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Long Term Property Prediction of Polyethylene Nanocomposites
The amorphous fraction of semicrystalline polymers has long been thought to be a significant contributor to creep deformation. In polyethylene (PE) nanocomposites, the semicrystalline nature of the maleated PE compatibilizer leads to a limited ability to separate the role of the PE in the nanocomposite properties. This dissertation investigates blown films of linear low-density polyethylene (LLDPE) and its nanocomposites with montmorillonite-layered silicate (MLS). Addition of an amorphous ethylene propylene copolymer grafted maleic anhydride (amEP) was utilized to enhance the interaction between the PE and the MLS. The amorphous nature of the compatibilizer was used to differentiate the effect of the different components of the nanocomposites; namely the matrix, the filler, and the compatibilizer on the overall properties. Tensile test results of the nanocomposites indicate that the addition of amEP and MLS separately and together produces a synergistic effect on the mechanical properties of the neat PE Thermal transitions were analyzed using differential scanning calorimetry (DSC) to determine if the observed improvement in mechanical properties is related to changes in crystallinity. The effect of dispersion of the MLS in the matrix was investigated by using a combination of X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Mechanical measurements were correlated to the dispersion of the layered silicate particles in the matrix. The nonlinear time dependent creep of the material was analyzed by examining creep and recovery of the films with a Burger model and the Kohlrausch-Williams-Watts (KWW) relation. The effect of stress on the nonlinear behavior of the nanocomposites was investigated by analyzing creep-recovery at different stress levels. Stress-related creep constants and shift factors were determined for the material by using the Schapery nonlinear viscoelastic equation at room temperature. The effect of temperature on the tensile and creep properties of the nanocomposites was analyzed by examining tensile and creep-recovery behavior of the films at temperatures in the range of 25 to -100 oC. Within the measured temperature range, the materials showed a nonlinear temperature dependent response. The time-temperature superposition principle was successfully used to predict the long term behavior of LLDPE nanocomposites. digital.library.unt.edu/ark:/67531/metadc9738/
A Longitudinal Examination of Factors Associated with Custodial Grandparenting: A Test of Moderated Mediation
The purpose of this study was to explore the following relationships: (a) how moderating factors (gender, age, ethnicity, social support, marital status, reason for role assumption and number of grandchildren in the home) can influence the mediating role of resiliency, and (b) how resiliency may mediate the negative effects of raising grandchildren (role demands, life disruptions, and difficulties with grandchildren) on grandparent adjustment over time. Resiliency was hypothesized to have the greatest effect on custodial grandparents who experienced the most stress (i.e., older, single, Caucasian males lacking social support and raising more than one grandchild). Mediation was assessed using structural equation modeling. Results indicated resilience mediated the relationship between role assumptions (i.e., role demands and life disruptions) and grandparent adjustment; however, resilience did not mediate the relationship between grandchild characteristics and grandparent adjustment. Due to the small number of custodial grandfathers (n = 14), non-married grandparents (n = 29), non-Caucasian grandparents (n = 10), the small number of grandparents who assumed the custodial role for less ambiguous reasons (n = 24), and the number of custodial grandparents with more than one grandchild residing in the home (n = 29) participating within the study, hierarchical multiple regressions were only conducted to test for moderated mediation for perceived social support and the age of the grandparent. Results indicated resilience mediates the relationship between life disruption and grandparent well-being for younger custodial grandparents and for custodial grandparents with perceived high social support. digital.library.unt.edu/ark:/67531/metadc12167/
A Longitudinal Investigation of Different Exercise Modalities on Social Physique Anxiety
The current study examined if students' levels of social physique anxiety vary depending on the type of exercise setting they select. The study determined the degree to which social physique anxiety changed over the course of semester-long involvements in different exercise settings. digital.library.unt.edu/ark:/67531/metadc278207/
A Longitudinal Study of Graduation, Retention, and School Dropout for Students in Regular and Special Education
This study examined differences in retention, graduation, and dropout between students in grades 9-12 in special education and regular education in the state of Texas for school years 1992-93 through 1995-96. The purpose was to gather information regarding the possible adverse effects of increased academic standards and mandatory testing on students with disabilities. The results indicate that when compared to students in regular education, students with disabilities are significantly more likely to be retained and are not experiencing the same decline in dropout rates as regular students. There is no indication that students with disabilities have been adversely affected by school reform but the size of the school district may play a significant role in whether or not students with disabilities dropout of school. digital.library.unt.edu/ark:/67531/metadc279003/
A Longitudinal Study of Juvenile Facility Directors' Job Satisfaction Levels in the United States
