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

Description: 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 p… more
Date: August 1998
Creator: Rolbiecki, David A. (David Alan)
Partner: UNT Libraries
open access

Spatial and Temporal Patterns of Areal and Volumetric Phytoplankton Productivity of Lake Texoma

Description: Phytoplankton productivity of Lake Texoma was measured for one year from August 1999 to August 2000 for four stations, using the oxygen change method and laboratory incubation. Mean values of the photosynthetic parameters, PBmax and alphaB ranged from 4.86 to 46.39 mg O2.mg Chl-1.hr-1 for PBmax and 20.06 to 98.96 mg O2.mg Chl-1.E-1.m2 for alphaB. These values were in the range to be expected for a highly turbid, temperate reservoir. Estimated gross annual areal productivity ranged from 594 g… more
Date: August 2001
Creator: Baugher, Tessy
Partner: UNT Libraries
open access

The Life History and Ecology of Camelobaetidius Mexicanus (Ephemeroptera: Baetidae) from Honey Creek, Oklahoma

Description: The primary objective of this study is to describe the life history of Camelobaetidius mexicanus living in Honey Creek in south central Oklahoma. Specific objectives were to determine emergence phenology and behavior, describe nupital flight and female oviposition, measure subimaginal and imaginal life spans, examine egg morphology and time to hatching, describe larval microdistribution, analyze gut contents and to determine voltinism from nymphal head capsule widths and adult emergence.
Date: August 1995
Creator: Wagner, Paul F.
Partner: UNT Libraries
open access

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

Description: 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.
Partner: UNT Libraries
open access

A History of WKY-AM

Description: The problem of this study was to document the history of radio station WKY, Oklahoma City, and to locate its place within the development of American radio broadcasting. This thesis divides WKY's history into two periods: 1920 through 1925, the years it was operated by Earl Hull, and 1926 through 1989, after it was acquired by E. K. Gaylord. The purpose of this study was to record the history of the oldest radio station operating west of the Mississippi River, its effect on the broadcast indust… more
Date: May 1991
Creator: Meeks, Herman Ellis
Partner: UNT Libraries
open access

Life History of Mayatrichia ponta Ross (Trichoptera: Hydroptilidae) in Honey Creek, Turner Falls Park, Oklahoma

Description: The life history and ontogenetic microhabitat change of Mayatrichia ponta Ross were investigated in Honey Creek, Turner Falls Park, Murray Co., Oklahoma, U.S.A. from August 1994 to August 1995. The shape of larval cases changed from a small cone to a cylinder. M. ponta had an asynchronous multivoltine life history with considerable cohort and generation overlap; five generations were estimated. The development rate was reduced in winter. The winter generations of M. ponta had wider head capsule… more
Date: December 1997
Creator: Wang, Yi-Kuang
Partner: UNT Libraries
open access

Environmental Factors Influencing Chlorophyll-a Concentrations in Lake Texoma

Description: An analysis of algal biomass measured by chlorophyll-a concentration in Lake Texoma was performed as a part of a monitoring program to develop baseline environmental data in order to detect the potential effects of engineered changes in chloride concentrations in the reservoir. This portion of the research project focused on two main research objectives. The first objective was evaluating the effect of sampling strategy on the ability to adequately reflect standing crop estimates and trends in … more
Date: December 1998
Creator: Gibbs, Jennifer S. (Jennifer Sokolovic)
Partner: UNT Libraries
open access

An Analysis of the Contribution of a Given Educational System to the Defense of Democracy

Description: The purpose of this study is four-fold: (1) to present through an analysis of life needs the nature and source of a curriculum best adapted to democracy; (2) to present fairly some of the reasons why a curriculum must be founded on democracy if democracy survives the dangerous forces that threaten to obliterate its very existence; (3) to make an unprejudiced analysis of the regular situation now existing in Oklahoma schools at the present time to find whether her schools are meeting this challe… more
Date: 1941
Creator: Maxwell, Maude Napier
Partner: UNT Libraries
open access

A Comparative Study of the Qualifications and Duties of City School Superintendents' Secretaries in Oklahoma

Description: The problem in this study is to make a comparison of the qualifications and duties of secretaries of city school superintendents in Oklahoma, with regard to academic training stenographic duties, duties pertaining to financial records and reports, banking duties, duties pertaining to general records and reports, duties pertaining to bus and transportation reports, teaching duties and miscellaneous duties.
Date: 1943
Creator: Glenn, Della Ola
Partner: UNT Libraries
open access

