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

Digital Commons Network™

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

2012

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 72601 - 72630 of 73380

Full-Text Articles in Entire DC Network

Improving Discourse Structure Identification, Jamie Allison Guidry Jan 2012

Improving Discourse Structure Identification, Jamie Allison Guidry

LSU Master's Theses

Rhetorical Structure Theory (Mann et al. 1988), a popular approach for analyzing discourse coherence, suggests that coherent text can be placed into a hierarchical organization of clauses. Identification of a text’s rhetorical structure through automatic discourse analysis is a crucial element for many of today’s Natural Language Processing tasks, but no sufficient tool is available. The current state-of -the-art discourse parser, SPADE (Soricut et al. 2003), is limited to parsing discourse within a single sentence. HILDA (Hernault et al. 2010) extends the parsing abilities of SPADE to the document level, but with a decrease in performance. This study achieved document-level …

Go to article

New Orleans Center For Creative Arts: A History In Progress, Suzanne Michelle Blanchard Chambliss Jan 2012

New Orleans Center For Creative Arts: A History In Progress, Suzanne Michelle Blanchard Chambliss

LSU Doctoral Dissertations

In the state of Louisiana, a quality education for secondary school students can be hard to come by in any area of study much less in the areas of the arts. The New Orleans Center for Creative Arts (NOCCA) provides a quality education to those talented students who audition and are accepted into the program. NOCCA has only existed since 1974 and in its relatively short life it has become a model for half-day pre-professional training programs throughout the United States and it has proven that it is possible to receive a quality education in Louisiana.

Go to article

Effects Of Varying Land Use On Headwater Stream Fish Assemblages And In-Stream Habitats In Southwestern Louisiana, Alexandra Marie Fitzgerald Jan 2012

Effects Of Varying Land Use On Headwater Stream Fish Assemblages And In-Stream Habitats In Southwestern Louisiana, Alexandra Marie Fitzgerald

LSU Master's Theses

Although watershed land use effects on in-stream fish habitat and fish-macrohabitat associations have been widely studied in the past, low-gradient, coastal Louisiana streams have been poorly described in the literature. In this thesis, I report the results of a two-year study exploring relationships among regional land use, in-stream physical habitat, and headwater stream fish assemblages. In chapter two, I examined in-stream habitat variables such as depth, flow, and substrate combined with three-pass electrofishing depletion estimates at thirteen 100-m stream sites. I used a combination of principle component analysis and structural equation modeling to determine if trends were present in the …

Go to article

Advances In Quantum Optical Metrology And The Establishment Of An Invisible Quantum Tripwire, Steven Blane Mccracken Jan 2012

Advances In Quantum Optical Metrology And The Establishment Of An Invisible Quantum Tripwire, Steven Blane Mccracken

LSU Doctoral Dissertations

This thesis presents a summary of the foundation and background of the field of quantum optics, and an analysis of some recent discoveries in various fields of which I have aided in furthering investigative research and advancement through publications. Such topics include numerical optimization of generalized quantum states used in phase sensitive quantum metrology, an analysis of object detection through the use of quantum interferometry in the presence of lossy conditions, and the use of the latter technique to propose an invisible quantum tripwire. First is a collaborative effort to numerically optimize quantum optical states for quantum metrological applications. We …

Go to article

Determining Impact: Using Formative Evaluation In A Professional Development Program For Teachers Of Mathematics And Science, Tiah B. Alphonso Jan 2012

Determining Impact: Using Formative Evaluation In A Professional Development Program For Teachers Of Mathematics And Science, Tiah B. Alphonso

LSU Master's Theses

The purpose of this study was to evaluate a professional development (PD) program for middle and high school teachers of mathematics and science which is funded by a $5 million National Science Foundation grant. The evaluation was internal and formative in nature and took place in two separate phases. The focus of the evaluation was not only on program improvement but also to extend the body of existing knowledge in the area of teacher professional development. Both the needs of project stakeholders and the findings of previous research in the areas of professional development and program evaluation were drawn on …

Go to article

La Place Et Le Rôle De La Mère Dans La Construction Identitaire De Ken Dans Le Baobab Fou De Ken Bugul, Natacha Jeudy Jan 2012

