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372 Matching Results
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GAFA's information infrastructure distribution: Interconnection dynamics in the global North versus global South
This article analyzes public points of interconnection of Google, Amazon, Facebook, and Apple (GAFA) in the global North versus the global South to determine the degree to which their location preferences differ.
Date:
December 14, 2021
Creator:
Rosa, Fernanda R. & Hauge, Janice A.
Object Type:
Article
System:
The UNT Digital Library
Catalog of the Osher Lifelong Learning Institute: Fall 2021
The Osher Lifelong Learning Institute at UNT's course catalog for Fall 2021.
Date:
2021~
Creator:
University of North Texas. Osher Lifelong Learning Institute.
Object Type:
Text
System:
The UNT Digital Library
Object Detection for Aerial View Images: Dataset and Learning Rate
In recent years, deep learning based computer vision technology has developed rapidly. This is not only due to the improvement of computing power, but also due to the emergence of high-quality datasets. The combination of object detectors and drones has great potential in the field of rescue and disaster relief. We created an image dataset specifically for vision applications on drone platforms. The dataset contains 5000 images, and each image is carefully labeled according to the PASCAL VOC standard. This specific dataset will be very important for developing deep learning algorithms for drone applications. In object detection models, loss function plays a vital role. Considering the uneven distribution of large and small objects in the dataset, we propose adjustment coefficients based on the frequencies of objects of different sizes to adjust the loss function, and finally improve the accuracy of the model.
Date:
May 2021
Creator:
Qi, Yunlong
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Final Report: National Security Commission on Artificial Intelligence
Final report presenting the National Security Commission for Artificial Intelligence (NSCAI)'s recommendations for winning the AI era. It includes a 16 chapter Main Report and "Blueprints for Action that outline the concrete steps departments and agencies can take to implement NSCAI's recommendations." - Introduction.
Date:
March 1, 2021
Creator:
National Security Commission on Artificial Intelligence (U.S.)
Object Type:
Report
System:
The UNT Digital Library
Ecological determinants of smart home ecosystems: A coopetition framework
Article describing the strategic motivations and critical factors involved in the competition-based evolution of smart home ecosystems from early to growth phases, leading to a decision among the largest competitors to engage in coopetition.
Date:
September 8, 2021
Creator:
Struckell, Elisabeth; Ojha, Divesh; Patel, Pankaj C. & Dhir, Amandeep
Object Type:
Article
System:
The UNT Digital Library
Synergistic Effects of Lattice Instability and Chemical Ordering on FCC Based Complex Concentrated Alloys
The current work investigates how the interactions among constituent elements in high entropy alloys or complex concentrated alloys (HEA/CCAs) can lead to lattice instability and local chemical ordering which in turn affects the microstructure and properties of these alloys. Using binary enthalpies of mixing, the degree of ordering in concentrated multi-component solid solutions was successfully tailored by introducing Cr, Al and Ti in a CoFeNi HEA/CCA. CoFeNi was selected as the base alloy to achieve a close to random solid solution as indicated by the near-zero binary enthalpies in CoFeNi alloy system. The room temperature tensile properties of these alloys with varied degree of ordering follow a consistent trend where yield stress increased with degree of ordering. This novel approach provides a new alloy design strategy to obtain controlled ordering tendencies and consequently targeted mechanical properties. Further studies on specific alloys have been conducted to utilize this ordering tendency in attaining precipitation strengthening. For this purpose, Al, Ti and Ni were selected to promote ordering and Co, Fe, and Cr were chosen to strengthen the solid solution matrix. In Al0.25CoFeNi HEA/CCA, the ordering tendency between Al and Ni results in a competition between two long-range ordered phases, L12 and B2. …
Date:
August 2021
Creator:
Dasari, Sriswaroop
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Collective Counterstory of Everyday Racism, Whiteness, and Meritocracy in High School Orchestra
School orchestra programs are overwhelmingly concentrated in suburban districts, which are becoming increasingly racially and economically diverse. Diversifying suburbs lie at the crossroads of race, racism, and whiteness and findings drawn from these settings can have implications for racial dynamics in all educational contexts. The purpose of this instrumental case study was to explore how racially underrepresented students perceive race within an urban characteristic high school orchestra program through the lens of critical race theory. I developed a composite counter-story to examine the racialized experience of school orchestra told from the perspective of students of color with a particular interest on competition. Participants were six students and two teachers affiliated with the same high school orchestra program in Texas. Emergent thematic findings examined students' sense of racial belonging, mechanisms upholding the racial status quo, and fulfilling aspects of students' orchestra participation. Though the lens of critical race theory, I discuss how everyday whiteness, property of whiteness, and meritocracy function to maintain white hegemony in school orchestra.
