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Proteomic Responses in the Gill of Zebrafish Following Exposure to Ibuprofen and Naproxen (open access)

Proteomic Responses in the Gill of Zebrafish Following Exposure to Ibuprofen and Naproxen

Non-steroidal anti-inflammatory drugs (NSAIDs) are among the most abundant environmental pharmaceutical contaminants. In this study, a proteomic analysis was conducted to identify proteins differentially expressed in gill tissue of zebrafish (Danio rerio) after a 14-day exposure to the NSAIDs ibuprofen or naproxen. A total of 104 proteins with altered expression as indicated by 2-dimensional electrophoresis were analyzed by liquid chromatography with ion trap mass spectrometry (MS/MS). A total of 14 proteins fulfilled our requirements for identification which included consistency among replicate gels as well as successful MS/MS ion searches with the MASCOT database. The most prominent feature of the differential protein expression observed after NSAID exposure was an up-regulation of proteins belonging to the globin family which are involved in the transport of oxygen from gills and availability of heme molecules required for synthesis of cyclooxygenase. Differential expression was observed at exposure concentrations as low as 1-10 µg/L indicating that altered gene expression may occur in fish subjected to environmentally realistic levels of NSAID exposure.
Date: August 2012
Creator: Adhikari, Prem R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Interpersonal Factors Related to the Pursuit of a Higher Education Among First Generation Undergraduate Students (open access)

Interpersonal Factors Related to the Pursuit of a Higher Education Among First Generation Undergraduate Students

The typical educational stressors experienced by college students, in conjunction with developmental stressors such as separation from parents, individuation, and perceived social support, can interact to impact adaptation significantly. First generation college students (students who are the first in their family to attend college) can experience stressors beyond the typical educational stressors experienced by later generation college students, including lack of support from family and peers as well as financial difficulties that can interact to impact the pursuit of an education beyond the undergraduate level. The present study examined factors that may be especially influential in the pursuit of a higher education for first generation college students. Results indicated that aspects of family enmeshment were related to academic motivation for first generation students, but not for later generation students. Exploratory analysis showed that family and finances were mentioned more often among first generation students when compared to later generation students as stressors that strongly influence the desire to continue beyond the undergraduate level.
Date: May 2012
Creator: Aguirre, Jacqueline S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
General Satisfaction of Students in 100% Online Courses in the Department of Learning Technologies at the University of North Texas (open access)

General Satisfaction of Students in 100% Online Courses in the Department of Learning Technologies at the University of North Texas

The purpose of this study was to examine whether there are significant relationships between the general satisfaction of students and learner-content interaction, learner-instructor interaction, learner-learner interaction, and learner-technology interaction in 100% online courses. There were 310 responses from the students. This study did not use data from duplicate students and instructors. Excel was used to find duplicate students and instructors; therefore, 128 responses were deleted. After examination of box plots, an additional four cases were removed because they were outliers on seven or more variables. Nineteen responses were deleted because they did not answer all questions of interest, resulting in a total sample of 159 students. Multiple regression analysis was used to examine the relationship between the four independent variables and the dependent variable. In addition to tests for statistical significance, practical significance was evaluated with the multiple R2 , which reported the common variance between independent variables and dependent variable. The two variables of learner-content and learner-instructor interaction play a significant role in predicting online satisfaction. Minimally, the variable learner-technology can predict online satisfaction and is an important construct that must be considered when offering online courses. Results of this study provide help in establishing a valid and reliable …
Date: May 2012
Creator: Ahn, Byungmun
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Real Analyticity of Hausdorff Dimension of Disconnected Julia Sets of Cubic Parabolic Polynomials (open access)

Real Analyticity of Hausdorff Dimension of Disconnected Julia Sets of Cubic Parabolic Polynomials

Consider a family of cubic parabolic polynomials given by for non-zero complex parameters such that for each the polynomial is a parabolic polynomial, that is, the polynomial has a parabolic fixed point and the Julia set of , denoted by , does not contain any critical points of . We also assumed that for each , one finite critical point of the polynomial escapes to the super-attracting fixed point infinity. So, the Julia sets are disconnected. The concern about the family is that the members of this family are generally not even bi-Lipschitz conjugate on their Julia sets. We have proved that the parameter set is open and contains a deleted neighborhood of the origin 0. Our main result is that the Hausdorff dimension function defined by is real analytic. To prove this we have constructed a holomorphic family of holomorphic parabolic graph directed Markov systems whose limit sets coincide with the Julia sets of polynomials up to a countable set, and hence have the same Hausdorff dimension. Then we associate to this holomorphic family of holomorphic parabolic graph directed Markov systems an analytic family, call it , of conformal graph directed Markov systems with infinite number of edges in …
Date: August 2012
Creator: Akter, Hasina
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Relationships Among Self-esteem, Psychological and Cognitive Flexibility, and Psychological Symptomatology (open access)

