Digital Commons Network^™

Parental Influences On Adolescents' Risky Media Usage, Dahyeon Jung

Master's Theses

The present study investigated how parenting styles influence adolescents’ risky media usage and how these associations vary according to media-specific parenting practices and adolescent characteristics. Participants included 315 adolescents aged 13-18 in the United States, who completed questionnaires on parenting styles (i.e., authoritative, authoritarian, permissive), media-specific parenting practices (i.e., active conversational practices, coercive monitoring, preventive practices), and their depression, self-esteem, and risky media usage. Findings indicated all three parenting styles were associated with adolescent exposure to risk through media, but only authoritarian and permissive were related to internet addiction. Across parenting styles, adolescents with parents who engaged in high compared …

The Relationship Between Diversity Climate Perceptions And Organizational Citizenship Behavior And Work Engagement: The Mediating Role Of Overall Organizational Justice, Arika Nakajima Higgins

Master's Theses

Employees’ perceptions concerning their organization’s diversity climate have important implications for both the organization and the individual. Diversity climate research has traditionally focused on exploring the moderators of the relationship between diversity climate perceptions and the attitudinal outcomes of employees; however, research has neglected to examine behavioral outcomes and the potential mediators of the relationship. Therefore, the present study explored the indirect effects of overall organizational justice on the relationship between diversity climate perceptions and organizational citizenship behavior and work engagement. It was hypothesized that diversity climate perceptions would be positively related to organizational citizenship behavior and work engagement. It …

The Moderating Role Of Agreeableness And Conscientiousness On The Relationships Between Burnout And Withdrawal Behaviors, Nikoo Samee

Master's Theses

It has been shown that employees who experience burnout are more likely to engage in withdrawal behaviors, which are behaviors that harm the morale of employees and the bottom line of an organization. There has been some research on the moderating effect of situational variables (e.g., leadership style) on the relationship between burnout and withdrawal behaviors, but there is a lack of research on how personal characteristics may play a role in such relationships. The purpose of this study was to examine the moderating role of agreeableness and conscientiousness on the relationship between burnout and three withdrawal behaviors: lateness, absenteeism, …

Dairy Manure Flushwater Treatment By Algae Raceway Ponds And Aerated Biofilm Reactors, Darin Son

Master's Theses

Nitrogen removal technologies can help dairy industries meet their nutrient management needs. This thesis investigated two separate treatment technologies for total ammonia nitrogen (TAN) removal: algae raceway ponds and aerated biofilm reactors. Six 1000- liter algae raceway ponds and four 1000-liter tote tanks, each equipped with 10 sheets of nonwoven geotextile (i.e., thermally bonded or needle-punched) biofilm substrate, were used to treat the effluent from a flush dairy in central coastal California (TAN = 251 mg/L, cBOD5 = 204 mg/L). For the algae raceway ponds (TAN loading rate = 7 - 35 g/m³-day among 7-, 10- and 14-day hydraulic residence …

Development Of Zeolitic Imidazolate Frameworks For Enhancing Post-Combustion Co2 Capture, Dustin Lee

Master's Theses

Post-combustion CO₂ capture is a promising approach for complementing other strategies to mitigate climate change. Liquid absorption is currently used to capture CO₂ from post-combustion flue gases. However, the high energy cost required to regenerate the liquid absorbents is a major drawback for this process. As a result, solid sorbents have been investigated extensively in recent years as alternative media to capture CO₂ from flue gases. For example, metal organic frameworks (MOFs) are nanoporous materials that have high surface areas, large pore volumes, and flexible designs. A large number of MOFs, however, suffer from 1) low CO …

A Water Balance And Sediment Yield Analysis Model For The Lopez Lake Reservoir, Lee Joon Faraca

