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Articles 20311 - 20340 of 20548
Full-Text Articles in Entire DC Network
Trailing Edge Noise Propagation Through A Cascade Of Blades, Charlie Desire Roy
Trailing Edge Noise Propagation Through A Cascade Of Blades, Charlie Desire Roy
Electronic Theses and Dissertations 2000 - 2009
Aircraft engine fan trailing edge noise prediction is very challenging. To achieve a better understanding of the physics of the propagation problem, the fan has been modeled as an infinite cascade of blades and acoustic monopoles and dipoles have been placed at the trailing edges. The flow has been computed using the Transonic Small Disturbance equation. As soon as the critical Mach number is exceeded by the free stream, a supersonic region that joins two consecutive blades appears. It completely blocks the sound and limits the study to entirely subsonic flow. In this type of flow, a sound propagation simulator …
Three-Dimensional Finite Element Model For The Biomechanical Analysis Of Total Ankle Replacement, Ha Van Vo
Three-Dimensional Finite Element Model For The Biomechanical Analysis Of Total Ankle Replacement, Ha Van Vo
Electronic Theses and Dissertations 2000 - 2009
The artificial ankle joint implant has been developed since 1970 after the relatively successful total hip and knee arthroplasty. The main goal of ankle replacement is to eliminate pain and preserve joint motion. Unfortunately, total ankle replacement (TAR) has not been effective as implant of other joints. Recently, published studies of early series showed that the newer second-generation ankle prosthesis have been improved with time. However, only one of the three current ankle designs is allowed by FDA to be used widely in the U.S. This study provides a new ankle design with an advanced approach in designs, biomechanical rationale, …
Trade Dynamics In South Florida During The Archaic And Glades Periods: The Commerce Of Shark Teeth, Patricia A. Seymour
Trade Dynamics In South Florida During The Archaic And Glades Periods: The Commerce Of Shark Teeth, Patricia A. Seymour
Electronic Theses and Dissertations 2000 - 2009
The purpose of the proposed investigation is a multi-faceted study providing the opportunity to (a) examine the transverse Glades waterways within Broward County, Florida as trade networks during precolumbian times, (b) critically examine the importance of shark teeth as a commodity in the prehistoric commerce of south Florida, and (c) explore the utility of geographic information systems (GIS) in the resolution of the archaeological questions noted above. As suggested by the above statement, this study will focus on the dynamics involved in the distribution of shark teeth throughout archaeological sites in Broward County noting whether there are noticeable changes in …
Teckno Culture: A Context For The Hybridization Of Belief Systems, Bryan R. Rill
Teckno Culture: A Context For The Hybridization Of Belief Systems, Bryan R. Rill
Electronic Theses and Dissertations 2000 - 2009
Teckno (or Rave) as a musical movement has rapidly spread across the globe. The youth culture that has developed has been sorely misunderstood by academia and media, often labeled as narcissistic, hedonistic, and lacking meaning. Contrary to these perceptions, Teckno culture is a collage of meanings. Long-term participation in Teckno culture has resulted in the development of new hybridized belief systems for many of the participants. Hybridization occurs as a result of exposure to multiple religious and mystic beliefs while in altered states of consciousness. This thesis explores the characteristics of these hybrids and identifies the seven elements that create …
Visual Spectral Sensitivity Of Loggerhead (Caretta Caretta L.) And Leatherback (Dermochelys Coriacea L.) Hatchlings: A Comparative Study, Judith P. Gocke
Visual Spectral Sensitivity Of Loggerhead (Caretta Caretta L.) And Leatherback (Dermochelys Coriacea L.) Hatchlings: A Comparative Study, Judith P. Gocke
Electronic Theses and Dissertations 2000 - 2009
In the ocean, lighting varies with habitat; the eye's spectral sensitivity must vary with visual ecology. Green turtles are the only sea turtle whose spectral sensitivity has been studied. Loggerheads and leatherbacks see visible light between 340 and 700 nm. However, the wavelengths detected with the greatest sensitivity by both species are those best transmitted at the specific depths where food, mates and predators are likely to be encountered. Both species have trichromatic vision, but the species differ in the concentration and peak sensitivity of each visual pigment resulting in either a broadly tuned (loggerhead) or finely tuned (leatherback) spectral …
