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Internet Health Information and Patient-health Professional Relationship

Description: The purpose of this study was to investigate patient use and presentation of Internet health information and its effect on patient-health professional relationship from a sample of residents at active adult communities in Texas. Five sites were used to recruit the 260 participants between November 2012 and January 2013. The data were received using a self-administered survey. Using Cronbach’s alpha, logistic regression and regression analysis through SAS, the data revealed that older respondents are less likely to discuss web-based information with health professionals. In addition, logistic regression analysis indicated that four of the variables, IHI Sharing, educational status (bachelor degree), marital status (married), and perceived health status (excellent and very good health) predicted varied of the 20 indicators making up the patient-health professional relationship scale. Further studies are needed to enhance this research.
Date: August 2013
Creator: Williams, TimMarie Chloe’ Uvonne

Attention and Metacognition in the Elaborated Intrusion Theory of Desire

Description: The elaborated intrusion (EI) theory of desire is a cognitive model that describes the processes involved in craving as intrusive thoughts that are elaborated upon leading to dissonance when desires are not met. While the theory is based on a wide body of research, certain theoretical predictions have not been fully examined. Specifically, EI theory argues that mental imagery has a central role in craving, and predicts that attempts to suppress substance-related intrusive thoughts and mental imagery is related to increased craving. Further, EI theory suggests that elaboration of craving imagery is related to attention and working memory processes, however, there are questions about whether differential performance in these domains is related to craving. The current study examined the relationship between attention/working memory performance and alcohol craving in a sample of 119 young adult males. Additionally, metacognition was examined to clarify the phenomenological aspects of craving within EI theory. Attention and working memory performance did not significantly predict intrusive thought and mental imagery elaboration. Individuals with high craving reported significantly higher levels of anxiety, thought suppression, and greater strength and frequency of craving-related mental imagery. They were also more likely to try to control their own thoughts and make negative judgments on their ability to do so. The strength of craving-related intrusive thoughts, not mental imagery, was the most significant predictor of craving. Implications for the understanding of craving and treatment recommendations based on the findings are discussed.
Date: August 2013
Creator: Yates III, Robert D.

An Action Research Study of Community Building with Elementary Students in a Title I School

Description: “In what ways does teaching with folk arts inspired visual arts-based instruction enhance community building among elementary students in a Title I school?” was the primary research question in this study. Agreeing with past and present day research that the construct of community is vital to social and cultural capital, this research attempts to determine how the notion of community benefits both students and teachers in the elementary art classroom. Folk art was utilized because this genre was accessible in terms of locality and familiarity among students and teachers. The purpose of this investigation was to produce teaching strategies and methods that show how community can be formed in the art classroom. The participants were elementary students, Grades 2 and 3, in a Title I school located in Denton, Texas. This investigation was conducted under an action research methodology. This approach to research is intended to be transformational, emergent, and accommodating. I recorded observations, field notes, and conversations from the participants. Emergent themes were discovered through content analysis and conceptual maps. Results from this investigation concluded transformation is only possible if the person wants change to happen. Data also showed that community and art education are symbiotic. Transformation, growth, and cultivation are demands that must be met in order for this relationship to flourish. In addition, data suggested that the role of folk arts-based lessons played a significant role in building community among second and third graders.
Date: May 2014
Creator: Dew, SaraBeth

A Low-cost Wireless Sensor Network System Using Raspberry Pi and Arduino for Environmental Monitoring Applications