Master's Theses

Lopez Lake Reservoir is the primary source of potable water for the Cities of Arroyo Grande, Grover Beach, Pismo Beach, and to the Community Service Districts of Oceano and Avila Beach. In this study, a water balance and sediment yield analysis model was developed for the reservoir’s watershed. The model was used to estimate evaporation from the lake and to examine the effects of a wildfire on the reservoir. Evaporation and wildfire are dependent on variables that change on a spatial and temporal scale, making modeling challenging. The County of San Luis Obispo uses pan coefficients to estimate evapotranspiration losses …

Pressure Driven Desalination Utilizing Nanomaterials, Fangyou Xie

Master's Theses

Nanomaterials such as graphene oxide and carbon nanotubes, have demonstrated excellent properties for membrane desalination, including decrease of maintenance, increase of flux rate, simple solution casting, and impressive chemical inertness. Here, two projects are studied to investigate nanocarbon based membrane desalination. The first project is to prepare hybrid membranes with amyloid fibrils intercalated with graphene oxide sheets. The addition of protein amyloid fibrils expands the interlayer spacing between graphene oxide nanosheets and introduces additional functional groups in the diffusion pathways, resulting in increase of flux rate and rejection rate for the organic dyes. Amyloid fibrils also provide structural assistance to …

Design And Synthesis Of Fluorescent Silica Nanoparticle Conjugates For Metal Ion Sensing Applications, Hank Deuermeyer

Master's Theses

A novel series of fluorescent nanoparticle conjugates were designed and synthesized for the selective turn-off sensing of low concentrations of Cu2+ ion (nM-μM) in 2:1 ethanol:10 mM HEPES (pH 7). Silica nanoparticles (~250 nm) were modified with heterobifunctional polyethylene glycol (PEG) linkers and a third generation PAMAM dendron to function as chelator for Cu2+ ions. The organic dye fluorescein isothiocyanate (FITC) was subsequently conjugated to the dendron to act as a fluorescent sensitizer for the nanoparticle that is quenched upon the binding of Cu2+. Fluorescent nanoparticle conjugates using third and fourth generation PAMAM dendrimers (SNP-G3-FITC and SNP-G4-FITC) were synthesized for …

Localization Of Gli1+ Expressing Cells In Adult Mouse Molars, Divya Puri

Master's Theses

Identification of the mesenchymal stem cell (MSC) population capable of giving rise to odontoblasts secreting dentin during growth (primary dentinogenesis)and repair (reparative dentinogenesis) is critical for the development of improved pulp therapy, regeneration of dentin and ultimately, the bioengineering of functional teeth. Recent lineage tracing studies have led to the identification of several new MSCs and their associated niche referred to as the neurovascular bundle, located at the apical end of the incisor. This newly identified niche contains several populations of MSCs including Gli1⁺(glioma-associated oncogene homolog 1), cells that are activated by Shh secreted by sensory nerves. Furthermore, …

Applying Transit Accessibility Metrics To Locating Affordable Housing, Robert Walsh Smith

Master's Theses

The location of affordable housing in the United States is greatly influenced by how it is funded, and current funding criteria does not make wide use of comprehensive accessibility metrics. To show the benefits of using a comprehensive metric to locate affordable housing, one such metric, the TOI, was compared with more simple measures of transit access in a case study. A qualitative assessment of the comprehensive transit metric showed improvements over a simpler measure currently used by an affordable housing program. Statistical modeling was also performed to see if the TOI could better predict whether households had adequate transit …

Alcohol-Related Consequences: Factor Structure And Associations With Trait Mindfulness And Drinking Motivations, Lauren Carney

Master's Theses

Objective. This two-study project aimed to determine if motivations to use alcohol (coping and social motivations) mediate the relationship between trait mindfulness and a variety of alcohol-related consequences and to determine if the relationship between motivations to use alcohol and alcohol-related consequences is moderated by alcohol use. Study 1 determined the factor structure of positive and negative consequences of alcohol use. In Study 2, this structure served as the outcome across eight moderated mediation models. Method. For Study 1, data were obtained from 165 undergraduate students to perform exploratory factor analysis (EFA) on alcohol-related consequences. For Study 2, …

Snap Assistance, Food Purchasing Behaviors And Dietary Patterns Among Overweight/Obese, Pregnant, Low-Income Latinas, Marta Holovatska

Master's Theses

No abstract provided.

