Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5851 - 5880 of 8048

Full-Text Articles in Entire DC Network

Augmented Watermarking, Kiranmayi Penumarthi Jan 2005

Augmented Watermarking, Kiranmayi Penumarthi

LSU Master's Theses

This thesis provides an augmented watermarking technique wherein noise is based on the watermark added to the watermarked image so that only the end user who has the key for embedding the watermark can both remove the noise and watermark to get a final clear image. The recovery for different values of noise is observed. This system may be implemented as a basic digital rights management system by defining a regime of partial rights using overlaid watermarks, together with respectively added layers of noise, in which the rights of the users define the precision with which the signals may be …

Go to article

Experimental And Numerical Study Of Feeding Channel In Proton Exchange Membrane Fuel Cell, Abul Bashar Mahmud Hasan Jan 2005

Experimental And Numerical Study Of Feeding Channel In Proton Exchange Membrane Fuel Cell, Abul Bashar Mahmud Hasan

LSU Master's Theses

The performance of a Proton Exchange Membrane Fuel Cell (PEMFC) using different feeding configurations has been studied, with a focus on the water flooding due to electrochemical reaction. Feeding channel or Bipolar plate in Proton Exchange Fuel Cell is a dominating part. As feeding channel keeps direct contact with the gas diffusion layer, it helps efficiently supplying fuel and air into the gas diffusion layer for efficient production of electricity. Experimental data have been taken at hydrogen flow rates of 20,40,60,80,100 sccm for various bipolar plate arrangements. Three bipolar plates, namely serpentine, straight channel and interdigitated designs, were arranged in …

Go to article

Purification And Structural Characterization Of Caged Dna Oligonucleotides, Brendan Michael Mcadams Jan 2005

Purification And Structural Characterization Of Caged Dna Oligonucleotides, Brendan Michael Mcadams

LSU Master's Theses

“Cage” molecules reversibly block the bioactivity of a target substrate molecule by a photolyzable covalent bond formed at a functional site of the target molecule. The attachment of cage molecules to DNA oligodeoxynucleotides (ODNs) to transiently block bioactivity, and site-specific restoration of bioactivity using targeted light exposure, would enable a new method of control for use in gene therapy, molecular/DNA computing, molecular biology, and drug delivery. The reaction of the cage molecule 1-(4,5-dimethoxy-2-nitrophenyl)diazoethane (DMNPE) with DNA ODNs in an batch reaction yields a mixture of products with varying degrees of caging. Purification and verification of the hypothesized site of DMNPE …

Go to article

Biofiltration For Treatment Of Gas-Phase Voc Mixtures, Bing Qi Jan 2005

Biofiltration For Treatment Of Gas-Phase Voc Mixtures, Bing Qi

LSU Doctoral Dissertations

Biological processes are increasingly used for treatment of air streams contaminated by biodegradable volatile organic compounds (VOCs). The research described in this dissertation involves systematic investigation of various facets of applying biological processes dominated by fungi to remove mixtures of VOCs representative of emissions from paint application and manufacturing. Screening studies were first conducted to assess the ability of multiple fungal species to degrade various industrially important VOCs. In the following phases of the research, studies were conducted to evaluate performance of laboratory-scale bioreactors inoculated with fungi for treatment of mixtures of VOCs representative of emissions from paint spray booths …

Go to article

Structural Integrity And Fatigue Crack Propagation Life Assessment Of Welded And Weld-Repaired Structures, Mohammad Shah Alam Jan 2005

Structural Integrity And Fatigue Crack Propagation Life Assessment Of Welded And Weld-Repaired Structures, Mohammad Shah Alam

