Digital Commons Network^™

Attitudes Toward Higher Education And Acculturation Amongst Native American College Students, Darlene Marie Wilcox

Theses and Dissertations

This study was designed to investigate attitudes and acculturation levels at a tribal community college to see if they differ from those at a four year state institution. In this study, the NACSAS (Native American College Student Attitudes Scale), and the NPBI (Northern Plains Bicultural Inventory) were administered to Native American college students at both types of colleges.

Results show that there were significant differences between the schools on the subscale of the NPBI, in the “European American Cultural Identification” (EACI) category, and on the NACSAS, on the “Perceived Racism” category. There were more students classified in EACI subscale at …

The Suburban Middle Class At Risk: A Profile Of Students Who Are Referred To The Office, Carole Joyce Pearson

Theses and Dissertations

The focus of this study was to identify the at risk students at a suburban high school based on the frequency of referrals to the office, and to determine why these students continue to misbehave. A list of students called down to the office was provided daily. Using the Call Down List, names of students who were referred to the office most frequently were compiled. A random sample of 23 students frequently on the list was used to develop a profile of the nature of the misbehavior, and the administrative action taken; patterns of attendance, lateness, and academic standing …

Image Fusion Using Autoassociative-Heteroassociative Neural Networks, Claudia V. Kropas-Hughes

Theses and Dissertations

Images are easily recognized, classified, and segmented; in short, analyzed by humans. The human brain/nervous system; the biological computer, performs rapid and accurate image processing. In the current research the concepts of the biological neural system provide the impetus for developing a computational means of fusing image data. Accomplishing this automatic image processing requires features be extracted from each image data set, and the information content fused. Biologically inspired computational models are examined for extracting features by transformations such as Fourier, Gabor, and wavelets, and for processing and fusing the information from multiple images through evaluation of autoassociative neural networks …

A Community Wide Study Of The Hospice Referral Process, Jarilyn K. Gess

Theses and Dissertations

The purpose of this research study was to understand the decision making process when seeking hospice care. The objectives were to identify the decision maker for the patient when seeking hospice care, why they were seeking hospice care, who initiated the referral, if the decision maker was aware they can self refer to hospice care, and the benefits of hospice care for the patient and family.

The study is a qualitative and quantitative descriptive study utilizing a telephone survey design as described by Dillman (1978). One hundred patients who had been referred to Hospice of the Red River Valley (HRRV) …

The Integration Of Military Adolescents In A Civilian High School, Terri L. Eide

Theses and Dissertations

This study identifies those factors that affect the integration of military and civilian adolescents in a public high school. The convenience sample includes 85 students from military families and 129 students from civilian families. They range in age 13 to 18 years of age. Subjects completed a questionnaire about their sense of belonging to the school environment, individual attachment to the school and others, and peer group association. The analysis revealed that adolescents from military families experience a slightly lower level of integration within the public high school studied than students from civilian families. Additionally, race, as well as military …

Gender Bias And Women In Leadership, Rose Mary Judge

Theses and Dissertations

The purpose of this study is to describe and evaluate the effectiveness of implementing a stronger equity plan to career major areas whose students have experienced inequity in a vocational program that perpetuates gender bias and harassment of female students. This particular sample involves twenty-two students who are in non-traditional career major areas.

Interviews involved the Building Principal, the Affirmative Action Officer, a Guidance Counselor, and two Career Major teachers. Surveys were used to collect data from students in non-traditional career majors. Questionnaires were given to all academic teachers. Data analysis consisted of using the information from the interviews, surveys, …

Increasing The In-Seat Behavior Of A Third Grade Boy With Adhd Using Positive Reinforcement And Self-Reinforcement, Michael J. Miltenberger

Theses and Dissertations

An ongoing challenge for all teachers, especially special education teachers, is developing intervention programs to control the behavior of their students. The author of this research project attempted to improve the in-seat behavior of a third grade boy with ADHD by implementing a behavior modification program using positive reinforcement and self-reinforcement. The author used positive reinforcement for five weeks before moving on to the self-reinforcement portion for an additional twelve weeks. The purpose was to increase the subject's in-seat behavior while also having him become actively involved in his behavioral program. The results show that the subject's in-seat behavior did …

Changing Destinies: An Overview Of The Human Genome Project, Jennifer Lynne Watson

Theses and Dissertations

The Human Genome Project was initiated in 1988. Its purpose being to sequence the entire human genome, including the noncoding regions by 2005. Through the research conducted, due to the project, several genes associated with specific diseases have been identified. This paper is a review of the Human Genome Project and genes that have been associated with the onset of specific diseases. Cystic Fibrosis, a disease affecting the respiratory system, has been isolated to a gene on chromosome 7. Alzheimer's Disease, the disease which is most responsible for dementia, has several genes associated with its onset. These genes lie on …

A Computer Assisted Study Guide For Viral Hepatitis, April, 1999, Diana Hullihen

Theses and Dissertations

The purpose of this project was to design a computer assisted program that would enhance the effectiveness of instruction in a clinical laboratory science program. Computer assisted instruction has been proven to be a beneficial and effective method of meeting educational objectives.

