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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Mathematical Analysis For The Hydrodynamic Model Of Semiconductors., Chen Zhu Jan 1997

Mathematical Analysis For The Hydrodynamic Model Of Semiconductors., Chen Zhu

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis we study two cases of the hydrodynamic model of semiconductors: the nonisentropic case for one species and the isentropic case for two species. The purpose of this thesis is to discuss the asymptotic stability of the steady state solutions for these two cases. First we show the existence of a one-parameter family of steady state solutions. Each steady state solution is uniquely determined by the momentum. Then, we prove that every steady state solution is asymptotically stable. Namely, if the initial data is "close" to a given steady state solution, then the dynamic solution will asymptotically approaches …

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A Parametric Study Of Knock Control Strategies For A Bi-Fuel Engine., William Scott Wayne Jan 1997

A Parametric Study Of Knock Control Strategies For A Bi-Fuel Engine., William Scott Wayne

Graduate Theses, Dissertations, and Problem Reports (ETD)

A numerical thermodynamic model was developed and employed to investigate the use of elevated compression ratios, variable valve timing, and ignition timing modulation as a means of controlling knock and improving the performance of a bi-fuel engine. The proposed strategy employed an increased compression ratio to boost power and torque when operating on natural gas. An increased intake duration and retarded ignition timing were then employed to control knock during gasoline operation. Dynamometer testing was performed on a 1.9 liter Saturn{dollar}\\sp\\circler{dollar} engine to provide empirical data for model calibration and to evaluate the effects of proposed changes on engine emissions. …

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Crime And The Nation: Prison Reform And Popular Fiction In Philadelphia, 1786-1800., Peter Thomas Okun Jan 1997

Crime And The Nation: Prison Reform And Popular Fiction In Philadelphia, 1786-1800., Peter Thomas Okun

Graduate Theses, Dissertations, and Problem Reports (ETD)

The prison reformers and fiction writers of post-Revolutionary Philadelphia wrote prodigiously about crime and punishment. In a correlative study, I explore juridical topoi in reformist and fictive texts familiar to republican Philadelphians. My analysis assumes a public sphere of writers and readers: while late eighteenth-century prison reforms and fictions came out of separate signifying systems, there was considerable promiscuity between them. I group areas of overlap around cultural concerns (science, murder, sex) and representational "spaces" (home, prison, nation). In either discourse, crime and punishment were useful to a post-Revolutionary aesthetic of nationalism. The scientific rhetoric of penitentiary punishment targeted the …

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Performance-Tunable Distributed Execution Of Object-Based Software., George Braden Rinard Jan 1997

Performance-Tunable Distributed Execution Of Object-Based Software., George Braden Rinard

Graduate Theses, Dissertations, and Problem Reports (ETD)

The central challenge in software engineering research and practice is to improve the quality and performance of software systems, while decreasing the cost for producing such systems. While the combination of parallel execution with component-based software construction provides opportunities for addressing the software development challenge, it also raises a fundamental distributed software engineering dilemma, not adequately addressed in the literature. This dilemma is a result of the following two observations: (1) The quality and productivity benefits of reusability accrue only when reusable components are used without modifications. (2) For improved performance in a distributed environment, it must be possible to …

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Postsecondary Persistence Of Ged Students., Maria C. Rose Jan 1997

Postsecondary Persistence Of Ged Students., Maria C. Rose

Graduate Theses, Dissertations, and Problem Reports (ETD)

More nontraditional students are attending college, and many of these students are enrolled with GED certification. The validity using GED certification as postsecondary admission criteria has been questioned. Participants included 251 students enrolled with GED certification as admission criteria to a small Mid-Atlantic college in the Spring 1997 semester. The influence of ACT, GED, literacy scores, learning and study skills, and the number of successfully completed developmental classes on grade point averages was researched. Students were interviewed to gain insight into students' perceptions of factors contributing to persistence in college. ACT scores were found to be good predictors of grade …

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Robust Design Optimization With Applications To Composite-Material Structures., Satheesh Makkapati Jan 1997

Robust Design Optimization With Applications To Composite-Material Structures., Satheesh Makkapati

Graduate Theses, Dissertations, and Problem Reports (ETD)