Description: Sensors are used to convert physical quantity into numerical data. Various types of sensors can be coupled together to make a single node. A distributed array of these nodes can be deployed to collect environmental data by using appropriate sensors. Application of low powered short range radio transceivers as a communication medium between spatially distributed sensor nodes is known as wireless sensor network. In this thesis I build such a network by using Arduino, Raspberry Pi and XBee. My goal was to accomplish a prototype system so that the collected data can be stored and managed both from local and remote locations. The system was targeted for both indoor and outdoor environment. As a part of the development a controlling application was developed to manage the sensor nodes, wireless transmission, to collect and store data using a database management service. Raspberry Pi was used as base station and webserver. Few web based application was developed for configuring the network, real time monitoring, and database management. Whole system functions as a single entity. The use of open source hardware and software made it possible to keep the cost of the system low. The successful development of the system can be considered as a prototype which needs to be expanded for large scale environmental monitoring applications.
Date: May 2014
Creator: Ferdoush, Sheikh Mohammad

Inside the Third Sector: a Gongo Level Analysis of Chinese Civil Society

Description: This thesis investigates a new variant of the relationship between society and the states: Government-Owned (or Organized) Non-Governmental Organizations (GONGOs). Past research has typically understood civil society as a means to explain the orientation of groups of citizens towards collective outcomes. For decades, NGOs have been a key component of this relationship between political actors but the systematic study of GONGOs has been widely neglected by research. I used an original dataset collected from an NGO directory developed by the China Development Brief (CDB) that provides information on the functional areas of NGOs, their sources of funding and various organizational facts. These data were used to code a series of concepts that will serve as the basis for an initial systematic study into GONGOs and their relationship with the Chinese government. My theoretical expectations are that the primary predictors of an NGO’s autonomy relate to their functional areas of operation, their age and other geographical factors. I find preliminary support for the effect of an NGO’s age on its autonomy from the state, as well as initial support for the dynamic nature of the relationship between NGOs and the state. I close with a discussion of these findings as well as their implications for future research.
Date: August 2013
Creator: Kirby, John Brandon

The Impact of Standards-based Report Cards on Reading Development of Primary Grade Students

Description: The purpose of this mixed-method study was to explore the instructional changes in first grade classrooms and reading progress of first grade students in relation to implementation of standards-based report cards (SBRC). The goal of this study, conducted in a suburban Texas school district, was to determine whether there was a statistically significant difference in reading progress between students enrolled in first grade classrooms in which traditional report cards were used in comparison to comparable classrooms in which SBRCs were used. Additionally, the instructional practices of teachers were examined to determine the types of changes that took place as the district moved from traditional report cards to SBRCs. A total of 709 students and 15 teachers were involved in the study. The study revealed that there was no statistically significant difference between the reading growth of students assessed in SBRC classrooms and those assessed with traditional report cards. There were, however, significant differences in instructional practices employed by teachers in SBRC classrooms. These changes in practice included instructing with a greater degree of focus on specific objectives to be taught, more closely following the district’s scope and sequence, greater communication regarding the grading criteria and methods used for reporting progress, use of the most recent achievement data when determining grades (in comparison to averaging of grades during a reporting period), and a greater awareness of students’ specific abilities.
Date: August 2013
Creator: Newell, Suzanne Payne

Exploring the Gender Role Ideology of Black and White Men Between Ages 18 to 30

Description: This research is a qualitative study that explores the gender role ideology of Black and White men between the ages of 18-30. The study found that both groups are moving toward egalitarianism on different pathways. The pathways illustrate the effect of racial identity on gender role ideology. White respondents had a progressive egalitarianism which stemmed from ideas reflected individualism, secularization, and the identification with the grand narrative of the United States. Their respondents also reflected postmodern ideas. Overall their ideas reflect larger White racial identity and shows an overlap between the progressive understanding of modernity and with postmodernist ideas of non-deterministic definitions. Black respondents had a collaborative egalitarianism which stemmed from historical racial and economic deprivation. Subsequently, Blacks gender role ideology illustrates collaboration and communal interdependence between of Black men and women, and the Black church. Blacks tended to view things from a social perspective that was often reactionary. Overall, their ideas reflected the larger Black racial identity which emphasizes collaboration between men and women and a reliance on community based institutions like the Black church.
Date: May 2014
Creator: Strong, Myron