The topic of viral hepatitis is a complex and difficult one to teach. The instructor decided to supplement traditional lecture using computer assisted instruction. The goals and objectives of the lesson would be reinforced through this method as well as help the student to master the subject content.

The computer assisted study guide was designed to enhance the …

Effects Of Support Group Participation On Teachers, Scott Flanegin

Theses and Dissertations

The study observed, analyzed and evaluated the effects of support group participation on the psychological, emotional, and professional needs of teachers. The study used a qualitative research design to gather data on seven female high school teachers participating in a professional development group. The research instruments used included a pre- and post-survey, a questionnaire, and journal entries. The survey recorded data concerning each teacher's pattern of contacts with colleagues, level of job satisfaction, resources for problem-solving used by the individual, and demographic information. Data analysis tabulated and compared survey response percentages before and after the study. The questionnaire and journal …

What Effect Will Increased Parental Involvement In Science/Biology At Woodrow Wilson High School Have On The Improvement Of Students Academically?, Lasandra Watkins

Theses and Dissertations

The purpose of this study was to discover whether or not student achievement could be improved through the increased participation of parents/guardians for students enrolled in science classes.

High academic achievement in science courses has been rapidly declining for the past twenty or more years. With this decline in science has come a decline in the overall academic achievement of students.

To turn the tide of students failing to students excelling academically in the sciences, I believe that increasing the level and quality of parental involvement is "the solution" to this problem.

Students in my biology classes will participate in …

The Effects Of Professional Development On Student Performance Of At-Risk Students, Carol Mizrahi

Theses and Dissertations

The study focused on effective instructional strategies that could be used to improve student performance in the classroom and result in a classroom failure rate of less than 25%. The effects of a professional development workshop presented on instructional strategies were examined as they related to student performance.

The sample of this research consisted of eleven teachers who were required to attend a district-developed instructional strategies workshop based on a midterm failure rate more than 24% during the 1997-98 school year. Four methods of data collection were used: evaluation form, participant observations, interviews, and review of students' grades. The data …

Interval Matching And Control For Hexahedral Mesh Generation Of Swept Volumes, Jason F. Shepherd

Theses and Dissertations

Surface meshing algorithms require certain relationships among the number of intervals on the curves that bound the surface. Assigning the number of intervals to all of the curves in the model such that all relationships are satisfied is called interval assignment. Volume meshing algorithms also require certain relationships among the numbers of intervals on each of the curves on the volume. These relationships are not always captured by surface meshing requirements. This thesis presents a news technique for automatically identifying volume constraints. In this technique, volume constraints are grouped with surface constraints and are solved simultaneously. A sweepable volume has …

Modeling Chemical Absorption Through Membranes, Jeffrey M. Hemmes

Theses and Dissertations

Understanding the processes involved in dermal penetration of chemicals and drugs is important to both toxicologists and pharmacologists. Researchers developing new drugs are interested in enhancing the penetration of chemicals through the skin, while environmental professionals are interested in limiting such penetration. For both types of applications, predictive biologically-based mathematical models can be very useful in understanding the processes involved, particularly when such models are based on physiological and biochemical parameters which can be measured experimentally. In this thesis we study two existing physiologically-based pharmacokinetic (PBPK) models that predict concentrations of neat and aqueous dibromomethane (DBM) absorbed into and through …

Protein Structure Prediction Using Parallel Linkage Investigating Genetic Algorithms, Karl R. Deerman

Theses and Dissertations

AFIT has had a long-standing interest in solving the protein structure prediction (PSP) problem. The PSP problem is an intractable problem that if "solved" can lead to revolutionary new techniques for everything from the development of new medicines to optical computer switches. The challenge is to find a reliable and consistent method of predicting the 3-dimensional structure of a protein given its defining sequence of amino acids. PSP is primarily concerned with predicting the tertiary protein structure without regards to how the protein came to this folded state. The tertiary structure determines the protein's functionality.

