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Internet Health Information and Patient-health Professional Relationship

Description: The purpose of this study was to investigate patient use and presentation of Internet health information and its effect on patient-health professional relationship from a sample of residents at active adult communities in Texas. Five sites were used to recruit the 260 participants between November 2012 and January 2013. The data were received using a self-administered survey. Using Cronbach’s alpha, logistic regression and regression analysis through SAS, the data revealed that older respond… more
Date: August 2013
Creator: Williams, TimMarie Chloe’ Uvonne
Partner: UNT Libraries
open access

Miniature Mass Spectrometry: Theory, Development and Applications

Description: As mass analyzer technology has continued to improve over the last fifty years, the prospect of field-portable mass spectrometers has garnered interest from many research groups and organizations. Designing a field portable instrument entails more than the scaling down of current commercial systems. Additional considerations such as power consumption, vacuum requirements and ruggedization also play key roles. In this research, two avenues were pursued in the initial development of a portable… more
Date: December 2013
Creator: Fox, James D.
Partner: UNT Libraries
open access

Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys

Description: Over the last two decades there has been an increased interest in understanding the influence of trace boron additions in Ti alloys. These additions refine the prior β grain size in as-cast Ti alloys along with increasing their modulus and yield strength due to the precipitation of TiB. TiB also acts as a heterogeneous nucleation site for α precipitation and has been shown to influence the α phase morphology. B is completely soluble in liquid Ti but has a negligible solubility in both body cent… more
Date: December 2013
Creator: Nandwana, Peeyush
Partner: UNT Libraries
open access

The Politics of Grading: a Comparative Study of High School English Teachers' Personal Beliefs, Self-reported Systems, and Actual Practices

Description: The purpose of this study was to attain and analyze data regarding high school English teachers' beliefs about grading practices and their self-reported grading practices, to identify and understand disparities that exist between teachers' beliefs and self-reported practices, to identify discrepancies between the same self-reported practices and evidence of the practices actually utilized, and to consider teachers' perceptions as to the causes for these discrepancies. Instrumentation for this s… more
Date: May 2013
Creator: Thibodeaux, Lisa M.
Partner: UNT Libraries
open access

A Comparative Study of the Effects of State Grant Reductions on Local Expenditures: Empirical Studies in Massachusetts and Colorado Municipalities

Description: State grants are perceived to mitigate the fiscal disparities among local governments in providing services. However, cutbacks in state grants as a result of changes in state grant policy in different states affect local expenditures dedicated to maintaining service provisions to citizens. This dissertation constructs a theoretical model to explain the extent to which and the ways in which types of state grants, revenue diversity, and form of local government impact local spending and the provi… more
Date: May 2013
Creator: Chaicharoen, Siwaporn
Partner: UNT Libraries
open access

Correlates of Depression in Elderly Asians in the United States

Description: The primary purpose of this study was to examine the correlation between depression and the personal characteristics of Asians who are 50 years or older. The secondary objective was to determine whether Asians 50 years or older living in the United States are more likely to be depressed than other ethnicities. The information for this study was secured from the National Health Interview Survey, spanning the years 2001 to 2010. In this study, I utilized the SAS-Callable SUDAAN statistical syst… more
Date: December 2013
Creator: Kung, Kevin Hsiang-Hsing
Partner: UNT Libraries
open access

Preschool Teachers’ Knowledge of Children’s Mathematical Development and Beliefs About Teaching Mathematics

Description: Early childhood education emphasizes the need of providing high quality early childhood mathematics programs for preschool children. However, there is little research that examines the importance of preschool children’s mathematical knowledge development and teachers’ beliefs about how to teach mathematics to young children. The purposes of this study were to investigate pre-service and in-service preschool teachers’ knowledge of children’s mathematical development and their beliefs about teach… more
Date: December 2013
Creator: Kim, In Hong
Partner: UNT Libraries
open access

Extrapolating Subjectivity Research to Other Languages

Description: Socrates articulated it best, "Speak, so I may see you." Indeed, language represents an invisible probe into the mind. It is the medium through which we express our deepest thoughts, our aspirations, our views, our feelings, our inner reality. From the beginning of artificial intelligence, researchers have sought to impart human like understanding to machines. As much of our language represents a form of self expression, capturing thoughts, beliefs, evaluations, opinions, and emotions which are… more
Date: May 2013
Creator: Banea, Carmen
Partner: UNT Libraries
open access

Simulating the Spread of Infectious Diseases in Heterogeneous Populations with Diverse Interactions Characteristics

