Resource Type
Collection
Serial/Series Title
Degree Department
Degree Discipline
Degree Level
Country
States
Decade
Month
1,575 Matching Results
Results open in a new window/tab.
Immediate and Subsequent Effects of Fixed-Time Delivery of Therapist Attention on Problem Behavior Maintained by Attention
The purpose of the current study was to investigate the immediate and subsequent effects of fixed-time attention on problem behavior maintained by therapist attention utilizing a three-component multiple-schedule design. The treatment analysis indicated that fixed-time attention produced a significant immediate decrease in the frequency of physically disruptive behavior (PDB), represented by low frequencies of PDB in Component 2, as well as a continued subsequent effect, represented by lower frequencies of problem behavior in Component 3 when compared to Component 1. The possible behavioral mechanisms responsible for the observed suppression in Component 2 of the treatment analysis are discussed. Evidence of behavioral contrast was observed in Components 1 and 3 of the treatment analysis in conditions in which Component 2 contained a fixed-time schedule of stimulus delivery. In addition, limitations and future research are outlined.
Date:
August 2009
Creator:
Walker, Stephen Frank
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Impacts of Blogging Motivation and Flow on Blogging Behavior
With the development of free and easy-to-use software programs, blogging has helped turn Web consumers into Web content providers. Blogging provides distinctive insight into comprehending e-consumer behavior explicitly with respect to social networking and information searching behaviors while facilitating a state of flow. The objectives of this study are to identify determinant dimensions of blogging motivations and flow, and to investigate the hypothesized relationships of the motivational blogging behavior. Analyzing data (n = 432) from a southwestern university, results reveal the critical dimensions of motivations, behaviors, and flow in blogging. Upon extending Hoffman and Novak's (1996) flow model, 14 out of 26 hypotheses were confirmed regarding the significant impacts of blogging motivations and flow on blogging behaviors. The findings revealed that the desire for information, enjoyment, and loyalty are the primary drivers for experiential blogging behavior. Specifically, information-seeking is the decisive motivation to urge experiential and e-shopping behavior concurrently. This study shows that indulgence and telepresence in flow might play pivotal mediating roles to promote the goal-oriented e-shopping behavior resulting enjoyment and loyalty-seeking motivations.
Date:
August 2009
Creator:
Park, Boram
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Informational Theory of Midterm Elections: The Impact of Iraq War Deaths on the 2006 Election.
There has been much scholarly attention directed at the Iraq war's role in determining voter choice. I attempt to extend that research into voter turnout to determine what role the Iraq war played in 2006 voter turnout. This paper argues that turnout at the state level could be explained by the number of US deaths each state had sustained from the Iraq occupation at the time of the election. A theory of voter activation based on information availability is put forth to explain the relationship between national events and voter turnout wherein national events like the Iraq war will raise the amount of information voters have at their disposal, which will increase the likelihood of their voting on election day. Regression analysis comparing the turnout rates of the 50 states to their casualties in Iraq revealed no relationship between the two factors, indicating that something else is responsible for the high turnout of the midterm.
Date:
August 2009
Creator:
Kahanek, Jared E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Interweaving History: The Texas Textile Mill and McKinney, Texas, 1903-1968.
Texas textile mills comprise an untold part of the modern South. The bulk of Texas mills were built between 1890 and 1925, a compressed period of expansion in contrast to the longer developmental pattern of mills in the rest of the United States. This compression meant that Texas mill owners benefited from knowledge gained from mill expansion elsewhere, and owners ran their mills along the same lines as the dominant southeastern model. Owners veered from the established pattern when conditions warranted. This case study focuses on three mills in Texas that operated both independently and as a corporation for a total of sixty years. One mill in McKinney dominated the economy of a small town and serves as the primary focus of this paper. A second mill in Waco served a diversified economy in the center of the state; and the third mill, built in Dallas was concentrated in a major city in a highly competitive job market. All three of these mills will illuminate the single greatest difference between Texas mills and mills elsewhere, the composition of the labor force. Women did not dominate the mill labor force in Texas nor did children, except in limited cases, make-up a …
Date:
August 2009
Creator:
Kilgore, Deborah Katheryn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Maternal employment: Factors related to role strain.
