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1,422
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1,004
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793
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15,273 Matching Results
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Evaluation of a Constructed Wetland to Reduce Toxicity from Diazinon at the Pecan Creek Wastewater Treatment Plant, Denton, TX
The City of Denton Pecan Creek Wastewater Treatment Facility has periodically failed effluent toxicity testing. A Toxicity Identification Evaluation has determined that Diazinon in the effluent is contributing to the observed toxicity. Chlorpyrifos is also implicated as a factor. The City of Denton constructed a half acre experimental wetland to remove Diazinon related toxicity. Results from spiking and microcosm experiments indicate that the wetland can reduce the Diazinon.
Date:
May 1996
Creator:
Baerenklau, Amy L. (Amy Lyn)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of Predicted and Actual Trophic Status of Lake Ray Roberts, Texas Based on Chlorophyll A
Two years before impoundment, the trophic status of Lake Ray Roberts was predicted by applying the total phosphorus input into the Organization for Economic Cooperation and Development (OECD) eutrophication model. Predicted mean summer epilimnetic (MSE) chlorophyll a of Elm Fork arm, Isle duBois arm and Main Body were in the eutrophic category of the OECD model. Observed MSE chlorophyll a two years after impoundment of Elm Fork arm, Isle duBois and Main Body had not reached their predicted means and were at the mesotrophic-eutrophic boundary of the OECD model. Six years after impoundment, observed MSE chlorophyll a for Main Body, was closer to its predicted mean and in the eutrophic category of the OECD model. Six years after impoundment, Elm Fork arm was the most productive area of Lake Ray Roberts. Observed means of chlorophyll a, total phosphates, suspended solids and turbidity were often highest in the Elm Fork arm. Wastewater effluent from Gainesville and Valley View, TX, had an impact on productivity in Elm Fork arm.
Date:
May 1999
Creator:
Lytle, Lili Lisa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bus Ride to Liberation: a Historical Video Documentary of the Acres Homes Transit Company in Houston, Texas
The Acres Homes Transit Company in Houston, Texas is Texas' first African American owned and operated bus company. Some say it is the first in the South. The company was developed during the height of the civil rights period. It serves as an establishment of economic empowerment during the oppressive civil rights era. The video is a historical visual documentation of the bus company from its beginning to its end. An accompanying written profile describes the research process, the pre-production, production and post-production stages, as well as future proposals for the documentary.
Date:
May 1994
Creator:
Childress, Doris (Doris Elaine)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Study of the Influence of Kenneth Cooper's Work on the Teaching of Wellness and Fitness in Physical Education Programs in 2-Year Community Colleges in the United States
Kenneth H. Cooper is considered to be a noted scholar in the field of wellness and fitness. This study explored his contributions to the preventive medicine and wellness movement in community college physical education programs in the United States. It examined Cooper's influence on the development of preventive medicine and wellness from its inception and growth to its impact on changes and factors affecting curriculum in community college programs. A random sample of436 physical education division directors from the nation's 1,400 community colleges yielded a 62% survey response. For purposes of comparison, the sample was stratified into two regions taken fromeast and west of the Mississippi River. Chi-square analysis at the .01 level of significance found no difference between variables due to geographic region. The findings of this study indicate that Kenneth Cooper's contributions to preventive medicine and wellness in community college physical education curriculum are overshadowed by state and local governing bodies that are the force behind curricular development in the nation's 2-year community colleges. However, as an individual contributor, Cooper ranks highly in influencing the wellness and physical education curriculum primarily in the areas of aerobic exercise, physical fitness, and cardiovascular disease. The extent of Cooper's impact on …
Date:
May 1997
Creator:
Coan, Barbara A. (Barbara Ann)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Perceptions of the Actual and Ideal Roles of Public School Superintendents in Texas
The problem of this study was to compare concepts of the actual and ideal roles of school superintendents as they are perceived by school superintendents and by school board presidents.
Date:
May 1968
Creator:
Sandler, Steven
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
AIDS Preventative Behavior Among Taiwanese University Students
This study used the Health Belief Model to examine the predictors of AIDS preventive behavior. The independent variables were the variables of individual perception, modifying factors (psychological variables), and likelihood variables. The respondents, the Taiwanese students of the University of North Texas, were influenced both by Chinese sexuality and Western values in their AIDS-risk behavior. The results revealed that 90% of the respondents were misinformed on the availability of AIDS vaccine. In addition, a majority of the students were either abstaining from sex or practicing monogamy. Using Pearson's correlation coefficient and multiple regression analysis, this study found that the psychological variables rather than cognitive variables significantly influenced the respondents' AIDS preventive behavior. Finally, suggestions were made for future research on AIDS, and for AIDS preventive behavior campaigns.