Description: The spread of infectious diseases has been a public concern throughout human history. Historic recorded data has reported the severity of infectious disease epidemics in different ages. Ancient Greek physician Hippocrates was the first to analyze the correlation between diseases and their environment. Nowadays, health authorities are in charge of planning strategies that guarantee the welfare of citizens. The simulation of contagion scenarios contributes to the understanding of the epidemic beh… more
Date: December 2013
Creator: Gomez-Lopez, Iris Nelly
Partner: UNT Libraries
open access

Organizational Justice Perception and Its Effects on Knowledge Sharing: a Case Study of Forensics in the Turkish National Police

Description: In today’s economy, organizational knowledge is a fundamental factor for remaining competitive and managing intellectual capital. Knowledge Management aims to improve organizational performance by designing the work environment with necessary tools. Yet, significant amount of knowledge resides within the people in different forms such as experience or abilities. Transferring individual knowledge within members or into organizational repositories is so difficult. Knowledge sharing only occurs u… more
Date: August 2013
Creator: Can, Ahmet
Partner: UNT Libraries
open access

Quantifying Forest Vertical Structure to Determine Bird Habitat Quality in the Greenbelt Corridor, Denton, Tx

Description: This study presents the integration of light detection and range (LiDAR) and hyperspectral remote sensing to create a three-dimensional bird habitat map in the Greenbelt Corridor of the Elm Fork of the Trinity River. This map permits to examine the relationship between forest stand structure, landscape heterogeneity, and bird community composition. A biannual bird census was conducted at this site during the breeding seasons of 2009 and 2010. Census data combined with the three-dimensional map … more
Date: August 2013
Creator: Matsubayashi, Shiho
Partner: UNT Libraries
open access

Automated Real-time Objects Detection in Colonoscopy Videos for Quality Measurements

Description: The effectiveness of colonoscopy depends on the quality of the inspection of the colon. There was no automated measurement method to evaluate the quality of the inspection. This thesis addresses this issue by investigating an automated post-procedure quality measurement technique and proposing a novel approach automatically deciding a percentage of stool areas in images of digitized colonoscopy video files. It involves the classification of image pixels based on their color features using a new… more
Date: August 2013
Creator: Kumara, Muthukudage Jayantha
Partner: UNT Libraries
open access

Effects of Natural/anthropogenic Stressors and a Chemical Contaminant on Pre and Post Mycorrhizal Colonization in Wetland Plants

Description: Arbuscular mycorrhizal fungi, colonizing over 80% of all plants, were long thought absent in wetlands; however, recent studies have shown many wetland plants harbor arbuscular mycorrhizae (AM) and dark septate endophytes (DSE). Wetland services such as biodiversity, shoreline stabilization, water purification, flood control, etc. have been estimated to have a global value of $14.9 trillion. Recognition of these vital services is accompanied by growing concern for their vulnerability and continu… more
Date: August 2013
Creator: Twanabasu, Bishnu Ram
Partner: UNT Libraries
open access

Denial of Risk: the Effects of Intentional Minimization on Risk Assessments for Psychopathic and Nonpsychopathic Offenders

Description: Risk assessments for offenders often combine past records with current clinical findings from observations, interviews, and test data. Conclusions based on these risk assessments are highly consequential, sometimes resulting in increased criminal sentences or prolonged hospitalization. Offenders are therefore motivated to intentionally minimize their risk scores. Intentional minimization is especially likely to occur in offenders with high psychopathic traits because goal-directed deception is … more
Date: August 2013
Creator: Gillard, Nathan D.
Partner: UNT Libraries
open access

Effects of Quantum Coherence and Interference

Description: Quantum coherence and interference (QCI) is a phenomenon that takes place in all multi-level atomic systems interacting with multiple lasers. In this work QCI is used to create several interesting effects like lasing without inversion (LWI), controlling group velocity of light to extreme values, controlling the direction of propagation through non-linear phase matching condition and for controlling the correlations in field fluctuations. Controlling group velocity of light is very interesting b… more
Date: August 2013
Creator: Davuluri, Subrahmanya Bhima Sankar
Partner: UNT Libraries
open access

An Examination of the Similarities and Differences Between Transformational and Authentic Leadership and Their Relationship to Followers' Outcomes

Description: To date there is no comprehensive understanding of what leadership is, nor is there an agreement among different theorists on what a good or effective leader should be. The purpose of this dissertation is to examine the theoretical and empirical similarities and differences of two styles of leadership – transformational and authentic leadership. Follower outcomes, as well as, the effects of trust and psychological capital within these paradigms are of particular interest. Although theoretical … more
Date: August 2013
Creator: McKee, Victoria
Partner: UNT Libraries
open access