LSU Doctoral Dissertations

Structural integrity is the science and technology of the margin between safety and disaster. Proper evaluation of the structural integrity and fatigue life of any structure (aircraft, ship, railways, bridges, gas and oil transmission pipelines, etc.) is important to ensure the public safety, environmental protection, and economical consideration. Catastrophic failure of any structure can be avoided if structural integrity is assessed and necessary precaution is taken appropriately. Structural integrity includes tasks in many areas, such as structural analysis, failure analysis, nondestructive testing, corrosion, fatigue and creep analysis, metallurgy and materials, fracture mechanics, fatigue life assessment, welding metallurgy, development of repairing …

Go to article

Riding Out The Risks: An Ethnographic Study Of Risk Perceptions In A South Louisiana Bayou Community, Susan Camille Manning Jan 2005

Riding Out The Risks: An Ethnographic Study Of Risk Perceptions In A South Louisiana Bayou Community, Susan Camille Manning

LSU Master's Theses

This ethnographic study explores the risk perceptions of a small unincorporated coastal community in southeastern Louisiana. This community has experienced social and environmental change due to events including tropical storms and hurricanes, erosion, subsidence, oil and gas activities, development, and the impact of global seafood markets. Many global risk perception studies have focused on the perception of risk to human health and property connected with natural and technological disasters, but few have explored the issue of minorities and small at-risk communities. To explore this theoretical and methodological gap, this study uses a variety of qualitative ethnographic methods to examine a …

Go to article

Castle To Condo, Country To Corporation: What Becomes Of Hamlet In Almereyda's Modern World, Melissa Trosclair Daigle Jan 2005

Castle To Condo, Country To Corporation: What Becomes Of Hamlet In Almereyda's Modern World, Melissa Trosclair Daigle

LSU Master's Theses

This paper looks into the inner workings of Michael Almereyda's Hamlet (2000). Even though Almereyda updates the setting and cuts many of the lines, sometimes entire scenes, from the source text, he is able to convey the some of the themes through his use of technology and media. While some themes do transfer into the postmodern setting, the places of discord are most interesting. Of particular interest is his use of modern technologies to display the corruption found in Shakespeare's play. These technologies, including speakerphone, surveillance equipment, wiring devices, handheld camcorders, and still photography, create an atmosphere of both continual …

Go to article

The Effect Of Emotion On Witness Suggestibility, Cristine Carmen Roussel Jan 2005

The Effect Of Emotion On Witness Suggestibility, Cristine Carmen Roussel

LSU Master's Theses

When witnesses are exposed to highly stressful and emotional events, the result is often increased arousal and a change in the pattern of attention. Both of these factors are likely to impact witnesses’ memory for the event. In addition, witnesses are often exposed to post-event information from a variety of sources (e.g., investigators, other witnesses, media reports). The goal of the present study was to explore, in the context of the eyewitness suggestibility paradigm, the impact of emotional arousal and attentional focus on event memory and the incidence of eyewitness suggestibility. A secondary goal of this study was to explore …

Go to article

Putting Down Roots In Environmental Literacy: A Study Of Middle School Students' Participation In Louisiana Sea Grant's Coastal Roots Project, Rachel L. Somers Jan 2005

Putting Down Roots In Environmental Literacy: A Study Of Middle School Students' Participation In Louisiana Sea Grant's Coastal Roots Project, Rachel L. Somers

LSU Master's Theses

Few people realize that in Louisiana land is lost to open water at about a rate of 24 square miles a year, faster than anywhere else in the world (Barras, Beville, Britsch, Hartley, Hawes, Jonston, Kemp, Kinler, Martucci, Porthouse, Reed, Roy, Sapkota, & Suhayda, 2003). Not only is the public low to moderately environmentally literate, there is a need to reach students early on to ensure the greatest benefit. This is the main reason why Louisiana Sea Grant¡¦s Coastal Roots Wetland Seedling Nursery Project (Coastal Roots) came into inception. The goal of the project is to improve environmental literacy of …

Go to article

Women's Uses Of The Internet, Rachelle Powell Jan 2005

Women's Uses Of The Internet, Rachelle Powell

LSU Master's Theses

In this study I will look at the main reasons women use the Internet. Studies about women and the Internet are divided; some indicate less use of the Internet than men, but other studies show strong evidence of a narrowing gap in use. Due to this lack of clarity, a study that looks exclusively at women’s Internet activities and usage is needed. Although qualitative research does not test or apply theory the same way quantitative research does, uses and gratifications theory informed this study. This is an exploratory study of women and the Internet.

