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Graduate Theses, Dissertations, and Problem Reports (ETD)

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The Effects Of Cooperative Learning And Traditional Mathematics Instruction In Grades K-12: A Meta-Analysis Of Findings., Norhayati Othman Jan 1996

The Effects Of Cooperative Learning And Traditional Mathematics Instruction In Grades K-12: A Meta-Analysis Of Findings., Norhayati Othman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to analyze the findings of research on teaching mathematics through the use of cooperative learning versus traditional teaching methods on achievement and attitude from grade K through grade 12. Meta-analysis was selected as the method which to synthesize findings and indicate the size and significance of the effects. Studies were collected from 1970 to 1992 using educational sources such as ERIC, DAI and Journal for Research in Mathematics Education. In the final analysis there were 40 studies for achievement and 25 studies in attitude. Effects size was calculated for each study using Glass's (1981) …

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Student Nurses' Lived Experiences As Compassionate Healers To Suffering Patients., Brenda Sue Lohri-Posey Jan 1996

Student Nurses' Lived Experiences As Compassionate Healers To Suffering Patients., Brenda Sue Lohri-Posey

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research study investigated the meanings student nurses were forming in caring for suffering patients. Participants for this study were senior nursing students in a diploma school of nursing for registered nurses in Western Pennsylvania. The study used a phenomenological research design. Fifteen student nurses were interviewed and audiotaped to determine their experiences in providing compassionate healing to suffering patients during their educational experience at the school. The students were also asked to complete a demographic questionnaire and provide a picture of compassionate healing which had meaning for them. The study was conducted in the school of nursing building in …

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The Relationship Between Self-Perceived Educational Philosophy Profile Of Public Community College Presidents And Their Self-Perceived Leadership Style., Frederick Dean Lucas Jan 1996

The Relationship Between Self-Perceived Educational Philosophy Profile Of Public Community College Presidents And Their Self-Perceived Leadership Style., Frederick Dean Lucas

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was designed to examine the relationship between the self-perceived educational philosophy profile of public community college presidents and their self-perceived leadership styles. The population consisted of 209 community college presidents identified by mailing labels from the American Association of Community and Junior Colleges who were serving in public institutions in the United States listed in the AACJC Membership Directory 1993. A proportional, stratified, random sample was conducted of 209 presidents. A cover letter, demographic survey, the Leadership Behavior Description Questionnaire-Self, and Philosophical Instrument were mailed to each subject. Overall, 111 of the presidents responded. Of these, 105 were …

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Soil-Structure-Fluid Interaction By Hybrid Fem-Bem., Chaojin Xu Jan 1996

Soil-Structure-Fluid Interaction By Hybrid Fem-Bem., Chaojin Xu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Soil-structure-fluid systems like U-lock, pipelines, and storage tanks are widely used in engineering practice. Relatively very few works can be found in the literature for the analysis of a soil-structure-fluid system subjected to externally applied loads or seismic excitations. The main purpose of this study is to develop a numerical method for the analysis of a soil-structure-fluid system. In the formulation of the presented numerical method, the flexibility of the thin plate structure is treated with a finite element formulation, while the difficulty in modeling the infinite extent of the soil is overcome by a boundary element formulation. The contained …

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Formation And Structure Of C-8-Oxo/Aryl-Guanine Adducts In Dna., Wai-Ming Yau Jan 1996

Formation And Structure Of C-8-Oxo/Aryl-Guanine Adducts In Dna., Wai-Ming Yau

Graduate Theses, Dissertations, and Problem Reports (ETD)

In biology and medicine, free radicals are now of intense interest because they have been shown to be involved in many different aspects of metabolism, ranging from oxygen consumption and autocatalysis to xenobiotic metabolism. Formation of free radicals in various systems may contribute to diseases and degenerative processes. Free radicals attack guanine in DNA to give 8-substituted guanine derivatives including C-8-oxo-2{dollar}\\sp\\prime{dollar}-deoxyguanosine (oG) and C-8-aryl guanine derivatives via hydroxy and aryl radicals, respectively. The work to be described herein resulted from studies of both adducts in relation to carcinogenesis and other pathogenesis. This dissertation is divided into five chapters. Chapter I …

