Digital Commons Network^™

Electrode Integration Of Nanostructured Metal And Metal Oxide Materials Based On In-Situ Growth Methods For Environmental Sensors, Xiaochen Wang

Electronic Theses and Dissertations

In the past decades, increased human population and activities have introduced a large amount of pollutants into the environment. Various types of conventional analytical instruments were used for monitoring the emitted chemicals with low detection limit, high accuracy, and discrimination power. However, many of these methods are laboratory-based owing to sample collection, transportation, extraction, and purification steps. To make real-time on-site monitoring possible, miniaturized sensors with various integrated elements were developed. One of the most well-known strategies is to utilize nanostructured materials with enhanced sensing properties for those devices. For a majority of the current state of art devices, the …

The Ethics Of Representation: Muslim Women Reenacting And Resisting Whiteness, Haneen Al Ghabra

Electronic Theses and Dissertations

This study examines Muslim women's performances and embodiment of White femininity. It addresses invisibility/visibility and problematic rhetorical constructs for re-securing and replicating White femininity, which in turn reasserts White masculinity as the dominant ideological structure in service of Whiteness. To be exact, the aim is to specifically focus on how Whiteness travels globally through Muslim bodies and subjects who speak the language of the imperialist and not the vernacular. This language of the imperialist is also the language of heteronormativity, class, and educational privilege. These intersections are not stand-alone categories but instead seep into one another in the service of …

Effects Of Anxiety Treatment Using Coping Cat On Problem Behaviors In The Classroom, Kristen Elise Pearson

Electronic Theses and Dissertations

Children with comorbid anxiety disorders and externalizing problem behaviors and disorders pose an interesting challenge for clinicians. These children are at the greatest risk for the poorest outcomes in several areas of functioning including academics, interpersonal relationships, and emotional regulation. The current single subject research study was implemented to evaluate the effect of an anxiety reduction intervention, Coping Cat, on participants’ anxiety symptoms and behavior problems. The design included a baseline phase, an intervention phase, and a maintenance phase following the implementation of the intervention. Across all three phases, one or more trained research assistants collected behavioral observation data twice …

The First Life Journey Of Many: The Lived Experience Of Lesbian, Gay, Bisexual, Transgender, Questioning Individuals Who Were Raised Within The Catholic Church On Their Coming Out Process, Michelle Colarusso

Electronic Theses and Dissertations

Lesbian, Gay, Bisexual, Transgender, Questioning (LGBTQ) adults encounter societal challenges, pushback from religious organizations, and discrimination from lawmakers which interfere with their ability to come out as their true selves. This qualitative, phenomenologically oriented study explored the LGBTQ identity and practicing Catholic religious beliefs in an attempt to develop a rich description and understanding of the experience of LGBTQ individuals’ coming out process in relation to the practice of Catholic religious beliefs. The central research question that guided this inquiry was the following: What are the lived experiences of persons who identify as Catholic and who have come out as …

Synthesis And Characterization Of Ph/Temperature Dual Sensitive Multiblock Copolymer For Drug Delivery, Hyung Kyung Lee

Electronic Theses and Dissertations

The objective of this study was to develop a novel multiblock copolymer (MBCP) with temperature/pH dual-sensitivity which undergoes gelation at body temperature and degradation at acidic pH for controlled drug delivery applications. The MBCP with molecular weight of 42000 Da was synthesized by polycondensation between an acid-labile ketal linker, 2,2-bis(aminoethoxy)propane (BAP) and Pluronic® P104 using L-lysine diisocyanate ethyl ester (LDI) or 1,6-Diisocyanatohexane (HDI). The gelation temperature of 20% (w/v) MBCP was in the range of 29 to 31 ºC when tested with three different techniques: rheometer, test tube inversion method, and falling ball method. The polymer shopH-triggered degradation and drug …

Moral Psychology And Political Campaigns, Joel Andrew Hanel

Electronic Theses and Dissertations

Theories of moral psychology suggest that American partisans rely on different moral domains to inform their political decision making (Haidt 2012; Lakoff 1996). This project addresses the use of moral framing, language, and traits in American political campaigns. It first examines the language of campaigns to ascertain if Democratic and Republican candidates use moral language in line with moral theories and then attempts to understand if using this language can affect the public in a meaningful way. Overall, the research suggests that campaigns frequently use moral language, though it does not strictly conform to the predictions of existing moral theory …

