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2000

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Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy Dec 2000

Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was the detailed examination of a Planetary Combination Hybrid Electric Vehicle design (PC-Hybrid). The PC-Hybrid unites all the advantages of the existing hybrid electric vehicle powertrain concepts, such as series, parallel and combination, while eliminating the disadvantages of each.;The PC-Hybrid powertrain is built up of an internal combustion engine, and two electric motor/alternators connected together via a planetary gear set. Several different powertrain configuration layouts were investigated as possible setups of the PC-Hybrid and the two most promising ones were chosen for further investigation and simulation. A control strategy has been developed for the optimal …

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Exploring Visitor Meanings Of Place In The National Capital Parks - Central, Wei-Li Jasmine Chen Dec 2000

Exploring Visitor Meanings Of Place In The National Capital Parks - Central, Wei-Li Jasmine Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study uses a new approach to interpretative research based on (1) understanding the meanings visitors attach to park resources, and (2) examining the connections that visitors made after attending an on-site interpretive program. The study was conducted at the National Capital Parks in Washington, DC. This study revealed that many visitors to the Lincoln Memorial, the Vietnam Veterans Memorial, and the Korean War Veterans Memorial (i.e. the Triangle) seek something of value for themselves, including everything from connecting with the past and rededicating themselves to the ideals of the nation. The study incorporated mixed method design, including purposeful sampling …

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Optimization Of A Helicon Plasma Source For Maximum Density With Minimal Ion Heating, Matthew M. Balkey Dec 2000

Optimization Of A Helicon Plasma Source For Maximum Density With Minimal Ion Heating, Matthew M. Balkey

Graduate Theses, Dissertations, and Problem Reports (ETD)

Measurements of electron density and perpendicular ion temperatures in an argon helicon plasma are presented for five different antennas: A Nagoya type III antenna, a double-saddle antenna, a 19 cm long m = +1 helical antenna, a 30 cm long m = +1 helical antenna and a 19 cm m = +1 helical antenna with wide straps. Electromagnetic wave measurements in the range from 100 kHz to 50 MHz are also presented for a wide range of plasma parameters. The data show a clear transition between RF power coupling to the plasma to create density and coupling to heat ions. …

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Evaluating Mandatory Parent Education For Divorcing Couples With Children, Brian John Krolczyk Dec 2000

Evaluating Mandatory Parent Education For Divorcing Couples With Children, Brian John Krolczyk

Graduate Theses, Dissertations, and Problem Reports (ETD)

Court-mandated parent education for divorcing parents with children has become a standard practice in recent years. The West Virginia State Legislature voted to mandate parent education programs in all of West Virginia effective January, 2000. Research suggests parental conflict is a major factor contributing to adjustment difficulties reported by children. Generally, parent education programs for divorcing couples with children focus on adjustment issues for parents and children as they navigate a demanding period of family change. A literature review of current parent education programs in the United States revealed programs differ in teaching methods used and curriculum. It is reported …

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Psychophysiological Responses Of Older Adults To An Anxiety -Evoking Stimulus, Angela W. Lau Dec 2000

Psychophysiological Responses Of Older Adults To An Anxiety -Evoking Stimulus, Angela W. Lau

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to clarify the relation between anxiety and physiological responses in older adults as compared to younger adults. Heart rate (HR), skin conductance level (SCL), skin conductance response (SCR), systolic blood pressure (SBP), and diastolic blood pressure (DBP) were obtained before, during, and after exposure to a Stroop color-word naming task and a snake video from 46 female younger adults (age 18--30) and 28 female older adults (age 65--80) who were designated as either snake fearful or snake nonfearful. No significant group differences were observed on physiological measures to baseline one or during the snake …

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Coupled Nonlinear Dynamical Systems, Hongyan Sun Dec 2000

