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2004

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Study On The Termiticidal Components Of Juniperus Virginiana, Chamaecyparis Nootkatensis And Chamaecyparis Lawsoniana, Yaojian Liu Jan 2004

Study On The Termiticidal Components Of Juniperus Virginiana, Chamaecyparis Nootkatensis And Chamaecyparis Lawsoniana, Yaojian Liu

LSU Master's Theses

Termites cause serious damage to wood and wood products. In recent years, increasing attention has been paid to extractives from naturally decay resistant trees. In this study, we compared the termiticidal and antifungal effects of extractives from Alaska yellow cedar (AYC), Port-Orford cedar (POC), and Eastern red cedar (ERC). Pentane and Hexane-Acetone extractives from YC and POC, and pentane extractives from ERC were most favorable in terms of termite protection among the extractives we got. Weight loss of strips treated with 5000 ppm pentane extractives from Eastern red cedar, was significantly lower than those treated with solutions of pentane extractive …

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Kinetic Analysis Of Kluyveromyces Marxianus Yeast Strain, Erika Guimaraes Madeira Reeves Jan 2004

Kinetic Analysis Of Kluyveromyces Marxianus Yeast Strain, Erika Guimaraes Madeira Reeves

LSU Master's Theses

This research investigated the growth kinetic parameters (Ks and µmax) of the Kluyveromyces marxianus yeast strain for a batch process under aerobic and anaerobic conditions at 45oC using the Two-Liter Bioflo® 2000 Fermentors and the Orbital Shaker Bed with 250mL flasks (New Brunswick Scientific). This yeast strain was grown in twelve different glucose media concentrations (Anderson et al. 1986), ranging from 200 mg/L to 80,000 mg/L. Several analytical techniques were used, such as COD measurement to determine soluble and total substrate concentrations, TSS and OD measurements to determine biomass formation, HPLC measurements to determine carbohydrate concentrations, and GC measurements to …

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Extreme Precipitation Events In East Baton Rouge Parish: An Areal Rainfall Frequency/Magnitude Analysis, Michelle Marie Russo Jan 2004

Extreme Precipitation Events In East Baton Rouge Parish: An Areal Rainfall Frequency/Magnitude Analysis, Michelle Marie Russo

LSU Master's Theses

Severe rainfall events are one of the most frequent weather hazards in the United States. These events are particularly problematic for the southeastern United States because of its subtropical climate. For these reasons, and because of the recent urban growth in the parish, East Baton Rouge Parish officials are concerned whether the current stormwater drainage system can keep pace with development. As a result, this project evaluated the rainfall frequency/magnitude for parish-wide extreme events and their synoptic forcing mechanisms. To this end, this research mapped parish-wide storms and compared three interpolation techniques. It also compared two methods of areal summation …

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Complexity And Nekton Use Of Marsh Edge Habitats In Barataria Bay, Louisiana, Timothy W. Birdsong Jan 2004

Complexity And Nekton Use Of Marsh Edge Habitats In Barataria Bay, Louisiana, Timothy W. Birdsong

LSU Master's Theses

This study examined the effects of intrahabitat variability on marsh edge use by fishes and decapod crustaceans. The objectives were to (1) identify quantitative measures of habitat complexity that describe the structural design of marsh edge habitats, and (2) examine differences in nekton use between cut-bank and gently sloping marsh edge habitats. The study was conducted in Barataria Bay, Louisiana at 75, 10-m marsh edge study sites. Monthly seining was conducted in fall 2003 and spring 2004 and measures of habitat complexity were recorded at each sample location. Indices of tidal inundation and site exposure to wind and wave action …

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Experimental Validation Of A Smart-Bias Active Magnetic Bearing Controller, Shailesh Pradhananga Jan 2004

Experimental Validation Of A Smart-Bias Active Magnetic Bearing Controller, Shailesh Pradhananga

LSU Master's Theses

Active magnetic bearings (AMBs) are being increasingly employed in the aerospace industry in a variety of devices including compressors, turbines, pumps, and flywheels. One application of great interest to future space missions is the Integrated Power and Attitude Control System (IPACS). The IPACS consists of an arrangement of flywheels that integrates the energy storage and attitude control functions into a single system; thereby, reducing the spacecraft mass, volume, launching cost, and maintenance. Like any energy storage system, flywheels need to be operated with low power losses. AMBs are ideally suited for flywheels because they eliminate mechanical losses (friction). Nevertheless, AMBs …

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Transport And Deposition Of Fluid Mud Event Layers Along The Western Louisiana Inner Shelf, Kristina Anne Rotondo Jan 2004

Transport And Deposition Of Fluid Mud Event Layers Along The Western Louisiana Inner Shelf, Kristina Anne Rotondo

LSU Master's Theses

The western Louisiana inner shelf along the Chenier Plain coast has experienced fluid mud deposition in response to increased fine sediment supplied by the Atchafalaya River since ~1950’s. The goal of this project is to assess the characteristics comprising the sedimentary strata and stratigraphic architecture that result from mud deposition on the inner shelf. Recent time-series cores collected from the inner shelf along the Chenier plain coast show the region is subject to transient fluid mud deposition, leading to high long-term accumulation rates. Sediment cores were collected in May 2001, March and May 2002 from the inner shelf landward of …

