Digital Commons Network^™

Searches For Fast Radio Bursts Using Machine Learning, Devansh Agarwal

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fast Radio bursts (FRBs) are enigmatic astrophysical events with millisecond durations and flux densities in the range 0.1-100 Jy, with the prototype source discovered by Lorimer et al. (2007). Like pulsars, FRBs show the characteristic inverse square sweep in observing frequency due to propagation through an ionized medium. This effect is quantified by the dispersion measure (DM). Unlike pulsars, FRBs have anomalously high DMs, which are consistent with an extragalactic origin. Over 100 FRBs have been published at the time of writing, and 13 have been conclusively identified with host galaxies with spectroscopically determined redshifts in the range 0.003 ≤ …

The Fight Is Still On: An Ethical Analysis Of The American Civil Liberties Union’S Partisan Rhetoric In The Trump Era, Emily Charlotte Gerber

Graduate Theses, Dissertations, and Problem Reports (ETD)

The 2016 U.S. presidential election of Donald Trump generated a newfound surge in political advocacy that greatly benefitted certain nonprofits and grassroots organizations. One of these organizations was the American Civil Liberties Union, a nonpartisan nonprofit dedicated to protecting and defending civil liberties and rights in the U.S. The ACLU received an unprecedented number of donations following Election Day and has since pursued an aggressive campaign against President Donald Trump.

In order to explore this phenomenon, this thesis analyzed the ACLU’s rhetoric between Presidents George W. Bush and Donald Trump (both Republicans) and between Presidents Barack Obama (Democrat) and Donald …

Memories Of Judgment: Constructing The Icty's Legacies, Diane Orentlicher

Scholarly Articles in Law Reviews & Journals

As the title of this symposium reflects, a critically important dimension of the Tribunal's legacy is its role in understanding the war and genocide in Bosnia. In my remarks, I want to drill down on the word "understanding," one of the most complex facets of the ICTY's legacy. In brief, I will make four points. The first is that the ICTY's expected contribution to understanding the 1990s conflict in Bosnia and the atrocities associated with that conflict was deeply important to many individuals whom I have interviewed in Bosnia-Herzegovina, as well as in Serbia, about the ICTY's impact in their …

The Use Of Differing Verb Types In The Oral Narratives Of School-Age Children, Allison Ann Switzer

Graduate Theses, Dissertations, and Problem Reports (ETD)

The aim of this project was to examine the use of action, metacognitive, and metalinguistic verbs in narratives relative to age-related growth for children with typical language and their peers with a language-based disorder. While limited information is known about the use of these differing verb types, there is evidence to show that metacognitive and metalinguistic verbs are less salient than action verbs, and therefore have a longer trajectory of acquisition. The oral narratives of 84 typically developing students were coded for occurrences of action verbs, metacognitive verbs, and metalinguistic verbs to obtain a total use as well as to …

Exploring The Challenges Of Social Integration Within An Upper-Level Public Relations Classroom, Tabitha Hayley Dyer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Despite three decades of literature that has explored the gender imbalance of public relations at a professional level, there is a dearth of information addressing if or how these experiences are informed at a collegiate level. Accordingly, this study examines if the gender imbalance impacts students in the upper-level public relations classroom, and the similarities and differences exist between other single-gender dominant programs including nursing and Science, Technology, Engineering, and Mathematics (STEM) using three dimensions (i.e., role strain, teamwork, and overall social environment) as a comparison. Using qualitative in-depth interview data collected from 13 junior- and senior-standing public relations students …

Respectable Women, Ambitious Men: Gender And Family Networks In Victorian Sheffield, Autumn Mayle

Graduate Theses, Dissertations, and Problem Reports (ETD)

“Respectable Women, Ambitious Men: Gender and Family Networks in Victorian Sheffield” offers a family study of Nonconformist manufacturers in nineteenth-century Sheffield through several thematic case studies on such subjects as gender, family networks and businesses, bankruptcy, piety, and charitable work. This project focuses on the Reads, a family of middle-class Congregationalist smelters who owned a smelting works, named Read & Co., in nineteenth-century Sheffield. The Reads’ experiences contribute to recent scholarship on gender and kinship studies by addressing the role of nineteenth-century conceptions of masculinity and femininity on family, charity, and business and the enduring influence of nuclear families and …

Becoming The Lion's Historian, Khadija-Awa Diop

Graduate Theses, Dissertations, and Problem Reports (ETD)