The problem of robust design and optimization for designs with varying operating conditions is considered in this work. A robust design optimization tool (RDOT) has been developed in this work. The tool is constructed with building blocks: an Artificial Neural Network, a Response Evaluator (e.g., FEA, etc.), an Optimizer based on Quadratic Programming, Cooperative Game Theory, Design of Experiments, and Taguchi Methods. The tool is fully codified into a computer program, and it demands very little designer insight into the problem under consideration. Design optimization is necessary to efficiently accomplish a design that, while satisfying the desired functionality, also uses …

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A Neural Network Based Inference Engine Generator For Comprehension And Translation Of English And Spanish Commands To Unix "E-Mail" And "Vi" Editor., Mohammad Reza Moozoun Jan 1997

A Neural Network Based Inference Engine Generator For Comprehension And Translation Of English And Spanish Commands To Unix "E-Mail" And "Vi" Editor., Mohammad Reza Moozoun

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since the advent of computers, scientists have tried to use the human languages for communication with computers. This pursuit has led several scientists, such as Chomsky to establish that there must be a specific part of the brain adapted to language learning and processing genetically, namely the "language organ". Humans are able to understand and produce sentences that they may have never heard. This leads to the understanding that language must follow some strict rules of processing which is referred to as "grammar of a language". The Artificial Neural Networks (NN) inspired by the neural networks of biological systems have …

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Comparison Of A Pin Cam And An Inverted Pin Cam Design Based On The Parameters Used For The Axial Vane Rotary Engine (Beta Version)., Phillip Howard Burnside Jan 1997

Comparison Of A Pin Cam And An Inverted Pin Cam Design Based On The Parameters Used For The Axial Vane Rotary Engine (Beta Version)., Phillip Howard Burnside

Graduate Theses, Dissertations, and Problem Reports (ETD)

The comparison of two design variations of the Axial Vane Rotary Engine (AVRE) was done by evaluating several parameters. These two designs are called the Pin Cam and the Inverted Pin Cam designs. The first step involved developing a technique to determine the heat loads on the components of the engines since the engine is running at a steady state loading condition. The second step used this thermal data to get a final temperature profile. The third step combined the thermal data and the combustion data to perform a structural analysis of the engine components. This illustrated both the stresses …

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Faculty Stance Toward Multiculturalism And Multicultural Education: A Qualitative Study., Jane Sheridan Cardi Jan 1997

Faculty Stance Toward Multiculturalism And Multicultural Education: A Qualitative Study., Jane Sheridan Cardi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Studies indicate that the implementation of multiculturalism into university general education course requirements such as introductory American literature is sporadic. Furthermore, although research suggests that faculty are more frequently including multicultural literature in their courses, there is little research concerning what faculty believe about multiculturalism and multicultural education and how faculty actually teach multiculturalism in higher education. The purpose of this study is to contribute to the knowledge of why faculty do or do not implement multiculturalism into their curricula and if they do, how they implement it. This study uses phenomenological and hermeneutic research methods to explore the stances, …

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A Comparative Study Of The Development Of Educational Psychology In China And America., Huiping Liu Cervenka Jan 1997

A Comparative Study Of The Development Of Educational Psychology In China And America., Huiping Liu Cervenka

Graduate Theses, Dissertations, and Problem Reports (ETD)

Some people argue that Western psychology and Asian psychology are fundamentally different and irreconcilable. Western psychology is scientific and analytic-reductionistic, while Asian psychology is concerned with man's harmony{dollar}\\...{dollar} (in Paranjpe et al, 1988, p18). This study examines and compares the scientific roots of Western psychology and the humanistic roots of Asian psychology in an attempt to determine commonality between Chinese and American educational psychology. A historical comparative method is used in this study. Two approaches, the personalistic and the naturalistic are employed to examine the development of educational psychology in China and America. Results show that Western psychology has been …

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Defining Developmentally Appropriate Practice In Physical Education., Nigel Davies Jan 1997

Defining Developmentally Appropriate Practice In Physical Education., Nigel Davies

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purposes of this study were to: (1) define developmentally appropriate practice and identify practices within planning, instruction, content, evaluation and management which will enhance the facilitation of developmentally appropriate practice; and (2) compare and analyze the five participant sub-groups, to identify similarities and differences among these groups. The sample was randomly determined from the current AAHPERD membership list, categorized, via self-designation, into teacher educators, motor developmentalists, physical education teachers, graduate students, undergraduate students. One hundred and eleven participants (n = 111) completed and returned the Developmentally Appropriate Practice Inventory (DAPI). In phase one, each statement was analyzed utilizing the …