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Examining Template Switching During Retroviral Reverse Transcription., Ella Harvey Bowman Jan 1996

Examining Template Switching During Retroviral Reverse Transcription., Ella Harvey Bowman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Currently, the Acquired Immune Deficiency Syndrome (AIDS) epidemic is world-wide and threatens the entire human population. The causative agent of AIDS is Human Immunodeficiency Virus (HIV), a retrovirus. The HIV viral population exhibits tremendous variation, making the development of vaccines difficult and anti-viral drug therapy ineffective due to the emergence of drug-resistant HIV strains. The main goal of this dissertation is to better understand how retroviral variation is generated to ultimately aid the development of effective anti-retroviral therapies and vaccines. The experiments described throughout this dissertation incorporate the use of simple retrovirus model systems to study template switching events during …

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Response Time, Process Accuracy And Sequence Accuracy Of Individuals With Specific Learning Disabilities Responding To Auditory And Visual Stimuli., Elizabeth Ann Zicha Jan 1996

Response Time, Process Accuracy And Sequence Accuracy Of Individuals With Specific Learning Disabilities Responding To Auditory And Visual Stimuli., Elizabeth Ann Zicha

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this research was to determine whether specific learning disabled students would respond more quickly, accurately, and in the correct sequence to visual and auditory stimuli according to their predetermined modality preference within the context of the gymnasium and using motor skills. Male and female SLD college students (N = 58) were the participants for the study. Students attending Muskingum College were divided into four groups according to their modality preference toward auditory instruction or visual instruction. Modality preference was determined by the Incomplete Word and Visual Closure subtests of the Woodcock-Johnson Tests of Cognitive Ability. One of …

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Computers, Cooperation, Communication, And Critical Thinking Skills., Laura Priselac Pyzdrowski Jan 1996

Computers, Cooperation, Communication, And Critical Thinking Skills., Laura Priselac Pyzdrowski

Graduate Theses, Dissertations, and Problem Reports (ETD)

The standards-based classroom in this study incorporates the use of the computer as an instructional tool for investigations, cooperative learning in a hands-on computer laboratory environment, and communication in the form of journal entries, team written laboratory reports, and group discourse. This research focuses on the effects of the standards-based classroom on critical thinking skills and mathematics achievement scores and employs both quantitative and qualitative data. Twenty-five students enrolled for a college algebra course at a Mid-Atlantic University served as the subjects for this study. This study used the Watson-Glaser Critical Thinking Skills Assessment. A pretest and posttest of both …

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Repeated Reading Intervention Using Taped Books To Increase Emergent Literacy Skills With Children At-Risk., Laura Anne Reissner Jan 1996

Repeated Reading Intervention Using Taped Books To Increase Emergent Literacy Skills With Children At-Risk., Laura Anne Reissner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Providing children at-risk for reading difficulties with books and video tapes gives children the exposure to print which may be lacking in home and early school experiences. The purpose of this study was to investigate the efficacy of using books on tape to provide print experiences to children at-risk for reading difficulty. Two treatments were provided using books on video and audio tape. Sixty-three children who participated in a kindergarten or first grade Title 1 program in Taylor County, West Virginia were randomly assigned to one of three conditions, books on audio tape, books on video tape, or control group. …

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Modeling And Application Of Thin-Walled Composite Beams In Bending And Torsion., Hani A. Salim Jan 1996

Modeling And Application Of Thin-Walled Composite Beams In Bending And Torsion., Hani A. Salim

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to their favorable properties, pultruded fiber reinforced plastic (FRP) composite beams and columns are increasingly finding their way into infrastructure applications. In order for the structural applications of FRP members to be successful, engineering design analysis procedures are needed to accurately model such advanced materials and systems. Nonclassical effects such as shear lag, shear deformations, warping, torsion, and elastic couplings need to be included in the modeling of FRP composite structural members. In this research, we address the analytical/experimental modeling of thin-walled open and closed composite sections in bending and torsion. Micro/macro-mechanics models are investigated to allow the modeling …

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Nucleation And Growth Studies Relevant To Diamond Thin Film Synthesis., John Michael Lannon Jan 1996

