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open access

A Review of Diagnostics Methodologies for Metal Additive Manufacturing Processes and Products

Description: This article is a review summarizing and discussing various ex-situ inspections and in-situ monitoring methods, including electron-based methods, thermal methods, acoustic methods, laser breakdown, and mechanical methods, for metal additive manufacturing.
Date: August 30, 2021
Creator: Yang, Teng; Mazumder, Sangram; Jin, Yuqi; Squires, Brian; Sofield, Matthew; Pantawane, Mangesh V. et al.
Partner: University of North Texas

[Eagle Landing Dining Hall Grand opening and ribbon-cutting ceremony (2 of 2)]

Description: Photograph of eleven individuals wearing face masks (except for UNT President Neal Smatresk) and standing in front of the doorway of Eagle Landing, a newly opened UNT Dining Hall. One man with scissors is cutting into a large green ribbon flanked by green, white, and silver balloons. A group of people sitting in rows of black chairs are facing the ribbon-cutting. One person lifts a smartphone to take a picture. Also visible in the photograph is a podium with the UNT name and logo.
Date: August 23, 2021
Creator: Crutsinger, Caether
Partner: UNT Libraries Special Collections

[Eagle Landing Grand opening and ribbon-cutting ceremony (1 of 2)]

Description: Photograph of eleven individuals wearing face masks and standing in front of the doorway of Eagle Landing, a newly opened UNT Dining Hall. One man with scissors is cutting into a large green ribbon flanked by green, white and silver balloons. A group of people sitting in rows of black chairs are facing the ribbon-cutting. One person lifts up a smartphone to take a picture. Also visible in the photograph is a podium with the UNT name and logo.
Date: August 23, 2021
Creator: Crutsinger, Caether
Partner: UNT Libraries Special Collections
open access

Dense Locally Finite Subgroups of Automorphism Groups of Ultraextensive Spaces

Description: Article verifying a conjecture of Vershik by showing that Hall’s universal countable locally finite group can be embedded as a dense subgroup in the isometry group of the Urysohn space and in the automorphism group of the random graph. It shows the same for all automorphism groups of known infinite ultraextensive spaces.
Date: May 4, 2020
Creator: Etedadialiabadi, Mahmood; Gao, Su; Le Maître, François & Melleray, Julien
Partner: UNT College of Science
open access

Phylogenetic Occurrence of the Phenylpropanoid Pathway and Lignin Biosynthesis in Plants

Description: This article is a review summarizing recent progress in defining the lignin biosynthetic pathway in lycophytes, monilophytes, gymnosperms, and angiosperms. This review provides new insights into the genetic engineering of the lignin biosynthetic pathway to overcome biomass recalcitrance in bioenergy crops.
Date: August 17, 2021
Creator: Yao, Tao; Feng, Kai; Xie, Meng; Barros, Jaime; Tschaplinski, Timothy J.; Tuskan, Gerald et al.
Partner: UNT College of Science
open access

Development of Novel Approaches to Earth-abundant Methane Catalysis

Description: Research on catalytic cycles for C–H activation and functionalization of light alkanes based on the CMD (concerted metalation deprotonation) mechanism will be modeled for Earth-abundant metal dicarboxylates and related complexes. The impact of inner and outer coordination sphere effects upon catalytic cycles for light alkane functionalization will be assessed using computational chemistry techniques. The aforementioned studies will be leveraged to identify promising, synthetically feasible lead catalysts for experimental collaborators.
Date: 2021-08-15/2024-08-14
Creator: Cundari, Thomas R., 1964-
Partner: UNT College of Science
open access

Estimating potential range shift of some wild bees in response to climate change scenarios in northwestern regions of Iran

Description: Article investigating the impact of climate change on distributional and habitat quality changes of five wild bees in northwestern regions of Iran under two representative concentration pathway scenarios (RCP 4.5 and RCP 8.5). This study uses species distribution models to predict the potential range shift of these species in the year 2070.
Date: August 14, 2021
Creator: Rahimi, Ehsan; Barghjelveh, Shahindokht & Dong, Pinliang
Partner: UNT College of Liberal Arts & Social Sciences
open access