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There Was Something In The Water: Parallels In Paradigms In English And Physics, 1880 To 1940., Tracy Joan Demars Jan 1997

There Was Something In The Water: Parallels In Paradigms In English And Physics, 1880 To 1940., Tracy Joan Demars

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study posits that a paradigm is a shared vision of reality that governs how practitioners define and relate to the many and varied components that make up that reality. Using this definition, the author presents a visual model using concentric spheres of increasing abstraction that rearrange T. S. Kuhn's four components of a disciplinary matrix that he articulated in the 1969 Postscript to The Structure of Scientific Revolutions. Based on this model and D'Amico's criteria for a coherent narrative, the study assesses the two primary paradigms, labeled the Object-Oriented paradigm and the Subject-Oriented paradigm, that existed in the fields …

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The Relationship Between Brain Hemispheric Characteristics And Leadership Style Of School Superintendents In West Virginia., Theodora Sinicrope Farmer Jan 1997

The Relationship Between Brain Hemispheric Characteristics And Leadership Style Of School Superintendents In West Virginia., Theodora Sinicrope Farmer

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was designed to examine the relationship between the self-perceived preferred brain hemispheric processing of West Virginia public school superintendents and their self-perceived leadership styles. Respondents completed the Hermann Brain Dominance Profile, the Leader Behavior Description Questionnaire, and a demographic sheet. Data were analyzed using the General Linear Model of the Statistical Analysis System (SAS). Two hypotheses guided the study. West Virginia public school superintendents who perceive themselves as preferring predominantly left hemispheric processing will have significantly higher Initiating Structure scores than superintendents who perceive themselves as predominantly right hemispheric. West Virginia public school superintendents who perceive themselves as …

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The Effects Of Error Detection Instruction On Developmental Algebra Students., Susan Limpert Goodwin Jan 1997

The Effects Of Error Detection Instruction On Developmental Algebra Students., Susan Limpert Goodwin

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study posed the following questions: (a) Does error-detection instruction improve students' confidence levels and/or reduce anxiety? (b) Do students find error-detection instruction helpful? (c) Do students' methods and awareness of error detection change after instruction? and (d) Does age, sex, math background or personality influence attitudes toward errors and error detection? College developmental algebra students received error-detection instruction during a semester-long beginning algebra course. They discussed errors and error detection mainly through the medium of "Pat Perplexed" problems. Pat was a mythical student who rarely got a problem correct. Pat's errors were corrected and explained collaboratively. Research on transfer, …

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Oligopsony Elements In The Recycled Wastepaper Market: Existence And Implications., Aref Aghaei-Hervani Jan 1997

Oligopsony Elements In The Recycled Wastepaper Market: Existence And Implications., Aref Aghaei-Hervani

Graduate Theses, Dissertations, and Problem Reports (ETD)

Old newspaper (ONP) is the largest single component (14%) of total U.S. Municipal Solid Waste (MSW). The rising problems associated with disposal of MSW in landfills can be dealt with if the volume of the waste stream is reduced by recycling. The wastepaper recycling market, in particular ONP, has not been successful in utilizing the ONP generated. The existence of high sunk costs for entry into deinking market, along with the small numbers of buyers in the ONP market were identified as reasons that the ONP market had oligopsony elements. This research examined oligopsony in the ONP market and its …

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A Laboratory Study Of The Geochemistry Of Anoxic Limestone Drains., Patrick Lynn Sterner Jan 1997

A Laboratory Study Of The Geochemistry Of Anoxic Limestone Drains., Patrick Lynn Sterner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Treatment of acid mine drainage (AMD) through the use of anoxic limestone drains (ALDs) is a technology that has shown mixed success. Precipitation of solid phase materials, primarily Fe{dollar}\\sp{lcub}3+{rcub}{dollar} and Al{dollar}\\sp{lcub}3+{rcub}{dollar} hydroxides, inhibits limestone dissolution by presumably creating a barrier between the limestone surface and the AMD, which impedes neutralization at an optimum rate. A laboratory project was initiated to: monitor geochemical transformations of reactive species ({dollar}\\rm Al\\sp{lcub}3+{rcub},\\ Fe\\sp{lcub}3+{rcub}{dollar}, and SO{dollar}\\sb4\\sp{lcub}2-{rcub}{dollar}), determine solid phases controlling precipitation reactions, and determine a kinetic model for limestone dissolution in ALDs. Laboratory ALDs were constructed and filled with graded, washed limestone. Three sampling ports …

