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475 Matching Results
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Analysis of Flows of the Brazos and Trinity Rivers and Tributaries
Report attempting to understand changes in flow characteristics in the Trinity and Brazos Rivers from water resource development and use.
Date:
September 2016
Creator:
Texas Water Development Board
Object Type:
Report
System:
The Portal to Texas History
Final Numerical Model Report for the Brazos River Alluvium Aquifer Groundwater Availability Model
Provides a tool for managing the groundwater resources in the Brazos River Alluvium Aquifer.
Date:
August 2016
Creator:
Ewing, John E. & Jigmond, Marius
Object Type:
Report
System:
The Portal to Texas History
Is 100 Percent Debt Optimal? Three Essays on Aggressive Capital Structure and Myth of Negative Book Equity Firms
This dissertation comprises of three related essays in regard of puzzling negative book equity phenomenon among U.S. public firms. In essay 1, I present the evidence that there is an increasing trend of negative book equity firms over the past 50 years, from 0.3% up to over 5% among publicly traded firms in US. In contrast to previous research which generally classify these firms as distressed firms with highly likelihood of bankruptcy, I propose a new method to separate Healthy Negative Book Equity Firms (HNBEF) from relatively more distressed negative book equity firms. The results show that HNBEF have much higher net income and interest coverage ratio, they survive longer, and pay more dividends. More interestingly, these firms are often actively increase share repurchases and debt issuance. These facts, combined with their strong profitability, indicate that managers of these firms are actively increasing their leverage and choose to be negative book equity firms. To explain the existence of HNBEF, in essay 2, I investigate several possible reasons that may contribute to the extreme leverage of these firms. I find that HNBEF are substantially undervalued by their book assets as stated on the balance sheet. In addition, the value of intangible …
Date:
August 2016
Creator:
Luo, Haowen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sources of Revenue: A History of State Taxes and Fees in Texas, 1972-2016
Report on the history and current status of Texas state revenue sources for the years 1972 to 2016 from the Texas Comptroller of Public Accounts.
Date:
January 2016
Creator:
Texas. Comptroller's Office.
Object Type:
Report
System:
The Portal to Texas History
The Ocean's Hidden Heat
A presentation which analyses how the ocean has heated over many decades.
Date:
December 2016
Creator:
Boyer, Tim
Object Type:
Presentation
System:
The UNT Digital Library
Global, regional, national, and selected subnational levels of stillbirths, neonatal, infant, and under-5 mortality, 1980–2015: a systematic analysis for the Global Burden of Disease Study 2015
Article discusses the generation of updated estimates of child mortality by age group (neonatal, post-neonatal, ages 1–4 years, and under 5) for 195 countries and territories and selected subnational geographies, from 1980–2015, using data from the Global Burden of Disease 2015 Study (GBD 2015).
Date:
October 8, 2016
Creator:
GBD 2015 Child Mortality Collaborators
Object Type:
Article
System:
The UNT Digital Library
The Information Behavior of Individual Investors in Saudi Arabia
Information plays a significant role in the success of investment strategies. Within a non-advisory context, individual investors elect to build and manage their investment portfolios to avoid the cost of hiring professional advisors. To cope with markets’ uncertainty, individual investors should acquire, understand, and use only relevant information, but that task can be affected by many factors, such as domain knowledge, cognitive and emotional biases, information overload, sources’ credibility, communication channels’ accuracy, and economic costs. Despite an increased interest in examining the financial performance of individual investors in Saudi Arabia, there has been no empirical research of the information behavior of individual investors, or the behavioral biases affecting the investment decision making process in the Saudi stock market (SSM). The purpose of this study was to examine this information behavior within a non-advisory contextualization of their investment decision-making process through the use of an online questionnaire instrument using close-ended questions. The significant intervening variables identified in this study influence the individual investors’ information behavior across many stages of the decision making process. While controlling for gender, education, and income, the optimal information behavior of individual investors in the SSM showed that the Experience factor had the greatest negative effect on …
Date:
May 2016
Creator:
Elwani, Nabil Mohammed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Identification of a Potential Factor Affecting Graduation Rates in STEM for Hispanic Students at the University of North Texas, via Analysis of Nonfiction Science Books in Spanish Language for ELLs in the Dallas ISD Schools
Latinos are the largest minority group in the U.S.; however despite the continuous growth of the Hispanic population, Latinos are severely underrepresented in STEM fields. One of the reasons that might explain why Latinos do not major in STEM is the way they encounter science curriculum in primary school. Students' limited proficiency in English may constrain their science achievement when instruction is delivered exclusively in English. A quantitative analysis with graduation rates in STEM from 2009 to 2014 at the University of North Texas was conducted, finding that there is a significant difference (p<0.05) in the number of bachelor's degrees in STEM between Hispanic, White, African American and other student populations. Interviews with teachers, librarians and publishing companies were performed to describe the limited science literature in Spanish at the Dallas ISD schools. Improving science literacy by teaching according to ELLs' linguistic skills and culture may lead to a better understanding of science curriculum throughout their education, which may translate into higher college graduation rates by Hispanic recipients in STEM.