Go to article

Simulation Study Of Routing Protocols In Wireless Sensor Networks, Vatsalya Kunchakarra Jan 2005

Simulation Study Of Routing Protocols In Wireless Sensor Networks, Vatsalya Kunchakarra

LSU Master's Theses

Wireless sensor networks, a distributed network of sensor nodes perform critical tasks in many application areas such as target tracking in military applications, detection of catastrophic events, environment monitoring, health applications etc. The routing protocols developed for these distributed sensor networks need to be energy efficient and scalable. To create a better understanding of the performance of various routing protocols proposed it is very important to perform a detailed analysis of them. Network simulators enable us to study the performance and behavior of these protocols on various network topologies. Many Sensor Network frameworks were developed to explore both the networking …

Go to article

Synthesis Of Poly(Dl-Lactide-Co-Glycolide) Nanoparticles With Entrapped Magnetite, Carlos Ernesto Astete R. Jan 2005

Synthesis Of Poly(Dl-Lactide-Co-Glycolide) Nanoparticles With Entrapped Magnetite, Carlos Ernesto Astete R.

LSU Master's Theses

The goal of the research was to synthesize magnetic polymeric nanoparticles (MPNPs) under 100 nm in diameter, for future drug delivery applications. The thesis is divided into two main sections. In the first section, a quantitative, and comprehensive description of the top-down synthesis techniques available for poly(lactide-co-glycolide) (PLGA) and magnetic polymeric nanoparticles (MPNPs) formation is provided, as well as the techniques commonly used for nanoparticle characterization. In the second part, a novel way to form MPNPs is presented. The emulsion evaporation method was selected as the method of choice to form poly(lactide-co-glycolide) (PLGA) nanoparticles with entrapped magnetite (Fe3O …

Go to article

This Is What I Meant When I Told You, Ryan David O'Malley Jan 2005

This Is What I Meant When I Told You, Ryan David O'Malley

LSU Master's Theses

THIS IS WHAT I MEANT WHEN I TOLD YOU is a quest to visually decipher the complexities of "self." The goal is to form a relationship of honesty between my mind and my hand, the art and the viewer. The work investigates reoccurring ideas, threaded through each day, in order to create narratives based on the immediacy of emotion, and the struggle between self-realization and uncertainty. Or as one commented during my show, "A celebration of the dark side of life."

Go to article

The Purpose Of Magazine Web Sites, Mark Marquez Ii Jan 2005

The Purpose Of Magazine Web Sites, Mark Marquez Ii

LSU Master's Theses

The purpose of this thesis was to determine whether online versions of printed magazines shared an overall purpose. Guided by grounded theory, interviews were conducted of publishers and staff members from the Web sites of 15 printed magazines. The analysis of the interviews suggested that the overall purpose of online versions of magazines is marketing of the printed magazine, and that the sites also are intended to accomplish a number of secondary purposes.

Go to article

New Contention Resolution Techniques For Optical Burst Switching, Kishore Reddy Koduru Jan 2005

New Contention Resolution Techniques For Optical Burst Switching, Kishore Reddy Koduru

LSU Master's Theses

Optical burst switching (OBS) is a technology positioned between wavelength routing and optical packet switching that does not require optical buffering or packet-level parsing, and it is more efficient than circuit switching when the sustained traffic volume does not consume a full wavelength. However, several critical issues still need to be solved such as contention resolution without optical buffering which is a key determinant of packet-loss with a significant impact on network performance. Deflection routing is an approach for resolving contention by routing a contending packet to an output port other than the intended output port. In OBS networks, when …

