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A Feasibility Study of Cellular Communication and Control of Unmanned Aerial Vehicles (open access)

A Feasibility Study of Cellular Communication and Control of Unmanned Aerial Vehicles

Consumer drones have used both standards such as Wi-Fi as well as proprietary communication protocols, such as DJI's OcuSync. While these methods are well suited to certain flying scenarios, they are limited in range to around 4.3 miles. Government and military unmanned aerial vehicles (UAVs) controlled through satellites allow for a global reach in a low-latency environment. To address the range issue of commercial UAVs, this thesis investigates using standardized cellular technologies for command and control of UAV systems. The thesis is divided into five chapters: Chapter 1 is the introduction to the thesis. Chapter 2 describes the equipment used as well as the test setup. This includes the drone used, the cellular module used, the microcontroller used, and a description of the software written to collect the data. Chapter 3 describes the data collection goals, as well as locations in the sky that were flown in order to gather experimental data. Finally, the results are presented in Chapter 4, which draws limited correlation between the collected data and flight readiness Chapter 5 wraps up the thesis with a conclusion and future areas for research are also presented.
Date: December 2019
Creator: Gardner, Michael Alan
Object Type: Thesis or Dissertation
System: The UNT Digital Library
As the Need Presents Itself: Social Identity Theory and Signaling in Online Crowdfunding Campaigns (open access)

As the Need Presents Itself: Social Identity Theory and Signaling in Online Crowdfunding Campaigns

As social interactions increasingly become exclusively online, there is a need for research on the role of identity and social identity in online platforms. Drawing on Symbolic Interactionist approaches to identity, namely Social Identity Theory and Identity Theory, as well as Signaling Theory, this study argues that actors will selectively use religious language to signal their credentials to an audience for the purpose of garnering prosocial behavior in the form of donations to their fundraising campaign. Using latent semantic analysis topic models to analyze the self-presentations of crowdsourcing campaigners on GoFundMe.com, this study found evidence for the presence of signaling to a religious identity online as well as a significant difference in the presentation of need for campaigns originating in areas with high reported religiosity compared to campaigns from areas of low religiosity. In comparison to other campaigns, campaigners engaging in religious signaling were significantly increasing their donations. I suggest that strategically chosen religious topics in online crowdfunding is an example of low-cost identity signaling and provides insight into how signaling happens online and the potential outcomes resulting from this cultural work.
Date: December 2019
Creator: Hamilton, Scott J
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Parental stressor exposure simultaneously conveys both adaptive and maladaptive larval phenotypes through epigenetic inheritance in the zebrafish (Danio rerio) (open access)

Parental stressor exposure simultaneously conveys both adaptive and maladaptive larval phenotypes through epigenetic inheritance in the zebrafish (Danio rerio)

This article is a study using crude oil as an example of an environmental stressor in adult zebrafish. The offspring obtained were then assessed for transgenerational epigenetic transfer of oil-induced phenotypes. The authors conclude that epigenetic transgenerational inheritance can lead to an immediate and simultaneous inheritance of both beneficial and maladaptive traits in a large proportion of the F1 larvae. The adaptive responses may help fish populations survive when facing transient environmental stressors.
Date: September 5, 2019
Creator: Bautista, Naim M. & Burggren, Warren W.
Object Type: Article
System: The UNT Digital Library
Chronicles of Oklahoma, Volume 97, Number 3, Fall 2019 (open access)

Chronicles of Oklahoma, Volume 97, Number 3, Fall 2019

Quarterly publication containing articles, book reviews, photographs, illustrations, and other works documenting Oklahoma history and preservation.
Date: Autumn 2019
Creator: Oklahoma Historical Society
Object Type: Journal/Magazine/Newsletter
System: The Gateway to Oklahoma History
Differentiation: A Taxonomy of Online Learner Types in Higher Education (open access)

