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6,277 Matching Results
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Exploring Physical Unclonable Functions for Efficient Hardware Assisted Security in the IoT
Modern cities are undergoing rapid expansion. The number of connected devices in the networks in and around these cities is increasing every day and will exponentially increase in the next few years. At home, the number of connected devices is also increasing with the introduction of home automation appliances and applications. Many of these appliances are becoming smart devices which can track our daily routines. It is imperative that all these devices should be secure. When cryptographic keys used for encryption and decryption are stored on memory present on these devices, they can be retrieved by attackers or adversaries to gain control of the system. For this purpose, Physical Unclonable Functions (PUFs) were proposed to generate the keys required for encryption and decryption of the data or the communication channel, as required by the application. PUF modules take advantage of the manufacturing variations that are introduced in the Integrated Circuits (ICs) during the fabrication process. These are used to generate the cryptographic keys which reduces the use of a separate memory module to store the encryption and decryption keys. A PUF module can also be recon gurable such that the number of input output pairs or Challenge Response Pairs (CRPs) …
Date:
May 2019
Creator:
Yanambaka, Venkata Prasanth
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"A Very Fine Piece of Writing": Parnell and the Joycean Text, 1905-1922
Charles Stewart Parnell was James Joyce's most significant political influence to a degree that has yet to be fully acknowledged or explored. This thesis proposes a "theory of Parnell" in Joyce's works up to the end of Ulysses, arguing that close attention to Parnell's evolution points to a significant shift in the evolution of Joyce's literary forms. In Joyce's juvenilia, political writings, and early fiction, Parnell always appears with a heroic, even Messianic, cast, which the most significant moments in the fiction pair with a strict adherence to dramatic forms. However, significant moments in both "Ivy Day in the Committee Room" and A Portrait of the Artist as a Young Man lay the groundwork for stylistic and representative transformations in Ulysses. In that novel, the myth of Parnell is deflated, even as Joyce appropriates its most essential qualities in the development of his panoply of styles. Episodes from "Telemachus" to "Wandering Rocks" critically examine the myth of Parnell even as they link it with the constraints of dramatic forms. Later episodes, most notably "Cyclops," "Circe," and "Eumaeus" attempt to make use of elements of "Parnellite" style, training a community of readers in acts of collective imagination that keep the Parnellite …
Date:
May 2019
Creator:
Smith, Benjamin J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
What Experiences do Trans* Students have during Their Time in College?
Although trans* students often face greater levels of discrimination, harassment, and hostility on college campuses than their cisgender peers, research indicated that they can succeed by developing and honing survival strategies, such as resilience and being part of a trans* kinship network that resists trans* oppression. Having the support of family, and by taking the risk to cultivate relationships while in college also improves the likelihood of persistence through college. The term trans* is used in this study as an inclusionary term for transgender persons and other gender nonbinary identities. The purpose of this research study was to explore the experiences that trans* students have while being in college. Utilizing a phenomenological approach and the theoretical lens of feminist and queer theories, semi-structured interviews were conducted to better understand the lived experiences of trans* college students. Four Caucasian trans* undergraduate students, ranging in age from 19 to 25 were each interviewed five times. Twenty total interviews over a period of three months provided in-depth data. Five primary themes emerged that were common among the participants: exploration, experimentation, and self-discovery; living as a trans* person in college: developing survival strategies; cultivating relationships and seeking acceptance; race and gender privilege/power; and generational …
Date:
May 2019
Creator:
McCormick, Mary Frances
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Civilian Conservation Corps in Big Bend National Park
During the New Deal, the Civilian Conservation Corps (CCC) put young men to work in state and national parks across the United States. One of such parks, Big Bend National Park, is the focus of this study. The CCC had two camps within the park, one from 1934 to 1937 and another from 1940 to 1942. During their time in Big Bend, the CCC constructed many projects including a road, trails, cabins, and other various structures. The purpose of this study is to delineate the role of the CCC in creating Big Bend National Park and the experience of the CCC during their time in the Big Bend camp. This study determines the role of the CCC through a discussion of the planning done by the CCC for Big Bend National Park and the work completed by the CCC in the park. In doing so, it argues that the CCC played a substantial and significant role in the development and character of the park. This study works to understand the experience of the CCC in Big Bend through a discussion of education, safety, and an investigation of a commanding officer. Through this discussion, the role of the federal government and …
Date:
May 2019
Creator:
Jackson, Kimberly
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploration of Genome Length, Burst Time, and Burst Size of Streptomyces griseus Bacteriophages
