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  Partner: UNT Libraries
 Language: English
 Collection: UNT Theses and Dissertations
Effects of Visible Monochromatic Radiations on Growth of Pith Callus Tissue of Pelargonium Zonale

Effects of Visible Monochromatic Radiations on Growth of Pith Callus Tissue of Pelargonium Zonale

Date: August 1966
Creator: Ward, H. Bailey
Description: It was the purpose of the investigation to determine the effects of selected high intensity monochromatic radiations on the growth of pith callus tissue of Pelargonium zonale, variety Enchantress Fiat. In addition, the extent of cell differentiation was to be determined for tissues grown under each experimental treatment.
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The Effects of Visits by Authors of Children's Books in Selected Elementary Schools

The Effects of Visits by Authors of Children's Books in Selected Elementary Schools

Date: May 1987
Creator: Staas, Gretchen L. (Gretchen Lee)
Description: Guest author visits are popular events in schools across the United States. Little has been written, however, on a single author doing a single presentation in a school. This study addressed that situation. The study utilized two authors visiting four schools in a large North Central Texas school district.
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The Effects of Voluntary Lateral Orienting on Positive Manifold for Lateralized Cognitive Tasks

The Effects of Voluntary Lateral Orienting on Positive Manifold for Lateralized Cognitive Tasks

Date: August 1989
Creator: Urbanczyk, Sally Ann
Description: As an extension of previous studies (Urbanczyk, Angel, & Kennelly, 1988) examining the effects of unimanual finger tapping on lateralized cognitive tasks, lateral body orienting was added to an established dual task paradigm to generate differential hemispheric activation and shifts of attention. One hundred twenty university students retained sequences of digits or spatial locations for 20 seconds either alone or during finger tapping. By turning both head and eyes left or right, the hemisphere congruent with the sequences (LH for digits, RH for locations) or incongruent (vice versa) was activated. Activation had little effect on retention means but greatly affected resource composition supporting task performance. Congruent orientation produced significantly higher positive correlations between digit and location tasks than incongruent orientation. Females showed higher sequence retention correlations than males across both orienting groups. For females, congruent activation enhanced tapping rates and retention-tapping correlations. For males, activation affected neither of these. Discussed in light of neuroanatomical research, these results suggest that congruent attentional orienting may integrate regions of the less activated hemisphere into networks of the more activated hemisphere. This unification may occur more readily across the female corpus callosum, producing a greater dependence upon a general attentional resource than for males, ...
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The Effects of Water Pollution Control Laws on Industrial Plant Location

The Effects of Water Pollution Control Laws on Industrial Plant Location

Date: May 1969
Creator: Montgomery, Austin Homer, 1928-
Description: The objective of this research is to determine the degree to which the recent antipollution laws will affect the location of industrial plants.
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Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas

Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas

Date: December 1989
Creator: Arnold, Winfred R., 1960-
Description: The Trinity River flows through the Dallas-Ft. Worth Metroplex in north central Texas where it receives effluents from numerous point sources including seven large regional wastewater treatment facilities. Historically, the Trinity River has been impacted by massive wastewater loadings which often constitute > 80% of the total river discharge during low flow periods. Normally, high mass loadings correspond to the summer months, compounding the effects of a naturally stressful period, characterized by high temperatures and low dissolved oxygen concentrations. Samples from 12 stations were collected quarterly over an 18 month period from the Trinity River and two tributaries. Water samples were analyzed for a variety of water quality variables, including metals, priority pollutants, pesticides, and general water quality parameters. Water samples were also tested for acute and subchronic effects with several test species. Fish were collected at each station and assemblages were characterized using traditional classification techniques and the Index of Biotic Integrity. In addition, sediment samples were assessed for toxic effects which could have adversely impacted fish recruitment and in situ biomonitoring experiments were performed. Quantitative habitat characterization analyses were performed to gain additional information that could possibly explains differences in fish assemblage structure related to habitat variability. Data ...
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Effects of Water Source, Suspended Solids, and Acclimation on Biotransformation of 2 /4-Dichlorophenoxy Acetic Acid in Aquatic Systems

Effects of Water Source, Suspended Solids, and Acclimation on Biotransformation of 2 /4-Dichlorophenoxy Acetic Acid in Aquatic Systems

