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163,137
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22,775
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15,993
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169,553 Matching Results
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Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces
The south-central United States serves as an important biogeographical link and dispersal corridor between Nearctic and Neotropical elements of western hemisphere odonate faunas. Its species are reasonably well known because of substantial collections, but there has been no concerted effort to document the extent of biodiversity and possible geographic affinities of dragonflies and damselflies of this region. The recent discoveries of Argia leonorae Garrison, Gomphus gonzalezi Dunkle and Erpetogomphus heterodon Garrison from southern and western Texas and northern Mexico suggest that Odonata species remain to be discovered in this area, particularly from far south Texas and northern Mexico. I have documented a total of 12,515 records of Odonata found in 408 counties within the south-central U.S. A total of 73 species of damselflies and 160 species of dragonflies was revealed in the region. The 233 (197 in Texas) Odonata species are distributed among 10 families and 66 genera. Illustrated family, generic, and species-level keys are provided. Since the beginning of this work in the Fall of 1993, one species has been added each to the Louisiana and Oklahoma faunas, and 12 species have been added, previously unreported from Texas, including four new to the U.S. The area of highest Odonata …
Date:
May 1999
Creator:
Abbott, John C.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Field Validation of Zero Energy Lab Water-to-Water Ground Coupled Heat Pump Model
Heat pumps are a vital part of each building for their role in keeping the space conditioned for the occupant. This study focuses on developing a model for the ground-source heat pump at the Zero Energy lab at the University of North Texas, and finding the minimum data required for generating the model. The literature includes many models with different approaches to determine the performance of the heat pump. Each method has its pros and cons. In this research the equation-fit method was used to generate a model based on the data collected from the field. Two experiments were conducted for the cooling mode: the first one at the beginning of the season and the second one at the peak of the season to cover all the operation conditions. The same procedure was followed for the heating mode. The models generated based on the collected data were validated against the experiment data. The error of the models was within ±10%. The study showed that the error could be reduced by 20% to 42% when using the field data to generate the model instead of the manufacturer’s catalog data. Also it was found that the minimum period to generate the cooling …
Date:
May 2016
Creator:
Abdulameer, Saif
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Art Program Utilizing Discarded Materials in the Improvement of Interiors of Homes of Children in a Low Income Group
The problem with which this investigation is concerned is that of planning and carrying out an art program in which a particular group of students in a low income group, by utilizing discarded and inexpensive materials, can create useful and satisfying objects for the improvement of their home interiors.
Date:
January 1960
Creator:
Abram, W. B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Perceived Effect of the Quarter System on the Programs of Selected Middle Schools in the State of Texas
The problem of this study was to analyze the effect that a legislature-mandated quarter system was having on certain selected middle schools in the State of Texas, Some educators have claimed that the quarter system makes it possible to add flexibility to school programs. This study, therefore, was an attempt to find out if local school districts were taking advantage of this opportunity. A second goal of the study was to determine how principals, teachers, and curriculum directors felt about the manner in which schools were implementing certain teaching strategies which experts in this field have recommended for use in middle schools. It was concluded that the schools were not taking advantage of the quarter system in order to more nearly approach the middle school concept. Educators do not seem to be against the innovations proposed by middle school authorities so it would seem that the time is right for a full commitment to the area of schooling for the middle years. The support of the general public then will be a key factor in the success of the middle school. Educators must make an effort to keep the public better informed about the way children learn and grow if …
Date:
August 1977
Creator:
Acuff, George D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Value of Filmstrips in the Third Grade
The purpose of this study is to determine the possible influence of the use of filmstrip material upon a group of third-grade pupils as compared with another group of third-grade pupils not using filmstrip materials.
Date:
1950
Creator:
Adair, Elva Gaynelle
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Study of the Bacterial Flora of Food Utensils in Hardin College Cafeteria and Twenty-Five Eating Establishments in Wichita Falls, Texas
The problem of this thesis consists primarily of a bacteriological survey of the eating utensils of Hardin College Cafeteria and twenty-five other eating establishments in the city of Wichita Falls, Texas. This investigation was made primarily with reference to a determination of the possible presence of typhoid and related organisms, and secondarily to an investigation of the actual presence of those bacterial organisms associated with the more common outbreaks of food poisoning.
Date:
1949
Creator:
Adams, Isaac Newton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Forney Headlight: (Forney, Tex.), Vol. 1, No. 1, Ed. 1 Thursday, March 19, 1903
Weekly newspaper from Forney, Texas that includes local, state, and national news along with advertising.
Date:
March 19, 1903
Creator:
Adams, J. D.