Determinacy-related Consequences on Limit Superiors

Description: Laczkovich proved from ZF that, given a countable sequence of Borel sets on a perfect Polish space, if the limit superior along every subsequence was uncountable, then there was a particular subsequence whose intersection actually contained a perfect subset. Komjath later expanded the result to hold for analytic sets. In this paper, by adding AD and sometimes V=L(R) to our assumptions, we will extend the result further. This generalization will include the increasing of the length of the seq… more
Date: May 2013
Creator: Walker, Daniel
Partner: UNT Libraries
open access

Seeking Information After the 2010 Haiti Earthquake: a Case Study in Mass-fatality Management

Description: The 2010 earthquake in Haiti, which killed an estimated 316,000 people, offered many lessons in mass-fatality management (MFM). The dissertation defined MFM in seeking information and in recovery, preservation, identification, and disposition of human remains. Specifically, it examined how mass fatalities were managed in Haiti, how affected individuals sought information about fatalities, and what needs motivated them. Data from 28 in-depth, partially structured interviews, conducted during two… more
Date: May 2013
Creator: Gupta, Kailash
Partner: UNT Libraries
open access

Hispanic Representation in the Superintendency: Perceived Competencies and Organizational Outcomes That Benefit School Districts

Description: This study assessed 40 factors often cited in literature to determine the extent that Hispanic superintendents perceive them as influential when accessing the superintendency. Eight Hispanic superintendents in Texas participated in this qualitative study, which was based on interviews as well as written responses to a survey. This study found that the factors considered most influential to these superintendents were their ability to communicate, self-perception/self-efficacy, and level of over… more
Date: August 2013
Creator: Medina, Fernando
Partner: UNT Libraries
open access

Finding Meaning in Context Using Graph Algorithms in Mono- and Cross-lingual Settings

Description: Making computers automatically find the appropriate meaning of words in context is an interesting problem that has proven to be one of the most challenging tasks in natural language processing (NLP). Widespread potential applications of a possible solution to the problem could be envisaged in several NLP tasks such as text simplification, language learning, machine translation, query expansion, information retrieval and text summarization. Ambiguity of words has always been a challenge in these… more
Date: May 2013
Creator: Sinha, Ravi Som
Partner: UNT Libraries
open access

Tax Compliance in a Social Setting: the Influence of Norms, Perceptions of Fairness, and Trust in Government on Taxpayer Compliance

Description: Many taxing authorities, including those in the United States (U.S.), rely on voluntary tax compliance and continually search for ways to increase tax revenues. Most of these methods are costly and labor intensive, such as audits and penalties for noncompliance. Prior tax compliance research has heavily investigated the influence that economic factors, such as tax rates and penalties, have on individual compliance intentions. However, economic models fail to fully predict individual tax complia… more
Date: August 2013
Creator: Jimenez, Peggy D.
Partner: UNT Libraries
open access

Origin and Role of Factor Viia

Description: Factor VII, the initiator of the extrinsic coagulation cascade, circulates in human plasma mainly in its zymogen form, Factor VII and in small amounts in its activated form, Factor VIIa. However, the mechanism of initial generation of Factor VIIa is not known despite intensive research using currently available model systems. Earlier findings suggested serine proteases Factor VII activating protease, and hepsin play a role in activating Factor VII, however, it has remained controversial. In thi… more
Date: December 2013
Creator: Khandekar, Gauri
Partner: UNT Libraries
open access

Shared Norms, Hierarchical Maintenance, and International Hierarchy

Description: The dissertation studies two aspects of international hierarchy. The world of international politics is not one of completely sovereign states competing in anarchy. Patterns of hierarchy, where a dominant state has legitimate control over some actions of a subordinate state, color the globe. First, I look at shared norms and hierarchy. Most studies concerning hierarchy focus on material maximization as an explanation for hierarchy--if hierarchy increases the wealth and security of two state… more
Date: August 2013
Creator: Kurz, Aaron
Partner: UNT Libraries
open access

Is It More Advantageous to Administer Libqual+® Lite Over Libqual+®? an Analysis of Confidence Intervals, Root Mean Square Errors, and Bias

Description: The Association of Research Libraries (ARL) provides an option for librarians to administer a combination of LibQUAL+® and LibQUAL+® Lite to measure users' perceptions of library service quality. LibQUAL+® Lite is a shorter version of LibQUAL+® that uses planned missing data in its design. The present study investigates the loss of information in commonly administered proportions of LibQUAL+® and LibQUAL+® Lite when compared to administering LibQUAL+® alone. Data from previous administrations o… more
Date: August 2013
Creator: Ponce, Hector F.
Partner: UNT Libraries
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