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Sand Casting Benchmarking: Questionnaire Development, Analysis And Participant Evaluation., Kimberly Hawkins Spangler Jan 2000

Sand Casting Benchmarking: Questionnaire Development, Analysis And Participant Evaluation., Kimberly Hawkins Spangler

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research focused on obtaining information on sand casting practices and providing participants in the research with feedback. It also focused on determining if any significant relationships existed among the data. A detailed questionnaire, containing 96 questions, was developed and sent to sand casters. Fifty sand casters participated in the benchmarking study during late 1995 and early 1996. The data were analyzed to provide the participants with a personalized evaluation indicating how they compared with other sand casters pouring the same primary type of metal. The data were further analyzed using correlations and non-parametric statistical tests to determine if any …


The Distribution Of Federal Grants In Appalachia: The Effects Of Race., Steven Ray Gregory Jan 2000

The Distribution Of Federal Grants In Appalachia: The Effects Of Race., Steven Ray Gregory

Graduate Theses, Dissertations, and Problem Reports (ETD)

African Americans are an economically and socially oppressed group both currently and historically within the American South and Appalachian region. They experience socioeconomic barriers at local and national levels. Even so, within Appalachian counties, populations with greater percentages of African Americans receive greater per capita federal grant spending. Moreover, southern Appalachian counties including counties in the Black Belt region show the most dramatic increases in federal grants. Still, within Appalachian counties receiving increased federal grants, unemployment rates are not affected. Further, metropolitan counties are not benefitting from increased federal grant spending. Consequently, these counties are experiencing economic growth with little …


Protecting The Florida Keys: An Internet Gis/Ims Strategy For Benthic Habitat Management., Frank Crawford Martin Jan 2000

Protecting The Florida Keys: An Internet Gis/Ims Strategy For Benthic Habitat Management., Frank Crawford Martin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Technological advancements in the Internet particularly in multimedia and other visualization approaches generally pose great potential for Geographic Information Science (GISci). This potential brings with it both conceptual and operational issues that require consideration and collective, long-range planning in order to effectively implement the developing technologies. The relevant issues surrounding this adoption in the area of benthic habitat management are examined. The Florida Keys National Marine Sanctuary (FKNMS), and specifically Conch Reef, are used as the case study for this work with particular attention to geographic information systems, multimedia and Internet map servers, management issues, logistical requirements, data access and …


Toward Improving The Paper Map: Exploring And Implementing Digital And Virtual Campus Maps For West Virginia University., Thomas Luke Ritz Jan 2000

Toward Improving The Paper Map: Exploring And Implementing Digital And Virtual Campus Maps For West Virginia University., Thomas Luke Ritz

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research examines significant design and map development issues in development of digital and virtual campus maps for West Virginia University. The theoretical frameworks of traditional cartography and digital mapping technologies reveal the interconnections between the elements of good map design and the complexities of mapping in the digital environment. The development of the campus maps for this research are part of a project that represents a working agreement between West Virginia University and the West Virginia State GIS Technical Center. Background information on the campus map project is presented to place the project in context and to illustrate the …


The Impact Of Age On Political Participation In West Virginia., Beth Laine Taylor Jan 2000

The Impact Of Age On Political Participation In West Virginia., Beth Laine Taylor

Graduate Theses, Dissertations, and Problem Reports (ETD)

Political participation in the United States can take several distinct forms, reflecting numerous socioeconomic and demographic factors that determine patterns of civic engagement. Within West Virginia, the presence of a high proportion of aged citizens has led to interesting levels of involvement. Differing patterns of engagement between age groups can be explained with regard to the influence of life-cycle, generational and period (historical) effects. Analysis of survey data reveal that older individuals are more likely to participate in conventional political activities such as voting and letter writing to elected officials, but are less likely to participate in unconventional forms of …


Dimensional Changes Of Polysulfide Impression Materials Over Time., Saeid Zeiaei-Nafchi Jan 2000

Dimensional Changes Of Polysulfide Impression Materials Over Time., Saeid Zeiaei-Nafchi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to investigate the effect of time on dimensional changes of polysulfide impression materials over time. A stainless steel die fabricated according to the ADA, Standards Specification No.19 was used. Measurements were carried out at 15 minutes intervals up to 3 hours and at 6, 12, and 24 hours. Results, the mean, and the percentage dimensional changes were reported. All collected data was based on a repeated measure design. Split plot analysis of variance at P< 0.05 was used to calculate any statistically significant dimensional changes over time among the three impression materials. All three impression materials tested could produce replicas with clinically acceptable dimensional changes up to 24 hours after making the impression. However, after 3 hours, there were significantly greater dimensional changes approaching our standard of 40 µm acceptability. It is therefore recommended that polysulfide impression materials be poured within 3 hours of making the impression.