This national study, focusing on job satisfaction within juvenile facility directors, was conducted by the means of a survey. The study is longitudinal in nature; the survey was conducted in 1995 and 2000. Other past studies have focused on line level employees, guards, and the juveniles, but few have concentrated on juvenile facility directors. Literature on directors is currently lacking, this continuous study will give a better ongoing perspective of their attitudes and beliefs. Findings from this particular study will help to address current concerns inside of the system, starting at the apex. The survey's goal is to correlate factors that have a direct impact on their job satisfaction. Results indicate that staff issues have a dramatic impact on a director's job satisfaction. digital.library.unt.edu/ark:/67531/metadc5344/
Longitudinal Study of Loneliness and Depression as Predictors of Health in Mid- to Later Life
The longitudinal relationship between loneliness and depression as predictors of chronic health conditions in middle-aged to older adults was investigated utilizing data collected by the Health and Retirement Study (HRS), a national representative longitudinal study of health, retirement, and aging, conducted by the Institute for Social Research (ISR) Survey Research Center (SRC) at the University of Michigan, funded by the National Institute on Aging and the Social Security Administration. The correlation between these loneliness and depression was moderate (r = .32 to r = 51). The single-item subjective self-report of loneliness was found to be an adequate measure of loneliness. A cross-lagged panel correlation and regression design was used to examine the longitudinal relationship between loneliness, depression, and chronic health conditions. A temporal precedence was indicated implying a causal relationship with depression leading to subsequent loneliness. The relationship between recurring loneliness and chronic health conditions was weak (r = .13). digital.library.unt.edu/ark:/67531/metadc6124/
A Longitudinal Study of Rape Attitude Correlates among College Men
Research has linked rape victim-blaming attitudes (VBAs) with gender role stereotyping, negative peer attitudes towards women, and acceptance of interpersonal violence. The current study analyzed longitudinal questionnaire data of college men (n=166) from White and Smith's (2001) study of college student victimization. Results indicate that VBAs can be conceptualized as either overt or covert, and that the covert VBA was more strongly correlated with alcohol use, sexualized peer attitudes, traditional gender stereotypes, need for sexual dominance, and perpetration of dating aggression. The covert VBA was also correlated with rape proclivity one year later, and partially mediated relationships between earlier variables and later rape proclivity. Additionally, endorsement of chivalry moderated the relationship between traditional gender stereotypes and the covert VBA, casting new perspective on the role of chivalry. Overall, results demonstrate the importance of targeting subtle expressions of VBAs in educational programs, and the need for longitudinal studies on rape attitude development. digital.library.unt.edu/ark:/67531/metadc5269/
Longitudinal Study of the Impact of Performance Appraisals in Organizations
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The purpose of this study was to determine the effectiveness of and the subjects' overall satisfaction with the implementation of an internally created performance appraisal system. The system was implemented at a major technology consulting firm in the US. The subjects of this study were manager level employees of the firm. An employee survey conducted annually at the firm included questions relating to the implementation of the performance appraisal system. Eight years of managers' responses to six key questions in the Career Development category were analyzed. Managers' perceptions of their contribution to the firm, their understanding of what career paths are available to them, their understanding of the requirements for promotion, as well as their overall satisfaction with the implementation of the performance appraisal system were captured by this survey. Trend analysis indicates that managers at the firm perceived their career path knowledge improved and their understanding of promotion criteria improved as a result of the implementation. Overall satisfaction with the implementation did not improve enough to site confidence in managers' perceptions for the period immediately after the implementation; managers' responses to the actual implementation were disagreeable to neutral. Managers did not feel their impact on the organization improved as a result of the implementation. digital.library.unt.edu/ark:/67531/metadc5222/
Longitudinal Study to Assess the Impact of Instructor-Based Training Versus Computer-Based Training on User Performance: A Field Experiment
The purpose of this study is to investigate the relationships between selected end-user training programs corporations provide to their employees and subsequent employee performance based on these opportunities. digital.library.unt.edu/ark:/67531/metadc278808/
Loose Id for Orchestra
Loose Id, scored for orchestra (piccolo, 2 flutes, 2 oboes, 2 clarinets in B-flat, B-flat contrabass clarinet, 2 bassoons, contrabassoon, 4 horns in F, 3 trumpets in B-flat, 2 trombones, 1 bass trombone, tuba, timpani, percussion (3 parts), violin I, violin II, viola, violoncello, and contrabass), is an abstract realization in sound of the energy of the Id. Unleashed, without the counterbalance of Ego or Superego, the Id generates unbridled instinctual energy, resulting in an orgiastic frenzy. Distinct from a state of dementia, this piece represents a thoroughly lucid and intentional rampage of self-indulgence. The accompanying essay examines the underlying structural principles of Loose Id, focusing on how they aid the creation of the overall experience of the piece. Particular attention is given to the concepts of linearity and nonlinearity and their roles in different levels of creative and listening processes. digital.library.unt.edu/ark:/67531/metadc278090/