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Chromosome Aberrations, Their Distribution And Clonality In Radiation-Exposed And Unexposed Human Lymphocytes., Kirby Lawrence Johnson Jan 1997

Chromosome Aberrations, Their Distribution And Clonality In Radiation-Exposed And Unexposed Human Lymphocytes., Kirby Lawrence Johnson

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work was conducted to determine the frequency and distribution of stable cytogenetic damage (translocations and insertions) in human lymphocytes using chromosome painting. Included were cells exposed to gamma radiation in vitro and selected individuals from a healthy unexposed California population (n = 27), and a population of Russians exposed during cleanup work the Chernobyl nuclear accident (n = 120) and Russian controls (n = 69). The in vitro results showed that the frequencies of radiation-induced stable aberrations in chromosomes 3, 5 and 6 were proportional to chromosome size. The results in the California population showed that the frequencies of …

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An Experimental And Numerical Study Of Residence Time And Mixing Characteristics Of A Full Flow Dilution Tunnel., Sunil Katragadda Jan 1997

An Experimental And Numerical Study Of Residence Time And Mixing Characteristics Of A Full Flow Dilution Tunnel., Sunil Katragadda

Graduate Theses, Dissertations, and Problem Reports (ETD)

A stimulus-response technique was applied to a co-current flow with mixing orifice type full-flow dilution tunnel to determine its fluid residence time distribution and mixing characteristics. The technique involved the injection of a tracer at the inlet and the observation of the corresponding response at the sampling zone of the tunnel. Both propane gas and corn oil aerosol of approximately 0.5 {dollar}\\mu{dollar}m in diameter were used as the non-reacting tracers for the newly developed gas injection detection system (GIDS) and aerosol injection detection system (AIDS). Data were gathered from the tunnel operated under steady-state conditions and at three different volumetric …

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Research Experiences In Teacher Preparation: Effectiveness Of The Green Bank Preservice Teacher Enhancement Program., Debra A. Hemler Jan 1997

Research Experiences In Teacher Preparation: Effectiveness Of The Green Bank Preservice Teacher Enhancement Program., Debra A. Hemler

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the effectiveness of the preservice teacher component of the Research Experiences in Teacher Preparation (RETP) project aimed at enhancing teacher perceptions of the nature of science, science research, and science teaching. Data was collected for three preservice teacher groups during the three phases of the program: (I) a one week institute held at the National Radio Astronomy Observatory in Green Bank, West Virginia where teachers performed astronomy research using a 40 foot diameter radio telescope; (II) a secondary science methods course; and (III) student teaching placements. Four Likert-type instruments were developed and …

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Use Of Prefabricated Vertical Drains (Pvds) For Enhanced Soil Flushing., John Dante Quaranta Jan 1996

Use Of Prefabricated Vertical Drains (Pvds) For Enhanced Soil Flushing., John Dante Quaranta

Graduate Theses, Dissertations, and Problem Reports (ETD)

The concept of using prefabricated vertical drains (PVDs) for remediation of contaminated sites with fine-grained soils is examined. The PVD system is used to shorten the drainage path of the groundwater flow and promote subsurface liquid movement expediting the soil flushing process. The use of PVDs in the current state of practice has been limited to soil improvement. The use of PVDs under vacuum conditions is investigated using study soils consisting of 100% sand and 80% sand/20% kaolinite mixture. PVD parameters evaluated included: Well Resistance, Zone of Influence, and Smear Effects. Applicability of the PVD soil flushing was evaluated through …

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Consensus In West Virginia Music Education: A Comparison Of Teacher Ideals And State Curriculum., Penelope Saeler Jan 1996

Consensus In West Virginia Music Education: A Comparison Of Teacher Ideals And State Curriculum., Penelope Saeler

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study investigated the ideal music curriculum as discovered in the opinions of general music teachers in West Virginia and compared that ideal curriculum to existing curriculum contained in a representative number of curriculum guides in West Virginia. The study was divided into three parts: (a) part one examined the ideals of teachers through the Delphi technique, (b) part two was an investigation of a representative number of K-8 curriculum guides through a content analysis procedure, and (c) part three determined the amount of agreement between existing curriculum and teacher ideals about curriculum. A two-round Delphi questionnaire was administered …

