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2001

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Digital Acoustic Communications Using Decision Directed Learning, Jochen Raoul Alleyne Jan 2001

Digital Acoustic Communications Using Decision Directed Learning, Jochen Raoul Alleyne

Electronic Theses and Dissertations 2000 - 2009

This document serves as a dissertation for the Doctor of Philosophy in Ocean Engineering degree at Florida Atlantic University's Department of Ocean Engineering. This dissertation documents the design, development, and performance analysis of an acoustic receiver system that incorporates a decision directed learning filter for acoustic multi-phase shift keying signals. The system makes use of advanced signal processing, inclusive of spatial diversity and decision directed learning techniques in order to decode digital acoustic data. Error correcting techniques are also employed as well as methods of analyzing the efficiency of the system.

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Design And Implementation Of An Adaptive Control System For Active Noise Control, Adrien Eric Duprez Jan 2001

Design And Implementation Of An Adaptive Control System For Active Noise Control, Adrien Eric Duprez

Electronic Theses and Dissertations 2000 - 2009

This thesis describes the design and implementation of an adaptive control system for active noise control. The main approaches available for implementing an active noise controller are presented and discussed. A Least Mean Squares (LMS) based algorithm, the Filtered-X LMS (FXLMS) algorithm, is selected for implementation. The significance of factors, such as delays, system output noise, system complexity, type and size of adaptive filter, frequency bandwidth, etc..., which can limit the performance of the adaptive control, is investigated in simulations. For hardware implementation, a floating-point DSP is selected to implement the adaptive controller. The control program and its implementation on …

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Design Of A Signaling Gateway To Interoperate H.323 And Sip Protocols, Hamid. Akbarian Jan 2001

Design Of A Signaling Gateway To Interoperate H.323 And Sip Protocols, Hamid. Akbarian

Electronic Theses and Dissertations 2000 - 2009

This thesis proposes a design for a signaling gateway to address the issues of interoperability between H.323 and SIP. The two IP Telephony standards currently compete for the dominance of IP telephony protocols. We investigate and study these two protocols in terms of interoperability. The question central to this thesis is the issue of interoperability between H.323 and SIP. A signaling gateway model is proposed and designed to address and solve this issue. The proposed model includes Call Initialization, Call Setup and Control, Capability Exchange and Call Termination, which are the four fundamental features supported by H.323 and SIP for …

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Dynamics Of Pre-Columbian Spondylus Trade Across The South American Central Pacific Coast, Alexander Javier Martin Jan 2001

Dynamics Of Pre-Columbian Spondylus Trade Across The South American Central Pacific Coast, Alexander Javier Martin

Electronic Theses and Dissertations 2000 - 2009

This thesis provides an analysis of the archeological remains of Spondylus in the Central Pacific Coast of South America. The frequency of occurrence, spatial distribution and cultural context are compared both geographically and temporally to establish the reason for the trade of Spondylus, what form this exchange took through what routes it moved, and how it evolved through time. The sample strongly supports a scenario in which Spondylus trade with Peru stayed relatively small scale and unsophisticated through most of its existence as a series of informal commercial transactions by neighboring communities. It is not until Moche V in the …

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Effects Of Fragment Salvage Size And Light Intensity In Closed System Culture Of The Atlantic Ocean Coral Species, Acropora Cervicornis, Christopher John West Jan 2001

Effects Of Fragment Salvage Size And Light Intensity In Closed System Culture Of The Atlantic Ocean Coral Species, Acropora Cervicornis, Christopher John West

Electronic Theses and Dissertations 2000 - 2009

Acropora cervicornis is an important Caribbean shallow water reef building coral species which is currently federally protected, and a candidate for the U.S. endangered species list. A. cervicornis is an excellent candidate for fragment salvage or reef transplantation because it exhibits rapid growth rates, can be successfully fragmented, and is tolerant to a wide range of light intensities. The success of restoration efforts for A. cervicornis is dependent upon the complete understanding of its growth parameters. This study documents the culture conditions for growing A. cervicornis in a closed system, and the effects of fragment size and light intensity on …