Nucleation And Growth Studies Relevant To Diamond Thin Film Synthesis., John Michael Lannon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Studies of diamond nucleation and growth were conducted with molecular and ionic gas species in an ultra-high vacuum system. Thermal interactions of C{dollar}\\rm\\sb2H\\sb4{dollar} on Si(100) 2 x 1 surfaces held at 1000 K produced carbon films comprised of SiC, sp{dollar}\\sp2{dollar}-C, and sp{dollar}\\sp3{dollar}-C, as determined using Auger electron spectroscopy. The presence of elemental Si on the surface throughout the growth process indicated that a surfactant mediated growth process, with Si as the surfactant, was responsible for both SiC and sp{dollar}\\sp3{dollar}-C growth. The presence of sp{dollar}\\sp2{dollar}-C in the films was most likely due to interfacial strain effects. Medium energy (500 eV) methyl …

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Clinical Assessment And Random Error Reduction Related To The Acoustic Reflection Technique., Jerry Keith Legg Jan 1996

Clinical Assessment And Random Error Reduction Related To The Acoustic Reflection Technique., Jerry Keith Legg

Graduate Theses, Dissertations, and Problem Reports (ETD)

Published research has shown that a simple SCUBA-type mouthpiece may effectively be used in conjunction with an acoustic impedance tube to perform an acoustic reflection test which is thought to well characterize cross-sectional area changes in the larger airways of human subjects. The test, however, has only been performed on the researchers themselves. To test the applicability of the technique in the clinical setting, acoustic testing was conducted on a population of known asthmatic subjects and age-matched controls. It is shown that the SCUBA-type mouthpiece is not appropriate for general population testing. An enhanced mouthpiece is required which both prevents …

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A Neural Network Approach For Implementing A High Dimension Reduction Feature Finder For Automatic Image Matching., Qiang Lin Jan 1996

A Neural Network Approach For Implementing A High Dimension Reduction Feature Finder For Automatic Image Matching., Qiang Lin

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the Counter Propagation Network (CPN) to implement an image feature finder for automatic image matching systems. This research concludes that the CPN paradigm does not appear to be capable of extracting distinctive features for matching complex images such as fingerprints. There are three possible factors explored in the document that contribute to this inability to match. These are: (1) Image Enhancement - Most of fingerprint images have certain levels of localized blur or smear, locally low contrast, or other noise. Currently available image enhancement methods are shown to not suppress these noises effectively. (2) Image Invariance - …

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The Impact Of Activity-Based Costing On Project Bidding., John Edward Mansuy Jan 1996

The Impact Of Activity-Based Costing On Project Bidding., John Edward Mansuy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Applying activity-based costing to project bidding will assist companies make better bid selections, use overtime or subcontracting more effectively, and minimize under/over allocation of overhead costs. Two models, the Overhead Allocation Model and the Bidding Strategies Model, were constructed to explore the implications of activity-based costing on bidding strategies. The Overhead Allocation Model simulates the two step overhead allocation method of activity-based costing. The model, based on user input, assigns cost accounts to overhead cost pools, allocates cost pools to activities using resource cost drivers, calculates a unit cost for each activity cost driver and allocates activities to projects using …

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Regulatory Takings: Lobbying, Coalitions, And Influence., Randolph Rutherford Moffett Jan 1996

Regulatory Takings: Lobbying, Coalitions, And Influence., Randolph Rutherford Moffett

Graduate Theses, Dissertations, and Problem Reports (ETD)

There is a substantial body of literature examining the role of interest groups and their influence in the policy process. What is less clear is the decision-making process of groups in selecting strategies to advance their goals and how the choice of tactics impacts the behavior of other groups within the policy area. This dissertation examines what influences the choice of lobbying strategies in an attempt to understand whether certain types of groups favor particular strategies, how they use the policy process to influence policy decisions, and how successful they are in their choice of strategy. This study examines the …

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Cad For Roll Forming Process., Sankar Rao Nallapati Jan 1996

Cad For Roll Forming Process., Sankar Rao Nallapati

Graduate Theses, Dissertations, and Problem Reports (ETD)

