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Analysis of Regional Magazine Content and Engagement on Twitter
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This two-part mixed-methods study analyzed the Twitter activity of two regional magazines – D Magazine and Texas Monthly – and how social media editors implement strategies to maintain journalistic integrity (news values, topics, and ethical standards) while increasing engagement.
Date:
December 2019
Creator:
Higgins, Claire Corinne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Construction Management Methods and Techniques in Army Tactical Shelter
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This thesis presents a research effort aimed at developing using construction methods and techniques in army tactical shelter. The beginning step focuses on developing and identifying different activities and work breakdown structure applicable in shelter prototype. The next step focuses on identifying resource allocation. This include allocate resources based on the delivered project as per alternative one and for the second alternative as optimization, resource allocation modified and tried to level and minimize resource peak. In addition, the cost calculated for the whole project as well as for each WBS and activities which consider as alternative one and in the second alternative, cost mitigation applied according to available resources and adjusting predecessors and successors of each activity. In conclusion, two alternatives compared, available outcome presents, and future work suggested for the project team to continue this effort.
Date:
December 2019
Creator:
Yeganehtalab, Babak
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Depression, Religious Behaviors and Social Support as Predictors of Health-Related Quality of Life among HIV Positive Individuals
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The goal of the current study was to evaluate the ways in which religious behaviors and perceived social support are associated with the relationship between depressive symptoms and health-related quality of life for this group. We hypothesized (1) that religious behaviors moderate the relationship between depressive symptoms and health-related quality of life, (2) perceived social support mediates the relationship between depressive symptoms and health-related quality of life and (3) that religious behaviors moderate the mediational indirect effect of perceived social support in the depression and health-related quality of life relationship. Findings from a sample of 244 HIV-positive individuals provided evidence to support direct, conditional, and indirect effects on the depressive symptoms and health-related quality of life relationship. A discussion of the findings, implications for future research and clinical practice are provided.
Date:
December 2019
Creator:
Davis, Cameron W
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Design Method of Cold-Formed Steel Framed Shear Wall Sheathed by Structural Concrete Panel
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The objective of this research is developing a new method of design for cold-formed steel framed shear wall sheathed by ¾" thick USG structural panel concrete subfloor using a predictive analytical model and comparing the results obtained from the model with those achieved from real testing to verify the analytical model and predicted lateral load-carrying capacity resulted from that. Moreover, investigating the impact of various screw spacings on shear wall design parameter such as ultimate strength, yield strength, elastic stiffness, ductility ratio and amount of energy dissipation is another purpose of this research.
Date:
December 2019
Creator:
Ashkanalam, Aida
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Driving Lessons" and Other Stories
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A study through short stories of the emotional effects on close family relationships before and after a traumatic death.
Date:
December 2019
Creator:
Allen, Laura Spencer
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Is it Really a Different World? Colorism Then and Now in Black Sitcoms
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This study focuses on dark-skinned, Black women's representation in Black sitcoms. Through a mixed-methods use of a comparative textual analysis and focus group, the content and context of episodes from A Different World and Dear White People are explored to illustrate portrayals of dark-skinned, Black women and how these portrayals affect dark-skinned, Black women's self-esteem. Its findings contribute to colorism research by exploring colorism in Black sitcoms. Because this topic is largely unexplored, this study seeks to begin a conversation about dark skinned, Black women's representation in Black sitcoms. The main objective is to ultimately improve their depictions and roles in Black sitcoms and hold Black creatives responsible for the role they play in promoting colorism and its ultimate effect on Black women's self esteem.
