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3D Printing of Zinc Anode for Zinc Ion Batteries

Description: Recently, 3D printing has received increasing attention for the fabrication and assembly of electrodes for batteries due to the freedom of creating structures in any shape or size, porosity, flexibility, stretchability, and chemistry. Particularly, zinc ion batteries (ZIBs) are favored due to high safety, cheap materials cost, and high volumetric capacity (5,849 mAh/cm3), however, rapid evaporation of Zn due to low melting temperature has limited its 3D printability via conventional laser-based… more
Date: December 2021
Creator: Amoko, Stephen Adot Oyo
Item Type: Refine your search to only Thesis or Dissertation
open access

The Abraham Solvation Model Used for Prediction of Solvent-Solute Interactions and New Methods for Updating Parameters

Description: The Abraham solvation model (ABSM) is an experimentally derived predictive model used to help predict various solute properties. This work covers various uses for the ABSM including predicting molar enthalpies of vaporization, predicting solvent coefficients for two new solvents (2,2,5,5-tetramethyloxolane and diethyl carbonate), predicting values for multiple new ionic liquids (ILs). This work also introduces a novel method for updating IL ABSM parameters by updating cation- and anion-specific… more
Date: May 2021
Creator: Churchill, Brittani N.
Item Type: Refine your search to only Thesis or Dissertation

Accommodating People Safety Curriculum for Deaf and Hard of Hearing Students

Description: Children with disabilities are three to four times more likely to be abused than their non-disabled peers due to the impact of challenges related to behavior, cognition, language, social skills, and communication skills. In September of 2018, the Council for Exceptional Children (CEC) specifically noted the need to establish maltreatment prevention and response curricula and promote research and advocacy surrounding maltreatment of children with disabilities. One common curriculum recommended i… more
Date: May 2021
Creator: Johnson, Jennifer A. L.
Item Type: Refine your search to only Thesis or Dissertation
open access

Activating Artistry: Community Engagement Resources and Teaching Artist Strategies for the Bassoonist

Description: This document examines current practices and opportunities in the music performance field related to artistic citizenship, community engagement, and the field of teaching artistry. The relationship of musicians to their audiences and communities has shifted significantly in the twenty-first century, and there is an increasing need to redefine the essential skills of the professional musician. Derived from the field of teaching artistry, the concept of "activating artistry" suggests that our gre… more
Date: May 2021
Creator: Spring, Staci
Item Type: Refine your search to only Thesis or Dissertation
open access

Additive Manufacturing of AZ31B Magnesium Alloy via Friction Stir Deposition

Description: Additive friction stir deposition (AFSD) of AZ31B magnesium alloy was conducted to examine evolution of grain structure, phases, and crystallographic texture. AFSD was carried out using a hollow tool made from tool steel at a constant rotational velocity of 400 rpm on the AZ31B base plate. Bar stock of AZ31B was utilized as a feed material. The linear velocity of the tool was varied in the range of 4.2-6.3 mm/s. The feed rate of the material had to be maintained at a half value compared to the … more
Date: December 2021
Creator: Patil, Shreyash Manojkumar
Item Type: Refine your search to only Thesis or Dissertation
open access

Adoption of Credit-Hour Reductions in Master of Divinity Programs at the Association of Theological Schools Member Institutions: An Event History Analysis

Description: Seminaries in the United States have for more than two centuries sought to equip ministerial leaders for service within the community of faith. And yet these institutions have traditionally been the focus of very little quantitative research. This lack of data is particularly noteworthy given the existential crises many seminaries currently face, especially regarding their flagship Master of Divinity (MDiv) programs. Among seminary leadership, a common response to declining MDiv enrollment has … more
Date: December 2021
Creator: McKanna, Nathan Jay
Item Type: Refine your search to only Thesis or Dissertation

Adult Attachment Anxiety and Relationship Satisfaction: The Role of Dedication and Constraint Commitment

