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 Degree Level: Master's
A Multimedia Atlas of Dissection for Comparative Anatomy of the Vertebrates

A Multimedia Atlas of Dissection for Comparative Anatomy of the Vertebrates

Access: Use of this item is restricted to the UNT Community.
Date: August 1999
Creator: Curran, Anthony A., Jr.
Description: This interactive multimedia content is part of the thesis that was prepared for the degree of Master of Science in Biology: http://digital.library.unt.edu/ark:/67531/metadc2224. Traditional methods of teaching the laboratory course for Comparative Anatomy of the Vertebrates could be improved by applying current computer technology to construct an interactive, multimedial atlas of dissection. Five specimens used in comparative anatomy courses at most institutions were chosen as representative members of the Phylum Chordata: amphioxus, lamprey, dogfish shark, mud puppy, and cat. Specimens were dissected according to the modified method of Wischnitzer, 1993, and each stage was photographed with a Kodak DC120 digital zoom camera. These images were processed on a Power Macintosh 7600 computer with Adobe Photoshop v. 5.0. The atlas was constructed from these images using Macromedia Authorware v. 4.0.3. Each image contains a series of interactive objects that display a highlight and descriptive text as the cursor passes over each object.
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Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music

Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music

Date: December 2010
Creator: Lucas, Stephen
Description: Pleroma is a digital drama: a work composed of digital animation combined with electroacoustic music, presenting an original dramatic narrative. Pleroma's dramatic elements evoke both the classical form of tragedy and the concept of perceptual paradox. A structural overview of the drama and its characters and a plot synopsis are given to provide context for the critical discussion. Analytical descriptions of Beethoven's Coriolan Overture Op.62 and Mahler's Symphony No. 9 are provided to give background on tragic form and Platonic allegory in music. An investigation into the elements discussed in the analysis of the instrumental works reveals several layers of possible interpretation in Pleroma. Dramatic elements allow for tragic narratives to be constructed, but they are complemented by character associations formed by pitch relationships, stylistic juxtapositions, and instrumentation. A copy of the dramatic text is included to supplement the multimedia production: http://digital.library.unt.edu/ark:/67531/metadc33228/
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Geek As a Constructed Identity and a Crucial Component of Stem Persistence

Geek As a Constructed Identity and a Crucial Component of Stem Persistence

Date: May 2014
Creator: Liggett, Joshua B.
Description: The fields of science, technology, engineering and mathematics (STEM) have long been the bastions of the white male elite. Recently, academia has begun to recognize gender and ethnic disparities. In an effort to expand the recruitment pool for these STEM fields in college, various efforts have been employed nationally at the secondary level. In California, the latest of these efforts is referred to as Linked Learning, a pedagogy that combines college preparation with career preparation. The current study is investigating the connection between what has been referred to in current scholarship as "Geeking Out" with higher academic performance. The phenomenon of “Geeking Out” includes a variety of non-school related activities that range from participating in robotics competitions to a simple game of Dungeons & Dragons. The current project investigates the relationship between long term success in STEM fields and current informal behaviors of secondary students. This particular circumstance where Linked Learning happens to combine with "Geeking Out" is successful due to the associated inclusionary environment. Methods included a yearlong ethnographic study of the Center for Advanced Research and Technology, a Central Valley school with a diverse student body. Through participant observation and interviews, the main goal of this research is ...
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Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies

Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies

Date: May 2014
Creator: Mira, Sebastião Bittencourt de
Description: In several areas around the world, clean water is a precious asset that at anytime, and mainly due to circumstances of weather and climate, can become scarce. Mainly in the dry and remote places, people suffer with lack of water. A solution for this suffering can be a water desalination system, which makes water potable and usable for industry. That solution inherently, brings the problem of power requirement, which is sometimes arduous to accomplish in such remote areas of difficult access and long distances to overcome to build the infrastructure required to operate an electric power plant. Texas and the USA also face this scenario for many regions, for which the government has been creating some programs and driving forward incentives, looking for solutions to support water desalination. Water desalination has future applications for municipalities water-consuming or for arid and remote regions, as well as for industries that rely on heavy water usage, such as natural gas drilling operations, for which millions of gallons are trucked overland to the site and also hauled away afterwards, when the waste water produced must be treated. This thesis created the concept of autonomy for water desalination plants replacing the actual power supply from ...
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Gender, Peace and Democracy

Gender, Peace and Democracy

Date: August 2013
Creator: Kelly, Eliza G.
Description: In the last several decades there has been immense international emphasis and promotion of gender equality and female participation in the social, economic, and political spheres of society. There has also been an increase in civil conflict recurrence in countries as well as countries transitioning to democracy. This study explores the effect of female participation on peace and democracy. In the first part, I focus on the effect female participation has on decreasing the risk of peace failing in post-civil conflict countries. In many countries, women are marginalized and conflict further marginalizes them. However, I argue that the post-conflict environment allows women to escape this cycle of marginalization and their inclusion and participation is very crucial to sustaining peace. I find that female political and social female decreases the risk of peace failing in post-civil war countries. In the second part, I focus on the effect female participation has on decreasing the risk of authoritarian reversals in countries that have transitioned to and toward democracy. Previous empirical research has focused on women’s role in transitions to democracy, factors that contribute to the survival of democracy, as well as how women’s participation affects the stability country. I argue that women’s social, ...
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Is Mindfulness Just Another Ego Depletion Exercise?

Is Mindfulness Just Another Ego Depletion Exercise?

