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2D and 3D Fabrication Devices: Can They Improve Spatial Reasoning Skills in Children? (open access)

2D and 3D Fabrication Devices: Can They Improve Spatial Reasoning Skills in Children?

The purpose of this study is to evaluate the potential benefit of two hours of activities involving 2D and 3D fabricators on the spatial reasoning skills of children in Grades 4 and 5, ages 9 to 10, from a private school in Southeast Texas. Can the introduction to hands-on activities with products created with these devices and learning about how these devices operate improve spatial reasoning skills? The research also evaluates the use of the Shapes Test as a valid measure of the spatial reasoning skills of children. The Cube Design and Spatial Memory subtests of the UNIT (Universal Nonverbal Intelligence Tests) were used for evaluating the spatial reasoning skills of the participants, based on their respected validity, along with a Shapes Test that is in development. Discussion regarding gender, language, and experiential theories of spatial reasoning skill development are included in the literature review.
Date: August 2016
Creator: Zimmerman, Ellen L
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Academic Progress Scores to Predict Performance on a State Assessment (open access)

Academic Progress Scores to Predict Performance on a State Assessment

This quantitative study examined seventh-grade reading scores to determine the extent to which certain demographic variables (race/ethnicity, gender, socioeconomic status) explain and MAP reading scores predict reading scores on the State of Texas Assessment of Academic Readiness (STAAR) in a selected northeast Texas public school. Standardized assessments only compare the relative performance of an individual student to other groups of students using scaled scores, which can vary from year to year and from state to state. With the advent of computer adaptive testing, this study provides information on the predictive validity of benchmark assessments. Specifically, this study looked for predictive evidence that indicates how accurately test data can predict criterion scores. Findings revealed, through a multiple regression analysis, that the fall MAP Rasch Unit (RIT) scores predicted the STAAR scale scores. Using SPSS version 22, the data were entered and analyzed in a multiple regression model to determine the presence of a statistical trend or lack thereof. Demographic data and MAP scores were entered into the regression model to examine the predictive validity of the MAP assessment in determining student performance on the STAAR seventh-grade state-mandated reading assessment. The statistical analysis revealed that MAP RIT scores explain a significant variance …
Date: December 2016
Creator: Curry, David Mitchell
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Accelerated Degree Program Faculty: Motivation to Teach (open access)

Accelerated Degree Program Faculty: Motivation to Teach

Adult educators are a growing part of American higher education. Because of their increasing prominence in adult education, it is essential to understand what roles these educators play and what motivates them to remain in the profession despite poor work prospects and conditions. Research to date, however, focuses primarily on the adult learner and not the adult educator. The purpose of this qualitative, multiple-case study was to explore the role and motivation for teaching of adult educators employed as adjunct faculty in an accelerated degree program at a small, liberal arts college in the northwest United States. Purposeful sampling was used to select the five participants for the study. All participants taught in the program for more than five years and were considered to be successful in their positions by peers, students, and administrators. The study employed a preliminary demographic survey to solicit initial background data on the instructors. Other data collection included in-depth, open-ended, face-to-face interviews, document analysis, and classroom observation. The results showed that all five participants identified the following roles and assumed them in the classroom: (a) facilitator, (b) listener, (c) specialist, (d) guide, (e) adviser, and (f) co-learner or colleague. Further results showed that all five …
Date: May 2016
Creator: Grishkevich, Hanna H.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Accuracy of Partner Perception and Relationship Satisfaction: Investigating Masturbatory Habits (open access)

Accuracy of Partner Perception and Relationship Satisfaction: Investigating Masturbatory Habits