Effects Of Flow On The Taxonomic Composition Of Everglades Periphyton, Barbara A. Hiaasen
Effects Of Flow On The Taxonomic Composition Of Everglades Periphyton, Barbara A. Hiaasen
Electronic Theses and Dissertations 2000 - 2009
Analysis of the relationship of velocity to taxonomic composition of periphyton-based stormwater treatment areas, in conjunction with other metrics, is a valuable tool for evaluating the phosphorus removal efficiency of this Everglades restoration advanced treatment technology. Periphyton taxonomic composition, biomass, water and tissue total phosphorus (TP), pH, and temperature were analyzed in three slow velocity (0.22 cm s-1) and three fast velocity (2.0 cm s-1) mesocosms. Loading rate, retention time and surface area were kept constant, with velocity the single variable between treatments. There was no significant difference in taxonomic composition, water TP, tissue TP, or temperature between the slow …
Electronic Structure Calculations For Alloys Using The Polymorphous Coherent Potential Approximation, Silvia Pella
Electronic Structure Calculations For Alloys Using The Polymorphous Coherent Potential Approximation, Silvia Pella
Electronic Theses and Dissertations 2000 - 2009
The Polymorphous Coherent Approximation (PCPA) plays the central role in this study. The PCPA represents an extension of the Coherent Potential Approximation (CPA) in the sense that it treats an alloy model in which all of the atoms are allowed to have distinct charges and potentials. It makes use of the supercells that contain hundreds of atoms. The Madelung potentials at all sites are calculated exactly. The present calculations demonstrate the advantages of the PCPA over the CPA in explaining experiments that depend critically on the charge transfer in an alloy.
Energy Metabolism And Slow Skeletal Troponin I Phosphorylation In Cardiac Troponin I Null Mouse Heart, Yuanyuan Jia
Energy Metabolism And Slow Skeletal Troponin I Phosphorylation In Cardiac Troponin I Null Mouse Heart, Yuanyuan Jia
Electronic Theses and Dissertations 2000 - 2009
Troponin I (TnI) plays an important role in cardiac muscle contraction. Two TnI genes (cardiac and slow skeletal TnI) are predominantly expressed in the heart. In cTnI knockout mice, myocardial TnI deficiency results in a diastolic dysfunction and a sudden death in homozygous mutants. In the present studies, energy metabolism has been analyzed in myocardial cells from cTnI null hearts. Our results have demonstrated that damaged relaxation and increased Ca2+-independent force production in cTnI null hearts stimulated myofibril MgATPase activities accompanied by the increase of mitochondria quantity and ATPase activities. In addition, an increase of ssTnI phosphorylation level has been …
Enhanced Ticket-Based Qos Routing Protocols In Ad Hoc Networks, Chun-Jung Huang
Enhanced Ticket-Based Qos Routing Protocols In Ad Hoc Networks, Chun-Jung Huang
Electronic Theses and Dissertations 2000 - 2009
This thesis describes QoS routing techniques in ad hoc networks. QoS routing is to find paths between given source and destinations that fulfill a set of QoS requirements. QoS routing in ad hoc networks is a challenging problem due to the dynamical nature of ad hoc networks and the complexity of the QoS routing problem. Ticket-based probing scheme (TBP) is a creative approach to solve QoS routing problem, however, its proactive nature makes it deficient and unscalable. In this thesis, we first present the adaptive ticket-based routing protocol (ATBR), a proactive protocol enhanced from TBP, by introducing a new imprecise …
Envirotronically Speaking: A Case Study Of Dis-Identification In Online Industrial And Oppositional Discourse About Global Warming, Mark A. Kattoura
Envirotronically Speaking: A Case Study Of Dis-Identification In Online Industrial And Oppositional Discourse About Global Warming, Mark A. Kattoura
Electronic Theses and Dissertations 2000 - 2009
Corporations such as Exxon Mobil and environmentalist groups such as Greenpeace realize the potential of the Internet from a public relations standpoint. They have taken their industrial and oppositional discourse about global warming online through campaigns meant to appear motivated by grassroots impulses but which, as in the case of Exxon Mobil, are often motivated by profit. This study combines rhetorical and media studies approaches in performing semiotic analysis of online texts related to global warming. It concludes that corporations and environmentalists are making innovative use of this new medium in communicating their respective ideologies, but that corporate texts reflect …