Coupled Nonlinear Dynamical Systems, Hongyan Sun

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this dissertation, we study coupled nonlinear dynamical systems that exhibit new types of complex behavior. We numerically and analytically examine a variety of dynamical models, ranging from systems of ordinary differential equations (ODE) with novel elements of feedback to systems of partial differential equations (PDE) that model chemical pattern formation. Chaos, dynamical uncertainty, synchronization, and spatiotemporal pattern formation constitute the primary topics of the dissertation. Following the introduction in Chapter 1, we study chaos and dynamical uncertainty in Chapter 2 with coupled Lorenz systems and demonstrate the existence of extreme complexity in high-dimensional ODE systems. In Chapter 3, we …

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Burnout, Stress And Social Support Among Doctoral Students In Psychology, Kelli Lee Weaver Dec 2000

Burnout, Stress And Social Support Among Doctoral Students In Psychology, Kelli Lee Weaver

Graduate Theses, Dissertations, and Problem Reports (ETD)

The relationships between burnout, stress, and social support have been evaluated across a number of populations within the helping professions. However, no published studies have addressed the relationships between the aforementioned variables among doctoral students in psychology. As a result, the current study attempted to expand knowledge of the relationships between burnout, stress, and social support specifically among Clinical, Counseling, and School Psychology doctoral students. Results suggested that Clinical, Counseling, and School Psychology doctoral students are generally similar in their reports of burnout, stress, and social support. However, several differences were observed between the groups, and these differences are reported. …

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On The Feasibility Of Integrated Optical Waveguide-Based In Situ Monitoring Of Microelectromechanical Systems (Mems), Kolin Shay Brown Dec 2000

On The Feasibility Of Integrated Optical Waveguide-Based In Situ Monitoring Of Microelectromechanical Systems (Mems), Kolin Shay Brown

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the feasibility of using integrated optical waveguides to measure the motion of microelectromechanical structures (MEMS). MEMS are a class of silicon devices which are being developed as sensors and actuators. Because these free moving structures are fabricated using processes similar to microfabrication, MEMS devices and traditional electronics can be integrated on the same substrate. This merging of the technologies will allow the miniaturization of large scale mechanical systems. A difficulty with MEMS devices is determining the submicron motion. One method of noninvasive measurement is optical measurement. Research focused on the characterization of one particular MEMS device, a …

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Characterization Of A Novel Methyl Radical Source And Related Thin Film Growth Studies, Jeffrey Stephen Gold Dec 2000

Characterization Of A Novel Methyl Radical Source And Related Thin Film Growth Studies, Jeffrey Stephen Gold

Graduate Theses, Dissertations, and Problem Reports (ETD)

An ultrahigh vacuum compatible methyl (CH3) radical source has been developed. The methyl radicals were generated by dc- and microwave-discharge processes in either of two ways. In the first, argon (Ar) or an Ar/Xe mixture was passed through the discharge to produce inert gas metastables that react with methane to produce the desired species. This was referred to as the indirect mode of operation. In the second or direct mode, an inert gas/methane mixture was passed directly through the discharge. The discharge/reaction products were sampled using a skimmer, and the resulting molecular beam was either characterized using a mass spectrometer …

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Design, Construction, And Evaluation Of Coal Extraction Pilot Plant To Manufacture Coal-Based Carbon Pitch, Brian Wayne Bland Dec 2000

Design, Construction, And Evaluation Of Coal Extraction Pilot Plant To Manufacture Coal-Based Carbon Pitch, Brian Wayne Bland

Graduate Theses, Dissertations, and Problem Reports (ETD)

A solvent extraction technique for removing mineral matter, including the inorganic sulfur, from coal has been developed by the Department of Chemical Engineering at WVU. The extraction is preformed at mild conditions (202°C and atmospheric pressure) using the solvent N-Methyl-2-Pyrrolidone (NMP). Laboratory results have shown that this technique yields a clean coal product containing less than 1 percent ash and virtually no inorganic sulfur.;This research was conducted for further process design and economic development of an industrial-scale extraction process.;This research reported the possibility of production scale processing by constructing a pilot plant. The pilot plant was used to explore the …

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Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil Dec 2000

Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil

Graduate Theses, Dissertations, and Problem Reports (ETD)