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Examination Of The Relationship Between Groundwater Levels And The Everglades Crayfish, Procambarus Alleni, April E. Huffman Jan 2001

Examination Of The Relationship Between Groundwater Levels And The Everglades Crayfish, Procambarus Alleni, April E. Huffman

Electronic Theses and Dissertations 2000 - 2009

Florida wetlands are subject to alteration of ecological function by draining, dredging, filling, and hydrologic modification. Unlike other sources, detecting an ecological response to hydrologic alterations can be subtle and difficult to quantify. To develop wetland hydrologic protection criteria, a hydrologically sensitive indicator species was needed. Everglades crayfish (Procambarus alleni), a trophically critical element of southern Florida wetlands, were evaluated as a potential indicator species. P. alleni excavates temporary burrows to survive Florida's dry season. Burrow lengths were measured through a dry season. Regression analysis was used to determine if burrow depths changed as water levels changed. The relationship was …

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Evaluation On Two Plastic Materials For Vo's Ankle Implant, Jetro. Paul Jan 2001

Evaluation On Two Plastic Materials For Vo's Ankle Implant, Jetro. Paul

Electronic Theses and Dissertations 2000 - 2009

The purpose of this study is to evaluate two plastic materials, PMMA and UHMWPE, by using a material testing device "Robotic arch cycle motor" to imitate a normal body weight of 150 lbs. on Vo's artificial ankle implant. In this experiment, there are 82 sets of a three hours for UHMWPE, and 34 sets for PMMA have been applied to these materials with maintaining of 165 lbs. or 110% of a normal body weight person. In addition, timer, saline solution 0.5%, and thermometer are employed to set up a vivo human environment to maxim the accuracy dada collection. Number of …

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Evaluation Of Orientation And Formulation Effects On The Impedance Of Naval Special Hull Treatments, Kristina Marie Mann Jan 2001

Evaluation Of Orientation And Formulation Effects On The Impedance Of Naval Special Hull Treatments, Kristina Marie Mann

Electronic Theses and Dissertations 2000 - 2009

This research used Electrochemical Impedance Spectroscopy (EIS) as a non-destructive technique to evaluate coating performance and determine the electrochemical characteristics of Special Hull Treatments (SHT). The evaluation of the SHT system provided information on its corrosion resistance and cathodic protection-influencing characteristics. The coating's impedance was analyzed while exposed to ambient versus 4.5 MPa pressures and immersion times of 1 to 9 days in seawater. Eleven specimen types were evaluated based on coating seam orientation and composition. The data support the conclusion that there was no effect on impedance values and phase shifts due to orientation, formulation, pressure values or immersion …

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Experimental Analysis Of The Auv Acoustic Signature, Susan Eileen Frandsen Jan 2001

Experimental Analysis Of The Auv Acoustic Signature, Susan Eileen Frandsen

Electronic Theses and Dissertations 2000 - 2009

This thesis presents an experimental analysis of the acoustic signature of an Ocean Explorer class AUV. The experimental analysis consists of three parts. The first part reports the measurements performed in an open water environment at NSWC in Lake Pend Oreille, Idaho. The second part reports on measurements performed at the FAU test tank on a mock model of the AUV and the third part reports the measurements also in the FAU test tank of the AUV under typical operating conditions. The model measurement results were also used to verify the prediction capabilities of a numerical FE model of the …

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Enthymemes In Magazine Advertisements: An Analysis Of Oneida Silverware Ads From 1900 To 1990, Estefany. Mata Jan 2001

Enthymemes In Magazine Advertisements: An Analysis Of Oneida Silverware Ads From 1900 To 1990, Estefany. Mata

Electronic Theses and Dissertations 2000 - 2009

Magazine advertisements use various techniques in order to entice consumers to buy a product. One of those techniques is the use of enthymemes. I analyze the rhetorical effect of enthymemes in a select number of Oneida ads beginning in 1900 and continuing through the 1990s. This chronological progression demonstrates the gradual development of what I term, an enthymematic magazine ad. In this type of advertisement, the headline and the image work together to evoke certain emotions in readers leaving them to complete the message by providing information that is well-known by the target audience. The added effort on the part …