La Place Et Le Rôle De La Mère Dans La Construction Identitaire De Ken Dans Le Baobab Fou De Ken Bugul, Natacha Jeudy

LSU Master's Theses

At a time when francophone women writers are hardly published, the Senegalese author Ken Bugul becomes the talk of the town with her 1982 novel Le baobab fou. At that point, not only is she becoming a francophone literary precursor to other francophone writers, she also imposes a style which explores and contradicts traditional views. Indeed from the beginning of the story in rural Senegal where the mother is traditionally defined and held responsible for educating her children so that the tradition can endure, Ken has to face her mother’s disappearance when she is just a child. The lack of …

Go to article

Texting Laws And Cell Phone Users: Motivations For Texting While Driving, Jonathan Ferrante Jan 2012

Texting Laws And Cell Phone Users: Motivations For Texting While Driving, Jonathan Ferrante

LSU Master's Theses

ABSTRACT Legal scholars, academics, and industry researchers have indicated that using cell phones when driving is among the most dangerous hazard faced by motorists today. This relatively new technology is embedded in the lives of most people, at all times of the day, including when behind the wheel of a car. Harvard and National Highway Traffic Safety Administration researchers have exposed the dangers of cell phones and driving, but a solution to curtail the problem has yet to be found. This study seeks to understand the motivations and mediating factors affecting texting and driving law compliance by cell phone users. …

Go to article

Drinking With Friends: A Cellular Automata Approach To Modeling Peer Influence On Binge Drinking Behavior, Piper Jackson, Andrew Reid, Niki Huitson, Kathryn Wuschke, Vahid Dabbaghian Jan 2012

Drinking With Friends: A Cellular Automata Approach To Modeling Peer Influence On Binge Drinking Behavior, Piper Jackson, Andrew Reid, Niki Huitson, Kathryn Wuschke, Vahid Dabbaghian

Criminology and Criminal Justice Faculty Publications and Presentations

In this project, we adopt Cellular Automata (CA) modeling as a means to focus solely on the elements of concern: individual state (binging) and local interactions (peer pressure). CA models are well suited for exploring the dynamics that occur within a population, and are useful for visualizing the clustering behaviour of communities. With this more abstract approach, it is possible to simulate large populations with reasonable computational requirements.

Go to article

A Single-Subject Study Examining The Effects Of A Behavioral Intervention For Verbal Recurrent Perserveration, Jenifer Juengling-Sudkamp Jan 2012

A Single-Subject Study Examining The Effects Of A Behavioral Intervention For Verbal Recurrent Perserveration, Jenifer Juengling-Sudkamp

LSU Doctoral Dissertations

BACKGROUND: Approximately 1 million people in the United States suffer from aphasia and > 50% of those people may demonstrate recurrent perseverations. No consensus has been forthcoming on whether (1) a therapy that directly confronts clients with imminent pre-articulatory automatisms (the perseverations) or (2) a more typical neuropsychological therapy that eschews any direct confrontation with automatic behaviors works best. PURPOSE: The purpose of this study was to determine the treatment efficacy of a non-confrontational picture naming intervention on naming ability in individuals with aphasia and recurrent perseverations. METHODS: This is a prospective single-subject ABAB multiple baseline design replicated across 3 right-handed …

Go to article

Turbine Blade Internal Cooling: Trailing Edge, Coolant-Passage Entry, Bend Effect And Improvement In Thermal Performance, Krishnendu Saha Jan 2012

Turbine Blade Internal Cooling: Trailing Edge, Coolant-Passage Entry, Bend Effect And Improvement In Thermal Performance, Krishnendu Saha

LSU Doctoral Dissertations

Efficient cooling of gas turbine blade is imperative for safe operation of the gas turbine engine at high temperatures. In the present work, two converging lattice structures suitable for trailing edge applications are tested and their performance is compared with a conventional pin-fin configuration. Another constant cross section lattice structure is tested to see the cooling efficiency of lattice channels with different number of sub-channels. Converging lattice structures show higher heat transfer enhancement and comparable or higher thermal performance than traditional pin-fin cooling used in gas turbine trailing edge. The highest pressure drop incurred in a multi-pass channel is at …

