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LSU Master's Theses

2009

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Processor Design Space Exploration And Performance Prediction, Balachandran Ramadass Jan 2009

Processor Design Space Exploration And Performance Prediction, Balachandran Ramadass

LSU Master's Theses

The use of simulation is well established in processor design research to evaluate architectural design trade-offs. More importantly, Cycle by Cycle accurate simulation is widely used to evaluate the new designs in processor research because of its accurate and detailed processor performance measurement. However, only configuration in a subspace can be simulated in practice due to its long simulation time and limited resources, leading to suboptimal conclusions that might not be applied to the larger design space. In this thesis, we propose a performance prediction approach which employs a state-of-the-art technique from experimental design, machine learning and data mining. Our …

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Team Task Interdependence Perceptions: Toward An Integrative Model Of Teamwork, Jared Ledoux Jan 2009

Team Task Interdependence Perceptions: Toward An Integrative Model Of Teamwork, Jared Ledoux

LSU Master's Theses

The present study examines perceptions of task interdependence and workflow at the individual- and team-levels to evaluate the degree to which team perceptions and homogeneity of perceptions predict team communication and performance in a military combat computer simulation. Team members who perceived higher levels of task interdependence and workflow performed better at both the individual and team levels of analysis. These teams also communicated more frequently, although communication was not significantly correlated with performance. The present findings provide support for the examination of task interdependence perceptions as a means to explain team performance and communication.

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Pulsed Electric Field Influences On Acid Tolerance, Bile Tolerance, Protease Activity And Growth Characteristics Of Lactobacillus Acidophilus La-K, Olga Antonina Cueva Jan 2009

Pulsed Electric Field Influences On Acid Tolerance, Bile Tolerance, Protease Activity And Growth Characteristics Of Lactobacillus Acidophilus La-K, Olga Antonina Cueva

LSU Master's Theses

Pulsed electric field processing represents a promising non-thermal technology which involves the application of pulses of high voltage (20-80 kV/cm) for less than one second to fluid foods placed between two electrodes. During the application of certain PEF conditions microbial inactivation occurs by causing a pore formation and destruction of the cell membranes. Lactobacillus acidophilus is an important probiotic bacterium used for the production of fermented dairy products. The objective of this study was to study the influence of pulsed electric field (PEF) on the growth characteristics, bile tolerance, acid tolerance, and protease activity of Lactobacillus acidophilus LA-K. Freshly thawed …

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Ternary To Binary Converter Design In Cmos Using Multiple Input Floating Gate Mosfets, Josephine Ratna Sathiaraj Jan 2009

Ternary To Binary Converter Design In Cmos Using Multiple Input Floating Gate Mosfets, Josephine Ratna Sathiaraj

LSU Master's Theses

In this work, a ternary to binary converter circuit is designed in 0.5μm n-well CMOS technology. The circuit takes two inputs corresponding to the ternary bits and gives four outputs, which are the binary equivalent bits of the ternary inputs. The ternary inputs range from (-1,-1)3 to (1,1) 3 which are decimal -4 to 4 and the four binary output bits are the sign bit (SB), most significant bit (MSB), second significant bit (SSB) and the least significant bit (LSB). The ternary inputs (-1, 0 and 1) are represented in terms of voltages of -3V, 0V and 3V. Multiple …

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Effects Of Plant Maturity And Bacterial Inoculum Level On The Surface Contamination And Internalization Of Escherichia Coli O157:H7 In Growing Spinach, Shuaihua Pu Jan 2009

Effects Of Plant Maturity And Bacterial Inoculum Level On The Surface Contamination And Internalization Of Escherichia Coli O157:H7 In Growing Spinach, Shuaihua Pu