The waterflood performance of the dual five-spot pilot project in the Stringtown oil field, situated in West Virginia, has been studied. A numerical simulator, called BOAST98, was used for the simulation purposes, after developing a reservoir description.;The producing horizon in the field is the Upper Devonian Gordon sandstone, which is characterized by severe heterogeneity due to the depositional environment. Using available core and log data and geological analysis, a reservoir characterization study was done. A preliminary reservoir description based on log porosity-core permeability correlation was improved by developing Artificial Neural Networks (A.N.N.), which incorporates geophysical well log information. These A.N.N.'s …

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Three-Dimensional Image Reconstruction Of Skeletal Tissue From Computed Tomography, Sundareswar Bangalore Jayashekar Dec 2000

Three-Dimensional Image Reconstruction Of Skeletal Tissue From Computed Tomography, Sundareswar Bangalore Jayashekar

Graduate Theses, Dissertations, and Problem Reports (ETD)

Edge Detection Techniques play a very important role in medical imaging. Pre-operative diagnosis of diseases such as cancer, tumors, bone fractures etc. depend on edge detection techniques to identify the malignant growths. In orthopedics, edge detection techniques are used in the reconstruction of the skeletal system from modalities such as MRI (magnetic resonance imaging) and CT (computed tomography).;In this thesis, we develop a simple process for the three dimensional image reconstruction of the human knee, starting from computed tomography scans. Designing a digital image processing technique which successfully separates the bone from the surrounding flesh and muscle tissue is the …

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Development And Evaluation Of Glass Fiber-Reinforced Composite/Wood Railroad Crossties, Krit Laosiriphong Dec 2000

Development And Evaluation Of Glass Fiber-Reinforced Composite/Wood Railroad Crossties, Krit Laosiriphong

Graduate Theses, Dissertations, and Problem Reports (ETD)

Railroad crossties are strengthened by wrapping glass fiber reinforced composites (GFRC). In addition, durability of crossties has been found to have enhanced by reinforcing them with GFRC wraps. In order to reduce the cost, GFRC wraps are not used to wrap the entire length of a crosstie, but only in the region that holds steel plates. The objective of this research is to select compatible adhesive between creosote treated wood and glass fabric, and study the performance of wrapped wooden crossties.;Five primer/resin combinations (Resorcinol Formaldehyde group) were screened for strength and durability of treated wood crossties. To evaluate stiffness and …

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Carbon Products From Coal Liquefaction Fractions, Lizbeth Laureano-Perez Dec 2000

Carbon Products From Coal Liquefaction Fractions, Lizbeth Laureano-Perez

Graduate Theses, Dissertations, and Problem Reports (ETD)

Processes for coal conversion are being evaluated for the development of carbon-product precursors. In the present work, coal hydrogenation is being considered as a procedure for tailoring the properties of the precursors for specific carbon products. The object of this project is to assess and evaluate such coal-derived materials for use as precursors for the production of carbon products. Coal liquefaction samples are made under various processing conditions, e.g. temperature, pressure, solvent. Softening points, ash content and coking values of the samples are determined at WVU by ASTM methods. These samples were also examined for coke microstructure and mesophase formation. …

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Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai Dec 2000

Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai

Graduate Theses, Dissertations, and Problem Reports (ETD)

Erosion by solid particle impact is a common problem in many industrial applications. It results due to mechanical contact between the particle and the metal surface, which in turn result in potential material losses. Erosion of machine parts by the small solid particle entrained in liquid or gaseous working environment is a serious problem in many industrial applications. Numerous experiments have been conducted to obtain empirical relations for predicting material loss due to these impacts and to arrive at an appropriate material for a particular working environment. But with so many new materials being used for different applications, and operating …

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Approaches To Creating Anonymous Patient Database, Shijun Shen Dec 2000

