declining throughout western North America. This research contributed to the assessment of connectivity in this species by inferring relative breeding origins and habitat selection of juvenile birds that migrate along the Pacific Flyway to the South San Francisco Bay Area in the fall. Feather data collected from July 20 to October 12, 2014 were analyzed for three stable isotopes (δ2H, δ13C, δ15N). …

Affective And Cognitive Effects Of Awe In Predicting Hopelessness And Brooding Rumination, Eldita Tarani

Master's Theses

This study investigated the effects of awe, as a positive emotion, in ameliorating

depressive symptoms such as hopelessness and rumination. Previous research indicates that awe is unique compared to other positive emotions in that is elicited by information rich-stimuli that facilitate shifts in cognition as one attempts to accommodate this new information to their current frame of reference. In addition, awe was found incite a self- diminishing effect that contrast the inflated significance one places on the self, during negative self-referential thinking (e.g. hopelessness). We hypothesized that exposure to an awe stimuli (video) would prompt subjects to feel less hopeless …

Academic Barriers For Migrant Middle School Students In Salinas, California, Alexa Terhorst

Master's Theses

The educational barriers facing migrant students are examined in this research based on the experiences of teachers and Mexican migrant middle school students in Salinas, California. Through the research, I ask if academic barriers for migrant students differ from obstacles of their peers and if so, what are those differences? The barriers to migrant students’ education were explored through a literature review, examining themes of parental involvement, teacher–student relationships, student self-esteem, and the use of educational programs. Through snowball sampling, semi-structured interviews, and surveys, data were collected from four teachers and 18 migrant students to understand how these themes manifested …

A Feminist Focus Group Analysis Of Women's Experiences In Postpartum Yoga Classes With Babies Present, Ky Carnell Russell

Master's Theses

Women in the postpartum period face a number of physical and emotional challenges that research results indicate could be alleviated through exercise. Unfortunately, many new mothers are unable to participate in regular exercise due to a variety of personal and societally constructed obstacles. There is a growing trend to incorporate babies into yoga classes in an effort to increase the accessibility of postpartum exercise. There has been limited research conducted regarding the effectiveness of this emerging trend, and none have examined the feelings of participants engaged in mother and baby yoga classes. To address this gap in the literature, the …

Conservative Endodontic Access – Cone Beam Computed Tomography (Cbct)-Guided Preparation And Its Impact On Endodontic Referrals, Jeremiah M. Granados

Master's Theses

Conservative endodontic access (CEA) results in minimal access in comparison to traditional endodontic access (TEA) which is defined as straight-line access. Our survey suggested that while 81% of general dentists would prefer to restore a tooth that received a CEA preparation, only 33% considered it a determining factor for their endodontic referrals (100 out of 129 responded: Response rate 77.52%). To test our hypothesis that CBCT images aid endodontists in CEA preparation, 45 extracted molars were accessed by one endodontic resident using techniques of TEA (Group A), CEA (Group B) or CEA with preoperative CBCT images provided (Group C)(n=15 per …

Parent–Child Reciprocity? Parental Aggression And Oppositional Defiant Symptoms In Girls, Olivia J. Derella

Master's Theses

Objective. Evidence suggests that parents’ verbal aggression, corporal punishment, and inter-partner conflict are linked to children’s heightened conduct problems and oppositional defiant disorder (ODD). While children mutually influence parenting, strength of bidirectional relationships among these specific behaviors have been inconsistent across gender; further investigation is warranted to understand links between parental aggression and girls’ ODD symptoms. The current study tests independent reciprocal effects between specific forms of parental aggression and girls’ ODD dimensions of oppositionality, antagonism, and irritability. Method. Annual data from the longitudinal Pittsburgh Girls Study were used to evaluate parental aggression and girls’ ODD symptoms in a …

An Examination Of Daily Dietary Intake And Swallow Function In An Older Adult Population, Lillian A. Barone

Master's Theses

This study aims to determine the relationship, if any, of daily dietary intake of adult individuals living independently in the community and swallow function/ dysfunction. It appears that individuals modify their diet as they age and the correlation between this awareness of diet modification and dysphagia is unclear. Using the Yale Swallow Protocol and a study specific questionnaire, this relationship was examined. The results indicate future research should focus on the bi-directional relationship between malnutrition and dysphagia in the aging, community dwelling population.

