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Master's Theses

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The Effect Of Plastic On Leaf Litter Breakdown In Urban Streams, Lisa Haneul Kim Jan 2020

The Effect Of Plastic On Leaf Litter Breakdown In Urban Streams, Lisa Haneul Kim

Master's Theses

The plastic component of anthropogenic litter (AL) is an emerging ecological concern and has been a focus of research, as it is long-lived, mobile, interacts with physical and chemical components of aquatic ecosystems, and breaks down into smaller pieces (i.e., microplastic, <5mm particles). Rivers are considered a major source of plastic to oceans, but little is known about plastic's abundance, distribution, and effects on ecological processes in urban streams. Previous studies report plastic is abundant in freshwater systems, especially in naturally occurring debris dam structures and overhanging vegetation which accumulate high quantities of AL, especially plastic items (i.e. bags, wrappers, packaging material), along with leaf litter and other coarse particulate organic matter. in temperate, forested streams, leaf litter is a critical food source and plays an essential role in the stream food web. the rate at which leaves break down is affected by many variables such as hydrology, water chemistry, and macroinvertebrate and microbial communities. We predicted that plastic accumulation along with leaf litter can slow leaf breakdown by reducing diversity and abundance of microbial decomposers, as well as macroinvertebrate consumers. We measured leaf breakdown, and characterized macroinvertebrate and microbial (i.e., bacterial, fungal, algal) communities in 3 litter bag treatments: leaves alone, plastic alone, and leaves mixed with plastic. Although plastic did not reduce leaf breakdown rates or have a significant effect on macroinvertebrate consumer communities, it showed distinct microbial communities compared to leaf substrates. Results will provide a new understanding of how plastic and microbial communities interact, and set the framework for future studies to look at microbial succession and macroinvertebrate diversity on other synthetic substrates in freshwater systems.


An Experimental Test Of Fiedler's Contingency Model Of Leadership Effectiveness: The Effect Of Gender, Samantha De Souza Jan 2020

An Experimental Test Of Fiedler's Contingency Model Of Leadership Effectiveness: The Effect Of Gender, Samantha De Souza

Master's Theses

The present study is an experimental test of Fiedler's (1967) Contingency Model of Leadership Effectiveness across genders, as Fiedler's Contingency Model has been tested largely with male participants. The model predicts group performance based on four key variables: leadership style, as indexed by the Least-Preferred Coworker (LPC) Scale, and three situational variables, leader-member relations, task structure, and position power. In situations characterized by high leader-member relations, and low position power, Fiedler predicts a negative correlation between the leader's LPC score and group performance when groups perform a structured task (Octant II), and a positive correlation when groups perform an unstructured …


Is It Because I'M Black Or A Woman? Constructing An Intersectional And Trauma-Informed Model Of Social Support, Moriah Lynn Johnson Jan 2020

Is It Because I'M Black Or A Woman? Constructing An Intersectional And Trauma-Informed Model Of Social Support, Moriah Lynn Johnson

Master's Theses

Inequality in the lives of Black women comes in many forms. As Kimberle Crenshaw observed, Black women experience inequality through the criminal (in)justice system, political and popular cultural representations that stereotype and exclude Black women and when accessing much needed social services (1991). As in the tradition of Black feminist scholars like Kimberle Crenshaw and Rose M. Brewer, this paper challenges stereotypical conceptions of Black womanhood within and outside of sociology, while proposing a relationship between the scholarship and social inequalities experienced by Black women. From this framework, I examine the inequalities Black women experience when accessing social services, consider …


Effects Of Pharmaceutical Contamination On Sedment Microbial Communities In Streams, Benjamin Joseph Lorentz Jan 2020

Effects Of Pharmaceutical Contamination On Sedment Microbial Communities In Streams, Benjamin Joseph Lorentz

Master's Theses

The objective of this study was to examine the interaction of pharmaceuticals and personal care products (PPCP) and microbial communities in freshwater ecosystems. This study included two components. The first component consisted of an artificial stream study in which sediment was exposed to environmentally relevant concentrations of three different pharmaceuticals (diphenhydramine, ciprofloxacin, and fluoxetine) individually and as a mixture. Pharmaceutical exposure had no effect on denitrification rates or respiration rates in the sediments, and sediment microbial community composition showed only slight differences between streams dosed with pharmaceuticals and control streams. The second component consisted of a field study in which …


