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  Partner: UNT Libraries
 Decade: 2010-2019
 Collection: UNT Theses and Dissertations
Native American Elements in Piano Repertoire by the Indianist and Present-Day Native American Composers
My paper defines and analyzes the use of Native American elements in classical piano repertoire that has been composed based on Native American tribal melodies, rhythms, and motifs. First, a historical background and survey of scholarly transcriptions of many tribal melodies, in chapter 1, explains the interest generated in American indigenous music by music scholars and composers. Chapter 2 defines and illustrates prominent Native American musical elements. Chapter 3 outlines the timing of seven factors that led to the beginning of a truly American concert idiom, music based on its own indigenous folk material. Chapter 4 analyzes examples of Native American inspired piano repertoire by the "Indianist" composers between 1890-1920 and other composers known primarily as "mainstream" composers. Chapter 5 proves that the interest in Native American elements as compositional material did not die out with the end of the "Indianist" movement around 1920, but has enjoyed a new creative activity in the area called "Classical Native" by current day Native American composers. The findings are that the creative interest and source of inspiration for the earlier "Indianist" compositions was thought to have waned in the face of so many other American musical interests after 1920, but the tradition has recently taken a new direction with the success of many new Native American composers who have an intrinsic commitment to see it succeed as a category of classical repertoire. Native American musical elements have been misunderstood for many years due to differences in systems of notation and cultural barriers. The ethnographers and Indianist composers, though criticized for creating a paradox, in reality are the ones who saved the original tribal melodies and created the perpetual interest in Native American music as a thematic resource for classical music repertoire, in particular piano repertoire. digital.library.unt.edu/ark:/67531/metadc28485/
Ida Gotkovsky's Eolienne Pour Flute et Harpe in Theory and Practice: A Critical Analysis
This dissertation addresses specific theoretical issues within Gotkovsky's Eolienne. She was a student of Messiaen, and his influence is evident in Eolienne, but at the same time, Gotkovsky's compositional voice is both personally distinctive and reflects l'esprit de temps of the twentieth century Parisian musical world. The research provides extensive analytical insight into Gotkovsky's musical language in Eolienne, specifically her use of symmetrical scales, emphasis on timbre, and formal constructs. Because there are limited scholarly resources available on the subject of flute and harp chamber music, and a small amount of biographical information on Gotkovsky, this dissertation is a significant contribution within the area of chamber music for flute, both historically and theoretically. It provides an analysis of Gotkovsky's musical language and the analysis gives performers access to musical-theoretical information previously unavailable. digital.library.unt.edu/ark:/67531/metadc28482/
An Historical Analysis of Rule and Policy Changes in the Texas University Interscholastic League One-Act Play Contest, 1986-2006, and the Results of Those Changes: Administrator and Teacher Perceptions
The University Interscholastic League (UIL) One-Act Play Contest is a competition where similarly sized Texas schools present an 18-40 minute play usually adjudicated by a single judge. At each level of competition the judge awards individual acting awards as well as selecting two productions to advance to the next level of competition. After the awards are announced the judge gives an oral critique to each of the schools. Because of the wide participation and diversity of plays produced, certain rules and guidelines have been adopted to ensure safety, allow for equity, satisfy legal standards, and make the running of the contest practical. These rules can be modified to achieve positive outcomes and improved educational results. Changes in the rules of a UIL contest are in accordance with stated educational objectives of the UIL. Occasionally, however, modifications in procedures raise questions. The problem of this study was to determine, from the perceptions of administrators and teachers, whether significant modifications in the rules and policies for the UIL One-Act Play Contest over a time span of 20 years have had impacts on the goals and procedures of the contest. The study utilized a qualitative approach through historical analysis and a survey to answer two research questions. Historical analysis identified the six modifications in the UIL OAP over the years 1986-2006. The survey instrument determined the impact of these changes on the goals and procedures of the contest. Based on the responses of the survey the competition experience has been enhanced by recent changes. digital.library.unt.edu/ark:/67531/metadc28480/
Musical Arrangements and Questions of Genre: A Study of Liszt's Interpretive Approaches
Through his exceptional creative and performing abilities, Franz Liszt was able to transform compositions of many kinds into unified, intelligible, and pleasing arrangements for piano. Nineteenth-century definitions of "arrangement" and "Klavierauszug," which focus on the process of reworking a composition for a different medium, do not adequately describe Liszt's work in this area. His piano transcriptions of Schubert's songs, Berlioz's Symphonie fantastique and the symphonies of Beethoven are not note-for-note transcriptions; rather, they reinterpret the originals in recasting them as compositions for solo piano. Writing about Liszt's versions of Schubert's songs, a Viennese critic identified as "Carlo" heralded Liszt as the creator of a new genre and declared him to have made Schubert's songs the property of cultured pianists. Moreover, Liszt himself designated his work with Berlioz's Symphonie fantastique and the symphonies of Beethoven "Partitions de piano": literally, piano scores. As is well known, concepts of genre in general create problems for musicologists; musical arrangements add a new dimension of difficulty to the problem. Whereas Carl Dahlhaus identifies genre as a tool for interpreting composers' responses to the social dimension of music in the fabric of individual compositions, Jeffrey Kallberg perceives it as a "social phenomenon shared by composers and listeners alike." The latter concept provides a more suitable framework for discussing the genre of transcriptions, for their importance derives in large part from relationships between the original and the derivative works, both as constructed by Liszt and perceived by critics and audiences. During the nineteenth and early twentieth century's, Liszt's transcriptions of songs and symphonies were construed as both compositions for pianists and subsets of the originals. Consequently, these compositions should be studied for their own musical value as well as for the light that they shed on the original works. Liszt's transcriptions are derivative and at the same time created distinct genres. digital.library.unt.edu/ark:/67531/metadc28488/
Effects of Tasks on Information-Seeking Behavior in a Police Work Environment in the Context of Criminal Intelligence
Although dominant effects of tasks on individuals' information-seeking behavior is accepted by many scholars, a limited number of studies has been conducted to reveal the nature of the relationship between tasks and information-seeking behavior. In their studies, some earlier researchers categorized tasks according to their complexity while others did the same according to the specifications of tasks. Two of the groundbreaking researchers in this area are Katriina Byström and Kalervo Järvelin who contributed to the understanding of the relationship between task complexity and information-seeking behavior. However, their findings also need empirical support for theory growth. In response to this need, this study attempts to test Byström and Järvelin's findings through a research using different research methods and applied in a police work environment. Other than providing empirical support for theory growth, this research is also expected to contribute to the understudied area of police information-seeking behavior. Both qualitative and quantitative data were collected from the participants who came from traffic, homicide, and anti-terrorism divisions of Ankara, Eskisehir, and Kirikkale Police Departments in Turkey. The participants identified terrorism cases as the most complex cases to solve, followed by homicide and traffic accident cases. Differences in the information-seeking behavior of three groups of police officers were examined through qualitative and quantitative data analysis. Oneway ANOVA technique and post hoc comparisons were used to analyze the quantitative data. In addition to shedding light on information-seeking behavior of police officers investigating related cases in Turkey, the results provided support for Byström and Järvelin's findings. For instance, the officers investigating more complex tasks used significantly more information sources than the others, while the use of external information sources was significantly higher in more complex cases. digital.library.unt.edu/ark:/67531/metadc28484/
