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How Should You Publish?

Description: Presentation for the "Building an Open Textbook Publishing Program", the Open Textbook Publishing Winter Webinar Series 2019. This presentation focuses on the high-level decisions necessary when deciding how to offer a publishing service.
Date: February 20, 2019
Creator: Hawkins, Kevin S.

How Should You Publish?

Description: Recording of "Building an Open Textbook Publishing Program", the Open Textbook Publishing Winter Webinar Series 2019. This presentation focuses on the high-level decisions necessary when deciding how to offer a publishing service.
Date: February 20, 2019
Creator: Hawkins, Kevin S.

Identifying Gaps in Tools and Interfaces for Assessing Metadata Quality

Description: This paper discusses qualitative research conducted by the University of North Texas (UNT) Libraries regarding perceptions of quality by metadata creators and their managers. These perceptions of metadata quality are intended to identify gaps in tools and interfaces used to create metadata.
Date: February 19, 2019
Creator: Fox, Nathaniel T.; Tarver, Hannah & Phillips, Mark Edward

Allowing Students to Have VOICES [Voluntary Options in Chemical Education Schedules] in General Chemistry I

Description: The purpose of this investigation (a quasi-experimental design called a non-equivalent design group (NEDG)) was to determine if allowing students in a science majors general Chemistry I course the choice in establishing the due dates that their homework was due to the instructor would improve course averages. This study covered two semesters with a total of 288 students participating with n = 158 in the fall and n = 130 in the spring. The students self-selected the homework group, VOICES, that best fit his/her needs which included (1) the instructor's homework schedule, (2) a student-customized schedule or a schedule that followed the exam schedule, or (3) all homework due by the last class day prior to the final exam. Online homework was assigned and graded with individual assignment and homework average grades collected and analyzed. No statistically significant differences were found among the VOICES groups with respect to final course average. Other results of this study replicated findings in the literature; namely, that there is a higher correlation between mathematics skills and course success. Course averages of students who had completed Calculus I or higher were statistically significantly higher than students with less completed mathematics coursework in all VOICES groups. Also, the percentage of successful students in the on-sequence semester (fall) was higher than the percentage of students in the off-sequence semester (spring). No differences were seen in any VOICES group's student demographics or high school chemistry preparation.
Date: December 2018
Creator: Ford, Robyn Lynn

Paralegal Students' and Paralegal Instructors' Perceptions of Synchronous and Asynchronous Online Paralegal Course Effectiveness: A Comparative Study

Description: To improve online learning pedagogy within the field of paralegal education, this study investigated how paralegal students and paralegal instructors perceived the effectiveness of synchronous and asynchronous online paralegal courses. Survey results were analyzed using independent samples t-test and correlational analysis, and indicated that overall, paralegal students and paralegal instructors positively perceived synchronous and asynchronous online paralegal courses. Paralegal instructors reported statistically significant higher perceptions than paralegal students: (1) of instructional design and course content in synchronous online paralegal courses; and (2) of technical assistance, communication, and course content in asynchronous online paralegal courses. Instructors also reported higher perceptions of the effectiveness of universal design, online instructional design, and course content in synchronous online paralegal courses than in asynchronous online paralegal courses. Paralegal students reported higher perceptions of asynchronous online paralegal course effectiveness regarding universal design than paralegal instructors. No statistically significant differences existed between paralegal students' perceptions of the effectiveness of synchronous and asynchronous online paralegal courses. A strong, negative relationship existed between paralegal students' age and their perceptions of effective synchronous paralegal courses, which were statistically and practically significant. Statistically significant relationships existed between paralegal instructors' perceptions of effective synchronous online paralegal course and the number of courses taught by the paralegal instructor. Lastly, this study provided practical applicability and opportunities for future research.
Date: December 2018
Creator: Farmer, Shelley Kristine

Development of an Observation System to Measure Narratives of a Teaching Interaction