Zika Virus Inactivates Polyamine Catabolism Via Alternative Splicing To Enhance Infection, Marion Lea Graham Jan 2020

Zika Virus Inactivates Polyamine Catabolism Via Alternative Splicing To Enhance Infection, Marion Lea Graham

Master's Theses

During viral infection, the virus and host must compete for resources inside the cell. One of these resources is polyamines. Polyamines are small, positively charged molecules that are found in all eukaryotic cells. They play a key role in several cellular functions including growth and proliferation, transcription and translation, and membrane stability. Viruses also rely polyamines for productive replication, utilizing them during DNA/RNa polymerization, nucleic acid packaging, and protein synthesis. in response to a virus infecting a host cell, the host cell will begin to regulate polyamine levels as a way to combat the infection. Polyamine levels are regulated by …


The Characterization Of Inflammatory Extracellular Vesicles, Barak Balva Jan 2020

The Characterization Of Inflammatory Extracellular Vesicles, Barak Balva

Master's Theses

One of the driving factors behind innate immunity is the early response of inflammation. While beneficial in controlling infections, when uncontrolled it can lead to a plethora of disorders. Thus, it is essential to understand the driving factors behind inflammation. a cell's ability to recycle, discard, or transfer proteins is integral for survival and intercellular communication. It has been appreciated that inflammatory components, such as caspase-1, play a huge role in driving protein secretion. Thus, inflammation also plays a role in the distribution of proteins released from cells. These proteins are released via non-conventional secretory pathways, and our lab is …


The Effect Of Imagined Intergroup Contact On Heterosexism, Laurel Mertz Jan 2020

The Effect Of Imagined Intergroup Contact On Heterosexism, Laurel Mertz

Master's Theses

Heterosexism and other forms of prejudice against the LGBTQ community remain prevalent across the world. Thus, the study of how to reduce heterosexism has become a much more common and necessary domain of research in recent years. Previous research has demonstrated mixed results of the effect of imagined intergroup contact on heterosexism. the current study sought to evaluate various contexts in which imagined intergroup contact would decrease or increase levels of both implicit and explicit heterosexist attitudes. I predicted that individuals who imagined winning a basketball game with a gay teammate would display more positive attitudes toward gay men whereas …


Investigating Dispersal Ability To Infer Diversification In The Birds Of Madagascar, Robert D. Lauer Jan 2020

Investigating Dispersal Ability To Infer Diversification In The Birds Of Madagascar, Robert D. Lauer

Master's Theses

The objective of this study was to investigate whether dispersal ability, as measured by a proxy of hand-wing index 2, influenced diversification of the birds of Madagascar at two scales. Madagascar is home to several avian lineages that have diversified greatly while other lineages are only represented by a single species. a key question in evolutionary biology is why some of these lineages diversified while others did not. One way to address this is to examine what features of these lineages promotes their diversification. Recent studies have focused on the relative importance of dispersal ability to diversification at the continental …


Tumor Immunology: Understanding The Immune System And Cancer To Enhance The Efficacy Of Cancer Immunotherapies, Natasha Malibu Lenart Jan 2020

Tumor Immunology: Understanding The Immune System And Cancer To Enhance The Efficacy Of Cancer Immunotherapies, Natasha Malibu Lenart

Master's Theses

Tumor cells are notorious for their ability to escape immune surveillance, but developments in the understanding of the tumor microenvironment and how the immune system can be re-activated in tumors have had significant clinical impact. Commercially available and experimental methods such as adoptive cellular therapy, cytokine stimulation, and immune checkpoint blockade are promising immunotherapies for a variety of cancers, including solid tumors and hematological malignancies. However, induction of persistent, long-term anti-tumor immunity after initial treatment is infamously difficult. as a result, scientists are searching for new approaches to improve established immunotherapies. by employing combination treatments or enhancing the functionality of …