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The Effects Of Human Relations Skills Training On Teacher Job Satisfaction And Self-Efficacy When Assisting Emotionally Distressed Students And Parents., Ann V. Shaver Jan 1996

The Effects Of Human Relations Skills Training On Teacher Job Satisfaction And Self-Efficacy When Assisting Emotionally Distressed Students And Parents., Ann V. Shaver

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the effects of a 12 hour human relations training workshop upon the variables: (1) teacher rating of daily student and parent communications support self-efficacy; (2) teacher perceptions of the outcome of their daily supportive communication; (3) teacher feelings of competency when addressing specific student populations; and (4) daily ratings of job satisfaction. Participants included 28 of 35 Title I reading and mathematics teachers from Marion County, Fairmont, West Virginia. A time series, quasi-experiment design (similar to the multiple baseline design across behaviors) was utilized as a means of examining teacher reports of …

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Investigations In Number Theoretic Functions., Temba Shonhiwa Jan 1996

Investigations In Number Theoretic Functions., Temba Shonhiwa

Graduate Theses, Dissertations, and Problem Reports (ETD)

Gould (The Fibonacci Quarterly 2, (1964), 241-60) proved the general inversion theorem;{dollar}{dollar}f(n,k)=\\sum\\limits\\sbsp{lcub}j=k{rcub}{lcub}n{rcub} g(n,j)R(j,k)\\ {lcub}\\rm if\\ and\\ only\\ if{rcub}\\ g(n,k)=\\sum\\limits\\sbsp{lcub}j=k{rcub}{lcub}n{rcub}\\ f(n,j)A(j,k){dollar}{dollar}for any ordered sequence pair (f(n,k),g(n,k)), where R(n,k) is the number of compositions of {dollar}n\\ge 1{dollar} into k relatively prime parts and {dollar}A(n,k){dollar} is its inverse. In chapter one we obtain a variety of such ordered inversion pairs (f(n,k),g(n,k)) and give necessary and sufficient conditions for the congruence f(n,k) {dollar}\\equiv{dollar} g(n,k) (mod k) to hold, in particular criteria for {dollar}k\\ge 2{dollar} to be a prime when the congruence holds for all {dollar}n\\ge 1.{dollar} For example the pair{dollar}{dollar}(f(n,k),g(n,k))=(\\bigl({lcub}n\\atop k{rcub}\\bigr)\\left({lcub}{lcub}2n-k{rcub}\\atop n{rcub}\\right),\\ \\sum\\limits\\sbsp{lcub}i=k{rcub}{lcub}n{rcub}\\left\\lbrack{lcub}i\\over k{rcub}\\right\\rbrack\\bigl{lcub}n\\atop …

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A Cellular Model For Automatic Transport Systems., Yang Cai Jan 1996

A Cellular Model For Automatic Transport Systems., Yang Cai

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study, the Transit Automata (TA) model, a Cellular Automata (CA) based spatial model, has been developed. It includes a set of cells, states, rules, events, and a system clock. In contrast to CA, a TA model fragments the problem space along restricted routes. All cells on the routes are treated as equal and controlled by rules. Like CA models, an initial configuration of a TA model can be embedded and can be dynamically changed during the runtime. Furthermore, user-controlled events and stochastic events are used to trigger the discrete events of the model. A TA model is a …

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Expressive Endeavors Utilizing Advanced And Emerging Technical Means., Paul Louis Siciliano Jan 1996

Expressive Endeavors Utilizing Advanced And Emerging Technical Means., Paul Louis Siciliano

Graduate Theses, Dissertations, and Problem Reports (ETD)

Throughout most of known human existence the processes, materials and tools of production were available to individuals involved in both utilitarian and expressive work. Since the Renaissance, however, the exponential growth and sophistication of technology has made it impossible for the majority of artists to gain access to many potential tools for expression. Despite the complexity of myriad technical means, some individuals have been successful in utilizing advanced technologies for expressive purposes. The purpose of this study was to examine the methods these individuals employed to access and apply sophisticated technologies for expressive production. A qualitative research methodology consisting of …