Roll forming is a high production process for forming sheet metal into desired uniform cross-sectional shapes by feeding the metal through successive sets of rotating tools known as form tools. Several parameters, both quantitative and qualitative, ought to be considered while designing roll forming tools, such as section geometry, material properties of the product, number of forming stages, operation sequence, mill parameters and roll profiles. The conventional design methods, however, do not account properly for the interactions between important mechanical and geometrical properties and consequently they may lead to improper flower pattern sequence and roll profiles for the form tools. …

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Cellular Mechanisms In Vascular Smooth Muscle Contributing To The Development Of Salt-Sensitive Hypertension., Scott William Caveney Jan 1996

Cellular Mechanisms In Vascular Smooth Muscle Contributing To The Development Of Salt-Sensitive Hypertension., Scott William Caveney

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this research is to study the cellular mechanisms responsible for the specific supersensitivity to norepinephrine seen in the superior mesenteric vasculature of Dahl salt-sensitive (DS) rats prior to and early in the development of hypertension. It is hypothesized that the vascular smooth muscle of DS rats on a high salt diet for five days or three weeks possess an abnormality at the level of the {dollar}\\alpha\\sb1{dollar}-adrenoceptor or in the transduction process activated after adrenoceptor occupation. The vasoconstrictor response to various agonists was studied in isolated perfused superior mesenteric arterial vasculature from DS rats fed a high salt …

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The Dynamic Ssi Of A Shallow Buried Plate Under Impact Loading., Shen-En Chen Jan 1996

The Dynamic Ssi Of A Shallow Buried Plate Under Impact Loading., Shen-En Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Soil is a particulate material, which provides a unique behavior when interacting with its adjacent structure. The dynamic soil-structure interaction (SSI) phenomenon involving in a shallow-buried flexible plate under impact loading is studied. The objective of this study is to understand this interaction process, which has caused load-relieves on the buried plate. The investigation includes an experimental reproduction of the phenomenon and numerical simulation. Plexiglass plates were used as a buried flexible roof structure, and low-velocity impact loadings were generated into the soil. Measurements of the interaction loads between the sand and the plate, and the accelerations of the buried …

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Multisubstrate Analog Inhibitors Of Glucosamine Synthase As Potential Antifungal Agents., Sridar Venkitakrishnan Chittur Jan 1996

Multisubstrate Analog Inhibitors Of Glucosamine Synthase As Potential Antifungal Agents., Sridar Venkitakrishnan Chittur

Graduate Theses, Dissertations, and Problem Reports (ETD)

Inhibition of the chitin biosynthetic enzyme, glucosamine synthase (EC.2.6.1.16, L-glutamine:D-Fructose-6-phosphate amidotransferase) has been shown to be a promising approach to the development of antifungal agents targeting the cell wall. The best known inhibitors of glucosamine synthase possess epoxy-ketones and {dollar}\\alpha,\\beta{dollar} unsaturated carbonyls. In vivo, these inherently reactive moieties are easily deactivated by nucleophiles like glutathione. Hence we decided to develop inhibitors lacking such highly reactive groups. Development of multisubstrate analogs is a logical approach to inhibition of multisubstrate enzymes. The compounds investigated in our study possess structural modifications of both glutamine and fructose-6-phosphate so as to bind to both binding …

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Analytical Characterization Of Semi-Volatile Organic Material In Coal And Coal-Related Products., Scott William Chervenick Jan 1996

Analytical Characterization Of Semi-Volatile Organic Material In Coal And Coal-Related Products., Scott William Chervenick

Graduate Theses, Dissertations, and Problem Reports (ETD)

The characterization of the semi-volatile organic content of coal and several N-methyl-2-pyrrolidinone (NMP) soluble coal extracts has been investigated using several analytical techniques, including gas chromatography mass spectrometry (GC/MS), Thermal Extraction (TE) GC/MS, Gel Permeation Chromatography (GPC), High Performance Liquid Chromatography (HPLC), Thermabeam LC/MS, Diffuse Reflectance FTIR (DRIFT), and Thermogravimetric (TGA) FTIR. Ultrasonic extraction was shown to be quicker than the traditional Soxhlet extraction technique as the first step in a solvent dissolution scheme for coal. The fractions resulting from the two techniques are similar based on characterization results obtained from HPLC, GPC, and TE-GC/MS experiments. TE-GC/MS was used to …