Date:
August 2016
Creator:
Garcia Colin, Monica
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
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
NCCA 2010 Technical Report - National Coastal Condition Assessment 2010
"This document provides supplemental technical information on the background and development of the Benthic Index, Water Quality Index, Sediment Quality Index, and Ecological Fish Tissue Contaminants Index used in the National Coastal Condition (NCCA) 2010 Report."
Date:
January 2016
Creator:
United States. Environmental Protection Agency.
Object Type:
Text
System:
The UNT Digital Library
Texas Family Law Practice Manual, Third Edition, 2016 Practice Notes
Manual compiled by professional lawyers in the state of Texas regarding the processes and forms needed for Family Code law. It includes forms with filler text and extensive explanations about how the forms might be completed depending on various common scenarios, mainly organized by cause of action.
Date:
2016
Creator:
State Bar of Texas. Family Law Section. Council.
Object Type:
Book
System:
The Portal to Texas History
Sabine River Authority of Texas Comprehensive Annual Financial Report: 2016 and 2015
Annual financial report of the Sabine River Authority documenting income, expenditures, and other relevant financial information for fiscal years 2016 and 2015.
Date:
2016~
Creator:
Sabine River Authority of Texas
Object Type:
Report
System:
The Portal to Texas History
Annual Energy Outlook 2016: with Projections to 2040
This report, prepared by the U.S. Energy Information Administration (EIA), presents long-term projections of energy supply, demand and prices through 2040, based on results from EIA's National Energy Modeling System (NEMS).
Date:
August 2016
Creator:
United States. Energy Information Administration.
Object Type:
Report
System:
The UNT Digital Library
The Role of Chosen Creativity Measurements in Observed Relationships to Personality
Creativity is a complex construct that is conceptualized and measured in multiple ways. This study examined the relationship between creativity and personality taking this into account. It was hypothesized that applying different conceptions and measures would cause variation in the creativity-personality relationship. The participants (N = 224) were undergraduate students completed six creativity measures, a personality inventory, and a demographic questionnaire. Personality predicted more creative production (R2 = .277) than creative potential (R2 = .176) and more self-reported creativity (R2 = .348) than that which was externally-rated (R2 = .149). Personality predicted creativity beyond demographic and intellect variables, but the effects varied based on the creativity measure. Openness was most consistently and strongly related to creativity. Other personality factors demonstrated suppression effects in multiple models. Overall, the results suggest that despite relatively small effects of personality on creativity, it can help strengthen prediction in creativity models. Implications for educational settings and future research are discussed.
Date:
May 2016
Creator:
Puryear, Jeb S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Respiratory Responses in the Freshwater Snail (Pomacea Bridgesii) are Differently Affected by Temperature, Body Mass,and Oxygen Availability
Pomacea bridgesii is a snail species native to tropical and sub-tropical regions, where it usually faces variability in water, temperature and oxygen level. This study of the effect of temperature on mass-specific oxygen consumption (ṀO2) and its relation to body weight shows that the ṀO2 of juvenile snails in normoxia (18-21 kPa) acclimated at temperature of 25°C ranged from 5 to 58 µMol O2/g/h, with a mean of 41.4 ± 18.3 µMol O2/g/h (n=7). Adult snails in normoxia at 25°C show less variation, ranging from 13 to 23 µMol O2/g/h , with a mean of 24.4± 6.1 µMol O2/g/h (n=12). The Q10 value for juvenile snails was higher in the interval 25-30°C (Q 10=5.74) than in the interval 20-25°C (Q10= 0.286). In adult snails, Q10 was higher in the interval 20-25°C (Q10=3.19). ṀO2 of P. bridgesii in relation to body weight showed a negative linear correlation between metabolic rate and body weight with b values between 0.23 and 0.76. Also, both juvenile and adult snails exhibited weak O2 regulation. In general, the different respiratory characteristics between juvenile and adult snails might be related to the differences of individual life history, which caused them to perform differently in face of temperatures …
Date:
August 2016
Creator:
Frifer, Wenasa Salem
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
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
Gray Wolf Exposure to Emerging Vector-Borne Diseases in Wisconsin with Comparison to Domestic Dogs and Humans
This article contains the evaluation of temporal and geographic patterns of exposure to these four vector-borne diseases in Wisconsin as the Gray Wolf population expanded between 1985 and 2011.
Date:
November 29, 2016
Creator:
Jara Miller, Rocio F.; Wydeven, Adrian P. & Samuel, Michael D.