Expression Of Tear Lipocalin And Mmps In The Lacrimal Gland And Their Implication In Dry Eye Disease, Smitha J. Kota
Expression Of Tear Lipocalin And Mmps In The Lacrimal Gland And Their Implication In Dry Eye Disease, Smitha J. Kota
Electronic Theses and Dissertations 2000 - 2009
Tear lipocalin is a member of the lipocalin superfamily. Homologues have been identified in different species. In this study 18kDa lipocalin protein was identified in lacrimal fluid from New Zealand white rabbits. Densitometric analysis revealed that lacrimal fluid from sexually mature female showed significantly higher expression of lipocalin than the sexually mature male. The sexually mature rabbits had higher expression of lipocalin compared to the juveniles. However no significant differences in expression of lipocalin was detected between the juvenile male and female rabbits. Matrix metalloproteinses are members of the metzincin family. Gelatinases (MMP-2 & MMP-9) are known to degrade the …
Financial Prediction Using Time Series, Arunkumar. Srinivasan
Financial Prediction Using Time Series, Arunkumar. Srinivasan
Electronic Theses and Dissertations 2000 - 2009
This thesis discusses the implementation of a feed forward NN using time series model to predict the sudden rise or sudden crash of a company's stock prices. The theory behind this prediction system is Pattern recognition. Pattern recognition techniques for time-series prediction are based on structural matching of the current state of the time-series with previously occurring states in historical data for making predictions. This study reports the result of attempts to predict the Motorola stock price index using artificial neural networks (ANN). Daily data from January 1999 to December 2001 were taken from the NYSE. These data are classified …
Female Multiple Mating And Sperm Storage In An Arctiid Moth: Utetheisa Ornatrix, Ingrid M. Curril
Female Multiple Mating And Sperm Storage In An Arctiid Moth: Utetheisa Ornatrix, Ingrid M. Curril
Electronic Theses and Dissertations 2000 - 2009
Utetheisa ornatrix females mate with many different males, but only one of their mates generally sires the progeny. To investigate the mechanism of this sperm precedence, the sperm contained within the spermatheca of field-caught females was counted. Captured females contained the remains of between 1 and 23 spermatophores, each received at a separate mating. The sperm number did not depend on the number of matings. These data suggests that sperm may be lost from the spermatheca, and that it may never arrive there after some matings. In addition to this investigation, a study on the pattern of arrangement within the …
Factors Separating Winners And Losers In E-Business, Bay O'Leary
Factors Separating Winners And Losers In E-Business, Bay O'Leary
Electronic Theses and Dissertations 2000 - 2009
The rapid growth and integration of the Internet as a communication and commercial medium into our society and economy has changed both in many ways. This dissertation is an exploratory study of factors deemed significant in the context of e-business success or failure. A survey instrument is used in addition to qualitative data was gathered from in-depth interviews. Drawing upon the literature from the area of new business in brick and mortar (B&M) firms, an examination of the factors that lead to the success or failure of new brick and mortar businesses are examined in terms of new e business …
Finding Their Voice: Jewish Women Artists In The 19th And 20th Centuries, Anita Mary Kirchen
Finding Their Voice: Jewish Women Artists In The 19th And 20th Centuries, Anita Mary Kirchen
Electronic Theses and Dissertations 2000 - 2009
While Jewish women artists became active in the visual arts beginning in the mid-19th century, to date they have not been addressed as a group. This project presents a theoretical and historical overview of the work of six Jewish women artists---Rebecca Solomon, Charlotte Salomon, Helen Frankenthaler, Sonia Delaunay, Louise Nevelson, and Eva Hesse---examining their art in the context of their cultural heritage, Euro-American nationalities, social environments, life experiences, and contemporary art movements. Providing both representational and nonrepresentational artists---an important factor in Jewish aesthetics---this group includes both well-recognized artists and those whose work has only recently become known. For Delaunay, Frankenthaler, …
