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Developing a Forest Gap Model to Be Applied to a Watershed-scaled Landscape in the Cross Timbers Ecoregion Using a Topographic Wetness Index (open access)

Developing a Forest Gap Model to Be Applied to a Watershed-scaled Landscape in the Cross Timbers Ecoregion Using a Topographic Wetness Index

A method was developed for extending a fine-scaled forest gap model to a watershed-scaled landscape, using the Eastern Cross Timbers ecoregion as a case study for the method. A topographic wetness index calculated from digital elevation data was used as a measure of hydrologic across the modeled landscape, and the gap model modified to have with a topographically-based hydrologic input parameter. The model was parameterized by terrain type units that were defined using combinations of USDA soil series and classes of the topographic wetness index. A number of issues regarding the sources, grid resolutions, and processing methods of the digital elevation data are addressed in this application of the topographic wetness index. Three different grid sizes, 5, 10, and 29 meter, from both LiDAR-derived and contour-derived elevation grids were used, and the grids were processed using both single-directional flow algorithm and bi-directional flow algorithm. The result of these different grids were compared and analyzed in context of their application in defining terrain types for the forest gap model. Refinements were made in the timescale of gap model’s weather model, converting it into a daily weather generator, in order to incorporate the effects of the new topographic/hydrologic input parameter. The precipitation …
Date: August 2014
Creator: Goetz, Heinrich (Heinrich Erwin)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Immunity for New Mexico Public School Districts and the 1978 Tort Claims Act (open access)

Immunity for New Mexico Public School Districts and the 1978 Tort Claims Act

In a 3-year timeframe, nearly 800 student negligence suits were filed, and most involved some claim of personal injury. Despite heightened public attention of negligence lawsuits against school districts and their employees, an empirical study of court decisions revealed that the volume of litigation against school districts remained steady from 1990 to 2005, the majority of cases were ruled in favor of the school district employees, and government and official immunity were most often the basis for these rulings. Researchers have concluded that immunity laws are strong in the United States, although they vary by state in their application. However, a primary recommendation was that, because of the misconception of a lack of immunity for public school employees, a comprehensive study on governmental and official immunity is needed. This dissertation employed legal research, analysis, and methodology to engage in a comprehensive investigation of teacher immunity in the four southern states of Texas, Oklahoma, Mississippi, and New Mexico. Of central concern to this dissertation was the Tort Claims Act of 1978 from the State of New Mexico. The Tort Claims Act is the vehicle by which immunity is granted to public school employees. Court findings over the last 35 years point …
Date: August 2014
Creator: Herauf, Todd J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Oral History Interview with Afton Keeton, August 30, 2007 (open access)

Oral History Interview with Afton Keeton, August 30, 2007

The National Museum of the Pacific War presents an interview with Afton Keeton. Keeton joined the Navy in July of 1942. He completed Hospital Corps School and became a Pharmacist Mate. He first served aboard the USS Sea Dragon (SS-194). They patrolled the Aleutian Islands. He was then stationed at the Submarine Base in Pearl Harbor, working in a sick bay. He then served aboard the USS Apollo (AS-25) with a relief crew. He provides some detail of working aboard a submarine, serving as the Doc, living conditions and undergoing his own appendectomy aboard the Apollo. In early 1945 he was assigned for 1 year to serve at a submarine base in St. Thomas. He then served as hospital corpsman on the USS Clamagore (SS-343). Keeton also worked on sonar watch, radar watch and as a cook during his time in the Navy. He spent a total of 30 years in the Navy, retiring in February of 1972.
Date: August 30, 2007
Creator: Keeton, Afton
Object Type: Text
System: The Portal to Texas History
Oral History Interview with Afton Keeton, August 30, 2007 transcript