Description: Having a measurable way to analyze how staff members describe teaching interactions is important for staff training and building a community of effective and caring practice. The purpose of this project, part of a larger program, is to develop a measurement system that captures descriptions of connected events (narratives) during teaching interactions. This project involved development of a reliable measurement system that discriminates between experienced and novice narratives of teaching interactions (contingency arrangements) across multiple cases of instruction. The participants were employees of a non-profit agency serving children with autism and their families. They volunteered to participate in the study. The development of the code included the systematic selection of high quality autism intervention video clips and asking participants to view the clips and describe events, and then coding responses. The participant narratives were then categorized by themes and analyzed. The results are described in the context of usefulness and limitations of the measurement systems. A mutielement design comparing responses across stimulus conditions was used to evaluate the sensitivity of the measurement system in discriminating between novice and experienced interventionists.
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Date: December 2018
Creator: Hines, Dalai C

The Effects of an Instructional Package on the Emergence of Novel Intraverbals in Children with Autism

Description: We evaluated the effects of an instructional package on the emergence of novel intraverbals in children diagnosed with autism. Participants were two boys with a diagnosis of autism who had tact and listener repertoires for common objects and events, some intraverbal responses, and showed an ability to learn new intraverbal responses through direct instruction prior to participating in the study. Tact training, listener training, sorting training, and mixed training (listener and tact training) were conducted with each participant, with a probe to test for emergent intraverbals following each training step. If some emergence was seen during a probe following a training step, probes were conducted with the remaining sets to test for emergence in those sets as well. Multiple-exemplar training was conducted following the training steps if all targets within a set did not meet the criterion for emergence during probes. Results showed that for one participant, all four training steps, in addition to multiple-exemplar training, were needed to see emergence in all targets during probes for two sets, with the last two sets requiring only tact training before all targets had emerged during probes. The second participant required only tact training during three sets, with listener training required for one target in one set before all targets in all sets emerged during probes.
Date: December 2018
Creator: Macias, Heather A

A Control Theoretic Approach for Resilient Network Services

Description: Resilient networks have the ability to provide the desired level of service, despite challenges such as malicious attacks and misconfigurations. The primary goal of this dissertation is to be able to provide uninterrupted network services in the face of an attack or any failures. This dissertation attempts to apply control system theory techniques with a focus on system identification and closed-loop feedback control. It explores the benefits of system identification technique in designing and validating the model for the complex and dynamic networks. Further, this dissertation focuses on designing robust feedback control mechanisms that are both scalable and effective in real-time. It focuses on employing dynamic and predictive control approaches to reduce the impact of an attack on network services. The closed-loop feedback control mechanisms tackle this issue by degrading the network services gracefully to an acceptable level and then stabilizing the network in real-time (less than 50 seconds). Employing these feedback mechanisms also provide the ability to automatically configure the settings such that the QoS metrics of the network is consistent with those specified in the service level agreements.
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Date: December 2018
Creator: Vempati, Jagannadh Ambareesh

Influence of Social Media on Decision Making of the Kuwait National Assembly Members: Case Study

Description: In Kuwait, an increase in the use of social media by the Kuwait National Assembly (KNA) has allowed it members to reach out to the public and so advance their political agenda. This study examines social media influences on the decision making process; addresses the lack of academic research in relation to KNA members; and seeks to understand the extent to which public political engagement using social media might affect the outcome of their decision making. The proposed social media influence model (SMIM) was used to explore the relationships and relative importance of variables influencing legislator decision making in a social media environment. The second decade of the twenty-first century saw a number of major issues emerging in Kuwait. A core mixed method design known as explanatory sequential was applied to multiple sets of data generated during KNA members' 14th (2013-2016) and 15th (2016-2018) terms. These data included Twitter messages (tweets), the KNA Information Center Parliamentary Information System legislation documents, and the news media articles. The sample was drawn from KNA membership, some of which used Twitter to comment on major events with specific hashtags and the Kuwaiti news media articles related to the same. Study results confirm and support the proposed SMIM. They also suggest that a single person or a group of individuals (in this case, legislators) can be influenced and motivated to use social media for self-promotion and/or advancing their political agenda. Consequently, they can be used to devise ways for improving the use of social media by KNA members in support of legislative work, which in turn will provide citizens with access to real-time information and enhanced political interaction.
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Date: December 2018
Creator: Alfarhoud, Yousef T.