From Presidential Wife To Leader In Her Own Right? The Media's Representation Of Hillary Rodham Clinton And The Feminine Ideal, Amy Carol Oxner
From Presidential Wife To Leader In Her Own Right? The Media's Representation Of Hillary Rodham Clinton And The Feminine Ideal, Amy Carol Oxner
Electronic Theses and Dissertations 2000 - 2009
This thesis examines how the media depicted First Lady Hillary Rodham Clinton when she stepped outside of the traditional feminine roles of wife and/or mother and into the traditionally masculine/public world with her bid to run for the office of United States Senator from New York. It critically examines the cover, cover story images, and textual representations in Newsweek, Time, and New York magazines by means of a feminist semiotic and rhetorical analysis to discern potential meanings. The research concludes that the media circumscribe limited roles for First Ladies. First Ladies continue to be shown as victim, object, and/or appendage …
Generations Of Meaning: The Matrix Of Authority In Don Delillo's "White Noise", Richard Michael Potter
Generations Of Meaning: The Matrix Of Authority In Don Delillo's "White Noise", Richard Michael Potter
Electronic Theses and Dissertations 2000 - 2009
Since its appearance in 1985, Don DeLillo's novel White Noise has been regarded as the prototype of the postmodern novel---though not for style and form, but rather for content and theme. DeLillo's postmodern society is the site of dissipated "structures" of power and authority, the hyperreal realm of simulacrum. The narrator---J.A.K. (a.k.a. Jack) Gladney---cannot fathom this world of disseminated authority, where knowledge and power are continually generated behind what Michel Foucault calls "the great abstraction of exchange". My thesis suggests that Jack's struggle to cope in this society is complicated by his own, exaggerated subjectivity. He is, in the words …
Hemingway Hero And The Monomyth: An Examination Of The Hero Quest Myth In The Nick Adams Stories, John James Bajger
Hemingway Hero And The Monomyth: An Examination Of The Hero Quest Myth In The Nick Adams Stories, John James Bajger
Electronic Theses and Dissertations 2000 - 2009
The code hero is the foundation of Hemingway interpretation and central to an understanding of his ideology. The values, ideals and actions of many of Hemingway's greatest heroes fit within this framework, and the Hemingway hero is as firm a part of American literary myth as Melville's Great White Whale. Twain's Huckleberry Finn, or Faulkner's Yoknapatawpha county. I will use Joseph Campbell's work, The Hero with a Thousand Faces, a study in which he details his conception of the monomyth---the basic underlying structure for all heroic myths---to show how the idea of the mythic hero links the Nick Adams stories …
Impact Of Noise On Seafloor Property Estimation Using Biot Model Parameters Obtained Through An Inversion Of Chirp Sonar Data, Lachlan I. Munro
Impact Of Noise On Seafloor Property Estimation Using Biot Model Parameters Obtained Through An Inversion Of Chirp Sonar Data, Lachlan I. Munro
Electronic Theses and Dissertations 2000 - 2009
This thesis describes the development and testing of an inversion method, based on the Biot-Stoll acoustic wave propagation model, for estimating sediments properties from acoustic reflection measurements of the seabed. The Biot-Stoll model is a physics-based model which describes the propagation of compressional and shear waves through porous media. Given the physical sediment properties of the seabed, the pressure reflection coefficient of the seabed is calculated using the Biot-Stoll model. The proposed inversion procedure varies sediment properties until a least squares fit is obtained between the output of the model and the measured reflection coefficient. Random errors are introduced into …
Homoerotic Encounters In The Fictions Of Edgar Allan Poe, Judy Ann Connolly
Homoerotic Encounters In The Fictions Of Edgar Allan Poe, Judy Ann Connolly
Electronic Theses and Dissertations 2000 - 2009
Using "The Fall of the House of Usher" as the principal, framework tale, this study illuminates Edgar Allan Poe's fictions from a perspective that focuses on homoerotic encounters. Since few prior studies have been directed at Poe's homosexual content, this thesis gives special attention to the benchmark criticism by D. H. Lawrence, which has long influenced readers' interpretations of sexual relationships in Poe's stories. This inquiry includes gender studies, especially the work of Leland S. Person, as well as queer theorist commentary on Poe and his contemporaries. It also deliberates on the definition of the queer aesthete provided by Alexander …