This professional project examines the ways in which French colonial documentaries were used in conjunction with governmental legislation to enforce dominant narratives and repress marginalized perspectives about the nature of colonialism and the roles of the French and West Africans in its execution. Through the limitations and powers of documentary filmmaking, this project explores the ways in which counter narratives can allow media professionals today to remedy the one sided dominant narratives about marginalized communities that have existed for decades. The culmination of this project is in the creation of a documentary treatment and sizzle reel that will be the …

Oxygen Transport Kinetics Of Surface Modified Mixed Conductor (La0.60sr0.40)0.95co0.20fe0.80o3-X As Solid Oxide Fuel Cell Cathode, Manuel Serrano Laguna

Graduate Theses, Dissertations, and Problem Reports (ETD)

The oxygen transport kinetics of the electrodes of Solid Oxide Fuel Cells (SOFC) are critical properties to achieve higher efficiencies in the cell. (La0.60Sr0.40)0.95Co0.20Fe0.80O3-x (LSCF) is a mixed ion-electron conductor material that is expected to be optimized and utilized as the cathode of the SOFC’s. The reason for LSCF to be considered as the next cathode material for SOFC is due to its high ionic and electronic conductivities, and high oxygen transport kinetics. Additionally, to the excellent properties that this material offers, it has been seen that the kinetic properties of the material can be further optimized by adding a …

Monotonic Response Of Rc Exterior Beam-Column Joints Reinforced With Filler-Modules And Frp Composite Wraps/Gussets, Praveen Kumar Reddy Majjigapu

Graduate Theses, Dissertations, and Problem Reports (ETD)

A review of post-earthquake reconnaissance studies revealed that reinforced concrete (RC) structures, designed and built before the development of Uniform Building Code (UBC) seismic design guidelines in 1976, have suffered complete collapse or severe damages due to the brittle failure of exterior beam-column joints. Over the past 50 years, several studies were conducted to strengthen exterior joints of in-service structures, with limited emphasis on developing simple, economic and durable repair strategies to improve energy absorption through large inelastic joint deformations. Even less emphasis was devoted to developing repair procedures that minimize stress-concentrations at joint corners and enhancing the strength, ductility, …

Accuracy Of Blx And Blt Guided Implants In The Edentulous Maxilla: An In Vivo Study, Benjamin Andrew Kordusky

Graduate Theses, Dissertations, and Problem Reports (ETD)

Objectives: To determine the accuracy of dental implants placed using a dual scan CBCT protocol with a SLA 3D printed mucosa supported surgical guide using a flapless surgical approach with regard to sleeve position, type of implant, and regional location in the maxillary arch.

Methods: Nine patients received 4 dental implants utilizing a fully guided, flapless approach with a mucosa supported SLA surgical guide with 3 fixation pins. Implants were immediately loaded using an attachment placed in an existing Maxillary complete denture. Accuracy of implant positions were evaluated by the Treatment Evaluation module of coDiagnostiX (DentalWings, Montreal, Canada). Statistical analysis …

Collaborative Entrepreneurship And Building Small Business Communities In The Nigerian Fashion Design Industry, Damilola T. Fasinu

Graduate Theses, Dissertations, and Problem Reports (ETD)

A critical part of being an entrepreneur is the ability to work with others. Researchers who explore entrepreneurship acknowledge collaboration and information sharing as key as more obvious skills such as opportunity recognition and determination. Collaboration allows a firm to be entrepreneurial and constantly innovative by exploring new markets. Continuous innovation and market exploration are the foundation of collaboration. Entrepreneurship is a critical factor in the growth of developing countries, as it enables a country to grow economically and encourages sustainable business activity. Therefore, this study explores the collaborative entrepreneurship of communities of some small businesses in Nigeria for their …

Disturbance Related To Unconventional Oil And Gas Development In The Appalachian Basin, Kevin Jordan Harris

Graduate Theses, Dissertations, and Problem Reports (ETD)

Little research has been done on the land cover change of unconventional oil and gas (UOG) wells across the Appalachian basin. In the last decade, UOG development has increased drastically across the region. Permitted well data from 2007 to 2017 were assembled into a geospatial database and analyzed with current aerial imagery to determine the activity of permitted wells in Ohio, Pennsylvania, and West Virginia. To capture all disturbance related to UOG development, a 25-hectare buffer was placed around each active well as the study extent. A supervised classification approach was used to determine the pre-development and post-development landcover across …

Searches For Fast Radio Bursts, Golnoosh Golpayegani

Graduate Theses, Dissertations, and Problem Reports (ETD)

Following the discovery of fast radio bursts (FRBs) in 2007, astronomers have entered a new era in astronomy in which understanding the nature of these type of radio transients is one of the most important modern astronomy questions. In this thesis I detail our current state of knowledge in this rapidly evolving field and describe real-time search systems designed to find FRBs using the 20-meter radio telescope at the Green Bank Observatory and the Arecibo L-band Feed Array (ALFA) receiver of the Arecibo 300-meter telescope in Puerto Rico. These experiments are called GBTrans and ALFABURST, respectively.

