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 Collection: UNT Theses and Dissertations
Evaluation of the Developmental Effects and Bioaccumulation Potential of Triclosan and Triclocarban Using the South African Clawed Frog, Xenopus Laevis
Triclosan (TCS) and triclocarban (TCC) are antimicrobials found in U.S. surface waters. This dissertation assessed the effects of TCS and TCC on early development and investigated their potential to bioaccumulate using Xenopus laevis as a model. The effects of TCS on metamorphosis were also investigated. For 0-week tadpoles, LC50 values for TCS and TCC were 0.87 mg/L and 4.22 mg/L, respectively, and both compounds caused a significant stunting of growth. For 4-week tadpoles, the LC50 values for TCS and TCC were 0.22 mg/L and 0.066 mg/L; and for 8-week tadpoles, the LC50 values were 0.46 mg/L and 0.13 mg/L. Both compounds accumulated in Xenopus. For TCS, wet weight bioaccumulation factors (BAFs) for 0-, 4- and 8-week old tadpoles were 23.6x, 1350x and 143x, respectively. Lipid weight BAFs were 83.5x, 19792x and 8548x. For TCC, wet weight BAFs for 0-, 4- and 8-week old tadpoles were 23.4x, 1156x and 1310x. Lipid weight BAFs were 101x, 8639x and 20942x. For the time-to-metamorphosis study, TCS showed an increase in weight and snout-vent length in all treatments. Exposed tadpoles metamorphosed approximately 10 days sooner than control tadpoles. For the hind limb study, although there was no difference in weight, snout-vent length, or hind limb length, the highest treatment was more developed compared to the control. There were no differences in tail resorption rates between the treatments and controls. At relevant concentrations, neither TCS nor TCC were lethal to Xenopus prior to metamorphosis. Exposure to relatively high doses of both compounds resulted in stunted growth, which would most likely not be evident at lower concentrations. TCS and TCC accumulated in Xenopus, indicating that the compound has the potential to bioaccumulate through trophic levels. Although TCS may increase the rate of metamorphosis in terms of developmental stage, it did not disrupt thyroid function and metamorphosis in regards to limb development and tail resorption.
Evaluation of the Easter Seals North Texas Autism Treatment Program: Progress in Meeting Program Mission
Applied behavior analysis (ABA) remains at the forefront of effective interventions for children with autism. In some cases, the high cost of treatment and other environmental factors limit families from accessing services. The Easter Seals North Texas (ESNT) Autism Treatment Program (ATP) was created to reach high risk, underserved families in the North Texas area by providing early intensive behavioral intervention (EIBI) services to children with autism. This evaluation was conducted to analyze the success of meeting the ESNT ATP program mission to provide culturally responsive ABA to children. The evaluation includes the design of assessments, the analysis of the assessment data, and a set of recommendations to maintain and increase program accessibility.
Evaluation of the Economic, Social, and Biological Feasibility of Bioconverting Food Wastes with the Black Soldier Fly (Hermetia illucens)
Food waste in the waste stream is becoming an important aspect of integrated waste management systems. Current efforts are composting and animal feeding. However, these food waste disposal practices rely on slow thermodynamic processes of composting or finding farmers with domestic animals capable of consuming the food wastes. Bioconversion, a potential alternative, is a waste management practice that converts food waste to insect larval biomass and organic residue. This project uses a native and common non-pest insect in Texas, the black soldier fly, which processes large quantities of food wastes, as well as animal wastes and sewage in its larval stage. The goal of this research is to facilitate the identification and development of the practical parameters of bioconversion methods at a large cafeteria. Three major factors were selected to evaluate the practicality of a bioconversion system: (1) the biological constraints on the species; (2) the economic costs and benefits for the local community; (3) the perception of and interaction between the public and management agencies with respect to the bioconversion process. Results indicate that bioconversion is feasible on all levels. Larvae tolerate and consume food waste as well as used cooking grease, reducing the overall waste volume by 30-70% in a series of experiments, with an average reduction of 50%. The economical benefits are reduced collection costs and profit from the sale of pupae as a feedstuff, which could amount to as much as $1,200 per month under optimal conditions. Social acceptance is possible, but requires education of the public, specifically targeting school children. Potential impediments to social acceptance include historical attitudes and ignorance, which could be overcome through effective educational efforts.
