UNT Theses and Dissertations - 22 Matching Results

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Analysis of Interrelationships between Climate Change and Cotton Yield in Texas High Plains

Description: The Texas High Plains produces the most substantial amount of cotton in Texas. The region is a semi-arid area with limited precipitation, and it is, therefore, susceptible to climate change. Cotton production in the Texas High Plains is mostly dependent on irrigation to increase yield. The overall goal of this research was to study the interrelationships between climate change and cotton yield using correlation analysis and also to study how climate has changed in the region using trend analys… more
Date: May 2020
Creator: Sarbeng, Lorenda
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

App Stole My Gayborhood? A Transforming Ethos at the Intersection of Queer Urban Life and Cyberspace(s)

Description: This thesis demonstrates a queer perspective stemming from a qualitative analysis of data gathered in interviews with LGBTQ+ people to analyze a transforming ethos of gayborhoods and queer desires. In particular, the research focuses on the interactive relationship between self-identified lesbian, gay, bisexual, transgender, and queer (LGBTQ+) participants; the cyberspace(s) of LGBTQ+ mobile-dating applications (apps); and tangible urban places. The topic of gayborhood demise and whether such p… more
Date: May 2021
Creator: Stucky, Farrell
Item Type: Refine your search to only Thesis or Dissertation
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Assessing Agricultural and Hydrologic Potential of Ancestral Puebloan Community Centers using Open Source Data

Description: The Pueblo III period marks a critical shift in settlement location of Ancestral Puebloan people within the Mesa Verde region. Community centers during the Pueblo I and Pueblo II periods were built on mesa tops, whereas canyon-rims and alcoves became the preferred settlement location during the Pueblo III period. Beginning in the Pueblo I period, community centers consisted of linear roomblock villages. By the late Pueblo II period great house community centers influenced by the Chaco culture … more
Date: May 2020
Creator: Zarzycka, Sandra Elzbieta
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Assessing Rainfall Interception by Urban Tree Canopies in Denton, Texas

Description: Rainfall interception is one mechanism by which tree canopies can reduce surface runoff in urban areas. The objectives of this research were to: 1) quantify rainfall interception by urban tree canopies, and 2) determine the influence of vegetation and microenvironmental factors on rainfall interception rates. In the city of Denton, Texas, 30 mature post oak (Quercus stellata) and blackjack oak (Quercus marilandica) trees were selected for study. Trees were assigned to one of three categories… more
Date: May 2017
Creator: Edington, Patrick
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Assessment of Riparian Buffer Effectiveness in the Upper Hickory Creek Watershed: A GIS Approach Using the Riparian Buffer Delineation Equation (RBDE) and the Buffer Improvement Potential Percentage (BP)

Description: As population increases and urbanization occurs, watershed management will be critical in the protection of water resources in North Central Texas. By 2040, Denton County will nearly double its 2010 population. The Upper Hickory Creek Watershed lies west of Denton and empties into Lake Lewisville. Lake Lewisville provides drinking water for Denton, Dallas, and other neighboring cities. Mitigation of non-point source pollutants as a result of urban and agricultural practices is essential to prot… more
Date: May 2019
Creator: Yesildirek, Monica Veale
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Automated Tree Crown Discrimination Using Three-Dimensional Shape Signatures Derived from LiDAR Point Clouds

Description: Discrimination of different tree crowns based on their 3D shapes is essential for a wide range of forestry applications, and, due to its complexity, is a significant challenge. This study presents a modified 3D shape descriptor for the perception of different tree crown shapes in discrete-return LiDAR point clouds. The proposed methodology comprises of five main components, including definition of a local coordinate system, learning salient points, generation of simulated LiDAR point clouds wit… more
Date: May 2018
Creator: Sadeghinaeenifard, Fariba
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Death and Life of Great American Malls: (Un)Spectacular Creative Destructions, Luxury Mixed-Use Developments, and Gentrification in Dallas-Fort Worth

Description: Mall after mall was built in American cities, exhaustively emulated by developers often working in concert with civic governments. In service of capital, neoliberal urban governance engages in the risky subsidization of spatio-spectacle production, working together with private business entities to bolster tax revenue and aid in private capital accumulation. The extensive replication of malls in close geographic proximity to one another across the American landscape, erected through the neolibe… more
Date: May 2022
Creator: Kirk, Richard L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Developing a Soil Moisture-Based Irrigation Scheduling Tool (SMIST) Using Web-GIS Technology