An individual's perceptions of various aspects of one's romantic relationship (irrespective of whether or not the perceptions align with reality) often play a critical role in romantic relationship satisfaction. Research has demonstrated that the accuracy of an individual's perception of his or her partner is generally positively related to the individual's romantic relationship satisfaction. However, when perceiving negative or conflictual messages from a partner, an individual's accuracy of perception is negatively associated with his or her romantic relationship satisfaction. Researchers have suggested that poor accuracy in perceiving negative messages might diffuse the negative intention in a way that is less impactful to the relationship. The present study was designed to investigate accuracy in the perception of sexual topics, specifically masturbatory habits. A sample of 93 married couples (186 individuals) responded to questions about (a) their own masturbatory behaviors and (b) their perception of their partners' masturbatory behaviors to determine the accuracy of each partner's perception of his or her partner. The association between accuracy and romantic and sexual relationship satisfaction was explored, along with one potential moderating variable: attitudes toward masturbation. Perceived reason for masturbating, perceived target of arousal during masturbation, and partner's actual reason for masturbating all positively predicted …
Date: August 2016
Creator: Ramos, Marciana Julia
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Adoption, Management, and Performance of Local Government Investment Pools: A Comparative Analysis of State Practices (open access)

The Adoption, Management, and Performance of Local Government Investment Pools: A Comparative Analysis of State Practices

This dissertation examines the factors influencing a state’s decision to adopt a local government investment pool (LGIP), the institutional arrangements used in managing them, and the effect of the institutional types on LGIP performance. The dissertation extends the policy adoption theory with insights from investment theory to demonstrate that management credibility influences the likelihood of a state’s LGIP adoption. The study finds that the quality of financial management, the quality of professional leadership, proximate state neighbors who have previously adopted an LGIP, and economic factors determine a state’s proclivity to policy adoption. The dissertation also describes the institutional arrangements used in managing LGIPs and develops typologies based on their institutional arrangements. The dissertation compares LGIPs depending on the risk aversion of their institutional arrangements. The research extends the risk-return tradeoff in investment theory to LGIP institutional arrangements. The empirical findings show that LGIP institutional arrangement that has greater risk report higher performance. The dissertation also finds that competition in the LGIP market due to multiple vendors, and periods of economic recession account for higher performance because of higher risk-taking behaviors associated with them. This dissertation promotes public funds investment laws that emphasize prudent management of government finances and guides managers …
Date: May 2016
Creator: Nukpezah, Julius Atsu
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adult Learning: Evaluation of Preferences for Technology and Learning Sources for Workplace Learning (open access)

Adult Learning: Evaluation of Preferences for Technology and Learning Sources for Workplace Learning

The purpose of this research was to provide an initial investigation of the preferences for both technology and learning sources that are available today in the modern workplace at a large financial institution with a national presence in the USA. In addition to the preferences of the participants, the research includes insights about the culture of the learning organization by using the Dimension of Learning Organization Questionnaire (DLOQ) and two preference surveys. The research methods used in this study are categorized as mixed methods and include both quantitative and qualitative methods. This study is nonpositivist and descriptive. It is based on a triangulation design method which is comprised of analysis from data obtained from the DLOQ and preference surveys, as well as semi-structured interviews with several survey participants. The results of the studies provide the foundational information for an extended quantitative analysis.
Date: December 2016
Creator: Kaiser, Robert Cresswell
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Analysis and Optimization of Graphene FET based Nanoelectronic Integrated Circuits (open access)

Analysis and Optimization of Graphene FET based Nanoelectronic Integrated Circuits

Like cell to the human body, transistors are the basic building blocks of any electronics circuits. Silicon has been the industries obvious choice for making transistors. Transistors with large size occupy large chip area, consume lots of power and the number of functionalities will be limited due to area constraints. Thus to make the devices smaller, smarter and faster, the transistors are aggressively scaled down in each generation. Moore's law states that the transistors count in any electronic circuits doubles every 18 months. Following this Moore's law, the transistor has already been scaled down to 14 nm. However there are limitations to how much further these transistors can be scaled down. Particularly below 10 nm, these silicon based transistors hit the fundamental limits like loss of gate control, high leakage and various other short channel effects. Thus it is not possible to favor the silicon transistors for future electronics applications. As a result, the research has shifted to new device concepts and device materials alternative to silicon. Carbon is the next abundant element found in the Earth and one of such carbon based nanomaterial is graphene. Graphene when extracted from Graphite, the same material used as the lid in pencil, …
Date: May 2016
Creator: Joshi, Shital
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Analysis of Educational Technology Publications:  Who, What and Where in the Last 20 Years (open access)