Identification Of The Diterpene Cyclase And Elucidation Of Early Steps In The Pseudopterosin Biosynthetic Pathway, Amber Celeste Kohl
Identification Of The Diterpene Cyclase And Elucidation Of Early Steps In The Pseudopterosin Biosynthetic Pathway, Amber Celeste Kohl
Electronic Theses and Dissertations 2000 - 2009
The pseudopterosins and seco-pseudopterosins are diterpene glycosides isolated from the marine soft coral, Pseudopterogorgia elisabethae . These compounds exhibit anti-inflammatory and analgesic activity greater than the industry standard, indomethacin. The overall goal of this research was to complete biosynthetic studies and enzymology related to the development of a biotechnological production method of the pseudopterosins and seco-pseudopterosins. We aimed to examine early steps in the biosynthetic pathway in order to gain detailed knowledge of the biosynthesis and enzymology of the system. Prior to examination of the biosynthetic pathway leading to the pseudopterosins, we developed both in vivo and in vitro systems …
Jewish/Hebrew Choir Program For Elementary/Middle Schools Choirs, Liat. Luel-Rochberg
Jewish/Hebrew Choir Program For Elementary/Middle Schools Choirs, Liat. Luel-Rochberg
Electronic Theses and Dissertations 2000 - 2009
Jewish Music should be a part of every multicultural school's voice program. The medleys included in this work are amid for all audiences. The words reflect Jewish values, morals and spirit that should be shared throughout the United States' diverse society.
Leadership: The Intrapreneurial Experience At The University Of Oxford And The University Of Warwick, United Kingdom, Linda Marie Smith
Leadership: The Intrapreneurial Experience At The University Of Oxford And The University Of Warwick, United Kingdom, Linda Marie Smith
Electronic Theses and Dissertations 2000 - 2009
Intrapreneurialism, a strategy adopted by an organization to exploit ideas and turn them into profitable realities, is a relatively recent phenomenon in higher education. Previous studies have concentrated on intrapreneurialism from the perspective of how it relates to organizational structures, characteristics of entrepreneurial universities, and academic strategies as a comparison to industry (Keller, 1983; Clark, 1998; Slaughter & Leslie, 1997). This present study investigated another aspect of intrapreneurialism, intrapreneurial leadership. This is a subject that, to date, has not received the attention it requires if academic leaders are to play the role expected of them in a modern, highly competitive …
Low-Income Women's Standpoint: Recognizing Poor And Working-Class American Women As Generators Of Resistant Knowledge, Holly Ann Larson
Low-Income Women's Standpoint: Recognizing Poor And Working-Class American Women As Generators Of Resistant Knowledge, Holly Ann Larson
Electronic Theses and Dissertations 2000 - 2009
This dissertation puts economically disadvantaged American women at the center of analysis. I turn to standpoint theory to demonstrate that low-income women construct knowledge out of resistance to systemic oppression in their everyday, concrete worlds. In addition, I create a distinct theory on low-income women's standpoint to show that poor and working-class women are grounded in and produce knowledge from the messiness of contradictions and the murkiness of ambiguity in the immediate, material world. Therefore, their forms of resistance is as complex, ambiguous, and messy as the world from which they struggle. Discerning and analyzing low-income women's standpoint does not …
Mitochondrial Dna Damage In C. Elegans Sperm As A Function Sperm Activity, Joel P. Willis
Mitochondrial Dna Damage In C. Elegans Sperm As A Function Sperm Activity, Joel P. Willis
Electronic Theses and Dissertations 2000 - 2009
Several models for the evolution of maternal inheritance of mitochondria predict that the sperm mitochondria undergo oxidative damage and pose a threat to the developing embryo. Here, I test the hypothesis that the sperm are damaged by reactive oxygen species generated by aerobic sperm activity. In my first experiment, I found no significant difference in fecundity between worms fertilized by old versus young sperm, suggesting that the sperm nuclear genome is not affected by the extent of sperm activity. In my second experiment, I found that sperm mitochondrial DNA has deletions, indicating damage, but this damage does not accumulate with …
Mentoring Across Multiple Generations Of School Leaders, Janis. Andrews