Date: August 1985
Creator: Moses, Christopher K.
Description: None
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The Effects of Weight Loading and Repetitions, Frequency of Exercise, and Knowledge of Theoretical Principles of Weight Training on Changes in Muscular Strength

The Effects of Weight Loading and Repetitions, Frequency of Exercise, and Knowledge of Theoretical Principles of Weight Training on Changes in Muscular Strength

Date: January 1970
Creator: Henderson, Joe Mack
Description: The purpose of this study was to determine the effects of weight loadings and repetitions, frequency of exercise, and knowledge of theoretical principles of weight training on changes in muscular strength. Another purpose was to analyze these effects and determine implications for coaches, physical educators, physical therapists, and others interested in determining the optimum combination of the three variables for increasing muscular strength.
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Effects of Whisker-Trimming on GABAA Receptors in S1 Cortex

Effects of Whisker-Trimming on GABAA Receptors in S1 Cortex

Date: August 2004
Creator: Salazar, Eduardo
Description: A number of studies have shown that sensory deprivation is associated with selective decreases in GABA, GAD, and GABA receptors, in deprived areas of visual and somatosensory cortex. Those studies focused on layer 4, a recipient of direct thalamocortical sensory input. However, supragranular layers 2/3 have been recently identified as a major locus of functional plasticity in sensory deprivation and long-term potentiation. To examine whether GABAA receptors in layers 2/3 are affected by sensory deprivation, rats had mystacial vibrissae in middle row C or rows ABDE trimmed for 6 weeks beginning in early adulthood. Layers 2/3 above the deprived and adjacent whisker barrels were located in tangential sections, using patterns of radial blood vessels as fiducial marks. In deprived whisker barrel columns, [3H]muscimol binding to GABAA receptors decreased by 12.8% ± 1.2 (P &lt; 0.001) in layers 2/3 and 11.4% ± 1.2 (P<0.001) in layer 4. Altered levels of GABAA α1 subunit (Fritschy et al., 1994) were indicated by reduced optical density of immunostaining, both in deprived layers 2/3 (6.4% ± 0.7; P&lt; 0.001) and in layer 4 (3.4% ± 1.0; P &lt; 0.005). Interestingly, Nissl staining density also decreased in deprived layers 2/3 (12.7% ± 1.8 P &lt; 0.001) ...
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The Effects of Workshop Training and Coaching on the Acquisition and Generalization of Teaching Skills

The Effects of Workshop Training and Coaching on the Acquisition and Generalization of Teaching Skills

Date: December 2003
Creator: Almon, Holly C.
Description: The purpose of this study was threefold: (a) to examine the separate effects of increased accuracy on multiple-choice/rank-order written tests and coaching on the teaching performance of participants; (b) to compare generalization across tasks produced by the workshop and coaching; and (c) to assess maintenance of teaching performance. Following baseline, two adults received a lecture on discrete trial teaching procedures. A written test measured verbal performance on workshop material periodically throughout this phase. During the next phase, each adult then experienced further training via in-situ coaching. A multiple baseline design across tasks was used during the coaching phase. Results of the workshop training package revealed an inverse relationship between the strongest verbal performance and strongest teaching performance skill areas. In addition, only with the introduction of the in-situ coaching package did teacher performance improve significantly across all behaviors. Child responding remained relatively constant throughout the study, regardless of teacher performance. Some generalization of teacher behavior was observed across tasks, but was extremely variable across both workshop and coaching conditions. After the cessation of coaching, teacher performance remained stable across maintenance phases and at a 6-week follow-up.
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The Effects of Writing-to-learn Tasks on Achievement and Attitude in Mathematics

The Effects of Writing-to-learn Tasks on Achievement and Attitude in Mathematics

Date: May 1994
Creator: Millican, Beverly Robinson
Description: The problem of this study was to determine the effects of implementing writing-to-learn tasks in mathematics instruction on fourth grade students' achievement and attitude toward mathematics. Also addressed in this study is whether or not achievement and attitude measures of female students and low achieving students are effected by the use of writing in mathematics.
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The Effects of Written Comment on Expository Composition