Date:
December 2019
Creator:
Johnson, Jasmine Cherese
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Phenotype Analysis of the CISD Gene Family Relative to Mitochondrial Function in Caenorhabditis elegans
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NEET proteins belong to a unique class of [2Fe-2S] cluster proteins that have been shown to participate in various biological processes such as regulating iron, reactive oxygen species and apoptosis within the cell and are localized to the mitochondria. Disruption of the mitochondrial NEET proteins are associated with different human diseases such as obesity, neurodegeneration, cancer and diabetes. In humans, a missense mutation in the CISD2 gene results in a heritable multisystem disorder termed Wolfram syndrome 2 (WFS2), a disease which displays an early onset of juvenile diabetes and various neuropsychiatric disorders. The C. elegans genome contains three previously uncharacterized cisd genes: cisd-1, which has homology to the human CISD1 and CISD2, and cisd-3.1 and cisd-3.2, both of which have homology to the human CISD3. Disruption of the cisd-3 gene(s) function results in mis-regulation of proteostasis in the mitochondria, whereas cisd-1 and cisd-3.1 disruption impacts proteostasis in the endoplasmic reticulum. Reduction of cisd-3.2 gene function also leads to a developmental delay in C. elegans. A knockout mutation of the cisd-3.2(pn68) gene function results in various germline defects including delayed development progression and morphological defects. Furthermore, I show the cisd gene(s) and protein expression profiles is present relative to sex, tissue …
Date:
December 2019
Creator:
Mungwira, Chipo F
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Running from My Youth": Essays
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Running From My Youth: Essays is a collection of nonfiction essays that explore important moments and experiences from the narrator's youth, and how he has addressed and remembered them in the years since. Some of the essays explore the narrator's time as a distance-runner, while others explore the awkwardness and discomfort onset by religion and nudity.
Date:
December 2019
Creator:
Jernigan, Hunter Jason Alexander
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
La vía del abandono en los cuentos de Amparo Dávila
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Amparo Davila's writing style is characterized by circumventing the boundaries between the real and the fantastic and between the known and the unknown. The author creates a narrative that evokes horror in the reader by mixing the uncanny of the unknown with the reality of the world. This study proposes that the sinister in Davila's stories are created by abandonment. This abandonment is the peremptory element of Davilian narrative and can be seen and examined throughout the author's literary work. The abandonment wields a mechanism of loneliness, madness, hopelessness and chaos that eventually provokes the sinister. The element of abandonment disturbs the main character of the story and makes him fall into an abyss from which he or she cannot escape. This abandonment is not always obvious, since most of the time the abandonment is veil by a halo of gothic and fantastic elements. The present thesis has the task of breaking down the different types of abandonment that are presented throughout this narrative, its sinister function and the theoretical and historical interpretation of the various abandonments both personal and collective that Amparo Davila presents. The route of abandonment proposed in this thesis is explained in the following three stories: …
Date:
December 2019
Creator:
Lopez, Rodrigo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
489 Days
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489 Days is an animated documentary about the harrowing experiences of Egyptian-American Mohamed Soltan, who survived 16 months of hunger strike in an Egyptian prison. Caught up in the political turmoil which followed the Arab Spring uprisings, Soltan was unjustly incarcerated between August 2013 and May 2015, when the United States government intervened to release him weeks after an Egyptian court sentenced him to life in prison. The film is also the larger story of an estimated 60,000 political detainees currently held in Egypt without due process, and in violation of local and international human rights conventions.