Past literature suggests that working mothers are at an increased risk for experiencing role strain compared to other employed adults. The current study investigated attitudes and beliefs of 783 working mothers of 15-month-old children using data from the National Institute of Child Health and Human Development's Study of Early Child Care and Youth Development. Working mothers' levels of role strain was associated with perceived social support, attitudes toward maternal employment, job and parental role quality, financial stress, and depression. Negative attitudes toward maternal employment predicted maternal separation anxiety, while positive attitudes toward employment did not affect separation anxiety. These findings have implications for the importance of decreasing role strain in working mothers.
Date:
August 2009
Creator:
LoCascio, Stephanie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Missionary Millennium: The American West; North and West Africa in the Christian Imagination
During the 1890s in the United States, Midwestern YMCA missionaries challenged the nexus of power between Northeastern Protestant denominations, industrialists, politicians, and the Association's International Committee. Under Kansas YMCA secretary George Fisher, this movement shook the Northeastern alliance's underpinnings, eventually establishing the Gospel Missionary Union. The YMCA and the GMU mutually defined foreign and domestic missionary work discursively. Whereas Fisher's pre-millennial movement promoted world conversion generally, the YMCA primarily reached out to college students in the United States and abroad. Moreover, the GMU challenged social and gender roles among Moroccan Berbers. Fisher's movements have not been historically analyzed since 1975. Missionary Millennium is a reanalysis and critical reading of religious fictions about GMU missionaries, following the organization to its current incarnation as Avant Ministries.
Date:
August 2009
Creator:
Garrett, Bryan A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Modified epoxy coatings on mild steel: A study of tribology and surface energy.
A commercial epoxy was modified by adding fluorinated poly (aryl ether ketone) and in turn metal micro powders (Ni, Al, Zn, and Ag) and coated on mild steel. Two curing agents were used; triethylenetetramine (curing temperatures: 30 oC and 70 oC) and hexamethylenediamine (curing temperature: 80 oC). Variation in tribological properties (dynamic friction and wear) and surface energies with varying metal powders and curing agents was evaluated. When cured at 30 oC, friction and wear decreased significantly due to phase separation reaction being favored but increased when cured at 70 oC and 80 oC due to cross linking reaction being favored. There was a significant decrease in surface energies with the addition of modifiers.
Date:
August 2009
Creator:
Dutta, Madhuri
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
NSAID effect on prostanoids in fishes: Prostaglandin E2 levels in bluntnose minnows (Pimephales notatus) exposed to ibuprofen.
Prostanoids are oxygenated derivatives of arachidonic acid with a wide range of physiological effects in vertebrates including modulation of inflammation and innate immune responses. Nonsteroidal anti-inflammatory drugs (NSAIDs) act through inhibition of cyclooxygenase (COX) conversion of arachidonic acid to prostanoids. In order to better understand the potential of environmental NSAIDS for interruption of normal levels COX products in fishes, we developed an LC/MS/MS-based approach for tissue analysis of 7 prostanoids. Initial studies examining muscle, gut and gill demonstrated that prostaglandin E2 (PGE2) was the most abundant of the measured prostanoids in all tissues and that gill tissue had the highest and most consistent concentrations of PGE2. After short-term 48-h laboratory exposures to concentrations of 5, 25, 50 and 100 ppb ibuprofen, 50.0ppb and 100.0 ppb exposure concentrations resulted in significant reduction of gill tissue PGE2 concentration by approximately 30% and 80% respectively. The lower exposures did not result in significant reductions when compared to unexposed controls. Measured tissue concentrations of ibuprofen indicated that this NSAID had little potential for bioaccumulation (BCF 1.3) and the IC50 of ibuprofen for inhibition of PGE2 production in gill tissue was calculated to be 0.4 µM. Short-term laboratory exposure to ibuprofen did not result in …
Date:
August 2009
Creator:
Bhandari, Khageshor
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
On the density of minimal free subflows of general symbolic flows.
This paper studies symbolic dynamical systems {0, 1}G, where G is a countably infinite group, {0, 1}G has the product topology, and G acts on {0, 1}G by shifts. It is proven that for every countably infinite group G the union of the minimal free subflows of {0, 1}G is dense. In fact, a stronger result is obtained which states that if G is a countably infinite group and U is an open subset of {0, 1}G, then there is a collection of size continuum consisting of pairwise disjoint minimal free subflows intersecting U.