The Effects of Written Comment on Expository Composition

Date: June 1970
Creator: Gee, Thomas C., 1940-
Description: This study was planned to investigate the effects of written comments on the expository compositions of eleventh-grade students using a cross section of ability groups. Data for combined groups and data for high-, middle-, and low-ability groups were used to determine whether one type of comment was more effective than another in improving the quantity and quality of student compositions and in improving student attitudes toward composition. Teachers may use the findings as a guide to what kinds of comments are most effective in reinforcing good writing skills and attitudes.
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Effects of X-Irradiation of Respiration in Frog Brain Tissue Slices Using the Oxygen Electrode Method

Effects of X-Irradiation of Respiration in Frog Brain Tissue Slices Using the Oxygen Electrode Method

Date: August 1971
Creator: Lin, Chen-hsiung
Description: The effects of X-irradiation at dosages of 40 r, 80 r, 160 r, 240 r, 320 r, 400 r, 800 r, 4 Kr, 8 Kr, and 16 Kr on the oxygen uptake of frog brain (Rana pipiens) tissue slices were studied. A membrane-covered oxygen electrode method was used to measure the respiratory rate. Continuous recordings were made before, during, and following X-irradiation in all of the test experiments. X-irradiation was delivered from a G. E. beryllium window X-ray unit at 120 KVP, 5 ma with a 1/4 mm Al filter.
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Effects of X-irradiation on Ion Flux in Desheathed Toad Sciatic Nerves

Effects of X-irradiation on Ion Flux in Desheathed Toad Sciatic Nerves

Date: January 1969
Creator: Albin, Leslie O.
Description: The purpose of this thesis is to determine the effects of x-irradiation on the efflux of potassium, sodium and calcium ions from stimulated and unstimulated desheathed sciatic nerves.
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Effects of X-Irradiation on Na22 Efflux in Isolated Nerves

Effects of X-Irradiation on Na22 Efflux in Isolated Nerves

Date: January 1964
Creator: Yang, Chui-hsu
Description: The purpose of this study was twofold: 1) to present experimental data on changes in permeability of fibers during irradiation using Na22 as the tracer isotope, and 2) to attempt to correlate these findings with the electrical changes observed.
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Effects of X-irradiation on Potassium Flux in Isolated Nerves

Effects of X-irradiation on Potassium Flux in Isolated Nerves

Date: August 1966
Creator: Ramsey, Christian Norman
Description: The purpose of this study, therefore, was threefold in nature: (1) to determine the effects of x-irradiation on the influx and efflux of potassium in compound nerve fibers (2) to attempt to relate the radiation-induced changes in electrical activity with potassium flux and (3) to use the information obtained to gain insight into the possible cellular site (s) of radiation insult to compound nerves.
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Effects of X-Irradiation on Water and Ion Flux in Isolated Roots

Effects of X-Irradiation on Water and Ion Flux in Isolated Roots

Date: January 1967
Creator: Wall, Malcolm J.
Description: Due to the relatively small amount of work concerning radiation, it was thought feasible to use ionizing radiation as a tool to study the relationship between water and salt flux in isolated root systems. Moreover, the more quantitative potometric method lends itself well to such a study, since the two processes can be followed simultaneously. the aims of this study, therefore, were 1) to determine effects of X-irradiation on water, calcium and potassium flux in excised onion roots; 2) to determine the dose levels required for producing permeability changes; 3) to investigate the nature of radiation damage to root systems; and 4) to attempt to shed light on the relation between water transport and ion movement in root systems.
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Effects on Survival, Reproduction and Growth of Ceriodaphnia dubia following Single Episodic Exposure to Copper or Cadmium

Effects on Survival, Reproduction and Growth of Ceriodaphnia dubia following Single Episodic Exposure to Copper or Cadmium

