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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Programming Wizards: Generating Syntax-Free Conceptual Editors., Windell Hansford Goff Ii Jan 1999

Programming Wizards: Generating Syntax-Free Conceptual Editors., Windell Hansford Goff Ii

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this project is to develop a generator for a class of syntax-free conceptual editors called "programming wizards". These editors provide a model of software that is especially suitable for novice software developers, freeing them from intricate syntactic details. The effectiveness of these editors is demonstrated by showing how they ease learning of component-based software engineering principles in introductory computer science classrooms. The notion of programming wizard generation is expected to be generally applicable for teaching other principles without the intrusiveness of particular specification / programming syntax.

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Acoustic Signal During Hydraulic Fracturing., Jeremy Scott King Jan 1999

Acoustic Signal During Hydraulic Fracturing., Jeremy Scott King

Graduate Theses, Dissertations, and Problem Reports (ETD)

Well performance analysis using pressure/time data are historically collected over a time span of minutes and hours. Such pressure/time performance is controlled by Darcy type fluid seepage, and used to define the formation boundaries and permeability. A different pressure transient is used to determine the acoustic characteristics of the open flow passages of a well. A pressure transient can be induced by a sudden change in flow rate. The wave travels towards the casing perforations and back to the surface. The reflected signal contains the piping and fracture acoustic signature within it. The transient signal lasts less than a minute. …

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The Fernow Experimental Forest: An Analysis Of Historical Change., Jennifer Ann Mccullough Jan 1999

The Fernow Experimental Forest: An Analysis Of Historical Change., Jennifer Ann Mccullough

Graduate Theses, Dissertations, and Problem Reports (ETD)

Three sets of aerial photographs were employed to assess the historical changes within the US Forest Service (USFS) Fernow Experimental Forest in Parsons, West Virginia. The Fernow Experimental Forest was almost entirely clear-cut in the early part of the 20th century prior to its establishment in the 1930s. The USFS photographs acquired in 1956/58, 1972, and 1985 were the main source of data. The photographs were stereoscopically interpreted to identify mature forest, as well as selective cutting, clear-cutting, and areas that were regenerating following logging. The logging classes included areas of selective cutting, clear-cutting, and areas that were regenerating from …

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A Model For World Wide Web-Based Asynchronous Laboratory Learning In Engineering Education., Prashanth Kumar Salur Jan 1999

A Model For World Wide Web-Based Asynchronous Laboratory Learning In Engineering Education., Prashanth Kumar Salur

Graduate Theses, Dissertations, and Problem Reports (ETD)

World Wide Web based Asynchronous Learning, a new concept in distance learning is gaining large scale acceptance among a number of universities and has become a basis for project work in various universities, colleges and even business enterprises. Asynchronous means that participants in a discussion need not engage in that discussion at the same time, a method to achieve high degree of interactivity among geographically separated learners independent of time or place. This project aims to develop such an Asynchronous Learning environment for laboratory learning containing interactive exercises with simulation experiences. Interactive exercises have been developed with multiple-choice questions and …

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Texpert: Expert System For Evaluating Product Design For Worker's Safety And Health., Vikram V. Venneti Jan 1999

Texpert: Expert System For Evaluating Product Design For Worker's Safety And Health., Vikram V. Venneti

Graduate Theses, Dissertations, and Problem Reports (ETD)

Today, there is an increasing emphasis on the safety and health of a worker. Optimum resources are invested to ensure worker's safety. Most of the regulations, and other measures as suggested by NIOSH, OSHA and other leading safety organizations concentrate towards the steps that a worker needs to take to use a product safely. Instead, if the product itself is designed to be safe, and if the manufacturer of the product knows about the product's safety before usage, it would reduce a great deal of wastage of resources. This research is an attempt to implement the above ideology. The objective …

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Development Of Expert Systems In Heating, Ventilating And Air-Conditioning (Hvac): An Energy Approach., Raghavendra Srinivas Chillarige Jan 1999

Development Of Expert Systems In Heating, Ventilating And Air-Conditioning (Hvac): An Energy Approach., Raghavendra Srinivas Chillarige