Date:
May 1997
Creator:
Wang, Ya-Chien
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Supplementary Materials upon Academic Achievement in and Attitude toward Mathematics among Eighth Grade Students
The problem of the study was to examine the effectiveness of using supplementary materials in the teaching of eighth grade mathematics. The study considered the effect that supplementary materials had on students in terms of the following variables--attitude toward mathematics, mathematical concepts, problem solving ability, understanding common fractions, computation of common fractions, decimal fractions and per cent, concepts of numbers and numerals (number system and operations), and concepts of numbers and numerals (decimal place value).
Date:
May 1971
Creator:
Wilkinson, Gerald Glendel
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Instructional Methods on Student Performance in Postsecondary Developmental Mathematics
This study examined success rates and end-of-semester grades for three instructional methods used in developmental algebra and college algebra. The methods investigated were traditional lecture, laboratory, and computer mediated learning. The population included the 10,095 students who had enrolled in developmental algebra and college algebra at Richland College in Dallas, Texas, for five semesters. Success was defined as earning a grade of A, B, C, or D in a course.
Date:
May 1999
Creator:
Hernandez, Celeste Peyton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Two Semester Life Science Syllabus for Use in Texas Public Schools with Seventh Grade Students
The problem of using a state adopted textbook written to apply to a large body of students with varying interests and needs was overcome by using a detailed syllabus that arranged course content in a meaningful sequence that appealed to student interest. The outlined syllabus prepared a two semester life science curriculum to be used by the teacher to guide lesson planning. Both semesters were divided into three units each. Materials included in the syllabus were given to actual student groups in real classroom settings. Since hands on learning was an important part of classroom instruction, two laboratory sections were included in the appendices to be used with the syllabus.
Date:
May 1995
Creator:
Edwards, Gail G. (Gail Graham)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Development and Application of an Assessment Protocol for Watershed Based Biomonitoring
With numerous bioassessment methodologies available, a regional protocol needs to be developed to ensure that results are comparable. A regional assessment protocol was developed that includes collecting five benthic macroinvertebrate samples, identifying organisms to genus, and calculating the following metrics: Number of Taxa, Total Number of Individuals, Simpson's Diversity Index, Shannon's Diversity Index, Percent Contribution of Dominant Taxa, Hilsenhoffs Biotic Index, and Percent Contribution of Dipterans. Once the protocol was developed, it was used to assess the Bayou Chico tributaries and watershed. All three tributaries had been significantly impacted by human activity as had the watershed as a whole. This study indicates that a regional protocol could be developed and is appropriate for biomonitoring at the watershed scale.
Date:
May 1998
Creator:
Schwartz, Joseph Howard
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessment and Analysis of Per Pupil Expenditures: a Study Testing a Micro-Financial Model in Equity and Student Outcome Determination
The purpose of this study was to examine district level financial data to assess equity across districts, to compare equity benchmarks established in the literature using selected functions from the state's financial database, and to determine the predictive value of those functions to the Texas Assessment of Academic Skills (TAAS) tests of 1997.
Date:
May 1999
Creator:
Holsomback, James Richard
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Anglo-American Council on Productivity: 1948-1952 British Productivity and the Marshall Plan
The United Kingdom's postwar economic recovery and the usefulness of Marshall Plan aid depended heavily on a rapid increase in exports by the country's manufacturing industries. American aid administrators, however, shocked to discover the British industry's inability to respond to the country's urgent need, insisted on aggressive action to improve productivity. In partial response, a joint venture, called the Anglo-American Council on Productivity (AACP), arranged for sixty-six teams involving nearly one thousand people to visit U.S. factories and bring back productivity improvement ideas. Analyses of team recommendations, and a brief review of the country's industrial history, offer compelling insights into the problems of relative industrial decline. This dissertation attempts to assess the reasons for British industry's inability to respond to the country's economic emergency or to maintain its competitive position faced with the challenge of newer industrializing countries.