Differentiation: A Taxonomy of Online Learner Types in Higher Education

Online learning is no longer considered novel within higher education. It has emerged as an accepted distinct channel and environment for instructional engagement. There is a notable deficit of works and theoretical constructs specifically addressing the identification and differentiation of online learner types and examining them as a distinct system within the learning environment. Learning effectiveness within an online instructional environment is affected by the individual student engaged in the instruction. The instructional experience of the learner is determined by their individual perceptions of and reactions to both internal and external factors. Therefore, it is critical to address the online learner holistically as a stand-alone systemic dimension of the online learning environment to truly understand their differentiating behaviors, motives, characteristics, and dynamics. The study classified and articulated the distinctive types of learners engaged in online instruction within the higher education context based on the key dynamics, factors, and influencers of the individual in order to provide a more comprehensive understanding of the individuals engaged in learning. Additionally, the study generated a new theoretical model, the taxonomy of online learner types (TOLT) to provide unique insights into the different types of learners and serve as an essential step towards developing awareness …
Date: May 2019
Creator: Darby, Douglas
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Intergenerational Influences of Aggression: Social Cognitive Processes in Perspective-Taking and Aggressive Behavior in Young Adults' Romantic Relationships (open access)

Intergenerational Influences of Aggression: Social Cognitive Processes in Perspective-Taking and Aggressive Behavior in Young Adults' Romantic Relationships

The focus of the current study was to determine if SIP biases and perspective-taking serve as mediators between parental intimate partner violence (IPV), aggression, and interpersonal dominance in emerging adults' romantic relationships. We analyzed archival data comprised of self-report measures and TAT stories administered to 84 undergraduate students (women n = 62, M age = 21.73) between the ages 18 and 35. To test our hypotheses, we modified the social information processing model by incorporating perspective-taking, as measured through Interpersonal Decentering. Overall, we did not find significant association between witnessing parental IPV and Interpersonal Decentering maturity in college students. However, women's father-to-mother IPV was significantly negatively associated with Interpersonal Decentering maturity. For our mediation model, SIP aggressive responding biases were significantly associated with Interpersonal Decentering (average of story average scores) and with the presence of aggression in current romantic relationships; however, Interpersonal Decentering was not significantly predictive of aggression in current romantic relationships. Gender differences, study strengths and limitations, and future research directions are discussed.
Date: August 2019
Creator: Shamji, Jabeen
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Case Study of Leadership Supports of Job-Embedded Professional Development (open access)

A Case Study of Leadership Supports of Job-Embedded Professional Development

Professional development is a critical part of school improvement and enhancing teacher quality; yet there is limited literature about how principals design and lead effective professional development systems. The research activities in this qualitative single case study explored the leadership practices at one successful school implementing job-embedded professional development. A conceptual framework relating Hallinger's leadership for learning construct to professional development helped frame the research. Collected data included participant interviews, a focus group interview, observations, and relevant document analysis. These data were analyzed using a general inductive method to identify the prevailing leadership characteristics. The major themes that emerged during analysis were: (a) vision and goals, (b) high expectations, (c) structures and resources, (d) communication, (e) monitoring progress and providing recognition, (f) focused and ongoing professional development, (g) differentiated professional development, (h) trust and professionalism, (i) culture of learning and growth, (j) building capacity, and (k) collaboration. These themes aligned well with the initial conceptual framework. These findings support the concept that leadership for learning may have implications for school leaders trying to implement effective job-embedded professional development.
Date: December 2019
Creator: Jones, Amber
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Finding a Data-Driven Definition of Binge-Watching (open access)

Finding a Data-Driven Definition of Binge-Watching

Binge-watching, the act of watching large amounts of television at a time, has become a popular phenomenon internationally; however, it has yet to be sufficiently defined. In order to define binge-watching, data was collected on specific watching instances from 216 undergraduate students at a large research university. Hierarchical and k-means cluster analyses were conducted in Phase I to empirically determine how binge-watching should be defined. In Phase II, that definition was tested by correlating the number of instances of binge-watching in a one-week period, collected by seven days of daily diary logs, with several theoretically related measures including body mass index, dissociative tendencies, psychological distress, compulsion to watch, boredom proneness, and escapism through watching. The data-driven definition was found to be that eight hours or more of continuous watching was binge-watching, while anything less than that was not. In Phase II, the frequency of binge-watching through the seven-day period was calculated based on that new definition. The frequency of binge-watching was positively correlated with body mass index and dissociative tendencies with statistical significance at the alpha = .05 level. Compulsion to watch was not statistically significant; however, there was a positive correlation. These findings indicate that the proposed data-driven definition …
Date: December 2019
Creator: Kelly, Megan Erin
Object Type: Thesis or Dissertation
System: The UNT Digital Library
2019 Supplement to Texas Collections Manual Fifth Edition (open access)

