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2000

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Kinetic Parameters And Organic Phosphorus Remineralization Potential Of Alkaline Phosphatase Activity In The Tropical Seagrass Thalassia Testudinum And Associated Epiphyton, Samantha Lorraine Evans Jan 2000

Kinetic Parameters And Organic Phosphorus Remineralization Potential Of Alkaline Phosphatase Activity In The Tropical Seagrass Thalassia Testudinum And Associated Epiphyton, Samantha Lorraine Evans

Electronic Theses and Dissertations 2000 - 2009

Tropical carbonate estuaries are P-limited due to high carbonate sorption of DIP, therefore alternative P sources may represent an important contribution to the nutrient requirements of submerged aquatic vegetation. Alkaline phosphatase (AP'ase) is a cell-surface enzyme that allows aquatic plants to utilize the organic-P pool, and its activity (APA) may generate a significant portion of plant P-requirements in oligotrophic environments. Seasonal APA of the seagrass Thalassia testudinum and its epiphytic community was measured in NE Florida Bay. APA was higher for T. testudinum leaves with intact epiphytes (TTE) than for T. testudinum leaves alone (TT) in all seasons, and the …

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Long-Term Performance Of Buried High-Density Polyethylene Plastic Piping, Cyril. Gazagnaire Jan 2000

Long-Term Performance Of Buried High-Density Polyethylene Plastic Piping, Cyril. Gazagnaire

Electronic Theses and Dissertations 2000 - 2009

The primary goal of this study was to evaluate the service life of HDPE (High Density PolyEthylene) pipes. The following experimental tasks were carried out: (i) procurement of materials, and fabrication of test setups; (ii) creep evaluation: the performance of buried pipes (notched/unnotched), subjected to live loading, was studied in soil chambers for three levels of loading (service, 2/3 and 1/3 of service). The long-term behavior was accelerated with super-ambient temperatures; (iii) field monitoring: strains and diametral changes were measured for 10,000 hours. The analytical investigations were as follows: (i) extrapolation of the long-term performance at ambient temperature, based on …

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Mobility Pattern-Based Routing Algorithm For Mobile Ad Hoc Wireless Networks, Nirav. Vyas Jan 2000

Mobility Pattern-Based Routing Algorithm For Mobile Ad Hoc Wireless Networks, Nirav. Vyas

Electronic Theses and Dissertations 2000 - 2009

This thesis describes routing in mobile ad hoc wireless networks. Ad hoc networks lack wired backbone to maintain routes as mobile hosts move and power is on or off. Therefore, the hosts in ad hoc networks must cooperate with each other to determine routes in a distributed manner. Routing based on a Location is a frequently used approach, where the searching space for a route is reduced to smaller zone by defining request zone and expected zone. We propose a mobility pattern based algorithm to reduce the overhead, then evaluate the proposed algorithm through simulation. We have implemented two mobility …

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Modeling Of A Storm Water System: Village Of Tequesta Level Of Service Study, Wayne Andrew Sharp Jan 2000

Modeling Of A Storm Water System: Village Of Tequesta Level Of Service Study, Wayne Andrew Sharp

Electronic Theses and Dissertations 2000 - 2009

The Village of Tequesta typifies an older storm water system. The infrastructure for the system has not kept up with development within the community. The design was for the conditions at the time of initial development. The levels of services provided are pertinent to establishing a direction and long term goals under current conditions. The existing seven and a half miles of conduit was modeled for a 25 year 24 hour storm. The rainfall amount simulated for the Tequesta area is 10.48 inches within a tidal area. The effects of the tide and the conditions of the conduit system lead …

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Metaphorical Worlds In Samuel Beckett's "Endgame" And Harold Pinter's "Ashes To Ashes", Robin M. Fiedler Jan 2000

Metaphorical Worlds In Samuel Beckett's "Endgame" And Harold Pinter's "Ashes To Ashes", Robin M. Fiedler

Electronic Theses and Dissertations 2000 - 2009

Harold Pinter's debt to Samuel Beckett is not a matter of direct copying or replication, but a natural progression of the postmodern dramatic form. Both Pinter and Beckett examine human violence, companionship, game playing, religion, and philosophy, culminating in a world-as-stage metaphor where characters are subtly aware of being both spectators and players. Pinter's and Beckett's mimetic representations, whether successful or not, capture the essence of existence as a continuous creative process: characters examine dreamlike memories of experiences for meaning and narrate the past in their present existence in order to bring purpose to their future. The creative process of …