Date:
May 1999
Creator:
Gottwald, Carl H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Beyond the Merchants of Death: the Senate Munitions Inquiry of the 1930s and its Role in Twentieth-Century American History
The Senate Munitions Committee of 1934-1936, chaired by Gerald Nye of North Dakota, provided the first critical examination of America's modern military establishment. The committee approached its task guided by the optimism of the progressive Social Gospel and the idealism of earlier times, but in the middle of the munitions inquiry the nation turned to new values represented in Reinhold Niebuhr's realism and Franklin D. Roosevelt's Second New Deal. By 1936, the committee found its views out of place in a nation pursuing a new course and in a world threatening to break out in war. Realist historians writing in the cold war period (1945-1990) closely linked the munitions inquiry to isolationism and created a one-dimensional history in which the committee chased evil "merchants of death." The only book-length study of the munitions investigation, John Wiltz's In Search of Peace, published in 1963, provided a realist interpretation. The munitions inquiry went beyond the merchants of death in its analysis of the post-World War I American military establishment. A better understanding emerges when the investigation is considered not only within an isolationist framework, but also as part of the intellectual, cultural, and political history of the interwar years. In particular, Franklin …
Date:
May 1996
Creator:
Coulter, Matthew Ware
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of a Computer-Administered Test and a Paper and Pencil Test Using Normally Achieving and Mathematically Disabled Young Children
This study investigated whether a computer-administered mathematics test can provide equivalent results for normal and mathematically disabled students while retaining similar psychometric characteristics of an equivalent paper and pencil version of the test. The overall purpose of the study was twofold. First, the viability of using computer administered assessment with elementary school children was examined. Second, by investigating items on the computer administered mathematics test for potential bias between normally achieving and mathematically disabled populations, it was possible to determine whether certain mathematical concepts consistently distinguish between the two ability groups.
Date:
May 1997
Creator:
Swain, Colleen R. (Colleen Ruth)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Strategic Planning for Texas Community Colleges
Over the past three to four decades the community college has experienced some tremendous periods of growth and success. Much of this has been due to a growing economy and a growing population. However, the future of the community college may be in for some changes. The effects these changes are having can mean opportunity or disaster depending on the readiness of the institution. The change occurring today requires future insight, swifter action, and a proactive response. Community colleges cannot afford to leave planning for crisis situations. A proactive stance must be taken and tough questions must be asked. In 1991 the Seventy-second Texas Legislature tasked the Legislative Budget Board of Texas with the assignment of developing a long-range strategic plan for state government based on individual agency plans. The passing of House Bill No. 2009 required that all agencies of Texas State Government, including community colleges, develop a strategic plan. The purpose of this study was to determine the significance of certain independent variables towards the perceived importance of three dependent variables - statements of purpose, statements of direction and statements of impact - found in the Legislative Budget Board Strategic Planning Template. Research shows that there are a …
Date:
May 1997
Creator:
Minatra, Rodger W. (Rodger Walton)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparative Study and Model of the Certification Requirements for Vocational Office Education Teacher-Coordinators in the United States
The purposes of the study were (1) to describe the historical rationale for teacher certification, (2) to survey and report the present requirement of the states for certification as a vocational office education teacher-coordinator, (3) to survey leading business and office education educators for recommendations for vocational office education teacher-coordinator certification requirements, (4) to examine, survey, and report the characteristics and qualifications of employed vocational office education teacher-coordinators, and (5) to develop a model of criteria representing ideal standards for initial and continuing certification requirements for vocational office education teacher-coordinators.
Date:
May 1973
Creator:
Bounds, Joan Karen Johnston, 1936-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Role and Functions of Diversity Affairs Centers' Chief Personnel Officers at Public Universities in Texas
The problem of this study concerns the role and functions of diversity affairs centers' chief personnel officers at public universities in Texas. Because of the political and evolving nature of diversity affairs offices, it is important to understand the functions and types of services these centers provide with respect to institutional goals, missions, and student retention at public universities in Texas.
Date:
May 1998
Creator:
David, John Seh
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of the Desirability and Feasibility of Accountability Measures as Perceived by Public School Administrators and Teachers
This study had three main purposes. The first was to determine the perceptions of public school administrators toward desirability and toward feasibility of accountability items. The second was to determine the perceptions of public school teachers toward desirability and toward feasibility of accountability items. The third was to compare the perceptions of administrators with those of teachers and to indicate areas where they seemed to be in agreement or disagreement.
