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Soil-Structure-Fluid Interaction By Hybrid Fem-Bem., Chaojin Xu
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 …
Response Time, Process Accuracy And Sequence Accuracy Of Individuals With Specific Learning Disabilities Responding To Auditory And Visual Stimuli., Elizabeth Ann Zicha
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 …
Computers, Cooperation, Communication, And Critical Thinking Skills., Laura Priselac Pyzdrowski
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 …
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 - …
The Impact Of Activity-Based Costing On Project Bidding., John Edward Mansuy
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 …
Performance Of College Students In An Introduction To Special Education Course With Collaborative Versus Traditional Method Of Instruction., Kevin Joseph Miller
Performance Of College Students In An Introduction To Special Education Course With Collaborative Versus Traditional Method Of Instruction., Kevin Joseph Miller
Graduate Theses, Dissertations, and Problem Reports (ETD)
The use of collaborative small group method of instruction has received considerable attention at the elementary school level. However, little empirical data exists regarding the use of structured collaborative small groups at the college level. This study was designed to compare student performance in a structured collaborative small group method of instruction versus traditional whole class method of instruction. Specifically examined were data on student achievement, student behavior, and student perception collected immediately and one week after experiences within each method of instruction. There were 19 dependent variables in all. Twelve upper level undergraduate and four graduate students participated in …
Cad For Roll Forming Process., Sankar Rao Nallapati
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. …
Development Of Ultrasonic Techniques For Detection Of Internal Defects In Highway Concrete Structures., Allakbar Afshari
Development Of Ultrasonic Techniques For Detection Of Internal Defects In Highway Concrete Structures., Allakbar Afshari
Graduate Theses, Dissertations, and Problem Reports (ETD)
The use of ultrasonic technique for detection of internal flaw and delamination in concrete structures is extremely difficult. In this research all traditional techniques were precisely studied and four new inspection techniques were developed which could be practically applied in testing concrete structures. The developed techniques are: (1) Detached Receiver Through Transmission technique(DRTT); (2) Direct testing of rebars in concrete structures; (3) Semi-Through Transmission Technique(STT); (4) Detached Receiver Pitch-Catch Technique(DRPC). All four of the developed techniques have low signal responses and resolution is critical. The detached receiver techniques have low responses because most of the signal is reflected at the …
Assessing The Impact Of The West Virginia K-12 Ruralnet Project On Teachers' Views., Thomas P. Ditty
Assessing The Impact Of The West Virginia K-12 Ruralnet Project On Teachers' Views., Thomas P. Ditty
Graduate Theses, Dissertations, and Problem Reports (ETD)
Teachers play a key role in implementing curriculum changes in the science classroom. The evaluation of teachers' views regarding the relationships that exist between science, technology, and society can strengthen the link between curricular reforms and the content that students' acquire in their learning experiences and contribute to the improvement of preservice and inservice teacher education programs. The purpose of this investigation was to determine if participation in the West Virginia K-12 RuralNet Project has impacted teachers' views about science, technology, and society interactions. This investigation employed a matched-group quasi-experimental research design which involved 58 West Virginia (K-12) teachers. The …
A Comparative Study Of The Strategies To Maintain Enrollments At Japanese And American Private Institutions Of Higher Education As A Response To Decline In The Population Of Traditional-Age Students., Gregory Alan Snoddy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Japanese higher education institutions obtain 90% of their enrollments from the traditional age student population, yet this population will decrease by 26% between the years 1992 and 2000. With approximately 75% of all Japanese students attending private higher education institutions, there exist the possibility for an adverse impact on the private sector. U.S. institutions have addressed decreasing traditional age student populations by diversifying enrollments to include substantial numbers of non-traditional and part-time participants. The purpose of this study was to investigate the types of strategies being considered or used by Japanese private higher education institutions to maintain enrollments, and to …
A Study Of The Relationship Between Faculty Qualifications And Program Attributes And Student Outcomes In Schools Of Nursing In West Virginia From 1985 To 1994., Barbara Bales Stevens
A Study Of The Relationship Between Faculty Qualifications And Program Attributes And Student Outcomes In Schools Of Nursing In West Virginia From 1985 To 1994., Barbara Bales Stevens
Graduate Theses, Dissertations, and Problem Reports (ETD)
The problem investigated was the low pass rate on the licensing exam for graduates of schools of nursing in West Virginia. The population studied was all West Virginia nursing programs that graduated students who were eligible to take the registered nurse licensing examination between the years of 1985 to 1994. The research method was a descriptive correlational design using data collected from the annual reports submitted to the West Virginia Board of Examiners for Registered Nurses by each nursing program. Sixteen hypotheses were tested to determine the relationship between faculty qualifications and program attributes and the student outcomes of NCLEX-RN …
