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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma

Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma

Date: May 2000
Creator: Franks, Jessica L.
Description: Seventy-one aquatic species including the copepodids and nauplii were identified from Lake Texoma from August 1996 to September 1997. Zooplankton community structure, abundance and spatial and temporal distributions were compared among five lake zones delineated a priori based on chloride concentration. The zones, in order of decreasing chloride concentration, are the Red River zone (RRZ), Red river Transition zone (RRTZ), Main Lake zone (MLZ), Washita River Transition zone (WRTZ) and Washita River zone (WRZ). Bray Curtis Similarity Index showed community structure was most similar in the two Red River arm zones, the two Washita River arm zones and the MLZ. Zooplankton abundance was greatest in the Red River arm (312 org/L), intermediate in the Washita River arm (217 org/L) and least in the Main Lake body (103 org/L). A significant increase in the abundance of a deformed rotifer, Keratella cochlearis, was observed mainly in the Red River arm during a second study from March 1999 to June 1999. Seasonal dynamics, rather than spatial dynamics, were more important in structuring the zooplankton community, especially in the two river arms. Spatial variance was solely attributed to station and zone effects independent of time for a few crustacean species and many of the ...
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Student services in Bible colleges and universities accredited by the Accrediting Association of Bible Colleges (AABC)

Student services in Bible colleges and universities accredited by the Accrediting Association of Bible Colleges (AABC)

Date: May 2000
Creator: Rogers, Kathi L.
Description: This study attempted to determine the types, extent, and quality of student personnel services in colleges and universities accredited by the Accrediting Association of Bible Colleges (AABC). The Basic Services Questionnaire (BSQ) was adapted for use among Bible colleges and universities and mailed to chief student affairs officers representing 69 Bible colleges in the United States accredited by the AABC. Of the 71 surveys mailed (two institutions employed both a Dean of Men and Dean of Women), 46 were returned for a response rate of 65 percent. Chi-square tests of goodness-of-fit were performed on the data in order to categorize the types, extent, and quality of student services provided by the institutions. The Mueller-Schuessler Index of Qualitative Variation was used to determine the homogeneity, or heterogeneity, of the chief student affairs officers when grouped according to specific variables (gender, ethnic origin, major for highest degree earned, and highest degree earned). Frequency counts and percentage distributions were used on demographic data to present a profile of chief student services administrators at AABC schools. The results of the study point to four conclusions. First, the types of student personnel services provided by American Bible colleges and universities accredited by the AABC closely ...
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A Study of Graphically Chosen Features for Representation of TREC Topic-Document Sets

A Study of Graphically Chosen Features for Representation of TREC Topic-Document Sets

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Date: May 2000
Creator: Oyarce, Guillermo Alfredo
Description: Document representation is important for computer-based text processing. Good document representations must include at least the most salient concepts of the document. Documents exist in a multidimensional space that difficult the identification of what concepts to include. A current problem is to measure the effectiveness of the different strategies that have been proposed to accomplish this task. As a contribution towards this goal, this dissertation studied the visual inter-document relationship in a dimensionally reduced space. The same treatment was done on full text and on three document representations. Two of the representations were based on the assumption that the salient features in a document set follow the chi-distribution in the whole document set. The third document representation identified features through a novel method. A Coefficient of Variability was calculated by normalizing the Cartesian distance of the discriminating value in the relevant and the non-relevant document subsets. Also, the local dictionary method was used. Cosine similarity values measured the inter-document distance in the information space and formed a matrix to serve as input to the Multi-Dimensional Scale (MDS) procedure. A Precision-Recall procedure was averaged across all treatments to statistically compare them. Treatments were not found to be statistically the same and ...
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A study of vocabulary instruction with fourth grade students participating in an individualized reading program

A study of vocabulary instruction with fourth grade students participating in an individualized reading program

Date: May 2000
Creator: Pilgrim, Jodi L.
Description: he purpose of this study was to determine the effects of one approach to vocabulary instruction on the reading and writing vocabulary of fourth grade students in an individualized reading program. The vocabulary instructional approach used student-selected vocabulary words as well as instruction in vocabulary strategies such as context clues, structural analysis, and definition strategies. The twelve week study exposed one fourth grade classroom to vocabulary instruction in a Reading Workshop setting. Major components of the program were mini-lessons, which often involved vocabulary strategies, the silent reading of self-selected books, one-on-one researcher/student interactions, and the self-selection of vocabulary words. The research design is descriptive in nature and used both qualitative and quantitative research methods. Qualitative data included student interviews, teacher interviews, student writing samples, and field note observations. Quantitative data included vocabulary test scores from two groups of students, Group A and Group B. Group A participated in the self-selected vocabulary approach and received vocabulary instruction from the researcher acting as participant observer. Group B received some vocabulary instruction from their classroom teacher, but did not participate in the same program. The test was constructed weekly from a class (Group A) generated list of ten words. Results from vocabulary tests ...
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A survey of mentor/mentee activities in beginning teacher induction programs in Region XI

A survey of mentor/mentee activities in beginning teacher induction programs in Region XI