Object Type:
Article
System:
The UNT Digital Library
Cognitive Engagement in Later Life: Descriptive and Explanatory Findings
Findings on the relationship between engagement in lifestyle and cognitive functioning are not consistent; some authors report that engagement in lifestyle predicts an individual's cognitive functioning; while other report that an individual's cognitive functioning predicts the type and level of engagement an individual participates in. The current study will use longitudinal data (N = 235) to investigate the bidirectional relationship between engagement (engaged lifestyle activities) and cognition (crystallized & fluid intelligence). Despite inconsistent findings it is proposed that cognitive functioning may be better understood when examining how stimulation of activity, need for cognition, and openness to experience affect engagement in an active lifestyle. As such the current study will investigate if stimulation of activity, need for cognition, and openness to experience moderate the relationship between engaged lifestyles and cognitive functioning. The results, limitations and implications are discussed.
Date:
December 2016
Creator:
Abdullah, Bashir
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Older Americans 2016 : Key Indicators of Well-Being
Older Americans 2016 : Key Indicators of Well-Being is one in a series of periodic reports to the Nation on the condition of older adults in the United States. In this report, 41 indicators depict the well-being of older Americans in the areas of Population, Economics, Health Status, Health Risks and Behaviors, Health Care, and Environment.
Date:
August 2016
Creator:
Federal Interagency Forum on Aging-Related Statistics
Object Type:
Text
System:
The UNT Digital Library
Decision-Making with Big Information: The Relationship between Decision Context, Stopping Rules, and Decision Performance
Ubiquitous computing results in access to vast amounts of data, which is changing the way humans interact with each other, with computers, and with their environments. Information is literally at our fingertips with touchscreen technology, but it is not valuable until it is understood. As a result, selecting which information to use in a decision process is a challenge in the current information environment (Lu & Yuan, 2011). The purpose of this dissertation was to investigate how individual decision makers, in different decision contexts, determine when to stop collecting information given the availability of virtually unlimited information. Decision makers must make an ultimate decision, but also must make a decision that he or she has enough information to make the final decision (Browne, Pitts, & Wetherbe, 2007). In determining how much information to collect, researchers found that people engage in ‘satisficing' in order to make decisions, particularly when there is more information than it is possible to manage (Simon, 1957). A more recent elucidation of information use relies on the idea of stopping rules, identifying five common stopping rules information seekers use: mental list, representational stability, difference threshold, magnitude threshold, and single criterion (Browne et al., 2007). Prior research indicates …
Date:
August 2016
Creator:
Gerhart, Natalie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Texas Transportation Planning for Future Renewable Energy Products: Final Report
Report on Texas transportation planning for future renewable energy products.
Date:
August 2016
Creator:
Astroza, Sebastian; Patil, Priyadarshan N.; Smith, Katherine I.; Kumar, Vivek; Bhat, Chandra R. & Zhang, Zhanmin
Object Type:
Report
System:
The Portal to Texas History
Texas Pattern Jury Charges: Business, Consumer, Insurance and Employment
Guide listing pattern jury charges to assist the bench and bar in preparing the court's charge in the state of Texas, including definitions, instructions, and questions needed to submit jury charges. Indexes to statutes and rules cited, cases cited, and subjects start on page 15.
Date:
2016
Creator:
State Bar of Texas. Committee on Pattern Jury Charges.
Object Type:
Book
System:
The Portal to Texas History
2016 Supplement to Texas Collections Manual: Fourth Edition
Additions and changes to a manual compiled by professional lawyers in the state of Texas regarding the processes and forms needed for debt collection transactions: "This supplement updates the practice notes and forms to conform to changes from the Eighty-fourth Texas legislative session and incorporates relevant statutory case law handed down since 2015. New forms have been added to chapters 1 and 3, and several forms in chapter 35 have been updated. The appendix has been updated to assist attorneys in navigating justice court rules and rules related to expedited trials" (p. 1).
Date:
2016
Creator:
State Bar of Texas
Object Type:
Book
System:
The Portal to Texas History
Influence of High Strain Rate Compression on Microstructure and Phase Transformation of NiTi Shape Memory Alloys
Since NiTi shape memory alloy (SMA) was discovered in the early 1960s, great progress has been made in understanding the properties and mechanisms of NiTi SMA and in developing associated products. For several decades, most of the scientific research and industrial interests on NiTi SMA has focused on its superelastic applications in the biomedical field and shape memory based “smart” devices, which involves the low strain rate (around 0.001 s^-1) response of NiTi SMA. Due to either stress-induced martensite phase transformation or stress induced martensite variant reorientation under the applied load, NiTi SMA has exhibited a high damping capacity in both austenitic and martensitic phase. Recently, there has been an increasing interest in exploitation of the high damping capacity of NiTi SMA to develop high strain rate related applications such as seismic damping elements and energy absorbing devices. However, a systematic study on the influence of strain, strain rate and temperature on the mechanical properties, phase transformation, microstructure and crystal structure is still limited, which leads to the difficulties in the design of products being subjected to high strain rate loading conditions. The four main objectives of the current research are: (1) achieve the single loading and the control of …
Date:
May 2016
Creator:
Qiu, Ying
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library