En La Frontera Entre La Vida Y La Muerte: a Study of Women Reporters on the Us–mexico Border

Description: In 2008 Ciudad Juarez erupted in a violent drug war. The Sinaloa Cartel and Juarez Cartel were in a battle for the lucrative drug route used to smuggle drugs into the United States, while President Felipe Calderon was waging his own war against all the drug cartels. During the height of the violence women journalists emerged on the front lines to tell the stories of Juarez. They risked their lives and dared to tell a story that others refused to. This mixed-method study examines frames used most often in the coverage of the drug war in Ciudad Juarez from 2008-2010. It examines The New York Times, the El Paso Times, and El Norte and also examines articles by the sex of the reporter. It also used in-depth interviews of both Mexican and American woman journalists who covered the drug war in Juarez to examine which themes developed about the reporter’s experiences in covering the drug war.
Date: May 2014
Creator: Guzman, Samantha

Declining Participation in Fraternity and Sorority Life: a Comparison of Perceptions of Greek-lettered Organizations Between Affiliated and Non-affiliated Students

Description: This quantitative study was used to determine the perceptions that may have caused a decline in membership in fraternities and sororities and to examine active organization involvement between affiliated and unaffiliated students at a single higher education institution in northeast Texas. Eight perceptions were given regarding fraternity and sorority life and why students chose to remain unaffiliated with fraternities or sororities. The instrument used was a modified version of the Extracurricular Involvement Inventory, created by Winston and Massaro (1987) and was administered to participants online via Survey Monkey. There were 206 participants total: 55.3% were female, and 44.7% were male. Regarding ethnicities, 47.0% were African American, 37.5% were Caucasian, and 15.5% were Hispanic/Latino. Out of the participants, 20.9% were in their freshman or sophomore year, 23.8% were juniors, 33.5% were seniors, and 21.8% were graduate students. Participants’ ages ranged from 18 to 32, with a mean of 22.89 (SD = 2.81). The research questions were analyzed using two techniques: logistic regression for the first question and multiple regression for the second question. Findings for the first research question indicated that lack of values, lack of diversity, poor academic attitudes, and a requirement of too much time were primary reasons unaffiliated students chose not to join a fraternity or sorority. Findings for the second question indicated that Greek-affiliated students averaged higher involvement intensity scores when compared to unaffiliated students. Practical implications and future research are discussed.
Date: May 2014
Creator: Shirley, Zachary E.

Into the Canyons

Description: Into the Canyons is a documentary short that provides an intimate portrait of two volunteer Wilderness Rangers working and living in Zion National Park in Utah for a summer. Sarah dreams of being a Park Ranger for the National Park Service, but must wait till she earns US citizenship. Working in an office, Allen wants a change in lifestyle. Together they explore the Wilderness and learn what it means to be a Park Ranger.
Date: May 2014
Creator: Hoekzema, Abbey

An Analysis of Honegger’s Cello Concerto (1929): a Return to Simplicity?

Description: Literature available on Honegger’s Cello Concerto suggests this concerto is often considered as a composition that resonates with Les Six traditions. While reflecting currents of Les Six, the Cello Concerto also features departures from Erik Satie’s and Jean Cocteau’s ideal for French composers to return to simplicity. Both characteristics of and departures from Les Six examined in this concerto include metric organization, thematic and rhythmic development, melodic wedge shapes, contrapuntal techniques, simplicity in orchestration, diatonicism, the use of humor, jazz influences, and other unique performance techniques.
Date: May 2014
Creator: Kleinmann, Denika Lam

The Poetic and Musical Dialogue of Ambrosini and Cavalcanti: a Study of Claudio Ambrosini’s a Guisa Di Un Arcier Presto Soriano for Solo Flute