Relationships Among Self-esteem, Psychological and Cognitive Flexibility, and Psychological Symptomatology

Previous findings on the relationship between self-esteem and psychological outcomes are inconsistent. Therefore it appears that self-esteem, while related to crucial variables, does not provide a clear, direct, and comprehensive prediction of psychological symptoms. Thus, it was hypothesized that the relationship between self-esteem and symptomatology would be moderated by broader measures of how one interacts with emotional and cognitive stimuli.The purpose of this study was to examine the influence of self-esteem, psychological flexibility, and cognitive flexibility on psychological symptomatology. A sample of 82 undergraduate students at the University of North Texas completed self-report questionnaires measuring low self-esteem, psychological flexibility, measured inversely as inflexibility, cognitive flexibility, and psychological symptoms. Results of the study suggest that self-esteem (?= -0.59, p < 0.001) and flexibility (both psychological (?= 0.36, p = 0.001) and cognitive (?= 0.21, p < 0.05) are significant predictors of psychological symptoms. In other words, self-esteem is positively correlated with psychological symptoms, while psychological and cognitive flexibility are negatively correlated with psychological symptoms. Neither form of flexibility moderated the relationship between self-esteem and psychological symptoms in this sample. The findings of the current study are discussed as well as suggestions for further research related to self-esteem, psychological and cognitive flexibility, …
Date: December 2012
Creator: Al-Jabari, Rawya M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Conductor Awareness of, Knowledge of, and Attitude Toward Sound Intensity Levels Generated During Ensemble-based Instructional Activities in College-level Schools of Music (open access)

Conductor Awareness of, Knowledge of, and Attitude Toward Sound Intensity Levels Generated During Ensemble-based Instructional Activities in College-level Schools of Music

In 2011, the National Association of Schools of Music (NASM) took an official position to recognize the importance of hearing health and injury prevention as a standard for all member-accredited institutions. This is the largest national acknowledgement promoting hearing health and safety within the music discipline and among students seeking a music degree in the United States. The purpose of the study is to describe what conductors (i.e., instructors) of college-based ensembles know about hearing health and the generation of sound intensity levels. The study aimed to describe the 1) current state of conductors’ awareness and knowledge of sound intensity levels, 2) current attitudes of conductors toward learning and sharing knowledge of sound intensity levels, and 3) current teaching practices of conductors in regard to equipment usage (e.g. sound level meter, noise dosimeter, hearing protection devices) relating to sound measurement and exposure. Findings indicate 80.2% of conductors (N = 162, 66% employed by NASM-accredited institutions) agree that sounds generated during ensemble-based instructional activities (EBIAs) in college-level schools of music are capable of harming human hearing, but 24.1% “do not know” if EBIAs they conduct ever exceed sound intensity levels capable of harming human hearing, 54.9% do not know “what services …
Date: August 2012
Creator: Albin, Aaron J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
British Labour Government Policy in Iraq, 1945-1950 (open access)

British Labour Government Policy in Iraq, 1945-1950

Britain during the Labour government's administration took a major step toward developing Iraq primarily due to the decision of Ernest Bevin, the Foreign Minister, to start a new British policy toward the Iraqi regimes that would increase the British influence in the area. This led to Bevin's strategy of depending on guiding the Iraqi regime to make economic and political reforms that would lead to social justice.
Date: December 2012
Creator: Alburaas, Theyab
Object Type: Thesis or Dissertation
System: The UNT Digital Library

ASIS&T Special Interest Groups (SIGs): New Member/First Conference Brunch 2012

Presentation for the 2012 American Society for Information Science and Technology (ASIS&T) Annual Meeting. This presentation introduces new members and conference attendees to the Special Interest Group, International Information Issues (SIG-III).
Date: October 28, 2012
Creator: Alemneh, Daniel Gelaw
Object Type: Presentation
System: The UNT Digital Library

Content Divide: Africa and the Global Knowledge Footprint

This presentation discusses Africa and the global knowledge footprint.
Date: October 2012
Creator: Alemneh, Daniel Gelaw
Object Type: Presentation
System: The UNT Digital Library