Description: Software as a service (SaaS) is a primary working pattern and a significant application model for next generation Internet application. Web GIS services are the new generation of the Software as a service that can provide the hosted spatial data and GIS functionalities to the practical customized applications. This study focused on developing a webGIS based application, Soil Moisture-Based Irrigation Scheduling Tool (SMIST), for predicting soil moisture in the next seven days using the soil moi… more
Date: May 2018
Creator: Nikfal, Mohammadreza
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Geography of Partial-Market Exits: Applying Geospatial and Econometric Methods to Analyze 2017 Department Store Closures in the United States

Description: Many factors have prompted the adoption of partial-market exit strategies in retail as a means of reducing cost and minimizing risk. These mass closures have become more frequent in recent years. Marketers and economists have offered explanations for these closures linked to the rise of e-commerce, the real estate cycle and general changes in consumer taste. The research here marks an attempt to apply geospatial and econometric methods to better understand what factors explain the spatial varia… more
Date: May 2019
Creator: Reed, Connor
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

How Receiving Communities Structure Refugee Settlement Experiences: The Case of Burmese Immigrants in DFW

Description: The Dallas-Forth Worth Metroplex (DFW) serves as a diverse resettlement location for globally displaced refugees. While research examines how the nation impacts refugee resettlement, studies that examine the role of the city and community in placemaking are still lacking. In city resettlement investigations, research often focuses broadly on advocacy and political movements rather than the impacts of local-level structures and policies. In this paper, I develop an evaluation model using Jenny P… more
Date: May 2023
Creator: Stewart, Kaitlin Victoria
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Improvement of the Soil Moisture Diagnostic Equation for Estimating Root-Zone Soil Moisture

Description: Soil moisture information can be used accurately in determining the timing and amount of irrigation applied to plants. Pan and Pan et al. proposed a robust and simple daily diagnostic equation for estimating daily soil moisture. The diagnostic equation evaluates the relationship between the soil moisture loss function and the summation weighted average of precipitation. The loss function uses the sinusoidal wave function which employs day of the year (DOY) to evaluate the seasonal variation in … more
Date: May 2018
Creator: Omotere, Olumide Olubunmi
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Public Market Trade Areas: Local Goods, Farmers, and Community in the U.S. Southwest Region, 1996-2016

Description: The number of public markets in the United States increased from more than 300 in the 1970s to more than 8,600 by 2016. This increase in markets is related to changes in food production, localism and the local food systems movement, socioeconomic changes, cultural changes, and perceptions of embeddedness. Research on the underlying conditions for the success of public markets is scant in the United States, and especially in the USDA Southwest Region. This study provides analysis of public marke… more
Date: May 2018
Creator: Oppenheim, Vicki Ann
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Quantification of the Seasonality and Vertical Dispersion Environment of PM2.5 Variation: A Comparative Analysis of Micro-Scale Wind-Based Buffer Methods

Description: Increasing PM2.5 (particulate matter smaller than 2.5 micrometers) poses a significant health risk to people. Understanding variables critical to PM2.5 spatial and temporal variation is a first step towards protecting vulnerable populations from exposure. Previous studies investigate variables responsible for PM2.5 variation but have a limited temporal span. Moreover, although land-use classes are often taken into account, the vertical environment's influence (e.g., buildings, trees) on PM2.5 c… more
Date: May 2023
Creator: Ray, Noah R.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Reconstructing Identity with Urban Community Agriculture: How Refugees Confront Displacement, Food Insecurity, and Othering through Community Farming

Description: Ethnic and religious conflict, and the deepening of capitalism have led to global diaspora at unprecedented levels. The United Nations High Commissioner for Refugees reported that as of 2015, 1 in every 122 persons worldwide were either a refugee, internally displaced, or seeking asylum. The U.S. currently admits the largest number of refugees worldwide. However, policies fail to reflect the multitude of elements that constitute successful resettlement. Moreover, many refugees come from farming… more
Date: May 2017
Creator: Griffin, Marinda
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Renewable Electricity in DFW: Access, Distribution, and Consumer Awareness