An Evaluation of the Educational Objectives of Grandview, Alvarado, and Surrounding Rural Schools
The problem constituting the basis of this study is one having to do with an investigation of educational objectives. Specifically, it relates to an examination of teachers' objectives in a strictly limited area of Texas and a comparison of these objectives with those advanced by professional educators and published in literature dealing with educational practices and principles.
An Evaluation of the Educational Qualifications and Functions of the Business Managers in the School Systems of Texas with a Scholastic Population of One Thousand or More
The purpose of this study is to examine the educational qualifications and functions of the business managers in the school systems of Texas with a scholastic population of one thousand or more. This study attempts to determine from the findings what the business managers' duties should be and the needed qualifications, educational and otherwise, for performing these duties.
An Evaluation of the Effect of a Specific Perceptual Training Program on Classroom Skills in Kindergarten
No Description
An Evaluation of the Effect of Learning Styles and Computer Competency on Students' Satisfaction on Web-Based Distance Learning Environments
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This study investigates the correlation between students' learning styles, computer competency and student satisfaction in Web-based distance learning. Three hundred and one graduate students participated in the current study during the Summer and Fall semesters of 2002 at the University of North Texas. Participants took the courses 100% online and came to the campus only once for software training. Computer competency and student satisfaction were measured using the Computer Skill and Use Assessment and the Student Satisfaction Survey questionnaires. Kolb's Learning Style Inventory measured students' learning styles. The study concludes that there is a significant difference among the different learning styles with respect to student satisfaction level when the subjects differ with regard to computer competency. For accommodating amd diverging styles, a higher level of computer competency results in a higher level of student satisfaction. But for converging and assimilating styles, a higher level of computer competency suggests a lower level of student satisfaction. A significant correlation was found between computer competency and student satisfaction level within Web-based courses for accommodating styles and no significant results were found in the other learning styles.
An Evaluation of the Effect of Mobility Upon Achievement and Progress in the East Van Zandt School, Fort Worth, Texas
The problem of this study is to determine the extent of the mobility of pupil population in the East Van Zandt School, Fort Worth, Texas, and the relationship of this mobility to pupil achievement and progress.
An Evaluation of the Effect of Participation in Certain Lunchroom Activities upon the Acceptance of Food by Elementary School Children
It is the purpose of this study to determine how the pupils' participation in certain lunchroom activities for a two-weeks period affected their acceptance of foods.
An Evaluation of the Effectiveness of the Texas State Teacher's Association in Meeting the Welfare Needs of Public School Teachers in the Areas of Tenure and Retirement
The primary purpose of this study is to review the actions of the Texas State Teacher's Association as an organization in support of the needs of Texas teachers for adequate tenure and retirement, and to evaluate their effectiveness in securing these needs.
An Evaluation of the Effectiveness of the Undergraduate Music Education Curriculum at North Texas State University
No Description
An Evaluation of the Effects of a Pay for Performance Plan on Productivity of Employees of a Professional Services Firm
This study examined the effects of a productivity-indexed pay for performance plan in a professional services firm. The new plan was implemented after productivity decreased under an existing plan. Performance of staff and senior level accountants was analyzed across three departments under a three-year baseline and a two-year intervention period. Several measures of productivity indicated that the intervention was effective in improving production, especially for employees with full annual workloads. Percentage of salaries earned in incentives was comparable for both the baseline and intervention periods. Possible explanations for trends in the data, weaknesses in the plan, and implications for future research are also discussed.