Mentoring Across Multiple Generations Of School Leaders, Janis. Andrews
Electronic Theses and Dissertations 2000 - 2009
Higher expectations for student achievement, administrative shortages, and more diverse emotional, social and learning needs of students, make the job of the educational leader a challenging one for today's school principals and district administrators. Superintendents and educators across the nation report a shortage of qualified candidates to fill principal vacancies. Mentoring was studied as a strategy to support the retention and development of school leaders. This phenomenological study focused on mentoring practices across multiple generations of educational leaders that had been successfully mentored. Selected mentors identified proteges whom they had mentored. The identification of mentors and proteges continued through five …
Modeling And Control Of The "C-Plane" Ocean Current Turbine, James H. Vanzwieten
Modeling And Control Of The "C-Plane" Ocean Current Turbine, James H. Vanzwieten
Electronic Theses and Dissertations 2000 - 2009
The "C-Plane" is a submerged ocean current turbine that uses sustained ocean currents to produce electricity. This turbine is moored to the sea floor and is capable of changing depth, as the current profile changes, to optimize energy production. A 1/30th scale physical prototype of the C-Plane is being developed and the analysis and control of this prototype is the focus of this work. A mathematical model and dynamic simulation of the 1/30th scale C-Plane prototype is created to analyze this vehicle's performance, and aid in the creation of control systems. The control systems that are created for this prototype …
Modeling Multiple Abstraction Levels In Soc Using Systemc, Haritha. Jillellamudi
Modeling Multiple Abstraction Levels In Soc Using Systemc, Haritha. Jillellamudi
Electronic Theses and Dissertations 2000 - 2009
Technological advances are providing us with the capability to integrate more and more functionality into a single chip. This is leading to a new design paradigm, System On a Chip (SoC). SoC design brings with it new challenges and difficulties. Managing these challenges and complexity necessitate modeling of systems at a hierarchy of abstraction levels starting from System Level down to Register Transfer Level. Using a single language across all these levels would ensure that the models are consistent and error-free. SystemC is one such language that has the infrastructure for specifying the design at System level, Behavioral level and …
Modeling Of Gasoline Emissions From Stationary And Mobile Sources At Port Everglades, Martina M. Kimmlingen
Modeling Of Gasoline Emissions From Stationary And Mobile Sources At Port Everglades, Martina M. Kimmlingen
Electronic Theses and Dissertations 2000 - 2009
Available air quality data has been analyzed using the Industrial Source Complex Dispersion Model (ISC3). The FORTRAN program Mobile 5a was utilized to obtain the emission factors. Concerning the toxic volatile organic compounds, the simulations indicate that benzene exceeded the previous permissible air quality standard. Toluene, ethylbenzene and xylene values remained within allowable concentration levels. Long-term annual benzene emissions from stationary sources exceeded the former reference concentration of 0.12 mug/m 3 about five times per year, whereas the data for 8 and 24 hours were relatively low. Simulation results for the mobile sources demonstrated that the emission factor is a …
Modeling Strategic Resource Allocation In Probabilistic Global Supply Chain System With Genetic Algorithm, Montri. Damrongwongsiri
Modeling Strategic Resource Allocation In Probabilistic Global Supply Chain System With Genetic Algorithm, Montri. Damrongwongsiri
Electronic Theses and Dissertations 2000 - 2009
Effective and efficient supply chain management is essential for domestic and global organizations to compete successfully in the international market. Superior inventory control policies and product distribution strategies along with advanced information technology enable an organization to collaborate distribution and allocation of inventory to gain a competitive advantage in the world market. Our research establishes the strategic resource allocation model to capture and encapsulate the complexity of the modern global supply chain management problem. A mathematical model was constructed to depict the stochastic, multiple-period, two-echelon inventory with the many-to-many demand-supplier network problem. The model simultaneously constitutes the uncertainties of inventory …