Since phages use the host resources to replicate themselves after infection, the different sizes of the phage genome should influence the replication rate. We, therefore, hypothesized that the smaller genomes should burst the cell faster than the larger ones. As well, the shorter genomes would have greater burst sizes because they should replicate faster. Here, we obtained 16 phages of various genome length. All phages were isolated on Streptomyces griseus and available in our phage bank at the University of North Texas. We performed one-step growth studies for the 16 phages, as well as determined the host doubling time from its growth curve. The results show that S. griseus grown in nutrient broth has a doubling time of 5 hours and 22 minutes. This doubling time is used as a guideline for the phage growth studies. Because the filamentous nature of the host caused several difficulties during the experiment, we isolated single cells by sonication and centrifugation. After the cell number was determined by viable cell count, the cells were infected with each type of phage using a multiplicity of infection (MOI) of 0.5. The results show that phages' burst times range between 45 (±0, standard error) and 420 (±30) …
Date:
May 2019
Creator:
Maneekul, Jindanuch
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Study on Flat-Address-Space Heterogeneous Memory Architectures
In this dissertation, we present a number of studies that primarily focus on data movement challenges among different types of memories (viz., 3D-DRAM, DDRx DRAM and NVM) employed together as a flat-address heterogeneous memory system. We introduce two different hardware-based techniques for prefetching data from slow off-chip phase change memory (PCM) to fast on-chip memories. The prefetching techniques efficiently fetch data from PCM and place that data into processor-resident or 3D-DRAM-resident buffers without putting high demand on bandwidth and provide significant performance improvements. Next, we explore different page migration techniques for flat-address memory systems which differ in when to migrate pages (i.e., periodically or instantaneously) and how to manage the migrations (i.e., OS-based or hardware-based approach). In the first page migration study, we present several epoch-based page migration policies for different organizations of flat-address memories consisting of two (2-level) and three (3-level) types of memory modules. These policies have resulted in significant energy savings. In the next page migration study, we devise an efficient "on-the-fly'" page migration technique which migrates a page from slow PCM to fast 3D-DRAM whenever it receives a certain number of memory accesses without waiting for any specific time interval. Furthermore, we present a light-weight hardware-assisted …
Date:
May 2019
Creator:
Islam, Mahzabeen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploration of Transition Metal-Containing Catalytic Cycles via Computational Methods
Styrene production by a (FlDAB)PdII(TFA)(η2-C2H4) complex was modeled using density functional theory (DFT). Benzene C-H activation by this complex was studied via five mechanisms: oxidative addition/reductive elimination, sigma-bond metathesis, concerted metalation deprotonation (CMD), CMD activation of ethylene, and benzene substitution of ethylene followed by CMD of the ligated benzene. Calculations provided evidence that conversion of benzene and ethylene to styrene was initiated by the fifth pathway, arylation via CMD of coordinated benzene, followed by ethylene insertion into the Ru-Ph bond, and then β-hydrogen elimination. Also, monomer (active species)/dimer equilibrium concentrations were analyzed. The results obtained from present study were compared with that of a recently reported RhI complex to help identify more suitable catalysts for the direct production of styrene from ethylene and benzene. Second, theoretical studies of heterobimetallic {Ag–Fe(CO)5}+ fragments were performed in conjunction with experiments. The computational models suggested that for this first example of a heterodinuclear, metal-only FeAg Lewis pair (MOLP) that Fe(CO)5 acts as a Lewis base and AgI as a Lewis acid. The ῡCO bands of the studied molecules showed a blue shift relative to those measured for free Fe(CO)5, which indicated a reduction in Fe→CO backbonding upon coordination to silver(I). Electrostatic interaction is predicted …
Date:
May 2019
Creator:
Ceylan, Yavuz Selim
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluating the Efficacy of Engagement Journalism in Local News: An Ethnographic Study of the Dallas Morning News
The Dallas Morning News is a leader in using engagement journalism to increase and retain digital subscribers. This ethnography examined the efficacy of the engagement journalism work by the News in rebuilding trust and forming relationships with its audience. This research is exceptionally timely as more newsrooms are erecting paywalls to their content and asking their audiences to offer monetary support in exchange for greater access and engagement by journalists. This work is examined through two mass communications theories: functionalism, which says a society can be viewed like an ecosystem as a "system in balance" consisting of complex sets of interrelated activities, each of which supports the others in maintaining the system as a whole; and the dual responsibility model, which says that companies should operate in the best interests of all in the community who depend on them, not only those who benefit financially. Additionally, the work is considered from a human-interaction design standpoint to evaluate whether the News has created affordances that enable the journalists and the readers to communicate, and whether the journalists are effectively practicing service design when publishing news and information for the audience.