Date:
August 2019
Creator:
Elmalky, Rania
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Charpy Impact Testing of Twinning Induced Plasticity and Transformation Induced Plasticity High Entropy Alloys
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High entropy alloys (HEAs) are a new class of solid solution alloys that contain multiple principal elements and possess excellent mechanical properties, from corrosion resistance to fatigue and wear resistance. Even more recently, twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) non-equiatomic high entropy alloys have been engineered, promising increased strength and ductility as compared to their equiatomic counterparts. However, impact and fracture resistance of these HEAs has not been studied as much as their other mechanical properties. In this thesis, the hardness, tensile properties, and Charpy impact energy of Al0.3CoCrFeNi, a TWIP HEA, and 50Fe-30Mn-10Co-10Cr (at.%), a TRIP HEA, was explored. First, three processing conditions, (1) as-received, (2) recrystallized, and (3) peak hardness, were chosen for each alloy and verified with Vickers microhardness measurements. Next, the tensile properties of each alloy and condition were investigated. Charpy impact specimen size was then selected based on the final plate thickness, and the machined samples were tested. Plastic zone size and change in sample thickness in the deformed region of each condition after testing was measured. Post-impact test inspection of the samples in all conditions showed that the samples were in tension near the V-notch root and in compression at the …
Date:
August 2019
Creator:
Zellner, Samantha R
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comparing Cognitive Functioning in White Mexican/Mexican Americans and non-Hispanic White Americans with and without Type 2 Diabetes
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To better understand the impact of type 2 diabetes, the relationship between ethnicity, specifically Mexican/Mexican American ethnicity, and the disease must be further investigated. This study specifically examined the cognitive impact of type 2 diabetes. Data from the 2014 Health and Retirement Study was used to compare the cognitive functioning of non-Hispanic White (n = 10,658) and White Mexican/Mexican American (n = 847) individuals, age 50+ years, with and without type 2 diabetes. Serial 7's and immediate and delayed recall—hypothesized to be more negatively affected by type 2 diabetes and Mexican American status—was compared controlling for age, education, and depression. A multivariate analysis of covariance (MANCOVA) indicated significant main effects for race/ethnicity (F(3,11496) = 11.15, p < .001) and diabetes status (F(3,11496) = 3.15, p < .024), with Mexican Americans and those with diabetes having worse cognitive performance. There were significant effects for all covariates. A step-wise multiple regression indicated that education, age, depression, race/ethnicity and diabetes status accounted for a combined 28.4% of variance in a cognitive performance composite. Implications for assessment and treatment are discussed.
Date:
August 2019
Creator:
Saldana, Samantha Lee
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Dynamic Deformation and Shear Localization in Friction-Stir Processed Al0.3CoCrFeNi and Fe50Mn30Co10Cr10 High-Entropy Alloys
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High entropy alloys (HEAs) are a relatively new class of solid solution alloys that contain multiple principal elements to take advantage of their high configurational entropy, sluggish diffusion, lattice distortion, and the cocktail effect. In recent development, work hardening mechanisms known as twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) have been found active in Al0.3CoCrFeNi (molar fraction) and Fe50Mn30Co10Cr10 (at %) HEA compositions. Friction-stir processing was done to increase the mechanical properties and improve the microstructure of the alloys for the purpose of high strain rate performance. Quasi-static tensile tests as well as top-hat geometry Split-Hopkinson pressure bar tests were conducted to view the mechanical properties as well as view the microstructural evolution at dynamic strain rates. Overall, the Al0.3CoCrFeNi condition after friction-stir processing and heat treatment has proved to have the best mechanical properties, and selecting from the conditions in this study, Al0.3CoCrFeNi has better shear localization resistance.
Date:
August 2019
Creator:
Macdonald, Neil
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Benefit Types on Customer Loyalty in Integrated Resorts
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This study examined the relationships between the six benefit types and customer loyalty through trust and satisfaction in integrated resorts. A self-administered survey was developed based on previous studies in customer loyalty and was distributed through e-Reward online survey panel. The findings showed that only financial gaming benefits, functional gaming benefits, and psychological non-gaming benefits had impacts on customer attitudinal loyalty and customer behavioral loyalty through trust and satisfaction in integrated resorts. Besides, functional gaming benefits had the most influence on customer loyalty through trust and satisfaction. This study extended existing literature in integrated resorts by showing that benefit types in a loyalty program can build customer attitudinal loyalty and customer behavioral loyalty in integrated resorts. This study also examined different types of benefits affect customer loyalty in different degrees. For operators of integrated resorts, understanding how different benefits of a loyalty program affect customer loyalty will allow them to modify their loyalty programs effectively to increase revenue and maintain customers.