Graduate Theses, Dissertations, and Problem Reports (ETD)

The recent rapid escalation of fuel costs, the instability of supplies and predicted future limitations have focussed attention on the need for a complete “re-think” on fuel and energy usage, with particular emphasis on energy conservation. Heating, Ventilation and Air-Conditioning systems are the major energy consuming equipment in any industry after the Process equipment. The design and use of HVAC systems is therefore an important decision making step in Industry. The Evaluation of heat recovery, the estimation of heating and cooling loads form the basis for using available energy efficiently. The estimation of space loads is vital for the sizing …

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An Analysis Of Science- And Technology-Related Health Assistance Provided To Lesser Developed Nations From 1985 To 1995., Robin C. Spitznogle Jan 1999

An Analysis Of Science- And Technology-Related Health Assistance Provided To Lesser Developed Nations From 1985 To 1995., Robin C. Spitznogle

Graduate Theses, Dissertations, and Problem Reports (ETD)

The problem of this research was to analyze science- and technology-related health assistance provided to Third World nations between 1985 and 1995 by four donor agencies: Ford and Rockefeller Foundations, USAID, and World Bank. The research examined health assistance in terms of (1) the number and value of projects by region, sub-region, and country; (2) the amount of assistance provided by individual donor agencies; (3) the types of projects initiated; and (4) the impact that these projects had on 8 health-related and 1 economic-related indicator in selected countries. A total of 610 health projects, valued at $1.6 billion, were identified. …

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Microstructure And Electron Emission Characterization Of The Initial Stages Of Diamond Growth On Silicon(100)., Vikram Lilo Tolani Jan 1999

Microstructure And Electron Emission Characterization Of The Initial Stages Of Diamond Growth On Silicon(100)., Vikram Lilo Tolani

Graduate Theses, Dissertations, and Problem Reports (ETD)

Atomic force and scanning tunneling microscopes have been used to characterize the microstructure and electron emission properties of diamond films grown on Si(100). In particular, we have focussed on the evolution of these film characteristics as diamond and SiC nucleate on Si(100) at 800°C by reaction with C2H4 gas under 5x10-5torr pressure. Under these conditions, there is possibly a brief period of 2-D layer-by-layer growth, but there is a tendency for the film to rapidly convert to a 3-D growth mode marked by the persistence of small primary nuclei ~400-600Å wide and ~5-6 lattice steps high. The in-air electron emission …

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The Ecg Signal Processing By Adsp-21062 Digital Signal Processor., Limin Wang Jan 1999

The Ecg Signal Processing By Adsp-21062 Digital Signal Processor., Limin Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

About 350,000 people die each year due to sudden cardiac death. The use of the Implantable Cardioverter / Defibrillator (ICD) makes it possible for an emergency defibrillation system to be always available to those patients that in high risk of sudden cardiac death. For this kind of technique, real-time detection and identification of arrhythmia automatically is important. Detection of arrhythmia usually involves complex algorithmic calculations, reducing the ability to provide immediate therapy. In this project, Analog Device’s ADSP-21062 digital signal processor is introduced as a candidate for the main processor of ICD. Cross-correlation, a method for detecting arrhythmias, is used …

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Acoustic Properties Of A Two-Dimensional Fracture During Formation., Erika Echavarria Jan 1999

Acoustic Properties Of A Two-Dimensional Fracture During Formation., Erika Echavarria

Graduate Theses, Dissertations, and Problem Reports (ETD)

Hydraulic fractures are created to increase the productivity of oil and gas wells. The extent of improvement depends on the formation permeability, fracture conductivity and the fracture geometry, specifically the fracture length. The cost of fracturing is directly proportional to the volume pumped and the rate of pumping, respectively depending on the amount of proppant and horsepower available. In the design of a well fracturing job, many critical decisions have to be made, related to the desired length, width and height of the fractures to be created. The design specifies the type of fluids pumped and the pumping rate schedule. …

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Neural Networks For Control Signal Reconstruction In Non-Linear Systems With An Application To Aircraft Dynamics., Stelios Pantelis Pispitsos Jan 1999