An Analysis of UNT Commuting Patterns
Academic institutions have recently organized to address their campus' greenhouse gas emissions. Along those lines, the University of North Texas (UNT) pledged to minimize the campus' environmental impact, and conducted a transportation survey in May 2009. The analyses confirm that commuting to campus was the second highest source (29%) of UNT's greenhouse gas emissions, following purchased electricity (48%). Students, faculty and staff drive over 89 million miles per year, 84% of which comes from students. Forty‐two percent of student driving trips originate in the primary and secondary core areas surrounding Denton, which are partially served by buses. However, because these core areas are in close proximity to the campus, they contribute only 8% of the total student driving distance. Beyond the Denton core, the inner periphery of Denton County contributes another 22% of driving mileage. Students living in the outer periphery (outside Denton County) contribute the remaining 70% of total driving distance, and carpooling is currently their only alternative. digital.library.unt.edu/ark:/67531/metadc28489/
A Schenkerian Analysis of Beethoven's E Minor Piano Sonata, Opus 90
This thesis examines the history and origins of Beethoven's E minor Piano Sonata and examines the possibility of the programmatic conception of the work. Dedicated to Beethoven's friend Count Moritz Lichnowsky, the sonata may have been inspired by the Count's illicit affair with his future wife, the singer and actress Josefa Stummer. Providing a thorough Schenkerian analysis of both movements, the inner harmonic structure of the composition is revealed and explained. The author also investigates and details the unpublished original analyses of the composition by Heinrich Schenker, Erika Elias, and Hans Weisse. Both English and German language sources are incorporated into a comprehensive examination of Beethoven's Piano Sonata, op. 90. digital.library.unt.edu/ark:/67531/metadc28486/
Fathom's Edge
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Investigating elements of the creative process in the work of three poets: James Wright, Gjertrud Schnackenberg, and Pegeen Kelly. Each poet deploys a different method for access to those experiences that lie at the edge of accessible language. Each method is discussed and its deployment illustrated. Wright leads us from the sensory world to the supersensual. Schnackenberg makes use of the formal device of the fairy tale. Kelly immerses in the logic of dreams. Drawing on Elaine Scarry's theory of the imagination, the case is made that the poetic act is a dialectic between the poet and the sensory world, in which perception and imagination are equally important. digital.library.unt.edu/ark:/67531/metadc28483/
Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States
Macroinvertebrates associated with the aquatic plant, water stargrass (Heteranthera dubia), were sampled from 12 waterbodies in four regions of the United States from June to August 2005. Taxa richness, evenness, and diversity were lowest in the Lower Midwest (LMW) region, and higher in Northern sites, especially the Upper Midwest (UMW), and Northeast (NE). While relative abundance varied from site to site and region to region, utilization of the plant by functional groups remained fairly constant. Collector-gatherers consistently comprised the largest portion of invertebrates sampled. The shredder/ herbivore functional group comprised an average of 17 % of total groups. Through an exhaustive literature review, it was found that shredder/ herbivores of water stargrass have not been reported in the literature. Because of this, the herbivore group was analyzed separately and consisted of 2,383 specimens representing 23 species. The most common groups were Rhopalosiphum sp., Nectopsyche spp. and chironomids. No differences were found in herbivore diversity or evenness between sampling regions, but species richness was significantly different. digital.library.unt.edu/ark:/67531/metadc28427/
Analysis of Graduation Rates for Four-year Colleges: A Model of Institutional Performance Using IPEDS
Under the George W. Bush U.S. presidential administration, the federal government pushed for greater accountability among institutions of higher education for educational outcomes. Graduation rate is a key performance indicator of institutional accountability. Previous researchers of student attrition focused primarily on the effects of student level factors on student persistence/withdrawal behavior. Recently, researchers put more focus on the effects of institutional characteristics on graduation rates, but most of these studies were exploratory and based on multiple regression models. No institutional model has existed to synthesize their results within a theoretical framework. Such an institutional model is needed to explain the process of student persistence at the institutional level. The purpose of this study was to develop a model of institutional performance in graduation rate for four-year, public and private not-for-profit, Title IV institutions in the United States. This study validated the institutional model based on the IPEDS dataset using the structural equation modeling (SEM) technique. Further group comparison analyses are conducted by fitting the same SEM model to several subgroup datasets based on grouping variables such as control, geographical region and state. Benchmarking analyses were conducted to demonstrate how administrators and policy-makers can use the institutional model to compare the performance of an institution with its peers and what policy changes can they pursue to improve graduation rates. digital.library.unt.edu/ark:/67531/metadc28420/
Modulation of the Coelomic Fluid Protein Profile in the Earthworm, Lumbricus Terrestris, After Exposure to Copper as Copper Sulfate
Proteomic techniques were used to analyze the protein profile of earthworm, Lumbricus terrestris, coelomic fluid collected by either whole body dissection method or the coelomic cavity puncture method. Data demonstrated that collection of coelomic fluid using the coelomic cavity puncture method protocol resulted in a 32% reduction, 377 +/- 4.5 vs 253+/- 19.9 (p=0.0007), in the number of individual proteins. It was determined that the coelomic cavity puncture method yielded a "cleaner" preparation, one less contaminated with extraneous proteins from intestinal tissue, gut contents, and body wall materials. This protocol was used in all later studies. The same proteomic techniques were used to evaluate the effects that exposure to Cu (1.0 μg/cm2) as CuSO4 had on the earthworm coelomic fluid profile. Comparison of protein profile from exposed earthworms demonstrated a significant reduction in the number of proteins expressed (184 ± 2.64 vs 253 ±19.9 p=0.0192) when compared to control organisms. Cu exposure also resulted in a modulation of the protein profile with treated earthworms expressing 47 new proteins that were not identified in unexposed worm coelomic fluid. Additionally, 116 proteins found in coelomic fluid collected from normal worms were absent in Cu exposed organisms. Finally, 137 proteins were conserved or found in both control and exposed organisms; however of these proteins, 24 were up-regulated, 105 were down-regulated, and 8 were unchanged as a result of Cu exposure. digital.library.unt.edu/ark:/67531/metadc28428/
The Vocal Pedagogy of Frederic Woodman Root
Frederic Woodman Root was a vocal pedagogue and writer of the late nineteenth century. He wrote over eighteen books on vocal pedagogy, and numerous articles on singing. Since his death, most of his works have fallen into obscurity. The purpose of this document was to codify the vocal pedagogy of Frederic Woodman Root, discussing his particularly thorough methodology, and to bring his methods back into the public eye. His method is broken down into the various components of basic musicianship, the General Principle, the Three Vowel Forms, registers, breathing, and agility. Examples from Root's exercises are included and discussed. digital.library.unt.edu/ark:/67531/metadc28424/
Speaking up: Applying the Theory of Planned Behavior to Bystander Intervention in Racism
Because racism remains a significant issue in society, and many victims of racism do not speak up for themselves when faced with racism, it is important to explore how witnesses to racist events may react and intervene upon observing racism toward others. Thus, the current study explored how participants (bystanders) reacted verbally to racist comments made by a confederate during a partner activity, as well as how participants discussed their reactions in post-interviews. Forty college students participated in the study, and three of the participants verbally intervened upon hearing the racist statements. Ajzen's theory of planned behavior was utilized as a framework, and examination of the results indicated that components of the theory as well as social constructions of racism and appropriateness of intervention behaviors affect intervention outcomes. Theoretical, methodological, and practical implications, as well as suggestions for future research are included. digital.library.unt.edu/ark:/67531/metadc28425/