Ask Your Doctor About Exposure Therapy!: Direct-To-Consumer Marketing Of Empirically Supported Psychological Treatments For Anxiety, Joshua C. Fulwiler

Electronic Theses and Dissertations

Despite efforts to disseminate Evidence-Based Psychological Interventions (EBPIS) to mental health practitioners, most individuals with psychological disorders do not receive any form of treatment, and many others who do seek treatment do not receive EBPIS. The success of the pharmaceutical industry in effectively marketing prescription drugs directly to consumers is considered as a model for advancing dissemination of EBPIS. Utilizing undergraduate students as participants, the current study examined how potential consumers of mental health services respond to internet-based marketing information about EBPIS. Participants vieinformation about anxiety disorders and a specific type of treatment (i.e., cognitive-behavioral therapy) in both text and …

On The Security Of Nosql Cloud Database Services, Mohammad Ahmadian

Electronic Theses and Dissertations

Processing a vast volume of data generated by web, mobile and Internet-enabled devices, necessitates a scalable and flexible data management system. Database-as-a-Service (DBaaS) is a new cloud computing paradigm, promising a cost-effective and scalable, fully-managed database functionality meeting the requirements of online data processing. Although DBaaS offers many benefits it also introduces new threats and vulnerabilities. While many traditional data processing threats remain, DBaaS introduces new challenges such as confidentiality violation and information leakage in the presence of privileged malicious insiders and adds new dimension to the data security. We address the problem of building a secure DBaaS for a …

Ichetucknee Springs: Measuring The Effects Of Visitors On Water Quality Parameters Through Continuous Monitoring., Sarah Faraji

Electronic Theses and Dissertations

Ichetucknee Springs System is in north central Florida, under the jurisdiction of the Suwannee River Water Management District (SRWMD). The Ichetucknee River is one of the most pristine spring-fed rivers in Florida and became a state park in 1970. Over 400,000 people visited the Ichetucknee Springs State Park in 2016. From that total, over 130,000 people came during the tubing season alone (Memorial Day to Labor Day). During the tubing season, only 750 visitors per day are allowed to launch from the North Launch, near the Ichetucknee Head Spring. The park enforces visitor usage of the river during these time …

Detection Of Inorganic Phosphate In Environmental Water Samples Using A Terbium And Gold Nanoparticle-Based Fret Chemosensor, Madeleine Johnson

Electronic Theses and Dissertations

A novel chemosensor for the detection of inorganic phosphate (Pi) in environmental water samples is outlined. The sensing solution is comprised of a luminescent lanthanide, terbium (Tb3+), chelated to ethylenediaminetetraacetic acid (EDTA) acid in solution with cetyltrimethylammonium bromide (CTAB)- capped gold nanoparticles (AuNPs). The Tb-EDTA and AuNPs undergo a Fluorescence resonance energy transfer (FRET) mechanism in which the Tb3+ luminescence is quenched. Upon the addition of inorganic phosphate (Pi), the AuNPs begin to aggregate and precipitate out of solution. The aggregation of AuNPs results in the restoration of the Tb-EDTA signal which can then be correlated to Pi concentration in …

Mucking About: Hydrologic Regime And Soil Carbon Storage In Restored Subtropical Wetlands, Alicia Huber

Electronic Theses and Dissertations

Wetlands are extremely important ecosystems that have declined drastically worldwide, continue to be lost, and are threatened globally. They perform a number of important ecosystem services such as flood control, provide habitat for many species, and have aesthetic and recreational value. Wetlands are also important to the global carbon (C) cycle. Wetland soils are especially effective C sinks because they have high primary productivity and low decomposition rates due to flooded, anoxic conditions. Increased recognition of wetlands' value has led to more ecological and hydrological restoration of degraded wetlands to mitigate the effects of wetland destruction. Hydrological restoration, which attempts …

Characterization Of Novel Borrelia Burgdorferi Transcripts Expressed During Tick And Mammalian Infection, Philip Adams

Electronic Theses and Dissertations

The purpose of this dissertation is to characterize the transcriptome of Borrelia (Borreliella) burgdorferi to discover novel transcripts, important for pathogenesis. As a spirochete and the etiological agent of Lyme disease, the foremost vector-borne bacterial infection in the world, B. burgdorferi fulfills a distinctive niche among bacterial pathogens. Persisting in the disparate environments of a tick vector and mammalian reservoirs, it is absolutely dependent on its hosts for transmission and nutrient acquisition. B. burgdorferi harbors a complex fragmented genome which is largely linear, unlike that of most prokaryotes, lacks an array of classically described metabolic genes, and contains an unusually …