Where are the Women in the Ebola Crisis? An Analysis of Gendered Reporting and the Information Behavior Patterns of Journalists Covering a Health Outbreak

Description: Health officials estimate that the 2014 Ebola crisis disproportionately victimized women, who made up 75% of the disease's victims. This interdisciplinary study has two main goals. The first is to evaluate the news media's performance in relation to their representation of women caught up in the Ebola crisis because the media play an important role in influencing public responses to health. This study sought to understand the information behavior patterns of journalists who covered the Ebola crisis by analyzing how job tasks influence a journalist's information behavior. This study employed qualitative methods to study the perceptions of journalists who covered the 2014 Ebola outbreak. Semi-structured interviews were conducted with Liberian and American journalists who covered the outbreak to understand the choices that guided their reporting of the Ebola crisis. A content analysis of The New York Times, The Times, and The Inquirer was also conducted to examine the new media's representation of women in an outbreak which mostly victimized women. The findings suggest that covering a dangerous assignment like Ebola affected the information behavior patterns of journalists. Audience needs, the timing of coverage, fear, and the accessibility of sources, were some of the factors that influenced the news gathering decisions taken by the reporters. The findings also suggest that women were mostly underrepresented by the media as sources, experts and subjects.
Date: December 2018
Creator: Mumah, Jenny N

Improving Photovoltaic Panel Efficiency by Cooling Water Circulation

Description: This thesis aims to increase photovoltaic (PV) panel power efficiency by employing a cooling system based on water circulation, which represents an improved version of water flow based active cooling systems. Theoretical calculations involved finding the heat produced by the PV panel and the circulation water flow required to remove this heat. A data logger and a cooling system for a test panel of 20W was designed and employed to study the relationship between the PV panel surface temperature and its output power. This logging and cooling system includes an Arduino microcontroller extended with a data logging shield, temperature sensing probes, current sensors, and a DC water pump. Real-time measurements were logged every minute for one or two day periods under various irradiance and air temperature conditions. For these experiments, a load resistance was chosen to operate the test panel at its maximum power point. Results indicate that the cooling system can yield an improvement of 10% in power production. Based on the observations from the test panel experiments, a cooling system was devised for a PV panel array of 640 W equipped with a commercial charge controller. The test data logger was repurposed for this larger system. An identical PV array was left uncooled and monitored simultaneously to compare the effect of cooling, demonstrating that the cooled array provided up to an extra 132W or 20% of maximum power for sunny weather conditions. Future expansion possibilities of the project include automated water level monitoring system and water filtration systems.
Date: December 2018
Creator: Joseph, Jyothis

Smart Microgrid Energy Management Using a Wireless Sensor Network

Description: Modern power generation aims to utilize renewable energy sources such as solar power and wind to supply customers with power. This approach avoids exhaustion of fossil fuels as well as provides clean energy. Microgrids have become popular over the years, as they contain multiple renewable power sources and battery storage systems to supply power to the entities within the network. These microgrids can share power with the main grid or operate islanded from the grid. During an islanded scenario, self-sustainability is crucial to ensure balance between supply and demand within the microgrid. This can be accomplished by a smart microgrid that can monitor system conditions and respond to power imbalance by shedding loads based on priority. Such a method ensures security of the most important loads in the system and manages energy by automatically disconnecting lower priority loads until system conditions have improved. This thesis introduces a prioritized load shedding algorithm for the microgrid at the University of North Texas Discovery Park and highlight how such an energy management algorithm can add reliability to an islanded microgrid.
Date: December 2018
Creator: Darden, Kelvin S

Shaping Hagiography through Liturgy: Music for the Patron Saints of Three Cathedrals in Medieval Aquitaine