The Longitudinal Relationship Between Callous-Unemotional Traits And Exposure To Community Violence: Examining Primary And Secondary Psychopathy In Serious Adolescent Offenders, Elizabeth Sargent Jan 2020

The Longitudinal Relationship Between Callous-Unemotional Traits And Exposure To Community Violence: Examining Primary And Secondary Psychopathy In Serious Adolescent Offenders, Elizabeth Sargent

Master's Theses

in youth, psychopathy is often represented by callous-unemotional traits, characterized by a lack of guilt and empathy. While justice-involved youth can exhibit such traits, less research has been done in adolescents than has been with adults in the justice system. Still, previous research supports that callous-unemotional traits in particular can predict higher risk for adverse outcomes and violent behavior in youth. Various vulnerabilities and experiences contribute to the development of callous-unemotional traits, and while some individuals with psychopathic traits are thought to have been born with an innate inability to feel empathy (primary psychopathy), others may experience psychological distress in …


Latino Parents' Acculturative Stress And Their Preschoolers' Prosocial Development: Testing The Mediating Role Of Parenting Style, Zahra Fatima Naqi Jan 2020

Latino Parents' Acculturative Stress And Their Preschoolers' Prosocial Development: Testing The Mediating Role Of Parenting Style, Zahra Fatima Naqi

Master's Theses

Studies increasingly recognize the importance of cultural factors when studying the development of immigrant children from low-income backgrounds. There is reason to believe that parents' acculturative stress may be linked to children's prosocial development, via parenting. the present study included a sample of immigrant Latino parents of 3- to 5-year-old Head Start preschoolers (N = 28) to examine how parents' acculturative stress might be associated with children's prosocial behavior at home, as reported by parents, and at school, as reported by teachers. Furthermore, it studied whether this linkage is mediated by warm, supportive, and hostile parenting practices. Results indicated that …


Condition Severity And Parent Psychosocial Functioning In Families Of Youth With Spina Bifida: The Role Of Parental Attitudes And Beliefs, Elicia Wartman Jan 2020

Condition Severity And Parent Psychosocial Functioning In Families Of Youth With Spina Bifida: The Role Of Parental Attitudes And Beliefs, Elicia Wartman

Master's Theses

Past research suggests that parents of youth with spina bifida (SB) have worse psychosocial outcomes than parents of typically developing youth. SB is a complex medical condition that is accompanied by varying degrees of physical disability and cognitive deficits. Research on stress and coping suggests that parents' attitudes and beliefs may contribute to their own psychosocial adjustment. This study unpacks condition severity and examines the role of severity of condition-related factors in predicting parental adjustment and parental attitudes and beliefs. Participants were recruited as part of a larger longitudinal study. Information on condition severity, including type of SB, lesion level, …


The Creation And Evolution Of Introductory Courses In Women's Studies Programs, Tori Kay Olson Jan 2020

The Creation And Evolution Of Introductory Courses In Women's Studies Programs, Tori Kay Olson

Master's Theses

This study seeks to understand what affects knowledge production in introductory women's studies courses. Using critical discourse analysis, the study looks at the archives of two very different programs within the Chicago area. the two programs studied, Loyola University Chicago and University of Illinois€”Chicago, offer two different examples of how women's studies programs were created and evolved, and how this influenced the knowledge production in their introductory courses. in addition to the archival materials of these two universities, this study relies on various reports and accounts written by women's studies scholars during the same timeframe as the documented archival material …


"Location, Location, Location": How Where A Prisoner Is Housed Influences The Prison Disciplinary Process, Phillip Thomas Whittington Jan 2020

"Location, Location, Location": How Where A Prisoner Is Housed Influences The Prison Disciplinary Process, Phillip Thomas Whittington

Master's Theses

The primary objective of this research is to gauge the extent to which Illinois' prisons vary in the severity of disciplinary sanctions imposed upon prisoners found guilty of committing similar rule violations. This research also seeks to identify factors that are most determinative of severity of disciplinary sanctions imposed upon prisoners after accounting for variance between prisons. the sample was constructed using data provided by Illinois prison officials concerning all prisoners released from prison in Illinois during a four-year period who were found guilty of committing at least one rule violation during their last term of incarceration. the research objective …