Neural Networks For Control Signal Reconstruction In Non-Linear Systems With An Application To Aircraft Dynamics., Stelios Pantelis Pispitsos

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, general, commercial and military aviation has been plagued by the occurrence of several crashes, in which faulty control surfaces appeared to be the cause, or one of the possible causes. Typically, the National Transportation and Safety Board (NTSB) begins its investigation by analyzing the wreckage along with the flight data recorder (FDR) and cockpit voice recorder (CVR). In most instances this combination of information is enough for the NTSB to discover the cause of the crash, but unfortunately this is not always the case. From this the argument can be made that there is a need for …

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Evaluation Of Biocidal Polymers For The Treatment Of Domestic Water Supplies: Application Of Polymers To The Surface Of Carrier Particles., Robert Matthew Taylor Jan 1999

Evaluation Of Biocidal Polymers For The Treatment Of Domestic Water Supplies: Application Of Polymers To The Surface Of Carrier Particles., Robert Matthew Taylor

Graduate Theses, Dissertations, and Problem Reports (ETD)

The performance of N-Halamine polymers in eliminating bacteria from water streams was studied in this research. Numerous experiments were performed to determine the efficacy of both pure N-Halamine polymer and polymer coated on carrier particles to remove Escherichia coli from water streams. The results for this research were inconclusive for a number of reasons. First, the polymer used in this research was not active. It lacked the correct chemical structure to kill bacteria effectively. Additionally, when active polymer was received, insufficient quantities were available to produce viable coated carrier particles. The ability to regenerate the polymer using bleach solutions could …

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The Application Of Finite Difference Method And Matlab In Engineering Plates., Bohe Wang Jan 1999

The Application Of Finite Difference Method And Matlab In Engineering Plates., Bohe Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

The biharmonic equation is used to model the deflections arising in two dimensional rectangular orthotropic symmetric laminate plates. The plate can be subjected to external perpendicular forces and one is interested in the resulting deflections. Various boundary conditions can be applied to the problem. The edges can be simply supported, clamped, or free. In this work, an automatic procedure is defined which produces the difference equations for each edge boundary case. The procedure is illustrated, using MATLAB, with numerical results for problems with and without exact analytical solutions.

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Photoluminescence Investigation Of Compensation In Nitrogen Doped Zinc Selenide., Monica Moldovan Jan 1999

Photoluminescence Investigation Of Compensation In Nitrogen Doped Zinc Selenide., Monica Moldovan

Graduate Theses, Dissertations, and Problem Reports (ETD)

A detailed liquid-helium-temperature photoluminescence study has been performed on a series of ZnSe epilayers grown by molecular beam epitaxy. The samples were grown at West Virginia University and include undoped and nitrogen-doped epilayers (with different levels of doping). The PL has been studied as a function of excitation wavelength, power, temperature and time. Electron Paramagnetic Resonance (EPR) and Photoluminescence Excitation (PLE) were also performed. An ionization energy of 50 meV for the “deep” donor in a lightly doped ZnSe:N sample is determined using power dependence data. Heavily nitrogen-doped samples (≥8 x 1018 cm−3 ) provided evidence for a second deeper …

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Studies Of Far From Equilibrium Condensed Matter Systems: Euler Buckling Instability And Molecular Beam Epitaxy., Dorel I. Moldovan Jan 1999

Studies Of Far From Equilibrium Condensed Matter Systems: Euler Buckling Instability And Molecular Beam Epitaxy., Dorel I. Moldovan

Graduate Theses, Dissertations, and Problem Reports (ETD)

We use numerical modeling and scaling theory methods to investigate the time evolution of three types of condensed matter systems far from equilibrium. We study buckling instability of flexible chains of molecules, buckling instability of tethered membranes and Molecular Beam Epitaxy (MBE) Growth Model. We find that the buckling of the flexible chain is similar to coarsening phenomena such as the spinodal decomposition. Evolving chain profile is like a wave with a wavelength λ(t) that grows, via coarsening, as a power of time. The evolving chain is like a rough object with transversal roughness w(t) growing as a power of …