Development of a Test Blueprint for a Hospitality Management Capstone Course to Measure Programmatic Student Learning Outcomes
The purpose of this study was to develop a test blue-print for a hospitality management capstone course to measure programmatic student learning outcomes. A total of 50 hospitality industry professionals and hospitality management faculty were interviewed through focus group discussions, and a post-focus group survey was conducted to determine a weighted percentage for each of the nine determined content domains. A test blueprint was developed from the weighted proportions determined by this study and a process by which other educational institutions could follow to establish a consistent and accurate evaluation method for a capstone course was described. digital.library.unt.edu/ark:/67531/metadc28481/
"Among Waitresses": Stories and Essays
The following collection represents the critical and creative work produced during my doctoral program in English. The dissertation consists of Part I, a critical preface, and Part II, a collection of seven short stories and two nonfiction essays. Part I, which contains the critical preface entitled "What to Say and How to Say It," examines the role of voice in discussions of contemporary literature. The critical preface presents a definition of voice and identifies examples of voice-driven writing in contemporary literature, particularly from the work of Mary Robison, Dorothy Allison, and Kathy Acker. In addition, the critical preface also discusses how the use of flavor, tone, and content contribute to voice, both in work of famous authors and in my own writing. In Part II of my dissertation, I present the creative portion of my work. Part II contains seven works of short fiction, titled "Among Waitresses," "The Lion Tamer," "Restoration Services," "Hospitality," "Blood Relation," "Managerial Timber," and "Velma A Cappella." Each work develops a voice-driven narrative through the use of flavor, tone, and content. Also, two nonfiction essays, titled "Fentanyl and Happy Meals" and "Tracks," close out the collection. "Fentanyl and Happy Meals" describes the impact of methamphetamine addiction on family relationships, while "Tracks" focuses on the degradation of the natural world by human waste and other forms of pollution. In total, this collection demonstrates my approach to both scholarly and creative writing, and I am grateful for the University of North Texas for the opportunity to develop academically and achieve my goals. digital.library.unt.edu/ark:/67531/metadc28429/
The Influence of Japanese Composers on the Development of the Repertoire for the Saxophone and the Significance of the Fuzzy Bird Sonata by Takashi Yoshimatsu
The history of the saxophone and its development as a performance medium in Japan is short when compared with other European countries and the United States. In this short history, the saxophone performance level in Japan has increased dramatically. At the same time, compositions for the saxophone by Japanese composers have gained more popularity in the world as can be seen in the program of the World Saxophone Congress and the North American Saxophone Alliance conference. The saxophone history in Japan, including contributions of Arata Sakaguchi (1910-1997), Ryo Noda (b.1948), and Nobuya Sugawa (b.1961), is discussed in order to understand the increase of performances of pieces for saxophone by Japanese composers. The success of many original compositions, especially those that incorporate the synthesis of Eastern and Western music, is another significant element examined in this document. Yoshimatsu approaches music for classical saxophone as a new genre. He seeks all possible sounds that the saxophone can create - beautiful tone to "noise like" - in his compositions. The blending of other musical styles in one piece is one of Yoshimatsu's compositional styles, which can be observed in Fuzzy Bird Sonata; however, he does not limit himself to a single style. This unique style with some technical challenges attracts saxophonists and audiences. An analysis of Fuzzy Bird Sonata is provided in order to have a better understanding of the piece and to address performance practice issues. Also various interpretations are examined by comparing available recordings of Sugawa, Nicolas Prost, and Rob Buckland. digital.library.unt.edu/ark:/67531/metadc28426/
Présentations de la Grammaire et Représentations du Discours Dans les Manuels de Français Publiés aux États-Unis: une Étude Diachronique
This study partially replicates and re-explores specific dimensions of a textbook analysis of the presentation and use of specific grammatical elements and sociolinguistic variants in textbooks published in the United States for learners of French. Authenticity is situated as a central construct in the analysis of interrogatives, relative pronouns, and the negative particle ne in selected textbooks and ancillary materials. The findings reveal that little progress has been made over the past twenty years in integrating authentic representations of discourse into French-as-a-foreign-language textbooks. digital.library.unt.edu/ark:/67531/metadc28423/
A Case Study of Undergraduate Course Syllabi in Taiwan
Higher education in Taiwan has been influenced by U.S. and Western practices, and syllabi represent one means to verify this. However, limited research exists in Taiwan on course syllabi and on similarities of syllabi with practices in other countries. In the U.S. as the paradigm shifted from teaching to learning and to the learning-centered context, scholars argued that syllabi should be learning-centered. Given the assumption that higher education in Taiwan is similar to U.S. higher education and the call for a learning-centered context, this qualitative research examined 180 undergraduate syllabi at a public university in Taiwan with a (traditional) syllabus component template and a learning-centered syllabus component template derived from the literature in the U.S. to describe (1) the contents of syllabi, and (2) the extent that syllabi in Taiwan were congruent to U. S. syllabus component templates. Syllabi at this university were highly congruent with the (traditional) syllabus component template and were congruent at the medium level with the learning-centered component template. About 90% of syllabi included 8 of 10 major components. Additional findings included: 70% of faculty were male, and 30% were female; more than 75% of the faculty earned their doctoral degrees from the United States or Europe; gender made no difference on inclusion of major components for both templates; there was no difference in inclusion of components on both templates for faculty who earned their doctoral degrees from the U.S. or Taiwan; a high percentage (80%) of college courses adopted English textbooks published in the U.S.; some differences existed and use of English in the syllabus and on components included in the syllabi. Based on these syllabi, it is evident that syllabi in Taiwan represent course planning and organization congruent to recommended practices in the United States. digital.library.unt.edu/ark:/67531/metadc28487/
Jeans, Boots, and Starry Skies: Tales of a Gay Country-and-Western Bar and Places Nearby
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Fourteen short stories, with five interspersed vignettes, describe the lives of gay people in the southwestern United States, centered around a fictional gay country-and-western bar in Dallas and a small town in Oklahoma. Various characters, themes, and trajectories recur in the manner of a short story cycle, as explained in the prefatory Critical Analysis, which focuses on exemplary works of James Joyce, Ernest Hemingway, William Faulkner, Shirley Jackson, Italo Calvino, Yevgeny Kharitonov, and Louise Erdrich. digital.library.unt.edu/ark:/67531/metadc28422/
Effect of fluorine and hydrogen radical species on modified oxidized Ni(Pt)Si
NiSi is an attractive material in the production of CMOS devices. The problem with the utilization of NiSi, is that there is no proper method of cleaning the oxide on the surface. Sputtering is the most common method used for the cleaning, but it has its own complications. Dry cleaning methods include the reactions with radicals and these processes are not well understood and are the focus of the project. Dissociated NF3 and NH3 were used as an alternative and XPS is the technique to analyze the reactions of atomic fluorine and nitrogen with the oxide on the surface. A thermal cracker was used to dissociate the NF3 and NH3 into NFx+F and NHx+H. There was a formation of a NiF2 layer on top of the oxide and there was no evidence of nitrogen on the surface indicating that the fluorine and hydrogen are the reacting species. XPS spectra, however, indicate that the substrate SiO2 layer is not removed by the dissociated NF3 and NiF2 growth process. The NiF2 over layer can be reduced to metallic Ni by reacting with dissociated NH3 at room temperature. The atomic hydrogen from dissociated ammonia reduces the NiF2 but it was determined that the atomic hydrogen from the ammonia does not react with SiO2. digital.library.unt.edu/ark:/67531/metadc28421/
