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2004

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A Watershed-Based Classification System For Lakes In Agriculturally-Dominated Ecosystems: A Case Study Of Nebraska Reservoirs, Henry N. N. Bulley Dec 2004

A Watershed-Based Classification System For Lakes In Agriculturally-Dominated Ecosystems: A Case Study Of Nebraska Reservoirs, Henry N. N. Bulley

Department of Geography: Dissertations, Theses, and Student Research

In recent decades substantial progress has been made in improving the quality of surface waters in the United States (Hawkins et al., 2000; EPA, 2000; EPA, 2001); nevertheless, much work remains to be done in assessing the state of impairment of lake waters. Impairment implies that the existing water quality of a lake, as measured by selected criteria (e.g., nitrogen, phosphorus, chlorophyll-a, Secchi depth), exceeds a threshold value or standard that presumably reflects optimal attainable lake water quality conditions (or "reference" conditions) (Hughes, 1995; EPA, 2000; EPA, 2001). Such impaired waters are not suitable for designated uses such as drinking, …

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Self-Regulation In A Web-Based Course: A Case Study, Joan Whipp, Stephannie Chiarelli Dec 2004

Self-Regulation In A Web-Based Course: A Case Study, Joan Whipp, Stephannie Chiarelli

College of Education Faculty Research and Publications

Little is known about how successful students in Web-based courses self-regulate their learning. This descriptive case study used a social cognitive model of self-regulated learning (SRL) to investigate how six graduate students used and adapted traditional SRL strategies to complete tasks and cope with challenges in a Web-based technology course; it also explored motivational and environmental influences on strategy use. Primary data sources were three transcribed interviews with each of the students over the course of the semester, a transcribed interview with the course instructor, and the students’ reflective journals. Archived course documents, including transcripts of threaded discussions and student …

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The Singapore-India Connection: A Tale Of Two Industrial Parks, Caroline Yeoh, Wongso Kevin, Wee Tan Dec 2004

The Singapore-India Connection: A Tale Of Two Industrial Parks, Caroline Yeoh, Wongso Kevin, Wee Tan

Research Collection Lee Kong Chian School Of Business

In recent times, Singapore has, as part of its regionalisation strategy, established industrial parks in various countries, including China, Vietnam, and India. The parks are marketed as a winning combination of the host country’s unique location advantages and Singapore-style efficiency and management know-how. Singapore’s foray into India, in particular, was marked by the setting up of the ITPL in Bangalore; a development that met with great success. However, with global businesses shifting interests towards India, and competing industrial parks emerging to meet the increasing demand, ITPL is faced with stiff competition from other industrial parks; and Singapore has since announced …

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Penny Pricing And The Components Of Spread And Depth Changes, David K. Ding, K.H. Chuang, C. Chearoenwong Dec 2004

Penny Pricing And The Components Of Spread And Depth Changes, David K. Ding, K.H. Chuang, C. Chearoenwong

Research Collection Lee Kong Chian School Of Business

Recent studies show that decimal pricing led to significant reductions in the spread and depth on the NYSE. In this paper, we examine how the observed changes in the spread and depth can be attributed to different factors. We show that stocks with higher proportions of one-tick spreads and odd-sixteenth quotes, and more frequent trading before decimalization experienced larger declines in the spread and depth afterwards. We interpret this result as evidence of reduced binding constraints and increased price competition under decimal pricing. We also find that decimal pricing led to nontrivial changes in select stock attributes, and that these …

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Laboratory Evaluation Of Some Eastern African Meliaceae As Sources Of Larvicidal Botanicals For Anopheles Gambiae, Mary Ndung'u, Baldwyn Torto, Bart G.J. Knols, Ahmed Hassanali Dec 2004

Laboratory Evaluation Of Some Eastern African Meliaceae As Sources Of Larvicidal Botanicals For Anopheles Gambiae, Mary Ndung'u, Baldwyn Torto, Bart G.J. Knols, Ahmed Hassanali