Date:
August 2021
Creator:
Nussbaum, Kelsey
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Influence of Hypoxia on Acute Lead Toxicity and Calcium Homeostasis in Early Life Stage Zebrafish (Danio rerio)
The purpose of this study was to investigate the effects of Pb and hypoxia co-exposure on Pb toxicity and Ca homeostasis in early life stage (ELS) zebrafish (Danio rerio). Previous evidence indicates that exposure of ELS zebrafish to hypoxia (~20% air saturation) reduces Ca uptake, likely through down-regulation of the apical epithelial Ca channel (ECaC). Considering that Pb and Ca are known antagonists and compete for uptake pathways, it was hypothesized that co-exposure of Pb with hypoxia would decrease Pb toxicity by reducing Pb uptake (likely mediated through a reduced number of ECaCs). However, it was shown that at 96 hpf, whole body accumulation of both Pb and Ca was lower at 40% air saturation compared to 100% and 20% air saturation. This result closely aligned with the 96h LC50 results which showed the highest mortality of zebrafish at 40% compared to the other air saturation levels. This suggests that toxicity is likely the result of exacerbated hypocalcemia at 40% air saturation due to both Pb competition for Ca binding to Ca uptake channels/transporters, such as ECaC, and potentially reduced expression of such channels/transporters in response to this level of hypoxia. Overall, it appears that ELS zebrafish respond differentially to …
Date:
December 2021
Creator:
Moghimi, Mehrnaz
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Biennial Report to the 87th Texas Legislature: Public Utility Commission of Texas
Biennial report to the Texas legislature documenting the work of the Public Utility Commission of Texas, including "the scope of competition reports for the Texas electric and telecommunications markets, as well as a report on water and wastewater regulation" along with an overview of industry issues and recommendations.
Date:
January 2021
Creator:
Texas. Public Utility Commission.
Object Type:
Report
System:
The Portal to Texas History
Freight Forwarder Satisfaction: A Conceptualization and an Empirical Test of Effect on Airport Customer Loyalty and Competitiveness
In 2018, global gross domestic product (GDP) was US$86.3 trillion, and almost a quarter of that value was due to international trade with a value of US$19.6 trillion. Air cargo accounts for about 35 percent of that trade value (approximately US$6.86 trillion). Moreover, from the perspective of the airport sector, air cargo revenue contributes between 20 to 70 percent of airport revenue. The global airport revenue for freight in 2018 was US$250 billion. Despite the interest and research activities surrounding competition and competitiveness of airports and specifically among airlines and passengers, it appears scholars have overlooked research concerning the competitiveness of airports when it comes to air cargo. This study attempts to fill the gap in the supply chain and logistics literature by putting forward a framework and ultimately operationalizing the framework highlighting the pivotal role of air cargo in the supply chain domain and within the global economy. Specifically, the framework is operationalized within the freight forwarding air cargo supply chain domain – providing insight into this important yet understudied phenomenon. The population of interest is freight forwarders from the Dubai International Airport, United Arab Emirates. The Middle East represents 18 percent of the world's air cargo volume and …
Date:
May 2021
Creator:
Almofeez, Sarah Ibraheem
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Acetaldehyde oxidation at elevated pressure
A detailed chemical kinetic model for oxidation of CH3CHO at intermediate to high temperature and elevated pressure has been developed and evaluated by comparing predictions to novel high-pressure flow reactor experiments as well as shock tube ignition delay measurements and jet-stirred reactor data from literature. The flow reactor experiments were conducted with a slightly lean CH3CHO/O2 mixture highly diluted in N2 at 600–900 K and pressures of 25 and 100 bar. This is the accepted manuscript version of the published article.