Nuclear Magnetic Resonance Studies Of Hydrogen-Bonded Solids., Alexander Nikol Klymachyov
Nuclear Magnetic Resonance Studies Of Hydrogen-Bonded Solids., Alexander Nikol Klymachyov
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation focused on two aspects of Nuclear Magnetic Resonance (NMR) techniques in the solid state: (i) the possibility of enhancing the NMR spectral resolution via utilization of single crystals (instead of powders) in the magic angle spinning experiments, and (ii) application of this methodology as a new probe in the studies of the microscopic mechanism of solid-solid phase transitions in hydrogen-bonded solids. The bulk of the studies employed a CMX 360 NMR spectrometer with multinuclear double-resonance probes, operating at 360 MHz for protons, and variable temperatures over the range of {dollar}-{dollar}150 to 250{dollar}\\sp\\circ{dollar}C. The samples investigated were squaric acid …
The Use Of Fracture Mechanics To Predict The Stress Distribution In Coal Mine Pillars., James Michael Kramer
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 …
High School Principals' Perceptions Of Selected Middle School Preferred Practices Applied At High Schools Within West Virginia, Washington, And Indiana: Relationship To Student Dropout Rate, Attendance, Disciplinary Actions, And Academic Achievement., Patrick Jay Tray
Graduate Theses, Dissertations, and Problem Reports (ETD)
Since the early 1970's increasing research has been conducted concerning more effective education of middle school students (Ages 10-14). Over the years a number of preferred practices (19) have been identified which promote a learning environment that more effectively meets the academic, social, and emotional needs of that transitional age as opposed to the more traditional, high school like, practices found within the junior high school setting. It has been concluded by most middle school practitioners and researchers that the more extensive the application of these (19) preferred practices within the Middle School the more improved student performance would be …
A Comparison Of The Performance Of Developmental Students With Regular Students In A College-Level Mathematics Course., Anthony Joseph Vavra
A Comparison Of The Performance Of Developmental Students With Regular Students In A College-Level Mathematics Course., Anthony Joseph Vavra
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to compare the performance of developmental students and regular students in a college-level mathematics course at a comprehensive community college. In this study, students were identified as developmental students if they were required to complete a developmental algebra course. Regular students were those students who were not required to complete this developmental algebra course based on their mathematics section ACT score or their ASSET elementary algebra score. The hypotheses were concerned with identifying any significant differences in the performance of the developmental students as compared to the performance of the regular students in a …
Acoustic Emission Monitoring Of Concrete Structures Using Waveguides., Yidong Eddie He
Acoustic Emission Monitoring Of Concrete Structures Using Waveguides., Yidong Eddie He
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study is to develop acoustic waveguides for Acoustic Emission (A.E.) monitoring of concrete structures, in order to overcome the difficulty of high acoustic attenuation in concrete. Solid embedded waveguides, liquid-filled embedded waveguides and solid surface waveguides have been developed in this study. An analytical model of a waveguide with infinitely thick cladding was used to study the wave propagation in an embedded solid waveguide. The analysis revealed the guideline to construct an ideal embedded waveguide with efficient acoustic transmission, that is the existence of a real wavenumber. An embedded waveguide fulfilling the above criterion has not been constructed physically …
Development Of Cost-Based Multi-Defect-Type Control Chart Using Fuzzy Set Theory., Mustafa Saadeddin Shraim
Development Of Cost-Based Multi-Defect-Type Control Chart Using Fuzzy Set Theory., Mustafa Saadeddin Shraim
Graduate Theses, Dissertations, and Problem Reports (ETD)
Traditional attribute control charts for nonconformities or defects, such as c or u charts, assume that all defect types are binary in nature. However, some defect types have varying degree of seriousness within them. As a result, the plotted value on the control chart may not capture the true quality status of the product in question. Moreover, in many situations, large products may have multiple types of defects. These defects may be different from one another in terms of their severity. The classification process in attribute inspection tasks for the traditional control charts does not consider the variability within some …
Integrated Reliability, Availability, Maintainability Cost Modeling For The Manufacturing System Design/Operation Problem., Yavuz Goktas
Integrated Reliability, Availability, Maintainability Cost Modeling For The Manufacturing System Design/Operation Problem., Yavuz Goktas
Graduate Theses, Dissertations, and Problem Reports (ETD)