Go to article

Advice In Troubles Talk Conversations Between Strangers: The Role Of Problem Seriousness And The Impact Of Advice On Helper Supportiveness And The Desire For Future Interactions, Andrea Jean Vickery Jan 2012

Advice In Troubles Talk Conversations Between Strangers: The Role Of Problem Seriousness And The Impact Of Advice On Helper Supportiveness And The Desire For Future Interactions, Andrea Jean Vickery

LSU Master's Theses

In troubles talk conversations, problems are disclosed and discussed. When responding to problem disclosures, advice is one common response where the respondent recommends how to think, feel or act in response to a problem. This thesis focuses on extending our understanding of advice messages, with a main research question focused on determining if advice occurs in initial interactions between strangers. Through an analysis of 125 transcribed conversations, advice was present in 38.4% (n = 44) of the conversations. Advice was offered in response to less serious problems, supporting the first hypothesis. There was no support found for the positive association …

Go to article

En(Gendering) Policy: Gender Policies In Former Soviet Republics, Natasha Lachelle Bingham Jan 2012

En(Gendering) Policy: Gender Policies In Former Soviet Republics, Natasha Lachelle Bingham

LSU Doctoral Dissertations

This dissertation examines gender policies in former Soviet republics. Gender policies are depicted as traditional policies (including such policies as child support, spousal support, and inheritance rights), violence against women policies (domestic violence, marital rape, sexual assault, and sexual harassment), and human trafficking policies. It builds upon previous works with a multi-methodological approach (content analysis, logistical regression, and qualitative survey analysis). The focus here is on the factors that influence adoption of formal policies in former Soviet republics from 1993-2008. I explore variance across both countries and policy areas, assessing whether (and why) certain post-Soviet states are more likely to …

Go to article

New Coding/Decoding Techniques For Wireless Communication Systems, Yonas Gebregziabher Debessu Jan 2012

New Coding/Decoding Techniques For Wireless Communication Systems, Yonas Gebregziabher Debessu

LSU Doctoral Dissertations

Wireless communication encompasses cellular telephony systems (mobile communication), wireless sensor networks, satellite communication systems and many other applications. Studies relevant to wireless communication deal with maintaining reliable and efficient exchange of information between the transmitter and receiver over a wireless channel. The most practical approach to facilitate reliable communication is using channel coding. In this dissertation we propose novel coding and decoding approaches for practical wireless systems. These approaches include variable-rate convolutional encoder, modified turbo decoder for local content in Single-Frequency Networks, and blind encoder parameter estimation for turbo codes. On the other hand, energy efficiency is major performance issue …

Go to article

Measurement Of Pain, Pain Disability, And Pain Beliefs Of Morbidly Obese Adults, Brooke Louise Barbera Jan 2012

Measurement Of Pain, Pain Disability, And Pain Beliefs Of Morbidly Obese Adults, Brooke Louise Barbera

LSU Doctoral Dissertations

Both obesity and pain are pervasive public health problems, contributing to significant disability in the United States and worldwide. Studies have demonstrated a positive association between obesity and pain, with increasing BMI related to increasing levels of pain intensity; however, the mechanisms underlying this relationship are not well understood. The present study assessed the presence of pain, pain-related disability, and pain beliefs in a morbidly obese (BMI > 40 kg/m2) sample participating in a medically-supervised, nonsurgical weight loss intervention. After controlling for demographic variables and depression, pain was reported in 36.7% of the sample (N = 390). Results indicated that greater …

Go to article

Influences On Behavior Adaptations To Reduce Exposure To Environmental Hazards Among Residents Of Louisiana's Upper Industrial Corridor, Corrinthia Marie Hinton Jan 2012

Influences On Behavior Adaptations To Reduce Exposure To Environmental Hazards Among Residents Of Louisiana's Upper Industrial Corridor, Corrinthia Marie Hinton

LSU Master's Theses

Over the past century, the growth in petrochemical manufacturing within Louisiana’s Upper Industrial Corridor brought economic development, but also introduced toxic emissions and environmental exposure risks to residents of the area. For the citizens living in close proximity to multiple facilities there is the added risk of chemical exposure from environmentally hazardous accidents. This study seeks to gain insights into patterns of risk-reducing behaviors of residents in East Baton Rouge Parish so that better educational outreach programs can be developed. This research addresses the following questions: To what extent are residents of Baton Rouge taking steps to reduce environmental exposure …