Object Type:
Newspaper
System:
The Portal to Texas History
Economic Development in Texas During Reconstruction, 1865-1875
The study challenges many traditional stereotypes of Texas during Reconstruction. Contrary to what Democrats charged, the Davis government did not levy exorbitant taxes. Radical taxes seemed high in comparison to antebellum taxes, because antebellum governments had financed operations with indemnity bonds, but they were not high in comparison to taxes in other states. Radical taxes constituted only 1.77 percent of the assessed value of property in Texas, which was lower than the average for the United States and about the same for other states undergoing Reconstruction. In Texas most of the tax increases during Reconstruction were made necessary by the Civil War and the increase in population. The tax increases paid for state and local governments, frontier and local protection, public buildings, internal improvements, and public schools. Edmund J. Davis, Radical governor, contributed significantly to Texas government when he attempted to focus attention on reforming the tax system,limiting state expenses to state income, limiting state aid for railroad companies, and protecting the public from railroad company abuses.
Date:
August 1980
Creator:
Adams, Larry Earl
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Post-Traumatic Symptomatology in the Luby's Shooting
The role of exposure to a human-made disaster and the subsequent development of post-traumatic stress reactions were examined. Subjects included 49 males and 30 females who were variously exposed to the Luby's shooting incident in Killeen, Texas in October of 1991. Post-traumatic stress symptomatology was measured by the SCL-90R. Exposure was operationalized by using a scenario-rating scheme with independent raters estimating each subject's level of exposure. A regression and commonality analysis revealed that exposure is an important predictor in post-traumatic symptomatology. Premorbid functioning and gender were also found to play important roles, with females expressing higher levels of symptomatology.
Date:
December 1993
Creator:
Adams, Pam, 1964-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Ethnographic Study of Outstanding, Veteran Elementary Teachers
The purpose of this study was to describe outstanding, veteran elementary teachers using an ethnographic approach. This qualitative study was conducted in a suburban independent school district in northeast Texas serving approximately 17,000 students. The data collected focused on five outstanding, veteran elementary teachers who had at least twenty years of uninterrupted teaching service. Data were collected through interviews, classroom observations, and the administration of the Mind Styles (Gregorc,1982) inventory. The findings of this research were as follows. This study found that many factors were responsible for retaining outstanding, veteran elementary teachers in the work force. These included adequate preparation, a strong personal commitment, a successful initial teaching assignment, a development of skills and abilities inside and outside the teaching field, and professional accomplishments throughout the teaching career.
Date:
August 1992
Creator:
Adams, Sandra K. (Sandra Kay)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Identification of College Freshmen According to Scholastic and Persistence Potential
This study was designed to develop a procedure for the identification of freshman students at risk in the academic and social integration process at Texas Christian University. The data for the study were collected from the Student Information Form (SIF) and student records system at Texas Christian University. The data included demographic, attitudinal, educational background and one-year persistence indicators (retain and drop) as well as one-year cumulative grade point averages for the fall 1990 entering freshman class.
Date:
December 1992
Creator:
Adams, William F. (William Franklin)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Proposed Industrial Arts General Shop Curriculum for Pauline G. Hughes Middle School, Burleson Independent School District
This study was made to gather data and information to aid the Burleson Independent School District in initiating an industrial arts general shop program in the Pauline G. Hughes Middle School. The data and information were obtained from the Texas Education Agency, the Burleson Independent School District records, the vocational director, the assistant superintendent, a questionnaire, and the Brodhead-Garrett 1976-1977 Catalog. The majority of the general shop programs in the north Texas area conduct classes five days a week for fifty-five minutes a day and accommodate twenty-four students per class. Furthermore, the majority of the general shop programs offer three units of instruction per year and teach one unit of instruction each quarter.
Date:
May 1978
Creator:
Adams, William Leroy.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 1, Ed. 1 Friday, September 9, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
September 9, 1966
Creator:
Addington, Dianne & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 2, Ed. 1 Friday, September 16, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
September 16, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 3, Ed. 1 Friday, September 23, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
September 23, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 4, Ed. 1 Friday, September 30, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 5, Ed. 1 Friday, October 7, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
October 7, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 6, Ed. 1 Friday, October 14, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
October 14, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 7, Ed. 1 Friday, October 21, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
October 21, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 8, Ed. 1 Friday, October 28, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
October 28, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 9, Ed. 1 Friday, November 4, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
November 4, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 10, Ed. 1 Friday, November 11, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
November 11, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 11, Ed. 1 Friday, November 18, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
November 18, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 12, Ed. 1 Friday, November 25, 1966
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
November 25, 1966
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History