Date:
April 10, 2021
Creator:
Hashemi, Hamid; Christensen, Jakob M.; Marshall, Paul & Glarborg, Peter
Object Type:
Article
System:
The UNT Digital Library
Adaptation of Fluctuating Magnetoacoustic System to External Signals
Article studying the influence of microwave signals of different shapes on the magnetoacoustic wave system with a giant nonlinearity in canted antiferromagnet FeBO₃ at room temperature, which is close to its phase transition to the paramagnetic state. Results represent the first observation of the macroscopic quantum statistical phenomenon, Bose-Einstein condensation of magnetoacoustic wave quanta in a wave system with a high level of thermal fluctuations.
Date:
June 2, 2021
Creator:
Safonov, Vladimir L.; Bas, Derek A.; Berman, Diana; Rostovtsev, Yuri V.; Roberts, James A.; Mcconney, Michael E. et al.
Object Type:
Article
System:
The UNT Digital Library
Crowdsourcing biocuration: the Community Assessment of Community 1 Annotation with Ontologies (CACAO)
Article describing an approach to expand biocuration through crowdsourcing with undergraduates in the community-oriented wiki framework for GO annotation called the Gene Ontology Normal Usage Tracking System (GONUTS). This multiplies the number of high-quality annotations in international databases, enriches the coverage of the literature on normal gene function, and pushes the field in new directions.
Date:
October 28, 2021
Creator:
Ramsey, Jolene; McIntosh, Brenley; Renfro, Daniel; Aleksander, Susan A.; LaBonte, Sandra; Ross, Curtis et al.
Object Type:
Article
System:
The UNT Digital Library
Doctoral Recital: 2020-02-27 – Melissa Ewing, euphonium
Lecture presented at the UNT College of Music M321 in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
February 27, 2021
Creator:
Ewing, Melissa
Object Type:
Sound
System:
The UNT Digital Library
Doctoral Lecture: 2021-10-14 – Yeo hun Chun, piano
Lecture presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
October 14, 2021
Creator:
Chun, Yeo Hun
Object Type:
Video
System:
The UNT Digital Library
Doctoral Lecture: 2021-03-30 – Min Kyung Kim, piano
Lecture presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
March 30, 2021
Creator:
Kim, Min Kyung, 1983-
Object Type:
Video
System:
The UNT Digital Library
Doctoral Lecture Recital: 2021-05-07 – Seowon Lee, violin
Lecture recital presented at the UNT College of Music Choir Room in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
May 7, 2021
Creator:
Lee, Seowon
Object Type:
Video
System:
The UNT Digital Library
A Study Examining the Financial Conditions and Collaborative Efforts in the Context of Smart Initiatives among Local Government
Local government in the United States have been collaborating across institutional boundaries, collaborating with other local government to share their resources in the delivery of goods and services in their communities. Although local governments have collaborated for a long time, mixed analysis resulted on which form of government is most effective in the delivery of goods and services based on structure and stability of their financial conditions. This dissertation introduces technology as a key component in the collaborative process in implementing smart initiatives among communities. This dissertation uses surveys conducted from ICMA and Smart City Council, 2016, and a case study comparing two smart cities to test the hypotheses; which structure of government is more effective and whether an increase in financial condition encourages more collaborative efforts. The data reveals that the council-manager form of government is more efficient, however, in contrast, to the case study which indicated that both forms of government were efficient in implementing smart initiatives, however, differences in collaborative efforts were seen based on structure. The results of this analysis provide significant new information for both scholars and practitioners.