Oral History Interview with Afton Keeton, August 30, 2007

The National Museum of the Pacific War presents an interview with Afton Keeton. Keeton joined the Navy in July of 1942. He completed Hospital Corps School and became a Pharmacist Mate. He first served aboard the USS Sea Dragon (SS-194). They patrolled the Aleutian Islands. He was then stationed at the Submarine Base in Pearl Harbor, working in a sick bay. He then served aboard the USS Apollo (AS-25) with a relief crew. He provides some detail of working aboard a submarine, serving as the Doc, living conditions and undergoing his own appendectomy aboard the Apollo. In early 1945 he was assigned for 1 year to serve at a submarine base in St. Thomas. He then served as hospital corpsman on the USS Clamagore (SS-343). Keeton also worked on sonar watch, radar watch and as a cook during his time in the Navy. He spent a total of 30 years in the Navy, retiring in February of 1972.
Date: August 30, 2007
Creator: Keeton, Afton
Object Type: Sound
System: The Portal to Texas History
Underwater Optical Properties of Lake Texoma (Oklahoma-Texas) Using Secchi Disk, Submarine Photometer, and High-Resolution Spectroscopy (open access)

Underwater Optical Properties of Lake Texoma (Oklahoma-Texas) Using Secchi Disk, Submarine Photometer, and High-Resolution Spectroscopy

The underwater optical climate of Lake Texoma was measured at eleven fixed stations from August 1996 to August 1997. Secchi transparency and submarine photometry characterized seasonal and spatial values of secchi depth (SD), vertical attenuation coefficient (η''), and depth of euphotic zone (Zeu). Indices of Zeu:SD and η'' × SD were compared with universally applied values derived from inland and coastal waters. Turbidity explained 76% of the variation (p = 0.0001) of η'' among water quality parameters, including chlorophyll-α. Using a spectroradiometer, spectral signatures of chlorophyll-α and turbidity were located. Stations with low turbidity exhibited a distinct green reflectance peak around 590-610 nanometers, indicating presence of chlorophyll-α. Stations with high turbidity exhibited a reflectance peak shift towards the red spectrum, making it difficult to detect the chlorophyll signature. Derivative analysis of the reflectance signal at 590-610, and 720-780 nanometers allowed discrimination of this chlorophyll signature from those of turbidity (0.66 ≤ r^2 ≤ 0.99).
Date: August 1998
Creator: Rolbiecki, David A. (David Alan)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Admission Factors Related to Success in Doctoral Programs in Vocational-Technical Education in Texas and Oklahoma (open access)

Admission Factors Related to Success in Doctoral Programs in Vocational-Technical Education in Texas and Oklahoma

This study identified the admissions criteria for selected doctoral programs in vocational-technical education in Oklahoma and Texas and investigated the relationship of these criteria to success in the doctoral programs. Success in the doctoral programs was identified in terms of cumulative doctoral grade point average. Data were obtained through a questionnaire designed to ©licit both general information concerning admissions criteria for vocational-technical doctoral programs at the selected institutions and to collect specific information on a random sample of twenty doctoral candidates from each of the four selected institutions. Factors considered included birthdates, gender, scores on admissions tests, grade point average in the masters program, the year the latest masters was completed, number of colleges attended, and cumulative doctoral grade point average. A statistical analysis using nine separate one-way analyses of variance determined that four of the nine factors considered proved to be statistically significant at the .05 level or better when correlated with the criterion variable (cumulative doctoral grade point average). Those factors were gender, Graduate Record Examination verbal and composite scores, and masters grade point average. The results of the study basically parallel findings of research concerning admissions criteria and success in graduate programs in other areas. Additional research …
Date: August 1989
Creator: Roberts, Ross O'Neal
Object Type: Thesis or Dissertation
System: The UNT Digital Library
National Uranium Resource Evaluation: Sherman Quadrangle, Texas and Oklahoma (open access)