2019 Supplement to Texas Collections Manual Fifth Edition

Additions and changes to a manual compiled by professional lawyers in the state of Texas regarding the processes and forms needed for debt collection transactions: "This supplement updates the practice notes and forms and incorporates relevant case law handed down before January 2019" (p. 1).
Date: 2019
Creator: State Bar of Texas
Object Type: Book
System: The Portal to Texas History

Improving Actigraphy Specificity to Better Inform Insomnia Diagnosis and Treatment Decisions

Access: Use of this item is restricted to the UNT Community
Accurate assessment of sleep-wake patterns is important for sleep researchers and clinicians. Actigraphs are low-cost, non-intrusive, wrist-worn activity detectors used to estimate sleep-wake patterns in a natural environment for several nights. Although actigraphy shows good sensitivity (sleep detection), it has consistently demonstrated poor specificity (wakefulness detection while lying in bed relatively motionless). Because insomnia is characterized by wakefulness in bed, actigraphy may not be a valid objective measure of wakefulness for this group. It is possible that refinement of actigraphy software settings for sleep/wake algorithms might improve specificity. The current studies investigated this hypothesis by comparing wake parameters from 48 combinations of actigraphy settings to determine which sleep/wake algorithms best inform insomnia diagnosis and treatment. In the first study, none of the 48 actigraphy setting combinations consistently discriminated between adults with insomnia (n = 69) and non-insomnia (n = 80) on all three wake parameters, and no setting clearly discriminated between groups for the composite variable, total wake time. Similarly, in the second study, no setting combinations consistently discriminated between adults treated for insomnia (n = 18) and controls with untreated insomnia (n = 26) on all three wake parameters. Although two setting combinations discriminated between groups for the composite …
Date: August 2019
Creator: Francetich, Jade Marie
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Chronicles of Oklahoma, Volume 97, Number 1, Spring 2019 (open access)

Chronicles of Oklahoma, Volume 97, Number 1, Spring 2019

Quarterly publication containing articles, book reviews, photographs, illustrations, and other works documenting Oklahoma history and preservation.
Date: Spring 2019
Creator: Oklahoma Historical Society
Object Type: Journal/Magazine/Newsletter
System: The Gateway to Oklahoma History
Transgenerational Responses to Environmental Stressors in Vertebrates: From Organisms to Molecules (open access)

Transgenerational Responses to Environmental Stressors in Vertebrates: From Organisms to Molecules

Genomic modifications occur slowly across generations, whereas short-term epigenetic transgenerational inheritance of adaptive phenotypes may be immediately beneficial to large numbers of individuals, acting as a bridge for survival when adverse environments occur. In this study we used dietary exposure to crude oil as an example of an environmental stressor to assess its effects from the molecular to the organismal levels in piscine and avian animal models. In addition, we assessed the role of the parental exposures on their offspring F1 generation. The research developed in this dissertation has contributed to several areas of investigation including molecular biology, animal physiology, and evolutionary biology. The quantitative information from these studies may be utilized to supplement information regarding the proximate and ultimate effects of environmental stressors on fish and bird populations. Furthermore, this information may be used as additional support for understanding the conservation of the responses from the molecular to the whole organismal levels across the vertebrate taxa, as well as their implications for population survival and maintenance. Additionally, the zebrafish (Danio rerio), the Siamese fighting fish (Betta splendens) and the king quail (Coturnix chinensis) have proven to be excellent models to start building a strong basis for understanding the effects …
Date: December 2019
Creator: Martinez Bautista, Naim
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Saturday, April 20, 2019 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Saturday, April 20, 2019

Triweekly newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: April 20, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Sanger News (Sanger, Tex.), Vol. 7, No. 46, Ed. 1 Thursday, October 17, 2019 (open access)

Sanger News (Sanger, Tex.), Vol. 7, No. 46, Ed. 1 Thursday, October 17, 2019

Weekly newspaper from Sanger, Texas that includes local, state, and national news along with advertising.
Date: October 17, 2019
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History

The Effects of the IAM Workshop on Preservice Teachers' Perceptions and Attitudes on Integrating Art and Mathematics In Saudi Arabia