A smartphone-based online system for fall detection with alert notifications and contextual information of real-life falls

Description: This article presents the results of a prospective study investigating a proof-of-concept, smartphone-based, online system for fall detection and notification. Apart from functioning as a practical fall monitoring instrument, this system may serve as a valuable research tool, enable future studies to scale their ability to capture fall-related data, and help researchers and clinicians to investigate real-falls.
Date: August 10, 2021
Creator: Harari, Yaar; Shawen, Nicholas; Mummidisetty, Chaithanya K.; Albert, Mark & Kording, Konrad P.
Partner: UNT College of Engineering
open access

Accumulator, Transporter, Substrate, and Reactor: Multidimensional Perspectives and Approaches to the Study of Bark

Description: This article is a short review that explores different perspectives and approaches to the study of bark and what they reveal about the myriad ways bark surfaces influence the quality of sub-canopy precipitation.
Date: August 5, 2021
Creator: Ponette-González, Alexandra G.
Partner: UNT College of Liberal Arts & Social Sciences
open access

FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming

Description: Research aiming to develop the next generation of wireless power transfer (WPT) network that is scalable, safe, and efficient and can be deployed in a UAS by incorporating waveform engineering, electromechanical beamforming, integrated phased-array antenna, and transmitter (TX)/receiver (RX) co-design. This project aims to reveal the fundamental understanding of the energy sphere formation in a 3D space using UAVs as a case study. Although interests in radiative (far-field) WPT using beamforming has been growing rapidly because of its capability to energize a large number of autonomous devices, most of these works are still in the theoretical phase without any practical implementation. This project aims to implement a robust beamforming network using a bottom-up approach (from the antenna to the inter-connected network) that is highly important for addressing the challenges associated with a dynamically changing environment.
Date: 2021-08-02/2023-08-01
Creator: Mahbub, Ifana
Partner: UNT College of Engineering

[UNT Libraries Dean Diane Bruxvoort at Willis Library's first day back for library employees]

Description: Photograph of UNT Libraries Dean Diane Bruxvoort standing behind two tables. The tables hold boxes of pastries, bottled beverages, coffee dispensers, napkins, and straws. Dean Bruxvoort is wearing a burgundy dress and smiling at the camera. The interior of the first floor of Willis Library is visible behind the Dean, which includes the library's chairs and tables.
Date: August 2, 2021
Creator: Esparza, Anna
Partner: UNT Libraries Special Collections
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. Focusing on Schloss's First Chinese Rhapsody, the dissertation explores how Schloss links the new to the old, the West to the East, through an analysis of the way he employs Chinese folk song material and serial polyphonic voice-leading in his post-tonal musical language. Since the Rhapsody has both serial and polyphonic voice-leading aspects, both are analyzed, showing how they are integrated in the form.
Date: August 2021
Creator: Cai, Ying
Partner: UNT Libraries