All Peer-Reviewed Publications

Root bark extracts of five Meliaceae species (Turraea abyssinica Hochst., Turraea wakefeldii Oliv., Turraea mombassana Hiern ex C.DC., Trichilia roka (Forsk) Chiov. and Melia volkensii Guerke.) and different fractions thereof (following chloroform extraction and column chromatographic separation) were compared for their immediate toxicity and long-term effects on Anopheles gambiae Giles sensu stricto (Diptera: Culicidae). Larvicidal effects of the extracts appeared to be largely associated with limonoids of medium polarity with M. volkensii and T. mombassana extracts being more potent than those of the other Meliaceae. Long-term (6-8 days post-exposure) observations at lower doses showed that 100% cumulative mortality can be …

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Effect Of Agroecosystem Diversity On Natural Enemies Of Maize Stemborers In Coastal Kenya, C. A.O. Midega, C. K.P.O. Ogol, W. A. Overholt Dec 2004

Effect Of Agroecosystem Diversity On Natural Enemies Of Maize Stemborers In Coastal Kenya, C. A.O. Midega, C. K.P.O. Ogol, W. A. Overholt

All Peer-Reviewed Publications

A study was conducted at Mtwapa in the northern coastal area of Kenya during the long and short rainy seasons of 1999 and 2000 to assess the benefits of agroecosystem diversification-through agroforestry and intercropping-on the activity of natural enemies of maize stemborers. Treatments consisted of maize and cowpea intercrops or maize monocrops planted within hedgerows of Leucaena leucocephala and Gliricidia sepium. The plots were mulched or unmulched and insecticide-treated or not. The maize stemborers encountered, in order of abundance, were Chilo partellus, Chilo orichalcociliellus and Sesamia calamistis. The egg parasitoids Trichogramma spp. and Telenomus spp. were recovered from stemborer eggs. …

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A Tga/Ftir And Mass Spectral Study On The Thermal Degradation Of Bisphenol A Polycarbonate, Bok Nam Jang, Charles A. Wilkie Dec 2004

A Tga/Ftir And Mass Spectral Study On The Thermal Degradation Of Bisphenol A Polycarbonate, Bok Nam Jang, Charles A. Wilkie

Chemistry Faculty Research and Publications

The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed using FTIR, GC–MS and LC–MS. The structures of the evolved products are assigned on the basis of FTIR and GC/MS results. The main thermal degradation pathways follow chain scission of the isopropylidene linkage, and hydrolysis/alcoholysis and rearrangement of carbonate linkages. In the case of chain scission, it was proposed that methyl scission of isopropylidene occurs first, according to the bond …

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Evanston After Fifty Years, Norman A. Hjelm Dec 2004

Evanston After Fifty Years, Norman A. Hjelm

Occasional Papers on Religion in Eastern Europe

No abstract provided.

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Modernist Hermeneutics In Ottokar Prohaszka, Leslie A. Muray Dec 2004

Modernist Hermeneutics In Ottokar Prohaszka, Leslie A. Muray

Occasional Papers on Religion in Eastern Europe

No abstract provided.

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Church And State Relations In Present-Day Serbia: Part I A Brief Historical Overview Of Serbia: Important Issues Of Religious Identity, Angela Ilić Dec 2004

Church And State Relations In Present-Day Serbia: Part I A Brief Historical Overview Of Serbia: Important Issues Of Religious Identity, Angela Ilić

Occasional Papers on Religion in Eastern Europe

No abstract provided.

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Hundert's "Jews In Poland-Lithuania In The Eighteenth Century" - Book Review, Stephen J. Chernoski Dec 2004

Hundert's "Jews In Poland-Lithuania In The Eighteenth Century" - Book Review, Stephen J. Chernoski

Occasional Papers on Religion in Eastern Europe

No abstract provided.