A Finite Element Analysis Of Maxillary Centers Of Resistance, Edward A. Cronauer

Master's Theses

No abstract provided.

“You Don’T Just Eat ‘Em, You Get Match Ready With ‘Em”: A Content Analysis Of Alcohol, Food, And Non-Alcoholic Beverage Advertising In The United States During The 2014 Fifa World Cup Brazil, Melissa M. Feulner

Master's Theses

No abstract provided.

Lipid 654 R And S Isoforms In Bacteroidetes Known To Produce Lipid 654, Anuj Camanocha

Master's Theses

No abstract provided.

Pink And Dude Chefs: Efficacy Of An Online Train-The-Trainer Mechanism And Student Program Outcomes, Jacqueline Chen

Master's Theses

Background: The rate of overweight and obesity among adolescents aged 12-19 years has quadrupled since 1980. Reducing obesity is a key public health priority, as obesity is associated with individual and population-level health and economic consequences. Afterschool-based obesity prevention programs that aim to develop nutrition and culinary self-efficacy have shown promise. However, the level of aptitude among program instructors is directly correlated with student success, suggesting the importance of effective train-the-trainer (TTT) mechanisms for implementing and scaling up these strategies.

Pink and Dude Chefs (PDC) is an afterschool nutrition education and culinary skills program for middle-school adolescents aged between 11-14 …

The Recovery Of Protein From Egg Yolk Protein Extraction Granule Byproduct, Irene Jennifer Kaufman

Master's Theses

In addition to proving an excellent source of nutrients, eggs are used in the food, cosmetic, and biotechnology industries for their rheological and bioactive properties. Much of the potential for the added value is in individual components of the egg, rather than the whole egg. At low speed centrifugation, yolk separates into two distinct fractions—granules and plasma. It is becoming increasingly popular in the industry to remove the plasma fraction of the egg yolk to use for its livetins, particularly immunoglobulin Y, leaving behind a granule by-product (“yellow cake”). Previous research has shown potential added-value from the granule fraction, especially …

Create: Clinical Record Analysis Technology Ensemble, Skylar Eglowski

Master's Theses

In this thesis, we describe an approach that won a psychiatric symptom severity prediction challenge. The challenge was to correctly predict the severity of psychiatric symptoms on a 4-point scale. Our winning submission uses a novel stacked machine learning architecture in which (i) a base data ingestion/cleaning step was followed by the (ii) derivation of a base set of features defined using text analytics, after which (iii) association rule learning was used in a novel way to generate new features, followed by a (iv) feature selection step to eliminate irrelevant features, followed by a (v) classifier training algorithm in which …

Ecosystem-Based Management In The Morro Bay Watershed And Estuary, Lucas Earle Crandall

Master's Theses

The following thesis discusses the implementation of ecosystem-based management, an emerging concept in the field of environmental planning and management, in the Morro Bay watershed and estuary. Ecosystem-based management offers solutions to problems associated with human interaction within the natural environment; former President Barack Obama advised by the National Ocean Council, Pew Oceans Commission Report and the US Commission on Ocean Policy, has mandated implementation of this concept in coastal and marine systems (National Ocean Council, 2016). The theory behind ecosystem-based management challenges many tenets of existing natural resource management. This thesis finds the concept of ecosystem-based management as favorable …