Induction Of Zika And Dengue Virus-Specific Cd8+ T Cells By Means Of Dna Vaccine, Natalie Jachym Jan 2020

Induction Of Zika And Dengue Virus-Specific Cd8+ T Cells By Means Of Dna Vaccine, Natalie Jachym

Master's Theses

Zika virus (ZIKV) and Dengue virus (DENV) are flaviviruses that circulate in the same endemic regions and can co-infect the same individual. While primary infection by DENV leads to life-long immunity to the infecting serotype, it does not provide immunity to other serotypes. Moreover, ZIKV and DENV antibodies can be cross-reactive and potentially enhance infection of the other virus through a process known as antibody-dependent enhancement (ADE). In this mechanism, antibodies weakly bind the infecting virus and direct virions to immunoglobulin Fc receptors on macrophages. This promotes viral uptake and infection rather than neutralize the virus. Due to this mechanism, …


Reducing Reperfusion Injury In An Adult Rat Stroke Model With St-115 Treatment, Morgan Rae Lenz Jan 2020

Reducing Reperfusion Injury In An Adult Rat Stroke Model With St-115 Treatment, Morgan Rae Lenz

Master's Theses

The restoration of blood flow to ischemic cerebral tissue can result in reperfusion injury, and blocking reperfusion injury can significantly aid in recovery of ischemic tissue. Bradykinin has been shown to exhibit protective effects, but does not reach protective levels during reperfusion due to inactivation by aminopeptidase P2 (APP2). Therefore, inhibiting APP2 during reperfusion is a potential therapeutic strategy to aid in the reduction of reperfusion injury, leading to the development of ST-115, an APP2 inhibitor. It was hypothesized that administration of ST-115 during ischemic stroke, and just prior to reperfusion, will result in reduced neurological injury and increased functional …


Emotion Reactivity And Its Relation To Daily Affect And Sleep Experiences Among First Year College Students, Elizabeth Marie Rea Jan 2020

Emotion Reactivity And Its Relation To Daily Affect And Sleep Experiences Among First Year College Students, Elizabeth Marie Rea

Master's Theses

Individuals with high emotion reactivity may be at increased likelihood to experience emotions more intensely, frequently, and for longer periods of time than those with low emotion reactivity. This might lead to more extreme fluctuations in their daily experience of emotion. Additionally, those high in emotion reactivity may be at risk for poor sleep. The transition to college has been shown to be a difficult time for some students, and potentially contribute to these emotional fluctuations and shorter sleep duration. However, students high in emotion reactivity might be more likely to experience the negative effects of this transition than those …


A Chronic Route?: Examining The Path Between Community Violence Exposure, Posttraumatic Stress & Juvenile Delinquency In Low-Income, Urban, African-American Youth, Kaleigh Valencia Wilkins Jan 2020

A Chronic Route?: Examining The Path Between Community Violence Exposure, Posttraumatic Stress & Juvenile Delinquency In Low-Income, Urban, African-American Youth, Kaleigh Valencia Wilkins

Master's Theses

Background: Exposure to community violence (ECV; direct victimization and witnessing) can predict negative outcomes for youth such as posttraumatic stress (PTSS) and juvenile delinquent behavior (JDB). Psychosocial reactions to violence can be different based on gender. Predictors of ECV in youth is less understood. This study aims to explore potential chronic pathways between initial ECV and continued ECV for early adolescents. The relationship between ECV as a predictor and ECV as an outcome is hypothesized to be mediated by both PTSS and JDB and moderated by gender. Method: A total of 266 African-American, sixth grade students in high crime, high …


The Relationship Between Flexible Work Arrangements And Work-To-Family Conflict: The Role Of Self-Control, Michelle Ching Klinker Dec 2019

The Relationship Between Flexible Work Arrangements And Work-To-Family Conflict: The Role Of Self-Control, Michelle Ching Klinker