The Relationship Between Trait Anxiety And Goal Orientation Among Starting And Non-Starting College Football Players., Eric Limegrover Jan 2000

The Relationship Between Trait Anxiety And Goal Orientation Among Starting And Non-Starting College Football Players., Eric Limegrover

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the relationships between trait anxiety and goal orientation in starting and non-starting college football players. One hundred and fifty-two volunteer male participants from Carnegie Mellon, Duquesne and Fairmont State took part in the study. The sample consisted of three National Collegiate Athletic Association (NCAA) football divisions (i.e., IAA, II, III). All participants completed the Sport Anxiety Scale (SAS; Smith, Smoll, & Shultz, 1990), the Task and Ego Orientation in Sport Questionnaire (TEOSQ; Duda & Nicholls, 1992), and a Demographic Questionnaire. A 2 X 2 MANOVA and three 2 X 2 ANOVAs were …


Knowledge And Utilization Of Ultrasonic/Sonic Scaling Instruments: A Survey Of West Virginia Dental Hygienists., Janet Lucille Bee Jan 2000

Knowledge And Utilization Of Ultrasonic/Sonic Scaling Instruments: A Survey Of West Virginia Dental Hygienists., Janet Lucille Bee

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent progress in understanding periodontal disease, combined with advances in the design and efficiency of powered scaling instruments suggest the need to reexamine the use of powered scaling instruments. A literature review reveals a lack of information addressing the extent of utilization of these instruments by dental hygienists. However, the literature is replete with information recommending the use of these devices in the treatment of periodontal disease. Information describing the knowledge level dental hygienists posses about ultrasonic/sonics and their current philosophy for using these instruments is needed. The purpose of this study was to determine how dental hygienists use powered …


Speech Acts As A Focus Of Variation Studies: Aae Vs. Eae., Brian Jose Jan 2000

Speech Acts As A Focus Of Variation Studies: Aae Vs. Eae., Brian Jose

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent research in linguistics, and specifically within the field of applied linguistics, has been concerned with the different ways that speech acts are realized in different languages. This is so that language learners can learn to adequately conform to those norms in the target language. However, much of this research has assumed that all speakers of the relevant languages, such as American English, for example, are homogeneous, that they all perform the given speech acts in the same ways. I argue that this is an erroneous assumption: just as there is phonological variation, for example, between dialects of a language, …


An Examination Of Existing Caregiving Models And Male Spousal Caregivers., Kristi A. Barnes Jan 2000

An Examination Of Existing Caregiving Models And Male Spousal Caregivers., Kristi A. Barnes

Graduate Theses, Dissertations, and Problem Reports (ETD)

As part of a larger study examining well-being among older West Virginia residents, male spousal caregivers (n = 30) and their non-caregiving counterparts (n = 99) were compared on self-reports of physical and psychological well-being, and appraisals of social support. Demographic trends suggest the importance of examining the caregiving situation among females, the traditional caregivers, and male caregivers who are growing in numbers. The data revealed few differences between caregivers and non-caregivers, chronological age was not a factor. This suggests that the male and female caregiving experience are not consistent. Given the growing percentage of male caregivers and the demand …


Aparicion Del Discurso Historico Y Del Discurso Mi­Tico-Religioso En "Chango El Gran Putas"., Claudia P. Acosta Jan 2000

Aparicion Del Discurso Historico Y Del Discurso Mi­Tico-Religioso En "Chango El Gran Putas"., Claudia P. Acosta

Graduate Theses, Dissertations, and Problem Reports (ETD)

Este trabajo analiza la aparición de los discursos histórico y mítico-religioso en el libro de Zapata Olivella, Changó el Gran Putas. Estos van a ser mirados desde su relación complementaria y a la vez como posibilitadores de aspectos literarios diferentes. En el primer capítulo expone la importancia del discurso histórico como fundamento de la diégesis de esta obra. También analiza la manifestación de la historia en cada uno de los capítulos del libro, para mirar la apropiación que el autor hace de ésta y como logra transformarla en un acontecer literario. El segundo capítulo va a centrarse en el papel …