A Data-Driven Approach To Cubesat Health Monitoring, Serbinder Singh

Master's Theses

Spacecraft health monitoring is essential to ensure that a spacecraft is operating properly and has no anomalies that could jeopardize its mission. Many of the current methods of monitoring system health are difficult to use as the complexity of spacecraft increase, and are in many cases impractical on CubeSat satellites which have strict size and resource limitations. To overcome these problems, new data-driven techniques such as Inductive Monitoring System (IMS), use data mining and machine learning on archived system telemetry to create models that characterize nominal system behavior. The models that IMS creates are in the form of clusters that …

Anaerobic Fermentation Of Food Waste And Glycerol To Hydrogen, Eric Robert Krikorian

Master's Theses

ABSTRACT

Anaerobic Fermentation of Food Waste and Glycerol to Hydrogen

Eric Krikorian

Hydrogen has several well-known advantages as a fuel and chemical feedstock, but current methods of hydrogen production are costly and energy intensive. A potentially advantageous source of hydrogen is fermentation of organic wastes, especially any abundant, low-cost wastes with a high content of simple sugars. Molar hydrogen yields from fermenters (aka digesters) are affected by pH, organic loading rate (OLR), hydraulic residence time (HRT), and substrate type. A less studied process to increase yield is sparging with low-H₂ content gas to strip H₂ from the digester …

Development And Characterization Of Tissue Engineered Blood Vessel Mimics Under "Diabetic" Conditions, Shelby Gabrielle Kunz

Master's Theses

The development of tissue engineered blood vessel mimics for the testing of intravascular devices in vitro has been established in the Cal Poly tissue engineering lab. Due to the prevalence of cardiovascular disease in diabetic patients and minimal accessible studies regarding the interactions between diabetes and intravascular devices used to treat vascular disease, there is a need for the development of diabetic models that more accurately represents diabetic processes occurring in the blood vessels, primarily endothelial dysfunction. This thesis aimed to create a diabetic blood vessel mimic by implementing a high glucose environment for culturing human endothelial cells from healthy …

Quantifying The Impact Of Truck Only Lanes On Vehicular Emissions On A Limited-Access Highway, Edward Chee Tang

Master's Theses

This thesis seeks to estimate CO₂ emissions on a portion of the U.S. 101 highway in San Luis Obispo County before and after construction of a truck only lane on the Cuesta Grade. Towards that aim, the microsimulation software, VISSIM, was used in conjunction with the Environmental Protection Agency’s emissions model, MOVES. The microsimulation model was calibrated and validated against historical and present traffic volumes obtained from Caltrans with good results using several validation measures. It was found that CO₂ emissions did decrease between 1998 and 2012 (pre and post lane addition), but this effect was shown to …

Modeling And Charging Control Of A Lithium Ion Battery System For Solar Panels, Garrett David Heinen

Master's Theses

The advancement in solar panel and battery technology makes them useful for energy supply and storage. This thesis involves the modeling and charging control of a lithium ion battery system for solar panels. The proposed model is based on the parameters and characteristics of a realistic battery and solar panel system; and the hybrid control approach combines the advantages of the adaptive incremental conductance method and the perturb and observe method to track the maximum power point of the solar panel for charging the battery unit. Computer simulation results demonstrate that this proposed approach offers a faster convergence rate than …

Evaluation Of Pc-Based Virtual Reality As A Tool To Analyze Pedestrian Behavior At Midblock Crossings, Kristina Lynn Mai

Master's Theses

The aim of this research was to analyze if current generation PC-driven virtual reality simulations can be used to accurately mimic and therefore, observe behavior at a crosswalk. Toward that goal, the following research tasks were carried out: a) Designing a 3D virtual crosswalk and recruiting volunteers to wear the HTC Vive headset and to walk across the street, b) Setting up cameras near the midblock crosswalk on University Drive at California Polytechnic State University, San Luis Obispo to observe pedestrians, and c) Comparing pedestrian behavior data from both the virtual and real midblock crosswalk. The comparison was based on …

Effects Of Food Consumption On Cell Proliferation In The Brain Of Python Regius, Stacy Star Habroun