Go to article

Cognitive Memory Effects On Non-Linear Video-Based Learning, Katherine Renee Comeaux Jan 2005

Cognitive Memory Effects On Non-Linear Video-Based Learning, Katherine Renee Comeaux

LSU Master's Theses

During an informative learning process, information, material, facts and ideas are typically conveyed in a linear arrangement. Individuals are frequently distracted during this process with their attention being diverted to an interruption (Internet, phone call, etc). When presented with any new information, the mind evolves through problem solving and evaluation procedures. The way in which that information is processed and perceived depends on: (a) original presentation (b) examination of material and (c) an individualistic measurement of success. However, when faced with an interruption, the person is forced to deal with non-linear arrangement of information. This research investigates nonlinear presentation or …

Go to article

Mathematical Models For Estimating Volatile Chemical Emissions From Dredging Operations, Kenneth Alexander Fountain Jan 2005

Mathematical Models For Estimating Volatile Chemical Emissions From Dredging Operations, Kenneth Alexander Fountain

LSU Master's Theses

Dredging operations have been a common remediation for contaminated sediment in an effort to reduce the harmful impact on the environment. The objective of this research was to create models used for estimating chemical release to air from remediating the Indiana Harbor and Canal (IHC) as three separate dredging operations; the Dredge Site, Exposed DM CDF, and Ponded CDF. The evaporative flux estimations are based on a two-resistance mass transport path inclusive of both the molecular diffusion in porous media and interfacial airside mass transport resistances. Several chemodynamic algorithms were used in calculating key transport parameters. Laboratory tests were performed …

Go to article

Sensorsimulator: Simulation Framework For Sensor Networks, Cariappa D. Mallanda Jan 2005

Sensorsimulator: Simulation Framework For Sensor Networks, Cariappa D. Mallanda

LSU Master's Theses

Wireless sensor networks have the potential to become significant subsystems of engineering applications. Before relegating important and safety-critical tasks to such subsystems, it is necessary to understand the dynamic behavior of these subsystems in simulation environments. There is an urgent need to develop a simulation platform that is useful to explore both the networking issues and the distributed computing aspects of wireless sensor networks. Current approaches to simulating wireless sensor networks largely focus on the networking issues. These approaches use well-known network simulation tools that are often difficult to extend to explore distributed computing issues. Discrete-event simulation is a trusted …

Go to article

Mammary Malfunction: A Comparison Of Breastfeeding And Bottlefeeding Product Ads With Magazine Article Content, Angela Broussard Hyderkhan Jan 2005

Mammary Malfunction: A Comparison Of Breastfeeding And Bottlefeeding Product Ads With Magazine Article Content, Angela Broussard Hyderkhan

LSU Master's Theses

Breastfeeding is a pressing social issue in terms of women’s equality, preventative healthcare, and the preservation of a valuable natural resource. Future progress in breastfeeding advocacy will depend on an accurate investigation into the current situation. In this study, three women’s prenatal magazines (American Baby, ePregnancy, and Parenting) are analyzed via content analysis for one calendar year, looking specifically at infant formula-related product advertisements, breastfeeding-related product advertisements and variations of the mother’s role in infant feeding. The content of breastfeeding-related magazine articles also is analyzed within the context of the advertisements. This sample of media appears to have evolved away …

Go to article

Une Société Nouvelle: The Decline Of The Gaullist Party And France's Move To The Left, Neal A. Novak Jan 2005

Une Société Nouvelle: The Decline Of The Gaullist Party And France's Move To The Left, Neal A. Novak

LSU Master's Theses

This thesis is concerned with French politics in the thirteen years after 1968. After the wave of street demonstrations, seizure of schools, and worker sit-ins that beset the country in May of that year, many people in France became convinced of the need to alter the political status quo. In the years that followed, the country’s largest and most dominant political grouping, the Gaullist party, experienced a dramatic loss of electoral support. Between 1968 and 1981, the Gaullists lost control of the National Assembly, the premiership, and the presidency. By May 1981, France’s Fifth Republic was governed by a leftist …