Description: Claudio Ambrosini’s (b. 1948) unpublished work for unaccompanied flute, A guisa di un arcier presto soriano (1981), although virtually unknown to the musical public and to connoisseurs alike, represents one of the most dazzling and impressive displays of extended techniques in the repertoire of solo flute music. The title, A guisa di un arcier presto soriano, comes from the seventh line of a sonnet by the Italian medieval poet Guido Cavalcanti (ca. 1250-1300) and translates as “just like a fast Syrian archer.” The archer in question is Eros, the Greek god of love. By the composer’s own admission, the form and expression of this piece is closely linked with the form and expression of Cavalcanti’s sonnet. In particular, Ambrosini intimates three elements specifically drawn from the poem: 1) moments of tension and suspense, as Eros silently approaches his target with bow and arrow in hand; 2) moments of love, even to the point of suggesting a love song; and 3) moments that suggest the fast passage of arrows. The purpose of this dissertation is to explore these three elements in Ambrosini’s work and to trace the correlations of the same elements in Cavalcanti’s sonnet. The expression of such concrete poetic imagery in Ambrosini’s music is at times easily deciphered through clear programmatic gestures or wordless madrigalisms; and at other times the symbolism of the poetry is developed in a hidden and metaphorical manner in its musical iteration. Further, Ambrosini’s use of a particularly colorful and vast array of extended techniques serves as the impetus for the formal structure that the music embodies, and I will show that this formal structure is itself a symbolic and metaphorical representation of the poetic significance of Cavalcanti’s sonnet.
Date: August 2013
Creator: Choi, Su-hyun

Socioeconomic Status and Prosperity Belief in Guatemala

Description: A popular belief in the exploding Pentecostal movement in the global South is the idea that if an individual has enough faith, God will bless them with financial prosperity. Although historically Pentecostalism has been identified as a religion of the poor, this study examines recent arguments that the current Pentecostal movement in Guatemala is a religion of the socially mobile middle and elite classes. Data from the Pew Forum on Religious and Public Life’s 2006 survey Spirit and Power: Survey of Pentecostals in Guatemala is used to conduct a logistic regression, in order to measure the effects of socioeconomic status on adherence to prosperity belief. Results suggest that, contrary to the current literature on Guatemalan Pentecostalism, prosperity belief is not necessarily concentrated among the upwardly mobile middle and upper classes, but rather is widely diffused across social strata, and in particular, among those that have lower levels of education. These findings have implications for the study of Pentecostalism in Guatemala and in the global South in general.
Date: May 2014
Creator: Johnson, Lindsey A.

Harrison Birtwistle: an In-depth Study of His Music for Trumpet with a Performance Guide to the Silk House Tattoo

Description: This document examines the works by Sir Harrison Birtwistle that feature the trumpet as a solo instrument, with extra emphasis placed on The Silk House Tattoo. This document also features a performance guide for the trumpet parts of The Silk House Tattoo. Pedagogical methods for learning the most challenging passages are evaluated, and daily exercises based on the specific demands of each excerpt are offered.
Date: August 2013
Creator: Bonnett, Kurt L.

Technology-enhanced Classroom Environments and English Language Acquisition Among Native Spanish-speaking, English Language Learners in the Preschool and Elementary Classroom

Description: This qualitative study addressed the question: What are the perceptions of preschool and elementary bilingual and ESL teachers on how technology-enhanced classroom environments support native Spanish-speaking English language learners in the acquisition of English as a second language? With the support of six school districts representing three different regions and 15 schools in Texas, this research investigated technology-enhanced learning environments and the influence of emerging technologies on language acquisition by focusing on classroom interactions and learner engagement in preschool and elementary settings. Forty-six teachers completed the self-identified online questionnaire and from that initial group of participants, 10 were chosen for the face-to-face semi-structured interviews. A two-cycle progressive refinement coding technique was used for the analysis of the teacher interviews. In Vivo coding was selected for the first-cycle coding methodology to study teacher perspectives using their direct language. For the second-cycle methodology, focus coding was chosen as a continuation of the analytical process examining the developing patterns resulting in the initial codes being grouped to form salient categories. This process of reanalyzing and reorganizing coded data led to the creation of four emergent themes and in the views of the teachers interviewed describes how emerging technologies influences English language acquisition. The four emergent themes identified were “engaging students for learning,” collaborating with others,” “developing and clarifying concepts,” and “creating authentic work.”
Date: August 2013
Creator: Miller, Gary