Master's Theses

The purpose of the current study was to examine the relationship between flexible work arrangements and work-to-family conflict. Previous research has not yet examined the possible moderating impact of personal characteristics on this relationship. Therefore, this study also examined self-control as a moderator of the relationship between flexible work arrangements and employees’ experience of work-to-family conflict. A total of 131 participants participated in an on-line survey. Results showed that those who had flexplace and flextime available to them in their organizations tended to experience less work-to-family conflict than those who did not have flexplace and flextime available to them. Furthermore, …


The Top-Down Influences Of Characteristic Sounds On Visual Search Performance In Realistic Scenes, Ghazaleh Mahzouni Dec 2019

The Top-Down Influences Of Characteristic Sounds On Visual Search Performance In Realistic Scenes, Ghazaleh Mahzouni

Master's Theses

The purpose of this experiment was to investigate whether meaningful sounds can facilitate visual search performance in the context of realistic scenes. It also aimed to determine whether the stimulus onset asynchrony (SOA) of sound and picture is a significant factor in enhancing performance. A 3 X 4 X 2 within subject design was used with independent factors sound congruency (congruent, incongruent and white noise), SOA (-1000, -500, 0, 300 ms), and target presence (present and absent). Participants were 55 (34 female and 21 male) college aged students at San Jose State University. On each trial participants were presented with …


Non-Invasive Hyperglycemia Detection Using Ecg And Deep Learning, Renato Silveira Cordeiro Dec 2019

Non-Invasive Hyperglycemia Detection Using Ecg And Deep Learning, Renato Silveira Cordeiro

Master's Theses

Hyperglycemia is characterized by an elevated level of glucose in the blood. It is normally asymptomatic, except for an extremely high level, and thus a person can live in that state for years before the negative - sometimes irreversible - health impacts appear. Unexpected hyperglycemia can also be an indication of diabetes, a chronic disease that, when not treated, can lead to serious consequences, including limb amputations and even death. Therefore, identifying hyperglycemic state is important. The most common and direct way to measure a person’s glucose level is by directly assessing it from a blood sample by pricking a …


Comparing Levels Of Environmental Literacy Between Stars- And Non-Stars-Rated Universities, Analisa Kathleen Campos Dec 2019

Comparing Levels Of Environmental Literacy Between Stars- And Non-Stars-Rated Universities, Analisa Kathleen Campos

Master's Theses

The Sustainability Tracking, Assessment, and Rating System (STARS) is a program that measures university sustainability levels. STARS ranks university campuses based on the number of points received from individual specifications such as green buildings, access to mass transit, number of environmental courses, and more. Therefore, the rank a school receives translates directly to its level of sustainability as an institution. Currently, it is unknown if there is a relationship between a campus’s STARS-rating and individual students’ environmental literacy (EL). The purpose of this project was to analyze the impacts of university’s sustainable features on student EL. Surveys were administered to …


Factors Affecting Polymer Brush Thermal Stability, Alexis Sarabia Dec 2019

Factors Affecting Polymer Brush Thermal Stability, Alexis Sarabia

Master's Theses

Nanostructures, features that are generated on the scale of 1-100 nm, have potential in many applications including semiconductors and sensors. Mixed polymer brushes, which are composed of two or more unique polymer types covalently tethered to a solid surface, have been shown to give rise to distinct nanostructures. The solid support for these systems can be flat surfaces, such as silicon wafers, or 3-dimensional surfaces, such as nanoparticles. Polymer brushes are mechanically and chemically robust, but their thermal stability is not well understood. Because many potential applications require elevated temperatures, understanding and tuning their thermal stability is important. We studied …


Habitat Selection Of The Spotfin Killifish In Coastal Connecticut, Megan L. Upp Dec 2019

Habitat Selection Of The Spotfin Killifish In Coastal Connecticut, Megan L. Upp

Master's Theses

The Spotfin Killifish (Fundulus luciae) is a salt marsh inhabitant, occupying a habitat subject to change from 1) historic changes from mosquito ditching practices to 2) more contemporary anthropogenic changes from sea level rise and coastal development. Though thought to be a habitat specialist along the Atlantic coast, Spotfin Killifish resource selection has yet to be quantified. Spotfin Killifish presence or absence data was recorded with measured habitat characteristics at sites along a 14 km stretch of coastal Connecticut. Three hypotheses were proposed to create probabilistic models that could predict Spotfin Killifish presence or absence using logistic regression: …