I give details of …

Addiction Or Disorder? Using The Bias Map Model To Explain The Stigmatizing Effects Of News Media Labels For Opioid Use Disorder, Kylie J. Wilson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The stigma surrounding opioid use disorder is often reinforced by the language that the general public and institutions use to talk about people with the disorder. Consistent with labeling theory, contending that labels are vehicles for social categorization and stereotypes, triggering bias, (e.g., Ashford, Brown, Ashford, & Curtis, 2019; Corrigan, Kuwabara, & O’Shaughnessy, 2009; Goodyear, Haass-Koffler, & Chavanne, 2018; Link & Phelan, 1999) but the ingroup based cognitive and emotional process through which these affect public stigma has not been explored in detail. This dissertation employs the Stereotype Content Model (SCM) and the Behaviors from Intergroup Affect Stereotypes (BIAS) Map …

Validation Of Fast Spectrochemical Screening Methods For The Identification Of Counterfeit Pharmaceutical Packaging, Emily Ann Haase

Graduate Theses, Dissertations, and Problem Reports (ETD)

Counterfeit pharmaceuticals are an actively developing health and economic threat worldwide. Particularly prevalent are counterfeit pharmaceuticals distributed in emerging nations and through internet pharmacies or e-pharmacies. Although technology has been developed that discourages anti-counterfeiting practices (such as optically variable devices, invisible ink, and track-and-trace technology), it remains somewhat novel and expensive to implement on a widespread scale.

In this study, Laser Induced Breakdown Spectroscopy (LIBS) and Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR) were proposed as fast and non-invasive tools for the identification of counterfeit pharmaceutical packages. The main objective of this research was to develop and evaluate the capabilities …

Comparative Study Of The Fife And Drum Blues Traditions Of Othar Turner And The Preservation, Development, And Innovation Of Sharde Thomas And The Rising Stars Fife And Drum Band, Donnie Ryan Jobe

Graduate Theses, Dissertations, and Problem Reports (ETD)

Othar Turner held the Fife and Drum Blues traditions of North Mississippi for decades. Since his passing in 2003, his granddaughter Sharde Thomas has taken over as the keeper of these traditions. The musical characteristics of Othar are still present in Sharde’s music today, however her interpretations have shaped these current traditions. This research discusses heritage and folklore theories of scholars Rodney Harrison, Martha Sims, and Martine Stephens as a lens to evaluate Sharde’s musical interpretations and compares them to Othar’s last recordings before his passing. This document provides a model for how these musical characteristics and interpretations relate and …

A Multifaceted Performance Model For The Multiple Percussion Performance Practice: Performance Analysis Of Select Works Toward Developing A Graduate Curriculum, Mitchell Joseph Greco

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this document is to articulate the various dimensions of the solo multiple percussion performance practice, the primary objective being to construct appropriate graduate curricula. It was found that the necessary skills and concepts could be categorized into four dimensions that make up the multi-faceted model: (1) equipment and setup, (2) notational style, (3) technical demands, and (4) conceptual performance. Requisite skills were posited from performance analyses of over fifty solo works that range from intermediate to advanced difficulty. Representative works are described that might effectively introduce and challenge these requisite skills and concepts, as are exemplary pieces …

Galvanizing Germantown: The Politicization Of Louisville's German Community, 1848-1855, Ann Kathryn Fleming

Graduate Theses, Dissertations, and Problem Reports (ETD)

This project interprets the Revolutions of 1848 and their ideological legacy through a transnational and transcultural context, highlighting the role of radical forty-eighters who imparted their republican messages to “Little Germanies” within the United States. Karl Heinzen serves as the primary example of the transient group that shared their radical visions with local German communities populated with political and cultural organizations, an active press and a commitment to civic engagement demonstrated through their involvement anti-slavery groups, labor reform, and improved rights for the immigrant population.