Assessing Seasonal Changes In Body Condition For Spotted (Phoca Largha), Ringed (Pusa Hispida), And Bearded (Erignathus Barbatus) Seals, Michelle Hartwick

Master's Theses

Anthropogenic global warming is causing unprecedented changes to occur within Arctic ecosystems. As sea ice continues to decline in both thickness and extent, ice-adapted species will be particularly affected. Specifically, Arctic seals are reliant on sea ice during critical life-history stages and many of their preferred prey depend on reliable patterns in annual sea ice cover. Thus, ongoing changes will likely affect the ability of Arctic seals to carry out key life-history tasks and maintain positive energy balance. One way to assess energy reserves is through examination of body condition. For seals, this is often done by measuring overall blubber …

Replanting Our Roots: A Best Practices Analysis On How To Empower Arab Migrant Women And Develop Leadership Through Service Work, Linda Ereikat

Master's Theses

This research is focused on identifying the best practices and methods used by community service providers who serve Arab immigrant women, a heavily marginalized and isolated demographic. Specifically, this research seeks to answer, what are the best practices for community engagement, leadership, and empowerment in the lives of Arab migrant women in San Francisco? I examine the elements of community empowerment, engagement, leadership, and methods of providing services from the Asian Women’s Shelter, the Chinatown Community Development Center, and the Arab Resource and Organizing Center. The methods used were personal interviews with key leaders of these organizations. The Arab Resource …

Motivation And Social Withdrawal In Schizophrenia: Factors Related To Passive Social Withdrawal And Active Social Avoidance, Emily Anne Peters

Master's Theses

Schizophrenia is a disabling disorder and social withdrawal in schizophrenia is related to particularly adverse outcomes. Social withdrawal may be a result of “passive” motivation (disinterest or lack of drive to engage with others) or “active” motivation (fear, hostility, or distrust of others). The purpose of this study was to better understand passive social withdrawal and active social avoidance, by exploring their relationships with social abilities and social functioning outcomes. In addition, we explored whether the EEG frontal alpha asymmetry hypothesis, which has been previously linked to shyness and sociability, might contribute to our understanding of social withdrawal motivation.

This …

A Regional Vulnerability Assessment For The Dungeness Crab (Metacarcinus Magister) To Changing Ocean Conditions: Insights From Model Projections And Empirical Experiments, Halle Berger

Master's Theses

Among global coastal regions, the Northern California Current System (N-CCS) is already experiencing effects from ocean acidification and hypoxia during the summer, primarily due to the region’s seasonal upwelling, current systems, and high productivity. Oxygen, pH, and temperature conditions are expected to become more stressful with continued fossil fuel emissions under global climate change, posing a serious threat to the region’s fisheries. N-CCS fishing communities rely heavily on the economically and culturally important Dungeness crab (Metacarcinus magister). The fishery is currently sustainably managed, but potential negative impacts from changing ocean conditions on Dungeness crab life stages and populations …

An Exploration Of Health Misinformation In A Facebook-Delivered Health Education Intervention, Kelsey Arroyo

Master's Theses

Background: Health misinformation is commonly shared on social media but little research has examined how misinformation is communicated and what health messages are most likely to receive misinformed responses on social media. Purpose: The purpose of this work is to explore the extent to which health misinformation was shared by participants in a private Facebook-delivered health education intervention moderated by a health counselor. Methods: We used engagement data from a randomized controlled trial of a yearlong Facebook-delivered health education intervention. We conducted a content analysis of 6,016 participant comments (including original posts and replies) to examine the nature of comments …

Shyness X Niche Interactions Across Five Countries: A Mixed-Methods Exploratory Study, Daniell Carvalheiro

Master's Theses

No abstract provided.