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Contextual Biometric Watermarking Of Fingerprint Images, Nikhil C. Tungala Dec 2004

Contextual Biometric Watermarking Of Fingerprint Images, Nikhil C. Tungala

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research presents contextual digital watermarking techniques using face and demographic text data as multiple watermarks for protecting the evidentiary integrity of fingerprint image. The proposed techniques embed the watermarks into selected regions of fingerprint image in MDCT and DWT domains. A general image watermarking algorithm is developed to investigate the application of MDCT in the elimination of blocking artifacts. The application of MDCT has improved the performance of the watermarking technique compared to DCT. Experimental results show that modifications to fingerprint image are visually imperceptible and maintain the minutiae detail. The integrity of the fingerprint image is verified through …

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Effect Of Driving Cycles On The Particulate Mass And Number Emissions From In-Use Heavy Heavy-Duty Diesel Vehicles, Sairam Thiagarajan Dec 2004

Effect Of Driving Cycles On The Particulate Mass And Number Emissions From In-Use Heavy Heavy-Duty Diesel Vehicles, Sairam Thiagarajan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study focused primarily on the particle mass and number emission from various in-use heavy heavy-duty diesel vehicles operating on different driving cycles. Chemical speciation results are also presented to discuss the formation and composition of particles emitted during various cycles. Tests were performed with West Virginia University's Transportable Heavy Duty Vehicle Emissions Testing Laboratory located at Riverside, California. Five vehicles were selected to cover a wide range of model year from 1989 to 2004. All five vehicles were subjected to chemical speciation and analysis conducted by Desert Research Institute. WVU employed the use of the Scanning Mobility Particle Sizer …

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Models Of High-Temperature Desulfurization Using Zinc-Based Sorbents, Yong Zhang Dec 2004

Models Of High-Temperature Desulfurization Using Zinc-Based Sorbents, Yong Zhang

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study focuses on determining models that are currently available to describe gas-solid reactions to predict the observed (experimental) results from a series of TGA experiments. Variations of the GPM (Grainy Pellet Model) were used and shown to give good agreement with experimental conversion histories of zinc oxide particle undergoing sulfidation using H2S at temperature in the range of 482 to 593 degree centigrade.;By using SEM (Scanning Electron Microscope) and Visilog(TM) imaging analysis software, the grain size distribution and grain sphericity can be obtained.;The basic forms of the SCM (Shrinking Core Model) and GPM models could not predict correctly the …

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Using Dendrochronology To Identify Species-Specific Ice Storm Damage In Delaware, Matthew John Smolnik Dec 2004

Using Dendrochronology To Identify Species-Specific Ice Storm Damage In Delaware, Matthew John Smolnik

Graduate Theses, Dissertations, and Problem Reports (ETD)

Ice storms are recurrent disturbances that alter forest succession and retard tree growth rates throughout North America. Following a 1994 ice storm in Delaware, the Delaware Forest Service established seventy-five study plots to sample four species of trees (southern red oak [Quercus falcate ], white oak [Quercus alba], loblolly pine [ Pinus taeda], and yellow poplar [Liriodendron tulipifera ]) affected by the ice storm. The objectives of this study are to: (1) explore the species-specific growth rates and responses to the ice storm; and (2) determine which of the four species is best suited to provide dendroecological records of past …

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Women And Social Services In Saudi Arabia, Khadija Nasseef Dec 2004

Women And Social Services In Saudi Arabia, Khadija Nasseef

Graduate Theses, Dissertations, and Problem Reports (ETD)

This master thesis talks about social services for women that provided by social welfare agencies in Saudi Arabia. This thesis is a descriptive study that uses the content analysis as a method to investigate social services agencies that provides special services for women. This thesis also had special interest in social services that improve women's lives in Saudi Arabia. The content analysis is made on documents and brochures of 4 main social services agencies that offer services for women. The content analysis was made in term of these agencies main aim and target, their main massage, their programs for women, …