Substrate Availability In Solid Waste Landfills, Brian D. Benter

Theses and Dissertations

Numerous models exist to both predict and represent the many biological activities that occur in the modern landfill. These different models use varying methods of characterizing what is happening, what is thought to happen, or what should be happening based on both empirical data and theoretical reasoning. The model presented here is an extension of the system dynamics model originally presented by Colborn in 1997. The revamped model presents a different perspective on what happens as solid organic waste is transformed to simpler substances. This new view involves a bacterial population performing hydrolysis whose growth is limited by the amount …

Natural Attenuation Of Chlorinated Ethenes By Anaerobic Reductive Dechlorination Coupled With Aerobic Cometabolism, Derek D. Veerkamp

Theses and Dissertations

Chlorinated solvents and their daughter products are the most common contaminants of groundwater at industrial and military facilities in the United States. Limitations of conventional technologies have intensified efforts to find alternative methods to remediate contaminated sites to regulatory goals set by CERCLA. Natural attenuation of chlorinated solvents is a promising alternative to traditional pump and treat methods but has not been well understood or widely accepted. This modeling study investigated the ability of TCE to completely degrade under various aquifer conditions and rate order constants. It also examined a case study of a former landfill site at Moody AFB. …

Biodegradation Of Aircraft Deicing Fluid Components In Soil, Baron W. Burke

Theses and Dissertations

Aircraft de-icing fluids (ADFs) are used worldwide to ensure safe aircraft operations. This research effort was conducted to analyze the biodegradation effects of two chemical components of ADFs, propylene glycol (PG) and tolyltriazole (TTA), in a high-clay soil. The research used four test methods; automated respirometry, high performance liquid chromatography (HPLC), microbial colony population counts (MCPC), and agar well diffusion tests (AWDT). The research was partitioned into two phases of investigation. Phase-one analyzed individual and combined ADF chemical components on uncontaminated soil. The presence of TTA, from 25 - 1,000 mg/kg, reduced the maximum respiration rate of 1,000 mg/kg PG …

Cost-Benefit Analysis Of Cosolvent Flushing To Treat Groundwater Contamination Source Areas, Stacey L. Anason

Theses and Dissertations

Dense non-aqueous phase liquids (DNAPLs) in the zone beneath the water table can be a virtually permanent source of groundwater contamination that cannot be remediated by currently available technologies. Cosolvent flushing is a new technology that has the potential to remediate these sites and could pose a solution to the problem of DNAPL source areas. A computer model was developed to determine the cost and time to remediate an aquifer using cosolvent flushing. Included in the model is a module to calculate the costs of recycling the alcohol that is used as the cosolvent. The model was validated using site …

A Comparison Of Genetic Algorithm Parametrization On Synthetic Optimization Problems, Mehmet Eravsar

Theses and Dissertations

Meta-heuristics have been deployed to solve many hard combinatorial and optimization problems. Parameterization of meta-heuristics is an important challenging aspect of meta-heuristic use since many of the features of these algorithms cannot be explained theoretically. Experiences with Genetic Algorithms (GA) applied to Multidimensional Knapsack Problems (MKP) have shown that this class of algorithm is very sensitive to parameterization. Many studies use standard test problems, which provide a firm basis for study comparisons but ignore the effect of problem correlation structure. This thesis applies GA to MKP. A new random repair operator, which projects infeasible solutions into feasible region, is proposed. …

Pilot Inventory Complex Adaptive System (Picas): An Artificial Life Approach To Managing Pilot Retention, Martin P. Gaupp

Theses and Dissertations

The retention of skilled pilots continues to be a problem that plagues the United States Air Force. After spending millions of dollars on training and education, it is disheartening to see the mass exodus of experienced aviators from the Air Force that has been occurring in the past decade. Many blame the economy, others the Air Force itself but few are able to accurately predict how or why they are all leaving. The current personnel models do not adequately determine retention rates. Complex adaptive systems theory, however, might provide some insight. By modeling the system at the pilot's level, allowing …

Expeditious Method For Estimating Cleanup Costs At Department Of Defense Installations In Korea, John M. Griffin

Theses and Dissertations

The purpose of this research was to develop and test a method that can be used to expeditiously estimate costs of hazardous waste site remediation at US DoD installations in Korea allowing decision-makers to formulate remediation strategy. This objective was addressed through answering the following questions: (1) What cost and time constraints do the decision-makers have in developing remediation cost estimates; (2) What degree of accuracy do the decision-makers require in cost estimates; (3) What estimating models are available for determining costs of remediation activities; (4) Have models been used to estimate remediation activities' costs at Korean installations; and (5) …

History Of The Juvenile Court The First Hundred Years, Judy Volk

Theses and Dissertations

No abstract provided.