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Correlation Of In-Facepiece Sampling Methods Using A Simulated Health-Care Workplace Test., Christopher Charles Coffey Jan 1996

Correlation Of In-Facepiece Sampling Methods Using A Simulated Health-Care Workplace Test., Christopher Charles Coffey

Graduate Theses, Dissertations, and Problem Reports (ETD)

For a number of years, it was assumed that the protection measured during a laboratory fit test was indicative of the protection provided by the respirator during actual use in the workplace. Beginning in the early 1980's, workplace protection factor studies were conducted to validate this assumption. These studies indicated that quantitative fit test results did not correlate with actual workplace protection factors. A fit test that indicates the degree of exposure is especially important when Mycobacterium tuberculosis (TB) exposures are involved. This study tested the correlation of fit factors to the subject's actual exposure using biological sampling. Six quantitative …

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Behaviorological Analysis And Evaluation Of Functional Controls Over Verbal Behavior During Persuasive Argument., Barbara Ann Fallon Jan 1996

Behaviorological Analysis And Evaluation Of Functional Controls Over Verbal Behavior During Persuasive Argument., Barbara Ann Fallon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Both academic and business communities are concerned about how the conduct of argument affects decisions made by small groups. While most parties with experience in argument have intuitive ideas about why argument occurs as it does, empirical evidence is seldom available. This multi-subject single-case investigation identifies relations among kinds of statements made during persuasive argument. Argument was conducted during five separate experimental sessions between different pairs of people. The participants in the study were five native English speaking West Virginia University graduate students. The data sets from each argument allowed comparison of intervention effects within and across experimental sessions. Data …

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The Process Of Home-Based Early Intervention: A Case Study Of A Family Educator In An Appalachian Community., Carole Ann Gnatuk Jan 1996

The Process Of Home-Based Early Intervention: A Case Study Of A Family Educator In An Appalachian Community., Carole Ann Gnatuk

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many parents need support and intervention from the community to realize their essential role as their young children's primary teachers. Home visitation is one type of family support program that supplies that need. Although some measurable outcomes for children and parents in such programs have been noted, the dynamics of the action between the catalyst for development, the family educator, and family members cannot be measured quantitatively. Programming and funding decisions can be made with more accuracy if the rich human interactions are systematically narrated and thus appreciated as essential data. The research literature contains few qualitative studies focusing on …

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Visual And Iconographic Design Principles: Implications For Computer-Assisted Instruction., Lindia Lee Gordon Jan 1996

Visual And Iconographic Design Principles: Implications For Computer-Assisted Instruction., Lindia Lee Gordon

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to provide educators and developers of computer-assisted instruction with a validated, concise list of visual and iconographic design principles that should be considered when designing graphical icons to stimulate learning as a part of the user interface of their courseware packages in order to create more effective learning. A panel of 12 experts in a modified Delphi study identified and validated visual and iconographic design principles necessary in the development of icons for CAI. As a result of this study, 37 visual and iconographic design principles were identified and validated. The final conclusions of …

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Development Of Design Criteria For Long-Term Separation, Filtration And Drainage Behavior Of Nonwoven Geotextiles With Fly Ash., Mujahid Hussain Akram Jan 1996

Development Of Design Criteria For Long-Term Separation, Filtration And Drainage Behavior Of Nonwoven Geotextiles With Fly Ash., Mujahid Hussain Akram

Graduate Theses, Dissertations, and Problem Reports (ETD)

The long-term filtration behavior of six nonwoven geotextiles with fly ash from two different power plants was investigated. Five specimen preparation techniques were evaluated: Dry Method, ASTM Method (D 5101-90), Modified ASTM Method, Slurry Method, and Vibro-Prep. ASTM Procedure was modified. Vibro-Prep is a new technique to prepare specimens at higher density to simulate filtration behavior of nonwoven geotextiles in the field. In addition, a method was developed for testing of geotextiles under high hydraulic gradient (HHG). HHG method is an expedient technique to assess the long-term filtration behavior of geotextiles. The results of this investigation indicated that method of …

