Browsing by Author "Morgan, Cristine"
Now showing items 1-20 of 30
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Miles, Misty Vidrine (2019-07-09)Though Unmanned Aerial System (UAS) technology is a promising tool that can aid farmers in production efficiency, little research has been found on the adoption/acceptance of this new technology in agriculture. The study ...
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Sjolander, Andrew J. (2010-10-12)The ability to map the profit made across a cotton field would enable producers to see in detail where money is being made or lost on their farms. This ability, which requires sitespecific knowledge of yield, fiber quality, ...
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Russell, George 1983- (2012-11-28)Expansive clay mineral contamination of road aggregate materials in Texas is a persistent problem. Hydrous layer silicate minerals - particularly smectites - in concretes are associated with decreased strength and durability ...
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Collins, Jamie Lynne (Texas A&M University, 2004-11-15)Controlled-source, azimuthal, time-domain, electromagnetic (TDEM) surveys were conducted over a schist formation with uniformly striking, nearly vertical foliation. Direct current electrical resistivity and seismic ...
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Schielack, Vincent Paul (2012-02-14)For precision agriculture to work, an automated process to collect spatial-variability data within a field is necessary. Otherwise, data collection is prohibitively expensive and time consuming. Furthermore, to minimize ...
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Navarrete Ganchozo, Ronald J. (2011-02-22)Groundwater use is of fundamental importance to meet rapidly expanding urban, industrial, and agricultural water requirements, particularly in semiarid zones. To quantify the current rate of groundwater recharge is thus a ...
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Loy, Sonja Marie (2018-02-14)Wastewater reuse is a practice that has been gaining attention for the past few decades as the world’s population rises and water resources become scarce. This study compared the long-term (15+ years) effects and suitability ...
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Zhang, Yang (2016-05-02)Wood debris is an important C pool in forest ecosystems. Understanding the controls on wood decomposition is necessary for predicting the response of forest ecosystem carbon cycling to management and climate. The productivity ...
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Mannel, Cheryl K. (2009-05-15)Woody encroachment upon grasslands is a global trend that is cause for concern. In the Lampasas Cut Plain of Texas, Ashe juniper is the dominant woody invasive species. Grassland restoration is dependent upon proper seedbed ...
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Mattox, April Marie (2013-07-30)Ecosystem changes from grassland to shrubland in the Rio Grande Plains are thought to have negative effects on the hydrology of the region. The increase in woody plants, known as woody encroachment, may alter the amount ...
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Black, Michael Alexander (2021-06-01)In this dissertation, I estimate the value of soil and water quality improvements using revealed and stated preferences of anglers and farmers, respectively. I also identify the causal effect of a groundwater management ...
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Rouze, Gregory Scott (2019-10-15)Unmanned aerial vehicles (UAVs) offer exciting new potentials within the field of precision agriculture. However, the technology remains in an experimental setting because of questions concerning data quality and quantity. ...
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Mhatre, Pratik Chandrashekhar (2010-10-12)Although recent brownfields redevelopment research using theories of real estate valuation and neighborhood change have indicated negative effects on surrounding residential housing, little evidence exists to show price ...
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Meng, Lei (2010-01-14)This dissertation focuses on examining the relationship between antecedent soil moisture and summer precipitation in the U.S. Great Plains (GP). The influence of Nino sea surface temperatures (SSTs) on summer precipitation ...
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Kobylinski, Catherine (2011-05-06)Forensic soil characterization is an under-explored field in the forensic sciences. One aspect of forensic sciences is Locard’s Exchange Principle, which states that every contact leaves a trace. As soil characterization ...
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Decker, Kathryn T. (2010-07-14)The Edwards aquifer lies in the structurally complex Balcones fault zone and supplies water to the growing city of San Antonio. To ensure that future demands for water are met, the hydrological and geophysical properties ...
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Halligan, Jessi (2012-07-16)This dissertation addresses how Paleoindians used the karst drainage of the Aucilla River in northwestern Florida during the Pleistocene/Holocene transition (approximately 15-10,000 14C yr B.P.). I take a geoarchaeological ...
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Fox, Miranda Lynn (Texas A&M University, 2004-11-15)Sulfate-bearing soils are a problem in highway construction as they combine with materials used for lime stabilization to form minerals, particularly ettringite, that expand and induce heave in the stabilized soil. This ...
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Rathnayake, Sewwandi (2018-05-31)The efficacy of in situ fixing of arsenic (As) and lead (Pb) in a highly contaminated soil was examined using chemical extractions for lability, bioavailability, and bioaccessibility accompanied by spectroscopic verification. ...
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Zhang, Zihan (2018-11-29)Many theoretical methods in the literature have been introduced that require the knowledge of the normal stress and shear stress acting at the contact between the soil particles in the river bed and the fluid (mostly water). ...