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Gender Identity Effects On School Outcomes, Medeia. Sharif Jan 2001

Gender Identity Effects On School Outcomes, Medeia. Sharif

Electronic Theses and Dissertations 2000 - 2009

Children's (Grades 4--8) gender identity was examined as a predictor of academic self-concept, achievement, attitudes, and conduct. Three gender identity components were assessed: (a) feelings of being typical of one's gender, (b) feeling content with one's gender assignment, and (c) feeling pressured to conform to one's gender. It was expected that gender typicality and contentedness would be positive influences, whereas felt pressure would be a negative influence. Results were partially supportive, but showed that relationships varied substantially with child gender and the gender-normative relevance of a given academic domain (math vs. English). It was concluded that gender identity factors have …

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Factors Influencing Face/Core Crack Propagation In Pvc Foam Core Sandwich, Gillmer Manuel Viana Jan 2001

Factors Influencing Face/Core Crack Propagation In Pvc Foam Core Sandwich, Gillmer Manuel Viana

Electronic Theses and Dissertations 2000 - 2009

Fracture toughness of a large range of PVC foam cores was determined using the single edge notch bend (SENB) specimen. Debond fracture toughness for sandwich specimens with the same foam cores was characterized using the TSD specimen. Examination of the crack propagation path in specimens with adequate face/core adhesion revealed that the debonding process occurred by crack propagation in the core, near the face/core interface. It was observed that the debond toughness and core toughness are of similar magnitude although the debond toughness exceeds the core toughness, especially for the higher density cores. Possible reasons for the elevation of the …

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Gapless Alignment Revisited, Elizabeth Anne Raley Jan 2001

Gapless Alignment Revisited, Elizabeth Anne Raley

Electronic Theses and Dissertations 2000 - 2009

The purpose of sequence alignment is to detect mutual similarity, characterized by the so-called "alignment score", between sequences compared. To quantitatively assess the confidence level of an alignment result requires the knowledge of alignment score statistics under a certain null model and is the central issue in sequence alignment. In this thesis, the score statistics of Markov null model were revisited and the score statistics of non-Markov null model were investigated for two state-of-the-art algorithms, namely, the gapless Smith-Waterman and Hybrid algorithms. These two algorithms were further used to find highly related signals in unrelated sequences and in weakly related …

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False Reflections: Appearance Esteem Attacks In Advertising In "Cosmopolitan", "Working Woman", "Gq", And "Maxim", Rhonda Ilene Trust Jan 2001

False Reflections: Appearance Esteem Attacks In Advertising In "Cosmopolitan", "Working Woman", "Gq", And "Maxim", Rhonda Ilene Trust

Electronic Theses and Dissertations 2000 - 2009

This thesis examines the advertisements in Cosmopolitan, Working Woman, Maxim, and GQ that qualify as Appearance Esteem (AE) ads. AE ads attack women and/or men in terms of self esteem based in appearance. A content analysis combined with a textual analysis produced results which show that women are attacked more directly, and more personally than men. The results demonstrate that the AE ads help to establish narrow standards of appearance for both women and men in society, however it is argued that these messages may lead to negative health behaviors, lower self confidence, and an unhealthy obsession to maintain one's …

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Function Of Leadership Styles And Personality Types Among City Managers: An Analysis Of "Fit" And Tenure, George Lafayette Ii Hanbury Jan 2001

Function Of Leadership Styles And Personality Types Among City Managers: An Analysis Of "Fit" And Tenure, George Lafayette Ii Hanbury

Electronic Theses and Dissertations 2000 - 2009

This dissertation investigated the problem of short-term tenure of city managers as an indicator of the appropriate "fit" between the personality types and leadership styles of city managers and the city councils they serve. Moving from theory to practice in public administration, this research presents findings, not offered to date, based on a rigorous, nation-wide study of city managers. The study focuses on years of service - tenure of city managers as a function of the city managers' personality types, leadership styles, and perceptions of support from their city councils. Results of the study were generated through an analysis of …

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Gender, Power, Interpellation And Body Image: Creating Consumer Subjectivities In "Mode Magazine", Danielle D. Bolla Jan 2001

