Partner
Collection
Serial/Series Title
Degree Department
Libraries
63
Digital Projects Unit
55
Department of Psychology
45
UNT Libraries
29
Department of Biological Sciences
26
Department of Teacher Education and Administration
24
Department of Computer Science and Engineering
22
Department of Counseling and Higher Education
22
Department of Chemistry
21
Department of Instrumental Studies
21
67 More
Degree Discipline
Degree Level
Country
States
Year
Month
Language
Results:
1 - 24 of
1,199
next
A Preliminary Controller Design for Drone Carried Directional Communication System
In this thesis, we conduct a preliminary study on the controller design for directional antenna devices carried by drones. The goal of the control system is to ensure the best alignment between two directional antennas so as to enhance the performance of air-to-air communication between the drones. The control system at the current stage relies on the information received from GPS devices. The control system includes two loops: velocity loop and position loop to suppress wind disturbances and to assure the alignment of two directional antennae. The simulation and animation of directional antennae alignment control for two-randomly moving drones was developed using SIMULINK. To facilitate RSSI-based antenna alignment control to be conducted in the future work, a study on initial scanning techniques is also included at the end of this thesis.
Date:
August 2015
Creator:
AL-Emrani, Firas
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Partnership for Building Institutional/National Capacity: Addis Ababa University and University of North Texas Initiatives
Presentation for the 2015 International Conference on Information Communication Technologies (ICT) for Development, Education, and Training. This presentation discusses partnerships for building institutional/national capacity and initiatives at Addis Ababa University and the University of North Texas.
Date:
May 2015
Creator:
Abate, Solomon Teferra & Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Determining the Emissivity of Roofing Samples: Asphalt, Ceramic and Coated Cedar
The goal is to perform heat measurements examine of selected roofing material samples. Those roofing materials are asphalt shingles, ceramics, and cedar. It’s important to understand the concept of heat transfer, which consists of conduction, convection, and radiation. Research work was reviewed on different infrared devices to see which one would be suitable for conducting my experiment. In this experiment, the main focus was on a specific property of radiation. That property is the emissivity, which is the amount of heat a material is able to radiate compared to a blackbody. An infrared measuring device, such as the infrared camera was used to determine the emissivity of each sample by using a measurement formula consisting of certain equations. These equations account for the emissivity, transmittance of heat through the atmosphere and temperatures of the samples, atmosphere and background. The experiment verifies how reasonable the data is compared to values in the emissivity table. A blackbody method such as electrical black tape was applied to help generate the correct data. With this data obtained, the emissivity was examined to understand what factors and parameters affect this property of the materials. This experiment was conducted using a suitable heat source to heat …
Date:
December 2015
Creator:
Adesanya, Oludamilola
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Identification and Characterization of an Arabidopsis thaliana Mutant with Tolerance to N-lauroylethanolamine
N-Acylethanolamines (NAEs) are fatty acid derivatives in plants that negatively influence seedling growth. N-Lauroylethanolamine (NAE 12:0), one type of NAE, inhibits root length, increases radial swelling of root tips and reduces root hair numbers in a dose dependent manner in Arabidopis thaliana L. (ecotype Columbia). A forward genetics approach was employed by screening a population of T-DNA “activation-tagged” developed by the Salk Institute lines for NAE resistance to identify potential genes involved in NAE signaling events in Arabidopsis thaliana L. (ecotype Columbia). Seeds of the activation tagged lines were grown at 0, 25, 30, 50, 75 and 100 µM N-lauroylethanolamime (NAE 12:0). Ten plants which displayed NAE tolerance (NRA) seedling phenotypes, compared with wildtype (Columbia, Col-0) seedlings were identified. I focused on one mutant line, identified as NRA 25, where the tolerance to NAE 12:0 appears to be mediated by a single dominant, nuclear gene. Thermal asymmetric interlaced (TAIL) PCR identified the location of the T-DNA insert as 3.86 kbp upstream of the locus At1g68510. Quantitative PCR indicated that the transcript level corresponding to At1g68510 is upregulated approximately 20 fold in the mutant relative to wildtype. To determine whether the NAE tolerance in NRA 25 is associated with overexpression of …
Date:
December 2015
Creator:
Adhikari, Bikash
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Time Series Data Analysis of Single Subject Experimental Designs Using Bayesian Estimation
This study presents a set of data analysis approaches for single subject designs (SSDs). The primary purpose is to establish a series of statistical models to supplement visual analysis in single subject research using Bayesian estimation. Linear modeling approach has been used to study level and trend changes. I propose an alternate approach that treats the phase change-point between the baseline and intervention conditions as an unknown parameter. Similar to some existing approaches, the models take into account changes in slopes and intercepts in the presence of serial dependency. The Bayesian procedure used to estimate the parameters and analyze the data is described. Researchers use a variety of statistical analysis methods to analyze different single subject research designs. This dissertation presents a series of statistical models to model data from various conditions: the baseline phase, A-B design, A-B-A-B design, multiple baseline design, alternating treatments design, and changing criterion design. The change-point evaluation method can provide additional confirmation of causal effect of the treatment on target behavior. Software codes are provided as supplemental materials in the appendices. The applicability for the analyses is demonstrated using five examples from the SSD literature.