An Evaluation of the Effects of an Abridged Parent Training Program on Parent-child Interactions in the Home
This study examined the effects of a condensed parent training program on parent-child interactions in the home. Two parents participated in a positive parenting workshop that included explicit training of four skills and indirect training of two additional skills. To determine skill acquisition, both parents performed role plays and completed written exams pre- and post-training. Role play assessment results showed improvements in all skill areas for both participants. Written assessment results showed improvements for all skills directly taught except one. Multiple measures were examined in the home prior to and following the workshop to assess generalization. Results showed an increase in positive interactions and decrease in coercive interactions and undesirable child behavior for both participants.
An Evaluation of the Effects of Two Different Role Play Formats on the Outcomes of a Parent Training Curriculum
The current study was designed to replicate and extend previous research on the effectiveness of behavioral parent training. Specifically, the effectiveness of the Behavior Management and Parenting Services (BMAPS) curriculum in teaching parents to exhibit a set of parenting skills and respond accurately to a multiple choice examination about positive parenting techniques was evaluated. In addition, the curriculum was revised so that the relative effectiveness and acceptability of two role play formats could be assessed. The outcomes of the study showed an improvement in the participants' ability to identify correct answers on a multiple choice examination and apply the parenting skills taught in class within a role play format; results pertaining to the efficacy of each role play format were less conclusive.
An Evaluation of the Elementary School Program of Carlsbad, New Mexico
The purpose of this study was to make an evaluation of the elementary school program of Carlsbad, New Mexico, so that as clear and accurate a picture as possible might be obtained of present practices, to compare these practices with acceptable educational information and philosophy of the present time, and to make recommendations for improving the school program. The results of the study should be beneficial to administrators and teachers alike in the improvement of the schools.
An Evaluation of the Equality of Educational Opportunity
This thesis examines the equality of physical education, health, and recreation for middle school boys in Amarillo, Texas. Data gathered at three schools in the city informed the author's conclusions.
An Evaluation of the Esthetic Judgment of Students in Austin College
For the average person many opportunities for esthetic enjoyment of useful objects exist if the relationship between beauty and utility is understood. Furniture and other articles of daily use have acquired new and radical changes of design, based on function, which are altering esthetic concepts. This new approach to design is gradually being accepted by manufacturers and producers. Do purchasers appreciate and accept these structural and functional bases of contemporary design? If they do not, wherein does their deficiency lie, and how may it be corrected? This is the problem that the writer has attempted to investigate through this study.
An Evaluation of the Firo-B Scale with Hospitalized Psychiatric Patients
Concerning the present study, if in the test result of psychotic patients there is some distortion of reality concepts, as is generally expected, then their scores on any personality scale should vary considerably from norms established on the same test by "normal" subjects.
Evaluation of the Formal Versus the Informal Method of Teaching Arithmetic
The problem in this investigation has a three-fold purpose: namely, (1) to determine the results of delaying formal arithmetic until the fourth grade; (2) to ascertain the results reflected in the reading abilities of children when the time ordinarily spent on drill and organized instruction in arithmetic is given to reading, the diverted time being spent in reading arithmetic stories, playing games, and in using other arithmetical processes in connection with school activities; (3) to compare the results of a behavior journal kept for each child in the experimental group and in the control group.
An Evaluation of the Gilmer-Aikin Law as to Its Soundness Financially and Administratively
The problem of this study is to determine the soundness of the Gilmer-Aikin Law financially and administratively. No attempt will be made to apply the principles of the law to any particular area or school district, but the law will be considered as a whole as it will apply to the schools of Texas in general.
An Evaluation of the Graham School System
The purpose of the study is to compare the Graham School System with other school systems in the same area; to evaluate the Graham School System with accepted standards, on the phases of school activities studied; and to make constructive recommendations and suggestions for needed improvements as shown by the data collected.
An Evaluation of the Health Program of Denton County for 1947-48
The purpose of this study is to evaluate the Health Education Program of Denton County for 1947-78, and in the light of the findings to make recommendations for 1948-49.
An Evaluation of the Hebron School, Hebron, Texas
This thesis presents the results of an examination of the Hebron, Texas public schools. Specific criteria, such as home life and socioeconomic background, were used to consider the abilities and needs of students. The resulting information made it possible to determine the ability of schools to impact the lives of students.