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The Connection Between The Current Penetration-Based National Ambient Air Quality Standard And Dose Can Be Considered Questionable., Michael T. Berakis Jan 1999

The Connection Between The Current Penetration-Based National Ambient Air Quality Standard And Dose Can Be Considered Questionable., Michael T. Berakis

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research examined the bias between penetration (as PM2.5) and deposition (as deposited submicrometer particulate DSP) due to the variability of ambient air particle size distributions. A size mobility particle analyzer and portable dust monitor were used to measure count and mass data at three locations in Morgantown West Virginia It was found that over 50% of the median diameters are less than 1µm. A correlation between deposition and penetration was found even though the PM 2.5 criterion is not a good indication of dose. This was due to a lack of variability in the measured distributions. Further research is …

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Backcalculation Of Pavement Layers Moduli Using Three-Dimensional Nonlinear Explicit Finite Element Analysis., Gergis W. William Jan 1999

Backcalculation Of Pavement Layers Moduli Using Three-Dimensional Nonlinear Explicit Finite Element Analysis., Gergis W. William

Graduate Theses, Dissertations, and Problem Reports (ETD)

After reviewing the existing literature on FWD testing and backcalculation algorithms, a new backcalculation approach based on Three Dimensional Finite Element Modeling (3D FEM) was developed. This approach accounts for the transient dynamic nature of FWD load, the three dimensional geometry of the pavement structure, and the friction and bonding characteristics of pavement layers interfaces. The 3D FEM backcalculation approach was used to backcalculate the layers moduli of flexible, rigid, and composite pavement sites located in West Virginia. The layers moduli of each site were also evaluated using three widely used backcalculation algorithms: MODULUS, EVERCALC, and MODCOMP. Comparison of their …

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Uneven Development Of Nature: An Historical Geography Of Ohiopyle State Park., Richard James Hoch Jan 1999

Uneven Development Of Nature: An Historical Geography Of Ohiopyle State Park., Richard James Hoch

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis examines the use of nature in the uneven development of Ohiopyle State Park, located sixty miles to the southeast of Pittsburgh, Pennsylvania. The production of this park resulted from a complex system of socio-spatial relationships that existed between Ohiopyle and Pittsburgh during the city's industrialization. The thesis has two objectives: (1) to demonstrate that the park is a space of produced nature, resulting from decades of human activity; and (2) to illustrate the various ways in which the production of this park is an extension of the production of the Pittsburgh industrial space. The thesis addresses these objectives …

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"They Don't Throw, They Turn; They Don't Fire, They Burn": Place And Identity In Seagrove, North Carolina., Li-Ting Hung Jan 1999

"They Don't Throw, They Turn; They Don't Fire, They Burn": Place And Identity In Seagrove, North Carolina., Li-Ting Hung

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent Scholarship in geography explores the cultural identity of place by analyzing literature, music and art, but few scholars have studied pottery art, one of the oldest forms of art making. This study of Seagrove, a small central North Carolina town with a long tradition of locally produced pottery, examines the way place identity develops, is presented, takes multiple forms, and is contested through pottery art. Further, it explores the concept of institutionalized place identity by analyzing the impact of a new Pottery Center and Museum in this town. The research has carried out by means of open-ended interviews with …

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Using Conventional Wireline Logs To Generate Magnetic Resonance Imaging (Mri) Logs: A Feasibility Study., Mark Robert Richardson Jan 1999

Using Conventional Wireline Logs To Generate Magnetic Resonance Imaging (Mri) Logs: A Feasibility Study., Mark Robert Richardson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Magnetic Resonance Imaging (MRI) is used in logging to provide the log analyst an additional tool in establishing reservoir characteristics. Magnetic Resonance Imaging Logging (MRIL) provides information on the Free Fluid, Irreducible Fluid, Total Porosity, Effective Porosity, and Permeability that is far more accurate than Conventional Wireline Log interpretation, enabling better completion practices that will further enhance total recovery. What this feasibility study seeks to show is that by using Neural Networks, it is possible to generate synthetic MRI Logs using conventional Wireline Log data. This study also demonstrates that this practice is possible in different reservoirs having entirely different …