Laser Surface Treatment of Amorphous Metals

Description: Amorphous materials are used as soft magnetic materials and also as surface coatings to improve the surface properties. Furthermore, the nanocrystalline materials derived from their amorphous precursors show superior soft magnetic properties than amorphous counter parts for transformer core applications. In the present work, laser based processing of amorphous materials will be presented. Conventionally, the nanocrystalline materials are synthesized by furnace heat treatment of amorphous precursors. Fe-based amorphous/nanocrystalline materials due to their low cost and superior magnetic properties are the most widely used soft magnetic materials. However, achieving nanocrystalline microstructure in Fe-Si-B ternary system becomes very difficult owing its rapid growth rate at higher temperatures and sluggish diffusion at low temperature annealing. Hence, nanocrystallization in this system is achieved by using alloying additions (Cu and Nb) in the ternary Fe-Si-B system. Thus, increasing the cost and also resulting in reduction of saturation magnetization. laser processing technique is used to achieve extremely fine nanocrystalline microstructure in Fe-Si-B amorphous precursor. Microstructure-magnetic Property-laser processing co-relationship has been established for Fe-Si-B ternary system using analytical techniques. Laser processing improved the magnetic properties with significant increase in saturation magnetization and near zero coercivity values. Amorphous materials exhibit excellent corrosion resistance by virtue of their atomic structure. Fe-based amorphous materials are economical and due to their ease of processing are of potential interest to synthesize as coatings materials for wear and corrosion resistance applications. Fe-Cr-Mo-Y-C-B amorphous system was used to develop thick coatings on 4130 Steel substrate and the corrosion resistance of the amorphous coatings was improved. It is also shown that the mode of corrosion depends on the laser processing conditions. The microstructure evolution and the corrosion mechanisms operating are evaluated using post processing and post corrosion analysis.
Date: May 2014
Creator: Katakam, Shravana K.

A Lego Mindstorms Nxt Based Test Bench for Multiagent Exploratory Systems and Distributed Network Partitioning

Description: Networks of communicating agents require distributed algorithms for a variety of tasks in the field of network analysis and control. For applications such as swarms of autonomous vehicles, ad hoc and wireless sensor networks, and such military and civilian applications as exploring and patrolling a robust autonomous system that uses a distributed algorithm for self-partitioning can be significantly helpful. A single team of autonomous vehicles in a field may need to self-dissemble into multiple teams, conducive to completing multiple control tasks. Moreover, because communicating agents are subject to changes, namely, addition or failure of an agent or link, a distributed or decentralized algorithm is favorable over having a central agent. A framework to help with the study of self-partitioning of such multi agent systems that have most basic mobility model not only saves our time in conception but also gives us a cost effective prototype without negotiating the physical realization of the proposed idea. In this thesis I present my work on the implementation of a flexible and distributed stochastic partitioning algorithm on the Lego® Mindstorms’ NXT on a graphical programming platform using National Instruments’ LabVIEW™ forming a team of communicating agents via NXT-Bee radio module. We single out mobility, communication and self-partition as the core elements of the work. The goal is to randomly explore a precinct for reference sites. Agents who have discovered the reference sites announce their target acquisition to form a network formed based upon the distance of each agent with the other wherein the self-partitioning begins to find an optimal partition. Further, to illustrate the work, an experimental test-bench of five Lego NXT robots is presented.
Date: May 2014
Creator: Patil, Riya Raghuvir