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 multiple chromosomes. In addition, we performed functional genomic analysis to garner support for our findings from comparative evolutionary analysis. We found genes such as those encoding conserved hypothetical protein DR_A0179 and hypothetical protein DR_A0109 in Deinococcus radiodurans R1, and Putative phage phi-C31 gp36 major capsid-like protein and hypothetical protein RSP_3729 in Rhodobacter sphaeroides 2.4.1, which are located on accessory chromosomes in both bacteria and were not found in the inferred ancestral sequences, and on the primary chromosomes, as well as were not found in their closest relatives with single chromosome within the same clade. These genes emphasize the important potential roles of the secondary chromosomes in helping multipartite bacteria to adapt to specialized environments or conditions. In addition, we applied machine learning algorithms to predict multipartite genomes based on gene content of multipartite genomes and their unipartite relatives, and leveraged this to identify genes that are deemed important by machine learning in discriminating between multipartite and unipartite genomes. This approach led to the identification of marker genes that could be used in discriminating between bacteria with multipartite genomes and. bacteria with single chromosome genomes Furthermore, we examined modules in gene co-expression networks of multipartite Rhodobacter sphaeroides 2.4.1 and its close unipartite relative Rhodobacter capsulatus SB 1003 that were enriched in genes differentially expressing under stressful conditions representing different experiments. This led to the identification of 6 modules in the Rhodobacter …
This item is restricted from view until September 1, 2023.
Date: August 2021
Creator: Almalki, Fatemah M
Partner: UNT Libraries
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 blubber percent lipid. Correlations between contaminant concentrations and expression levels of relevant biomarkers were seen potentially indicating an effect on multiple pathways. Overall risk can be hard to determine due to factors such as sex and age. Broad threshold response values and hazard quotients were calculated for toxic effect endpoints in pinnipeds. Overall these results suggest that certain populations of pinnipeds are at high risk of experiencing toxic effects due to POP exposure, but it is important to understand effects even at lower concentrations. The relationship between exposure, toxic effects, and other stressors, both environmental and physiological, can impact the overall fitness and survival of pinnipeds.
Date: August 2021
Creator: Soulen, Brianne K
Partner: UNT Libraries
open access

Apprenticeship to Signs in Art Education

Description: This research looks thoughtfully and deeply at the relationship between art education and signs, as defined by the French philosopher Gilles Deleuze (1964/1998). Signs, as articulated by Deleuze (1964/1998), are violent disruptions to our way of understanding the world, causing us to think again and/or re-consider what we once knew (or thought we knew). This study looks generatively at how these kinds of disruptive and disorienting moments might be mined for possibilities in art education and remind us of our own relationality. As a post-qualitative lived inquiry, it asks how might art education be-with apprenticeship to signs and what might art education do-with sign-encounters? Using the theoretical lens of transcendental empiricism and new materialism, this study considers how art educators might hold open the space of sign-encounters for oneself and one's students by turning towards the rhizomatic cut and staying with uncertainty. It is focused on the doing-with, making-with, and thinking-with of art, pedagogy, and philosophy/theory, investigating their deep entanglements in spaces of disruption and ultimately developing frame-works for engaging in this kind of work in the classroom. Drawing from Erin Manning and Brian Massumi's theory of research-creation, this research was experienced in an emergent, layered, and complex way over the last two years, including the construction of this dissertation presented as an assemblage all of its own.
Date: August 2021
Creator: Wurtzel, Kate Lena
Partner: UNT Libraries
open access

Artificial Intelligence Teammates in a Collaborative Information Seeking Environment from the Perspective of Women Engineers in the United States

Description: The purpose of this study was to collect design requirements from women engineers on artificial intelligence teammates such as Microsoft Teams, Slack, and Trello. A mixed methods research design was used for this study with an online survey and semi-structure interviews. The study results revealed design requirements from women engineers including solutions to sociotechnical issues that could arise from artificial intelligence teammates in the workplace. The results showed various ways women engineers collaborate in the workplace with and without artificial intelligence. Additionally, women engineers' attitude towards artificial intelligence was examined to identify if there was a correlation to self-efficacy. This research study fills a previous study gap that solicited design requirements from research scientists, by soliciting practitioners. Practitioners such as women engineers are underrepresented in the workplace, and they could benefit from an artificial intelligence teammate with their design requirements. Finally, this study contributes to the information science literature on collaborative information seeking, artificial intelligence design, and engineers' information seeking behaviors.
Date: August 2021
Creator: Floyd, Schenita A
Partner: UNT Libraries
open access

The Artistic Image in "Twelve Children's Pieces of Medium Difficulty," Op. 31 by Reinhold Gliere (1875–1956)