LSU Master's Theses

The incidence of foodborne outbreaks linked to fresh produce has increased in the United States. Particularly noteworthy was the 2006 Escherichia coli O157:H7 outbreak associated with pre-packaged baby spinach. Factors affecting the contamination of spinach leaves with E. coli O157:H7 are not yet well understood. This study aimed to determine whether E. coli O157:H7 would be present in the aerial leaf tissue of a growing spinach plant when introduced at various plant maturities and different inoculum levels in the growth media in a greenhouse setting. Spinach seeds of a standard commercial variety were sown individually in 8-inch pots, watered daily …

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High School Students' Attitudes Toward Single-Sex Choir Versus Mixed Choir, Jenna Leigh Jackson Jan 2009

High School Students' Attitudes Toward Single-Sex Choir Versus Mixed Choir, Jenna Leigh Jackson

LSU Master's Theses

Participants in this project included high school choral students (N = 54) from central Mississippi and their directors (N = 3). Participants were enrolled both in a mixed choir and either an all boy or all girl choir. A survey was constructed by the researcher to determine the attitudes of the participants toward singing and participation in choir. The 32 survey statements fell into one of four categories: perception of self as singer, attitude about gender in choir, others’ perception of self in choir, and attitude toward choir. In addition, participants were asked to provide demographic data about their gender, …

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Comparing Social Skills In Children With Autistic Disorder And Pervasive Developmental Disorder Not Otherwise Specified, Mary Elizabeth Shoemaker Jan 2009

Comparing Social Skills In Children With Autistic Disorder And Pervasive Developmental Disorder Not Otherwise Specified, Mary Elizabeth Shoemaker

LSU Master's Theses

Although in recent years there has been a large amount of research on Autism Spectrum Disorders (ASD) in general, relatively few studies have focused on Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) as a distinct category. As a deficit in social skills is said to be the primary defining feature of ASD, continued research on assessment and treatment of social skills deficits in ASD is warranted. The present study aims to examine the differences in social skills between children diagnosed with Autistic disorder and PDD-NOS using the Matson Evaluation of Social Skills for Youngsters (MESSY). This study extends a previous …

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Moderating Effects Of Knowledge, Gender, And Education On The Relationship Between Environmental Value Orientation And Support For Louisiana Coastal Restoration, Meya Voorhies Holloway Jan 2009

Moderating Effects Of Knowledge, Gender, And Education On The Relationship Between Environmental Value Orientation And Support For Louisiana Coastal Restoration, Meya Voorhies Holloway

LSU Master's Theses

Coastal Louisiana marshes are eroding at a rate equivalent to one football field every thirty minutes. It is vital to understand the perceptions of the American public regarding this issue. I conducted a self-administered mail survey during the spring of 2006. The survey was sent to 4,500 residents living in the Mississippi River Valley. The survey was used to identify respondents environmental value orientations, assess respondents attitudes with regards to support for restoration funding for Louisiana’s coastal wetlands, and to determine if outside moderating effects occurred to make respondents with specific value orientations (Anthropocentric or Biocentric) more likely to support …

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The Additive Effect Of Melengestrol Acetate (Mga) Priming And Sodium Monensin On Reproductive Performance In Beef Heifers, Jonathan Lance Roberts Jan 2009

The Additive Effect Of Melengestrol Acetate (Mga) Priming And Sodium Monensin On Reproductive Performance In Beef Heifers, Jonathan Lance Roberts

LSU Master's Theses

Breeding beef heifers to produce calves at 2 years of age could be a profitable management decision. The current practices have proved inefficient, which has justified further research in the area. The objective of this study was to examine the effects of repeated progestogen priming on the attainment of puberty by prepubertal heifers, to evaluate the potential additive effect of progestogen priming plus sodium monensin on the attainment of puberty by prepubertal heifers, to examine subsequent reproductive performance, including the response to synchronization of the estrous cycle, first-service pregnancy rates and overall pregnancy rates and to examine the effects of …

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A Geochemical Paleoecological Analysis Of Miocene Mammalian Mega Fauna Of Fort Polk, Louisiana, Travis Lamar Atwood Jan 2009

A Geochemical Paleoecological Analysis Of Miocene Mammalian Mega Fauna Of Fort Polk, Louisiana, Travis Lamar Atwood