An Exploratory Study of Restaurant Multi-unit Managers’ Development

Description: Development is important to the initial phase of a new restaurant multi-unit manager (MUM), and appropriate training should be conducted in concert with acceptance of the position. The purpose of this study is to explore the need for individual training of restaurant MUMs in order to facilitate a smoother transition between executive level management positions. The exhaustive literature review aided in the creation of three research questions to be answered through the interpretation of collected interview data. Restaurant MUMs were invited to participate via LinkedIn, a social media network for professionals. Semi-structured interviews were conducted with 17 restaurant MUMs over a two-week period and then transcribed into Word documents and uploaded into ATLAS.ti for analysis. The use of tools within ATLAS.ti, such as network mapping and semantic layouts, allowed the researcher to interpret the correlation between codes and themes created and therefore, answer the research questions. Conventionally, managers have to leave their restaurants or area for many days in order to obtain the necessary training to be more effective in their positions. This study has concluded that while MUMs are aware of their tasks and responsibilities, they are not aware of training available in order to gain the skillset necessary to complete the tasks. Blanket training programs will not work for MUMs, they need training to be customized to such areas as new openings, wide-spread markets and the changing workforce. More courses in developing others need to be implemented so MUMs can learn the skills needed to properly develop their managers into leaders.
Date: May 2014
Creator: Lentz, Kathryn J.

Examining the Relationship Between Individual and Work Environment Characteristics and Learning Transfer Factors

Description: To impact student learning, educators’ implementation, or transfer, of new knowledge, skills, dispositions, and practices to daily work is the primary purpose of professional learning. The purpose of this study was to assess the multivariate relationship between individual and work environment characteristics as measured by the Collective Efficacy Scale and Dimensions of Learning Organization Questionnaire, respectively, and learning transfer factors as measured by the Learning Transfer System Inventory. The sample consisted of 249 PK-12 grade school- based instructional staff members of an education association. Canonical correlation and commonality analyses required using the two individual and work environment characteristics of learning culture and collective efficacy as predictor variables of the five learning transfer factors of performance self-efficacy, transfer-effort performance expectations, performance outcome expectations, performance coaching, and resistance to change to evaluate the multivariate between the two variable sets. Learning culture and collective efficacy demonstrated a relationship to resistance to change and performance outcome expectations. Learning culture and collective efficacy were insufficient to transfer-effort performance expectations, attend to performance self-efficacy beliefs, and increase support for transfer (i.e., performance coaching) factors. These findings might guide the decisions and practice of individuals with responsibility to plan, implement, and evaluate professional learning, and provide the conditions necessary for changing educational practice while increasing support for and building educators’ confidence about implementation. Further research may confirm the findings and enhance generalizability.
Date: August 2013
Creator: Kennedy, Jacqueline E.

Paralysis As “Spiritual Liberation” in Joyce’s Dubliners

Description: In James Joyce criticism, and by implication Irish and modernist studies, the word paralysis has a very insular meaning. The word famously appears in the opening page of Dubliners, in “The Sisters,” which predated the collection’s 1914 publication by ten years, and in a letter to his publisher Grant Richards. The commonplace conception of the word is that it is a metaphor that emanates from the literal fact of the Reverend James Flynn’s physical condition the narrator recalls at the beginning of “The Sisters.” As a metaphor, paralysis has signified two immaterial, or spiritual, states: one individual or psychological and the other collective or social. The assumption is that as a collective and individual signifier, paralysis is the thing from which Ireland needs to be freed. Rather than relying on this received tradition of interpretation and assumptions about the term, I consider that paralysis is a two-sided term. I argue that paralysis is a problem and a solution and that sometimes what appears to be an escape from paralysis merely reinforces its negative manifestation. Paralysis cannot be avoided. Rather, it is something that should be engaged and used to redefine individual and social states.
Date: May 2014
Creator: Heister, Iven Lucas