Maleic Anhydride Compatibilized Peach Waste As Filler In Polypropylene And High Density Polyethylene Biocomposites, Caralyn Wong, Stephanie Jung, Joongmin Shin, Ajay Kathuria

Master's Theses

It is estimated that roughly 103, 515 tons of peach waste is produced annually in the US. The majority of the waste is disposed of in landfills, which contributes to climate change as they release 93 million metric tons of CO₂ equivalent. Peach waste principally consists of remaining stone and seed after flesh removal. The agro-waste includes both cellulose and lignin, which can be utilized as a filler in plastic packaging to reduce carbon footprints and material cost. The objectives of this research are (1) to develop peach flour (PF)-filled biocomposites with a polyolefin matrix using maleic anhydride-g-high density …

Determinants Of The Carbon Footprint Of German Swimmers 2020., Ann-Marie Muehlbauer

Master's Theses

The current climate situation is placing our planet and future generations at risk, which demonstrates the urgency to combat climate change and conduct research to support this effort. Calculating the carbon footprint of active sport participation represents an important opportunity to conduct additional research. This study examined the environmental attitudes and practices of swim club members in Germany. The study had three goals: First, to calculate the total and partial carbon footprint of German swimmers; second, to understand how sport organizations induce participants to engage in pro-environmental behavior; and third, to analyze various factors associated with carbon footprint, such as …

The Role Of Notch In Adipose-Derived Stem Cell Adipogenesis, Mengcheng Liu

Master's Theses

Obesity is the leading cause of chronic disease and has contributed to significant health problems and complications. In order to solve this increasingly serious social problem, it is particularly important to deepen the understanding of the biological causes of obesity. Obesity is the result of an increased mass of adipose tissue after excessive caloric intake, and adipogenesis is the main strategy through which the body increases the number of adipocytes. However, due to the lack of research, the current understanding of adipogenesis is not enough to yield results in the clinic.

The regulation of adipogenesis is complex, and the role …

Exploring Experiences With Social Disorganization In Denver Communities, Tiffanie Pham

Master's Theses

Social disorganization theory states that individuals residing in disadvantaged communities are more likely to engage in delinquency and criminality due to the elements the individuals experience (Shaw & McKay, 1969). More specifically, social disorganization theory refers to the failure of the community to fully understand and acknowledge the common goals or solve any issues that the community might be experiencing (Kubrin & Weitzer, 2003). Utilizing social disorganization theory, specifically, the family disruption and poverty elements, the current literature focuses on individuals who reside in disadvantaged communities in Denver, Colorado. By using the qualitative approach, this study relied on in-depth interviews …

Examining The Effects Of Disability Services On Student Success In Higher Education, Rebecca Smith

Master's Theses

Disabled students in higher education are provided resources through reasonable accommodation, or modification of university offerings. This affords the disabled student equal opportunity to benefit from those programs, services, and facilities despite the limitations imposed by their disability. This practice is historically informed by the medical model of disability, and legal reforms such as the Americans with Disabilities Act in 1990 and the Rehabilitation Act in 1973. Most research in this area has found that reasonable accommodation is effective for “leveling the playing field” for disabled college students. Yet, some researchers argue that Universal Design, the composition of an environment …

How Human-Centered Design Affects The Workplace, Alexandra Brigham

Master's Theses

This qualitative study was designed to explore the impact a workplace environment has on employees’ well-being and productivity. The research identified the themes of flattening, perception, unflattening, and well-being from a multidisciplinary approach including art education, fine art, architecture, medicine, philosophy, and science. Flatness is a state, a behavior that occurs when human perception and consciousness are narrowed, blocking sensory information that is not pertinent to a current task. Behavior that is perpetuated by ingrained societal systems and exacerbated by personal, professional, and financial stressors that can impact the human experience. Flattened areas are addressed in this study through a …

Does Race Matter? An Examination Of Defendant Race On Legal Decision Making In The Context Of Actuarial Risk Assessments, Riley Davis