Looting and Restitution During World War II: a Comparison Between the Soviet Union Trophy Commission and the Western Allies Monuments, Fine Arts, and Archives Commission
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From the earliest civilizations, victorious armies would loot defeated cities or nations. the practice evolved into art theft as a symbol of power. Cultural superiority confirmed a country or empire’s regime. Throughout history, the Greeks and Romans cultivated, Napoleon Bonaparte refined, and Adolf Hitler perfected the practice of plunder. As the tides of Second World War began to shift in favor of the Allied Powers, special commissions, established to locate the Germans’ hoards of treasure, discovered Nazi art repositories filled with art objects looted from throughout Europe. the Soviet Union Trophy Commission and the Western Allies Monuments, Fine Arts, and Archives Commission competed to discover Nazi war loot. the two organizations not only approached the subject of plunder as a treasure hunt, but the ideology motivating both commissions made uncovering the depositories first, a priority. the Soviet trophy brigades’ mission was to dismantle all items of financial worth and ship them eastward to help rebuild a devastated Soviet economy. the Soviet Union wished for the re-compensation of cultural valuables destroyed by the Nazis’ purification practices regarding “inferior” Slavic art and architecture; however, the defeated German nation did not have the ability to reimburse the Soviet State. the trophy brigades implemented a process of restitution in kind to make physical reparations through the confiscation of Nazi war loot. the Western Allies disagreed with the Soviet Union’s policy. the Monuments, Fine Arts, and Archives Commission endeavored to return artwork looted by the Germans to the rightful owners or surviving descendants. Historically, the Western perspective of the Soviet Union’s actions was that the trophy brigades looted the conquered German Reich; however, during the period of Glasnost and after the fall of the Soviet Union, personal memoirs and interviews of Soviet trophy brigade members and museum officials have become available, and the Soviet viewpoint better understood. By analyzing both organization’s principles and actions, historians can assume a new disposition. the trophy brigades and the MFAA worked to salvage Nazi war loot, but the two commissions took divergent approaches as to what should be done with the spoils of war. It must be appreciated that decisions made sixty-seven years ago were made by nations attempting to do what they deemed morally correct but the lack of communication behind each ideology has made Western nations stand in judgment of the Soviet Union’s response. digital.library.unt.edu/ark:/67531/metadc115187/
Lord Byron's Attitude Toward Napoleon
This thesis is significant for the knowledge it offers concerning the influence of Napoleon Bonaparte's personality and career upon the character and the work of Lord Byron. It is significant because of the light it throws on both Napoleon and the culture of Europe during his era. This study is significant in the insight it indirectly gives into the psychological phenomenon of hero-worship, to which it gives a more universal application through the medium of Byron's attitude toward Napoleon. digital.library.unt.edu/ark:/67531/metadc130488/
Lord Byron's Interest in British Politics
The purpose of this thesis is to examine the politics of Byron as they are related to his age. Necessarily, a part of this work will deal with ideas that are somewhat conjectural, largely because of the limitations of time and space as well as the lack of accurate information--particularly that which concerns Byron and the Whig circle. digital.library.unt.edu/ark:/67531/metadc108234/
Lord Byron's Self-Portrayal in Don Juan
The purpose of this thesis is not to divide and subdivide the various aspects of the personality of Lord Byron, but to record and comment upon what the poet had to say about himself. The work which most easily lends itself to this type of study is the masterpiece Don Juan. digital.library.unt.edu/ark:/67531/metadc130553/
Loss of Innocence
Loss of Innocence uses sculpture, two-dimensional imagery, and text to explore the moment when children lose their innocence or realize their mortality. In the introduction, I explain that there are many factors, such as age and personality, which determine how children will deal with traumatic events in their lives and the duration of time that must pass before they move past the event. Often, children will combine childhood fantasy with random facts to create their own satisfactory explanation of what has happened. In my problem in lieu of thesis, I discuss work that I created with these thoughts in mind. I explore how the sculpture, two-dimensional imagery, and text work together to convey the emotion of innocence lost. digital.library.unt.edu/ark:/67531/metadc3114/
Losses of Vitamin C Content During the Cooking of Summer Squash
The general food supply is usually the source of vitamin C for many people, and since squash is a common food in the popular diets of Texans and is so generally grown over the state, this study has a two-fold purpose: (1) to ascertain the amount of vitamin C in the two varieties of squash most commonly used as food in Texas, and (2) to determine the effect of various methods of cooking upon the vitamin C content of these two varieties of squash. digital.library.unt.edu/ark:/67531/metadc75346/