LSU Master's Theses

Through a combination of vertebrate paleontology and geochemistry much can be discovered about the environments about the past. Fort Polk’s vertebrate fossil sites are important because they reflect a time when the Antarctic ice cap was just beginning to form during the middle Miocene cooling period just after the middle Miocene Climatic Optimum (~15Ma). This study tested the hypothesis that Miocene seasonality will be preserved in the isotopic geochemistry of terrestrial vertebrate remains at central North American Gulf Coastal sites. Geochemistry was used to understand fossil diagenesis, faunal communities and paleoenvironments. Fort Polk, LA sites range in age from 13.5 …

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Using The Autism Diagnostic Observation Schedule (Ados) To Discriminate Between Children With Autism And Children With Language Impairments Without Autism, Whitney Nicole Dolan Jan 2009

Using The Autism Diagnostic Observation Schedule (Ados) To Discriminate Between Children With Autism And Children With Language Impairments Without Autism, Whitney Nicole Dolan

LSU Master's Theses

The purpose of this study was to learn about the diagnostic accuracy of Module 1 of the ADOS-G. Specifically, this study was designed to determine how well the ADOS-G differentiates children with autism from children with language impairments without autism. Data for this study were obtained from 10 children who were recruited from speech, language and hearing clinics in the metropolitan area of Baton Rouge, Louisiana. Visual inspection and statistical analyses indicated that the means of the ADOS-G scores for all domains (Communication, Social Interaction, and Communication + Social Interaction Score) were higher for the autism group than for the …

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Distribution And Habitat Associations Of Breeding Secretive Marsh Birds In The Mississippi Alluvial Valley Of Northeast Louisiana, Jonathon Joseph Valente Jan 2009

Distribution And Habitat Associations Of Breeding Secretive Marsh Birds In The Mississippi Alluvial Valley Of Northeast Louisiana, Jonathon Joseph Valente

LSU Master's Theses

Populations of many North American secretive marsh birds (SMBs) have declined over the past 30 years, primarily as a function of wetland loss. Ranges for many of these species encompass Louisiana and researchers have investigated various characteristics associated with breeding populations in coastal wetlands, yet similar knowledge is lacking for other parts of the state. I investigated distributions and habitat characteristics associated with breeding SMBs in wetlands and rice fields of the lower Mississippi Alluvial Valley (MAV) of northeast Louisiana. In the 2007 and 2008 breeding seasons we conducted repeated bird surveys in 118 wetlands and 76 rice fields. Common …

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Oil Platforms And Red Snapper Movement And Behavior, Michael Mcdonough Jan 2009

Oil Platforms And Red Snapper Movement And Behavior, Michael Mcdonough

LSU Master's Theses

Understanding the behavior, including movement, of red snapper (Lutjanus campechanus), around and among the many oil and gas platforms in the northern Gulf of Mexico (GOM) is crucial to the management of this important commercial and recreational species. What role oil and gas production platforms play in the attraction vs. production continuum for red snapper is unknown, but it is certain these large structures have a role at some life history stage. We used the VRAP acoustic telemetry system to track red snapper around two platforms in the GOM in 2005 and 2006. Fish detections per hour generally decreased over …

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A Non-Invasive Semiconductor Optical System To Measure Skin Tension, Anna Charron Dugas Jan 2009

A Non-Invasive Semiconductor Optical System To Measure Skin Tension, Anna Charron Dugas

LSU Master's Theses

The objectives of this project are to design, construct, validate and test a low-cost, non-invasive and painless device to measure skin tension. Skin is a complex, multi-layered, anisotropic material with non-linear viscoelastic behavior during stress application. The intricate balance of different semi-elastic fibers and continuous regeneration has brought difficulty to the accurate measurement of its mechanical properties. Commercial skin tension measurement products have been described, but are too expensive to be readily accessible for skin research and clinical utilization. The device to be developed in this project differs from existing devices in that it measures skin deformation under vacuum using …

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