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Survivable Multicasting In Wdm Optical Networks, Sateesh Chandra Shekhar Jan 2004

Survivable Multicasting In Wdm Optical Networks, Sateesh Chandra Shekhar

LSU Master's Theses

Opportunities abound in the global content delivery service market and it is here that multicasting is proving to be a powerful feature. In WDM networks, optical splitting is widely used to achieve multicasting. It removes the complications of optical-electronic-optical conversions [1]. Several multicasting algorithms have been proposed in the literature for building light trees. As the amount of fiber deployment increases in networks, the risk of losing large volumes of data traffic due to a fiber span cut or due to node failure also increases. In this thesis we propose heuristic schemes to make the primary multicast trees resilient to …

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Modeling Of Cane Sugar Colorant Removal In Packed-Bed Ion Exchange Columns And An Investigation Into Pretreatment Methods, Bruce Malcolm Ellis Jan 2004

Modeling Of Cane Sugar Colorant Removal In Packed-Bed Ion Exchange Columns And An Investigation Into Pretreatment Methods, Bruce Malcolm Ellis

LSU Master's Theses

Cane sugar colorants have been extensively researched but still little is known about their exact compositions. Rather than distinct compounds, they are a mixture of many compounds. Some it is assumed can be classified into the pseudo components that have been defined using gel permeation chromatography, based on molecular weight. The defining of these components has allowed the colorants to be modeled independently, instead of as one lumped color parameter. The measured colored components were modeled using a linear driving force adsorption model, which could be applied in the design process for optimizing the decolorizing capacity of the resins. The …

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A Bio-Mems Device For Separation Of Breast Cancer Cells From Peripheral Whole Blood, Juan Feng Jan 2004

A Bio-Mems Device For Separation Of Breast Cancer Cells From Peripheral Whole Blood, Juan Feng

LSU Master's Theses

This work demonstrates the application of Bio-Micro Electro Mechanical System (Bio-MEMS) technology for early breast cancer detection and diagnosis. Early breast cancer detection and diagnosis typically uses conventional mammogram screening followed by biopsy, which can be problematic since mammography can only detect highly calcified tumors greater than 1 cm in size. A micro-device was developed to identify and specifically collect tumor cells of low abundance (1 tumor cell among 107 normal blood cells) from circulating whole blood. By immobilizing anti-EpCAM (Epithelial Cell Adhesion Molecule) antibodies on polymer micro-channel walls by the chemical surface modification of PMMA, breast cancer cells …

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Scalability Of Car-Following And Lane-Changing Models In Microscopic Traffic Simulation Systems, Yan Zhang Jan 2004

Scalability Of Car-Following And Lane-Changing Models In Microscopic Traffic Simulation Systems, Yan Zhang

LSU Master's Theses

Microscopic simulation models are more and more widely used to support real-time control and management functions in the field of transportation engineering. However, even with today¡¯s advancement in computing power, microscopic simulation modeling remains a computationally intensive process that imposes limitations on its potential use for modeling large-scale transportation networks. While microscopic features of a simulated system collectively define the overall system characteristics, it is argued here that the simulation process itself is not necessarily free of redundancy which, if reduced, could substantially improve the computational efficiency of simulation processes without substantially compromising the overall integrity of the simulation process. …

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Cox Regression Model, Lindsay Sarah Smith Jan 2004

Cox Regression Model, Lindsay Sarah Smith

LSU Master's Theses

Cox, in 1972, came up with the Cox Regression Model to deal handle failure time data. This work presents background information leading up to the Cox's regression model for censored survival data. The marginal and partial likelihood approaches to estimate the parameters in this model are presented in detail. The estimation techniques of the hazard and survivor functions are explained. All of these ideas are illustrated using data from the Veteran’s Administration lung cancer study.

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Validation Of Pet/Ct Dataset For Radiation Treatment Planning, Rajesh Manoharan Jan 2004

Validation Of Pet/Ct Dataset For Radiation Treatment Planning, Rajesh Manoharan

LSU Master's Theses

PET/CT scans are frequently used for radiation treatment planning (RTP). Our work demonstrates a practical approach for validating the PET/CT dataset for RTP. We tested this QA process on a Reveal HD PET/CT scanner. The phantom used is a TGM2 ISIS QA phantom, a 14 cm acrylic cube with a central bore for object inserts. It has four different built-in inserts for electron density verification. 22Na seeds are inserted into the pinholes at the side of the cube. PET/CT images of the phantom with 22Na seeds are acquired and fused in the scanner Syngo fusion software. Registration of the PET/CT …

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An Online Fabric Database To Link Fabric Drape And End-Use Properties, Ayse Gider Jan 2004

An Online Fabric Database To Link Fabric Drape And End-Use Properties, Ayse Gider