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Analysis Of Chromosomal Aberrations In Mice Chronically Fed Carcinogens., Alison Erika Director Jan 1996

Analysis Of Chromosomal Aberrations In Mice Chronically Fed Carcinogens., Alison Erika Director

Graduate Theses, Dissertations, and Problem Reports (ETD)

C57BL/6 female mice were used to analyze the effect on chromosomes of chronic ingestion of a single mutagen. Three known carcinogens were analyzed: 2-amino-1-methyl-6-phenylimidazo (4,5-b) pyridine (PhIP), cyclophosphamide (CP) and urethane (ethyl carbamate, EC). Exposures to PhIP were in powdered rodent chow. The endpoints analyzed were chromosome aberrations as measured by chromosome painting for mouse chromosomes 2 and 8, sister chromatid exchanges (SCEs) and micronucleated erythrocytes (MN NCEs). Analysis of peripheral blood lymphocytes and bone marrow by chromosome painting was done at 4 weeks and 16 weeks; no significant increases in the frequency of aberrations were seen. A significant increase …

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Partial Isolation Of The Vitellogenin I Gene And The Characterization Of The Regulation For The Egg Yolk Protein Genes., Robert Stephen Edinger Jan 1996

Partial Isolation Of The Vitellogenin I Gene And The Characterization Of The Regulation For The Egg Yolk Protein Genes., Robert Stephen Edinger

Graduate Theses, Dissertations, and Problem Reports (ETD)

The chicken egg yolk protein genes, vitellogenin (VTG) I, II, III, and the very low density apolipoprotein II (apoVLDLII), are highly expressed in hepatic parenchymal cells in an estrogen-dependent manner. Compared to the other egg yolk protein genes which respond in approximately 2-4 hours after the primary administration of estrogen, the VTGI does not respond for about 20 hours. The mechanism of activation of the egg yolk protein genes is not completely known. Of the VTG genes VTGII and III promoter regions have been isolated and characterized, whereas the promoter region of the VTGI gene has yet to be identified. …

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The Role Of The President At Small Religious Colleges., Mark Alan Smith Jan 1996

The Role Of The President At Small Religious Colleges., Mark Alan Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to compare the perceptions of small religious college presidents and board chairpersons with regard to twenty one selected presidential roles. Presidents and board chairpersons from one hundred and fifty (150) small religious colleges and universities were randomly selected to respond to the Presidential Roles Survey. Usable survey instruments were returned by 91 of the 150 presidents (61%), and 75 of the 150 board chairpersons (50%). These responses came from 100 of the 150 institutions (66%) that were surveyed. This study showed that presidents and board chairpersons of small religious colleges were a very educated …

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An Accurate Navier-Stokes Solver With An Application To Unsteady Flows., Jason Richard Smith Jan 1996

An Accurate Navier-Stokes Solver With An Application To Unsteady Flows., Jason Richard Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Computational fluid dynamics (CFD) is becoming an increasingly important tool for engineering analysis. In CFD simulations obtaining grid independent solutions without excessive cost is desirable. Hence, there is a need to evaluate higher order accurate discretization schemes (both spatial and temporal). Moreover, many journals require at least second-order accuracy for publication. Also, there is a need to maximize the efficiency of Navier-Stokes solvers. Efficiency is both a function of how the flow field is calculated and how effectively the discretized equations are solved. All of these issues are important in the emerging field of Large Eddy Simulation (LES) where very …

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The Use Of Fracture Mechanics To Predict The Stress Distribution In Coal Mine Pillars., James Michael Kramer Jan 1996

The Use Of Fracture Mechanics To Predict The Stress Distribution In Coal Mine Pillars., James Michael Kramer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Because coal resources are dwindling, it is necessary to mine seams that are more difficult to support structurally. The mining industry needs a mine layout that is safe, but designed to be competitive in the world market. Presented in this dissertation is a technique that predicts the stress distribution in coal mine pillars. This approach uses an analytic equation to predict stress and yield characteristics; so, in some respects, it is as accurate as numerical modeling. It uses fracture mechanics to model many structures including longwall gob, yield pillars, cribs, posts, longwall chocks and hydrostatic loads. It models the yield …

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