Female To Male Dating Violence: Borderline Personality Characteristics, Attachment Style, Psychopathology, And Motivation., Chastity Nicole Farr Jan 2000

Female To Male Dating Violence: Borderline Personality Characteristics, Attachment Style, Psychopathology, And Motivation., Chastity Nicole Farr

Graduate Theses, Dissertations, and Problem Reports (ETD)

Self-reported physically violent females (Perpetrators and Mutually Violent) were compared with nonviolent females (Controls and Victims), on measures of borderline personality disorder, attachment, and psychopathology. Motivation for engaging in violence was investigated with Female Perpetrators and Mutually Violent groups. Results indicated that Mutually Violent females reported a significantly greater percentage of borderline characteristics. Major Mutually Violent individuals showed more borderline characteristics than the Nonviolent group. There were no significant differences within attachment styles. Female Perpetrators were significantly more hostile than the Nonviolent participants. Major Mutually Violent participants showed significantly more somatization, interpersonal sensitivity, anxiety, hostility, phobic anxiety, number of symptoms, …


Chicken Lysine α-Ketoglutarate Reductase (Lkr) In Different Tissues And Effects Of Graded Levels Of Dietary Lysine On Lkr And Lysine Oxidation., Megharaja Kandagal Manangi Jan 2000

Chicken Lysine α-Ketoglutarate Reductase (Lkr) In Different Tissues And Effects Of Graded Levels Of Dietary Lysine On Lkr And Lysine Oxidation., Megharaja Kandagal Manangi

Graduate Theses, Dissertations, and Problem Reports (ETD)

To understand tissue participation in lysine oxidation, chicken lysine α-ketoglutarate reductase (LKR) activity and lysine oxidation (LOX) were measured in vitro. LKR activity was measured using a spectrophotometer and LOX was measured by collection of 14CO2 from [U-14C] L-lysine. LKR and LOX were measured in homogenates prepared from liver, kidney, pancreas, heart, brain, lungs, spleen, muscle, and intestine. LKR activities were 1000-fold LOX. LKR activity was highest in liver and intestine each approximately 63 µmoles/(hr*g tissue). Activity in other tissues was significantly greater than zero except for muscle. Muscle, liver, and intestine contributed about 70%, 15% and 6.5% respectively of …


Nuclear Factor-κb Signal Transduction: Development Of A Novel Regulatory Strategy., Navin V. Swaroop Jan 2000

Nuclear Factor-κb Signal Transduction: Development Of A Novel Regulatory Strategy., Navin V. Swaroop

Graduate Theses, Dissertations, and Problem Reports (ETD)

The overall goal of this project was to investigate the feasibility of a new strategy to inhibit the NF-κB signal transduction pathway. Peptide P1 that resembled IκBα , the intracellular inhibitor’s kinase binding domain was designed to competitively inhibit IκBα’s degradation. Preliminary results in stably transfected cells indicated that P1 produced a two-fold inhibition in NF-κB dependent luciferase activity in Lipopolysaccharide (LPS) stimulated RAW cell line, but not in BEAS-2B cell line. A transient transfection protocol was optimized in the BEAS-2B cell line and the effect of P1 was compared to SN50 a known inhibitor of NF-κB pathway. Our results …


A Performance Evaluation Of The Mems: An On-Road Emissions Measurement System Study., Benjamin C. Shade Jan 2000

A Performance Evaluation Of The Mems: An On-Road Emissions Measurement System Study., Benjamin C. Shade

Graduate Theses, Dissertations, and Problem Reports (ETD)

A study was conducted to measure brake-specific mass emissions from heavy-duty diesel-fueled engines during their in-use, on-road operation. A Mobile Emissions Measurement System (MEMS) was designed and constructed to accomplish this task. A review of systems from the past 20 years was conducted to determine the limitations of similar systems, to outline the constraints of the MEMS design, and to provide the highest level of accuracy and ruggedness required to withstand the rigors of on-board, on-road testing. None of the systems in the published literature could meet the requirements of such a measurement system. State-of-the-art detectors and sensors were obtained, …