Gender, Power, Interpellation And Body Image: Creating Consumer Subjectivities In "Mode Magazine", Danielle D. Bolla

Electronic Theses and Dissertations 2000 - 2009

Images of beauty are social constructs that exist in historical contexts and are subject to change. A correlation may be made between social inequality and how images of beauty are used to maintain the status quo. Mode Magazine is an unique fashion magazine that depicts women of different sizes. This thesis examines how "realistically sized" images of women are represented, and whether representation challenges beauty hegemony. It critically examines both visual and non-visual textual representations using Hall's encoding/decoding model to discern potential meanings. It evaluates advertisements and articles for how women are interpellated by the text. It concludes by asserting …

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German Travel Behavior And Its Influence On International Tourism Trends, Mary Katherine Zappi Jan 2001

German Travel Behavior And Its Influence On International Tourism Trends, Mary Katherine Zappi

Electronic Theses and Dissertations 2000 - 2009

Germany, with respect to tourism departures, spending, and propensity, is a very strong market in the global tourism arena. German tourism has been increasing steadily over the past few decades, following the world trend. The objective of this paper is to assess the influence of Germans on world patterns during this era of tourism growth. The central focus is to determine to what extent the Germans act as allocentric trendsetters in world patterns. Arrival ranks of the most popular current and historic destinations of world tourists and Germans were compared, and destination choices were analyzed with respect to tourist behavior …

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Hildegard Of Bingen: An Analysis Of Feminine Images In The Songs To Mary, Virgins And Widows, Beverly R. Lomer Jan 2001

Hildegard Of Bingen: An Analysis Of Feminine Images In The Songs To Mary, Virgins And Widows, Beverly R. Lomer

Electronic Theses and Dissertations 2000 - 2009

Hildegard of Bingen, while outwardly remaining within the boundaries of religious and societal orthodoxy, redefined the nature of woman into a more positive one by creatively reworking conventional viewpoints such as the value of humility, virginity and divine motherhood. Her ideas were most clearly expressed in the Symphonia songs dedicated to Mary, virgins and widows. In this paper, the ten songs to Mary, in which Hildegard most directly restates the feminine, are analyzed in terms of text/music relationships as they relate to this theme. The remaining six pieces for Mary, two of the songs to virgins and the one for …

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High-Speed Acoustic Communication In Shallow Water Using Spatio-Temporal Adaptive Array Processing, Pierre-Philippe Beaujean Jan 2001

High-Speed Acoustic Communication In Shallow Water Using Spatio-Temporal Adaptive Array Processing, Pierre-Philippe Beaujean

Electronic Theses and Dissertations 2000 - 2009

A novel method of achieving stable high-speed underwater acoustic communication with a fairly low-complexity of implementation is proposed. The proposed approach is to split the space and time processing into two separate sub-optimal processes. As a result, processing complexity is significantly reduced and the instabilities associated with large tap vectors at large time-frequency spread products are reduced. The proposed space-time signal processing method utilizes a different beamformer optimization strategy compared to the time domain optimization strategy. This allows to separately adjust the adaptation parameters for the spatial and temporal characteristics of the signal, which have vastly different requirements. The time …

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Hiro Of The Platonic: Neal Stephenson's "Snow Crash", Carl John Boehm Jan 2001

Hiro Of The Platonic: Neal Stephenson's "Snow Crash", Carl John Boehm

Electronic Theses and Dissertations 2000 - 2009

In The Republic, Plato constructs the ideal city-state built on the principle of justice. Plato establishes an urban utopia with a set of morals through which the citizen helps the state and the state helps the citizen. Centuries after Plato's Republic, Neal Stephenson presents in Snow Crash, a cyberpunk adventure, a virtual city known as the Metaverse. Hiro Protagonist, as his name implies, defends his virtual city from a threatening virus in the same way that a citizen in Plato's Republic would protect the city-state. An analysis of Snow Crash using ideas from The Republic reveals the "hacker" to be …

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Green Goddess Returns: Batman's Poison Ivy As A Symbol Of Emerging Ecofeminist Consciousness, John-David. Checkett Jan 2001