An Analysis of Educational Technology Publications: Who, What and Where in the Last 20 Years

This exploratory and descriptive study examines research articles published in ten of the top journals in the broad area of educational technology during the last 20 years: 1) Educational Technology Research and Development (ETR&D); 2) Instructional Science; 3) Journal of the Learning Sciences; 4) TechTrends; 5) Educational Technology: The Magazine for Managers of Change in Education; 6) Journal of Educational Technology & Society; 7) Computers and Education; 8) British Journal of Educational Technology (BJET); 9) Journal of Educational Computing Research; and 10) Journal of Research on Technology in Education. To discover research trends in the articles published from 1995-2014, abstracts from all contributing articles published in those ten prominent journals were analyzed to extract a latent semantic space of broad research areas, top authors, and top-cited publications. Concepts that have emerged, grown, or diminished in the field were noted in order to identify the most dominant in the last two decades; and the most frequent contributors to each journal as well as those who contributed to more than one of the journals studied were identified.
Date: May 2016
Creator: Natividad Beltrán del Río, Gloria Ofelia
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Analysis of Factors for Successful State-Level Support of Low-Performing Schools (open access)

Analysis of Factors for Successful State-Level Support of Low-Performing Schools

This study provides a qualitative look at Texas' Professional Service Providers' (PSPs) strategies for supporting low-performing schools. Four PSPs were selected for participation based on the number of schools they helped exit the Texas Title I School Improvement Program from 2007-2012. Data collected and analyzed included provider and principal interviews, providers' progress reports documenting services, and principals' evaluations of provider services. Results indicated key support strategies in two of four cases were supporting and mentoring/coaching while communicating and building trust were important in the other two cases. Communicating, reviewing information, and planning were important across all cases. The quality indicators aligning with the PSPs' strategies were fit, comprehensiveness, and coherence. They were also the most common across all cases. Finally, analysis of the evaluation of provider services revealed PSP-1 with the highest ratings, followed by PSP-2, PSP-3, and PSP-4 respectively. The findings suggest, first, that PSP support has a dual nature. Contextual support was provided based on the campus leaderships' skills and requests. PSPs also ensured coherence among the strategies of all stakeholders. Secondly, a hierarchy of quality service indicators aligned to the PSPs' strategies: fit, comprehensiveness, and coherence. Finally relationships are vital to a successful provider-campus relationship. The findings …
Date: May 2016
Creator: Ewing, Angela R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Analysis of the Economic and Institutional Factors Affecting Recovery by Local Governments from Huricanes (open access)

An Analysis of the Economic and Institutional Factors Affecting Recovery by Local Governments from Huricanes

This dissertation examines the impact of major hurricanes on changes in GDP for counties in four states – Alabama, Florida, Louisiana, and Texas. The analysis examines the effectiveness of intergovernmental financing for major hurricanes between 2000 and 2014. It also examines whether institutional proximity of the disaster management function to the Governor's Office and the career status of the director affect the speed of recovery from the disaster. The analysis also assesses the impact that a counties's prior experience at dealing with disasters has on the speed of recovery.
Date: August 2016
Creator: Short, Jesseca Elizabeth
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Analysis of the Leadership Development Competency Frameworks of Nontraditional Principal Preparation Programs (open access)

An Analysis of the Leadership Development Competency Frameworks of Nontraditional Principal Preparation Programs

This study explored the competency frameworks of nontraditional principal preparation programs to determine how they aligned to research-based best practices for school leaders. The research questions that guided this work were: To what degree are the McREL 21 Leadership Responsibilities addressed in the competency frameworks of nontraditional principal preparation programs? How do the leaders of the nontraditional principal preparation programs view the degree to which their competencies include the McREL 21 Leadership Responsibilities? A multi-case study analysis was conducted that compared the competency frameworks of four nontraditional principal preparation programs. The Knowledge is Power Program (KIPP), New Leaders, New York City Leadership Academy (NYCLA), and Teaching Trust were the nontraditional programs selected for this study. Leaders from the four organizations were interviewed. The findings from the research illustrated that a majority of the McREL 21 Leadership Responsibilities were included in the competency frameworks of nontraditional principal preparation programs. The study revealed that four of the McREL 21 were not included in any of the competency frameworks. Another finding was the lack of focus on talent management and personal dispositions in the McREL 21 Leadership Responsibilities. Nontraditional principal preparation programs are a growing avenue for principal preparation, as such their use …
Date: May 2016
Creator: Horton, Tonya
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Analytical Study of Paradox and Structural Dualism in the Music of Ludwig van Beethoven (open access)