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Narrative Technique In Graham Greene's "The Power And The Glory", Kathie Suzanne Russell Jan 2000

Narrative Technique In Graham Greene's "The Power And The Glory", Kathie Suzanne Russell

Electronic Theses and Dissertations 2000 - 2009

Although the preponderance of modern criticism about The Power and the Glory focuses only on religious themes and concerns, the formal narrative technique of Graham Greene deserves equal consideration. Greene very deliberately and consistently constructs a narrative that uses specific formal devices and linguistic techniques that further enhance a formal rhetorical study of the novel and that augment a thematic analysis of the novel. Greene's formal techniques include shifts in narrative point of view, precise forms of language, changing levels of diction, and specific grammatical devices. By analyzing the narrative techniques and linguistic markers that Greene employs, in conjunction with …

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Networking Trends Of Small Tourism Businesses: A Case Study Of Post-Socialist Slovakia, Charles B. Copp Jan 2000

Networking Trends Of Small Tourism Businesses: A Case Study Of Post-Socialist Slovakia, Charles B. Copp

Electronic Theses and Dissertations 2000 - 2009

The country of Slovakia has experienced many new changes since their adoption of a market economic system. The tourism industry is an area of the economy that has experienced high levels of growth and is deemed to be a cornerstone of Slovakia's future well being. The objective of this paper is to assess this industry by investigating the reorganization and use of networks by small businesses. A survey of Slovak hotels and tourism agents was conducted to evaluate these interrelationships. The results of the survey were then used to analyze the geographic differences between firms in Slovakia's tourism industry. Emerging …

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Numerical Simulation Of Wave Energy Dissipation In Turbulent Boundary Layers, Stephanie Sylvie Moneris Jan 2000

Numerical Simulation Of Wave Energy Dissipation In Turbulent Boundary Layers, Stephanie Sylvie Moneris

Electronic Theses and Dissertations 2000 - 2009

Shoaling surface waves create turbulent shear flows at the sea-bed and thereby contribute to wave energy dissipation in the bottom boundary layer. Turbulent boundary layers are examined using a high-resolution time-dependent three-dimensional numerical model. Simulations estimate the wave energy dissipation in the boundary layer. Results indicate that turbulence levels are coupled to the wave cycle; accelerating flow organizes the boundary layer structure, decelerating flow destabilizes it and flow reversal induces the strongest turbulent bursts. Details of the flow are functions of the Reynolds number, wave frequency, wave complexity, presence of a mean current, and the flow history of the preceding …

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New Woman Before She Was New: Olive Schreiner's "The Story Of An African Farm" And Fanny Fern's "Ruth Hall", Dana Jo Richardson Jan 2000

New Woman Before She Was New: Olive Schreiner's "The Story Of An African Farm" And Fanny Fern's "Ruth Hall", Dana Jo Richardson

Electronic Theses and Dissertations 2000 - 2009

Despite the designation of Olive Schreiner's Lyndall in The Story of an African Farm as the first "New Woman" in literature, the nineteenth-century New Woman, with her high ideals and belief in an androgynous compromise of sex roles, is exemplified by Fanny Fern's heroine Ruth in the novel Ruth Hall. While Lyndall speaks of social injustice done to women, the limitations of her provincial setting preclude her protests from achieving the level of social activism; however, Ruth's protests, in the form of newspaper articles, do reach the level of social activism. Schreiner's androgynous ideal becomes lost in a role reversal …

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Performance Characteristics Of Coal Fly Ash And Wood Ash-Modified Asphalt Binder, Boris. Butul Jan 2000

Performance Characteristics Of Coal Fly Ash And Wood Ash-Modified Asphalt Binder, Boris. Butul

Electronic Theses and Dissertations 2000 - 2009

Coal fly ash and wood ash were added singly to asphalt mixes as partial replacements of the asphalt cement. Mechanical property testing and cost analysis were carried out with the following percentages: 0, 10, 15, 20, and 25. The objective of the investigation was to determine the changes in mechanical properties and cost-effectiveness of ash modification. The softening point, penetration, creep displacement, and modulus of elasticity indicated stiffening of the mix with increased ash proportion. The indirect tensile and compression strengths reached peak values for the 10 and 15% mixes. The Marshall stability, the bulk density, and the maximum density, …