Go to article

Hidden Music: Vowel Formant Theory And The Languages Of Verdi's Don Carolos, Justin Andrew Owen Jan 2012

Hidden Music: Vowel Formant Theory And The Languages Of Verdi's Don Carolos, Justin Andrew Owen

LSU Master's Theses

Don Carlos, Giuseppe Verdi’s third French opera, was first performed at the Paris Opéra in 1867; today, it is commonly performed in its Italian translation. This translation is problematic, however, because it departs from the original French in more than language: as a translation to be sung, it often conveys a different meaning, places key words on different sections of the melody, and consists of a different sound. This latter aspect and its relationship to notated melody is the focus of this study. For the purpose of this study, the sound of a language is defined by the overtones of …

Go to article

Climate Change Displacement And Global Governance: A Case Study Of Three Intergovernmental Organizations And The Conflict Between The Member States And Bureaucracy, Andrea C. S. Berringer Jan 2012

Climate Change Displacement And Global Governance: A Case Study Of Three Intergovernmental Organizations And The Conflict Between The Member States And Bureaucracy, Andrea C. S. Berringer

LSU Doctoral Dissertations

Climate change is a topic most often broached by environmental scientists and activists and its effects are discussed in terms of animal populations and atmospheric events. However, its direct effect on human life is yet to garner such attention. A changing climate will affect how people are able to use their environment, if at all. Sea level rise and desertification will force a shift in human habitation. How the world seeks to deal with this shift is yet to be seen. The global governance of climate change-induced displacement is currently at the stage of ad hoc development. Legal and conceptual …

Go to article

An Analysis Of Change In Policy Context Regarding Corexit Dispersant Use Following The Deepwater Horizon Oil Spill, Kelly Arceneaux Jan 2012

An Analysis Of Change In Policy Context Regarding Corexit Dispersant Use Following The Deepwater Horizon Oil Spill, Kelly Arceneaux

LSU Master's Theses

On April 20, 2010, an explosion on the offshore drilling platform Deepwater Horizon located in the Gulf of Mexico resulted in the largest oil spill in U.S. history. The subsequent use of massive amounts of chemical dispersants near the Gulf floor, an untested method, led to great controversy regarding the regulation, use, and toxicity of dispersants of the COREXIT family of products, as well as of dispersants in general. This study compares dispersant (COREXIT brand products in particular) regulation and use in the United States, Norway and the United Kingdom; the latter two countries are among the largest oil producers …

Go to article

Water Quality Dynamics Of Low-Gradient, Headwater Streams In A Timber-Industry Dominated Watershed In Louisiana, Abram Atys Dasilva Jan 2012

Water Quality Dynamics Of Low-Gradient, Headwater Streams In A Timber-Industry Dominated Watershed In Louisiana, Abram Atys Dasilva

LSU Master's Theses

Timber harvesting can degrade the quality of adjacent water bodies, an important concern for Louisiana, nearly 50% of which is forested, and in which the forest industry is the second-largest manufacturing employer. To protect valuable freshwater resources in Louisiana, a manual of best management practices (BMPs) was published in 2000 describing techniques for limiting forestry-caused water quality degradation. While these BMPs are widely implemented, their effectiveness in protecting water quality is largely unknown. To determine the effectiveness of these BMPs, this thesis research conducted three studies to address timber harvest BMP effectiveness on protection of stream dissolved oxygen, metabolism, and …

Go to article

The Role Of Music-Making In The Identity Construction Of Members Of An Adult Community Concert Band, Pamela G. Taylor Jan 2012

The Role Of Music-Making In The Identity Construction Of Members Of An Adult Community Concert Band, Pamela G. Taylor

LSU Doctoral Dissertations

The purpose of this qualitative case study was to ascertain how music-making and band membership contributed to the identities of members of the New Orleans Concert Band and how their identities influenced their behaviors. The musician role identity of members of the New Orleans Concert Band, an adult community band, was examined through the lens of identity theory using ethnographic methods. Findings were based upon interviews with 37 band members, observations of rehearsals and concerts, and an examination of the organization’s documents. Results indicated that members valued individual and group music-making, literature played by the band, and social aspects of …