Graduate Student - Faculty Mentoring: Does Gender Matter?, Jodi Lynn Hallsten

Theses and Dissertations

Mentoring is an historically popular way to successfully guide a younger person's talents in a given field. The success of a mentoring relationship relies on close and frequent communication between its participants. When communication breaks down between a mentor and protege the relationship cannot fulfill its mentoring function and is rendered ineffective.

Communication literature asserts that women and men are socialized at very young ages into distinct gender specific communities (Tannen, 1990; Tingley, 1993, and Wood 1994). As a result of the different communication styles used by each gender, interactions between women and men often result in misunderstandings. In mentoring …

Sorption Of The Aircraft Deicing Fluid Component Methyl-Benzotriazole In Soil, David L. Kellner

Theses and Dissertations

The air transportation industry requires deicing/anti-icing (ADAF) fluids to maintain flight operations in cold weather conditions. Additives to the ADAF aid in the performance of these agents. Approximately 52M liters of concentrated aircraft deicing fluid are used in North America per year in an attempt to correct this safety problem. Among the additives to ADAF are corrosion inhibitors flame retardants, wetting agents, and thickening agents. Some of these agents are known to be toxic to microorganisms. Identification of the transport processes of these agents in the environment is a necessary first step to understanding how to remediate ADAF. Methyl-Benzotriazole (MeBT) …

A Constructive Induction Approach To Computer Immunology, Kelley J. Cardinale, Hugh M. O'Donnell

Theses and Dissertations

With the increasing birth rate of new viruses and the rise in interconnectivity and interoperability among computers, the burden of detecting and destroying computer viruses is severe. This research integrated four domains: computer virus detection, human immunology, computer immunology and an automated form of machine learning called constructive induction. First, a Computer Health System, based on the public health system, was defined to improve the 'global' approach to computer virus protection. Second, a computer immune model, based on the human immune system, was defined to improve the 'local' approach to virus detection. Third, the detection component of this computer immune …

Simsat: A Satellite System Simulator And Experimental Test Bed For Air Force Research, James E. Colebank, R. Dan Jones, Randall D. Pollak, Donald M. Mannebach, George R. Nagy

Theses and Dissertations

SIMSAT (the SIMulation SATellite) is an AFIT-sponsored program to develop a laboratory-based physical satellite simulator. SIMSAT supports experimentation in areas of attitude control, precision pointing, and vibration suppression. SIMSAT development began with the purchase of a three-axis gas bearing which simulates a torque-free space environment. SIMSAT subsystems provide power, attitude control, telemetry, and structural support to experimental payloads. Project challenges included integration of attitude control software/hardware, high-output power storage devices, remote communications, high-frequency data collection, structural design, and computer display outputs.

Optimization Of A Multilayer Photothermal Sensor For Infrared Spectroscopy, Janine O.J. Wiggins

Theses and Dissertations

Tri-layer thermal diffusion modeling was applied to the optimization of a multi-layer reed sensor for use in a photothermal infrared detector. The multi-layer reed sensor deflects in response to increased temperature. Deflection, of angstroms or larger, is measured using an atomic force microscope. A newly developed thermal diffusion model for three layer reeds was combined with an existing two-layer cantilever model, in order to explore the effects of length, operating frequency, and layer thickness on signal to noise ratio. Model behavior is presented, and compared to laboratory results.

Predicting Launch Pad Winds At The Kennedy Space Center With A Neural Network Model, Steven J. Storch

Theses and Dissertations

This thesis uses neural networks to forecast winds at the Kennedy Space Center and the Cape Canaveral Air Station launch pads. Variables are developed from WINDS tower observations, surface and buoy observations, and an upper-air sounding. From these variables, a smaller set of predictive inputs is chosen using a signal-to-noise variable screening method. A neural network is then trained to forecast launch pad winds from the inputs. The network forecasts are compared to persistence, and peak wind predictions are found skillful compared to persistence. An ensemble modeling technique using Toth's and Kalnay's breeding of growing modes method is explored with …

Structural Emergence And The Collaborative Behavior Of Autonomous Nano-Satellites, Daniel J. Petrovich

Theses and Dissertations

The collaborative behavior of nano-satellites in a zero-gravity environment is explored, and satellite characteristics are proposed that maximize constellation robustness and minimize manufacturing costs. Behavioral algorithms are proposed to facilitate both swarming and structural formation and are validated using the Structural Emergence Simulator (STEMS) Graphical User Interface (GUl). A payload of multiple satellites is placed in a zero-gravity environment and released to re-configure autonomously into a pre-designed structure. Data transmission between satellites is not permitted during the swarming phase of the structure formation mission. A binary behavior algorithm is invented that produces a direction and magnitude solution to the satellite …