Ecology Of Bald Eagles During The Postfledging Period At Rural And Suburban Nest Sites In Southwest Florida., Dorothy Edna Tinkler Jan 2000

Ecology Of Bald Eagles During The Postfledging Period At Rural And Suburban Nest Sites In Southwest Florida., Dorothy Edna Tinkler

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study, I examined aspects of fledgling and adult behavior at the nest site. Approximately 90% of the observations placed the fledgling bald eagles within the 456m secondary buffer zone. The fledglings centered their activity in the lowest disturbance levels possible. Fledglings were observed most frequently in the nest, on the ground, or perched in a pine tree. For 92% of the intensively observed individuals, 100% of the 50% core use area occurred within the primary buffer zone. Percent overlap of the 95% core use area with the secondary buffer zone was significantly different between suburban and rural fledglings …


Stalking: Developing An Empirical Typology To Classify Stalkers., Kevin Scott Del Ben Jan 2000

Stalking: Developing An Empirical Typology To Classify Stalkers., Kevin Scott Del Ben

Graduate Theses, Dissertations, and Problem Reports (ETD)

Stalking has received a great deal of attention from the media and its harmful effects on victims have been well documented. Stalking is also more common than previously thought, leading researchers to classify stalkers into groups in an attempt to predict future behavior. Previous research has grouped stalkers based on theoretical models rather than trying to empirically examine stalking behaviors along with other factors such as motivation, type of relationship, and attachment style in determining a typology of stalkers. Female college students (N = 108) who had experienced harassing behaviors responded to questions regarding their perceptions of those behaviors. First …


Development Of System Parameters For Enhanced Cutting And Finishing Of Handglass Using A Carbon Dioxide Laser., Christopher Edward Thompson Jan 2000

Development Of System Parameters For Enhanced Cutting And Finishing Of Handglass Using A Carbon Dioxide Laser., Christopher Edward Thompson

Graduate Theses, Dissertations, and Problem Reports (ETD)

In handglass manufacturing, a need has been identified for a more efficient method to crack off glassware. Extended cutting and finishing times and high rates of breakage in the glassware hinder current methods. For example, due to the physical nature of thermal cracking, crack-off is not easily controlled and after separation is achieved, further finishing of the glassware is required. Depending on the glass properties and worker skill level, losses due to breakage can be as high as 80 percent in some product lines. The Laser Glass Cutting Machine (LGCM) is a joint project among the National Energy Technology Laboratory …


The Test Of Two Dual Processing Models., Vincent Patrick Maffeo Jan 2000

The Test Of Two Dual Processing Models., Vincent Patrick Maffeo

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to investigate and uncover evidence that supports the Elaboration Likelihood Model (Petty & Cacioppo, 1979, 1981, 1984; Petty Cacioppo & Goldman, 1981) and the Heuristic Systematic Model (Chaiken, 1980, 1982, 1987: Chaiken & Eagly, 1983). The participants for this study were 77 undergraduates at a large northeastern university. Recall was measured a 3 stage manipulation of argument strength. While not statistically significant the means of the three groups appeared to be different.


Dynamic Behavior Characterization Of Fine Powders Consisting Of A Homogeneous Emulsion, And, Synthesis And Decomposition Of Methane Gas Hydrate: A Reaction Engineering Study., Sridhar Narasimhan Jan 2000

Dynamic Behavior Characterization Of Fine Powders Consisting Of A Homogeneous Emulsion, And, Synthesis And Decomposition Of Methane Gas Hydrate: A Reaction Engineering Study., Sridhar Narasimhan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work quantitatively characterizes the flow and mixing properties of aerated bulk fine powders between the minimum fluidization and minimum bubbling velocities (Umf < U < Umb). In order to accomplish this characterization, the viscosity of the emulsion phase was measured using the Maxwell’s model for the rheological behavior of complex bodies along with the set of rheological parameters proposed by Kono et al (1994). A unique property of the bulk fine powder called the relaxation time (t) was measured experimentally and this property was combined with another rheological parameter called the plastic deformation coefficient (Y) to give the viscosity of the emulsion phase as m = Yt. SECTION II This work describes the first homogeneous formation and decomposition of methane gas hydrates within several different synthetic sediments by using a highpressure batch reaction system. The pressure of the formation reaction was varied in the range of 6.8 – 13.6 MPa while the temperature was maintained constant at 273.5 K Decomposition of hydrate was accomplished through controlled depressurization starting at a pressure of 2.7 MPa, maintaining the temperature constant at 273.5 K. Overall reaction order, both for the formation and decomposition were also determined.