An Evaluation of the Henrietta High School, Henrietta, Texas
This study is an evaluation of the Henrietta High School of Henrietta, Texas. Its purpose is to measure this school by comparing it to the two hundred try-out schools which were used by the Cooperative Study of Secondary School Standards in setting up their criteria for determining the characteristics of a good secondary school.
An Evaluation of the Home Room Versus Departmental Method of Teaching Second Grade
The problem under consideration is to determine the difference between home-room and departmental methods of teaching second grades, as measured by educational achievement. The study attempts to answer the question, Which one of the foregoing mentioned methods will produce the greatest gain in achievement when applied at second-grade level?
An Evaluation of the House Un-American Activities Committee with Conclusions and Recommendations as to its Future Value
The purpose of this study is a critical examination of this Committee with emphasis on its methods, procedure, and worth.
An Evaluation of the Impact of Citizen Participation on the Goals for Dallas Program as Developed and Implemented by the City of Dallas, Texas
No Description
An Evaluation of the In-Service Education Program of Johnson County, Texas
This study proposes to show the progress made in the in-service education program of Johnson County and to determine the effectiveness of its newly adopted in-service program.
An Evaluation of the Influence of Certain Factors upon Popularity
The problem of this study was to determine what influence intelligence and school achievements, personality traits, physical achievements, physical attractiveness, general health, home background, and number of times absent have upon the popularity of students.
An Evaluation of the Language Arts Program in the Elementary Schools of Denison, Texas
The purpose of this study is to determine the weak points and the strong points of the Language Arts Program and to make recommendations for improvement.
An Evaluation of the Leadership Education Program of the Methodist Church in the Central Texas Conference
The problem of this study is to compare the present practice in the field of leadership education in certain representative local Methodist Churches in the Central Texas Conference with 1) the procedures recommended by the Methodist Church, and 2) the specific needs of the local churches.
An Evaluation of the Library Service in the Sam Houston School, Corsicana, Texas
This study is the result of an evaluation conducted at the Sam Houston Secondary School library in Corsicana, Texas to determine if the needs of students were being met.
An Evaluation of the Literary Sources of Gulliver's Travels
This study examines and also evaluates the literary sources of Gulliver's Travels.
An Evaluation of the Los Fresnos Elementary School, Los Fresnos, Texas
The purpose of this study is to present the appraisal of the Los Fresnos Elementary School in terms of the criteria in the Handbook for Self-Appraisal and Improvement of Elementary Schools as made by a committee of twelve teachers of that school. Attention is given to the seven major areas of the school and to certain subtopics under each heading.
An Evaluation of the Methods and the Philosophy of Teaching English in the Secondary Schools of Texas as Reported in The Texas Outlook, 1925-1940
This thesis is the report of an investigation to determine and to evaluate the methods and the philosophy of the teaching of English in the secondary schools of Texas.
Evaluation of the Mid-Management Concept of Cooperative Education in a Practical Setting
No Description
An Evaluation of the Mineral Wells High School, Mineral Wells. Texas
This thesis offers an evaluation of the Mineral Wells, Texas high school. Fifteen hundred points associated with curriculum and school operation were evaluated to draw presented conclusions.
Evaluation of the Music Offerings in Seventy-Five Representative Texas High Schools
The purpose of this study is twofold: (1) to formulate the bases for a music curriculum to be offered at high school level; and (2) to evaluate the present music offerings in seventy-five representative Texas high schools.
An Evaluation of the Music Programs in the Seventh-Day Adventist Academies in the United States
No Description
An Evaluation of the New Boston Secondary School
The purpose of this study is to determine the weak points and the strong point of the secondary school in New Boston, Texas, and to offer suggestions for improvement.
An Evaluation of the Newbery Medal Books
The writer's purpose in this study has been to make a thorough investigation of the Newbery Medal books to determine if they represent the best literature suitable for children's reading that has been published since 1922, and to investigate carefully the group as a whole to see if the books possess those rare qualities and characteristics which, deservedly, would set them apart from the ordinary type of books usually designated as suitable for children's reading.