Go to article

The Effect Of Age And Sex On The Growth Patterns Of Bovine Cell Lines, Jeho Shin Jan 2005

The Effect Of Age And Sex On The Growth Patterns Of Bovine Cell Lines, Jeho Shin

LSU Master's Theses

The influence of donor animal sex or age on in vitro bovine cell culture was evaluated to provide foundation information for the selection of donor tissue for nuclear transfer. Skin biopsies were taken from each of sixteen individuals including four bulls (B), four cows (C), four male calves (MC), four female calves (FC). At passage 2, cells from in vitro culture of cell lines were influenced not by gender but by age in the mean cell generation time (MGT). When evaluating familial lineage, comparison between related and unrelated groups showed that most comparisons do not show significant differences in lag …

Go to article

Liquid Architectures: Marcos Novak's Territory Of Information, Camile A. Silva Jan 2005

Liquid Architectures: Marcos Novak's Territory Of Information, Camile A. Silva

LSU Master's Theses

The idea of interactivity between humans and their environment no longer represents the only way of exploring new experiences. Equally passé is the idea that information constitutes the means for this interaction. However, this paper presents that the contemporary idea for interaction has embraced new understandings of the content of experience and the structure of space. New electronic technologies and advanced digital media have separated realities from the realm of the body and transformed experiences into a ubiquitous event. The architectural discourse, that once has been largely a discourse of form and style, has finally overcome those limitations and has …

Go to article

La Madame Et La Mademoiselle: Creole Women In Louisiana, 1718-1865, Katy Frances Morlas Jan 2005

La Madame Et La Mademoiselle: Creole Women In Louisiana, 1718-1865, Katy Frances Morlas

LSU Master's Theses

In Louisiana during the eighteenth and nineteenth centuries, a unique group of people known as Creole created a culture that differed from the rest of the United States. Descendants of the first French and Spanish settlers, Creoles both black and white struggled to maintain their heritage despite an influx of Anglo-American Protestants into Louisiana; women in particular sought to preserve their culture. Although black Creole women have received significant attention, their white counterparts remain virtually absent in scholarship. This thesis focuses on the lives of white Creole women in the River Parishes and New Orleans and seeks to recreate the …

Go to article

Evaluation Of The Spatial Removal Of Nitrogen In The Marshland Upwelling System, Andrea Reneé Turriciano Jan 2005

Evaluation Of The Spatial Removal Of Nitrogen In The Marshland Upwelling System, Andrea Reneé Turriciano

LSU Master's Theses

The Marshland Upwelling System (MUS) is an alternative onsite wastewater treatment technology designed to utilize the natural ecology of saltwater marshes to remove human-borne contaminants. Over the past twelve years, MUSs have been installed in Port Fourchon, Louisiana, Moss Point, Mississippi, and Bayou Segnette, Louisiana. The purpose of this study was to investigate the nitrogen reduction capabilities of the Bayou Segnette system. The objectives of this research were to: 1) determine the first-order removal constants necessary for the development of nitrogen transport equations, 2) explore the spatial dependencies of nitrogen concentrations within the Bayou Segnette system, and 3) determine the …

Go to article

Modeling And Experimentation Of Drying Of Adipose Derived Adult Stem Cells, Surbhi Mittal Jan 2005

Modeling And Experimentation Of Drying Of Adipose Derived Adult Stem Cells, Surbhi Mittal

LSU Master's Theses

Development of protocols for storing desiccated cells at ambient temperatures offers tremendous economic and practical advantages over traditional storage procedures such as cryopreservation and freeze-drying. An integrated frame work of experimentation and modeling is adopted in the present work to develop procedures for storage of adult stem cells at ambient temperature. As a first step, we have measured the post-rehydration membrane integrity of two passages, Passage-0 (P0) and Passage-1 (P1), of human adipose-derived stem cells (hASCs). hASCs were dried using a convective stage at three different drying rates (slow, moderate and rapid) in D-PBS with trehalose (50 mM) and glycerol …