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What Is The Impact Of Parental Support On Early Literacy?, Deborah K. Bush Dec 2004

What Is The Impact Of Parental Support On Early Literacy?, Deborah K. Bush

Graduate Theses, Dissertations, and Problem Reports (ETD)

Today, more than 75 percent of women ages 25--34 and 75 percent of women with a child under six years of age participate in the labor force. When both parents work outside the home, they often want to send their child to preschool, but preschool classes aren't always available, and often those that are available are the government programs that are open only to those of lower socio-economic status.;In addition, parents often want to support the emergent literacy of their children and help prepare them for kindergarten but aren't sure of how to provide the type of assistance that might …

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Students' And Instructors' Attitudes Toward Using Biometric Technology As An *Identification Method In Online Courses, Wafi Albalawi Dec 2004

Students' And Instructors' Attitudes Toward Using Biometric Technology As An *Identification Method In Online Courses, Wafi Albalawi

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study investigated the social and cultural issues related to the implementation of biometric technology at the College of Human Resources and Education at West Virginia University. The study employed both quantitative and qualitative research methodologies. The researcher verbally interviewed five instructors and five graduate students. The quantitative research methods employed two surveys. The research population involved 30 instructors and 189 graduate students. The researcher utilized independent-sample t-tests to compare different groups. The results obtained from this research support the following: (1) there is a real privacy concern among instructors and students regarding the implementation of biometric technology, (2) religious …

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Use Of Commercial Cfd Software For Assessing The Performance Of Personal Aerosol Samplers, Aaron J. Bird Dec 2004

Use Of Commercial Cfd Software For Assessing The Performance Of Personal Aerosol Samplers, Aaron J. Bird

Graduate Theses, Dissertations, and Problem Reports (ETD)

Accurate performance of personal aerosol samplers is critical for industrial hygienists' successful efforts to protect workers. Performance assessments of personal samplers are necessarily conducted in controlled environments so unknown sources of variability will not influence the results. This is done in order that samplers may be used with confidence for monitoring workplace air quality. These performance evaluations are usually conducted in wind tunnels. However, recent advances in high-performance cluster computing---together with advanced flow modeling software---have made it possible to evaluate sampler performance with computer simulations. This was done in the current research. Simulations were conducted for air and particle behavior …

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Strength Evaluation Of Honeycomb Frp Sandwich Panels With Sinusoidal Core Geometry, An Chen Dec 2004

Strength Evaluation Of Honeycomb Frp Sandwich Panels With Sinusoidal Core Geometry, An Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, the demands in civil infrastructure have provided opportunities for development and implementation of Honeycomb Fiber-Reinforced Polymer (HFRP) sandwich panels, both in rehabilitation projects and new constructions.;This dissertation is the first study on strength evaluation of HFRP sandwich panels with sinusoidal core geometry. Core materials for sandwich structures are primarily subjected to out-of-plane compression and shear. Therefore, three major contributions are included in this dissertation: out-of-plane compression, out-of-plane shear, and study on facesheet laminates. Two analytical models, corresponding to pure compression and elastic buckling failure, respectively, are provided for panels subject to out-of-plane compression. The facesheet and core …

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Linear Engine Development For Series Hybrid Electric Vehicles, Csaba Toth-Nagy Dec 2004

Linear Engine Development For Series Hybrid Electric Vehicles, Csaba Toth-Nagy

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation argues that diminishing oil reserves, concern over global climate change, and desire to improve ambient air quality all demand the development of environment-friendly personal transportation. In certain applications, series hybrid electric vehicles offer an attractive solution to reducing fuel consumption and emissions. Furthermore, linear engines are emerging as a powerplant suited to series HEV applications. In this dissertation, a linear engine/alternator was considered as the auxiliary power unit of a range extender series hybrid electric vehicle. A prototype linear engine/alternator was developed, constructed and tested at West Virginia University. The engine was a 2-stroke, 2-cylinder, dual piston, direct …