Political Identity of First-Year College Students: An Analysis of Student Characteristics Using Cooperative Institutional Research Program (CIRP) Data
This quantitative study utilized secondary self-reported data from the 2008 administration of the Cooperative Institutional Research Program (CIRP) Freshman Survey from two Texas public universities to investigate the pre-college demographic, academic, attitude, behavioral, and familial factors that may relate to students' self-reported political identities. The study design was correlational regarding the relationship of the demographic, academic, attitude, behavioral, and familial independent variables to the dependent variable of the students' political identities. ANOVA main effects for the independent variables were calculated, and statistical significance required the p < .05 level. The statistically significant demographic factors were native English-speaking status; enrollment status; citizenship status; religious preference; and race. The statistically significant academic factor was intended major. The statistically significant attitude factors were opinions regarding social issues such as criminal rights; abortion rights; the death penalty; the legalization of marijuana; homosexual relationships and same-sex marriage; racial discrimination; income taxes; affirmative action; military spending and voluntary military service; gun control; the environment; national health care; immigration; personal success; political dissent; and free speech. Other statistically significant attitude factors related to personal goals of making artistic and scientific contributions; being politically influential and politically knowledgeable; raising a family; participating in environmental programs and community action programs; developing a life purpose; promoting racial understanding; and promoting cultural understanding. The statistically significant behavioral factors were the frequency with which students participated in activities such as attending religious services; smoking; feeling overwhelmed or depressed; playing a musical instrument; discussing politics; and being involved in political campaigns. Other statistically significant behavioral factors were the frequency with which students participated in critical thinking activities such as using logical arguments to support their opinions; seeking alternative solutions to problems; researching scientific articles; exploring topics of personal interest; and accepting mistakes. The statistically significant familial factors were the religious preferences of the students' fathers and mothers. The results can give insight into the political characteristics of the students with whom student affairs professionals work. They can be used to inform the planning and implementation of educational programs that aid in students' political identity development. digital.library.unt.edu/ark:/67531/metadc28457/
Virulence Factor Production in PyrE Mutants of Pseudomonas Aeruginosa
It has been shown previously in our lab that mutations in the pyrimidine pathway reduced the ability of Pseudomonas aeruginosa to produce virulence factors. Knockout mutations in pyrB, pyrC and pyrD genes of the pyrimidine pathway showed that virulence factor production was decreased. Pyoverdin, pyocyanin, hemolysin, iron chelation, motility, and adherence are all considered virulence factors. Here I further investigate the effects of mutations in the pyrimidine pathway by studying a pyrE mutant. I studied the effect of the pyrE mutation on the production of the above virulence factors. Just like the effect of pyrB, pyrC and pyrD mutations,the pyrE mutation also showed that the bacteria were deficient in producing virulence factors when compared to the wild type. The broader impact of this research would be the possibility of finding drugs that could treat patients infected with P. aeruginosa and possibly extend the lives of chronically infected patients with cystic fibrosis. digital.library.unt.edu/ark:/67531/metadc28458/
The Determinants and Consequences of Empathic Parenting: Testing an Expansion of Belsky's Model of Parenting Using SEM
An understanding of factors that enhance empathic parenting behaviors is of considerable importance to the study of child development and to the development of parenting interventions to promote child adjustment. Moreover, gaining a better understanding of the factors that predict empathic parenting with older children is of interest since most research examining parental empathy focuses on infants. These were the goals of the current study. Guided by Belsky's 1984 process model of the determinants of parenting that impact child development, an expanded model of the determinants of parenting is proposed that includes various parent, child, and contextual factors of influence. Using data from a community sample, a partial least squares path analysis approach was employed to test the model's strength in predicting empathically attuned parenting with children ages 5 to 10 years and, ultimately, the child's psychoemotional functioning. Results support the expanded model; however, a reduced model was found to be superior and revealed unique relationships between the determinants of parenting. Specifically, a parent's psychoemotional functioning and childrearing beliefs and attitudes were found to be critical to the parent's ability to engage in empathic parenting behaviors. Other parent factors such as the parent's developmental history of abuse, maladaptive personality traits, and age, along with contextual factors and child characteristics, were found to influence parenting only indirectly through their impact on the parent's level of psychoemotional distress or childrearing beliefs and attitudes. Ultimately, the current findings support Belsky's claim that parent factors are the strongest predictors of empathic parenting. Implications of these findings are many. The results highlight the importance of assessing a parent's childrearing beliefs and attitudes and level of distress in conjunction with characteristics of the child when a family comes in for treatment. Moreover, the results identify many points of intervention to stopping the cycle of abuse. digital.library.unt.edu/ark:/67531/metadc28454/
A Comparative Analysis of the 1915 and 1919 Versions of Symphony No. 5 in E-flat Major, op. 82 by Jean Sibelius
The initial composition of the Fifth Symphony in E-flat Major, Op. 82 was undertaken as a commission to celebrate the composer's fiftieth birthday. Unhappy with the initial efforts, two revisions were then performed; the first was in 1916 and the final revision in 1919. Despite the larger form of the work seeming to have been changed between the 1915 and 1919 versions, the smaller gestures of thematic expression in both versions remained similar. On the surface, it had appeared that the composer had eliminated a movement, changing the 1919 version into a three movement form. This view was not challenged by the composer at the time, and since the earlier versions had either been withdrawn or destroyed, there was no way to compare the original efforts to the final product until recently. In comparing the 1919 version to the original, a definite strong parallel can be seen between the two - despite the changes to form, rearrangement of melodic material, and the seemingly different number of movements. However, the parallel is enough that the 1915 version can be a guide to classifying the 1919 version, an act that has eluded many scholars since the 1920s. Most importantly, comparing the two versions shows that the 1919 version is not a three movement form at all; it is a four movement form that is obscured by the connection of the first and second movements by a thematic bridge that contains elements from both movements, but is not placed within either structure. digital.library.unt.edu/ark:/67531/metadc28459/
The Effects of Jackpots on Responding and Choice in Two Domestic Dogs
The current study investigated the impact of delivering a jackpot on response rate and response allocation in two domestic dogs. For the purpose of this research, a jackpot was defined as a one-time, within-session increase in the magnitude of reinforcement. Two experiments were conducted to investigate the effects of delivering a jackpot in both single-operant and concurrent schedule procedures. Experiment 1 investigated the impact of a one-time, within-session increase in the magnitude of reinforcement on response rate in a single-operant procedure. Results of Experiment 1 showed no clear change in response rate after the delivery of the jackpot. Experiment 2 investigated the impact of a one-time, within-session increase in the magnitude of reinforcement on response allocation in a concurrent schedule procedure. Results of Experiment 2 showed an increase in response allocation to the jackpotted contingency in both subjects. These results suggest that a jackpot, as defined here, has no effect in single-operant procedures while having an effect in concurrent schedule procedures. These effects are similar to those reported in the magnitude of reinforcement literature. digital.library.unt.edu/ark:/67531/metadc28456/
Breaking accidental behavior chains.