Master's Theses

Numerous examples show how consideration of extra-legal factors, like defendant race, in legal decision-making are contributing to the overrepresentation of minorities in the legal system. Because triers of fact may be less familiar with risk assessment results presented by expert witnesses, there is a need to examine how legal decision-making is being affected by race in this context. This study aimed to examine whether individuals are in fact relying on race as a factor above empirically supported expert opinions of actual violence risk predictions. The sample consisted of 280 participants recruited from Amazon’s Mechanical Turk. To test the primary hypothesis …

Finding Identity Through Survival: The Impact Of The Hurricanes In Zora Neale Hurston’S Their Eyes Were Watching God And Jesmyn Ward’S Salvage The Bones, Crystal F. Giles

Master's Theses

This paper attempts to convey the importance of the hurricane symbol in Zora Neale Hurston’s Their Eyes Were Watching God and Jesmyn Ward’s Salvage the Bones. In both novels, the authors use the imagery of setting combined with the characterization of poor women of color in order to emphasize both the effects of environmental disaster on vulnerable communities and also the inherent power of their protagonists to overcome systemic racism combined with natural disaster. The climax of Zora Neale Hurston’s novel revolves around the deadly 1928 Okeechobee Hurricane in Florida, and the rising action of Jesmyn Ward’s novel peaks …

The Wakefield Phenomenon: A Rhetorical Examination Of The Resurgence Of The Anti-Vaccination Movement In The 20th & 21st Century, Karen Boger

Master's Theses

This thesis explores the phenomenon of the anti-vaccination movement and existing publications documenting significant points in its resurgence in the late 20^th and early 21^st century following the now redacted publication by the former Dr. Wakefield asserting a correlation between children receiving vaccinations and children exhibiting the onset of developmental disorders, with Autism Spectrum Disorder (ASD) garnering the most public attention. With increasing numbers of parents delaying or forbidding their children from receiving vaccinations, along with the re-emergence of previously eradicated disease outbreaks and casualties, questions about the salience of Wakefield’s anti-vaccination statements arise. Investigation here is key …

Mental Healthcare Providers' Personality And Its Relation To Preferences Of Client Personality, Taylor R. Rodriguez

Master's Theses

The incorporation of personality assessment and client treatment preferences in psychotherapy has implications for therapeutic processes and outcomes (e.g., treatment engagement, retention). While this research has largely focused on client characteristics and traits, mental healthcare providers seem to demonstrate differing perspectives of clients as a function of both their own and their clients’ personalities. However, no prior literature has considered providers’ pretreatment preferences of clients. The current study aimed to examine providers’ unique personality profiles and their associations with preferences for client personality characteristics utilizing a person-centered personality approach (i.e., latent profile analysis). Specifically, the study (1) examined providers’ personality …

Effect Of Unilateral Lower-Limb Amputation On Intact Limb Biomechanics: A Systematic Review, Amanda Boyd

Master's Theses

The United States will perform 30,000-40,000 amputations this year (Ertl et al., 2019). As a common medical intervention, there is extensive research regarding rehabilitation strategies and post-operative care. Many studies have explored the effects of the affected limb and prosthetic intervention yet have neglected that of the contralateral limb (De Asha et al., 2014; Jones et al., 2006; Winter & Sienko, 1988). Studies have reported an increase in secondary musculoskeletal conditions among unilateral lower-limb amputees, particularly in the intact limb, indicating the need for additional research (Gailey et al., 2008). The purpose of this systematic review was to investigate the …

State-Level Fiscal Policy And Economic Growth: Assessing Recovery From The 2007 Recession, Nathan Barron

Master's Theses

This research examines state-level fiscal policy responses to the 2007 recession, with a particular focus on the short- and long-run effectiveness of government spending at achieving economic growth. Using OLS regression models to test the impact of government spending, institutional constraints, and economic policy climates on economic growth, this research shows that government spending has a positive impact on growth that decreases into a negative impact over time. Additionally, institutional constraints are consistently found to hinder growth while the effects of policy climate are mixed.