Date:
August 2009
Creator:
Seward, Brandon Michael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Processing, Structure, and Tribological Property Interrelationships in Sputtered Nanocrystalline ZnO Coatings
Solid lubricant coatings with controlled microstructures are good candidates in providing lubricity in moving mechanical assembly applications, such as orthopedics and bearing steels. Nanocrystalline ZnO coatings with a layered wurtzite crystal structure have the potential to function as a lubricious material by its defective structure which is controlled by sputter deposition. The interrelationships between sputtered ZnO, its nanocrystalline structure and its lubricity will be discussed in this thesis. The nanocrystalline ZnO coatings were deposited on silicon substrates and Ti alloys by RF magnetron sputtering with different substrate adhesion layers, direct current biases, and temperatures. X-ray diffraction identified that the ZnO (0002) preferred orientation was necessary to achieve low sliding friction and wear along with substrate biasing. In addition, other analyses such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED) were utilized to study the solid lubrication mechanisms responsible for low friction and wear.
Date:
August 2009
Creator:
Tu, Wei-Lun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Rete Mirabile: An Installation
Rete Mirabile is my new installation piece combining scientific principles with live computer generated music. The title is a Latin term meaning "Wonderful Net," which I use to refer to the highly convoluted network of biological data that drives my installation. The sonification of data, computer modeling of biological processes, kinetic sculptures, and user interactivity are central parts of the installation. The paper is organized as follows: First, brief history of the forerunners that inspired my work is given. This includes a short discussion on how John Cage and David Tudor influenced current artists works, and how those works have influenced my own work. Then I review current installation works that share similarities with my own. Finally, a detailed discussion and analysis of the construction and function concludes the paper.
Date:
August 2009
Creator:
Rivera, Philip Andrew
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Rise and Fall of a Revolutionary Relationship: George Washington and Thomas Paine, 1776-1796
This study is a cultural and political analysis of the emergence and deterioration of the relationship between George Washington and Thomas Paine. It is informed by modern studies in Atlantic history and culture. It presents the falling out of the two Founding Fathers as a reflection of two competing political cultures, as well as a function of the class aspirations of Washington and Paine. It chronologically examines the two men's interaction with one another from the early days of the American Revolution to the Reign of Terror of the French Revolution. Along the way this study highlights the dynamics that characterized the Washington-Paine relationship and shows how the two men worked together to further their own agendas. This study also points to Thomas Paine's involvement with a web of Democratic Societies in America and to Washington's increasing wariness and suspicion of these Societies as agents of insurrection.
Date:
August 2009
Creator:
Hamilton, Matthew K.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Sacred and the Profane: Nin, Barnes, and the Aesthetics of Amorality
Barnes's Vagaries Malicieux, and Nin's Delta of Venus, are examples the developing vision of female sex, and both authors use their literary techniques to accomplish their aesthetic vision of amorality. Nin's visions are based on her and her friends' extreme experiences. Her primary concern was expressing her erotic and amorally aesthetic gaze, and the results of her efforts are found in her aesthetic vision of Paris and the amoral lifestyle. Barnes uses metaphor and linguistics to fashion her aesthetic vision. Her technique in "Run, Girls, Run!" both subverts any sense of morality, and offers an interesting and challenging read for its audience. In "Vagaries Malicieux" Barnes's Paris is dark while bright, and creates a sense of nothingness, indicated only by Barnes's aesthetic appreciation.
Date:
August 2009
Creator:
Dunbar, Erin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Saying Sorry: Conflict Atrocity and Political Apology
This study proposes and tests a comprehensive theory detailing the motivations behind political apologies. A brief survey of the literature shows a field rich in case studies but lacking in rigorous scientific analysis. The theory presented proposes a three-level examination of political apology at the state, dyadic, and system levels and incorporates the effects of culture, conflict, and the nature of the international system into analysis. This study makes use of a new dataset recording the occurrence of political apologies for interstate conflict atrocities from 1900 to 2006. The results suggest that the existing literature, while rich, does not account for all the motivating factors behind apology. The results also confirm that political apology is a creation of the modern era and a result of the liberalization of the international system. In conclusion, paths for future research are suggested and the advent of a global "age of apology" is confirmed.
Date:
August 2009
Creator:
Chalkley, Marie Leone
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sights and Sounds of the Mysterious Side of Myself
This film is an autobiographical documentary which tells the story of the process of documenting the filmmaker's trip to his land of heritage. As his plans for his journey and film begin to go awry, he begins to question the entire process of trying to connect with nation and place.