Description: Adult attachment has been found to play an important role for romantic relationship satisfaction. Specifically, the existent literature generally suggests that attachment anxiety is negatively related to relationship satisfaction. However, the underlying mechanism for this link still needs further exploration. The present study examined the direct and indirect effect of attachment anxiety on relationship satisfaction via two distinct relationship commitment variables: constraint commitment and … more
Date: May 2021
Creator: Chao, Wan Ju
Item Type: Refine your search to only Thesis or Dissertation

Advanced Cathodes for High Energy Density Lithium Sulfur Battery

Description: A systematic development of 2D alloy catalyst with synergistic performance of high lithium polysulfide (LiPS) binding energy and efficient Li+ ion/electron conduction is presented. The first section of work found that Li+ ions can flow through the percolated ion transport pathway in polycrystalline MoS2, while Na+ and K+ ions can easily flow through the percolated 1D ion channel near the grain boundaries. An unusually high ionic conductivity of extrinsic Li+, Na+, and K+ ions in 2D MoS2 film ex… more
Date: December 2021
Creator: Bhoyate, Sanket
Item Type: Refine your search to only Thesis or Dissertation

Aerodynamic Optimization of a 2D Airfoil for Rotary-Wing Aircraft at Mars Atmospheric Conditions

Description: The interest toward Mars exploration has been considerably increasing due to also the successful deployment of the Perseverance rover and the continuous tests developed by SpaceX's launch vehicle, Starship. While the Mars 2020 mission is currently in progress, the first controlled flight on another planet have been proven in April 2021 with the vertical take-off and landing of the Ingenuity rotorcraft on Mars. In addition, the rotorcraft Dragonfly is expected to achieve the same endeavor in Tit… more
Date: December 2021
Creator: Saez, Aleandro G.
Item Type: Refine your search to only Thesis or Dissertation
open access

Africana Studies Collection Evaluation Report

Description: This report summarizes an evaluation of the UNT Libraries' Africana Studies collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: October 15, 2021
Creator: Harker, Karen
Item Type: Refine your search to only Report
open access

Air Corridors: Concept, Design, Simulation, and Rules of Engagement

Description: Air corridors are an integral part of the advanced air mobility infrastructure. They are the virtual highways in the sky for transportation of people and cargo in the controlled airspace at an altitude of around 1000 ft. to 2000 ft. above the ground level. This paper presents fundamental insights into the design of air corridors with high operational efficiency as well as zero collisions. It begins with the definitions of air cube, skylane or track, intersection, vertiport, gate, and air corrid… more
Date: December 2021
Creator: Muna, Sabrina Islam
Item Type: Refine your search to only Thesis or Dissertation

Algebraic Trait for Structurally Balanced Property of Node and Its Applications in System Behaviors

Description: This thesis targets at providing an algebraic method to indicate network behaviors. Furthermore, for a signed-average consensus problem of the system behaviors, event-triggering signed-average algorithms are designed to reduce the communication overheads. In Chapter 1, the background is introduced, and the problem is formulated. In Chapter 2, notations and basics of graph theory are presented. It is known that the terminal value of the system state is determined by the initial state, left eigen… more
Date: December 2021
Creator: Du, Wen (Electrical engineering researcher)
Item Type: Refine your search to only Thesis or Dissertation

Alloy Design, Processing and Deformation Behavior of Metastable High Entropy Alloys

Description: This dissertation presents an assortment of research aimed at understanding the composition-dependence of deformation behavior and the response to thermomechanical processing, to enable efficient design and processing of low stacking fault energy (SFE) high entropy alloy (HEAs). The deformation behavior and SFE of four low SFE HEAs were predicted and experimentally verified using electron microscopy and in-situ neutron diffraction. A new approach of employing a minimization function to refine … more
Date: May 2021
Creator: Frank, Michael (Materials science researcher)
Item Type: Refine your search to only Thesis or Dissertation
open access

The Amalgamation of Western and Eastern Influences in Julius Schloss's "First Chinese Rhapsody"

Description: The dissertation seeks to rediscover Julius Schloss, a German Jewish composer victimized by the Nazis. Except for the promising start of his career in his early years, Schloss suffered a hard life as an exiled refugee. However, his unusual experiences inspired him to compose two Chinese Rhapsodies during his last years of exile in Shanghai, in which he synthesized Western composition techniques and Chinese folk materials, amalgamating influences from both Western and Eastern music cultures. Foc… more
Date: August 2021
Creator: Cai, Ying (Pianist)
Item Type: Refine your search to only Thesis or Dissertation