An Analytical Study of Paradox and Structural Dualism in the Music of Ludwig van Beethoven

Beethoven's rich compositional language evokes unique problems that have fueled scholarly dialogue for many years. My analyses focus on two types of paradoxes as central compositional problems in some of Beethoven's symphonic pieces and piano sonatas. My readings of Beethoven's Piano Sonata No. 27 (Op. 90), Symphony No. 4 (Op. 60), and Symphony No. 8 (Op. 93) explore the nature and significance of paradoxical unresolved six-four chords and their impact on tonal structure. I consider formal-tonal paradoxes in Beethoven's Tempest Sonata (Op. 31, No. 2), Ninth Symphony (Op. 125), and Overture die Weihe des Hauses (Op. 124). Movements that evoke formal-tonal paradoxes retain the structural framework of a paradigmatic interrupted structure, but contain unique voice-leading features that superimpose an undivided structure on top of the "residual" interrupted structure. Carl Schachter's observations about "genuine double meaning" and his arguments about the interplay between design and tonal structure in "Either/Or" establish the foundation for my analytical approach to paradox. Timothy Jackson's reading of Brahms' "Immer leiser word meine Schlummer" (Op. 105, No. 2) and Stephen Slottow's "Von einem Kunstler: Shapes in the Clouds" both clarify the methodology employed here. My interpretation of paradox involves more than just a slight contradiction between two …
Date: May 2016
Creator: Graf, Benjamin
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Art Education Policy: Interpretation and the Negotiation of Praxis (open access)

Art Education Policy: Interpretation and the Negotiation of Praxis

This collective case study explores the confluence of educational policy and professional praxis by examining the ways art teachers in one public school district make decisions about creating and implementing curricula. Through various interpretations of one district's formal and informal expectations of art teachers, some of the complexities of standards, instruction, and assessment policies in public schools are described. The research shares how art teachers are influenced by local policy expectations by examining how five K-12 art teacher participants negotiate their ideological beliefs and practical knowledge within the professional context of their local setting, and presents an art teacher decision-making framework to conceptualize the influences for praxis and to organize analysis. Case study data include in-depth interview sessions, teaching observations, and district policy artifacts. Themes emerge in the findings through coding processes and constructivist grounded theory analysis methods. The research describes how participants interpret and negotiate expectations, finding curricular freedom and participation in public exhibition as central policy factors. Contributing the perspectives of art teachers to the literature of policy implementation and fine arts education, the study finds that balancing autonomy and mandates are primary sites for negotiating praxis and that informal expectations for student exhibition contribute to a culture …
Date: August 2016
Creator: Garth, Timothy Brian
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Art of Borrowing: Quotations and Allusions in Western Music (open access)

The Art of Borrowing: Quotations and Allusions in Western Music

Music travels across the past in the form of composers borrowing from each other. Such musical borrowings and quotations involve not only the use of melodic materials but also musical structures, texts, symbolism and other types of inspiration. The pre-existing musical idea being used is linked to a specific memory of a particular composer and time. The artistic allusions of composers connect the present and the past. Music also travels across the present and into the future. The outcome of contemporary composers borrowing from each other influences the present period and affects later composers' musical inspiration, i.e., it affects future composers, and therefore, the future. Composers frequently refer to melodies or musical idea from contemporaries and reinterpret them in their own compositions. This is largely because composers do not write in isolation and have been inspired and influenced by contemporary musicians and cultural contexts. However, these musical borrowings sometimes raise questions about the composers' creativity and authenticity. This is largely due to the nature of inspiration and imagination, which determines who or what is original. With this in mind, why do composers still borrow musical ideas despite the risks involved? In what ways do they overcome criticism and demonstrate the …
Date: May 2016
Creator: Lee, Myung-Ji
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Assessing the Older Diabetic Population in the US: A Descriptive Look at This Population from 2001-2010 Focusing upon Education and Clinical Behaviors (open access)