Date: May 2000
Creator: Wright, Telena
Description: The recruitment and retention of teachers demand attention with estimates of two million new teachers needed in the next decade. Hiring under qualified teachers necessitates adequate induction programs. Development of a recommendation for a teacher induction program comprises the purpose of the study. The recommended induction and support program addresses the activities perceived as valuable by both mentors and mentees. The researcher describes the mentor programs currently in place in Region XI in northern Texas by surveying the mentors and mentees; of particular relevance is a determination and description of the program model in place. Data sources include the literature review and information obtained from Region XI mentors/mentees. Data shows the model in Region XI is primarily a colleague model. Mentors and mentees are matched for grade level, content area and physical proximity. Three of the most frequently occurring activities are in the category emotional support, three in logistical concerns, two in systems information, one in student management, and one in instructional support. Mentees believe those activities associated with classroom management and organization and developing confidence and self-esteem are most important. Mentors concur. Specific recommendations for structuring a comprehensive beginning teacher induction and support program include reexamining the program currently ...
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Synthesis and characterization of molecules to study the conformational barriers of fluorocarbon chains

Synthesis and characterization of molecules to study the conformational barriers of fluorocarbon chains

Date: May 2000
Creator: Niyogi, Sandip
Description: Fluorocarbons are known to be stiffer than their hydrocarbon analogues, a property that underlines the extensive industrial application of fluorocarbon materials. Although there has been previous studies on the rotational barrier of molecules having fluorocarbon centers, a detailed systematic study is necessary to quantify flurocarbon stiffness. The molecules, Pyrene-(CF2)n-Pyrene, Pyrene-(CF2)n-F, Pyrene-(CH2)n-Pyrene and Pyrene-(CH2)n-H were therefore synthesized to enable the determination of the barrier to rotation of the carbon backbone in fluorocarbons. Conformational studies will be completed with steady-state and time-dependent emission spectroscopy.
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Teamwork in the Nursing Home: The Art of Caring for Long-Term Care Residents

Teamwork in the Nursing Home: The Art of Caring for Long-Term Care Residents

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Date: May 2000
Creator: Saxon, Juliane M.
Description: The effects of teamwork in a long-term care setting were explored, and four key elements of teamwork in the long-term care facility were discovered. These elements--clarity of purpose, clear communication, well-defined decision-making procedures, and participative leadership--are presented in detail. The literature reviewed as well as observations from personal participation in a case study show that employing the teamwork concept in a nursing home environment significantly enhances the quality of life for the residents of such facilities.
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The Texas Bandmasters Association: A Historical Study of Activities, Contributions, and Leadership (1920-1997)

The Texas Bandmasters Association: A Historical Study of Activities, Contributions, and Leadership (1920-1997)

Date: May 2000
Creator: Shoop, Stephen Scott
Description: The purpose of the study was to investigate the leadership role of the Texas Bandmasters Association (1920-1997) in the development of the band program in Texas. It sought to determine TBA's effect on the band movement in Texas, and ascertain how the TBA has contributed to the emphasis on performance focus that is associated with the Texas band tradition. In doing so, the study also provided information regarding the association's goals, purposes, activities, and contributions during the time period under investigation. The historical data for the study was compiled from documentary sources and personal interview. Documentary sources included minutes of meetings from 1920-1997, information contained in various periodicals including the Southwestern Musician combined with the Texas Music Educator, and a nearly complete set of clinic-convention programs. Historical data from past researchers, including several masters theses and doctoral dissertations, and tapes and transcripts of interviews conducted by past researchers, as well as interviews conducted by this researcher, were also utilized. Much of the historical data for the study was located at the Texas Music Educators Association archives, housed at the association headquarters in Austin, Texas. The researcher identified five periods of the association's history. In addition to developing a historical chronology, ...
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Training Siblings of Children with Autism to Instruct Play: Acquisition, Generalization, and Indirect Effects

Training Siblings of Children with Autism to Instruct Play: Acquisition, Generalization, and Indirect Effects

Date: May 2000
Creator: Randall, Domonique Y.
Description: A multiple baseline design was employed to evaluate the effectiveness of a sibling training package including modeling, role-play, and feedback on play and engagement between children with autism and their siblings. The results of two experiments suggest that, following training, siblings of children with autism correctly implemented all trained interaction components. Additionally, Experiment II assessed and programmed generalization to other materials and a non-training setting. The results showed that some unprogrammed generalization to non-trained toys occurred. Conversely, siblings engaged in trained skills in a non-training setting (home) only following the experimenter's instructions to generalize. In both experiments, the siblings' overall engagement and physical proximity of play in training sessions increased significantly above baseline. This study extends previous research in that it includes additional stimulus and response generalization measures.
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Tuberculosis in the Nursing Home: A Policy and Procedure Manual

Tuberculosis in the Nursing Home: A Policy and Procedure Manual

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Date: May 2000
Creator: Mounts, Camilla M.
Description: Tuberculosis in the nursing home is an ever-growing problem for the health care community. The incidence of tuberculosis in the United States has risen alarmingly since 1982, and high-population environments such as nursing homes are among the places where it is most prevalent. The first part of this document is an introduction to the current concerns faced by nursing home infection control personnel. It includes information about the history, symptoms, and epidemiology of the disease, as well as other topics. The second part is a policy and procedure manual that contains a basic guide to methodical testing for tuberculosis, steps for dealing with active cases of the disease, and suggestions for education of nursing home health care workers.
Contributing Partner: UNT Libraries