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Paper Curl Modeling, Wentao Lu Jan 2000

Paper Curl Modeling, Wentao Lu

Electronic Theses and Dissertations 2000 - 2009

A computational approach for characterization of curl of paper under humidity changes is presented. Asymmetric papers with nonuniform through-thickness fiber orientation distribution are considered. Testing of the constituent layers of the papers considered was conducted at various constant relative humidities to obtain the mechanical properties, moisture content, moisture expansion coefficients and stress relaxation curves. Experiments were performed on asymmetric two-ply laboratory made papers to determine the curl response under moisture loading. The influence of viscoelastic stress relaxation on the curl response was first investigated. Geometrically nonlinear finite element analysis was conducted. It was found that the curvatures relax at an …

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Peel-Off Characteristics Of Carbon Fiber Laminates Bonded To Concrete, Mauro. Barbosa Jan 2000

Peel-Off Characteristics Of Carbon Fiber Laminates Bonded To Concrete, Mauro. Barbosa

Electronic Theses and Dissertations 2000 - 2009

This study presents the experimental and theoretical studies on debond of carbon fiber laminates bonded to concrete, which aids in understanding the mechanics of the repaired damaged prestressed concrete girders with externally bonded carbon plates. The bond strength of carbon plate specimens bonded to concrete is determined experimentally by the debond test. The initial crack is introduced in the specimens at one location, namely the plate/adhesive interface. The fracture toughness for debonding is evaluated and expressed as the critical strain energy release rate. A finite element analysis was performed to evaluate the compliance and stress distribution in the debond test …

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Obstacle Detection By A Forward-Looking Sonar Integrated In An Autonomous Underwater Vehicle, Antoine. Martin Jan 2000

Obstacle Detection By A Forward-Looking Sonar Integrated In An Autonomous Underwater Vehicle, Antoine. Martin

Electronic Theses and Dissertations 2000 - 2009

This thesis describes the implementation of a commercially available forward looking sonar (FLS) in an autonomous underwater vehicle (AUV) modified for the task of reactive obstacle detection. Any obstacle lying in the vehicle's path is a potential mission-terminating threat. Inclusion of a forward looking sensor would provide valuable information to the AUV. Threat assessment and navigation would use this information in order to avoid obstacles. The system used for this project is an 8-element transducer FLS at 200 kHz. The sonar control software is done in DOS on a dedicated personal computer in a PC/104 form factor. A variable cell-size …

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Performance Evaluation Of Bluetooth(Tm) Network In The Presence Of Self-Interference, Viraf Rusi Gandhi Jan 2000

Performance Evaluation Of Bluetooth(Tm) Network In The Presence Of Self-Interference, Viraf Rusi Gandhi

Electronic Theses and Dissertations 2000 - 2009

Wireless personal area networks (WPAN) are becoming more and more popular for use by mobile professionals in areas like airports, hotels, or convention centers. The demand for wireless networks is expected to undergo an explosive growth as Bluetooth(TM) capable devices become more and more popular. In such a scenario, it is imperative that designer are aware of the performance characteristics of several Bluetooth(TM) networks operating within the same area. There are several issues that need consideration like security, self-interference and adjacent network interference. The objective of this research is to evaluate the performance of a Bluetooth(TM) network in the presence …

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Potential Attenuation And Anode Current Output Determination Alternatives For Galvanic Anode Cathodic Protection Upon Offshore Pipelines, Keith P. Bethune Jan 2000

Potential Attenuation And Anode Current Output Determination Alternatives For Galvanic Anode Cathodic Protection Upon Offshore Pipelines, Keith P. Bethune

Electronic Theses and Dissertations 2000 - 2009

A recently developed equation governing cathodic polarization attenuation along a pipeline protected by galvanic anodes is first solved. The solution is based upon a numerical finite difference method (FDM). The resulting subroutine computes the polarization along the cathode and the corresponding anode current output based upon the physical design variables and electrochemical properties of the cathode. Validation of this method is accomplished through comparisons with a proven existing method for attenuation prediction, namely the Boundary Element Method (BEM). As both the FDM and BEM solutions are mathematically complex and time consuming, it is then demonstrated that a modified form of …