Assessing the Older Diabetic Population in the US: A Descriptive Look at This Population from 2001-2010 Focusing upon Education and Clinical Behaviors

The focus of this research study was to gain needed information on the older adult population in the United States who have diabetes. The research method was quantitative retrospective study of American diabetes obtained from the National Health Interview Survey database from 2001 through 2010. The study results confirmed more than one-third of the U.S. diabetics are aged 65 and older. More than 75% of the older diabetic population report clinical limitations or comorbidities. Based on surrogate markers of education, it appears the older diabetic cohort did receive more preventative care visits than did the older nondiabetic population; however, the difference was not robust. I found a slight negative trend between age and emergency room visits in the older diabetic population; in addition, there was a negative association between age and smoking in this population. There continues to be a need for scientific research in this population. Greater numbers need education and more clinical trials specific to the older diabetic should be encouraged.
Date: December 2016
Creator: Parker, Patti Annette
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Associations Between Collaborative Learning and Personality/Cognitive Style Among Online Community College Students (open access)

Associations Between Collaborative Learning and Personality/Cognitive Style Among Online Community College Students

This research study investigated associations between online community college students' personal characteristics and experiences in online courses (n = 123). Specifically, students' personalities and cognitive styles were examined alongside the perceived quality and outcomes of collaboration. Negative correlations were found between the conscientiousness personality style and both the quality of collaboration (p = .09) and the outcome of collaboration (p = .05). This finding indicates that conscientious students who, according to the literature tend to have higher academic achievement than other students, perceive negative experiences in online collaborative environments. Conversely, a positive correlation was discovered between the extraversion personality type and the perceived outcomes of collaboration (p = .01). Thus, students with a strongly extraverted personality tend to perceive that they benefits from collaborative learning. Approximately 11% of the variance in the collaborative experience was explained by the combined personal characteristics. The reported frequency of collaboration was positively correlated with both the quality (p < .01) and the outcomes of collaboration (p < .01). While not generalizable, these results suggest that not all students perceive benefits from online collaborative learning. It may be worthwhile to teach students traits associated with the extraversion type like flexibility which is important for collaborative …
Date: December 2016
Creator: Sheffield, Anneliese
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Associations Between Witnessing the Abuse of a Sibling in Childhood and Experiencing Trauma Related Symptoms in Adulthood (open access)

Associations Between Witnessing the Abuse of a Sibling in Childhood and Experiencing Trauma Related Symptoms in Adulthood

Currently sibling research is burgeoning, yet there is virtually no literature regarding outcomes associated with witnessing the abuse of a sibling. The present study aimed to address this gap in the literature. A sample of 284 university students were surveyed regarding traumatic experiences in childhood and adulthood, the quality of childhood sibling relationships, and the experience of trauma symptoms in adulthood. Regression and moderation analyses were conducted to examine the relationship between witnessing the abuse of a sibling in childhood and trauma symptoms in adulthood and to assess whether sibling relationship quality moderates the association between sibling abuse and trauma symptomology. Results showed that witnessing the abuse of a sibling was associated with depression symptoms in the overall sample and for females reporting about a brother. Also, sibling conflict moderated the relationship between witnessed sibling abuse and externalization in sister-sister dyads. These associations should be considered in terms of the systemic abuse to which participants were exposed. Implications for clinical practice working with sibling-related victimization are discussed.
Date: August 2016
Creator: Williams, Jennifer S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Attachment Insecurity, Emotion Regulation Difficulties, and Mindfulness Deficits in Personality Pathology (open access)

Attachment Insecurity, Emotion Regulation Difficulties, and Mindfulness Deficits in Personality Pathology