Louder and Stronger? The Role of Signaling and Receptivity in Democratic Breakdowns and Their Impact Upon Neighboring Regimes
The purpose of this thesis is to establish what specific forces influence whether or not a democratic setback within one nation will diffuse to peripheral states. Past studies devoted to this topic have largely suggested that diffusion essentially functions like a contagious disease, where the likelihood of "infection" is primarily based upon the level of interaction between states. This thesis however proposes that the interaction of the signal generated from a democratic state's collapse and the receptiveness of neighboring nations to this signal ultimately determines when and where diffusion will occur. In order to test the validity of this thesis' claims, the level of democracy within the neighboring states of all failed democratic governments spanning the years 1842-2002 are examined during the first years following such system breakdowns within a large-N quantitative research design. Ultimately this study leads to the conclusion that the interaction of signals and receptivity play a major role in the diffusion of democratic setbacks. digital.library.unt.edu/ark:/67531/metadc9757/
Louis Cahuzac's Clarinet Music: an Examination of Selected Works, with Three Recitals and a Solo Performance of Selected Works by Debussy, Reinecke, Bloch, Stravinsky, Mozart and Others
Louis Cahuzac was one of the most sought-after clarinetists in the first half of the twentieth century. He was also highly respected as a conductor, as a teacher, and as a composer of music for the clarinet. The selections performed and discussed in the lecture depict Cahuzac's use of simple compositional forms and procedures which blend the expressive capability of the clarinet with its technical potential. digital.library.unt.edu/ark:/67531/metadc278517/
Love and Death in the Fiction of J. D. Salinger
This thesis explores the themes love and death in the fiction writing of J. D. Salinger. digital.library.unt.edu/ark:/67531/metadc108168/
Love is the Answer: a Creative Thesis Production Combining Multi-Media and Oral Interpretation
The problem of this thesis in creative production is concerned with the use of multi-media in an oral interpretation program so as not to obscure the author's message. The production attempted to utilize literature chosen to represent a basic theme and present it with selected media so that a positive response is evoked from the audience. The study also attempts to show, through example, that a program of oral interpretation using multi-media can sustain audience interest for a full evening of entertainment. An attempt is also made to show that multi-media need not be in constant use, that some literature can best utilize the "subtractive theory" which intensifies the message by deleting a majority of media. digital.library.unt.edu/ark:/67531/metadc163983/
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/
Low Temperature Polymeric Precursor Derived Zinc Oxide Thin Films
Zinc oxide (ZnO) is a versatile environmentally benign II-VI direct wide band gap semiconductor with several technologically plausible applications such as transparent conducting oxide in flat panel and flexible displays. Hence, ZnO thin films have to be processed below the glass transition temperatures of polymeric substrates used in flexible displays. ZnO thin films were synthesized via aqueous polymeric precursor process by different metallic salt routes using ethylene glycol, glycerol, citric acid, and ethylene diamine tetraacetic acid (EDTA) as chelating agents. ZnO thin films, derived from ethylene glycol based polymeric precursor, exhibit flower-like morphology whereas thin films derived of other precursors illustrate crack free nanocrystalline films. ZnO thin films on sapphire substrates show an increase in preferential orientation along the (002) plane with increase in annealing temperature. The polymeric precursors have also been used in fabricating maskless patterned ZnO thin films in a single step using the commercial Maskless Mesoscale Materials Deposition system. digital.library.unt.edu/ark:/67531/metadc5504/
Lowell Liebermann's Concerto No. 1 for Piano and Orchestra, Opus 12: An Historical and Analytical Study
Lowell Liebermann, born in New York City in 1961, is one of America's most distinguished living composers. In addition, he often conducts and performs as pianist in his own works. His musical language is unique and unmistakably rooted in the grand tradition of Western music; however, his style combines old and new, simple and complex, emotional and intellectual aspects. It combines tuneful, catchy melodies with a rich harmonic language, all framed by a strong formal design. This study begins with presenting primary information on this concerto excerpted from an interview with Lowell Liebermann. This interview served as a reference for subsequent sections, and a transcript of the interview is appended to the end of this study. In the third chapter, the musical language of the composer is discussed. Chapters four and five constitute the main body of this dissertation. The goal of these two chapters is to understand the basic three-pitch motive of the work, to demonstrate how it operates at various levels, and to see how the raw material corresponds at a larger structure level. It is the author's hope that this study will guide performers to better understand Liebermann's Concerto No. 1 for Piano and Orchestra, Opus 12. digital.library.unt.edu/ark:/67531/metadc30426/
Lowell's Opinion of His Contemporaries
This thesis examines the criticisms written by James Russell Lowell about his contemporaries. In addition, the author tries to record the reasons behind Lowell's opinions, when those reasons can be ascertained. digital.library.unt.edu/ark:/67531/metadc70326/
The Lower Rio Grande Valley: Are Education and Job Training Opportunities Shrinking the Labor Force?