Green Goddess Returns: Batman's Poison Ivy As A Symbol Of Emerging Ecofeminist Consciousness, John-David. Checkett

Electronic Theses and Dissertations 2000 - 2009

The Interdisciplinary field of ecofeminism is based upon the premise that important connections exist between women and non-human nature, and that both have suffered abuses, presently and historically, from people operating from a patriarchal conceptual framework. A large and important part of ecofeminism is ecofeminist spirituality, which departs from Euro-Western, patriarchal, monotheistic religions in its positions on hierarchy and dualistic thinking. Many of the ideals of both ecofeminism and ecofeminist spirituality are embodied in the popular culture figure known as Poison Ivy. She projects the image of the power of women and nature, which includes the powers of death as …

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Hydrodynamic Analysis Of An Underwater Body Including Free-Surface Effects, Christophe. Puaut Jan 2001

Hydrodynamic Analysis Of An Underwater Body Including Free-Surface Effects, Christophe. Puaut

Electronic Theses and Dissertations 2000 - 2009

Boundary integral algorithms are developed to analyze three-dimensional inviscid fluid-body interactions, including the nonlinear free-surface effects. Hydrodynamic coefficients are computed for various body geometries, some corresponding to that of small underwater vehicles, in deep waters and near the free surface. The fully nonlinear unsteady wave-radiation problem corresponding to forced submerged-body oscillations and forward translation are solved using the mixed Eulerian-Lagrangian formulation (Longuet-Higgins and Cokelet, 1976). By implementing the leading-order free-surface conditions on the calm surface, linear time-domain solutions are also obtained. The nonlinear and linear results are compared to quantify the nonlinear free-surface effects. Linear frequency-domain analysis of the wave-body …

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Identification Strategies And Unobtrusive Control In Organizational Change Initiatives: A Textual Analysis Of Corporate Newsletters, Laurie A. Glover Jan 2001

Identification Strategies And Unobtrusive Control In Organizational Change Initiatives: A Textual Analysis Of Corporate Newsletters, Laurie A. Glover

Electronic Theses and Dissertations 2000 - 2009

To be successful, organizations that undertake a large-scale planned change initiative must maintain employee commitment and loyalty to the organization. Identification with the organization can support that objective and is crucial in changing organizations when managers often introduce different cultural assumptions, values, and norms than those held by the organization's members. Employee identification with the organization is also pivotal in the employee's decision making process. This study analyses a representative sample of an organization's newsletter published during a reengineering project. Identification strategies of common ground, the assumed we, antithesis and unifying symbols are used as the foundation for analysis. Results …

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Image Rectification/Registration From A Project Management Perspective: A Review Of Various Software, James Peter Gammack-Clark Jan 2001

Image Rectification/Registration From A Project Management Perspective: A Review Of Various Software, James Peter Gammack-Clark

Electronic Theses and Dissertations 2000 - 2009

The project manager has much to deliberate when choosing a software package for image rectification/registration. He/she must be able to perform a cost analysis evaluation of the packages in question, and determine which package will provide the highest level of positional accuracy. Objective and subjective analysis of six software packages, ArcView Image Analysis, GeoMedia Pro, Arc/Info 8.1, ERMAPPER, ENVI and Idrisi 3.2, and their multiple products (polynomials and triangulations) provide the basis with which the project manager may attain this goal. He/she is familiarized with the user interface of each package, through detailed step-by-step methodology. Positional accuracy of each product …

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Implementation Of A Three-Group Classification Model Using Case-Based Reasoning, Huiming. Song Jan 2001

Implementation Of A Three-Group Classification Model Using Case-Based Reasoning, Huiming. Song

Electronic Theses and Dissertations 2000 - 2009

Reliability is becoming a very important and competitive factor for software products. Software quality models based on software metrics provide a systematic and scientific way to detect software faults early and to improve software reliability. Classification models for software quality usually classify observations using two groups. This thesis presents a new algorithm for classification using three groups, i.e., Three-Group Classification Model using Case Based Reasoning. The basic idea behind the algorithm is that it uses the commonly used two-group classification method three times. This algorithm can be implemented with other techniques such as logistic regression, classification tree models, etc. This …