Approaches To Creating Anonymous Patient Database, Shijun Shen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Health care providers, health plans and health care clearinghouses collect patient medical data derived from their normal operations every day. These patient data can greatly benefit the health care organization if data mining techniques are applied upon these data sets. However, individual identifiable patient information needs to be protected in accordance with Health Insurance Portability and Accountability Act (HIPAA), and the quality of patient data also needs to be ensured in order for data mining tasks achieve accurate results. This thesis describes a patient data transformation system which transforms patient data into high quality and anonymous patient records that is …

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Longwall Weighting Events At Phalen Colliery, Nova Scotia, Canada, Robert J. Macdonald Dec 2000

Longwall Weighting Events At Phalen Colliery, Nova Scotia, Canada, Robert J. Macdonald

Graduate Theses, Dissertations, and Problem Reports (ETD)

Weightings are dynamic phenomenon observed in mines where coal is extracted using the longwall mining method. Weightings are characterized by high convergence rates within the powered supports which maintain roof stability along the longwall face. Rapid convergence is induced by ground pressures that exceed the load capacity of the supports, and forces them to yield. A weighting event need not necessarily impact the mining process negatively, but notable cases exist where weightings have caused extensive damage to roof strata resulting in large roof falls and prolonged periods of lost coal production.;This thesis describes the history of four longwall panels (No's …

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The Benton Harbor Area Benchmarking Study, George A. Erickcek, Brad R. Watts Dec 2000

The Benton Harbor Area Benchmarking Study, George A. Erickcek, Brad R. Watts

Reports

No abstract provided.

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Straight From The Heart, Volume 2, Number 4, Sacred Heart University Dec 2000

Straight From The Heart, Volume 2, Number 4, Sacred Heart University

News, Magazines and Reports

No abstract provided.

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Bs News Dec 2000

Bs News

Building Services Engineering

No abstract provided.

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An Attempt To Estimate Gestational Age Of Newborns Using Physical Characteristics, Muhammed A. Al-Mansoob, Afrah S. Al-Nuzeili Dec 2000

An Attempt To Estimate Gestational Age Of Newborns Using Physical Characteristics, Muhammed A. Al-Mansoob, Afrah S. Al-Nuzeili

Saudi Medical Journal

OBJECTIVE: To investigate the validity of using some physical characteristics to estimate gestational age of the Yemini newborn babies and to compare the results with the findings of other similar studies. METHODS: By using the definitions of 12 physical characteristics and the simple and multiple regression methods, the gestational ages of 184 Yemeni newborns were estimated. RESULTS: The study has proved that, with reasonable estimation precision, only 5 physical characteristics namely skin texture, skin opacity, plantar creases, ear firmness and skull hardness can be used to estimate the gestational age of the Yemeni newborn babies. Further, estimation precision will be …

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Colorectal Spirochetosis, Issam A. Al-Bozam, Ammar C. Al-Rikabi Dec 2000

Colorectal Spirochetosis, Issam A. Al-Bozam, Ammar C. Al-Rikabi

Saudi Medical Journal

Colorectal spirochetosis is a very rare pathologic condition that was been described several decades ago; however, its clinical significance is debatable in causing problems to human beings. We describe the first 2 documented cases of colorectal sprirochetosis in Saudi Arabia and discuss the different views about this entity and it9s clinical significance.

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Toward A Pragmatic Understanding Of Status-Consciousness: The Case Of Deregulated Education, Tomiko Brown-Nagin Dec 2000

Toward A Pragmatic Understanding Of Status-Consciousness: The Case Of Deregulated Education, Tomiko Brown-Nagin

Duke Law Journal

This Article discusses the relationship between federal equal protection doctrine and the states' experiment with deregulated education-in particular, charter schools whose student bodies are identifiable on the basis of status. I argue that the states' experiment with deregulated education and the Supreme Court's understanding of the limitations imposed by the federal Equal Protection Clause on status-conscious state action are substantially in conflict, though not inevitably so. Reconciling state policy and federal constitutional law requires, first, that state legislatures draft laws that are consistent with the Court's skepticism of explicitly status-conscious state action, and its ambivalence toward state action that addresses …

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Application Of The Doctrine Of Equivalents To Means Plus Function Claims: Wms Gaming Inc. V. International Game Technology, John N. Kandara Dec 2000

Application Of The Doctrine Of Equivalents To Means Plus Function Claims: Wms Gaming Inc. V. International Game Technology, John N. Kandara

Duke Law Journal

No abstract provided.