The level of production at a manufacturing system is limited by this system availability. Stage or component failures will decrease the available production time which in turn decrease the system throughput rate and increase the production cost. A problem that faces system designers is the need to adopt design and operating policies to enhance system availability economically to achieve their goals. This problem raises two major questions to study: (1) How to go about comparing different design and operating policy alternatives? (2) What kind of criteria should be used to pick a cost-efficient design and operating policy to satisfy the …
Fire Fighters: A Test Of Holland's Theory Of Careers., Brian M. Hershey
Fire Fighters: A Test Of Holland's Theory Of Careers., Brian M. Hershey
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to investigate career and volunteer fire fighters using the vocational concepts of John Holland. The sample consisted of 100 career fire fighters and 100 volunteer fire fighters from a four state region. The instruments that were used in this study were the Vocational Preference Inventory (VPI), the Minnesota Satisfaction Questionnaire (MSQ), and a Demographic Information Form (DIF). The VPI was used to assess the three-letter Holland codes for the subjects; the MSQ was used to assess job satisfaction; the DIF was used to obtain demographic information, self-perceived competence, occupational daydream, career satisfaction, and for …
Even Start Parents' Practices And Views Of Literacy With Preschool-Aged Children., Diane E. Karther
Even Start Parents' Practices And Views Of Literacy With Preschool-Aged Children., Diane E. Karther
Graduate Theses, Dissertations, and Problem Reports (ETD)
The family's influence on children's learning has been well documented in the literature. Early literacy experiences in the home can facilitate children's acquisition of reading and writing skills and impact school achievement. A lowered socioeconomic level and low educational achievement challenge parents' abilities to provide literacy experiences for their children. The purpose of the present study was to examine the literacy practices of families who participated in an Even Start Family Literacy program and to describe parents' views of education and role of teacher of their children. Data for three case families were collected by semi-structured interviews of five parents …
Applicability Of Bispectral Analysis To Unstable Plasma Waves, Renaud Stauber
Applicability Of Bispectral Analysis To Unstable Plasma Waves, Renaud Stauber
Graduate Theses, Dissertations, and Problem Reports (ETD)
A program to implement a spectral analysis technique called the bispectrum was written and tested with computer generated time series data. The application of the algorithm to the study of nonlinear interactions was demonstrated by a comparison of computed quantities with results from model equations found in the literature. Specifically determined were: the amplitude and phase of coupling coefficients, the power transfer function, the fraction of power associated with nonlinear coupling, and the identification of waves involved in a quadratic coupling interaction. A method of distinguishing the two parent waves from the daughter wave in this three-wave interaction is proposed …
Experimental Study On The Hydrodynamics In The Riser Of A Circulating Fluidized Bed., Heping Yang
Experimental Study On The Hydrodynamics In The Riser Of A Circulating Fluidized Bed., Heping Yang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Circulating fluidized bed technology has been widely employed in the energy conversion industry and drawn a considerable amount of research attention to itself. The world-wide research effort on the circulating fluidized bed partially comes from the new emission standards which impose very strict limitations on the coal-powered electrical industry. In the circulating fluidized bed riser, a dilute, upward core in the center region is surrounded by a dense, downward annulus. The solid cluster formation in the annulus near the wall of the riser predominates the flow inside the riser and a transient interface of the core-annulus inside the riser exists. …
A Measurement Of Critical Thinking Dispositions And Skills Of Baccalaureate Nursing Students., Marjorie Mahoney Bower
A Measurement Of Critical Thinking Dispositions And Skills Of Baccalaureate Nursing Students., Marjorie Mahoney Bower
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine if there were differences among freshman, sophomore, junior and senior baccalaureate nursing students in levels of critical thinking dispositions and critical thinking skills as they progress through a nursing curriculum. The effect of the educational experience was evaluated by examining the differences by grade level for the critical thinking dispositions and skills adjusted by significant demographic variables. This study examined the relationships between demographic variables and critical thinking dispositions and skills. Differences in the critical thinking dispositions and skills between selected groups that vary by gender and age were analyzed. The California …
The Effects Of Collaborative Learning On Writing Quality, Writing Apprehension, And Writing Attitude Of College Students In A Developmental English Program., Martha Boger Shrewsbury
The Effects Of Collaborative Learning On Writing Quality, Writing Apprehension, And Writing Attitude Of College Students In A Developmental English Program., Martha Boger Shrewsbury
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined sixteen basic writers in a college developmental English program to ascertain what effect collaborative learning strategies would have on the writing apprehension, writing anxiety, and writing quality. Students operated in a collaborative environment: They followed a writing process and arrived at consensus within their group at each stage of writing. All writers still worried about their writing, but they collectively agreed that they spent more time on writing and rewriting. In short, writers had a vision of what they were expected to accomplish and demonstrated that writing was a powerful tool. This study encourages students and faculty …