Date:
August 2009
Creator:
Dojs, Marek Ryszard
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The sixteenth-century basse de violon: fact or fiction? Identification of the bass violin (1535-1635).
Research on the origins of the violoncello reveals considerable dispute concerning the existence and identity of its ancestor, the bass violin. This study focuses on the classification of the sixteenth- and early seventeenth-century bass violin by means of the following criteria: construction, early history and development, role due the social status of builders and players, use within the violin band, performing positions, and defining terminology. Accounts of inventories, organological treatises, music theoretical writings, lists of households and royal courts, descriptions of feasts, reports of choreographies and iconographical examples confirm the bass violin's presence in the late sixteenth century and beyond. Three of the earliest unchanged extant organological examples embody, complement and corroborate the bass violin's identification, and conclude the essay.
Date:
August 2009
Creator:
Erodi, Gyongy Iren
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Social Movements, Subjectivity, and Solidarity: Witnessing Rhetoric of the International Solidarity Movement
This study engaged in pushing the current political limitations created by the political impasse of the Palestinian-Israeli conflict, by imagining new possibilities for radical political change, agency, and subjectivity for both the international activists volunteering with the International Solidarity Movement as well as Palestinians enduring the brutality of life under occupation. The role of the witness and testimony is brought to bear on activism and rhetoric the social movement ISM in Palestine. Approaches the past studies of the rhetoric of social movements arguing that rhetorical studies often disassociated 'social' from social movements, rendering invisible questions of the social and subjectivity from their frames for evaluation. Using the testimonies of these witnesses, Palestinians and activists, as the rhetorical production of the social movement, this study provides an effort to put the social body back into rhetorical studies of social movements. The relationships of subjectivity and desubjectification, as well as, possession of subjects by agency and the role of the witness with each of these is discussed in terms of Palestinian and activist potential for subjectification and desubjectifiation.
Date:
August 2009
Creator:
Wachsmann, Emily Brook
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Study of Silver Deposition on Silicon (100) by IR Spectroscopy and Patina Formation Study of Oxygen Reduction Reaction on Ruthenium or Platinum
To investigate conditions of silver electroless deposition on silicon (100), optical microscope, atomic force microscope (AFM) and attenuated total reflection infrared spectroscopy (ATR-FTIR) spectroscopy were used. Twenty second dipping in 0.8mM AgNO3/4.9% solution coats a silicon (100) wafer with a thin film of silver nanoparticles very well. According to AFM results, the diameter of silver particles is from 50 to 100nm. After deposition, arithmetic average of absolute values roughness (Ra) increased from ~0.7nm to ~1.2nm and the root mean square roughness (Rq) is from ~0.8nm to ~1.5nm. SCN- ions were applied to detect the existence of silver on silicon surface by ATR-FTIR spectroscopy and IR spectra demonstrate SCN- is a good adsorbent for silver metal. Patina is the general name of copper basic salts which forms green-blue film on the surface of ancient bronze architectures. Patina formation has been found on the surface of platinum or ruthenium after several scans of cyclic voltammetry in 2mM CuSO4/0.1M K2SO4, pH5 solution. Evidence implies that oxygen reduction reaction (ORR) triggers the patina formation. ORR is an important step of fuel cell process and only few sorts of noble metals like platinum can be worked as the catalyst of ORR. Mechanisms of patination involving …
Date:
August 2009
Creator:
Yang, Fan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Study of the effects of background and motion camera on the efficacy of Kalman and particle filter algorithms.