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The purpose of this research project is to examine the educational and job-training opportunities offered in the Lower Rio Grande Valley, and how the skills acquired from these programs assimilate with the job opportunities available in the area. Specifically, we will look at the counties of Cameron, Hidalgo, Starr, and Willacy. The central hypothesis of this project is that the Rio Grande Valley in its efforts for a more highly trained workforce may actually be enabling its workforce to seek better employment opportunities in other areas. digital.library.unt.edu/ark:/67531/metadc2471/
Lowest of the Low: Scenes of Shame and Self-Deprecation in Contemporary Scottish Cinema
This thesis explores the factors leading to the images of self-deprecation and shame in contemporary Scottish film. It would seem that the causes of these reoccurring motifs may be because the Scottish people are unable to escape from their past and are uneasy about the future of the nation. There is an internal struggle for both Scottish men and women, who try to adhere to their predetermined roles in Scottish culture, but this role leads to violence, alcoholism, and shame. In addition, there is also a fear for the future of the nation that represented in films that feature a connection between children and the creation of life with the death of Scotland's past. This thesis will focus on films created under a recent boom in film production in Scotland beginning in 1994 till the present day. digital.library.unt.edu/ark:/67531/metadc9804/
The Lp Spaces of Equivalence Classes of Lebesgue Integrable Functions
The purpose of the paper is to prove that the Lp spaces, p ≥ 1, of equivalence classes of functions are Banach spaces. digital.library.unt.edu/ark:/67531/metadc131554/
Lucca in the Signoria of Paolo Guinigi, 1400-1430
This study analyzes the once great medieval Tuscan capital of Lucca's struggle for survival at the beginning of the fifteenth century. This was the age of the rise of regional states in Italy, and the expansionistic aims of Milan, Florence and others were a constant challenge to city-states such as Lucca which desired a political and cultural status quo. Yet, it was a challenge that was successfully met; unlike Pisa, Siena, Perugia, and various other major Tuscan cities, Lucca did not succumb to Milanese or Florentine aggression in the early Quattrocento. Why it did not is a major topic of discussion here. One of the means in which the Lucchese faced the new political and military realities of the time was the establishment of a monarchial system of government in the signoria of Paolo Guinigi (r. 1400-1430). The Guinigi Signoria was not characterized by the use of intimidation and violence, but rather by clientage, kinship and neighborhood bonds, marriage alliances, and the general consent of the people. Paolo garnered the consent of the people at first because his wealth allowed him to protect Lucca and its contado to a greater extent than would have been possible otherwise, and because of his family's long ties with the powerful Visconti of Milan; he held it later because he provided the city-state with capable leadership. This study extends the evidence of recent scholars that every Italian Renaissance city was unique based on its particular geography, alliances, civic wealth, and a number of other factors. Lucca in the period of Paolo Guinigi, a monarchy in the setting of one of the traditionally most republican cities of Italy, provides a most interesting example. “Civic humanism,” for example, has a decidedly different slant in Lucca than elsewhere, and is best exemplified in the figure of Giovanni Sercambi. This study also provides new perspectives from which to view Florence and Milan during the period of “crisis” at the beginning of the fifteenth century, and thus contributes to the mass of scholarship concerning the Baron thesis. digital.library.unt.edu/ark:/67531/metadc3134/
Luciano Berio's Sequenza III: The Use of Vocal Gesture and the Genre of the Mad Scene
Sequenza III was written in the mid -1960s and is widely available for study and performance, but how can this work be defined? Is it a series of sounds, or phonemes, or the anxious mutterings of a woman? Is it performance art or an operatic mad scene? Sequenza III could be all of these or something else entirely. Writing about my method of preparation will work to allay some of my own and other performer's fears about attempting this unusual repertory. Very little in this piece is actually performed on pitch, and even then the pitches are not definite. The intervals on the five-line staff are to be observed but the singer may choose to sing within her own vocal range. The notation that Berio has used is new and specific, but the emotional markings and dynamics drawn from these markings permit a variety of interpretive decisions by the performer. There is a very brief text and no actual melody, so where does one begin? As a composer, Berio was often responsive to external stimuli. Quotation of his earlier works and the works of others was a common tool of his technique. By comparing Sequenza III with other works by the same composer, I will delineate some borrowed features and techniques from his earlier music and from the areas of literature and visual art. Sequenza III, although available on several recordings, is still not performed very often outside the academic community. There is only a small body of scholarly literature about Luciano Berio. I hope to add to the knowledge about this recently deceased composer and his music, to create a comfort zone for singers in approaching this work, to understand the composer's intentions, and to provide a fair representation of his ideas in public performance. digital.library.unt.edu/ark:/67531/metadc4618/