Integrating Forgiveness Therapy And The Treatment Of Anger: A Randomized Controlled Trial, Michael Schaefer Ballard

Electronic Theses and Dissertations

Although the costs of uncontrolled anger are well-known, interventions for anger are less frequently studied and less effective than interventions for either depression or anxiety (NAMA, 2012). One hundred eighty-seven patients requesting anger management treatment at an outpatient counseling center in Denver participated in this study. They were randomly assigned to one of two treatments: an experimental treatment integrating forgiveness therapy and anger management, or anger treatment as usual. Treatment consisted of twelve 90-minute sessions held once a week in small groups led by group facilitators. Participants in both treatment conditions reported clinically significant decreases in state anger and increases …

The Microbial Ecosystem Of Beer Spoilage And Souring: Competition And Cooperation In The Age Of Bioinformatics, Andrew Kettring

Electronic Theses and Dissertations

The brewing industry generates $350 billion in revenue in the US annually, representing 1.9% of the gross domestic product. Spoilage is a persistent problem throughout production and distribution that causes economic loss, and is therefore meticulously avoided. Contrarily, artisanal sour beers are necessarily produced by a diverse variety of these spoilage organisms metabolically interacting in symbiosis as a microbial ecosystem. We sought to gain insight into factors driving assembly of microbial communities by testing a long-debated Darwinian hypothesis. A collection of community members were screened in co-culture and novel bioinformatics tools were developed to predict observed interactions. A fundamental understanding …

Plasticity Of Central And Peripheral Nervous System: Effects Of Oxygen-Glucose Deprivation (Ogd) And Chronic Intermittent Hypoxia (Cih), Jin Chen

Electronic Theses and Dissertations

Transient receptor potential canonical 6 (TRPC6) channels are permeable to Na+ and Ca2+ and are widely expressed in the brain. In this study, we investigated the role of TRPC6 following ischemia/reperfusion (I/R) and oxygen-glucose deprivation (OGD). We found that TRPC6 expression was increased in wild type (WT) mice cortical neurons following I/R and in primary neurons with OGD, and that deletion of TRPC6 reduced the I/R-induced brain infarct in mice and the OGD- /neurotoxin-induced neuronal death. Using live-cell imaging to examine intracellular Ca2+ levels ([Ca2+]i), we found that OGD induced a significant higher increase in glutamate-evoked Ca2+ influx compared to …

Polyelectrolyte And Hydrogel Stabilized Liquid Crystal Droplets For The Detection Of Bile Acids, Jinan Deng

Electronic Theses and Dissertations

Liquid crystal (LC) droplets show great potential as an optical probe for sensor applications due to their large surface areas and stimuli-response director configurations. Bile acids with amphipathic properties, which are formed in liver and secreted into the small intestine, play an important role in the digestion of fats and fat-soluble vitamins. After the digestion process, most of bile acids are recycled back to the liver and ready for the next digestion. Only a few of them are excreted into body fluids. However, there is significant increases in the concentration level of bile acids in body fluids for patients with …

Visual Saliency Detection And Semantic Segmentation, Nasim Souly

Electronic Theses and Dissertations

Visual saliency is the ability to select the most relevant data in the scene and reduce the amount of data that needs to be processed. We propose a novel unsupervised approach to detect visual saliency in videos. For this, we employ a hierarchical segmentation technique to obtain supervoxels of a video, and simultaneously, we build a dictionary from cuboids of the video. Then we create a feature matrix from coefficients of dictionary elements. Next, we decompose this matrix into sparse and redundant parts and obtain salient regions using group lasso. Our experiments provide promising results in terms of predicting eye …

Wearable Passive Wireless Mems Respiration Sensor, Sina Moradian

Electronic Theses and Dissertations

In this study a passive sensor that wirelessly monitors the profile of the human respiratory system is presented. The sensor was designed to be wearable, weighs less than 10 grams and is durable. The sensor is made of a RF piezoelectric MEMS resonator and an ultra-high frequency antenna made of a thin metal film formed on a flexible substrate . The resonance frequency of the TPoS resonator shifts as a function of condensation and evaporation of water vapor on the surface of the resonator and changes in resonator's temperature. These parameters change in each in response to inspiration and expiration …