Date:
August 2021
Creator:
Joseph Stanislaus, Linwyse Donna D
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Performance Guide to "Passacaglia for Solo Violin" (1997) by Byung-dong Paik
Byung-dong Paik is the one of the most famous Korean composers of the twentieth and twenty-first centuries. He has wanted his music to keep up with the times and also incorporate features of Eastern music without catering to the "difficulty" of modern Western music. The Passacaglia for Solo Violin takes a unique modern approach to the Baroque form of passacaglia and its tonal structure by transforming the characteristics of the original theme in a series of seventeen variations and a coda. In this paper, a general analysis of the work leads to suggestions on how to perform it effectively.
Date:
August 2021
Creator:
Lee, Seowon
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Rethinking Tenure: Abolish, strengthen, or replace it?
Access:
Use of this item is restricted to the UNT Community
None
Date:
2021
Creator:
Chronicle of Higher Education, Inc.
Object Type:
Text
System:
The UNT Digital Library
Queerness, Futurity, and Desire in American Literature: Improvising Identity in the Shadow of Empire
This dissertation deploys queer theory and temporality to investigate the ways in which American authors were writing about identity at the turn of the twentieth century. I provide a more expansive use of queer theory, and argue that queerness moves beyond sexual and gender identity to have intersectional implications. This is articulated in the phrase "queer textual libido" which connects queer theory with affect and temporal theories. Queerness reveals itself on both narrative and rhetorical levels, and can be used productively to show the complex navigation between individual and national identity formation.
Date:
May 2021
Creator:
Vastine, Stephanie Lauren
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Where Have All the Cowboys Gone? Creating the Post 9/11 Westerner
The intention of this thesis is to analyze the figure of the post 9/11 Westerner as a modern character created from the preexisting archetype of the classic Westerner. 3:10 to Yuma (dir. James Mangold), The Assassination of Jesse James by the Coward Robert Ford (dir. Andrew Dominik), and There Will Be Blood (dir. Paul Thomas Anderson) were released in 2007 and featured post 9/11 Westerners dealing with issues of fatherhood, demonstrating the prevalence of this figure within the modern western genre. Fatherhood becomes the prism through which these characters are depicted, which becomes the main source of their anxiety. The events of 9/11 contributed to a fracture of the western myth established by the classic postwar western that results in the post 9/11 Westerner attempting to reclaim a similar mythic status. The post 9/11 Westerner becomes an inversion of the classic Westerner seen through his insecure masculinity and ultimate failure to live up to his own imagined ideals.
Date:
August 2021
Creator:
Possoit, Dylan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Identifying the Needs of Precollegiate Anthropology Teachers
Anthropology is an underrepresented subject in precollegiate education. Despite concerted institutional efforts through organizations such as the American Anthropological Association (AAA), there has not been significant growth in the field. Although the field of anthropology has not shown significant growth at the precollegiate level, there does exist a presence of precollegiate anthropology, especially through the International Baccalaureate Organization (IBO) and standalone courses at schools at the elementary through high school level. Many of these standalone courses were created by an individual teacher. This applied thesis used anthropological methods to identify if a social network exists among precollegiate anthropology teachers while also examining how the AAA can create and/or facilitate a stronger community of precollegiate anthropology teachers. Linking to institutions such as the Advanced Placement program in addition to IB may create the critical mass to encourage a positive feedback loop which produces more anthropology students at the college level and more individuals who create standalone courses. With a growth in precollegiate programs, the existing social networks within and outside the AAA will grow.
Date:
August 2021
Creator:
Hoffmann, Michael P
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Relationship of Teacher Attitudes to Levels of Integration in Technology-Rich Learning Environments
This mixed methods study examined teacher attitudes towards technology and their relationship to the integration of technology in technology-rich learning environments.
Date:
December 2021
Creator:
Steiner, Ron
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library