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Quest For Selfhood In Ursula Le Guin's "The Wizard Of Earthsea" And "The Farthest Shore", Jerry K. Durbeej Jan 2000

Quest For Selfhood In Ursula Le Guin's "The Wizard Of Earthsea" And "The Farthest Shore", Jerry K. Durbeej

Electronic Theses and Dissertations 2000 - 2009

In A Wizard of Earthsea and The Farthest Shore, Ursula K. Le Guin presents the theme of selfhood, of maturity, and of identity through the character heroes of Ged and Arren. Of these two, Ged experiences the quest for selfhood on two levels: first, from boy to manhood, and then from manhood to the awareness of death. Both novels deal with the struggle to create, which is primarily a struggle with self, with one's own powers, and with the need to control these powers and their consequences. I have examined WOE through the perspective of Ged's coming of age, his …

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Public Health Nurse Managers' Perception Of Total Quality Management Initiatives, Carol Ann Wright Jan 2000

Public Health Nurse Managers' Perception Of Total Quality Management Initiatives, Carol Ann Wright

Electronic Theses and Dissertations 2000 - 2009

The purpose of this descriptive study was to explore public health nurse managers' perception of Total Quality Management (TQM) Initiatives in the practice setting. Data sources included interviews with six public health nurse managers. A conceptual model was developed and subsequently analyzed in relationship to Watson's (1988) Human Theory of Caring and Total Quality Management Theory. It was discovered that public health nurse managers described favorable experiences working with TQM implementation and the team process. Although the study's findings did not support a direct relationship between Watson's Theory and congruence with public health nursing practice and TQM initiatives there is …

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Program Completion In Proprietary Schools: A Phenomenological Case Study, Susan Folkman Schulz Jan 2000

Program Completion In Proprietary Schools: A Phenomenological Case Study, Susan Folkman Schulz

Electronic Theses and Dissertations 2000 - 2009

This phenomenological case study was designed to examine factors that relate to student persistence in proprietary schools. The goals were to gain new understandings about retention in proprietary schools, to describe students who persist, and to explain the personal and institutional factors that contribute to a student's decision to persist or leave. Data were collected by (a) interviewing fourteen students and eight employees who were involved in the school during a two-year time frame, (b) conducting formal and informal observations of activities in which the student could participate from the time of application through the time of graduation, and (c) …

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Reaching A New Breed Of Donors: Strategic Communication For Attracting Baby Boomers As Major Donors To Public Institutions Of Higher Education, Katie Gustafson Stephens Jan 2000

Reaching A New Breed Of Donors: Strategic Communication For Attracting Baby Boomers As Major Donors To Public Institutions Of Higher Education, Katie Gustafson Stephens

Electronic Theses and Dissertations 2000 - 2009

Maturing baby boomers are moving into prime giving years and, if history repeats itself, this generation will change the "philosophy of giving." These aging baby boomers will amass significant wealth either through inheritances or their successful businesses. It is therefore critical that professional fundraisers identify how to effectively communicate with the affluent members of this generation to develop them into major donors. Using a qualitative approach through in-depth interviews, this research examines characteristics and traits of baby boomers, identifying seven common themes that can be used to develop communication strategies. It concludes that affluent baby boomers demand accountability from charitable …

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Resiliency Enhancement: A Comparison Of After-School Child Care Programs For Selected Elementary School Students, James F. Martin Jan 2000

Resiliency Enhancement: A Comparison Of After-School Child Care Programs For Selected Elementary School Students, James F. Martin

Electronic Theses and Dissertations 2000 - 2009

The purpose of this study was to determine whether at-risk elementary school students enrolled in an after-school program offering resiliency training would be positively affected both academically and behaviorally. Survey results and literature reviews indicate that the issue of at-risk, neglected, or abused students is the number one issue facing society and has moved it to the forefront of educational prominence. Although there is a substantial amount of literature on the subject, most is not research based and is focused only on the pathology or risk factors with which children have to cope, rather than on controlled, evaluative studies that …

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Representation Of Groups In Quantum Mechanics, Elitza Dimitrova Paskaleva Jan 2000

Representation Of Groups In Quantum Mechanics, Elitza Dimitrova Paskaleva

Electronic Theses and Dissertations 2000 - 2009

In this work, we discuss the conceptual framework of quantum mechanics in the Hilbert space formalism from a group representation point of view. After a brief review of the main results of the theory of groups and their representations, we describe mathematical models of the subject, and show the applications of this theory for getting numerical answers to problems in elementary particle physics.