Ludwig Erhard's German Neo-Liberalism
The purpose of this study was to determine the major causes of German revival as well as reasons for their radical changes from Postwar Socialism to the acceptance of a basically free market economy, and also to determine the effects of neo-liberalism on the rapid recovery. digital.library.unt.edu/ark:/67531/metadc130601/
Luigi Rossi: Early Baroque Italian Cantatas for the Modern Singer, with Modern Editions of Selected Works
The early baroque songs, or cantatas, of Luigi Rossi (1597-1653) are largely absent from the canon of standard Italian vocal repertory utilized by young singers and voice teachers today. In this document Rossi’s composition style is considered, along with modern edition trends, within the emerging genre of Italian early baroque song. Several of Luigi Rossi’s vocal works — chosen for their simplicity, brevity, dramatic content, and suitability for a young singer — are presented in modern transcriptions for voice and piano. The following document lays the groundwork for the inclusion of Luigi Rossi’s songs in the modern canon of Italian vocal music. Part I provides an introduction to Luigi Rossi and the considerations involved in creating modern editions of early baroque solo vocal music. In Chapter 1, Rossi’s patronage and compositional output are considered along with the reception and dissemination of his works in Italy and France. Chapter 2 of this study explores the historical context and lasting influence of Parisotti’s Arie Antiche, the larger collection from which the ubiquitous Schirmer edition, Twenty-four Italian Songs and Arias of the Seventeenth and Eighteenth Centuries, is drawn. One well-known song that appears in the Schirmer edition is Giulio Caccini’s Amarilli, mia bella. In an effort to illustrate trends in modern editions and performance practice, this song is traced from its first appearance in 1602 through representations in modern anthologies. Chapter 3 considers the practical concerns of modern editors of baroque vocal music – such as performance practice applications, ornamentation, and pedagogical considerations – with respect to the cantatas of Luigi Rossi. Chapter 4 discusses the three cantatas by Luigi Rossi that are presented in Part II as performance editions. digital.library.unt.edu/ark:/67531/metadc84209/
Luke's Mama
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A creative nonfiction thesis, Luke's Mama is a memoir of personal essays that explore how the birth of my son has affected the ways that I relate within and interpret different areas of my life. Chapter I, Introduction, identifies personal and ethical concerns involved in telling my story and explores how others have handled similar issues. Chapter II, Family, illustrates how my relationship with my family of origin has changed since I've become a parent and also how my new family and I interact with society. Chapter III, Calling, depicts my struggle in finding a balance between work and family priorities. Chapter IV, Partner, presents a contrast between my relationship with my partner before and after my son's birth. Chapter V, Parent, displays the beginning of my ever-growing relationship with my son and sense of parenthood. digital.library.unt.edu/ark:/67531/metadc2845/
Luminescence Resonance Energy Transfer-Based Modeling of Troponin in the Presence of Myosin and Troponin/Tropomyosin Defining Myosin Binding Target Zones in the Reconstituted Thin Filament
Mechanistic details on the regulation of striated muscle contraction still need to be determined, particularly the specific structural locations of the elements comprising the thick and thin filaments. Of special interest is the location of the regulatory component, troponin, on the actin filament and how its presence influences the behavior of myosin binding to the thin filament. In the present study: (1) Luminescence resonance energy transfer was used to monitor potential conformational changes in the reconstituted thin filament between the C-terminal region of troponin T and myosin subfragment 1; (2) Location of troponin in previously derived atomic models of the acto-myosin complex was mapped to visualize specific contacts; and (3) Shortened tropomyosin was engineered and protein binding and ATPase assays were performed to study the effect of myosin binding close to the troponin complex. Analysis of the results suggest the following: (1) Irrespective of calcium levels, the C-terminal region of troponin T is located close to myosin loop 3 and a few actin helices that may perturb strong acto-myosin interactions responsible for force production. (2) Atomic models indicate myosin subfragment 1 cannot attain the post- powerstroke state due to the full motion of the lever arm being sterically hindered by troponin. (3) A shortened tropomyosin with five actin binding modules (instead of the native seven in muscle cells) binds actin contiguously in a head-to-tail manner and serves to increase the periodicity of troponin complexes on the actin filament. Such behavior eliminates the structure of the actin filament being responsible for the binding location of tropomyosin. (4) Differential behavior of myosin subfragment 1 i.e. (a) binding adjacent to troponin and (b) binding further away from troponin, is apparent as tropomyosin and troponin appear to govern the regions or "target zones" where myosin can bind productively along the actin filament. Physiologically, myosins able to bind close to troponin, but not participate in force production may function as mechanical sensors to attenuate or dampen the force generated from the so-called "target zones". Therefore, this could be a pseudo-regulatory mechanism that functions to protect the contractile apparatus from damage. digital.library.unt.edu/ark:/67531/metadc9834/