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Implementation Of A Fuzzy-Logic-Based Trust Model, Yuanhui. Zhao Jan 2001

Implementation Of A Fuzzy-Logic-Based Trust Model, Yuanhui. Zhao

Electronic Theses and Dissertations 2000 - 2009

In the last 10 years, due to the rapid developments in computers and Internet, the Electronic Commerce has advanced significantly. More and more companies have shifted their businesses activities to the Internet. However, the popular use of ecommerce has also raised serious security problems. Therefore developing security schemes has become a key issue both in the academic as well as industrial research. Since the Internet is open to the public, the associated security issue is challenging. A good security strategy should not only protect the vendors' interest, but also enhance the mutual trust between vendors and customers. As a result, …

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Impact Of Electronic Commerce (E-Commerce) On Sales Tax Revenue, Jack. Pinkowski Jan 2001

Impact Of Electronic Commerce (E-Commerce) On Sales Tax Revenue, Jack. Pinkowski

Electronic Theses and Dissertations 2000 - 2009

This study deals with the impact of electronic commerce (e-commerce) on sales tax revenues in Florida. It uses econometric modeling to forecast taxable retail sales and compares two models. Based on the separation of consumer sales (durables and nondurables) from total taxable sales, changes associated with sales suitable for electronic commerce are scrutinized. Results show that only the model that focuses on consumer sales, not the model for total sales, documents a substantial difference in forecast reliability. Forecasts for 1995--1999, the period of inception of electronic commerce, are compared to forecasts for 1989--1994. The errors in forecast increased three-fold both …

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Implementation Of The Ocean Explorer Auv Dock For Use With The Morpheus Auv, Joseph Clayton Jr Lambiotte Jan 2001

Implementation Of The Ocean Explorer Auv Dock For Use With The Morpheus Auv, Joseph Clayton Jr Lambiotte

Electronic Theses and Dissertations 2000 - 2009

This report highlights important aspects of previous work with the Ocean Explorer (OEX) autonomous underwater vehicle (AUV) docking system as a background. This includes short baseline navigation, the Tracking Controller, Mechanical aspects of the dock, and results of testing of the docking system for the OEX Details of the Morpheus AUV are then given along with the major concerns faced in trying to adapt the OEX dock to the Morpheus. Using computer simulation, the reaction of the Morpheus when it impacts the dock is explored and the results of at sea testing (the collision of the vehicle and the dock) …

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Labor Approach To The Development Of The Self Or "Modern Personality": The Case Of Public Education, Paul C. Mocombe Jan 2001

Labor Approach To The Development Of The Self Or "Modern Personality": The Case Of Public Education, Paul C. Mocombe

Electronic Theses and Dissertations 2000 - 2009

Max Weber, Karl Mannheim, and Karl Marx suggested that there is a relationship between economic and political institutions and that behaviors and attitudes are influenced by this. Viewing this postulate as a conception which posits the economic mode of production as the locus of causality for culture, this examination of capitalism as culture, investigates how education and its pedagogical techniques, as a means of "enculturation," reflects the capitalist economic mode of production. Building on the theoretical notions in the Sociology of knowledge and Structuralism, this hermeneutical analysis discusses how pedagogical techniques and curriculum arrangements of public schools in capitalist societies …

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Impact Of National Culture And Other National-Level Indicators On Information Technology (It) Diffusion, Kallol Kumar Bagchi Jan 2001

Impact Of National Culture And Other National-Level Indicators On Information Technology (It) Diffusion, Kallol Kumar Bagchi

Electronic Theses and Dissertations 2000 - 2009

The contribution of this research is in positing that national level indicators matter in IT adoption and diffusion and providing empirical support for this theory. National level indicators are scantily represented in IT adoption or diffusion theory. Empirical results on this are almost absent in literature. Diffusion theory models of Rogers (1985) and Kwon and Zmud (1987) do not address national level attributes. National level indicators like culture, economy, institutional factors, physical distance from the innovating nation, IT infrastructure etc., could all be relevant to IT diffusion. Three types of major models (models based on adoption and growth rate factors …

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