Date: August 2005
Creator: Turner, Philip K.
Description: Effects of episodic exposures have gained attention as the regulatory focus of the Clean Water Act has shifted away from continuous-flow effluents. Standardized laboratory toxicity tests require that exposure be held constant. However, this approach may not accurately predict organism responses in the field following episodic exposures such as those associated with rain-driven runoff events or accidental pollutant discharge. Using a modified version of the 7-day short-term chronic test recommended by the US Environmental Protection Agency, Ceriodaphnia dubia were exposed to copper or cadmium for durations ranging from 1 minute to 24 hours. In addition, adult reproductive recovery and effects on second generation individuals was assessed following select copper exposures. Finally, cadmium exposures were compared in reconstituted hard water (RHW) and municipal treated wastewater effluent (TWE). Following exposure, organisms were transferred to clean RHW or TWE and maintained for the remainder of the test. No- and lowest observed effect concentrations (NO- and LOECs) increased logarithmically with respect to logarithmic decreases in duration regardless of metal, endpoint or water type. Effective concentrations of cadmium however, were usually higher than those of copper, especially in TWE. LOECs for C. dubia survival following 24-hour and 5-minute exposures to copper were 116 and 417 ...
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Efficacy in Texas Charter Schools Compared to Traditional Public Schools

Efficacy in Texas Charter Schools Compared to Traditional Public Schools

Date: August 2015
Creator: Keller, Karlyn
Description: The need to spur innovation and improve student performance initiated the formation of, under different legislative acts, charter schools that include variations of traditional public schools. With the enthusiasm and level of investment going into the formation of charter schools, it is necessary to explore whether these schools have achieved their objectives. This study explored whether Texas open enrollment charter schools perform bettered compared to Texas public schools. The study applied a causal comparative quantitative research design. School data on graduation and dropout rates, college preparation, attendance rates, and overall performance were analyzed quantitatively. Student achievement data available for statistical analysis includes student performance on the Texas Assessment of Knowledge and Skills (TAKS) state assessment from 2007 to 2011. Data analysis for race, special programs, at risk, economically disadvantaged, and limited English proficiency was incorporated. Descriptive statistics and analysis of variance techniques were included in the data analysis. The analysis extended to post hoc tests to determine variables that caused variation. The study found Texas open-enrollment charter schools had more African American students but fewer Whites compared to public schools. Students in public schools performed better than those in charter schools, and Whites yielded the best performance. Charter schools had ...
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The Efficacy of Anxiety-Relief Therapy and Systematic Desensitization in the Treatment of Snake-Phobic Behavior

The Efficacy of Anxiety-Relief Therapy and Systematic Desensitization in the Treatment of Snake-Phobic Behavior

Date: December 1973
Creator: Sealy, Thomas Beauchamp
Description: The purpose of this study is to determine the efficacy of anxiety-relief therapy when compared with three other treatment groups (group systematic desensitization; a pseudo-therapy, suggestion, group; and a no-treatment group).
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The Efficacy of Equine Assisted Group Counseling with At-Risk Children and Adolescents

The Efficacy of Equine Assisted Group Counseling with At-Risk Children and Adolescents

Date: December 2006
Creator: Trotter, Kay Sudekum
Description: The purpose of this study was to determine the efficacy of equine assisted group counseling as compared to in-school curriculum group guidance/counseling. Research examined externalizing, internalizing, maladaptive, and adaptive behaviors of elementary and middle school students who were considered at-risk of academic or social failure. Two types of behavior instruments, the Behavioral Assessment System for Children (BASC)-Self-Rating, Parent-Rating, and Teacher-Rating Scales; and the Animal Assisted Therapy-Psychosocial Session Form (AAT-PSF), were used in a pretest-posttest comparison group quasi experimental design. Results of the paired sample t-test analysis of the BASC Self-Report indicated that the equine assisted counseling group showed statistically significant improvement in five behavior areas, and the in-school curriculum group guidance/counseling group showed statistically significant improvement in four areas, with only one behavior area the same as the equine assisted counseling group. Results of the paired sample t-test analysis of the BASC Parent-Report indicated that the equine assisted counseling group showed statistically significant improvement in twelve behavior areas, whereas the in-school curriculum group guidance/counseling showed statistically significant improvement in only one behavior area. Results of the paired sample t-test analysis of the BASC Teacher-Report indicated that the equine assisted counseling group showed no statistically significant improvement; however the in-school curriculum ...
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The Efficacy of Filial Therapy with Families with Chronically Ill Children