Go to article

Developing A Geospatial Protocol For Coral Epizootiology, Jennifer Anne Lentz Jan 2012

Developing A Geospatial Protocol For Coral Epizootiology, Jennifer Anne Lentz

LSU Doctoral Dissertations

This dissertation explores how geographic information systems (GIS) and spatial statistics, specifically the techniques used to map, detect, and spatially analyze disease epidemics, could be used to advance our understanding of coral reef health. Given that different types of spatial analysis, as well as different parameter settings within each analysis, can produce noticeably different results, poor selection or improper use of a given technique would likely lead to inaccurate representations of the spatial distribution and false interpretations of the disease. For this reason, I performed a comprehensive review of the following types of exploratory spatial data analysis (ESDA): mapping and …

Go to article

Modeling Gopher Tortoise (Gopherus Polyphemus) Habitat In A Fire-Dependnent Ecosystem In North Florida, Christina Legleu Jan 2012

Modeling Gopher Tortoise (Gopherus Polyphemus) Habitat In A Fire-Dependnent Ecosystem In North Florida, Christina Legleu

LSU Master's Theses

Gopher tortoise (Gopherus polyphemus) populations have declined with longleaf pine (Pinus palustris) ecosystems across their historic range. The influence of gopher tortoise burrows on co-inhabiting plants and animals necessitates an understanding of how landscape features and management practices influence gopher tortoise presence, absence, and abandonment. In this study, naïve gopher tortoise burrow encounter rates from a line transect distance sampling (LTDS) pilot study were used for two methods of modeling gopher tortoise habitat. In Chapter 1, naïve encounter rates were tested for a linear correlation to a HSI model created from three ranked geographic information system (GIS) landscape variables. Initial …

Go to article

Effect Of Instructional Methodologies On Student Achievement Modeling Instruction Vs. Traditional Instruction, Jacqueline Grace Barker Jan 2012

Effect Of Instructional Methodologies On Student Achievement Modeling Instruction Vs. Traditional Instruction, Jacqueline Grace Barker

LSU Master's Theses

ABSTRACT Different teaching styles can impact student learning in many ways. The purpose of this study was to determine the effectiveness of Modeling Instruction on student achievement in a high school Chemistry course. Different tests were used to compare the data at the beginning of a school year and at the end of the school year. The tests used were to determine gains in chemistry content knowledge, abilities to reason scientifically, and attitudes about learning chemistry. The control group was taught by traditional instruction through the use of lecture, note-taking, and textbook guided assignments. The experimental group was taught by …

Go to article

Hurricane Damage Assessment Process For Residential Buildings, Carol C. Massarra Jan 2012

Hurricane Damage Assessment Process For Residential Buildings, Carol C. Massarra

LSU Master's Theses

Assessing an affected area immediately after a severe natural hazard event and saving the resulting data are vitally important in any effort to reduce future economic losses from natural hazards. These data are used as a record of buildings performance and as a major component for statistical analysis and damage modeling studies. Since these data are used as input for these studies, the data must be assessed and collected in a scientific and standardized way. Despite this requirement, neither a systematic damage assessment process nor a standardized data collection protocol is currently available in the United States to ensure that …

Go to article

Online Reviews And Consumers' Willingness To Pay: The Role Of Uncertainty, Yinglu Wu Jan 2012

Online Reviews And Consumers' Willingness To Pay: The Role Of Uncertainty, Yinglu Wu

LSU Doctoral Dissertations

Empirical studies of online reviews have found that valence (average rating) has a consistently positive impact on consumers’ willingness to pay (WTP), but volume does not. Although two studies tried to explain this phenomenon using different perspectives (Wu and Ayala, 2012; Sun, 2012), neither study can fully accommodate the consumer behaviors observed by the other. This dissertation adopts a theoretical framework that can explain the consumer behaviors observed in both studies as well as the varying influence of review volume at the individual level. Specifically, several studies were conducted to investigate the relationship between bidirectional online seller reviews (e.g., the …