Accidental behavior chains are a common problem in dog training. Many handlers inadvertently reinforce undesirable behaviors. The behavior analytic literature already contains articles describing methods of breaking chains; however, those methods either are not used in dog training for practical purposes or are ineffective in dog training. This experiment investigated two ways to break a behavior chain, including extending the chain and introducing a delay into the chain. The results of extending the chain showed that it is possible to decrease the target behavior using this method, but it was not eliminated in this study. Adding a delay into the behavior chain resulted in a quick elimination of the target behavior. digital.library.unt.edu/ark:/67531/metadc28453/
Maleic anhydride grafted polypropylene coatings on steel: Adhesion and wear.
Polymeric coatings are being used in a growing number of applications, contributing to protection against weather conditions and localized corrosion, reducing the friction and erosion wear on the substrate. In this study, various polypropylene (PP) coatings were applied onto steel substrates by compression molding. Chemical modification of PP has been performed to increase its adhesion to metallic surfaces by grafting of maleic anhydride (MAH) onto PP in the presence of dicumyl peroxide (DCP). Influence of different concentrations of MAH and DCP on the properties of resulting materials have been examined. The coated steel samples are characterized by scanning electron microscopy (SEM), shear adhesion testing, FTIR and tribometry. The coatings with 3 wt. % MAH have shown the maximum adhesion strength due to maximum amount of grafting. The wear rates increased with increasing the amount of MAH due to simultaneous increase in un-reacted MAH. digital.library.unt.edu/ark:/67531/metadc28452/
An Assessment of Undergraduate Course Syllabi in the Departments of English at Universities in Taiwan
This exploratory, qualitative research explored the extent that course syllabi in the Departments of English in 13 public and 9 private universities in Taiwan reflect the inclusion of syllabus components to promote learning as recommended in the literature in the United States. Research questions included: what components can be inferred from the literature in the U.S. for the recommended components of a course syllabus, for the components for a learning-centered syllabus, and for a model to analyze Bloom's cognitive level of learning? And when these are applied to analyze course syllabi in English courses, are syllabi in these universities congruent with the models? The research identified and analyzed 235 course syllabi from the core courses listed online at these universities. The findings indicated that these syllabi are highly congruent with the syllabus components template; 68% of the syllabi included seven or more of the ten components. Additionally, these syllabi reflect medium congruency with the learning-centered syllabus template. Verbs used in objectives and learning outcomes in different English courses indicate different levels of cognitive learning goals as identified by Bloom's cognitive domain. Additional findings indicate that there was no difference in inclusion of components based on where faculty earned their doctoral degree. This research assumed similarities between higher education in Taiwan and the U.S., conclusions indicate that the course syllabi in Departments of English in Taiwan are congruent with the models recommended in the literature in the U.S. digital.library.unt.edu/ark:/67531/metadc28451/
A Performer's Analysis of Dominick Argento's Miss Havisham's Wedding Night
Dominick Argento's Miss Havisham's Wedding Night is the least explored of his artistic output. A monodrama in one act for soprano, Miss Havisham's Wedding Night contains some of Argento's most beautiful and challenging music of his compositional output. The purpose of a detailed analysis of the structure and content of Argento's Miss Havisham's Wedding Night is to facilitate the solo vocal performer's interpretation. Argento's setting of Miss Havisham's Wedding Night is unique in that he musically translates the manic psychological state of the literary character. Argento structured the one act opera in such a manner that the music would illuminate the text and the audience might connect with the unstable psychological episodes and outbursts demonstrated by Miss Havisham. To that end, each section and phrase has its own psychological motivation, which in turn demands a varied musical and dramatic interpretation. Utilizing selected scenes from Miss Havisham's Wedding Night, the researcher will analyze Argento's musical manifestation of Dickens's literary work. This research will include an investigation into the manner in which Argento uses the shape of melody and the musical phrase along with the harmonic materials to enhance the text and dramatic content. The author will explore the musical nuances Argento incorporates in an effort to develop and portray Miss Havisham's psychological state. Through an analysis of the orchestral writing the author will show how Argento's aesthetic balance between the music and text represents the emotional and psychological implications of the monodrama. digital.library.unt.edu/ark:/67531/metadc28455/
Optimal design of Dutch auctions with discrete bid levels.
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The theory of auction has become an active research area spanning multiple disciplines such as economics, finance, marketing and management science. But a close examination of it reveals that most of the existing studies deal with ascending (i.e., English) auctions in which it is assumed that the bid increments are continuous. There is a clear lack of research on optimal descending (i.e., Dutch) auction design with discrete bid levels. This dissertation aims to fill this void by considering single-unit, open-bid, first price Dutch auctions in which the bid levels are restricted to a finite set of values, the number of bidders may be certain or uncertain, and a secret reserve price may be present or absent. These types of auctions are most attractive for selling products that are perishable (e.g., flowers) or whose value decreases with time (e.g., air flight seats and concert tickets) (Carare and Rothkopf, 2005). I began by conducting a comprehensive survey of the current literature to identify the key dimensions of an auction model. I then zeroed in on the particular combination of parameters that characterize the Dutch auctions of interest. As a significant departure from the traditional methods employed by applied economists and game theorists, a novel approach is taken by formulating the auctioning problem as a constrained mathematical program and applying standard nonlinear optimization techniques to solve it. In each of the basic Dutch auction model and its two extensions, interesting properties possessed by the optimal bid levels and the auctioneer's maximum expected revenue are uncovered. Numerical examples are provided to illustrate the major propositions where appropriate. The superiority of the optimal strategy recommended in this study over two commonly-used heuristic procedures for setting bid levels is also demonstrated both theoretically and empirically. Finally, economic as well as managerial implications of the findings reported in this dissertation research are discussed. digital.library.unt.edu/ark:/67531/metadc28450/
Identification of highly gifted 5- and 6-year-old children: Measures to predict academic achievement.