Date:
May 1973
Creator:
Kiamie, Robert A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A System of Selection and Human Resource Development for Small Retailers of Apparel and Accessories
The study has a twofold purpose. The first is to determine the extent to which organized selection and training practices exist in small apparel and accessory retailing establishments, and the general attitude which small retailers of apparel and accessories express toward the value of selection and training functions. The second is to construct a practical system which can be used in small apparel and accessory retailing establishments.
Date:
May 1973
Creator:
Burr, Patricia LeMay
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Parental Divorce and Family Conflict on Young Adults Females' Perceptions of Social Support and Adjustment
The purpose of this study was to explore the effects of parental divorce and family conflict during adolescence on young adult females' social support and psychological adjustment. The three areas explored were perceptions of relationship satisfaction and closeness, sources and amount of social support and adjustment. One hundred and forty-one female undergraduates, 53% from families in which their parents are still married and 47% from families in which a parental divorce occurred during adolescence, completed the following measures: the Dyadic Adjustment Scale (Spanier, 1976), the Social Provisions Scale-Source Specific (Cutrona, 1989), the Inventory of Common Problems (Hoffman & Weiss, 1986), the Family Environment Scale (Moos & Moos, 1981), and the Sibling Relationship Questionnaire (Furman & Buhrmester, 1985).
Date:
May 1998
Creator:
Quinn, M. Theresa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Standing in the Gap: Subposts, Minor Posts, and Picket Stations and the Pacification of the Texas Frontier, 1866-1886
This dissertation describes the various military outposts on the Texas frontier between 1866 and 1886. It is arranged geographically, with each chapter covering a major fort or geographical area and the smaller posts associated with it. Official military records and government reports serve as the primary sources of data. In 1866 when the United States Army returned to the defense of Texas after four years of civil war, the state's frontier lay open to depredations from several Indian tribes and from lawless elements in Mexico. The army responded to those attacks by establishing several lines of major forts to protect the various danger areas of the frontier. To extend its control and protection to remote, vulnerable, or strategically important points within its jurisdiction, each major fort established outposts. Two main categories of outposts existed in Texas, subposts and picket stations. Subposts served as permanent scouting camps or guarded strategic points or lines of communication. Picket stations protected outlying locations, such as stage stations, that were particularly vulnerable to attack. Because Indians raiding in Texas usually operated in fairly small groups, garrisons at outposts were similarly small. Company-sized detachments generally garrisoned subposts, and picket stations seldom held more than a dozen …
Date:
May 1995
Creator:
Uglow, Loyd M. (Loyd Michael)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Case Study of Interpersonal Influences in a Band Music Setting: Bohumil Makovsky (1878-1950) and His Association with Selected Individuals Involved in Instrumental Music in the State of Oklahoma
The purpose of this study was to investigate the interpersonal influences which Bohumil Makovsky, Director of Bands and Chairman of the Music Department at Oklahoma A&M College from 1915 to 1943, had on his students and peers, as confirmed through the perceptions of selected individuals, and to determine what personal characteristics and means he drew upon to induce changes in his students and peers.
Date:
May 1992
Creator:
Dugger, Richard Charles
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Descriptive Study of Student Assistance Programs in the State of Texas
The purpose of this study is to examine the four basic student assistance models and determine their distribution in Texas, describe the student assistance programs in place in public school districts in Texas including the program's goals, objectives and components, and explore the perceived effectiveness of student assistance programs as a viable means of drug and alcohol education for students enrolled in public school districts in Texas in kindergarten through twelfth grade.
Date:
May 1995
Creator:
Wright, Marilyn D. (Marilyn Diane)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Library CD-ROM LAN Performance and Patron Use: a Computer Simulation Model
In this study, a computer simulation model for library CD-ROM LAN systems was created. Using this model, the system optimization problems were examined. The simulation model imitated the process of the actual decision variables changing their values and generated the corresponding results. Under a certain system environment, if the values of decision variables are changing, the system performances are getting changed also. This study investigated these relationships with the created model. The system users' interarrival time, service time, and other relevant data were collected on randomly selected days in a university library. For data collection, both of the observation and the system automatic metering software were used. According to the collected data, a discrete events simulation model was created with GPSS/H. The simulation model was proven valid and accurate by a pilot test and by the calculation with queuing theory. Statistical tests were used for data comparison and analysis. In addition, animation technique was used to show the simulation process by using Proof Animation. By this technique, the simulation process was monitored on the screen.
Date:
May 1996
Creator:
Xia, Hong
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library