Allies In Training: The Construction & Management Of Cis Allyship At State University, Davida J. Schiffer Dec 2019

Allies In Training: The Construction & Management Of Cis Allyship At State University, Davida J. Schiffer

Master's Theses

Many universities provide LGBT Ally Training Programs, but who are the allies who attend them? My research examines how participants conceptualize cis allyship and how they enact it in their professional and personal lives. In describing the gendered and racialized role of cis allyship, I situate my analysis in theories of doing gender & performativity (West & Zimmerman 1987; Johnson 2013) and the scholarship around white allies in academic diversity narratives (Bonilla-Silva 2006; Collins & Bilge 2016). Focusing on an Ally Training program at State University, I conducted an ethnography of 4 Ally Trainings and performed 21 interviews with 12 …


Atrial Fibrillation Detection From Smartwatch Based Photoplethysmography Signals, Syed Khairul Bashar Dec 2019

Atrial Fibrillation Detection From Smartwatch Based Photoplethysmography Signals, Syed Khairul Bashar

Master's Theses

Detection of atrial fibrillation (AF) from a wrist watch photoplethysmography (PPG) signal is important because the wrist watch form factor enables long term continuous monitoring of arrhythmia in an easy and non-invasive manner. We have developed a novel method not only to detect AF from a smart wrist watch PPG signal, but also to determine whether the recorded PPG signal is corrupted by motion artifacts or not. In order to detect the motion and noise artifacts from PPG signal, we have used both the accelerometer signal and variable frequency complex demodulation based time-frequency analysis of the PPG signal. After the …


Keeping Track Of Change: Developmental Insights Into The Ability To Represent Objects In Episodic Terms, Emily Yearling Dec 2019

Keeping Track Of Change: Developmental Insights Into The Ability To Represent Objects In Episodic Terms, Emily Yearling

Master's Theses

No abstract provided.


Cultivating Hope, Weaving Peace: Colombian Educators Building Pathways To Teach About The Armed Conflict, Laura Vesga Villalba Dec 2019

Cultivating Hope, Weaving Peace: Colombian Educators Building Pathways To Teach About The Armed Conflict, Laura Vesga Villalba

Master's Theses

Communities affected by conflict require additional educational support in order to adequately reflect on their situation and learn peacebuilding skills. Research is needed to examine how peacebuilding education is being approached through an intergenerational lens, to address the trauma that is carried throughout generations and the healing and reconciliation that may be brought about through successful critical peacebuilding education programs. The purpose of this study is to analyze the formal and informal educational approaches to teaching about the armed conflict in Colombia. The research methodology for this study was phenomenological research conducted through semi-structured interviews. Results illustrated that educational approaches …


Investigating The Relationship Between Hormone Receptors Dax-1 And Estrogen Receptor Within Prostate Cancer Cell Lines, Meghana G. Vijayraghavan Dec 2019

Investigating The Relationship Between Hormone Receptors Dax-1 And Estrogen Receptor Within Prostate Cancer Cell Lines, Meghana G. Vijayraghavan

Master's Theses

Prostate cancer (PCa) is estimated to be the second leading cause of cancer-related deaths among men in the United States in 2019. While most prostate tumors rely on androgens for growth signaling, there are subsets of tumors that become androgen-resistant, therefore resisting conventional androgen-depravation therapy. Consequently, research has focused on targeting different hormone receptors for novel therapeutics. One such receptor is Dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1 (DAX-1). DAX-1 is known to interact with other hormone receptors, such as androgen receptor (AR) and estrogen receptors (ERs) to suppress the proliferative effects …


Characterization And Membrane Stability Study For The Switchable Polarity Solvent N,N-Dimethylcyclohexylamine As A Draw Solute In Forward Osmosis, Kevin K. Reimund Dec 2019

Characterization And Membrane Stability Study For The Switchable Polarity Solvent N,N-Dimethylcyclohexylamine As A Draw Solute In Forward Osmosis, Kevin K. Reimund

Master's Theses

No abstract provided.