A Lunchroom Study of Specific Elementary, Junior, and Senior High Schools in the City of Dallas
The present study was made without benefit of poster, films, bulletin board, or other teaching aids. It was undertaken to determine the nutritive values of the menus served, the foods selected by the plate lunches, and the amount of food wasted in two elementary, two junior high, and two senior high school lunch cafeterias in the City of Dallas during a six month period of time. digital.library.unt.edu/ark:/67531/metadc107829/
The Luxury of Tears: A Secondary Survivor's Story
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As the written accompaniment for The Luxury of Tears, a twelve-minute documentary video exploring the emotional impact of sexual assault on male survivors and their partners, this document examines the visual texts of both the fiction and nonfiction genres. Specifically, I contend that fiction film manufactures male survivorship with regard to rape events in such manner which contributes to the thematization of social silence. Such silence perpetuates the feminization of rape as a social problem, and dissolves the development of male survivor resources. A discussion of production processes, challenges, and resolutions is included. digital.library.unt.edu/ark:/67531/metadc2273/
Lyapunov Exponents, Entropy and Dimension
We consider diffeomorphisms of a compact Riemann Surface. A development of Oseledec's Multiplicative Ergodic Theorem is given, along with a development of measure theoretic entropy and dimension. The main result, due to L.S. Young, is that for certain diffeomorphisms of a surface, there is a beautiful relationship between these three concepts; namely that the entropy equals dimension times expansion. digital.library.unt.edu/ark:/67531/metadc4559/
Macaulay and Carlyle, a Study in Victorian Contrasts
Discusses the contrasts apparent in the Victorian era British writers Carlyle and Macaulay with reference to history, biography, and literary criticism. digital.library.unt.edu/ark:/67531/metadc70260/
Machine Combination Analysis Procedure for Selecting Optimal Factory Cell Composition
This research examined the relationship between manufacturing input parameters and factory performance in a cellular manufacturing environment. digital.library.unt.edu/ark:/67531/metadc278849/
Machine Language Techniques for Conversational Agents
Machine Learning is the ability of a machine to perform better at a given task, using its previous experience. Various algorithms like decision trees, Bayesian learning, artificial neural networks and instance-based learning algorithms are used widely in machine learning systems. Current applications of machine learning include credit card fraud detection, customer service based on history of purchased products, games and many more. The application of machine learning techniques to natural language processing (NLP) has increased tremendously in recent years. Examples are handwriting recognition and speech recognition. The problem we tackle in this Problem in Lieu of Thesis is applying machine-learning techniques to improve the performance of a conversational agent. The OpenMind repository of common sense, in the form of question-answer pairs is treated as the training data for the machine learning system. WordNet is interfaced with to capture important semantic and syntactic information about the words in the sentences. Further, k-closest neighbors algorithm, an instance based learning algorithm is used to simulate a case based learning system. The resulting system is expected to be able to answer new queries with knowledge gained from the training data it was fed with. digital.library.unt.edu/ark:/67531/metadc4385/
Macroinvertebrate Community Structure as an Indicator of Watershed Health in the Upper Trinity River Basin, North Central Texas
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This study describes macroinvertebrate community structure and assesses its potential in detecting point and non-point sources of disturbance associated with rural and urban areas in the Upper Trinity River Basin. Geospatial techniques were used to quantify landuse within the watershed in a GIS. At rural sites near the headwaters of the Trinity River, collector-gathering burrowers that are adapted to minimal flow comprised the majority of taxa. Destinies of taxa compositions at downstream sites increased and shifted toward psammophilic and rheophilic invertebrates, including primarily collector-filtering clingers, that are characteristic of shifting sand habitats in large prairie rivers. Benthic community structure generally benefited from point source impacts including wastewater treatment plant effluents that maintained higher flow. Community indices were negatively associated with forest landuse and positively associated with urban landuse. Partial CCA determined that flow and landuse contributed equally to species dispersions. Comparisons with historical biomonitoring studies in upper Trinity River Basin indicate improved watershed health. digital.library.unt.edu/ark:/67531/metadc2445/