Date:
August 2015
Creator:
Aerts, Xing Qin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
“No Paper Cowboys”: Stories
Equilibrium is paramount in the crafting of a story, and for every writer this sense of balance is different. The writer must manage a balance of showing and telling, of denotation and connotation, and forever strive to find the perfect word in both the denotative and connotative sense, so that the reader and writer can meeting in a living story—both in the ink on the page and the remaining white space.
Date:
December 2015
Creator:
Agnew, Bryn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Determinants of Effort and Associated Cardiovascular Response to a Behavioral Restraint Challenge
This study directly tested implications of motivation intensity theory on effort to restrain against a behavioral urge or impulse (i.e. restraint intensity). Two factors were manipulated—magnitude of an urge and the importance of successfully resisting it—with cardiovascular (CV) responses related to active coping measured. Male and female undergraduate students were presented with a mildly- or strongly evocative film clip with instructions to refrain from showing any facial response. Success was made more or less important through coordinated manipulations of outcome expectancy, ego-involvement, and performance assessment. As expected, systolic blood pressure responses assessed during the performance period were proportional to the evocativeness of the clip when importance was high, but low regardless of evocativeness when importance was low. These findings support a new conceptual analysis concerned with the determinants and CV correlates of restraint intensity. Implications of the study and associations with current self-regulatory literature are discussed.
Date:
December 2015
Creator:
Agtarap, Stephanie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Expertise Revisited: Reflecting on the Intersection of Science and Democracy in the Case of Fracking
This dissertation aims to explain the conditions under which expertise can undermine democratic decision making. I argue that the root of the conflict between expertise and democracy lies in what I call insufficiently “representative” expertise – that is forms of scientific research that are not relevant to the policy questions at hand and that fail to make visible their hidden values dimensions. I claim that the scholarly literature on the problem of expertise fails to recognize and address the issue correctly, because it does not open the black box of scientific methodologies. I maintain that only by making sense of the methodological choices of experts in the context of policy making can we determine the relevance of research and reveal the hidden socio-political values and consequences. Using the case of natural gas fracking, I demonstrate how expert contributions – even though epistemically sound – can muddle democratic policy processes. I present four case studies from controversies about fracking to show how to contextualize scientific methodologies in the pertinent political process. I argue that the common problem across all case studies is the failure of expertise to sufficiently represent stakeholders’ problems and concerns. In this context, “representation” has three criteria: (1) …
Date:
December 2015
Creator:
Ahmadi, Mahdi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Interrelated Histories, Practices, and Forms of Communication: Using Arabic Calligraphy to Learn Arabic Typography
In this self-study inquiry, I studied my graphic design practice in a professional setting, focusing on my Arabic typographic skills and knowledge. My roles as researcher and design educator indivisibly intertwined throughout this research. I worked to understand the value of calligraphy in art and design education, highlighting its power as an art form while also emphasizing its pedagogical potentials. I utilized two theoretical approaches suited to investigating and understanding the Arabic letters as text and image, Ibn Arabi’s science of letters, or 'ilm al-hurûf, and semiotics. I applied my theoretical framework to three distinctive artworks to investigate their uses of the Arabic letters, contemplating their roles in modern and contemporary Arab art. Essential to my research was learning Arabic calligraphy through two approaches: 1) I attended a calligraphy workshop, and 2) I conducted three self-study experimentations. I analyzed my experience through visual representations, commentary, and narrative inquiry to assess Arabic calligraphy’s significance for graphic design education. As such, my experimentations confirmed Arabic calligraphy’s aesthetic and educational value. I employed my findings to create a contemporary Arabic typography curriculum suitable for university-level students. This curriculum is built on learning theories such as visual culture analysis, semiotics, constructivist theory, play principles, …