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Studies indicate the educational needs of highly gifted students are best met through accelerated learning. It is difficult to recognize very young children that are suited for an accelerated curriculum because younger students frequently lack school records or portfolios used to identify gifted students. This study examined the accuracy of cognitive ability and achievement tests in predicting academic achievement by the end of second grade, correlating test results and final grade averages collected from sixteen children ages five to six who entered a public school program for high-ability learners in kindergarten. A multiple regression analysis indicated the Wechsler Preschool and Primary Scale of Intelligence produced the highest mean IQ score and a strong correlation with reading achievement. The Wechsler Individual Achievement Test contributed in small part to the prediction of academic achievement. The Naglieri Nonverbal Ability Test and the Kaufman Brief Intelligence Test-Second Edition had negative correlations with final grade averages, indicating they are not predictors of academic achievement for these students. digital.library.unt.edu/ark:/67531/metadc28471/
An Analysis of Interrater Agreement Between the Motivation Assessment Scale (MAS), Questions About Behavioral Function (QABF), and Analog Assessment Outcomes
An analysis of interrater agreement across multiple respondents on anecdotal assessments was compared with experimental functional analysis outcomes for correspondence. Experiment 1 evaluated the agreement of multiple respondents on the function of problem behavior for 22 individuals across 42 target behaviors using the Motivation Assessment Scale (MAS) and the Questions About Behavioral Function (QABF). Results showed agreement on the primary maintaining consequence for 4 or 5 of the 5 respondents in 52% (22/42) of the individual's target behaviors with the MAS and 57% (24/42) with the QABF. Experiment 2 examined whether correspondence occurred between the anecdotal assessment results and experimental functional analysis (EFA) results for 7 individuals selected from Experiment 1. Correspondence between the QABF assessment and the EFA was found for 6 of 7 participants, and 4 of the 7 showed correspondence between the EFA and the MAS. This study showed that the QABF had higher correspondence with analog assessments than the MAS thus, supporting the previous findings of Paclawskyj et al. (2001). digital.library.unt.edu/ark:/67531/metadc28477/
Daughters of the King and Founders of a Nation: Les Filles du Roi in New France
The late seventeenth century was a crucial era in establishing territorial claims on the North American continent. In order to strengthen France's hold on the Quebec colony, Louis XIV sent 770 women across the Atlantic at royal expense in order to populate New France. Since that time, these women known as the filles du roi, have often been reduced to a footnote in history books, or else mistakenly slandered as women of questionable morals. This work seeks to clearly identify the filles du roi through a study of their socioeconomic status, educational background, and various demographic factors, and compare the living conditions they had in France with those that awaited them in Canada. The aim of this undertaking is to better understand these pioneer women and their reasons for leaving France, as well as to identify the lasting contributions they made to French-Canadian culture and society. digital.library.unt.edu/ark:/67531/metadc28470/
Examining the Origins of Sociology: Continuities and Divergences Between Ibn Khaldun, Giambattista Vico, August Comte, Ludwig Gumplowicz, and Emile Durkheim
This thesis examines the extent to which Ibn Khaldun can legitimately be considered a founding father of sociology. To pursue this research, Khaldun's theoretical framework will be compared with four Western scholars: Auguste Comte, Emile Durkheim, Giambattista Vico, and Ludwig Gumplowicz. This paper begins with an Introduction (Chapter I), followed by a general overview of Khaldun's work (Chapter II). Next, Khaldun's work is compared to that of Auguste Comte (Chapter III), Emile Durkheim (Chapter IV), Ludwig Gumplowicz (Chapter V) and Giambattista Vico (Chapter VI). In each of these chapters, Khaldun is compared and contrasted to the other social theorist, illustrating their similarities and considering their differences. Finally, in Chapter VII, I put forth conclusions that consider the extent to which Khaldun can validly be considered a founding father of sociology. digital.library.unt.edu/ark:/67531/metadc28478/
The Legacy of Theodore Leschetizky as Seen through His Pedagogical Repertoire and Teaching Style
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Theodore Leschetizky's singular pianistic legacy survives to this day because of his revolutionary pedagogical methods and his compositions for the piano repertory. The amalgamation of these two aspects formed his distinctive contributions to the fields of piano and piano pedagogy and left an indelible mark on the history of the instrument. His students lead an impressive list of the greatest artists of the previous century, each influencing the evolution of pianism with their own remarkable style and personality. While Leschetizky was arguably without peer as a pedagogue, many pianists today are unaware of the vast number of compositions that he wrote. These pieces were intended not only for the concert stage, but also as a very specific pedagogical repertoire that he used within his own teaching studio. This repertoire comprises a vital component of the Leschetizky legacy, albeit one which is often slighted in comparison. It is imperative that the pianists of our current generation understand the dual aspects of his contribution to our art form, in order to fully grasp the way in which he has changed the face of pianism. The purpose of this dissertation and lecture recital is to enumerate the various aspects that constitute the dual components of Leschetizky's pianistic legacy. For pedagogues of the current generation, it is of vital importance that we understand not only our own personal pedagogical lineage, but the various other individuals that, through their contributions, have led us to where we are in our understanding of the instrument. What is needed in the current research on this subject is one individual source that not only documents the characteristics of a pedagogical genius, but explores the legacy he left for future generations through documented accounts of his students and the examination of his own unfamiliar, pedagogical repertoire for the piano. digital.library.unt.edu/ark:/67531/metadc28474/
A Study of Student's Perceptions of Blended Learning Environments at a State-Supported Postsecondary Institution
The purpose of this study was to conduct exploratory research regarding students' perceptions of blended learning environments at a state supported postsecondary institution. Specifically investigated were students' overall perceptions of blended learning environments, the reasons they chose to take a blended course, and whether generational differences existed in students' affected perceptions. An electronic survey was distributed to students enrolled in blended learning courses at the end of the spring 2009 term. digital.library.unt.edu/ark:/67531/metadc28475/
161 Glass: Site Specific Music in an Artistic Context
The composition 161 Glass is a 17-minute musical work with percussion, wind and brass instruments in which the intersection of mid-century architecture, and the art and culture of a dynamic city are inextricably linked. Through this paper, I explore the process of composing a musical work in relationship to the significance of site specific context. The paper begins by defining the concept of site specific art works; then reviews the discourse of the intersection of art, music and architecture. I then delve into the cultural and geographic context surrounding this project from the modern era through the present, and how those perspectives apply to the building and my piece. I reveal how the composition relates the musical ideas to the site. Finally, I describe the collaborative process between myself, the musicians and the Dallas Contemporary staff. digital.library.unt.edu/ark:/67531/metadc28472/