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Rhetorical Analysis Of A Feminine Style And Feminist Research In Scholarly Communication Journals, Diane Theresa Bifano Jan 2000

Rhetorical Analysis Of A Feminine Style And Feminist Research In Scholarly Communication Journals, Diane Theresa Bifano

Electronic Theses and Dissertations 2000 - 2009

Nine journal articles were analyzed in order to understand gendered composition and what makes writing an article feminine and what makes it masculine. The journals reviewed were Communication Monographs, Communication Theory, Critical Studies in Mass Communication, Human Communication Research, Quarterly Journal of Speech, and Women Studies in Communication. Categories were compiled to include the characteristics of a feminine style in feminist research, and a masculine style in traditional research. This analysis takes a rhetorical approach in order to address a more gender diverse perspective in research. As a result of many published articles reflecting a theme of a "dominant masculinist …

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Rietveld Analysis Of Powder Diffraction Data From A Carbonate Fluorapatite, Hadi Yazdani Moghaddam Jan 2000

Rietveld Analysis Of Powder Diffraction Data From A Carbonate Fluorapatite, Hadi Yazdani Moghaddam

Electronic Theses and Dissertations 2000 - 2009

The mechanism of the carbonate substitution in the apatite structure is unraveled through analysis of Rietveld refinements of powder diffraction data from a single-phase natural carbonate fluorapatite (francolite). The refined values of the P-O bond lengths give a ~1.6% distortion of the phosphate tetrahedron caused by the carbonate substitution. The two bond lengths P-O1 and P-O2 and their corresponding angles on the mirror plane of the phosphate tetrahedron are mainly disturbed by this substitution. A static positional disorder, mainly of the atoms at the tetrahedral sites, is revealed from the temperature dependence of the atomic anisotropic displacement parameters. A model …

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R-Process In Neutrino-Driven Winds, Tatiana Vladimirovna Freund Jan 2000

R-Process In Neutrino-Driven Winds, Tatiana Vladimirovna Freund

Electronic Theses and Dissertations 2000 - 2009

This thesis considers the neutrino-driven wind that arises from a proto-neutron star following a supernova explosion as a possible site for the synthesis of the heavy elements by the r-process. We first review the conditions necessary to obtain an r-process, the constraints on the r-process yields for each event, and show the neutrino-driven winds from proto-neutron stars are suitable for an r-process. We next discuss some of the modifications of the supernova code that were necessary in order to numerically simulate the neutrino-driven winds and steps necessary to initiate these conditions. Three important parameters of the wind characterizing the nucleosynthesis …

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Sediment Phosphorus Fractionation In Calcium Carbonate Sediments Of Northeastern Florida Bay, Robert E Jr Benz Jan 2000

Sediment Phosphorus Fractionation In Calcium Carbonate Sediments Of Northeastern Florida Bay, Robert E Jr Benz

Electronic Theses and Dissertations 2000 - 2009

Different physiochemical processes control phosphorus storage in subtropical versus temperate estuaries; however, few studies are available on sediment phosphorus storage from the subtropics. In this study, solid-phase phosphorus pools of northeastern Florida Bay's sediments were examined by sequential chemical extractions, separating phosphorus into exchangeable, iron-bound, calcium-bound, and residual organic fractions. Calcium-bound phosphorus was the dominant fraction, accounting for approximately 60% of the total phosphorus and 93% of the inorganic phosphorus. Residual organic phosphorus was the second dominant fraction, accounting for 37% of the total phosphorus. In contrast to calcium-bound and residual organic phosphorus, the concentration of iron-bound phosphorus was low, …

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Role Of The Writers In The Ballets Russes, Martine Francoise Pionzio Jan 2000