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Does Culture Translate: Can We Make The Words Our Own?, Kathleen C. Gallivan Jan 1999

Does Culture Translate: Can We Make The Words Our Own?, Kathleen C. Gallivan

Graduate Theses, Dissertations, and Problem Reports (ETD)

A collaborative effort between the Departments of Theatre and Foreign Languages, the study, using ethnographic techniques, documents the process of developing cultural awareness of a young group of actors as they rehearsed a post Spanish Civil War play. Analysis of data collected over five weeks through interviews, a demographic questionnaire, and observations by both the thesis director and the researcher reveal that with motivation and a little guidance students will connect, and further, understand another culture. These findings are significant since the use of theatre in this fashion offers a means to motivate students and peak interest in target culture, …

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Wvu: Interactive Web-Based Distance Learning Tool., Naga Raju Bussa Jan 1999

Wvu: Interactive Web-Based Distance Learning Tool., Naga Raju Bussa

Graduate Theses, Dissertations, and Problem Reports (ETD)

Learning is a process of integrating the new and unfamiliar with the complex, pre-existing structure of knowledge that exists within an individual’s mind. Education, which takes place while the educator and learner are separated by time, distance, or both, is defined as Distance Education. The demand for educational software is growing exponentially with the surge of interest in educational reform, the Internet and Distance Education. The use of Internet and specifically the World Wide Web (Web) as a media for distance education is an evolving solution to the problem of increasing numbers of students in the University setting. To meet …

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The Relative Efficacy Of Computer Assisted Instruction., Dane Edward Huxford Jan 1999

The Relative Efficacy Of Computer Assisted Instruction., Dane Edward Huxford

Graduate Theses, Dissertations, and Problem Reports (ETD)

This manuscript examines the relative efficacy of computer assisted instruction (CAI). A review of literature is examined with regard to the positive and negative aspects of the use of CAI in the university classroom. An experimental design was outlined incorporating the use of 3 teachers instructing 3 separate sections of volunteer students on a topic. The design measured the differences between affective learning, cognitive learning and student perceptions of teacher nonverbal immediacy. Participants were randomly assigned to a class, which utilized either: lecture, handout or the use of CAI. Results showed significant differences between teachers and a slight difference in …

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The Effects Of An Internet Skill-Building Module On Safety And Environmental Graduate Students' Internet Anxiety, Likelihood To Use The Internet, And Learning Internet/Intranet Content., David A. Ealy Jan 1999

The Effects Of An Internet Skill-Building Module On Safety And Environmental Graduate Students' Internet Anxiety, Likelihood To Use The Internet, And Learning Internet/Intranet Content., David A. Ealy

Graduate Theses, Dissertations, and Problem Reports (ETD)

The use of technology in training has grown a great deal over the past five years, and the tools have improved which has produced several changes in the way training is being designed and delivered. These delivery methods include the Internet, and electronic performance support systems. Today's trainers must possess a different set of skills needed to perform in an increasingly technological environment. At the present time, little research is available on the effects of Internet anxiety, and most of the related research revolves around computer anxiety. The study was designed to examine the effects of an Internet Skill-Building Module …

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A Qualitative Study Of Five West Virginia K-12 Ruralnet Project Teachers Merging The Internet Into Their Instruction And How The Internet Affects Professional Practice., David A. Falvo Jan 1999

A Qualitative Study Of Five West Virginia K-12 Ruralnet Project Teachers Merging The Internet Into Their Instruction And How The Internet Affects Professional Practice., David A. Falvo

Graduate Theses, Dissertations, and Problem Reports (ETD)

This qualitative study explores the day-to-day classroom work of five West Virginia K–12 RuralNet Project teachers, highlighting the drama of integrating technology into learning and showing how these teachers build and refine relationships to foster their sense of professionalism, through the use of technology. This study shows how teachers use the Internet as an instructional resource and as a tool for connecting to other people within and outside of the learning community. The participants of this study began to learn new technology skills during the summer of 1995. Today, they are integrating Internet technology into their daily teaching and planning …