American Women Report World War I: An Anthology of Their Journalism

Description: In the opening decades of the 20th century, war reporting remained one of the most well-guarded, thoroughly male bastions of journalism. However, when war erupted in Europe in August 1914, a Boston woman, Mary Boyle O’Reilly, became one of the first journalists to bring the war to American newspapers. A Saturday Evening Post journalist, Mary Roberts Rinehart, became the first journalist, of any country, of any gender, to visit the trenches. These women were only the first wave of female journal… more
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Date: 2021
Creator: Dubbs, Chris
Item Type: Refine your search to only Book

Analysis of Multipartite Bacterial Genomes Using Alignment-Free and Alignment-Based Pipelines

Description: In this work, we have performed comparative evolutionary analysis, functional genomics analysis, and machine learning analysis to identify the molecular factors that discriminate between multipartite and unipartite bacteria, with the goal to decipher taxon-specific factors and those that are prevalent across the taxa underlying the these traits. We assessed the roles of evolutionary mechanisms, namely, horizontal gene transfer and gene gain, in driving the divergence of bacteria with single and… more
Date: August 2021
Creator: Almalki, Fatemah
Item Type: Refine your search to only Thesis or Dissertation
open access

Analysis of the Accumulation, Toxic Effects, and Risk of Persistent Organic Pollutants in Pinnipeds

Description: The present studies determine the accumulation of persistent organic pollutants (POPs) in three pinniped species, evaluate the relationship with relevant biomarkers of exposure, and calculate toxic effect thresholds. Stranded harp and hooded seals were found to be accumulating PBDEs at levels which could pose a based on threshold levels determined in this study. Northern fur seals are accumulating all three classes of POPs (PCBs, PBDEs, and OCPs) with significant relationships being seen with b… more
Date: August 2021
Creator: Soulen, Brianne K
Item Type: Refine your search to only Thesis or Dissertation

Analysis of the Integration of LEO Satellite Constellations into 5G Networks

Description: Low Earth orbit (LEO) satellite systems have been proposed as a resource for combating the challenges in 5G network coverage and expanding connectivity to a global realm. This research focuses on the current architecture of LEO satellite constellations, with an emphasis on satellite coverage, visibility patterns and coordination schemes. Key-elements of integrating LEO satellites into the eMBB component of 5G are presented and a breakdown of potential link channel characteristics and physical l… more
Date: December 2021
Creator: Cruz Vazquez, Martin
Item Type: Refine your search to only Thesis or Dissertation
open access

Analyzing the Principal Perspective to Lead the Implementation of Learning Technologies in Public Schools: A Multi-Strategy Study

Description: As technologies for learning become increasingly available in K-12 schools, the role and responsibilities of campus principals continue to evolve. Incorporating technologies in schools requires shifts in practices, the development of new skills, and in some cases, changes in the mindset of stakeholders. Schools should be capable of absorbing the knowledge and creating the systemic structures required for the implementation ICTs. The purpose of this study was to research the principals' perspect… more
Date: December 2021
Creator: Orta, Nelson A
Item Type: Refine your search to only Thesis or Dissertation
open access

Annotated Texts of the Languages of the Barak Valley: Thadou, Saihriem, Hrangkhol, Ranglong

Description: This inaugural volume of the CoRSAL Occasional Publications is a collection of traditional and personal texts in Thadou, Saihriem, Hrangkhol, and Ranglong, four languages of the Barak Valley region of Northeast India. The narratives were collected, transcribed, and translated by Dr. Pauthang Haokip, who is an Associate Professor of Linguistics at Jawaharlal Nehru University, Delhi, India and a member of the Thadou community. This text collection includes grammatical analysis presented in the fo… more
Date: 2021
Creator: Haokip, Pauthang; Chelliah, Shobhana Lakshmi; Burke, Mary & Heaton, Marty
Item Type: Refine your search to only Book
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