Date:
August 2015
Creator:
Al-Ansari, Banan Ahmed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Therapist (Dis)Continuity, Therapeutic Relationship, and (Premature) Termination in a Psychology Training Clinic
Premature termination is a substantial problem with significant adverse effects for clients, therapists, and treatment organizations. Unfortunately, it is also a relatively common phenomenon within mental healthcare settings. Across varied mental healthcare settings, rates of premature termination have reportedly ranged from 19.7 % to 40 %. Perhaps not surprisingly, the rate of premature termination in training clinics is substantially higher than in community mental health settings and private practice, with 75 to 80 % of clients ending treatment services prematurely. The purpose of this study was to explore the combined effect of intake therapist continuity or discontinuity, and quality of the therapeutic relationship on premature termination. Intake therapist continuity, measures of working alliance, and termination outcome from 524 clients at the University of North Texas Psychology Clinic were utilized for adults receiving individual therapy services between August 2008 and August 2013. Results of the study suggest intake therapist continuity did not predict subjective termination status (X2(2, n = 524) = 1.61, p = 0.45), nor did it predict change in symptomology status (X2(3, n = 453) = 1.14, p = 0.77). Additionally, working alliance predicted subjective termination status (X2(6, n = 212) = 21.17, p < 0.01), but not change …
Date:
August 2015
Creator:
Al-Jabari, Rawya M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Limits of Arbitrage and Stock Mispricing: Evidence from Decomposing the Market to Book Ratio
The purpose of this paper is to investigate the effect of the "limits of arbitrage" on securities mispricing. Specifically, I investigate the effect of the availability of substitutes and financial constraints on stock mispricing. In addition, this study investigates the difference in the limits of arbitrage, in the sense that it will lead to lower mispricing for these stocks, relative to non-S&P 500 stocks. I also examine if the lower mispricing can be attributed to their lower limits of arbitrage. Modern finance theory and efficient market hypothesis suggest that security prices, at equilibrium, should reflect their fundamental value. If the market price deviates from the intrinsic value, then a risk-free profit opportunity has emerged and arbitrageurs will eliminate mispricing and equilibrium is restored. This arbitrage process is characterized by large number of arbitrageurs which have infinite access to capital. However, a better description of reality is that there are few numbers of arbitrageurs to the extent that they are highly specialized; and they have limited access to capital. Under these condition arbitrage is no more a risk-free activity and can be limited by several factors such as arbitrage risk and transaction costs. Other factors that are discussed in the literature …
Date:
December 2015
Creator:
AlShammasi, Naji Mohammad
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Documenting Cultural Memory in the Digital Age
Recording of a presentation session at the 2015 Digital Frontiers Annual Conference. In this session, the presenter discusses her digital photo essay on devotion to Guadalupe in the southwestern United States and in Mexico.
Date:
September 2015
Creator:
Albritton, Lilly
Object Type:
Video
System:
The UNT Digital Library
Documenting Cultural Memory in the Digital Age Question and Answer Segment
Recording of a question and answer session at the 2015 Digital Frontiers Annual Conference. In this session, presenters from the Documenting Cultural Memory in the Digital Age session answer questions from the audience.