National Uranium Resource Evaluation: Sherman Quadrangle, Texas and Oklahoma

Results of reconnaissance surveys of the Sherman quadrangle to determine the likelihood of uranium deposits of the area, and additional information about the location and classification of any deposits.
Date: August 1982
Creator: Hobday, David K. & Rose, Floyd G.
Object Type: Report
System: The UNT Digital Library

National Uranium Resource Evaluation: Sherman Quadrangle, Texas and Oklahoma: Appendix A: Uranium Occurrences

Discussing uranium occurrences in the Sherman Quadrangle
Date: August 1982
Creator: Rose, Floyd G.
Object Type: Dataset
System: The UNT Digital Library

National Uranium Resource Evaluation: Sherman Quadrangle, Texas and Oklahoma: Appendix B: Locations and Analyses of Samples

Discussing locations and analyses of samples from the Sherman Quadrangle
Date: August 1982
Creator: Rose, Floyd G.
Object Type: Dataset
System: The UNT Digital Library

National Uranium Resource Evaluation: Sherman Quadrangle, Texas and Oklahoma: Appendix D: Anomalies on Gamma-Ray Logs From Petroleum Test Wells

Discussing anomalies on gamma-ray logs from petroleum test wells from the Sherman Quadrangle
Date: August 1982
Creator: Rose, Floyd G.
Object Type: Dataset
System: The UNT Digital Library
National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma (open access)

National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma

Results of reconnaissance surveys of the Wichita Falls quadrangle to determine the likelihood of uranium deposits of the area, and additional information about the location and classification of any deposits.
Date: August 1982
Creator: Edwards, Marc B. & Andersen, Richard L.
Object Type: Report
System: The UNT Digital Library

National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma: Appendix A: Uranium Occurrences

Discussing uranium occurrences in the Wichita Falls Quadrangle
Date: August 1982
Creator: Andersen, Richard L.
Object Type: Dataset
System: The UNT Digital Library

National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma: Appendix B: Locations and analyses of samples from the Wichita Falls Quadrangle

Discussing the Locations of samples from the Witchita Falls Quadrangle as well as the analyses of the samples
Date: August 1982
Creator: Andersen, Richard L.
Object Type: Dataset
System: The UNT Digital Library

National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma: Appendix D: Cross Section Electric-Log Locations

Discussing cross-section electric-log locations in the Wichita Falls Quadrangles
Date: August 1982
Creator: unknown
Object Type: Dataset
System: The UNT Digital Library

National Uranium Resource Evaluation: Wichita Falls Quadrangle, Texas and Oklahoma: Appendix E: Gamma-Ray Well Logs

Discussing gamma-ray well logs for the Wichita Falls Quadrangle
Date: August 1982
Creator: Andersen, Richard L.
Object Type: Dataset
System: The UNT Digital Library
A Psychological Investigation of the Expressed Attitudes of Single Undergraduate College Students Toward Marriage and Family Life (open access)

A Psychological Investigation of the Expressed Attitudes of Single Undergraduate College Students Toward Marriage and Family Life

This study examined the attitudes of undergraduate college students toward marriage and family life. The students in the study lived in college residence halls located in the states of Arkansas, Louisiana, Oklahoma, and Texas in the southwestern portion of the United States. A survey instrument consisting of fifty-eight attitude statements and six demographic items was used to gather information for the study. All of the fifty-eight attitude statements were listed in the following ten cluster areas for easier accessibility: cohabitation and premarital sexual relations, marriage and divorce, childhood and child rearing, division of household labor and professional employment, marital and extramarital sexual relations, privacy rights and social needs, religious needs, communication expectations, parental relationships, and professional counseling services. The six demographic items included age, gender, ethnic background, year in school, parental status, and dating experience .
Date: August 1981
Creator: Martin, Don (Donald Vincent)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Seasonal and Spatial Variability of the Microcrustacean Community in Lake Texoma, Texas and Oklahoma (open access)

Seasonal and Spatial Variability of the Microcrustacean Community in Lake Texoma, Texas and Oklahoma