A growing body of research has documented associations between personality disorders (PDs) and attachment disturbance, and yet, attachment disturbance does not necessarily guarantee the development of PD pathology. Thus, understanding the mechanisms mediating the relationship between attachment disturbance and PD pathology remains an open area of research. One area with sound theoretical and empirical evidence has shown that attachment disturbances are associated with emotion regulation difficulties, as well as maladaptive interpersonal patterns of behavior. However, the research conducted thus far has predominately focused on borderline personality disorder, at the exclusion of other PD domains, and also has not broadened the scope of research to include other relevant psychological processes that may clarify how personality pathology and attachment disturbance are interrelated. Using a large independent sample of college (n = 946) and community-based individuals (n = 271), the current study aimed to (1) examine how the Personality Inventory for DSM-5 (PID-5) PD trait domains would be differentially associated with maladaptive attachment processes and emotion regulation problems, and (2) explore whether deficits in mindfulness and emotion regulation mediated the relationship between disturbed attachment and PD trait domains. Findings suggested that the PID-5 PD trait domains have general and specific relations to attachment …
Date: August 2016
Creator: Lewis, Jonathan James
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Attitudes about Caregiving: An Ethnicity by Generation Approach (open access)

Attitudes about Caregiving: An Ethnicity by Generation Approach

The goal of this project was to understand ethnic and generational differences in attitudes towards caregiving and expected burden while taking into consideration factors such as gender, generation, familism, and acculturation. One hundred and sixteen young adults (ages 18-25) and 93 middle-age adults (ages 38-62) were enrolled in the study. Participants included European Americans, African Americans, and Hispanics. Using moderation analysis, two hypotheses were investigated: 1) Ethnicity relates to attitudes towards caregiving, moderated by gender, generation, familism, and acculturation. 2) Ethnicity and expected burden relate to each other, moderated by gender, generation, familism, and acculturation. Familism emerged as a moderator in the relationship between ethnicity and expected burden. Results suggested that the strength of the relationship between being African American and expecting burden was less for those with moderate familism (R =.078), slightly higher for low familism (R = .176), and the highest for high familism (R= .261). Additional results indicated that the strength of the relationship between being Hispanic, as opposed to being European American, and expected burden, was higher for middle-aged adults (R =.23) when compared to young adults (R =.19). The current findings lend support to the recently established idea that familism is not protective against burden …
Date: August 2016
Creator: Caballero, Daniela M
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Background, Compositional Style, and Performance Considerations in the Clarinet Works of David Baker: Clarinet Sonata and Heritage: A Tribute to Great Clarinetists (open access)

Background, Compositional Style, and Performance Considerations in the Clarinet Works of David Baker: Clarinet Sonata and Heritage: A Tribute to Great Clarinetists

David Baker (b. 1931) is an educator, composer, and jazz legend. He has composed at least fifteen works that include the clarinet. Baker’s Clarinet Sonata (1989) has become a standard of clarinet repertoire and a popular recital inclusion. His chamber work Heritage: A Tribute to Great Clarinetists (1996) interweaves solo transcriptions of five jazz clarinetists. The compositional style of Baker’s clarinet works frequently links jazz and classical idioms. The two works discussed in this document are excellent examples for classically trained musicians who would like to increase their ability and experience in interpreting jazz styles. The purpose of this document is: (1) to provide background, style, and performance considerations for Baker’s Clarinet Sonata and Heritage: A Tribute for Great Clarinetists, for Clarinet, Violin, Piano and Double Bass; (2) based on these style elements, to provide suggestions for interpreting jazz-style works for classically trained clarinetists; and (3) to archive Baker’s published and unpublished clarinet compositions. Appendices include transcripts of interviews with David Baker and other experts in this field (James Campbell, Rosana Eckert, Mike Steinel and Steven Harlos).
Date: May 2016
Creator: Lin, Sheng-Hsin
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Biomass-Derived Activated Carbon Through Self-Activation Process (open access)