Description: While the development of hagiography over time has long attracted the attention of medievalists, scholars have not fully explored the critical role of the liturgy in prompting and transmitting these changes. This dissertation examines the liturgies for the patron saints of three musical and ecclesiastical centers in medieval Aquitaine: the cathedrals of Saint-Trophime in Arles, Saint-Just-et-Saint-Pasteur in Narbonne, and Saint-Étienne in Toulouse. Through the music, texts, and ritual actions of the liturgy, the clerical communities of these three institutions reinforced some aspects of their patron saint's legendary biography and modified others. Yet the process unfolded differently at each cathedral, revealing the particular preferences of the canons of each community as well as their changing circumstances during the Middle Ages. In Arles, the office for St. Trophime, which was likely composed at the cathedral, shows dramatic changes in the saint's hagiography. The clerics in Narbonne also composed an office for their patron saints but did not substantially change the details of Justus and Pastor's legendary biography. In Toulouse, the canons selected from among the preexisting repertoire of chants and texts available for St. Stephen, crafting liturgies that were particular to Saint-Étienne within a clearly Aquitanian context. By revealing the ways in which the clerics of Saint-Trophime, Saint-Just, and Saint-Étienne shaped the legendary biographies of their patron saints, my work provides new insights into the ways in which clerical communities throughout Latin Christendom shaped and reshaped the hagiographic portraits of their patron saints through the creation, compilation, and celebration of new liturgies.
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Date: December 2018
Creator: Recek, Andrea

A Meta-Analysis of the Effects of Turkey's Technology Integration Initiative on Teachers' Attitudes

Description: The purpose of this study was to determine the overall effectiveness of Turkey's technology integration initiative on teachers' attitudes and examine the moderating effects of related study characteristics. The 22 studies in this meta-analysis, carried out between the years 2010 and 2017, investigated the effects of Turkey's technology integration initiative on teachers' attitudes and met the inclusion criteria. This study followed a traditional meta-analysis research approach utilizing Hedge's g effect size to combine studies. The effect size was calculated using Comprehensive Meta-Analysis (CMA) software. The result (g = .31) indicates that Turkey's technology integration initiative had a moderate but significant influence on teacher attitudes. In addition to teacher attitudes, barriers that could contribute to some K–12 teachers' lack of integration training were identified. Based on the results it is recommended that future professional development and training for teachers include assessments of teacher technology usage by administrators, an increase in time for collaborative planning among teachers, and more just-in-time technology support for technology integration.
Date: December 2018
Creator: Gorunmek, Fatih

Development and Integration of a Low-Cost Occupancy Monitoring System

Description: The world is getting busier and more crowded each year. Due to this fact resources such as public transport, available energy, and usable space are becoming congested and require vast amounts of logistical support. As of February 2018, nearly 95% of Americans own a mobile cell phone according to the Pew Research Center. These devices are consistently broadcasting their presents to other devices. By leveraging this data to provide occupational awareness of high traffic areas such as public transit stops, buildings, etc logistic efforts can be streamline to best suit the dynamics of the population. With the rise of The Internet of Things, a scalable low-cost occupancy monitoring system can be deployed to collect this broadcasted data and present it to logistics in real time. Simple IoT devices such as the Raspberry Pi, wireless cards capable of passive monitoring, and the utilization of specialized software can provide this capability. Additionally, this combination of hardware and software can be integrated in a way to be as simple as a typical plug and play set up making system deployment quick and easy. This effort details the development and integration work done to deliver a working product acting as a foundation to build upon. Machine learning algorithms such as k-Nearest-Neighbors were also developed to estimate a mobile device's approximate location inside a building.
Date: December 2018
Creator: Mahjoub, Youssif

Molecular Dynamics Simulations of the Structures and Properties of Aluminosilicate and Borosilicate Glasses

Description: Silicate glasses are the most common glass types and have impact on almost every aspect in our lives: from window, containers, to glass fibers for telecommunications. Unlike their crystalline counterparts, glass materials lack long-range order in their atomic arrangement but their structures do possess short and medium range characteristics that play critical roles in their physical and chemical properties. Despite active development of characterization techniques that have contributed to the understanding of glass structures, there remain key challenges in obtaining essential structural features of glasses. Atomistic computer simulations have become an increasingly important method in elucidating the atomic structures and in interpretation and/or prediction of composition-structure-property relationships of complex materials. In this dissertation, classical molecular dynamic (MD) simulations were used to investigate the atomic structures, dynamic and other properties of two important glass systems—aluminosilicate glasses and borosilicate glasses, which are the basis of most industrial and technologically important glasses. Firstly, a comprehensive study of peralkaline Na2O-Al2O3-SiO2 glass with varying Al2O3/SiO2, Na2O/Al2O3, Na2O/SiO2 ratios has been performed to obtain better understanding of the composition–structure–property relationships in this glass system. More than 99% of Al were 4-coordinated in these glasses, validating that Na+ tend to charge balance [AlO4]- network forming units first and then, excess Na+ was used to create non-bridging oxygen (NBO) on Si. As the drop of Na/Al ratio, the percentage of NBO decreases, indicating an increase of the glass network connectivity. In addition, polyhedral connection probability results show that Al tend to be randomly distributed in the glass structure, suggesting a violation of Lowenstein's rule. These structural properties were further used to explain macroscopic properties of glass, such as change of glass transition temperature (Tg) and hardness (Hv) with glass composition. Secondly, molecular dynamics simulations were used to understand the structural, thermal mechanical and diffusion behaviors of spodumene (LiAlSi2O6) ...
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Date: December 2018
Creator: Ren, Mengguo