Date:
May 2019
Creator:
Wise, Hannah Marie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Victim-Offender Overlap in Intimate Partner Violence: Considering the Role of Self-Control
While a growing body of literature in the field of criminal justice documents the relationship between victimization and offending, only recently has this knowledge been applied to the study of intimate partner violence (IPV). Accordingly, questions remain with regard to the theoretical origins of mutual violence between intimates. In an effort to fill this void in the literature, the current study examines the etiology of moderate forms of mutual IPV, specifically assessing self-control theory's applicability to the victim-offender overlap in IPV. Data were obtained from Waves I and IV of the National Longitudinal Study of Adolescent to Adult Health (Add Health) to investigate whether low self-control at Wave I predicts IPV victimization, IPV offending, or both IPV victimization and offending at Wave IV. The present study extends prior literature examining the role of self-control in IPV by (1) investigating the influence of self-control on the victim-offender overlap in IPV, (2) using longitudinal data, and (3) utilizing a sample of U.S. adults ages 24 to 33. While low self-control was found to significantly predict IPV offending and the overlap in IPV victimization and offending, low self-control failed to significantly predict IPV victimization. Policy implications, study limitations, and directions for future research …
Date:
May 2019
Creator:
Spivey, Emily
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Understanding Connections: Examining Digital Library and Institutional Repository Use Overlap
This paper examined how users navigated between other collections within the UNT IR, as well as within the UNT DL. Through this examination, we observed patterns between how users navigated between objects, understood which collections may have related to one another, examined why some unique items were used more than others, and viewed the average number of items used within a session
Date:
June 8, 2019
Creator:
Phillips, Mark Edward; Andrews, Pamela & Krahmer, Ana
Object Type:
Article
System:
The UNT Digital Library
Assessment of a Faculty Mentoring Program Using Validated Instruments
This presentation focuses on the faculty mentoring program for librarians at the University of North Texas. They used validated instruments to ensure the quality of the program. It was presented at the Texas Association for Higher Education Assessment Conference in 2019.
Date:
October 2, 2019
Creator:
Harker, Karen; Keshmiripour, Setareh; McIntosh, Marcia; O'Toole, Erin & Sassen, Catherine
Object Type:
Presentation
System:
The UNT Digital Library
Out of the Oven and into the (Reusable) Bag: Sous-Vide Book Delivery
This is a section of The Sustainable Library's Cookbook, which is a collection of sustainable activities for academic libraries. This particular section explores sustainable practices in the Access Services Department at the University of North Texas.
Date:
November 18, 2019
Creator:
Brand, Rebecca; Cornell, Emily; Cunningham, Chris; Johnston, Pamela & Keshmiripour, Setareh
Object Type:
Book Chapter
System:
The UNT Digital Library
Making Digital Collection Audio Visual Materials Accessible: Final Report
This report documents the Making Digital Collections A/V Materials Accessible project which sought to learn about and initially address accessibility compliance issues, specifically related to A/V materials in the UNT digital collections. The final report briefly describes the project scope, activities, budget, outcomes, best practices, and project continuity.
Date:
September 30, 2019
Creator:
Hicks, William
Object Type:
Report
System:
The UNT Digital Library
Evaluation of a Chicken 600K SNP genotyping array in non-model species of grouse
This article tested the cross-species application of the Affymetrix 600K Chicken SNP array in five species of North American prairie grouse (Centrocercus and Tympanuchus genera). This study study provided evidence for successful cross-species application of the chicken SNP array in grouse which diverged ca. 37 mya from the chicken lineage. As far as the authors are concerned, this is the first reported application of a SNP array in non-passerine birds, and it demonstrates the feasibility of using commercial SNP arrays in research on non-model bird species.