High Performance Techniques For Face Recognition, Ahmed Aldhahab

Electronic Theses and Dissertations

The identification of individuals using face recognition techniques is a challenging task. This is due to the variations resulting from facial expressions, makeup, rotations, illuminations, gestures, etc. Also, facial images contain a great deal of redundant information, which negatively affects the performance of the recognition system. The dimensionality and the redundancy of the facial features have a direct effect on the face recognition accuracy. Not all the features in the feature vector space are useful. For example, non-discriminating features in the feature vector space not only degrade the recognition accuracy but also increase the computational complexity. In the field of …

Precision Metrology Of Laser Plasmas In The Xuv Band, John Szilagyi

Electronic Theses and Dissertations

The XUV band, a region of light spanning the wavelength range of 5 - 200 nm, is located between the Ultraviolet and X-ray regions of the electromagnetic spectrum. It is further divided into a 100 - 200 nm region called the Vacuum Ultraviolet (VUV), and a 5 – 100 nm region called the Extreme Ultraviolet (EUV). Applications of this light have been slow to develop due to the lack of suitable sources, efficient optics, and sensitive detectors. Recently, many industries such as the semiconductor manufacturing industry, medical surgery, micromachining, microscopy, and spectroscopy have begun to benefit from the short wavelengths …

Not Woman Enough Harassment: Scale Development And An Integrated Model From Antecedent To Outcome, Amanda Wolcott

Electronic Theses and Dissertations

The rise of research on workplace mistreatment in the past twenty years can be attributed to the realization that workplace mistreatment is associated with a host of deleterious outcomes for both the individual targets of the mistreatment and the organizations in which they work. However, the extant literature is failing to capture the full range of sex-based mistreatment that people may experience through a tendency to focus solely on sexual harassment and sex discrimination, which are very specific types of behavior based on one's sex and gender stereotypes. In this dissertation, I introduce the construct of Not Woman Enough Harassment, …

"Unorthodox Conduct": Re-Membering Queer Africa In Literature And Film, Matthew Patrick Durkin

Electronic Theses and Dissertations

"'Unorthodox Conduct'" explores positive representations of sexual and gender minorities in African literatures and film from the 1970s to 2010s that dismantle heterosexist notions of African sexuality and work towards what Ngũgĩ wa Thiong'o calls "re-membering." I interrogate how literary and cinematic depictions of same-sex sexualities resist contemporary homophobic attitudes, particularly those espoused by government and spiritual leaders. Positive literary and cinematic representations of queer Africans, however, have only emerged in recent years. These literary and cinematic representations are routinely minimized or ignored in academia as valid avenues for the navigation of interpersonal relationships and socio-political strife in queer African …

Techno-Salvation: Developing A Christian Hermeneutic Of Enhancement Technology, Richard Landrum Wilson

Electronic Theses and Dissertations

A cadre of scientists, philosophers, and ethicists labeled transhumanists and posthumanists argue that by strategic use of technology we can greatly enhance human beings into our next stage of evolution. Rather than leave the evolutionary process to natural results, transhumanists and posthumanists want to shape humanity to meet our own desires. This direct goal of changing human beings has profound implications for Christian faith and practices. At the same time, there is no reason to think that the utilization of technological enhancements will not happen. As such, to best meet the challenge, it is unavoidable for Christians to engage transhumanism …

Culture Counts: Examining The Effectiveness Of A Culturally Focused Empowerment Program For At-Risk Black Girls, Candice Nicole Aston

Electronic Theses and Dissertations

Traditionally, many of the problems experienced by Black girls were overshadowed by the ongoing crises facing Black Males. Although important, the focus on Blackness and masculinity often implicitly leaves young Black girls on the sidelines and fails to recognize their unique obstacles. Fortunately, there has been a new surge of social concern revolving around the plight of Black girls in the school system. New estimates report that Black girls are facing an educational crisis in regards to disproportionate discipline practices and academics (Morris, 2012). To date, there has been very limited research in regards to school-based interventions that have been …

Examining The Moderating Effects Of Racial Socialization On Teacher Discrimination For The Psychological Outcomes Of Black Middle School Girls, Kayla Nichols