Chou Wen-Chung's Cursive, Jian-Jun He Jan 2000

Chou Wen-Chung's Cursive, Jian-Jun He

Graduate Theses, Dissertations, and Problem Reports (ETD)

As the first contemporary Chinese composer recognized by the Western musical world, Chou Wen-Chung is widely acknowledged for his innovations and contributions to the profession. His music is a successful fusion of Eastern and Western musical language, and it has continued to receive critical acclaim. Cursive (1963), a duet for flute and piano, is one of Chou's most important compositions. In this work, the composer tries to express the aesthetic principles of Chinese calligraphy musically. This thesis provides a thorough analysis of the musical materials and compositional techniques employed in Cursive, and based on this analysis, the author attempts to …


Effects Of Diameter-Limit And Two-Age Timber Harvesting On Songbird Populations On An Industrial Forest In Central West Virginia, Cathy Ann Weakland Jan 2000

Effects Of Diameter-Limit And Two-Age Timber Harvesting On Songbird Populations On An Industrial Forest In Central West Virginia, Cathy Ann Weakland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many studies examining forest fragmentation effects on songbirds have been conducted in landscapes significantly altered by urbanization or agriculturalization rather than forested landscapes. There is some evidence that forest fragmentation due to timber harvesting has different effects on bird abundance than fragmentation from other land uses. It is unknown how songbirds respond to different forms of timber harvesting as fragmentation events. Also, it is unclear if microhabitat-level or landscape-level characteristics are more important predictors of breeding bird occurrence in the central Appalachians. The objectives of my study were to determine the short-term effects of diameter-limit and two-age timber harvesting on …


The Effects On Student's Personality Preferences From Participation In Odyssey Of The Mind., Scott A. Warner Jan 2000

The Effects On Student's Personality Preferences From Participation In Odyssey Of The Mind., Scott A. Warner

Graduate Theses, Dissertations, and Problem Reports (ETD)

The problem for the research was to determine what effects participation in the OM program had on the development of personality preferences in elementary school children. The purposes of the research were to: (1) provide research data to teachers that justifies the use of teaching strategies to meet the needs of students toward the development of their personality preferences, and (2) provide research data toward further investigation of inventive personality characteristics and the programs that encourage their growth and development. The subjects for the study were selected from students in grades 3 to 5 at two elementary schools within the …


The Relationship Between Administrators' Perceptions Of Part-Time Faculty And Utilization Of Part-Time Faculty At West Virginia Public And Private Colleges And Universities., Susan J. Weaver Jan 2000

The Relationship Between Administrators' Perceptions Of Part-Time Faculty And Utilization Of Part-Time Faculty At West Virginia Public And Private Colleges And Universities., Susan J. Weaver

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the trends in hiring part-time faculty in West Virginia colleges and universities. The restructuring paradigm places the utilization of part-time faculty within the context of changes in the culture of higher education. Questionnaires were sent to 163 administrators of West Virginia public and private 4-year institutions. Complete responses were received from 134 presidents, vice-presidents for academic affairs, provosts, deans, and in select circumstances, division chairs. There were no significant relationships between the administrator's attitude toward part-time faculty and the administrator's position, years in administration, or years teaching. Attitude toward part-time faculty as measured by the Part-time Faculty …


Educators' Views Of Implementing Direct Instruction Curricula: Connections To Students With Disabilities., Brenda Wilson Jan 2000

Educators' Views Of Implementing Direct Instruction Curricula: Connections To Students With Disabilities., Brenda Wilson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the process of the first year of implementation of Direct Instruction curricula as seen through the eyes of the educators implementing it. The study also attempted to determine if general educators' knowledge and use of Direct Instruction techniques while implementing a published curriculum would translate into more effective practices toward students with disabilities in the general education classroom. Seventeen teachers at a small rural elementary school were studied as they implemented Direct Instruction curricula for the first time. The teachers used the Reading Mastery, Corrective Reading and Language for Learning programs published …


Solo Piano Performances In London From 1837 To 1850: A Cultural And Musical Evolution., Lisa A. Withers Jan 2000