Retirees' Attitudes Toward Mental Illness Treatment: A Life-Course Perspective
This purpose of this dissertation was to examine the attitudes of retirees toward mental illness treatment. Secondary data from the Survey Research Center at the University of North Texas was utilized for this study. The focus was on the influence that gender, income, education, race/ethnicity, personal experience, fear, goodwill, and social control might have had on retirees' attitudes toward mental illness treatment. An n = 225 was selected out of the existing data to serve as the sample population. Binary logistic regression was utilized to analyze the data. Results indicated that the obtained significant findings were consistent with existing literature. digital.library.unt.edu/ark:/67531/metadc28479/
Determining Factors that Influence High School Principal Turnover Over a Five Year Period
The purpose of this study was to determine the effects of salary, compensation and benefits, accountability, job stress, increased instructional responsibilities, changes in student demographics, lack of support, politics, advancement opportunities and promotion on tenure and turnover among high school principals in the state of Texas. The participants in the study included 60 Texas high school principals who left a high school principalship for a different high school principalship within the past 5 years. The participants completed the Texas Principal Survey and data were analyzed using binary logistic regression. The data indicated that salary, compensation and benefits was a significant factor in predicting an increase in the odds of principal turnover for principals who had been in their prior principalship 5 or more years over principals who had been in their prior principalship less than 5 years. Additionally, advancement opportunities was a significant factor in predicting a decrease in the odds of principal turnover for principals who had been in their prior principalship 5 or more years over principals who had been in their prior principalship less than 5 years. Responses from an open ended question asking principals why they left their prior principalship suggested that principals left for reasons including new challenges, lack of support and family. The results of this study support the need for continued research in the area of principal turnover and provide insight to district superintendents, school boards and principals. digital.library.unt.edu/ark:/67531/metadc28476/
Microwave-Assisted Synthesis, Characterization, and Photophysical Properties of New Rhenium(I) Pyrazolyl-Triazine Complexes
The reaction of the chelating ligand 4-[4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazin-2-yl]-N,N-diethyl-benzenamine, L, with pentacarbonylchlororhenium by conventional heating method produces the complexes fac-[ReL(CO)3Cl2] and fac-[Re2L(CO)6Cl2] in a period of 48 hours. The use of microwaves as the source of heat and the increase in the equivalents of one of the reactants leads to a more selective reaction and also decreases the reaction time to 1 hour. After proper purification, the photophysical properties of fac-[ReL(CO)3Cl] were analyzed. The solid-state photoluminescence analysis showed an emission band at 628 nm independent of temperature. However, in the solution studies, the emission band shifted from 550 nm in frozen media to 610 nm when the matrix became fluid. These results confirm that this complex possess a phenomenon known as rigidochromism. digital.library.unt.edu/ark:/67531/metadc28473/
X, An Analytical Approach to John Chowning's Phoné
The analysis of computer music presents new challenges to the field of music theory. This study examines the fixed media composition Phoné by John Chowning from its aesthetic perspective, compositional theory and computer sound synthesis techniques. Fast Fourier Transform analyses are used to create spectrograms. The findings from the spectrograms are juxtaposed with compositional philosophies of John Chowning, Jean-Claude Risset, Pierre Schaeffer and Arnold Schoenberg and the techniques are represented via PureData patches. digital.library.unt.edu/ark:/67531/metadc28445/
Three Topics in Descriptive Set Theory
This dissertation deals with three topics in descriptive set theory. First, the order topology is a natural topology on ordinals. In Chapter 2, a complete classification of order topologies on ordinals up to Borel isomorphism is given, answering a question of Benedikt Löwe. Second, a map between separable metrizable spaces X and Y preserves complete metrizability if Y is completely metrizable whenever X is; the map is resolvable if the image of every open (closed) set in X is resolvable in Y. In Chapter 3, it is proven that resolvable maps preserve complete metrizability, generalizing results of Sierpi&#324;ski, Vainštein, and Ostrovsky. Third, an equivalence relation on a Polish space has the Laczkovich-Komjáth property if the following holds: for every sequence of analytic sets such that the limit superior along any infinite set of indices meets uncountably many equivalence classes, there is an infinite subsequence such that the intersection of these sets contains a perfect set of pairwise inequivalent elements. In Chapter 4, it is shown that every coanalytic equivalence relation has the Laczkovich-Komjáth property, extending a theorem of Balcerzak and G&#322;&#261;b. digital.library.unt.edu/ark:/67531/metadc28441/
Adaptive Advantages of Carotenoid Pigments in Alpine and Subalpine Copepod Responses to Polycyclic Aromatic Hydrocarbon Induced Phototoxicity
Alpine zooplankton are exposed to a variety of stressors in their natural environment including ultraviolet radiation. Physiological coping mechanisms such as the accumulation of photoprotective compounds provide these zooplankton protection from many of these stressors. Elevated levels of carotenoid compounds such as astaxanthin have been shown to help zooplankton survive longer when exposed to ultraviolet radiation presumably due to the strong antioxidant properties of carotenoid compounds. This antioxidant capacity is important because it may ameliorate natural and anthropogenic stressor-induced oxidative stress. While previous researchers have shown carotenoid compounds impart increased resistance to ultraviolet radiation in populations of zooplankton, little work has focused on the toxicological implications of PAH induced phototoxicity on zooplankton containing high levels of carotenoid compounds. This thesis discusses research studying the role that carotenoid compounds play in reducing PAH induced phototoxicity. By sampling different lakes at elevations ranging from 9,500' to 12,700' in the front range of the Colorado Rocky Mountains, copepod populations containing different levels of carotenoid compounds were obtained. These populations were then challenged with fluoranthene and ultraviolet radiation. Results discussed include differences in survival and levels of lipid peroxidation among populations exhibiting different levels of carotenoid compounds, and the toxicological and ecological implications of these results. digital.library.unt.edu/ark:/67531/metadc28444/
Teaching Points in Comparing the Great Depression to the 2008-2009 Recession in the United States
For an introductory macroeconomics course, the discussion of historical relevance helps foster important learning connections. By comparing the Great Depression to the 2008-2009 recession, a macroeconomics instructor can provide students with connections to history. This paper discusses the major causes of each recession, major fiscal policy and monetary policy decisions of both recessions, and the respective relevance in teaching the relationship of each policy to gross domestic product. The teaching points addressed in this paper are directed towards an introductory college-level macroeconomics course, incorporating a variety of theories from historical and economic writers and data from government and central bank sources. A lesson plan is included in an appendix to assist the instructor in implementing the material. digital.library.unt.edu/ark:/67531/metadc28442/
The Khan Variations for Solo Marimba by Alejandro Viñao: Musical Analysis and Performance Practice.