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Assessing The Potential Impact Of The Proposed Hague Jurisdiction And Judgments Convention On Human Rights Litigation In The United States, Thomas E. Vanderbloemen Dec 2000

Assessing The Potential Impact Of The Proposed Hague Jurisdiction And Judgments Convention On Human Rights Litigation In The United States, Thomas E. Vanderbloemen

Duke Law Journal

No abstract provided.

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Novel Processing Of Hydroxyapatite-Zirconia Composites Using Nano-Sized Particles, Mark R. Towler, I. R. Gibson, S. M. Best Dec 2000

Novel Processing Of Hydroxyapatite-Zirconia Composites Using Nano-Sized Particles, Mark R. Towler, I. R. Gibson, S. M. Best

Chemical and Biochemical Engineering Faculty Research & Creative Works

A method to produce composites of hydroxyapatite (HA) with ZrO2 (Y-TZP) additions between 0 and 10 wt % at a low sinter temperature of 750 °C is presented. The method limits the amount of reaction between the HA and ZrO2. A ZrO2 loading level that would improve strength while limiting the decomposition of the HA is studied.

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Generalized Tcp Congestion Avoidance And Its Effect On Bandwidth Sharing And Variability, Archan Misra, John Baras, Teunis Ott Dec 2000

Generalized Tcp Congestion Avoidance And Its Effect On Bandwidth Sharing And Variability, Archan Misra, John Baras, Teunis Ott

Research Collection School Of Computing and Information Systems

To model possible suggested changes in TCP window adaptation in response to randomized feedback, such as ECN (explicit congestion notification), we formulate a generalized version of the TCP congestion avoidance algorithm. We first consider multiple such generalized TCP flows sharing a bottleneck buffer under the assured service model and use a fixed point technique to obtain the mean window sizes and throughputs for the TCP flows, To further study how changes in the adaptation algorithm affect the variability in the throughput, we use an analytical-cum-numerical technique to derive the window distribution (and related statistics) of a single generalized flow under …

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Confucian Ethics And The Critique Of Ideology, Alan Kam Leung Chan Dec 2000

Confucian Ethics And The Critique Of Ideology, Alan Kam Leung Chan

Research Collection College of Integrative Studies

The debate between Hans-Georg Gadamer and Jürgen Habermas provides a fresh perspective from which Confucian philosophy may be approached. In this paper, focusing on the Lunyu (Analects), I argue that the sayings of Confucius reflect an essentially 'conservative' orientation, finding in tradition a reservoir of insight and truth. There is a critical dimension to it in that ethical reflection and self-cultivation would enable the individual to challenge particular claims of tradition. However, can self-cultivation transcend tradition as a whole and enable the individual to effect radical change? Following the strategy of Habermas' critique of Gadamer, what happens if tradition is …

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Texture And Young’S Modulus Of Nickel/Gamma-Alumina Composites, Abdulaziz Alamr Dec 2000

Texture And Young’S Modulus Of Nickel/Gamma-Alumina Composites, Abdulaziz Alamr

Masters Theses

To improve Young's modulus of 2024-T3 rolled aluminum specimens, it was electroplated with nickel reinforced with nano-particles of γAl2O3. Taguchi method was used to investigate the effect of coating variables, which were current density, coating time, and mixing rate, on the coating thickness. The coatings were tested for crystallographic texture, using pole figures of (200) and (111) for nickel and (400) for γAl2O3. Surface topography was measured using WYKO Vertical Interference Microscope. The crystallographic texture of nickel in the coating depended on the coating conditions. A universal testing machine was- used to …

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Montana Kaimin, December 1, 2000, Associated Students Of The University Of Montana Dec 2000

Montana Kaimin, December 1, 2000, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

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