Date:
October 19, 2018
Creator:
Minias, Piotr; Dunn, Peter O.; Whittingham, Linda A.; Johnson, Jeff A. & Oyler-McCance, Sara
Object Type:
Article
System:
The UNT Digital Library
A Linguistic Analysis of Kanji: A Call for a Formal Framework
This poster was present at the DFW Metroplex Linguistics Conference at the University of North Texas main campus in Denton, Texas on November 8,2019. The poster highlights a preliminary linguistic framework for describing kanji.
Date:
November 2019
Creator:
Garton, Rachel
Object Type:
Poster
System:
The UNT Digital Library
Extraction of Urban Objects in Cloud Shadows on the basis of Fusion of Airborne LiDAR and Hyperspectral Data
This article, fused airborne LiDAR and hyperspectral data were used to extract urban objects in cloud shadows.The experimental results confirm that the proposed method is very effective for urban object extraction in cloud shadows and thus improve urban applications such as urban green land management, land use analysis, and impervious surface assessment.
Date:
February 1, 2019
Creator:
Man, Qixia & Dong, Pinliang
Object Type:
Article
System:
The UNT Digital Library
A Bibliographic and Visual Exploration of the Historic Impact of Soft Systems Methodology on Academic Research and Theory
This article produced descriptive narrative outcomes and data visualizations including information about top soft system methodology (SSM) authors, author citation impacts, common dissemination outlets for SSM work, and other relevant metrics commonly used to measure academic impact. The goal of this piece is to depict who, what, why, when, and where SSM had the greatest impact on research, systems thinking, and methodology after nearly 40 years of use, as we look towards its future as a methodological approach used to comprehend complex problem situations.
Date:
December 12, 2018
Creator:
Warren, Scott J.; Sauser, Brian & Nowicki, David
Object Type:
Article
System:
The UNT Digital Library
Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy
This article focuses on Al0.7CoCrFeNi, a lamellar dual-phase (fcc + B2) precipitation-strengthenable eutectic high entropy alloy. The back-stresses from the coherent L12 precipitate were insufficient to cause improvement in twin nucleation, owing to elevated twinning stress under quasi-static testing. However, under dynamic testing high density of twins were observed.
Date:
April 23, 2019
Creator:
Gwalani, Bharat; Gangireddy, Sindhura; Zheng, Yufeng; Soni, V.; Mishra, Rajiv & Banerjee, Rajarshi
Object Type:
Article
System:
The UNT Digital Library
TRAIL Microcard Scanning Project
Presentation on the topic of microcard digitization presented at the annual meeting for the Technical Report Archive and Image Library (TRAIL). This presentation discusses the opaque microcard format and a project conducted by the UNT Libraries to produce high-quality digital files from the format.
Date:
May 15, 2019
Creator:
Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
Microfiche Scanning at UNT
Presentation delivered at the Technical Report Archive and Image Library (TRAIL) annual meeting held in Denton, Texas. This presentation discusses the digitization of microfiche as part of the technical report digitization activities at the UNT Libraries.
Date:
May 15, 2019
Creator:
Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
NACA Metadata Uplift Update
Presentation delivered at the Technical Report Archive and Image Library (TRAIL) annual meeting held in Denton, Texas. This presentation discusses the metadata cleanup activities for the collection of technical reports from the National Advisory Committee for Aeronautics (NACA) which is hosted by the UNT Libraries for TRAIL.
Date:
May 15, 2019
Creator:
Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
Sustaining the Texas Digital Newspaper Program
Presentation given at the Preservation and Archiving Special Interest Group (PASIG) conference 2019 held in Mexico City, Mexico. This presentation discusses the Texas Digital Newspaper Program (TDNP) at the UNT Libraries and the process to enhance the sustainability of the program.
Date:
February 13, 2019
Creator:
Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
Web Archiving Singapore
Presentation for the 2019 International Internet Preservation Consortium General Assembly and Web Archiving Conference. This presentation discusses the history and current state of web archiving in Singapore.
Date:
June 6, 2019
Creator:
Lee, Ivy
Object Type:
Presentation
System:
The UNT Digital Library
Knowledge, Habits and Prospects of the Use of Web Archives Among the Academic Community in Croatia
Presentation for the 2019 International Internet Preservation Consortium General Assembly and Web Archiving Conference. This presentation discusses knowledge and use of the Croatian Web Archive among researchers in Croatia.
Date:
June 6, 2019
Creator:
Majstorović, Dunja & Holub, Karolina
Object Type:
Presentation
System:
The UNT Digital Library