The Efficacy of Filial Therapy with Families with Chronically Ill Children

Date: May 1997
Creator: Tew, Kristi L. (Kristi Lee)
Description: This study was designed to determine the effectiveness of Filial Therapy as a method of intervention with families with chronically ill children. Filial Therapy is an intervention that focuses on strengthening and enhancing the parent-child relationship. Parents are trained to become the agents of change for their children's behaviors by utilizing basic child-centered play therapy skills in weekly play sessions. The purpose of this study was to a) determine the effectiveness in decreasing parental stress, b) determine the effectiveness in increasing parental acceptance, and c) determine the effectiveness in decreasing problematic behaviors in the chronically ill child as assessed by their parents.
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The Efficacy of Intensive Individual Play Therapy for Children Diagnosed with Insulin-Dependent Diabetes Mellitus

The Efficacy of Intensive Individual Play Therapy for Children Diagnosed with Insulin-Dependent Diabetes Mellitus

Date: August 2000
Creator: Jones, Elizabeth Murphy
Description: This study was design to determine the efficacy of intensive individual play therapy as a method of intervention for children diagnosed with insulin-dependent diabetes mellitus. The purpose of this study was designed to study the effectiveness of an intensive play therapy intervention in: a) reducing symptoms of childhood depression in children with IDDM; b) reducing symptoms of anxiety in children with IDDM; c) reducing the overall behavior difficulties in children with IDDM; d) increasing healthy adjustment in children with IDDM; e) increasing diabetic's children's adherence to their diabetic regime; and f) impacting these emotional and behavioral symptoms over time. The 15 children in the experimental group received 12, daily play therapy sessions while attending a summer camp for children with diabetes. The control group, consisting of 15 children who attended the diabetic summer camp, received no play therapy. Children and parents in both groups completed pretest, post-test and three-month follow-up data, consisting of: the Children's Depression Inventory, the Revised Children's Manifest Anxiety Scale, the Filial Problems Checklist and the Diabetes Adaptation Scale. Analysis of covariance revealed that the children in the experimental group significantly improved their adaptation to their diabetes following intensive play therapy as reflected by the Diabetes Adaptation ...
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Efficacy of Juvenile Offender Assessments: Utilization of Recommendations, Measurement Constructs, and Risk Factors

Efficacy of Juvenile Offender Assessments: Utilization of Recommendations, Measurement Constructs, and Risk Factors

Date: August 2002
Creator: Van Drie, Barbara G
Description: The purpose of this study was to explore the efficacy of juvenile offender assessments. Data from 104 juvenile offender assessments were analyzed and followed up with placement, subsequent offending, and outcome data from the juvenile and adult systems. Constructs consistently assessed included intellectual functioning, academic achievement, and personality functioning; however, under-diagnosis of intellectual deficits, learning disabilities, and personality disorders was found. Results indicated the assessment of family functioning, substance use, and social functioning should be included in comprehensive assessments, as they may result in alternative placement and treatment options of benefit to the juvenile offender. A juvenile offender typology proposed by DiCataldo and Grisso (1995) was successfully utilized and proved predictive of recidivism, future harm to others, and outcome.
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Efficacy of neurofeedback for children with histories of abuse and neglect: Pilot study and meta-analytic comparison to other treatments.

Efficacy of neurofeedback for children with histories of abuse and neglect: Pilot study and meta-analytic comparison to other treatments.

Date: August 2008
Creator: Huang-Storms, Lark
Description: This two-part study investigates the effectiveness of neurofeedback training for reducing behavioral problems commonly observed in abused/neglected children, and compares its efficacy to other treatment interventions with this population. Neuro-developmental sequelae of early relationship trauma are explored as an etiological framework for understanding disturbed affect-regulation, which appears central to the behavioral and emotional difficulties commonly experienced by this pediatric population. It is suggested that neurofeedback teaches children to self-regulate brain rhythmicity mechanisms, which in turn affects global improvements in behavior and mood. The pilot study utilizes records of 20 children removed from their biological homes by Child Protective Services. Children were assessed prior to treatment using the Child Behavior Checklist (CBCL) and the Test of Variables of Attention (TOVA), and again after 30 sessions of individualized, qEEG-guided neurofeedback training. A t-test analysis of pre- and post-scores was computed, and indicated significant improvements following treatment. A meta-analysis of existing literature on treatment interventions with abused/neglected children provides individual and aggregate effect sizes for 33 outcome studies with this clinical population, and contextualizes the results of the present pilot study within other empirically validated treatment modalities. Establishment of an overall effect size for treatment for this pediatric population provides a needed method ...
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