Date:
August 2019
Creator:
Su, Hsiang Wen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Enhanced Approach for the Classification of Ulcerative Colitis Severity in Colonoscopy Videos Using CNN
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Ulcerative colitis (UC) is a chronic inflammatory disease characterized by periods of relapses and remissions affecting more than 500,000 people in the United States. To achieve the therapeutic goals of UC, which are to first induce and then maintain disease remission, doctors need to evaluate the severity of UC of a patient. However, it is very difficult to evaluate the severity of UC objectively because of non-uniform nature of symptoms and large variations in their patterns. To address this, in our previous works, we developed two different approaches in which one is using the image textures, and the other is using CNN (convolutional neural network) to measure and classify objectively the severity of UC presented in optical colonoscopy video frames. But, we found that the image texture based approach could not handle larger number of variations in their patterns, and the CNN based approach could not achieve very high accuracy. In this paper, we improve our CNN based approach in two ways to provide better accuracy for the classification. We add more thorough and essential preprocessing, and generate more classes to accommodate large variations in their patterns. The experimental results show that the proposed preprocessing can improve the overall accuracy …
Date:
August 2019
Creator:
Sure, Venkata Leela
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Geography of Retail Clinics Post Implementation of the Affordable Care Act
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Retail clinics are walk-in clinics designed for convenience and for servicing minor health issues and certain acute conditions. The model began as a way of bringing both convenience and care to areas that have lower levels of access to primary care resources. With the implementation of Affordable Care Act (ACA) in March 2010, populations that were previously uninsured were now required to have access to some level of health insurance. These populations presented a potential new market for retail clinics. This research shows that post implementation of the ACA, retail clinics tend to locate in areas with higher incomes and, generally, greater access to primary care.
Date:
August 2019
Creator:
Portillo, Ethan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Lookouts
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Lookouts follows Matt and Joann, two fire tower lookouts for the United States Forest Service, as they discuss their happiness living in seclusion as well as the decline of fire towers due to technological advances.
Date:
August 2019
Creator:
Dejarnett, Claire
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Mining Biomedical Data for Hidden Relationship Discovery
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With an ever-growing number of publications in the biomedical domain, it becomes likely that important implicit connections between individual concepts of biomedical knowledge are overlooked. Literature based discovery (LBD) is in practice for many years to identify plausible associations between previously unrelated concepts. In this paper, we present a new, completely automatic and interactive system that creates a graph-based knowledge base to capture multifaceted complex associations among biomedical concepts. For a given pair of input concepts, our system auto-generates a list of ranked subgraphs uncovering possible previously unnoticed associations based on context information. To rank these subgraphs, we implement a novel ranking method using the context information obtained by performing random walks on the graph. In addition, we enhance the system by training a Neural Network Classifier to output the likelihood of the two concepts being likely related, which provides better insights to the end user.
Date:
August 2019
Creator:
Dharmavaram, Sirisha
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Processing-Structure-Property Relationships of Reactive Spark Plasma Sintered Boron Carbide-Titanium Diboride Composites
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Sintering parameter effects on the microstructure of boron carbide and boron carbide/titanium diboride composites are investigated. The resulting microstructure and composition are characterized by scanning electron microscopy (SEM), x-ray microscopy (XRM) and x-ray diffraction (XRD). Starting powder size distribution effects on microstructure are present and effect the mechanical properties. Reactive spark plasma sintering introduces boron nitride (BN) intergranular films (IGF's) and their effects on fracture toughness, hardness and flexural strength are shown. Mechanical testing of Vickers hardness, 3-point bend and Chevron notch was done and the microstructural effects on the resulting mechanical properties are investigated.