Date: May 2014
Creator: Connally, Melissa Londoño
Description: Given increasing interest in the therapeutic benefits of mindfulness, limitations of its treatment utility are frequently questioned. As such, the purpose of the study was to examine the effects of mindfulness on a subsequent self-control task in a sample of college students. A total of 67 participants were randomly assigned to one of three conditions: a control condition, an experimental mindfulness-only condition or a comparison expectancy-plus-mindfulness condition to investigate the utility of mindfulness practice when motivated by an outcome of increased self-control. Results did not indicate a difference in persistence on a difficult task between conditions, regardless of the manipulation. Conceptual and experimental limitations of current study’s findings, as well as future directions, are discussed.
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Recidivism Among Determinately Sentenced Youth in Texas

Recidivism Among Determinately Sentenced Youth in Texas

Date: May 2014
Creator: Rich, Courtney E.
Description: In Texas, determinate sentencing allows extremely serious and violent delinquents one more chance to change their ways by releasing them to the streets instead of being transferred to prison. This research study examined the recidivism outcomes of 416 serious and violent juvenile offenders previously exposed to rehabilitative treatment in the renowned Capital and Serious Violent Offender Treatment Program provided by the Texas Youth Commission. Further, this research study looked to a group of 1,261 determinately sentenced offenders who did not participate in Capital and Serious Violent Offender Treatment Program but were released from Texas Youth Commission as well. Both groups of juveniles were followed for three years following their release from institutionalization. This analysis revealed that 50% of both groups were rearrested at least once during the follow-up period for any offense. Of the Capital and Serious Violent Offender Program participants, 81% were rearrested for at least one new felony offense. Of those non-participants, 78% were rearrested for at least one new felony offense. The factors that served to distinguish both groups included African-American race and a number of delinquent history measures. This study concludes with a discussion of policy implications and suggestions for future research.
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Effect of Dispersed Particles and Branching on the Performance of a Medium Temperature Thermal Energy Storage System

Effect of Dispersed Particles and Branching on the Performance of a Medium Temperature Thermal Energy Storage System

Date: August 2013
Creator: Hasib, A. M. M. Golam
Description: The main objective of my thesis is to develop a numerical model for small-scale thermal energy storage system and to see the effect of dispersing nano-particles and using fractal-like branching heat exchanger in phase change material for our proposed thermal energy storage system. The associated research problems investigated for phase change material (PCM) are the low thermal conductivity and low rate of heat transfer from heat transfer fluid to PCM in thermal energy storage system. In this study an intensive study is carried out to find the best material for thermal storage and later on as a high conductive nano-particle graphite is used to enhance the effective thermal conductivity of the mixed materials. As a thermal storage material molten solar Salt (60% NaNO3+40%KNO3) has been selected, after that detailed numerical modeling of the proposed design has been done using MATLAB algorithm and following the fixed grid enthalpy method. The model is based on the numerical computation of 1-D finite difference method using explicit scheme. The second part of the study is based on enhancing the heat transfer performance by introducing the concept of fractal network or branching heat exchanger. Results from the numerical computation have been utilized for the comparison ...
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Development of a Cost Effective Wireless Sensor System for Indoor Air Quality Monitoring Applications

Development of a Cost Effective Wireless Sensor System for Indoor Air Quality Monitoring Applications

Date: May 2014
Creator: Abraham, Sherin
Description: Poor air quality can greatly affect the public health. Research studies indicate that indoor air can be more polluted than the outdoor air. An indoor air quality monitoring system will help to create an awareness of the quality of air inside which will eventually help in improving it. The objective of this research is to develop a low cost wireless sensor system for indoor air quality monitoring. The major cost reduction of the system is achieved by using low priced sensors. Interface circuits had to be designed to make these sensors more accurate. The system is capable of measuring carbon dioxide, carbon monoxide, ozone, temperature, humidity and volatile organic compounds. The prototype sensor node modules were developed. The sensor nodes were the connected together by Zigbee network. The nodes were developed in such a way that it is compact in size and wireless connection of sensor nodes enable to collect air quality data from multiple locations simultaneously. The collected data was stored in a computer. We employed linear least-square approach for the calibration of each sensor to derive a conversion formula for converting the sensor readings to engineering units. The system was tested with different pollutants and data collected was ...
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A Quantitative Assessment of Site Formation at the Dmanisi Archaeological Site, Republic of Georgia

A Quantitative Assessment of Site Formation at the Dmanisi Archaeological Site, Republic of Georgia

Date: August 2013
Creator: Crislip, Peter S.
Description: The focus of this thesis was to gather and analyze micromorphological and petrographic data on soils at the archaeological site of Dmanisi in order to better understand the extent to which the deposition and alteration of the sediments has affected the preservation of artifacts and faunal remains. A major goal of this research was to test hypothesis related to why bone material is discovered in some strata and not in others. This research focuses on the application of micromorphology (supplemented with other methods) to the soils through the use of petrographic analysis of thin sections and scanning electron microscopy. These techniques complement previous field analyses by providing a quantitative assessment of individual strata through point counting and chemical mapping. The results of this research support the hypothesis that the sediments are predominantly mafic ashes, while showing that there is very little soil development in the strata. This suggests quick episodic burial in a relatively dry climate, confirming the hypothesis for a short time sequence in the strata. Additionally, differential weathering probably did not play a significant role in the differential abundance of bone remains among the strata at Dmanisi.
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