Role Of The Writers In The Ballets Russes, Martine Francoise Pionzio

Electronic Theses and Dissertations 2000 - 2009

In histories of European Modernism, it is almost axiomatic that the first performance of Serge Diaghilev's Ballets Russes in Paris in 1910 was an aesthetic watershed, culminating earlier experiments by Symbolists and Cubists and forecasting later Modernists' radical syntheses of French arts and literature. Yet the role of French writers in the productions of the Ballets Russes has been neglected by literary critics and historians. Nijinski's choreography of L'Apres-midi d'un Faune stands as the theatrical culmination of Mallarme's poetic. The ballets Sheherazade and The Rite of Spring find a counterpart in the literary work of their admirer Proust, and Cocteau's …

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Sally Potter: A Filmmaker's Use Of Deconstruction In Film, Diane Susan Honour Jan 2000

Sally Potter: A Filmmaker's Use Of Deconstruction In Film, Diane Susan Honour

Electronic Theses and Dissertations 2000 - 2009

Hollywood films have a great impact on many countries in the world. Fictional cinema tends to predominantly follow a particular form of narrative which is used beyond the United States. British film tends to use this format but there are filmmakers who prefer to take an alternative route to creating film. Theoretical systems of postmodernism and poststructuralism, and textual analysis, reveal that the body of films by Sally Potter: Thriller, The Gold Diggers, The-London Story, Orlando and The Tango Lesson demonstrate deconstruction to varying degrees. Analysis indicates that Potter's deconstructive films speak from different perspectives, draw attention to stereotypical representations …

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Senescence- And Death-Related Alterations Of Chlorophylls And Carotenoids In Marine Phytoplankton, Lei Liu Jan 2000

Senescence- And Death-Related Alterations Of Chlorophylls And Carotenoids In Marine Phytoplankton, Lei Liu

Electronic Theses and Dissertations 2000 - 2009

Fresh and aged unispecific samples have been analyzed using IP-RPHPLC and PDA in order to reveal the chlorophylls and carotenoids alterations during senescence and death. Aging studies showed that cyanobacterial chlorophyll- a was destroyed faster than carotenoids in room oxic conditions. The reverse was found for the other eukaryotic species. Species with high chlorophyllase activity produced phytol free chlorophyll derivatives during death. The rate of chlorophyll-a destruction was; room oxic > room anoxic > cold anoxic. Pyropheophorbide-a was often the final product of type-I chlorophyll-a degradation. The conversion from fucoxanthin to fucoxanthinol was observed. Chlorophyll-c was found to be destroyed faster than …

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Sedimentary Characteristics Of Sugar Ridge And Their Implications For Sediment Transport In Lake Okeechobee, Florida, Matthew Joel Badiali Jan 2000

Sedimentary Characteristics Of Sugar Ridge And Their Implications For Sediment Transport In Lake Okeechobee, Florida, Matthew Joel Badiali

Electronic Theses and Dissertations 2000 - 2009

Lake Okeechobee is one of the largest lakes in the United States, yet its formation, circulation, and geomorphology are not well known. The ridges that occur on the eastern and northern shorelines of the lake have not been studied. Sugar Ridge is the closest ridge to the lake on the central part of the eastern shoreline. It is composed of medium- to fine-grained quartz (sugar sand) sediments in a dynamic form, superimposed upon organic peat and muck layers. It contains centimeter-scale bedding that exhibits many sedimentary structures typical of an accretionary barrier beach. Wind waves are considered the most likely …

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Stability Study Of Octadecylalumina Columns For Use In Hplc, James Vincent Goldberg Jan 2000

Stability Study Of Octadecylalumina Columns For Use In Hplc, James Vincent Goldberg

Electronic Theses and Dissertations 2000 - 2009

Chromatographic stability studies of an alumina-based reversed phase, ODA, stationary phase were performed. These studies involved monitoring the chromatographic performance of columns packed with the ODA phase after separate, continuous treatment with aqueous solutions of trifluoroacetic acid and sodium hydroxide over a period of several weeks. Chromatographic performance of the ODA columns undergoing treatment with these mobile phases was evaluated by comparing changes in chromatographic capacity factors, resolutions, plate numbers, and peak asymmetries of a test mixture consisting of uracil, phenol, aniline, methyl benzoate, m-toluidine, N,N-dimethylaniline, and toluene. The results indicate that the alumina-based ODA phase is stable under acidic …

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