Utilizing North American Art Song Settings of Psalm Texts in Worship Services: an Annotated Guide for Singers, Voice Instructors, and Music Ministers

Description: This dissertation provides a guide for appropriate use of North American art song settings of biblical psalms for solo voice written after 1950 in the worship services of Christian faiths. The songs analyzed are for all voice parts and a variety of accompanying ensembles. The placement of each song on a specific calendar day is guided by the individual church calendars and lectionaries, on the prevalent themes of the text, and the characteristics of the musical setting. Performance of these songs only in a concert setting limits their usefulness for singers, voice teachers, and music directors alike. A new and worthy performing context can be established by analyzing the text and musical settings.
Date: May 2014
Creator: Siddons, Kyle

Performance Analysis of Two Alternative Hvac Systems for the Unt Zero Energy Lab

Description: This paper covers the simulation and comparison among three different HVAC (heating, ventilation & air conditioning)systems to achieve the goal of finding the most effective HVAC among these three in terms of human comfort, efficiency and cost considering North Texas climate. In the Zero Energy Lab at the University of North Texas, Denton, TX, the HVAC system of the building assembles with geothermal heat source. Here, water to water heat pump with radiant floor and water to air heat pump with air ducts provide heating & cooling of the building. In this paper electricity consumption, comfort, cost & efficiency analysis is done for the existing system using Energy Plus simulation software. Calibration of the simulated data of the existing system is done comparing with the actual data. Actual data is measured using 150 sensors that installed in Zero Energy Lab. After the baseline model calibration, simulation for ground source water to water heat pump, evaporative cooler with baseboard electric heater and water cooled electric chiller with baseboard electric heater (as a conventional system) is shown. Simulation results evaluate the life cycle cost (LCC) for these HVAC systems. The results of the comparison analysis among all the three HVAC systems show the most effective HVAC system among these three systems in North Texas weather. The results will make UNT Zero Energy lab a standard model towards a sustainable green future.
Date: August 2013
Creator: Hasib, Naimee

The Effects of Residual Gases on the Field Emission Properties of ZnO, GaN, ZnS Nanostructures, and the Effects of Light on the Resistivity of Graphene

Description: In this dissertation, I present that at a vacuum of 3×10-7 Torr, residual O2, CO2, H2 and Ar exposure do not significantly degrade the field emission (FE) properties of ZnO nanorods, but N2 exposure significantly does. I propose that this could be due to the dissociation of N2 into atomic nitrogen species and the reaction of such species with ZnO. I also present the effects of O2, CO2, H2O, N2, H2, and Ar residual gas exposure on the FE properties of GaN and ZnS nanostructure. A brief review of growth of ZnO, GaN and ZnS is provided. In addition, Cs deposition on GaN nanostructures at ultra-high vacuum results in 30% decrease in turn-on voltage and 60% in work function. The improvement in FE properties could be due to a Cs-induced space-charge layer at the surface that reduces the barrier for FE and lowers the work function. I describe a new phenomenon, in which the resistivity of CVD-grown graphene increases to a higher saturated value under light exposure, and depends on the wavelength of the light—the shorter the wavelength, the higher the resistivity. First-principle calculations and theoretical analysis based on density functional theory show that (1) a water molecule close to a graphene defect is easier to be split than that of the case of no defect existing and (2) there are a series of meta-stable partially disassociated states for an interfacial water molecule. Calculated disassociation energies are from 2.5 eV to 4.6 eV, that match the experimental observation range of light wavelength from visible to 254 nm UV light under which the resistivity of CVD-grown graphene is increased.
Date: May 2014
Creator: Mo, Yudong

“Werewolves and Time Machines”

Description: This collection consists of a critical preface and five short stories. The preface considers the use of the fantastical in fiction and how it works as a tool to reach readers in comparison with realistic fiction. The stories investigate this in by following several strange characters put in everyday human situations.
Date: May 2014
Creator: Edwards, Frisco