Access: Use of this item is restricted to the UNT Community
This mixed-methods dissertation used an explanatory sequential design to examine art and mathematics preservice teachers' perceptions and attitudes towards integrating art and mathematics (IAM) after an IAM workshop. The conceptual framework of this study has its basis in three theoretical sources: constructivism, multiple intelligence theory, and semiotics. Each of these sources provides a conceptual lens to examine art integration in the curriculum and the teacher's role in facilitating this instructional process. Participants of this study included two sub-groups at a large university in Saudi Arabia. The first sub-group was preservice teachers of art education. The second sub-group was preservice teachers of mathematics. Quantitative and qualitative results indicated that the IAM workshop had positive impacts on art and mathematics preservice teachers' attitudes and perceptions of IAM. Participants attributed more value to art, were more willing to apply IAM, and felt that there was less barriers for applying IAM. The study also indicated differences between art and mathematics preservice teachers' attitudes towards IAM. The differences were due more to art value than willingness or barriers. After the IAM workshop, mathematics preservice teachers put more emphasis on the importance of art to mathematics, especially with respect to making mathematics a more enjoyable subject.
Date: August 2019
Creator: Mereie, Iman Ali
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 113, No. 86, Ed. 1 Saturday, July 27, 2019 (open access)

The Altus Times (Altus, Okla.), Vol. 113, No. 86, Ed. 1 Saturday, July 27, 2019

Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 27, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 42, Ed. 1 Saturday, February 23, 2019 (open access)

The Altus Times (Altus, Okla.), Vol. 113, No. 42, Ed. 1 Saturday, February 23, 2019

Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: February 23, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 44, Ed. 1 Saturday, March 2, 2019 (open access)

The Altus Times (Altus, Okla.), Vol. 113, No. 44, Ed. 1 Saturday, March 2, 2019

Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 2, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 102, Ed. 1 Saturday, September 21, 2019 (open access)

The Altus Times (Altus, Okla.), Vol. 113, No. 102, Ed. 1 Saturday, September 21, 2019

Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: September 21, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Light and Champion (Center, Tex.), Vol. 142, No. 19, Ed. 1 Wednesday, May 8, 2019 (open access)

The Light and Champion (Center, Tex.), Vol. 142, No. 19, Ed. 1 Wednesday, May 8, 2019

Weekly newspaper from Center, Texas that includes local, state, and national news along with advertising.
Date: May 8, 2019
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Saturday, March 23, 2019 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Saturday, March 23, 2019

Triweekly newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Effects on the Use of Technology-Based Self-Monitoring for Students with Autism Spectrum Disorder: A Meta-Analysis (open access)

Effects on the Use of Technology-Based Self-Monitoring for Students with Autism Spectrum Disorder: A Meta-Analysis

Self-monitoring involves teaching students to be aware of their own behavior, and be able to record whether the behavior happened or not. The present study uses meta-analysis of single case design (SCD) studies to evaluate the effectiveness of self-monitoring interventions that use electronic devices during implementation for individuals with autism spectrum disorder (ASD). Eligible studies were accessed to determine design quality, and examine the use of self-monitoring for individuals diagnosed with ASD. Studies were evaluated against inclusion-exclusion criteria. The studies that met inclusion criteria (n = 15) were assessed with the What Works Clearinghouse (WWC) standards for methodological rigor. The WWC standards were applied to baseline and intervention phases. There were a total of 12 studies with 32 students diagnosed with ASD that met SCD standards without, and with reservations. The 12 studies were evaluated using the Tau-U effect size metric to quantify the percentage of change that was attributed to the self-monitoring intervention. Overall, omnibus Tau-U was 0.96 (95% confidence interval [CI] = [0.89, 1.0]). Limitations and directions for future research are discussed.
Date: May 2019
Creator: Robertson, Ryan S
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Relationship of Motivational Climates, Mindsets, and Goal Orientations to Grit in Male Adolescent Soccer Players (open access)

The Relationship of Motivational Climates, Mindsets, and Goal Orientations to Grit in Male Adolescent Soccer Players

This article examines the relationships of the perceived motivational climate created by coaches (task-involving vs. ego-involving), athletes’ mindset (growth vs. fixed) and goal orientation (task vs. ego), to their grit. within the framework of achievement motivation theory.
Date: August 8, 2018
Creator: Albert, Erin; Petrie, Trent A. & Moore, Whitney G.
Object Type: Article
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 113, No. 40, Ed. 1 Saturday, February 16, 2019 (open access)

The Altus Times (Altus, Okla.), Vol. 113, No. 40, Ed. 1 Saturday, February 16, 2019

Semiweekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: February 16, 2019
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History