The thesis traces the politicization of Karl Heinzen in the German Confederation and his involvement …

Top-Down Model Development Using Data Generated From A Complex Numerical Reservoir Simulation With Water Injection, Yvon Andrea Martinez

Graduate Theses, Dissertations, and Problem Reports (ETD)

Numerical simulation and data-driven modeling are two current approaches in engineering reservoir modeling. Numerical reservoir simulation attempts to match past production history by modifying reservoir properties of the model. After multiple computationally intensive trial and error efforts, accurate history matches are identified. These history matches are used by project management for production forecasting purposes. Data-driven reservoir modeling utilizes measured data and is, therefore, free of assumptions that are often included in numerical reservoir simulations. Artificial intelligence and machine learning algorithms are technologies implemented in the development of a data-driven reservoir model with efforts to learn fluid flow through porous media …

Reservoir Characterization And Static Earth Modeling For Potential Co2 Storage In Upper Pennsylvanian Cyclothems Of Midcontinent, Usa, Valerie Lynn Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation details the estimation of CO₂ storage volume using reservoir characterization and the building of static earth models in two papers: 1) for Sleepy Hollow Field in Red Willow County, Nebraska and, 2) for Huffstutter Field, Phillips County, Kansas. These models are used to obtain estimates of CO₂ storage capacity in stacked carbonate intervals of the Pennsylvanian Lansing and Kansas City groups (LKC). The LKC constitutes a regional succession of interbedded carbonates and shales. Located over the Cambridge Arch of Nebraska, these interbedded units were evaluated for carbon storage potential. Understanding the occurrence of carbonate porosity among …

Frontal Brain Injury: Effects On Flexibility, Impulse Control, And Attention, Christopher Matthew O'Hearn

Graduate Theses, Dissertations, and Problem Reports (ETD)

Traumatic Brain Injury (TBI) is defined as an impact to the head, penetration of the skull, or rapid deceleration of the skull, resulting in an alteration of brain function or neurological deficit. Cognitive deficits are common following TBI and often go unresolved due to a lack of effective treatments. These deficits often perseverate into the chronic post injury phase, so the development of rehabilitative strategies is imperative. Behavioral flexibility, impulse control, and attention are a few cognitive processes that are commonly affected by TBI. The current research compares these processes between rats with and without a severe frontal brain injury …

“I Don't Really Look Very Asian”: Transracially And Transnationally Adopted Asian Youth In Rural Appalachia, Sandra L. Rodeheaver

Graduate Theses, Dissertations, and Problem Reports (ETD)

Transracially adopted Asian children in rural Appalachia find themselves adopted into places where there is little or no racial and ethnic diversity. In this context, it may be difficult to transgress the model minority stereotype and systemic racism in schools and the community. There are particular issues and concerns related to racial identity for TRAAs that may make the task of becoming fully integrated members of the community challenging. Building on the literature on transracial and transnational adoption, this study aims to better understand the lives and perspectives of two transracially adopted Asian (TRAA) girls living in rural Appalachia and …

Occurrence, Mating Strategy, And Pathogenicity Of Members Of Nectriaceae In Central Appalachia, Cameron Michael Stauder

Graduate Theses, Dissertations, and Problem Reports (ETD)

Members of the Nectriaceae occupy many ecological niches including dominant canker pathogens, such as Neonectria ditissima and N. faginata. These two pathogens contribute to the decline of American beech (Fagus grandifolia) forests across the Appalachian Mountains due to beech bark disease (BBD). Interestingly, N. ditissima represents a well-known canker pathogen many hardwood species, while N. faginata has not been observed outside of BBD. Additionally, N. faginata occurs at higher incidences than N. ditissima in BBD stands. Nectriaceae in Central Appalachia were surveyed as to further characterize the diversity and possibly identify a non-beech host of N. faginata. …

Tree Growth And Water Use Efficiency During The Twentieth Century: From Global Trends To Local Drivers, Justin Michael Mathias

Graduate Theses, Dissertations, and Problem Reports (ETD)

The frequency and severity of extreme environmental conditions will continue to increase under global environmental change. How terrestrial plants respond to prolonged, and often novel environmental stressors, will have profound impacts on, and feedbacks with, the Earth climate system at local to continental scales. Central to these feedbacks are plant stomata, actively regulated pores on the leaves of plants that act as a control valve over the fluxes of carbon dioxide (CO₂) into the leaf during photosynthesis and water vapor (H₂O) out of the leaf during transpiration. Importantly, changes in stomatal aperture do not affect the …

Reducing Gaps In Knowledge About Electroconvulsive Therapy Among Mental Health Nurses, Janice L. Edmonson