Twenty-eight species of zooplankton were identified from Lake Texoma. Seasonal density of the overall microcrustacean community and seasonal cycles of individual species were compared with northern populations and any available literature from the Southwest. Cycles of occurrence and abundance were similar to those observed in northern populations but tended to occur earlier in the year due to higher temperatures. Spatial distributions within the reservoir were heavily influenced by nutrient and salt input from the Red River, which resulted in dense populations in the Red River Arm. In addition, during the summer, the microcrustacean community was restricted to the epilimnion due to anoxic conditions in the hypolimnion of the reservoir.
Date: August 1980
Creator: Crist, Lawrence W.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Size Fractionation of Metabolically Active Phytoplankton and Bacteria in Two Diverse Lentic Systems (open access)

Size Fractionation of Metabolically Active Phytoplankton and Bacteria in Two Diverse Lentic Systems

Simultaneous size fractionation of plankton populations associated with NaH^14CO_3 and ^3H-glucose uptake was employed in eutrophic Lake Texoma (Texas and Oklahoma) and oligotrophic Flathead Lake (Montana). Autoradiography was utilized to determine the role of specific microorganisms in community metabolism. Ultraplankton (0.45-10 μm) dominated plankton numbers and metabolic activity in both aquatic systems. Many of the most abundant species were not the most productive, in terms of inorganic C fixation. Rates of heterotrophic uptake of ^3H-glucose were small in comparison to photolithotrophic uptake in both lakes, Photoheterotrophy was more extensive in Flathead Lake, Autoradiographs indicated that bacteria were responsible for observed photoheterotrophy. Oscillatoria sp. exhibited. mixotrophy in Lake Texoma,
Date: August 1980
Creator: Ellis, Bonnie K.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Dalhart NTMS Quadrangle, New Mexico/Texas/Oklahoma, Including Concentrations of Forty-Two Additional Elements (open access)

Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Dalhart NTMS Quadrangle, New Mexico/Texas/Oklahoma, Including Concentrations of Forty-Two Additional Elements

Report documenting the results of chemical analysis for 1583 water and 503 sediment samples in the Dalhart quadrangle of northeastern New Mexico, northwestern Texas, and western Oklahoma. It includes an overview of the area, methods, data analysis, and evaluation.
Date: August 1980
Creator: Morgan, Terrance L.; George, William E.; Minor, Michael M.; Apel, Charles T.; Martell, Calvin J.; Garcia, Sammy R. et al.
Object Type: Report
System: The UNT Digital Library
An Investigation of the Importance of the Art of Hand Lettering in the Field of Advertising Art (open access)

An Investigation of the Importance of the Art of Hand Lettering in the Field of Advertising Art

This thesis concerns the utility of including the art of hand lettering in a curriculum of a university advertising art program. Data secured from 155 questionnaires sent to 266 advertising firms in five states were analyzed by simple descriptive statistics including frequency counts and percentages. Two hypotheses were examined, and it is concluded that hand lettering is still needed in advertising art and should be taught in university art programs.
Date: August 1977
Creator: Greer, Hiram V.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
[News Script: Tease] (open access)

[News Script: Tease]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about a young Oklahoma woman who dies in a collision between Fort Worth and Denton.
Date: August 16, 1974, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Wreck] (open access)

[News Script: Wreck]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about an Oklahoma woman who was killed and her two companions were injured in a traffic accident on interstate of Fort Worth.
Date: August 16, 1974, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Rotc] (open access)

[News Script: Rotc]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about more than a hundred high school ROTC students from a five state area who competed for honors at a drill workshop sponsored by the university of Texas in Arlington.
Date: August 10, 1974, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: New pipeline] (open access)

[News Script: New pipeline]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about seven oil companies which have announced their plans to build a 510 mile pipeline to carry crude oil from Texas to Oklahoma.
Date: August 6, 1974, 8:25 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library