Description: Texas is the leading producer of renewable energy in the U.S, and Dallas-Fort Worth (DFW) is the largest metropolitan area in the state. Texas has a deregulated energy market, with three types of providers: privatized, public-owned, and co-operatives. Privatized providers compete in the deregulated market, and consumers choose between hundreds of electricity retailers. Public-owned providers are owned by the municipality, and electricity consumers that live within the city limits must use the m… more
Date: May 2023
Creator: Greer, Marissa
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Seeds of Disempowerment: Bt cotton and Accumulation by Dispossession in the States of Maharashtra, Telangana, and Andhra Pradesh in India

Description: In 1991, India adopted neoliberalism, a system of political economic practices that promotes private property and free trade, as its political and economic system to promote development in their country. India's neoliberal reform has created issues surrounding human development, resource accumulation, and power struggles. Eleven years later, in 2002, Bt cotton was introduced to the Indian agricultural sector. This research examines how the genetically modified organism Bt cotton is being used t… more
Date: May 2018
Creator: Hoyt, Andrew
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Soil Carbon Accumulation in an Urban Ecosystem: Canopy Cover and Management Effects

Description: Black carbon (BC), a stable form of organic carbon (OC), is a byproduct of the incomplete combustion of biomass, biofuels, and fossil fuel. The main objectives of this research are to examine the spatial distribution of OC and BC in urban soil and determine the influence of tree canopy cover and landscape maintenance on soil carbon accumulation. Soil sampling was conducted at 29 sites throughout the City of Denton, Texas, in May 2019. Samples were collected from underneath post oak canopies and… more
Date: May 2020
Creator: Kang, Katherina A
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

A Spatial Decision Support System to Dynamically Compute and Map Neighborhood Indices

Description: Neighborhoods are organic entities that are in a state of constant change and are driven by the specific context of the problem being investigated. The subsequent lack of consensus on a universal geographic definition for what constitutes a neighborhood can lead to biased interpretations of relationships between human activities and place. Further, while existing geographical information system software allows users to combine a range of geographic objects to generate regional units of analyses… more
Date: May 2020
Creator: Barnett, Melissa Marie
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Urban Trees as Sinks for Soot: Deposition of Atmospheric Elemental Carbon to Oak Canopies and Litterfall Flux to Soil

Description: Elemental carbon (EC), a product of incomplete combustion of fossil fuels and biomass, contributes to climate warming and poor air quality. In urban areas, diesel fuel trucks are the main source of EC emissions from mobile sources. After emission, EC is deposited to receptor surfaces via two main pathways: precipitation (wet deposition) and directly as particles (dry deposition). Urban trees may play an important role in removing EC from the atmosphere by intercepting and delivering it directly… more
Date: May 2018
Creator: Rindy, Jenna
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Using Machine Learning to Develop a Calibration Model for Low-Cost Air Quality Sensors Deployed during a Dust Event

Description: Low-cost sensors have the potential to create dense air monitoring networks that help enhance our understanding of pollution exposure and variability at the individual and neighborhood-level; however, sensors can be easily influenced by environmental conditions, resulting in performance inconsistencies across monitoring settings. During summer 2020, 20 low-cost particulate sensors were deployed with a reference PM2.5 monitor in Denton, Texas in preparation for calibration. However, from mid to … more
Date: May 2021
Creator: Hickey, Sean
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

What Would a Waterbird Do? An Annual Study of 13 Urban Wetlands in Frisco, Texas

Description: Intention for this study is driven by finding patterns that may be shown to reveal primary factors of influence for the abundance and diversity of wetland birds. These correlations may be used to promote wetland management strategies for the benefit of waterbird species, and help illuminate current local wetland conditions for waterbirds, respectively. The idea is to help enliven individuals to become a more conscious steward and manipulator of our environment through incorporating structural a… more
Date: May 2020
Creator: Proctor, Jayce Alan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Women in Wrestling Arenas: How Globalization, Socially Produced Spaces, and Commodification Impact their Portrayal and Empowerment Post Women's Revolution

Description: The Women's Revolution in 2015 has led to a drastic shift in the ways women are portrayed in professional wrestling. The Women's Revolution came as a result of the social unrest over the lack of time women were receiving on the televised shows. Where women's storylines had centered on their sexuality, they are now presented as equal to their male counterparts after the Women's Revolution. Through an exploration of concepts in globalization, commodification, and socially produced spaces, this re… more
Date: May 2020
Creator: Kohlmeyer, Collin
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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