Master's Theses

Neurogenesis is an important and vastly under-explored area in reptiles. While the ability to generate new brain cells in the adult mammalian brain is limited, reptiles are able to regenerate large populations of neuronal cells. Pythons exhibit a characteristic specific dynamic action (SDA) response after food intake with an increase in metabolic rate that facilitates processing the meal. Associated with this change in SDA, pythons (Python spp.) also exhibit impressive plasticity in their digestive and cardiovascular physiology due to the sheer magnitude of the increase in organ growth that occurs after a meal to speed digestion, absorption, and assimilation of …

A Geospatial Assessment Of Social Vulnerability To Sea-Level Rise In Coastal San Luis Obispo, Jesse A. Carpentier

Master's Theses

This project is an assessment of social vulnerability to sea-level rise in the unincorporated coastal area of the County of San Luis Obispo (County) using geospatial and statistical analysis. The intention of this assessment is to inform local climate adaptation efforts now required by state legislation. A social vulnerability index was generated at the Census block group level using 32 variables positively correlated with social vulnerability. The social vulnerability score for each block group is the sum of scores generated for the following principle components: (1) race/ethnicity and disability status, (2) social isolation and age, (3) income, and (4) housing …

The Population Genetics Of Morro Bay Eelgrass (Zostera Marina), Julia Gardner Harencar

Master's Theses

Seagrass populations are in decline worldwide. Zostera marina (eelgrass), one of California’s native seagrasses, is no exception to this trend. In the last 8 years, Morro Bay, California has lost 95% of its eelgrass. Eelgrass is an ecosystem engineer, providing important ecosystem services such as sediment stabilization, nutrient cycling, and nursery habitats for fish. The failure of recent restoration efforts necessitates a better understanding of the causes of eelgrass decline in this estuary. Previous research on eelgrass in California has demonstrated a link between population genetic diversity and eelgrass bed health, ecosystem functioning, and resilience to disturbance and extreme climatic …

The Investigation And Characterization Of The Reaction Of 2-Methylfuran And 2-Methyl-3-Buten-2-Ol With O(3p) And The Photodissociation Of Xylyl Bromide Isomers, Yasmin Fathi

Master's Theses

This thesis has studied the oxidation behavior of different biofuels or additives, 2-methyl-3-buten-2-ol and 2-methylfuran, in combustion experiments at the Chemical Dynamics Beamline held at the Advanced Light Source of the Lawrence Berkley National Laboratory. The oxidation of these fuels were initiated through O(³P) and the combustion experiments were analyzed using a multiplexed chemical kinetics photoionization mass spectrometer with tunable synchrotron radiation. Products of the different reactions were identified using kinetic profiles and further characterized using the photoionization spectra. The amount of each species was calculated using branching fractions.

Additionally, the unimolecular dissociation of the xylyl bromide isomers …

Transnational ‘Interruptions’ In Eritrean Refugee Lives In The Bay Area, Meron Y. Semedar Mr

Master's Theses

For many refugees, the day they flee their home country is the start of the interruption of their life. For refugees, such interruption brings the absence of continuity and loss of vision for the future, that they have to be present in the current situation – not knowing their future. This interruption literally 'interrupts' the life plan of refugees. Many Eritrean refugees vocally state that, "Our body might be here, but our soul is all in Eritrea". Eritrean refugees, having fled an oppressive regime, continue to experience nonstop interruption to their lives in their new country. Due to both the …

Drawings From Syria's Lost Generation: Psychological Impacts Of The Refugee Crisis, Rafael Panlilio

Master's Theses

Since the onset of the Syrian civil war in 2011, more than 11 million people have been forcibly displaced and exposed to violence. Even if the civil war were to end tomorrow, the refugee crisis will be expected to last for decades more. With nearly half of the refugees being children, the impact of the loss of health, education, social networks, and home environments on children have resulted in what is being called Syria‟s lost generation. A potential solution in mitigating these psychological impacts is the reintegration from refugee camps into non-camp host communities or the resettlement into other countries. …