Biomass-Derived Activated Carbon Through Self-Activation Process

Self-activation is a process that takes advantage of the gases emitted from the pyrolysis process of biomass to activate the converted carbon. The pyrolytic gases from the biomass contain CO2 and H2O, which can be used as activating agents. As two common methods, both of physical activation using CO2 and chemical activation using ZnCl2 introduce additional gas (CO2) or chemical (ZnCl2), in which the CO2 emission from the activation process or the zinc compound removal by acid from the follow-up process will cause environmental concerns. In comparison with these conventional activation processes, the self-activation process could avoid the cost of activating agents and is more environmentally friendly, since the exhaust gases (CO and H2) can be used as fuel or feedstock for the further synthesis in methanol production. In this research, many types of biomass were successfully converted into activated carbon through the self-activation process. An activation model was developed to describe the changes of specific surface area and pore volume during the activation. The relationships between the activating temperature, dwelling time, yield, specific surface area, and specific pore volume were detailed investigated. The highest specific surface area and pore volume of the biomass-derived activated carbon through the self-activation process …
Date: May 2016
Creator: Xia, Changlei
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Black Males' Treatment Experiences in Mental Health Court: A Phenomenological Analysis (open access)

Black Males' Treatment Experiences in Mental Health Court: A Phenomenological Analysis

Mental health courts (MHCs) are part of an umbrella of specialty courts in which court officials, law enforcement, and treatment providers work together to seek alternative solutions to failed traditional approaches to justice. Researchers investigating MHCs indicated that the courts may be helpful in reducing recidivism and introducing offenders with mental health disorders to treatment services. I used the qualitative method of phenomenology to understand the experiences of young adult Black male clients' perceptions of mental health treatment in MHCs. Twelve participants ranged in age from 21-40 years. The research team identified three themes -- (a) helpful treatment factors, (b) relational growth, (c) treatment barriers – and five subthemes: (a) internal growth, (b) relational growth, (c) behavioral growth, (d) factors of marginalization, and (e) interpersonal barriers. Meaning pertaining to findings and implications for research and practice are discussed.
Date: December 2016
Creator: Stare, Bryan
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Brand Management Capability and Brand Performance (open access)

Brand Management Capability and Brand Performance

Brands are intangible assets that provide companies with the potential to extract higher rents or prices from customers. However, only few organizations are able to build and sustain brands over a long period of time. Brand management capability - the organization's ability to build and sustain brands becomes important for achieving sustainable competitive advantage. Despite the importance of brand management capability to organizations, majority of the brand management literature has primarily focused on the consumer perspective of brands. This gap in knowledge about the components of brand management capability impedes firms from replicating brand successes, and makes them reliant on brand managers. More recently, there have been multiple calls in literature to identify marketing-related organizational capabilities, which can provide organizations with a sustainable competitive advantage. The focus on developing marketing-based capabilities comes at a time when marketing is losing its influence in organizations. To this end, the current dissertation uses organizational capability theory and literature on brand management to identify the primary resource (intellectual capital comprising of structural, human, and relational capital), organizational culture type (clan, adhocracy, hierarchy, and market), and processes (strategic brand management, internal branding, and market information processes comprising of information acquisition, information transmission, conceptual utilization, and …
Date: August 2016
Creator: Iyer, Pramod P
Object Type: Thesis or Dissertation
System: The UNT Digital Library
British-Style Brass Bands in U.S. Colleges and Universities (open access)

British-Style Brass Bands in U.S. Colleges and Universities

Since the 1980s, British-style brass bands - community ensembles modeled after the all-brass and percussion bands of Great Britain - have enjoyed a modest regeneration in the United States. During this same period, as many as 23 colleges and universities in the U.S. have founded their own curricular or extra-curricular brass band. The purpose of this research study was: to discover which schools sponsor a brass band currently; to discover which schools formerly sponsored a brass band but have since discontinued it; to describe the operational practices of collegiate brass bands in the U.S.; and to determine what collegiate brass band conductors perceive to be the challenges and benefits of brass band in the curriculum. Data for the study were collected between February, 2015 and February, 2016 using four custom survey instruments distributed to conductors of college and university brass bands. The results showed that 11 American collegiate institutions were sponsoring a brass band during the period of data collection. Additional findings included descriptions of the operations of collegiate brass bands, such as availability of credit, rehearsal time, and instrumentation. Results also included the conductors' reported perceptions that both challenges and benefits are inherent in student brass band participation, and …
Date: December 2016
Creator: Taylor, Mark A. (Mark Amdahl)
Object Type: Thesis or Dissertation
System: The UNT Digital Library