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A Distributed-Memory Implementation Of Kiva-3 With Refinements For Large Eddy Simulation., Aytekin Gel Jan 1999

A Distributed-Memory Implementation Of Kiva-3 With Refinements For Large Eddy Simulation., Aytekin Gel

Graduate Theses, Dissertations, and Problem Reports (ETD)

In spite of the tremendous advancement of computer technology within the last decade, today's grand challenge problems are still beyond the numerical simulation capability of the most state-of-the-art hardware. Fluid dynamics problems involving the prediction capability for turbulent flows represent one example for such situations. Large eddy simulation (LES) is a viable alternative to direct numerical simulation (DNS) of turbulent flows due to the fact that certain portion of the detailed small-scale information resolved in DNS is suppressed in LES technique in order to make the computational problem more tractable. However, even with LES, today's challenging problems require accurate schemes …

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An Assessment Of Organizational Effectiveness: A Study Of West Virginia Watershed Associations., Sarah A. Cline Jan 1999

An Assessment Of Organizational Effectiveness: A Study Of West Virginia Watershed Associations., Sarah A. Cline

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recently, federal and state government agencies have advocated a watershed approach to deal with water pollution issues. This approach addresses water quality and use on a watershed level and advocates public participation in watershed protection issues. In many communities, watershed associations have formed as an avenue for public involvement in a watershed approach. This thesis examines factors impacting watershed association effectiveness in reaching their intermediate goals (activities conducted and financial resources obtained for watershed protection) to achieve their final outcomes. Factors effecting the formation of watershed associations are also examined. Both analyses are conducted at the watershed level using the …

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An Analysis Of The Trends In Energy Conservation Studies Of The Iac Program., Nithya Sundararajan Jan 1999

An Analysis Of The Trends In Energy Conservation Studies Of The Iac Program., Nithya Sundararajan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Small and medium-sized manufacturing plants (those with fewer than 500 employees) represent more than 98 percent of the more than 374,000 establishments in the U.S. manufacturing industry, 64 percent of employees in the total manufacturing labor force, and more than 42 percent of total manufacturing energy consumption. In 1976 the federal government started funding industrial energy audits for small and medium sized manufacturing firms under the auspices of the Industrial Assessment Centers (IAC) that are spread throughout the U.S. The data collected from the hundreds of energy audits that are conducted each year is collected in a database maintained by …

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An Experimental And Computational Investigation Of Microwave Regeneration Of Diesel Particulate Traps., Sriram S. Popuri Jan 1999

An Experimental And Computational Investigation Of Microwave Regeneration Of Diesel Particulate Traps., Sriram S. Popuri

Graduate Theses, Dissertations, and Problem Reports (ETD)

As the number and power ratings of diesel engines in both on-road and off-road applications are increasing, concern over the health effects of the exhaust emissions, especially diesel particulate matter (DPM) is becoming more significant. One of the most effective exhaust after-treatment methods is to use ceramic traps to control DPM emissions. Periodic cleaning of traps (regeneration) is essential as the flow resistance progressively increases during filtration of DPM. However, the existing regeneration technologies for ceramic particulate traps are uneconomical and/or cause structural damage to the ceramic trap element. Microwave energy offers the advantage of selectively heating only the DPM, …

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Durability Of Fiber-Reinforced Composite Wrap System For The Rehabilitation Of Concrete Structures, Sachin Kshirsagar Dec 1998

Durability Of Fiber-Reinforced Composite Wrap System For The Rehabilitation Of Concrete Structures, Sachin Kshirsagar

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research was the investigation of the durability of composite materials employed for rehabilitation of concrete bridge piers. Standard concrete cylinders (4&inches; x 8&inches; in dimensions) wrapped with 1 layer of glass fabric embedded in an epoxy resin matrix were used to simulate the field situation. Wet lay-up method was used to wrap the concrete cylinders where the epoxy also served the purpose of bonding the composite to the concrete. Specimens were subjected to six different accelerated aging conditions: (i) pH 9.4, 73°F; (ii) pH 12.4, 73°F; (iii) pH 12.4, 150°F; (iv) pH 7.0, 150°F; (v) Dry …

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