Go to article

Cognitive Adaptation's Implication On Diabetic Adherence, Martin Ancona Jan 2005

Cognitive Adaptation's Implication On Diabetic Adherence, Martin Ancona

LSU Master's Theses

Diabetes, affecting more than 18 million people in the United States, is an epidemic problem. The illness is usually progressive, leading to neuropathy, blindness, and limb amputation. The most common type of the illness, Type 2 diabetes, is usually controllable through a strict combination of diet, exercise, and medication. However, non-compliance, rather than compliance, to prescribed diabetes regimens is the norm. Although past research has uncovered many of the reason that diabetics may fail to adhere to their regimen, the whole puzzle has not yet been solved. This study looked at the Cognitive Adaptation Theory in relation to diabetic adherence. …

Go to article

Electrodeposition Of Magnetic Nanowires And Nanotubes, Despina Mehedintu Davis Jan 2005

Electrodeposition Of Magnetic Nanowires And Nanotubes, Despina Mehedintu Davis

LSU Master's Theses

The current perpendicular to the plane giant magneto-resistance (CPP)-(GMR) effect makes multilayered nanowires of huge interest as magnetic sensor materials. GMR showing multilayer nanostructures are composed of alternating ferromagnetic and nonmagnetic nanometric layers. The giant magnetoresistance (GMR) property is described as a change in electrical resistance when an external magnetic field is introduced. Electrodeposition is the most efficient method for fabricating magnetic nanowires. In addition to the cost-effectiveness, electrodeposition is one of the few methods that can overcome the geometrical restrictions of inserting metals into very deep nanometric recesses, making it the favored method for nanowire and nanotube fabrication. In …

Go to article

Four Dimensional Presentations As A New Representation Method: A Proposal For The Use Of Interactive Multimedia Presentation In Landscape Architecture, Kinoto Miyakoda Jan 2005

Four Dimensional Presentations As A New Representation Method: A Proposal For The Use Of Interactive Multimedia Presentation In Landscape Architecture, Kinoto Miyakoda

LSU Master's Theses

Few studies on presentation methods in the profession of landscape architecture have been done in the past, because evaluating presentations raises primarily subjective issues. Today, interactive multimedia presentations offer an excellent opportunity to investigate the presentation methods employed by landscape architects, gCan new communication technologies help to enhance the communication between the presenter and his audience?h This is the fundamental question addressed in this thesis. It explores interactive multimedia presentations to see their potentials, and considers ways to integrate various multimedia as presentation methods for future landscape architectural presentations. The main terms, interactivity and multimedia, are explained to understand the …

Go to article

Changing Face: The Evolution Of Chinese Women's Dress And Appearance, Xiaolan Wang Jan 2005

Changing Face: The Evolution Of Chinese Women's Dress And Appearance, Xiaolan Wang

LSU Master's Theses

Women’s dress and appearance can reflect a lot about a civilized society. It is influenced by many factors as well. The dress and appearance of contemporary Chinese women have not been studied much by mass communication researchers. This paper, however, explored the factors that influence the development and evolution of contemporary Chinese women’s dress and appearance. It traced back from Dynastic China to Republican China and then to Mao’s red China to examine the historical and political influences imposed on the dress and appearance of Chinese women. Then, it used in-depth interviews to find out factors that influence women’s dress …

Go to article

Full Circle, Elizabeth Cowhig Jan 2005

Full Circle, Elizabeth Cowhig

LSU Master's Theses

My paintings are a result of a mainly intuitive process that evolves out of the combination of shape, color, and texture and originates from personal ideologies involving health phobias and religious beliefs. The imagery in the paintings is of biological origin, cells that fill up with matter, dense spheres that recall cancerous build up, the compositions and colors are inspired by Italian Renaissance paintings. The tangible is inserted into the realm of the ethereal.

Go to article

First Prev Next Last