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Nucleation And Growth Of Gan On Sapphire By Mbe, Steven Buczkowski Jan 1996

Nucleation And Growth Of Gan On Sapphire By Mbe, Steven Buczkowski

Graduate Theses, Dissertations, and Problem Reports (ETD)

GaN was grown by molecular beam epitaxy in an effort to determine nucleation and growth conditions which lead to high quality, single-crystal films. Atomic force microscopy (AFM) was used to show that growth under Ga-rich conditions promotes the nucleation of films with large nucleation domains leading to a lower density of intrinsic defects related to domain boundaries. These conditions are also shown to promote a 2-D growth mode resulting in films with a high degree of nucleation domain coalescence and surface roughnesses below 2 nm. Addition of atomic hydrogen, using a thermally-cracked source, is shown to increase the growth rate …

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The Relationships Between Critical Thinking Skills And Dispositions Of Generic Nursing Students And Registered Nurses Enrolled In A Bachelor Of Science In Nursing Program., Michelle Dellaria Doas Jan 1996

The Relationships Between Critical Thinking Skills And Dispositions Of Generic Nursing Students And Registered Nurses Enrolled In A Bachelor Of Science In Nursing Program., Michelle Dellaria Doas

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine if there were any significant correlations among freshman generic, senior generic, RN-BSN first year, and RN-BSN senior year nursing students in levels of critical thinking skills and critical thinking dispositions. This study examined the relationships between a variety of demographic variables and critical thinking skills and critical thinking dispositions. The demographic variables included: age, gender, marital status, years of professional nursing experience, membership in professional/student organizations, number of formal critical thinking courses taken, and other earned degrees. Two instruments were used in this study. They induced the California Critical Thinking Skills Test …

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The Effects Of Cooperative Learning And Traditional Mathematics Instruction In Grades K-12: A Meta-Analysis Of Findings., Norhayati Othman Jan 1996

The Effects Of Cooperative Learning And Traditional Mathematics Instruction In Grades K-12: A Meta-Analysis Of Findings., Norhayati Othman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to analyze the findings of research on teaching mathematics through the use of cooperative learning versus traditional teaching methods on achievement and attitude from grade K through grade 12. Meta-analysis was selected as the method which to synthesize findings and indicate the size and significance of the effects. Studies were collected from 1970 to 1992 using educational sources such as ERIC, DAI and Journal for Research in Mathematics Education. In the final analysis there were 40 studies for achievement and 25 studies in attitude. Effects size was calculated for each study using Glass's (1981) …

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The Relationship Between Self-Perceived Educational Philosophy Profile Of Public Community College Presidents And Their Self-Perceived Leadership Style., Frederick Dean Lucas Jan 1996

The Relationship Between Self-Perceived Educational Philosophy Profile Of Public Community College Presidents And Their Self-Perceived Leadership Style., Frederick Dean Lucas

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was designed to examine the relationship between the self-perceived educational philosophy profile of public community college presidents and their self-perceived leadership styles. The population consisted of 209 community college presidents identified by mailing labels from the American Association of Community and Junior Colleges who were serving in public institutions in the United States listed in the AACJC Membership Directory 1993. A proportional, stratified, random sample was conducted of 209 presidents. A cover letter, demographic survey, the Leadership Behavior Description Questionnaire-Self, and Philosophical Instrument were mailed to each subject. Overall, 111 of the presidents responded. Of these, 105 were …

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Nonlinear Chemical Dynamics: Competition And Convection Effects In Reaction-Diffusion Fronts And Controlling Chaos., Jonathan Masere Jan 1996

Nonlinear Chemical Dynamics: Competition And Convection Effects In Reaction-Diffusion Fronts And Controlling Chaos., Jonathan Masere

Graduate Theses, Dissertations, and Problem Reports (ETD)

Competition and convection effects in reaction-diffusion fronts and controlling chaos are studied. In Chapter 3 we report theoretical studies of competition in which two self-replicating organic molecules compete for a common reactant. We found that the self-replicating organic molecule can give sustained reaction-diffusion fronts. This phenomenon is investigated by numerical solutions of partial differential equations that couple local nonlinear kinetics and diffusion. Reaction-diffusion fronts involving competing species are then initiated and the concentration profiles of the autocatalysts monitored. The results show that the more reactive species totally predominates over the less reactive species as its front moves ahead into the …

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