Go to article

An Investigation Into The Moderating Role Of Fear Appeals On The Relationship Between Regulatory Fit And Persuasion, Nam Young Kim Jan 2012

An Investigation Into The Moderating Role Of Fear Appeals On The Relationship Between Regulatory Fit And Persuasion, Nam Young Kim

LSU Doctoral Dissertations

As one of the ways to persuade young people effectively, several scholars have indicated that using a tailored message that is consistent with individuals’ concerns and interests can influence their attitude and behavioral changes. Among diverse tactics to construct tailored health-messages, this research especially paid attention to individuals’ motivational goals (i.e., regulatory focus) that make them more inclined to a certain outcome. While promotion-oriented individuals primarily focus on how to achieve a desired ending, prevention-oriented individuals mainly focus on avoiding undesirable outcomes (Higgins, 1997; Higgins et al., 2001). Although numerous studies support the positive effects of the congruency between regulatory …

Go to article

Insights Into The Role Of Pfkfb3 In Cancer, Minsuh Seo Jan 2012

Insights Into The Role Of Pfkfb3 In Cancer, Minsuh Seo

LSU Doctoral Dissertations

PFKFB3, an isoform of PFK-2, which is highly expressed in cancer cells, has been suggested to be associated with enhanced aerobic glycolysis in cancer by elevating the intracellular levels of key glycolytic activator, Fru-2,6-P2. This work describes the importance of PFKFB3 function in metabolic alterations and adaptations of cancers, providing new insights into the PFKFB3-associated ROS regulation in cancer and suggesting promising strategies for cancer drug development. The first study investigates the therapeutic potential of novel PFKFB3 inhibitors as well as the molecular mechanism of PFKFB3 inhibition. I was able to identify small molecular inhibitors, N4A and YN1, which almost …

Go to article

Making News In 140 Characters: How The New Media Environment Is Changing Our Examination Of Audiences, Journalists, And Content, Ashley Elizabeth Kirzinger Jan 2012

Making News In 140 Characters: How The New Media Environment Is Changing Our Examination Of Audiences, Journalists, And Content, Ashley Elizabeth Kirzinger

LSU Doctoral Dissertations

This project answers the following questions: What does political reporting on social media look like? How is political journalists’ use of social media changing their relationships with sources and fellow political journalists? Triangulating qualitative and quantitative research methods (content analysis, social network analysis, and in-depth interviews) in an examination of Twitter, a social media platform popular among journalists, this project provides insight into how changes in media routines are affecting news content.

Go to article

Population Dynamics Of The Eastern Oyster In The Northern Gulf Of Mexico, Benjamin S. Eberline Jan 2012

Population Dynamics Of The Eastern Oyster In The Northern Gulf Of Mexico, Benjamin S. Eberline

LSU Master's Theses

This project examined the economically and ecologically valuable eastern oyster (Crassostrea virginica) in the Northern Gulf of Mexico using field and laboratory experiments. Specifically, this project focused on natural rates of settlement, growth, and mortality in a variety of temperature and salinity regimes within Breton Sound, LA. Seed and market sized oysters in cages resting on the bottom, as well as settlement tiles, were monitored at four sites in Breton Sound, LA, along what is typically a salinity gradient ranging from ~5 to ~20. In April 2010, the Caernarvon Freshwater Diversion was fully opened with the goal of minimizing the …

Go to article

Computer Simulations Of Faceted Nanoparticles And Carbon Nanotubes In Liquid Crystals, Shivkumar Shankar Bale Jan 2012

Computer Simulations Of Faceted Nanoparticles And Carbon Nanotubes In Liquid Crystals, Shivkumar Shankar Bale

LSU Doctoral Dissertations

The purpose of this research is to investigate the use of liquid crystals (LCs) to manipulate and organize faceted nanoparticles and carbon nanotubes (CNTs). Computer simulations at different levels of detail are used to study these systems. Results from this project will be relevant for potential applications of these systems in displays, nanoscale electronics, electro-optical switches, and in the development of composites with unique mechanical, thermal and/or electronic properties. In this research, two independent but directly related projects were carried out. In the first part of the research, we investigated the torque that develops when faceted nanoparticles, namely cubes and …

Go to article

First Prev Next Last