Description: In his Art of Piano Playing, the renowned Russian pianist and teacher Heinrich Neuhaus asserts that the concept of an "artistic image" can give musical meaning to the score, help pianists to understand the musical content of a composition, and help students to find pianistic expression in the details. The concept of artistic image can be applied in pedagogy, guiding young pianists to learn content and organize their practice. The artistic image is the picture of a musical idea and the musical language, which comes from melody, phrasing, musical structure, and the emotional and poetic content. Twelve Children's Pieces of Medium Difficulty, Op. 31, is one of the important works for young pianists by Reinhold Glière (1875–1956). The set has emotional characteristics that allow intermediate young pianists to grasp its rich content and then develop technically. His piano works have been little studied by scholars as part of a pedagogical approach. This pedagogical guide uses the concept of artistic image in Glière's work to help young pianists, or their teachers, prepare this work thoroughly and perform it successfully on the stage.
Date: August 2021
Creator: Wu, Yuan Nessa
Partner: UNT Libraries
open access

The Association between Sleep Patterns and Singing Voice Quality during the COVID-19 Pandemic

Description: This study investigated the associations between sleep patterns and singing voice quality in 231 adult singers of various skill levels across the United States. The four-part survey using a general questionnaire on demographics, musical background, vocal health, and three established survey instruments: the Pittsburgh Sleep Quality Index (PSQI), the Singing Voice Handicap Index-10 (SVHI-10), and the Epworth Sleepiness Scale (ESS) found that while scores were worse than normative values for the PSQI and the SVHI-10, a Pearson correlation between the two showed a moderate association. A linear regression also yielded that 8.9% of the variance in SVHI-10 scores could be predicted from PSQI scores. While further research is needed in this area, this study suggests that the amount of sleep needed for an optimal singing voice may be different from the amount needed to feel well-rested for some singers. Moreover, singers may overestimate the influence of sleep on their singing voices.
Date: August 2021
Creator: Simmons, Erica Vernice
Partner: UNT Libraries
open access

Asynchronous Level Crossing ADC for Biomedical Recording Applications

Description: This thesis focuses on the recording challenges faced in biomedical systems. More specifically, the challenges in neural signal recording are explored. Instead of the typical synchronous ADC system, a level crossing ADC is detailed as it has gained recent interest for low-power biomedical systems. These systems take advantage of the time-sparse nature of the signals found in this application. A 10-bit design is presented to help capture the lower amplitude action potentials (APs) in neural signals. The design also achieves a full-scale bandwidth of 1.2 kHz, an ENOB of 9.81, a power consumption of 13.5 microwatts, operating at a supply voltage of 1.8 V. This design was simulated in Cadence using 180 nm CMOS technology.
Date: August 2021
Creator: Pae, Kieren
Partner: UNT Libraries
open access

Attachment to God: Pathways to Resilience and Posttraumatic Growth

Description: Having a secure attachment to God may act as a buffer against stress. Secure attachment to God has been positively associated with adaptive outcomes following stress, such as higher levels of stress-related growth and fewer maladaptive symptoms including depression, prolonged grief, and traumatic distress. However, relatively few studies have empirically tested the relationship between attachment to God and resilience and posttraumatic growth. Thus, the current study explored the potential associations and pathways through which attachment to God is associated with resilience and posttraumatic growth in a sample of 303 suddenly and/or traumatically bereaved individuals. The current study found that (a) God attachment avoidance is a unique negative predictor of resilience and posttraumatic growth even when controlling for adult attachment, (b) self-compassion and meaning-making mediate the association between God attachment anxiety and resilience/posttraumatic growth, (c) secure attachment to God is associated with higher levels of resilience than insecure attachment styles, but not with posttraumatic growth, and (d) an increased number of secondary losses is associated with lower levels of resilience. I conclude by discussing my findings in light of the extant literature on attachment to God, resilience, and posttraumatic growth. By better understanding attachment to God and how it may relate to resilience and posttraumatic growth, clinicians will be better equipped to interact with clients of diverse religious/spiritual (R/S) identities, potentially utilizing R/S as a strength or addressing maladaptive aspects of R/S in the wake of life stressors.
Date: August 2021
Creator: Ellis, Heidi Marie
Partner: UNT Libraries
open access