Electronic Theses and Dissertations

A hierarchical multiple regression was used to understand the 1) the predictive ability of teacher discrimination on racial identity, 2) the predictive ability of teacher discrimination and racial identity on the educational beliefs and psychological outcomes of early adolescent Black girls, and 3) if egalitarian messages of racial socialization moderate the risk of teacher discrimination on the psychological outcomes for early adolescent Black girls. Participants were 8th grade Black girls from Wave 3 of the MADICS dataset (Eccles, 2010). Results showed that teacher discrimination had a negative relationship and predicted 5% of the variance in connection to heritage, educational beliefs, …

The Salvation Of The Cosmos: Benedict Xvi's Eschatology And Its Relevance For The Current Ecological Crisis, Jeremiah Vallery

Electronic Theses and Dissertations

Pope Emeritus Benedict XVI has elements of a cosmic eschatology embedded in his theological oeuvre that have not heretofore been extensively systematized. This dissertation fills this gap by contextualizing Benedict’s cosmic eschatology in the twentieth and twenty-first centuries, examining his Logos theology and his view on the fate of the cosmos, exploring his cosmic liturgy, and evaluating his concept of human ecology and pneumatology. Benedict insufficiently links his cosmic eschatology to his papal teachings on the environment; however, his cosmic eschatology can be developed in fruitful ways. After providing a thorough articulation of Benedict’s cosmic eschatology, I offer my own …

Burden Of Illness And Pharmacoeconomic Evaluation Of Lumacaftor/Ivacaftor In Cystic Fibrosis, Pratyusha Vadagam

Electronic Theses and Dissertations

Objectives: (1) To estimate the burden of illness in cystic fibrosis (CF) using 2010-2014 Medical Expenditure Panel Survey (MEPS) data, and (2) to conduct a pharmacoeconomic evaluation of lumacaftor/ivacaftor in the treatment of CF.

Methods: The study was conducted in two parts. Part 1 involved a retrospective analysis using individuals in MEPS database with an International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) diagnosis code of 277.00 for a principal diagnosis of CF. Dependent variables were cumulative and out-of-pocket (OOP) expenditures and independent variables included patient demographics and clinical characteristics. Unweighted and weighted estimates of expenditure in CF group, …

Chaotification As A Means Of Broadband Vibration Energy Harvesting With Piezoelectric Materials, Daniel Geiyer

Electronic Theses and Dissertations

Computing advances and component miniaturization in circuits coupled with stagnating battery technology have fueled growth in the development of high efficiency energy harvesters. Vibration-to-electricity energy harvesting techniques have been investigated extensively for use in sensors embedded in structures or in hard-to-reach locations like turbomachinery, surgical implants, and GPS animal trackers. Piezoelectric materials are commonly used in harvesters as they possess the ability to convert strain energy directly into electrical energy and can work concurrently as actuators for damping applications. The prototypical harvesting system places two piezoelectric patches on both sides of the location of maximum strain on a cantilever beam. …

The Study Of Physiochemical Properties Of Cerium Oxide Nanoparticles And Its Application In Biosensors, Swetha Barkam

Electronic Theses and Dissertations

Biosensors continue to get smaller and faster with the advancement in nanotechnology through the use of nanomaterials to achieve high sensitivity and selectivity. However, the continued reliance on biomolecules or enzymes in the biosensor assembly poses the problem of reproducibility, storage and complexity. This dissertation research address some of the challenges by investigating the physiochemical properties of nanoparticles to understand its interaction with biological systems and develop enzyme free biosensors. In this study, we have demonstrated a novel strategy to integrate cerium oxide nanoparticles (CNPs) as an efficient transducer through rigorous screening for developing enzyme/label free biosensors for detecting analytes …

Investigating Novel Water Treatment Methods And Monitoring Techniques For Sulfide-Laden Groundwater Supplies, Benjamin Yoakum

Electronic Theses and Dissertations

This dissertation reports on research related to novel water treatment and monitoring techniques for sulfide-laden groundwater supplies. The dissertation is divided into several chapters with four core chapters focused on investigations studying a novel water treatment method or monitoring technique. The first investigation assessed the efficacy of multi-pass spray aeration treatment to remove trihalomethanes (THMs) and to reduce the total THM formation potential (TTHMFP) of an aerated water column post-aeration. A recirculating spray aeration pilot unit was constructed to make this assessment. To assess the effect of multi-pass spray aeration on the TTHMFP, water was recirculated through a fabricated spray …