"Mad Mary Sane" and Other Stories
The following is a multi-genre collection, including short shorts, short fiction, non-fiction, and drama. Each piece utilizes Gothic motifs and dark comedy in an effort to explore life and loss. digital.library.unt.edu/ark:/67531/metadc5254/
Madness in Elizabethan Drama
Insanity, which has long been a favorite theme of Elizabethan drama, summoned the dramatist's imagination to wonderful creations -- creations that were fantastic and grotesque, but unforgettable. digital.library.unt.edu/ark:/67531/metadc83635/
Maelstrom: the Last Coyote Tale
It is a dark future, where corporations have taken the place of governmental bodies, and Earth is a myth, forgotten in the reconstruction after the Second Dark Age. One man--a clone--investigates a murder [that] leads him deep into a spirit quest of his own that will answer the questions of Man's heritage as well as his own identity. This story is a science fiction, but it is similar in structure to a Coyote tale and involves quite a bit of Navajo mythology. The use of Native American imagery is not an attempt to capitalize on another culture, but rather to study the culture and use allegorical elements that transcend many cultures. It must also be noted that non-Native American writers wrote all texts available on the subject. This fact should be taken into consideration by the reader. digital.library.unt.edu/ark:/67531/metadc278915/
Magnetic Exchange in Oxovanadium(IV) Complexes with N-Salicylideneamino Acids
Copper(II) and oxovanadium(IV) ions resemble one another magnetically in having one unpaired electron in their complexes irrespective of their geometrical structures and bond types involved. Copper(II) complexes with antiferromagnetic exchange are well known. On the contrary, antiferromagnetic exchange in oxovanadium(IV) complexes is rather new and not well established. Very few oxovanadium(IV) complexes have been reported to have this anomalous magnetic property. In the investigation of the magnetic properties of oxovanadium(IV) complexes, we have successfully prepared two series of new oxovanadium(IV) complexes with N-salicylideneamino acids. digital.library.unt.edu/ark:/67531/metadc278821/
Magnetic Properties of Oxovanadium(IV) Complexes of Substituted N-(Hydroxylalkyl) Salicylideneimines
A series of oxovanadium(IV) complexes of Schiff bases derived from substituted salicylaldehyde and aminoalcohols has been prepared and characterized. The Schiff bases coordinate through 0, N, and 0 as tridentate bivalent ligands. The primary purpose of the investigation is to describe the structure and bonding in these complexes. The subnormal magnetic properties of the complexes provide much information about both the structure and the bonding in the complexes. digital.library.unt.edu/ark:/67531/metadc131506/
Magnetic Resonance of Protons in the Earth's Magnetic Field
The purpose of the work reported here was to determine the feasibility of applying the nuclear induction technique of Bloch to the direct observation of nuclear magnetic resonance in the very weak magnetic field of the earth. digital.library.unt.edu/ark:/67531/metadc108047/
Magnetic Susceptibility of a Crystalline Free Radical
The entirety of the investigation discussed in this paper was confined to a study of the spin resonance properties of unpaired electrons of an organic free radical. In the remainder of the paper the theory of electron spin resonance, the apparatus used in the investigation, and the experimental results obtained are discussed in that order. digital.library.unt.edu/ark:/67531/metadc108146/
Magnetically Driven Instabilities in Gas Discharges
In the present experiment a gas discharge plasma generator was designed and constructed and a search was made for evidence of a plasma instability due to the influence of an externally applied magnetic field. The evidence for such an unstable mode of operation is too indirect to make a possible conclusion, but an approach to more certain identification will be indicated. digital.library.unt.edu/ark:/67531/metadc108219/
Magneto-Optical and Chaotic Electrical Properties of n-InSb
This thesis investigation concerns the optical and nonlinear electrical properties of n-InSb. Two specific areas have been studied. First is the magneto-optical study of magneto-donors, and second is the nonlinear dynamic study of nonlinear and chaotic oscillations in InSb. The magneto-optical study of InSb provides a physical picture of the magneto-donor levels, which has an important impact on the physical model of nonlinear and chaotic oscillations. Thus, the subjects discussed in this thesis connect the discipline of semiconductor physics with the field of nonlinear dynamics. digital.library.unt.edu/ark:/67531/metadc279131/
Magnetomorphic Oscillations in Cadmium Cylinders
The work presented here is an experimental investigation of the effect of cylindrical geometry on electrical conductivity, in which single-crystal samples of cadmium at the temperature of liquid helium are used, with the diameter on the order of the electron mean free path. digital.library.unt.edu/ark:/67531/metadc131138/