Electronic Theses and Dissertations

This DNP study was conducted to identify knowledge gaps about electroconvulsive therapy (ECT) among mental health nurses and to determine the effectiveness of an educational intervention on the knowledge and attitude of mental health nurses about the use of ECT at a psychiatric hospital. In this study, the researcher sought to build upon an existing knowledge base using principles of adult learning theory to enhance the therapeutic relationship of the nursing staff when caring for ECT patients. A sample of three-quarters (N = 119) of the mental health nursing staff employed by the psychiatric hospital consented to participate in …

Review Of: Jacques B. Doukhan, Daniel 11 Decoded: An Exegetical, Historical, And Theological Study, Roy E. Gane

Faculty Publications

No abstract provided.

Improvement Of Tcad Augmented Machine Learning Using Autoencoder For Semiconductor Variation Identification And Inverse Design, Kashyap Mehta, Sophia Susan Raju, Ming Xiao, Boyan Wang, Yuhao Zhang, Hiu Yung Wong

Faculty Research, Scholarly, and Creative Activity

A machine learning (ML) model by combing two autoencoders and one linear regression model is proposed to avoid overfitting and to improve the accuracy of Technology Computer-Aided Design (TCAD)-augmented ML for semiconductor structural variation identification and inverse design, without using domain expertise. TCAD-augmented ML utilizes TCAD simulations to generate sufficient data for ML model development when experimental data are inadequate. The ML model can then be used to identify semiconductor structural variation for given experimental electrical measurements. In this study, the variation of layer thicknesses in the p-i-n diode is used as a demonstration. An ML model is developed to …

Energy Filtering Effect At Source Contact On Ultra-Scaled Mosfets, Johan Saltin, Nguyen Cong Dao, Philip H.W. Leong, Hiu Yung Wong

Faculty Research, Scholarly, and Creative Activity

We postulate that in ultra-scaled Field Effect Transistors (FET), such as nanowires in sub-7nm technology, the source contact will act as an energy filter and increase the effective temperature of carriers arriving at the channel barrier. This is due to the absence of inelastic scattering in the short source-contact-to-channel region. As a result, the Sub-threshold Slope (SS) will increase substantially. In this paper, we verify this energy filtering effect through numerical calculations and Technology Computer-Aided-Design (TCAD) simulations calibrated to quantum solvers for electrostatics. It is found that SS degradation increases as the source metal workfunction increases. At 300K, in the …

Spatial Particulate Fields During Highwinds In The Imperial Valley, California, Frank R. Freedman, Paul English, Jeff Wagner, Yang Liu, Akula Venkatram, Daniel Q. Tong, Mohammad Z. Al-Hamdan, Meytar Sorek-Hamer, Robert Chatfield, Ana Rivera, Patrick L. Kinney

Faculty Research, Scholarly, and Creative Activity

We examined windblown dust within the Imperial Valley (CA) during strong springtime west-southwesterly (WSW) wind events. Analysis of routine agency meteorological and ambient particulate matter (PM) measurements identified 165 high WSW wind events between March and June 2013 to 2019. The PM concentrations over these days are higher at northern valley monitoring sites, with daily PM mass concentration of particles less than 10 micrometers aerodynamic diameter (PM10) at these sites commonly greater than 100 μg/m3 and reaching around 400 μg/m3, and daily PM mass concentration of particles less than 2.5 micrometers aerodynamic diameter (PM2.5) commonly greater than 20 μg/m3 and …

The Assembly History Of The Nearest S0 Galaxy Ngc 3115 From Its Kinematics Out To Six Half-Light Radii, Arianna Dolfi, Duncan A. Forbes, Warrick J. Couch, Anna Ferre-Mateu, Sabine Bellstedt, Kenji Bekki, Jonathan Diaz, Aaron J. Romanowsky, Jean P. Brodie

Faculty Research, Scholarly, and Creative Activity

Using new and archival data, we study the kinematic properties of the nearest field S0 galaxy, NGC 3115, out to ∼6.5 half-light radii (Re) from its stars (integrated starlight), globular clusters (GCs), and planetary nebulae (PNe). We find evidence of three kinematic regions with an inner transition at ∼0.2 Re from a dispersion-dominated bulge (Vrot/σ < 1) to a fast-rotating disc (Vrot/σ > 1), and then an additional transition from the disc to a slowly rotating spheroid at ∼ 2-2.5Re, as traced by the red GCs and PNe (and possibly by the blue GCs beyond ∼ 5Re). From comparison with simulations, we propose an assembly history in which …