The Origins of SIG-III and Its 30 Years' Journey: Visions and Reflections

This presentation discusses the origins of SIG-III and its 30 years' journey. In light of the 75th American Society for Information Science and Technology (ASIS&T) Anniversary Celebration and the 30th celebration of International Information Issues (III), the participants on this panel will discuss the origins of the Special Interest Group for International Information Issues (SIG-III) of ASIS&T and its early years. In addition to the reflections of the last 30 years, the authors look forward and discuss the future of the SIG.
Date: October 2012
Creator: Alemneh, Daniel Gelaw
Object Type: Presentation
System: The UNT Digital Library
SIG Annual Activities Report and SIG-Of-The-Year Criteria and Checklist: International Information Issues (SIG-III) (open access)

SIG Annual Activities Report and SIG-Of-The-Year Criteria and Checklist: International Information Issues (SIG-III)

Report on the annual activities from 2011-2012 for the Special Interest Group for International Information Issues (SIG-III) and the SIG-of-the-Year criteria and checklist.
Date: 2012
Creator: Alemneh, Daniel Gelaw
Object Type: Report
System: The UNT Digital Library

Toward Best Practices in Integrating ETDs and Associated Data: UNT's Approach

Poster presented at the 2012 Texas ETD Annual Conference. This poster describes the University of North Texas (UNT) Libraries approach toward best practices in integrating ETDs and associated data.
Date: February 2012
Creator: Alemneh, Daniel Gelaw
Object Type: Poster
System: The UNT Digital Library

Empowering Digital Libraries Users through Combining Taxonomies with Folksonomies

This paper accompanies a poster presentation discussing empowering digital libraries users through combining taxonomies and folksonomies.
Date: October 2012
Creator: Alemneh, Daniel Gelaw & Rorissa, Abebe
Object Type: Paper
System: The UNT Digital Library

Empowering Digital Libraries Users through Combining Taxonomies with Folksonomies [Poster]

Poster presented at the 2012 ASIS&T Annual Meeting. This poster presents discussion on empowering digital library users through combining taxonomies and folksonomies.
Date: October 2012
Creator: Alemneh, Daniel Gelaw & Rorissa, Abebe
Object Type: Poster
System: The UNT Digital Library

The Origins of SIG-III and Its 30 Years' Journey: Visions and Reflections

This paper discusses the origins of the Special Interest Group for International Information Issues (SIG-III) of the American Society for Information Science & Technology (ASIS&T) and its early years.
Date: October 2012
Creator: Alemneh, Daniel Gelaw; Carbo, Toni; Caidi, Nadia; Gruzd, Anatoliy & Rorissa, Abebe
Object Type: Paper
System: The UNT Digital Library

Lifecycle Management of ETDs: Toward A Collaborative Approach To Stakeholders' Involvement In ETDs Curation

This presentation discusses the management and curation of Electronic Theses and Dissertations (ETDs). It highlights and discusses the early findings of an IMLS-funded project on Lifecycle Management of ETDs.
Date: May 2012
Creator: Alemneh, Daniel Gelaw; Henry, Geneva & Stark, Shannon
Object Type: Presentation
System: The UNT Digital Library

"Mapping the Southwest": UNT-UTA Collaborative Project

This presentation discusses a collaborative project between the University of North Texas (UNT) and the University of Texas at Arlington (UTA) to digitize 5,000 historically-significant, rare maps of the American southwest.
Date: May 2012
Creator: Alemneh, Daniel Gelaw; Jones, Jerrell & Hodges, Ann
Object Type: Presentation
System: The UNT Digital Library
The Hexagon, Volume 103, Number 1, Spring 2012 (open access)

The Hexagon, Volume 103, Number 1, Spring 2012

Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date: Spring 2012
Creator: Alpha Chi Sigma
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
The Hexagon, Volume 103, Number 2, Summer 2012 (open access)

The Hexagon, Volume 103, Number 2, Summer 2012

Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date: Summer 2012
Creator: Alpha Chi Sigma
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
The Hexagon, Volume 103, Number 3, Fall 2012 (open access)

The Hexagon, Volume 103, Number 3, Fall 2012

Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date: Autumn 2012
Creator: Alpha Chi Sigma
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Southwest Retort, Volume 64, Number 4, January 2012 (open access)

Southwest Retort, Volume 64, Number 4, January 2012

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: January 2012
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Southwest Retort, Volume 64, Number 5, February 2012 (open access)

Southwest Retort, Volume 64, Number 5, February 2012

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: February 2012
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Southwest Retort, Volume 64, Number 6, March 2012 (open access)

Southwest Retort, Volume 64, Number 6, March 2012

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: March 2012
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Southwest Retort, Volume 64, Number 7, April 2012 (open access)

Southwest Retort, Volume 64, Number 7, April 2012

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: April 2012
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library