Date:
August 2019
Creator:
Lide, Hunter
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Psychological Well-Being and Family Functioning in Middle Childhood: The Unique Role of Sibling Relational Dynamics
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The current study examined associations between perceived family functioning, sibling relational dynamics, and individual's self-reported personal adjustment and internalizing problems among 8- to 11-year old children. Path analyses revealed significant direct effects between conflictual family functioning and children's psychological well-being (p < 0.05). Further, sibling conflict was found to indirectly affect these associations. Finally, significant interactions between family functioning and sibling dynamics were found suggesting that congruent relational dynamics at multiple levels of the family system had a cumulative impact on the child's well-being. Findings from the current study highlight the unique contributions of sibling relationships to the family and the child providing evidence for targeting the sibling relationship in clinical interventions and future family research.
Date:
August 2019
Creator:
Geerts, Ashley T.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Weapons of Mass Deception: Opacity and the Israeli Nuclear Program
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Use of this item is restricted to the UNT Community
Access to nuclear technology and growing concern over the spread of nuclear weapons triggered an international debate in the 1960s that led to the creation of the Nonproliferation Treaty. Ratified in 1970, NPT was designed to prevent the horizontal spread of nuclear weapons and limit destructive uses of nuclear energy. At the same time, it also normalized the arsenals of existing nuclear states and encouraged exchanges of nuclear information, technology, and materials for peaceful purposes. Nonproliferation policy relies on a theory of the development process that identifies a nuclear frontier to locate evidence of nuclear capabilities. Absent from the proliferation model, however, are cases of covert nuclear weapons programs. For almost 50 years, it has been generally accepted that Israel is a nuclear weapon state, yet Israeli officials have never confirmed nor denied the possession of nuclear weapons. Israel has not signed NPT and has not appeared to conduct a nuclear test, in effect absolving the nuclear program's main reactor from international inspections. Uncertainty surrounding the Israeli program stems from a tradition of deliberate secrecy and deception that constitutes a national policy of opacity. This study argues that opacity has armed Israel with the privilege of nuclear immunity, exempting its …
Date:
August 2019
Creator:
Beattie, Kathleen E
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Animals Alive and Dead
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Collection of poems.
Date:
May 2019
Creator:
Tieger, Leah
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cold-Formed Steel Member Connections Using BAC Screw Fasteners
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In this project, the main research objective is intend to seek criteria for evaluating the capacity of BAC screw fasteners with mixed configuration of waterproof seal washer, sealer tape and different pre-drill holes to determine shear and tension strength values for the screws used in cold-formed steel connections. The thesis presents the design methods and test program conducted to investigate the behavior and strength of the screw connections in shear and tension test. Test results were compared with AISI design provisions to determine if new design equations will be developed for those screws used in BAC cooling tower applications. LRFD resistance factors and ASD safety factors were investigated to the proposed design equations.
Date:
May 2019
Creator:
Li, Xun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Processing Conditions on the Surface Morphology of Few-Layered WS2 Thin Films
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Recent progress in layered transition metal dichalcogenides (TMDs) has led to various promising electronic and optoelectronic applications. However, the structure of materials plays a critical role in electronic and optoelectronic devices, and determines performance. Electronic and optoelectronic devices typically consist of multiple layers that form electrical homojunctions or heterojunctions. Therefore, in a device it can be expected that a WS2 layer may serve as the substrate for a subsequent layer in a multilayer device stack and determine how the layer grows. In transistor structures, roughness at the channel/gate dielectric interface introduces field variations and charge scattering. Therefore, understanding the relations between processing, surface morphology and properties is important. In this project, the effects of pulsed laser deposition (PLD) processing conditions on the surface morphology of few layered WS2 films were studied. WS2 films were synthesized under processing conditions that represent the extremes of surface supersaturation and kinetic energy transfer from the flux to the growing films, and evolution of the surface morphology was studied. The specific conditions were 1Hz/50mJ, 10Hz/50mJ, 1Hz/300mJ, and 10Hz/300mJ respectively. Combining AFM, XRD and Raman analyses, it was determined that deposition at 10Hz/300mJ, provided the best structural properties and surface morphology. Growth appeared to be 3D-cluster, …
Date:
May 2019
Creator:
Cai, Bimin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library