"Bad Paper"

Description: Bad Paper follows the lives of former military service members, who have received an other-than-honorable discharge, but also have service-connected post traumatic stress disorder (PTSD). Due to the "suck it up" culture of the military, many of these veterans would not report any psychological troubles in fear of being labeled "weak" and potentially affecting their promotions. With no outlet for their PTSD, drugs and alcohol became a way of "self-medicating," which led to their dismissal from the service. A dishonorable discharge, commonly called "bad paper," from the military disqualifies veterans from receiving help from the VA. The process to overturn this status is arduous and veterans must navigate the bureaucracy of the Veterans Affairs (VA) administration as well as the individual military branches with virtually no help from either.
Date: August 2021
Creator: Beard, Daniel Lee
Partner: UNT Libraries

The Balkan Imbroglio: The Diplomatic, Military, and Political Origins of the Macedonian Campaign of World War I, 1915-1918

Description: The Macedonian Campaign of World War I (October 1915-November 1918) traditionally remains one of the understudied theatres of the historiography of the conflict. Despite its vital importance in the outcome of the war, it is still considered as a mere sideshow compared to the Western Front and the Gallipoli Campaign. This dissertation presents a much-needed re-evaluation of the Macedonian Campaign's diplomatic and political origins within the war's early context. In doing so, this study first concentrates on a longue durée perspective and assesses the main historical events in the Balkans and Central Europe from the end of the French Revolution to World War I. In a perspective running throughout the entire nineteenth century, this dissertation integrates the importance of nascent nationalism in the Balkans and examine the Austro-Hungarian Empire's steady decline and subsequent diplomatic realignment toward the Balkans. Similarly, this work depicts the intense power struggle in Southeastern Europe between some of this story's main protagonists, namely the Austro-Hungarian, Russian and Ottoman Empires. This dissertation also evaluates the rise of new regional powers such as Bulgaria and Serbia and examines their connection to the European balance of power and general diplomatic equilibrium. In the first half of this dissertation, I present an overview of some of the most crucial episodes that paved the way to the onset of World War I and the inception of the Macedonian Campaign: The Russo-Turkish War of 1877-1878, the Congress of Berlin of 1878, The Bosnian Crisis of 1908-1909, the Italo-Ottoman War of 1911-1912, and the Balkan Wars of 1912-1913. In the second part of this study, the main thread of the analysis is the crucial Anglo-French relations that took place between the end of the nineteenth century and World War I. This study describes the importance of Anglo-French relations regarding the Macedonian Campaign's inception …
This item is restricted from view until September 1, 2023.
Date: August 2021
Creator: Broucke, Kevin R
Partner: UNT Libraries
open access

Beethoven's Orchestra at the Romantic Piano: Understanding the Piano Transcriptions of "Marcia alla turca" from Beethoven's The Ruins of Athens by Franz Liszt and Anton Rubinstein

Description: The transcriptions of Franz Liszt (1811-1886) and Anton Rubinstein (1829-1894) on Beethoven's "Marcia alla turca" serve as unique examples within the area of transcription since each of these important virtuosos transcribed the movement with drastically different results. Liszt's Capriccio alla turca (1846) is built on Beethoven's thematic materials although it is presented with a greatly embellished accompaniment providing countermelodies, expanded passages, and vigorous rhythmic features. In contrast, Rubinstein's Turkish March (1848) attempts to capture Beethoven's original (1811) as closely as possible adhering to the form and harmonies. Each composer's approach served to showcase new pianistic innovations capturing orchestral sonorities at the piano previously unimagined. This dissertation offers musical insight for two less well-known works from significant pianist-composers which should receive further attention. Additionally, this research provides greater documentation for the compositions of Rubinstein, supplementing the historical accounts of his abilities as a performer. Examination and comparative analysis of each transcription not only illuminates the creative approaches each composer employed in creating his transcription, but also serves pianists wishing to perform these neglected works.
Date: August 2021
Creator: Yoon, Jeongmi
Partner: UNT Libraries
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