This study compares independent use of two known algorithms (Kalmar filter with background subtraction and Particle Filter) that are commonly deployed in object tracking applications. Object tracking in general is very challenging; it presents numerous problems that need to be addressed by the application in order to facilitate its successful deployment. Such problems range from abrupt object motion, during tracking, to a change in appearance of the scene and the object, as well as object to scene occlusions, and camera motion among others. It is important to take into consideration some issues, such as, accounting for noise associated with the image in question, ability to predict to an acceptable statistical accuracy, the position of the object at a particular time given its current position. This study tackles some of the issues raised above prior to addressing how the use of either of the aforementioned algorithm, minimize or in some cases eliminate the negative effects
Date:
August 2009
Creator:
Morita, Yasuhiro
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Taiwanese Cruisers in North America: An Empirical Analysis of Their Motivations, Involvement, and Satisfaction
Cruise travel has become very popular worldwide. The North American cruise market is the world's biggest. Asian countries are among the fastest-growing outbound market for cruise travel. The Taiwanese cruise market has grown substantially. However, few research studies have examined Taiwanese travelers' motivation to experience a cruise vacation, and their satisfaction with the experience. Primary data was collected from a convenience sample of Taiwanese tourists who had been on North American cruise tours. Survey respondents were first time cruisers, over 40 years old, married, and had a Bachelor's degree, or higher. Push and pull motivational factors were identified. Respondents were influenced by recommendations from media and people. Respondents were satisfied with tangibles, cleanliness, food choices and selection, and responsiveness of staff. An overwhelming majority of cruisers would re-visit and recommend this trip. Implications for researchers and practitioners are suggested.
Date:
August 2009
Creator:
Huang, Taiyi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Testing New Measures of Age Independent Body Size in White-Tailed Deer (Odocoileus virginianus)
The four elements of the lower hind foot (calcaneus, metatarsal, naviculo-cuboid, and tibia) were tested for use as age-independent proxies of body size in white-tailed deer using known aged specimens from Ft. Hood Texas. Statistical analysis indicates that the calcaneum and the tibia are good proxies of age-independent body size in white-tailed deer. In addition to expanding the list of elements that can be used for studies of age-independent body size, these elements can also be used to age faunal remains to an ordinal scale of juveniles and adults. This is useful for research regarding prehistoric prey populations; as a single element can be used to determine prey body size and age simultaneously, which are the two variables used to assess changes in human subsistence practices via the archaeological remains of their prey.
Date:
August 2009
Creator:
Densmore, Julie A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Transforming the Predator: Representations of the Child Sexual Abuser in 21st Century American Visual Media
This thesis examines the ways American visual media -television and mainstream/independent cinema- has presented the narrative of child sexual abuse since the beginning of the 21st century. Due to the rise of the counterculture movement and the sexual revolution of the 1960s, a discourse for talking about child sexuality was created. By providing an opportunity to discuss children and sex, for the first time cultural products could deal overtly with child sexual abuse, rather than connotatively. In response to this new discourse, conservative ideals about child sexuality proliferated in the 1970s and 1980s that attempted to return the child to a world of purity and asexuality with all threats to this purity being monstrous. The examples discussed in this thesis highlight the ways that contemporary American visual media has responded to three decades of obsession that created a "master narrative" of child sexual abuse - something that continues to play a significant role in society.
Date:
August 2009
Creator:
Jay, Samuel M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Transnational Compositionality and Hemon, Shteyngart, Díaz; A No Man's Land, Etc.
Contemporary transnational literature presents a unique interpretive problem, due to new methods of language and culture negotiation in the information age. The resulting condition, transnational compositionality, is evidenced by specific linguistic artifacts; to illustrate this I use three American novels as a case study: Nowhere Man by Aleksandar Hemon, Absurdistan by Gary Shteyngart, and The Brief Wondrous Life of Oscar Wao by Junot Díaz. By extension, many conventional literary elements are changed in the transnational since modernity: satire is no longer a lampooning of cultures but a questioning of the methods by which humans blend cultures together; similarly, complex symbolic constructions may no longer be taken at face value, for they now communicate more about cultural identity processes than static ideologies. If scholars are to achieve adequate interpretations of these elements, we must consider the global framework that has so intimately shaped them in the twenty-first century.
Date:
August 2009
Creator:
Miner, Joshua D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Tuscan Lawyer, His Farms and His Family: The Ledger of Andrea di Gherardo Casoli, 1387-1412
This is a study of a ledger written by Andrea di Gherardo Casoli between the years 1387 and 1412. Andrea was a lawyer in the Tuscan city of Arezzo, shortly after the city lost its sovereignty to the expanding Florentine state. While Andrea associated his identity with his legal practice, he engaged in many other, diverse enterprises, such as wine making, livestock commerce, and agricultural management. This thesis systematically examines each major facet of Andrea's life, with a detailed assessment of his involvement in rural commerce. Andrea's actions revolved around a central theme of maintaining and expanding the fortunes, both financial and social, of the Casoli family.
Date:
August 2009
Creator:
Grover, Sean Thomas
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library