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Automatic Hydraulic Fracturing Design For Low Permeability Reservoirs Using Artificial Intelligence, Andrei Sergiu Popa Dec 2004

Automatic Hydraulic Fracturing Design For Low Permeability Reservoirs Using Artificial Intelligence, Andrei Sergiu Popa

Graduate Theses, Dissertations, and Problem Reports (ETD)

The hydraulic fracturing technique is one of the major developments in petroleum engineering in the last two decades. Today, nearly all the wells completed in low permeability gas reservoirs require a hydraulic fracturing treatment in order to produce at an economical level. This study presents a new methodology, applicable to tight gas reservoirs, for designing hydraulic fractures.;This study is intended to develop an automatic hydraulic fracture design tool to help users design fracture jobs without being an expert in the art and science of hydraulic fracturing. This process is composed entirely of an integration of several artificial intelligence techniques.;The methodology …

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Strategies For Sustainable Professional Development Programs To Promote Effective Pedagogical Use Of Instructional Technology In Teaching, Karla R. Assis Cezarino Dec 2004

Strategies For Sustainable Professional Development Programs To Promote Effective Pedagogical Use Of Instructional Technology In Teaching, Karla R. Assis Cezarino

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine a set of common strategies employed by sustainable instructional technology professional development programs that are found to successfully promote educators' high-level use of technology in their teaching practice. Two questions guided this study: (a) Research Question 1: What do successful instructional technology professional development programs recognize as indicators of high-level use of technology? and (b) Research Question 2: Which instructional technology professional development strategies successfully promote high-level use of instructional technology in participants' teaching practice?;An online questionnaire consisting of close-ended questions and open-ended questions was used as the means of data collection. …

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Characterization Of Cyp2d Protein From Human Brain Cerebellum, Deepak Bhatia Dec 2004

Characterization Of Cyp2d Protein From Human Brain Cerebellum, Deepak Bhatia

Graduate Theses, Dissertations, and Problem Reports (ETD)

To date, knowledge in characterization of CYP proteins has been limited to immunoblotting, RT-PCR, immunohistochemistry and so forth; therefore, it is the intention of this study to investigate: (1) What kind of CYP2D protein is present in brain with modern proteomic tools; (2) Whether, CYP2D6 in brain is same as the liver CYP2D6; and (3) If CYP2D7 is present, can CYP2D6 polymorphism be found in the brain?;To answer these questions, this study used a one-step method of isolation of protein by immunoprecipitation followed by its identification using 2D-blots, nanospray LCMS, immunoblots and immunohistochemistry. Probing of immunoprecipitated proteins with polyclonal CYP2D6 …

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Potential Mechanisms Linking Nutrition And Neuroendocrine Control Of Reproduction In The Sheep, Adam Bradley Dobbins Dec 2004

Potential Mechanisms Linking Nutrition And Neuroendocrine Control Of Reproduction In The Sheep, Adam Bradley Dobbins

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nutrition and reproduction are linked in that the nutritional status of an individual influences its reproductive performance, i.e. an individual in negative energy balance will have decreased ability to reproduce. The mechanisms in which nutrition influences reproduction are not understood. My data suggest that reductions in lutenizing hormone secretion resulting from photoperiod-induced increases in sensitivity to testosterone negative feedback may be mediated, at least in part, by elevated neuropeptide Y (NPY), a hypothalamic neuropeptide shown to alter gonadotropin releasing hormone release and potently affect food intake. The results from my second study support our hypothesis that the growth hormone mediated …

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Experimental Validation Of The "Target Hood Static Pressure" Balancing Method For Exhaust Ventilation Systems, Michael Winifred Dodrill Dec 2004

Experimental Validation Of The "Target Hood Static Pressure" Balancing Method For Exhaust Ventilation Systems, Michael Winifred Dodrill

Graduate Theses, Dissertations, and Problem Reports (ETD)