Process Improvement of Surface Preparation of Structurally Bonded Helicopter Detail Parts

Description: The objective of this study was to increase the bond strength at the surface interface of a thin stainless-steel panel for structural bonding on a helicopter. To achieve this objective, six activation methods for applying the coating to the panel in the surface preparation process are presented and explored. Adhesion and roughness tests were conducted to determine which method consistently initiates the etch and improves the bond at the surface. Based on the test results, three methods proved to be effective in initiating the etch. Of the three effective methods, only one method exhibited significantly improved bond strength at the surface interface as well as consistently initiated the etch in solution. The applicability of this method is discussed, and recommendations are presented for further study.
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Date: December 2018
Creator: Tafoya, Keirsten Breann

An Exploration of Elementary L2 Learners' Use of Metacognitive Strategies

Description: This multiple case study examined the experiences of elementary L2 learners who received instruction in either reciprocal teaching or the think aloud strategy (TAS), and identified patterns of use that emerged from participants' employment of the strategies. The three L2 participants took a pre- test and a posttest, were recorded using the strategies, and responded to interview questions about the strategies. Using qualitative data analysis techniques, four themes emerged from analysis of the data, including; talking like a teacher, I know what I know, established strategies, and declines to use the steps in the strategy. Implications from these findings suggest that the discussion facilitated by reciprocal teaching assists elementary L2 participants in better understanding the text and also supports their language acquisition, whereas TAS does not facilitate discussion. Further, even though reciprocal teaching promotes discussion, teacher assistance during discussion is necessary. Finally, it is essential that teachers are mindful of students' understandings of topics and the difficulty of texts used when students are learning the strategies.
Date: December 2018
Creator: McNeel, Michele E.

Exploring Growth Kinematics and Tuning Optical and Electrical Properties of Indium Antimonide Nanowires

Description: This dissertation work is a study of the growth kinematics, synthesis strategies and intrinsic properties of InSb nanowires (NWs). The highlights of this work include a study of the effect of the growth parameters on the composition and crystallinity of NWs. A change in the temperature ramp-up rate as the substrate was heated to reach the NW growth temperature resulted in NWs that were either crystalline or amorphous. The as-grown NWs were found to have very different optical and electrical properties. The growth mechanism for crystalline NWs is the standard vapor-liquid-solid growth mechanism. This work proposes two possible growth mechanisms for amorphous NWs. The amorphous InSb NWs were found to be very sensitive to laser radiation and to heat treatment. Raman spectroscopy measurements on these NWs showed that intense laser light induced localized crystallization, most likely due to radiation induced annealing of defects in the region hit by the laser beam. Electron transport measurements revealed non-linear current-voltage characteristics that could not be explained by a Schottky diode behavior. Analysis of the experimental data showed that electrical conduction in this material is governed by space charge limited current (SCLC) in the high bias-field region and by Ohm's law in the low bias region. Temperature dependent conductivity measurements on these NWs revealed that conduction follows Mott variable range hopping mechanism at low temperatures and near neighbor hopping mechanism at high temperature. Low-temperature annealing of the amorphous NWs in an inert environment was found to induce a phase transformation of the NWs, causing their crystallinity to be enhanced. This thesis also proposes a new and low-cost strategy to grow p-type InSb NWs on InSb films grown on glass substrate. The high quality polycrystalline InSb film was used as the host on which the NWs were grown. The NWs with an average diameter of ...
Date: December 2018
Creator: Algarni, Zaina Sluman