Food Habits, Dietary Overlap and Electivity of Non-Game Insectivorous Fishes in an Ozark Foothills Stream

Description: Etheostoma spectabile, E. punctulatum, and Cottus carolinae were sampled Mar., 1983, - Feb., 1984, in Flint Creek, Oklahoma. Immature E. spectabile ate primarily microcrustaceans, while mature fishes relied more on mayflies and amphipods. Juvenile E. punctulatum fed upon mayflies, amphipods, and Asellus. Mature E. punctulatum ate primarily mayflies, and other relatively larger prey. Cottus carolinae consumed chironomids almost exclusively in Jan. - Feb., 1984, while mayflies were predominant th… more
Date: May 1985
Creator: Todd, C. Stan (Charles Stan)
Partner: UNT Libraries
open access

Emergence, Growth, Drift and Microdistribution of Stoneflies (Plecoptera) in an Ozark Foothills Stream, Delaware County

Description: Adult stonefly emergence, nymphal growth, drift and microdistribution were examined in Battle Branch, a secondorder, spring-fed stream, from November, 1982 to May, 1984. Adults of 22 species emerged successionally, with specific adults present every month. Searching emergent objects and the stream margin was best for collection of winter and early spring emerging species. Sweeping the streamside and light trapping were most efficient for late spring and summer emerging species. Nymphal growth f… more
Date: May 1985
Creator: Ernst, Mark R. (Mark Richard)
Partner: UNT Libraries
open access

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

Description: 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… more
Date: August 1980
Creator: Ellis, Bonnie K.
Partner: UNT Libraries
open access

Drumming Behavior of Selected North American Stoneflies (Plecoptera)

Description: Drumming is first described for five North American stonefly species, Acroneuria evoluta, Doroneuria baumanni, Isoperla namata, Chernokrilus misnomus, and Pictetiella expansa. Signals of Acroneuria lycorias, Phasganophora capitata and Isoperla signata are further described. Drumming was not recorded from Amhinemura delosa. Signals of A. evoluta are the most complex yet recorded in Plecoptera. Doroneuria baumanni, P. expanse, C. misnomus and P. capitata have 2-way exchanges. Male D. baumanni pro… more
Date: December 1983
Creator: Maketon, Monchan
Partner: UNT Libraries
open access

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

Description: 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… more
Date: August 1980
Creator: Crist, Lawrence W.
Partner: UNT Libraries
open access

The Improvement of Reports to Parents

Description: The purpose of this study is to determine an adequate and justifiable report to the parents regarding the progress of students in the public schools of the Colbert community, Colbert, Oklahoma.
Date: 1951
Creator: Mantooth, Elmer Herle
Partner: UNT Libraries
open access

Untrammeled by Man? An Ethnographic Approach of Outdoor Recreation Management in Charon's Garden Wilderness

Description: Charon's Garden Wilderness Area within the Wichita Mountains National Wildlife Refuge in Oklahoma is a landscape that is granted federal protection through the Wilderness Act of 1964. The discourse of wilderness management is influenced by governmental policies and practice which organize knowledge surrounding the natural landscape, like with the formation and semantics of the Wilderness Act. The Wilderness Act establishes characteristics that are designed to monitor and control the landscape a… more
Date: December 2018
Creator: Lukins, Gabrielle M
Partner: UNT Libraries
open access

A Study of Industrial Arts Programs of the Teacher Training Institutions of Oklahoma to Determine if the Teachers of Industrial Arts in the High Schools of Oklahoma are Receiving Adequate Training

Description: The purpose of this study is to determine to what extent the high school teachers of industrial arts in the State of Oklahoma are being used and trained to meet the apparent needs and trends in the field of industrial arts; and to make the results available in a helpful way to all persons interested in working in the field, or in preparing for, or preparing others for service in the field.
Date: 1950
Creator: Enderby, David R.
Partner: UNT Libraries
open access

Ideal Learning Spaces: the Student Perspective

Description: Classrooms, libraries, student unions, and university campuses shape students’ learning experiences. These physical learning spaces set the stage for college student engagement and academic performance. Most of the research about the role of physical spaces in learning lacks the student perspective. The goal of this study was to offer a student-centered vision of ideal learning spaces. Students are the learners for whom learning spaces are designed, and this thesis examines the way students of … more
Date: May 2015
Creator: Sidler, Elizabeth D.
Partner: UNT Libraries
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