Solo Piano Performances In London From 1837 To 1850: A Cultural And Musical Evolution., Lisa A. Withers

Graduate Theses, Dissertations, and Problem Reports (ETD)

Solo piano performances evolved into a unique form of public concert (the piano recital) during the early part of the nineteenth century. Social, intellectual and economic factors were involved in creating the conditions necessary for this evolution, and it was in London that the most significant early developments occurred. It is the premise of this study that the economic and social influence of the newly wealthy, English, upper middle class was instrumental in creating a cultural tradition of solo piano performances. The formation of a canon of pianistic works suitable for frequent performance was a direct result of this new …


An Overview Of Piano Sonatas Nos. 1 And 2 By Alfred Schnittke., Nozomi Yamaguchi Jan 2000

An Overview Of Piano Sonatas Nos. 1 And 2 By Alfred Schnittke., Nozomi Yamaguchi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Alfred Schnittke was a Russian composer who is regarded as one of the leading avant-garde composers of our time; he recently passed away in 1998. His prolific works were eclectic in a wide variety of genres and styles. He was particularly known for polystylicism, a coined word to describe a combination of different styles. Among such works are his piano sonatas, which deserve study and performance since they also represent an important contribution to the continuing genre in the twentieth-century. This document gives brief analyses of his first two piano sonatas. After Schnittke's biography and discussions of his major works, …


The Numerical Simulation Of The Flow Of An Injected Grout In Underground Room And Pillar Coal Mines., James Mark Stiles Jan 2000

The Numerical Simulation Of The Flow Of An Injected Grout In Underground Room And Pillar Coal Mines., James Mark Stiles

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research was conducted to develop a computer program, Groutnet , to simulate the flow of a grout injected in a room and pillar coal mine. Previous rheological investigations have demonstrated that grouts composed largely of coal ash and water are Bingham fluids. Because the simulation of a large scale grout injection operation by solving the three dimensional equations of motion would be prohibitively expensive, the equations of motion were integrated in the vertical direction, and the unsteady and convective acceleration terms in the momentum equations were neglected. In order to achieve a closed set of equations, a uniform flow …


Part 1. Structure, Stability And Reactivity Of Small Organic Sulfinic And Sulfonic Acids: Toxicological Implications. Part 2. Role Of Charge Transfer Complexes In Oxidative Cleavage Of Benzpinacols By Iron(Iii) Trisphenanthroline., Serge Alex Svarovsky Jan 2000

Part 1. Structure, Stability And Reactivity Of Small Organic Sulfinic And Sulfonic Acids: Toxicological Implications. Part 2. Role Of Charge Transfer Complexes In Oxidative Cleavage Of Benzpinacols By Iron(Iii) Trisphenanthroline., Serge Alex Svarovsky

Graduate Theses, Dissertations, and Problem Reports (ETD)

Part 1. Structure, stability, and mechanisms of oxidation and hydrolysis of a number of thiourea-S-oxides (thiourea dioxide; N-methylthiourea dioxide; N,N′-dimethylthiourea dioxide; thiourea and N,N′-dimethylthiourea trioxides; and sodium hydroxymethanesulfinate) have been investigated by means of UV-VIS, stopped-flow; X-ray crystallography; molecular calculations; ESR; NMR; and oxygen consumption studies. It was found that oxidation of thioureas does not always proceed through the generally accepted successive addition of oxygen atom to the sulfur center. Instead, thiourea dioxides appear to be the major end product in these oxidations. Mechanism of hydrolysis of thiourea dioxides in basic media reveals complex chemical kinetics which involves initial heterolytic …


The Effects Of On-Line Course Development, Prior Computer Experience, And Learning Style On Developers' Attitudes And Performance., James Takacs Jan 2000

The Effects Of On-Line Course Development, Prior Computer Experience, And Learning Style On Developers' Attitudes And Performance., James Takacs

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined the effects of learning style, prior computer experience, and a 15-week, on-line development course on developers' attitudes and performance before, during, and after the instruction. The treatment, prior computer experience, and developers' learning style were used as the independent variables. Responses from the stages of concern instrument and final project performance scores were used as the dependent measures. Simple regressions and ANOVAs were used to determine whether any effects or relationships existed among the variables. The results of this study show no significant effects found in the relationship of learning style on developers' on-line course development performance …