The Khan Variations is the first work for solo marimba by Argentinean composer Alejandro Viñao (b.1951). Since publication in 2001, Khan Variations has been performed at many international percussion festivals and is often a repertoire choice for performers in the final round of numerous marimba competitions. This thesis and accompanying lecture recital provide a supplemental guide to Alejandro Viñao's Khan Variations, focusing on analytical and structural theory, as well as performance practice, thus filling the void of information on this piece in the percussion community. Khan Variations was jointly commissioned by twelve of the world's prominent marimba performers and educators, including: Michael Burritt, Jack Van Geem, William Moersch, Robert Van Sice, and Nancy Zeltsman. The project organizer of the Khan Variations commission was Nancy Zeltsman, Chair of the Percussion Department at the Boston Conservatory and a leader in the field of commissioning new marimba works. Utilizing William Moersch's organization New Music Marimba as the financial conduit, Zeltsman and her group issued this commission in 1999. Alejandro Viñao studied composition with the Russian composer Jacobo Ficher in Buenos Aires, and Viñao later went on to complete his doctorate in composition from City University in London. His works span the genres of opera, choir, orchestra, electroacoustic chamber music, and more than twenty film scores. Viñao's composing style is influenced by Mexican-American composer Conlon Nancarrow and Islamic religious music known as Qawwali. Alejandro Viñao's works typically contain complex rhythmic structures and use rhythm as the main element for musical form and development. The impetus for this thesis is to provide a musical analysis and performance guide for The Khan Variations by Alejandro Viñao. This thesis also illuminates the significance of the joint commission led by Nancy Zeltsman, and highlights the influences and inspirations of Alejandro Viñao as a rising composer of international renown. digital.library.unt.edu/ark:/67531/metadc28467/
Love Poem with Exiles
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Love Poem with Exiles is a collection of poems with a critical preface. The poems are varied in terms of subject matter and form. In the critical preface, I discuss my relationship with poetry as well as the idea that we inherit poems, and that if we are inspired by them, we can transform them into something new. digital.library.unt.edu/ark:/67531/metadc28465/
Computational Study of Small Molecule Activation via Low-Coordinate Late First-Row Transition Metal Complexes
Methane and dinitrogen are abundant precursors to numerous valuable chemicals such as methanol and ammonia, respectively. However, given the robustness of these substrates, catalytically circumventing the high temperatures and pressures required for such transformations has been a challenging task for chemists. In this work, computational studies of various transition metal catalysts for methane C-H activation and N2 activation have been carried out. For methane C-H activation, catalysts of the form LnM=E are studied, where Ln is the supporting ligand (dihydrophosphinoethane or &#946;-diketiminate), E the activating ligand (O, NCH3, NCF3) at which C-H activation takes place, and M the late transition metal (Fe,Co,Ni,Cu). A hydrogen atom abstraction (HAA) / radical rebound (RR) mechanism is assumed for methane functionalization (CH4 à CH3EH). Since the best energetics are found for (&#946;-diket)Ni=O and (&#946;-diket)Cu=O catalysts, with or without CF3 substituents around the supporting ligand periphery, complete methane-to-methanol cycles were studied for such systems, for which N2O was used as oxygen atom transfer (OAT) reagent. Both monometallic and bimetallic OAT pathways are addressed. Monometallic Fe-N2 complexes of various supporting ligands (LnFe-N2) are studied at the beginning of the N2 activation chapter, where the effect of ligand on N2 activation in end-on vs. side-on N2 isomers is discussed. For (&#946;-diket)Fe-N2 complexes, the additional influence of diketiminate donor atom (N(H) vs. S) is briefly addressed. The remainder of the chapter expands upon the treatment of &#946;-diketiminate complexes. First, the activation and relative stabilities of side-bound and end-bound N2 isomers in monometallic ((&#946;-diket)M-N2) and bimetallic ((&#946;-diket)M-N2-M(&#946;-diket)) first row transition metal complexes are addressed. Second, the thermodynamics of H/H+/H- addition to (&#946;-diket)Fe-bound N2, followed by subsequent H additions up to release of ammonia, is discussed, for which two mechanisms (distal and alternating) are considered. Finally, the chapter concludes with partial distal and alternating mechanisms for H addition to N2 in bimetallic (&#946;-diket)Fe-N2-Fe(&#946;-diket) and (&#946;-diket)M-N2-M(&#946;-diket) (M = Ti,V,Fe), respectively. digital.library.unt.edu/ark:/67531/metadc28462/
The Characteristics of a Community of Practice in a National Writing Project Invitational Summer Institute
This qualitative naturalistic descriptive case study provides an understanding of the characteristics of a community of practice within a National Writing Project Invitational Summer Institute. This study utilized naturalistic, descriptive case study methodology to answer the research question: What characteristics of a community of practice are revealed by the perceptions and experiences of the fellows of a National Writing Project Invitational Summer Institute? Data were gathered in the form of interviews, focus group, observations, field notes, and participant reflective pieces. Peer debriefing, triangulation, thick rich description, as well as member checking served to establish credibility and trustworthiness in the study. Bracketing, a phenomenological process of reflecting on one's own experiences of the phenomenon under investigation was utilized as well. The findings of this study point to five analytic themes. These themes, ownership and autonomy, asset-based environment, relationships, socially constructed knowledge and practices, and experiential learning, intertwine to illuminate the three essential components which must be present for a community of practice to exist: joint enterprise, mutual engagement, and shared repertoire. Participants' portraits provide a description of their unique experiences as they moved fluidly between the periphery and core of the community of practice. digital.library.unt.edu/ark:/67531/metadc28461/
Making the Connection: How Mentors Choose Protégés in Academic Mentoring Relationships
Among other things, mentoring research is concerned with how mentors go about the process of choosing who they should mentor. Even when mentoring relationships are assigned, mentors need to feel that the efforts they are putting forth are worth the time and energy. What protégé attributes best attract the attention of a mentor? What mentor attributes make some protégés more attractive to them than others? This study looks at 3 explanations for mentor-protégé attraction, shedding light on the mental processes that influence why some protégés find it easy to get mentors and why some have a much tougher time finding the right person to mentor them. Practical and theoretical implications of this study are included. digital.library.unt.edu/ark:/67531/metadc28469/
On Their Own: How Thirty-One Tribal Colleges Address Five Educational Concepts
This qualitative research, specifically a content analysis of 31 tribal colleges' mission statements and curricula, examined how the colleges' curricula aligned with the five educational concepts suggested in the colleges' mission statements. Cajete's (1994) seven foundations to indigenous thinking proved to be a major theoretical framework which provided a worldview for tribal learning. The study concluded that whereas the five educational concepts aligned between mission statements and curricula, the curricula emphasized culture, tribal community, and academic success at a greater level than mission statements indicated. Further, tribal colleges' curricula did not emphasize economic concepts as the mission statements indicated. A particular finding suggests that tribal colleges' are investing in environmental studies programs, thus increasing their intellectual capacity to protect their environmental interests while promoting indigenous thinking and community learning across all academic disciplines. Considerable implications include that an increase of American Indian environmental studies graduates may have a positive impact on environmental justice matters as well as the ability to promote new agricultural technologies. Additional implications include how mainstream universities will adapt to an increase of native students studying the sciences rather than liberal arts. digital.library.unt.edu/ark:/67531/metadc28466/
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