Stress Distribution And Failure Mechanism Of Reinforced Concrete Column Subjected To Internal Explosive Charge., Yong-Suk Ro
Stress Distribution And Failure Mechanism Of Reinforced Concrete Column Subjected To Internal Explosive Charge., Yong-Suk Ro
Graduate Theses, Dissertations, and Problem Reports (ETD)
The concept of using explosives to demolish buildings and structures revolutionized the methods to eliminate the unsafe and unwanted structures efficiently and with minimum danger. The idea of demolishing buildings was introduced by CDI (Controlled Demolition Inc., Phoenix, Maryland) during the late 1960s, and the technique has become very popular ever since with numerous blasting agencies and construction companies opting to use explosives over conventional methods of demolition. Though the technique has been used for about a couple of decades, there has not been a unified theory developed to determine the quantity and type of explosive needed to demolish a …
Operating Characteristics And Stability Of Multiple-Fan Ventilation Systems., Shumin Lin
Operating Characteristics And Stability Of Multiple-Fan Ventilation Systems., Shumin Lin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Augmented-system equations related to a subsystem of a multiple-fan ventilation system are established. It has been found that an augmented system has a unique solution curve and all the possible system solution points are located on the curve at the points where the augmented parameter has a zero value. The Quasi-Newton algorithm is then introduced and combined with the switching-parameter technique to form an effective and efficient numerical tool for identifying the solution curve and all the system operation points. Exemplary networks are analyzed using the new algorithm to demonstrate its superiority over all other methods available for analyzing ventilation …
A Phenomenological Study Of The Lived Experience Of Nursing Students Enrolled In An Associate Degree Nursing Program., M Regina Jennette
A Phenomenological Study Of The Lived Experience Of Nursing Students Enrolled In An Associate Degree Nursing Program., M Regina Jennette
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to identify the lived experience of nursing students who made the decision to pursue a nursing career. This study was significant because nursing education is advocating change in the educational process and the student body in nursing today is so diverse. One hundred and sixty (160) first and second year students enrolled in an Associate Degree Nursing Program responded in writing to the research question, "How has the decision to pursue a nursing degree affected you and your life?" The Phenomenological methodology of qualitative research was used to identify and present information collected in …
A Study Of The Effects Of Using A Computer Algebra System In College Algebra., Clyde Preston Campbell
A Study Of The Effects Of Using A Computer Algebra System In College Algebra., Clyde Preston Campbell
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine the effects of using a computer algebra system in College Algebra. This study had a pretest-posttest design where improvement in instruction was measured through increased (1) student achievement, (2) conceptual understanding and (3) attitude score toward mathematics. One instructor taught two control classes (86 students) using the usual classroom instruction with the chalkboard as the only instructional aid. The other instructor taught two experimental classes (89 students) using a computer algebra system (CAS) as a demonstration tool in the lectures. The CAS was also used in a computer laboratory during eight regularly …
Errors In Sampling Particulate Flows With A 10-Mm Dorr-Oliver Cyclone Separator., Krishnendu Kar
Errors In Sampling Particulate Flows With A 10-Mm Dorr-Oliver Cyclone Separator., Krishnendu Kar
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this work, the efficiency of an isolated and mannequin-mounted 10mm Dorr-Oliver nylon cyclone as a particle preclassifier for respirable dust sampling was experimentally determined relative to an isokinetic sampler (sampling efficiency) and an inlet simulator sampler (penetration). A TSI Aerodynamic Particle Sizer (APS 3310) and a Marple six-stage impactor at different stream velocities (1.52 m/s, 2.43 m/s, 4.15 m/s), sampling flow rates (2.0 lpm, 1.7 lpm, 1.2 lpm) and inlet orientations {dollar}(0\\sp\\circ,\\ 90\\sp\\circ,\\ 180\\sp\\circ{dollar}) relative to the free stream was used. The Sigmoid curve has been found to represent the efficiency (penetration and sampling efficiency) of the cyclone fairly …
Three-Dimensional Color: Development Of A Machine Vision Colorimeter., William K. Preece
Three-Dimensional Color: Development Of A Machine Vision Colorimeter., William K. Preece
Graduate Theses, Dissertations, and Problem Reports (ETD)
This document proposes a patent pending process, called 3D COLOR, to measure color and appearance of three-dimensional (3D), non-specifically oriented objects with a 24 bit color machine vision system. The core technology of 3D COLOR encompasses image correction and shading correction. A methodology is developed and implemented for improving image fidelity by calibrating and removing camera, illumination, and optical influences from the image. Techniques for removing the shape induced shading from the image data of a three-dimensional object are explored. This facilitates large region analysis of color and appearance for finished products and on-line color monitoring for nonplanar web processes …