An experimental trial of a new method to balance industrial exhaust ventilation systems was performed. Although balance by design is considered preferable, many ventilation systems incorporate dampers to balance the system to a different airflow distribution after installation. The "target hood static pressure" method aims to minimize the time, effort, frustration and confusion invested in the balancing effort. It requires only one and one-half adjustment rounds, can be prepared as a computerized spreadsheet, and substitutes hood static pressure readings for airflow traverse readings. The method also minimizes the system static pressure to the least possible, thereby keeping friction losses at …

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Comparison Of Chestnut Canker Treatment Procedures For Hypovirus Introduction, Brian C. Bell Dec 2004

Comparison Of Chestnut Canker Treatment Procedures For Hypovirus Introduction, Brian C. Bell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Historically, hypovirulent strains of Cryphonectria parasitica have been introduced into cankers principally by inoculating wounds made to the margin of cankers. Twelve hypovirus introduction methods were tested. Seventy-two trees were inoculated in June 2002 with an orange-pigmented virulent strain of C. parasitica (two inoculations per tree). After 11 weeks, the resulting cankers were treated with a brown-pigmented hypovirulent C. parasitica isolate using one of the following methods: (1) a non-invasive treatment where the inoculum was painted onto the canker surface; (2) an invasive treatment where the canker face was wounded with a sharp blade prior to the painting application of …

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Specific Aspects Of Social Anxiety Related To Children's Peer Sociometric Status, Abby H. Friedman Dec 2004

Specific Aspects Of Social Anxiety Related To Children's Peer Sociometric Status, Abby H. Friedman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study examined the association between specific aspects of social anxiety and sociometric status. Participants included 268 children in grades 4, 5, and 6. The children completed the Social Anxiety Scale for Children-Revised (SASC-R) and the Social Phobia and Anxiety Inventory for Children (SPAI-C). A sociometric nomination procedure was used to categorize participants into sociometric status groups (i.e., neglected, rejected, controversial, popular, and average). Results replicated and extended previous literature. Neglected children scored the highest on both measures of social anxiety, followed by rejected children. This was one of the first investigations to associate socometric status with SPAI-C factor …

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Characteristics Of West Virginia Secondary Agricultural Educators, James C. Beatty Dec 2004

Characteristics Of West Virginia Secondary Agricultural Educators, James C. Beatty

Graduate Theses, Dissertations, and Problem Reports (ETD)

All agricultural educators are expected to teach each student the three aspects of the agricultural education program, FFA, Supervised Agricultural Experience programs, and classroom and laboratory instruction. The purpose of this study was to determine the characteristics of an agricultural educator in the state of West Virginia. Agricultural educators rated reading, writing, and mathematics incorporation into the curriculum above average in the survey. They also felt that they encouraged professional and respectful relationships with their students almost all of the time. The amount of sarcasm used in the classroom, and bypassing school policy when the situation warranted it, returned varying …

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Natural Gas Exploration Associated With Fracture Systems In Alleghenian Thrust Faults In The Greenbrier Formation, Southern West Virginia, Craig A. Edmonds Dec 2004

Natural Gas Exploration Associated With Fracture Systems In Alleghenian Thrust Faults In The Greenbrier Formation, Southern West Virginia, Craig A. Edmonds

Graduate Theses, Dissertations, and Problem Reports (ETD)

A hydrocarbon play has been identified in southern West Virginia targeting the intersection of thrust faults with specific Mississippian reservoirs. Late Paleozoic sandstone and limestone reservoirs are traditional pays of the study area, often yielding economic natural gas production, with initial production rates ranging between 100 to 200 Mcf per day per well. In contrast, production rates from wells that encounter faults often exceed 500 Mcf per day. We believe this prolific production results from secondary fracture porosity and enhanced permeability from fracture zones associated with thrust faults, providing a conduit to the Union Oolite reservoir member of the Greenbrier …

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