Date:
September 2015
Creator:
Albritton, Lilly; Tinnen, Lupita & Polite, Giraud
Object Type:
Video
System:
The UNT Digital Library
Emerging Trends in Academic Research Libraries
Presentation for the 2015 Consortium of Ethiopia Academic and Research Libraries (CEARL) General Meeting Workshop. This presentation discusses emerging trends in academic and research libraries.
Date:
February 2015
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Enhancing UNT's Presence in Sub-Saharan Africa: Building Partnerships with Ethiopian Higher Education Institutions
Presentation for the 2015 University of North Texas (UNT) Student and Faculty Research Symposium on African Studies. This presentation discusses enhancing UNT's presence in Sub-Saharan Africa and building partnerships with Ethiopian higher education institutions.
Date:
April 11, 2015
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
ETD Lifecycle Management Workshop
Presentation for Jimma University discussing electronic theses and dissertation (ETD) lifecycle management.
Date:
July 7, 2015
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
The Impact of Open Access on the Current Landscape of Scholarly Communication
Presentation for Jimma University in summer 2015 discussing the impact of open access on the current landscape of scholarly communication.
Date:
July 7, 2015
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Understanding User Discovery of ETD: Metadata or Full-Text, How Did They Get There?
Presentation for the 2015 US Electronic Thesis and Dissertation Association (USETDA) Annual Conference. This presentation discusses understanding user discovery of electronic theses and dissertations (ETDs) and whether users make use of metadata records when searching or full text searching.
Date:
September 30, 2015
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
Digital Repository: Promoting Scholarship via the convergence of (local/global and digital/analogue) contents
Presentation at Jimma University discussing digital repositories and promoting scholarship through the convergence of local/global and digital/analogue contents.
Date:
February 19, 2015
Creator:
Alemneh, Daniel Gelaw & Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
Open Access and the Evolving Landscape of Scholarly Communication
Presentation for Addis Ababa University on open access and the evolving landscape of scholarly communication.
Date:
February 17, 2015
Creator:
Alemneh, Daniel Gelaw & Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
Emerging Trends and Evolving Issues in Open Access and Scholarly Communications
Presentation for the 2015 Texas Conference on Digital Libraries (TCDL). This presentation discusses emerging trends and evolving issues in open access and scholarly communication.
Date:
April 27, 2015
Creator:
Alemneh, Daniel Gelaw; Helge, Kris; Tmava, Ahmet Meti & Priyanto, Ida Fajar
Object Type:
Presentation
System:
The UNT Digital Library
Appendix G: Travel and Professional Development Documentation
Appendix to the UNT Libraries: TRAC Conformance Document. This appendix contains a table of conferences and related travels by members of the UNT Digital Libraries Division from 2013 to 2015.
Date:
October 2015
Creator:
Alemneh, Daniel Gelaw; Phillips, Mark Edward; Krahmer, Ana; Tarver, Hannah & Waugh, Laura
Object Type:
Text
System:
The UNT Digital Library
Appendix I: Timetable for Documentation Review
Appendix to the UNT Libraries: TRAC Conformance Document. This appendix contains the review schedule for specific technical documents.
Date:
October 2015
Creator:
Alemneh, Daniel Gelaw; Phillips, Mark Edward; Krahmer, Ana; Tarver, Hannah & Waugh, Laura
Object Type:
Text
System:
The UNT Digital Library
A Peer-to-Peer Approach to Review Compliance with Trustworthy Repository Audit and Certification (TRAC)
This poster explains the collaboration between the libraries at the University of North Texas and University of Florida in order to complete the Trusted Repository Audit Checklist (TRAC). The TRAC is an assessment to demonstrate good practice as a trusted digital repository to its communities. The poster was featured at the 11th International Conference on Knowledge Management in Osaka Japan.
Date:
November 2015
Creator:
Alemneh, Daniel Gelaw; Phillips, Mark Edward; Waugh, Laura; Tarver, Hannah & Krahmer, Ana
Object Type:
Poster
System:
The UNT Digital Library