An Evaluation of the Out-of-Class Activity Program of Sherman High School
The problem of this study is to make an evaluation of the out-of-class activity program of the Sherman High School.
An Evaluation of the Out-of-School-Youth National Defense Program Number 4 in Texas
The purpose of the evaluation is to determine, in a measure, the costs of the program, the interest shown in it, and the benefits derived from it. It is the further desire of the investigator to learn to what extent the program now fits into our educational system, and what changes may be necessary for the future use of the program in our educational system.
An Evaluation of the Performance of Advisory Boards Serving Selected Schools of Business Administration
The purpose of this study is to evaluate the performance of advisory boards serving schools of business. This evaluation is based upon perceptions held by business school deans, department heads, and advisory board members concerning the most significant objectives established for advisory boards and the extent to which they have been attained.
The Evaluation of the Philosophy Underlying the Administration of the Large Texas High School
The purpose of this study is to make an investigation of the philosophy underlying the administration of the large Texas high school. The criteria for evaluation will be taken from a study of recent literature, and the administrative practices of the schools will be evaluated in the light of these standards.
An Evaluation of the Physical Education Program and Facilities in Secondary Schools of District 10AA of the Texas Interscholastic League
The purpose of this study is to make an evaluation of the physical education program and facilities in the secondary schools of District 10AA of the Texas Interscholastic League, comprising six counties in North-central Texas. The general scope of the problem is to determine how effectively the high schools of this district are conforming to certain standards for physical education as formulated by recognized authorities in the field and as outlined in courses of study issued by the Texas State Department of Education.
An Evaluation of the Physical Education Program of Arlington State College with Recommendations for Future Development
The problem undertaken in this investigation was that of making an evaluation of the Physical Education Program of Arlington State College with recommendations for future development.
Evaluation of the Preparation for Adult Living Training Program for Severely Emotionally Disturbed Adolescents in a Residential Treatment Center
The purpose of this study was to determine the effectiveness of the Preparation for Adult Living skills training program by measuring the learning gains and learning outcomes of students participating in the training. The quasi-experimental posttest control group design was used. A treatment sample of twelve students received the Preparation for Adult Living training. A nontreatment sample was selected by matching the characteristics of educational and reading level and the gender of twelve students with no previous independent living skills training with those of the treatment sample. Students in the treatment sample were tested for learning gains using the Preparation for Adult Living Test. Both the treatment and nontreatment sample were tested using the post-training Preparation for Adult Living Scale to determine the level of their learning outcomes. The Preparation for Adult Living Test results were analyzed using the t-test for correlated samples of pretests and posttests. The t-test for independent samples was used to analyze the Preparation for Adult Living Scale results to determine the students' learning outcomes. A Pearson r correlation coefficient was calculated for Preparation for Adult Living Scale scores to determine if a relationship existed between employment and the life coping skills of the treatment sample. The findings indicated that no learning gains were made during the training, but that the training had an impact on the students' post-training life-coping skills. A strong relationship was found between the specific life-coping and employment skills of the treatment sample. Investigation of the reliability and validity of the Preparation for Adult Living Test and Scale instruments was recommended.
Evaluation of the Present Methods of Reporting the Progress of Primary Pupils in City Schools of Texas and the Development of a More Desirable System
The problem of this study is to evaluate the methods of reporting pupil progress in the primary grades of Texas schools comparable in size to that of Wichita Falls, Texas, and to set up criteria from which could be developed a more desirable reporting system for the primary grades. The main purpose is to establish a more adequate program for parent-teacher-pupil relationship and understanding through a philosophy based on the development of the whole child.
An Evaluation of the Professional Training of Secondary School Principals at North Texas State College:1939-1949
The purpose of the study is to trace the origin and development of the public school principalship, to present past and present certification standards for the principalship as expressed by leading educators and certifying officials in the various states, and to select a group of graduates of North Texas State College and measure their training and aptitudes against those stated.