LSU Master's Theses

The main obstacle for adaptation of fabric selection through the Internet is that there is no objective selection method that is suitable for fashion fabrics. The purpose of this research is to develop an objective evaluation method for selecting fabrics through an online fabric database. The relationship between fabric mechanical properties and fabric drape was investigated. One hundred eighty-five commercial fabrics from different manufacturers were tested using the Kawabata fabric evaluation system (KES-FB) and Cusick drape tester. Applying regression analysis, the parameters that were significantly correlated with drape coefficient (DC) were determined. The test results, fabric structural parameters, and contact …

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An Examination Of The Relationship Between Environmental Science And Law Due To Emerging Micro-Scale Gas Chromatography Technology, Alfred Ruks Politzer Jan 2004

An Examination Of The Relationship Between Environmental Science And Law Due To Emerging Micro-Scale Gas Chromatography Technology, Alfred Ruks Politzer

LSU Master's Theses

The intersection of science and law is very complex. The two disciplines frequently interact due to environmental issues. Expert testimony is most often the method used to introduce scientific data into the legal system. Advances in technology have allowed scientists to increase the preciseness and reliability of data produced. The development of the gas chromatograph and the recent microFAST gas chromatograph has greatly increased the amounts of data available to the legal system. The legal system has relatively recently developed a set of guidelines with which to evaluate scientific evidence and determine whether it should be admitted into trial. Previously …

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Regional-Scale Eutrophication Models: A Bayesian Treed Model Approach, Angelina Freeman Jan 2004

Regional-Scale Eutrophication Models: A Bayesian Treed Model Approach, Angelina Freeman

LSU Master's Theses

Utilizing Bayesian hierarchical techniques, regional-scale eutrophication models were developed for use in the Total Maximum Daily Load (TMDL) process. The Bayesian tree-based (BTREED) approach allows association of multiple environmental stressors with biological responses, and quantification of uncertainty sources in the water quality model. Simple parametric models are often inadequate for describing complex datasets; the BTREED approach partitions the dataset, and describes the localized subsets of data with linear models, thereby providing a comprehensive representation of stressor and response interactions. Nutrient criteria data for lakes, ponds and reservoirs across the United States were obtained from the Environmental Protection Agency (U.S. EPA) …

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Estimating Impervious Surfaces From A Small Urban Watershed In Baton Rouge, Louisiana, Using Landsat Thematic Mapper Imagery, Kurt Johnson Jan 2004

Estimating Impervious Surfaces From A Small Urban Watershed In Baton Rouge, Louisiana, Using Landsat Thematic Mapper Imagery, Kurt Johnson

LSU Master's Theses

Many urban areas are using estimations of impervious surfaces as a means for better environmental management. This is because research over the last two decades indicate a consistent, inverse relationship between the percentage of impervious surfaces in a watershed and the environmental problems urban areas are experiencing. Although various methods for estimating impervious surfaces can be identified, few result in accurate and defensible estimations by which environmental problems can be assessed. This is especially important to rapidly expanding urban areas such as Baton Rouge, Louisiana where detailed records and planimetric data are lacking. Numerous studies have shown a potential for …

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Enhanced Flushing With Cyclodextrin For The Remediation Of Creosote Contaminated Soil, Monalisa Dutta Jan 2004

Enhanced Flushing With Cyclodextrin For The Remediation Of Creosote Contaminated Soil, Monalisa Dutta

LSU Master's Theses

Past practices of applying creosote and coal tar preservatives to wood, such as unlined pits and trenches, have resulted in contamination of the surface and ground water at thousand of sites. The low aqueous solubility, volatility and bioavailability of many these constituents limit their degradation by natural attenuation and standard remediation techniques such as ground water flushing, soil vapor extraction, and bioremediation. While research has shown that cyclodextrin solutions have the ability to enhance the solubility of some of the components of creosote, additional work is needed to evaluate its potential as a remedial agent for these sites. Equilibrium batch …

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Optimal Rate Of Freezing Biological Systems, Sreedhar Thirumala Jan 2004

Optimal Rate Of Freezing Biological Systems, Sreedhar Thirumala

LSU Master's Theses

This thesis addresses optimization techniques for cryopreservation of biological systems. A part of the thesis (Chapter 2) reports a simplified procedure to predict the optimal rate of freezing biological systems once the cell level parameters are known a priori. The key cell level parameters investigated were, reference permeability of the membrane to water (Lpg), apparent activation energy (ELp), inactive cell volume (Vb), diameter (D), and the ratio of the available surface area for water transport to the initial volume of intracellular water (SA/WV). The simplified procedure was developed by performing a thorough analysis of the water transport model over a …

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Joint Optimization Of Process Improvement Investments For Supplier-Buyer Cooperative Commerce, Erick Comeaux Jan 2004

Joint Optimization Of Process Improvement Investments For Supplier-Buyer Cooperative Commerce, Erick Comeaux

LSU Master's Theses

This research focuses on supporting the formation of strategic alliances through the concept of cooperative commerce, where suppliers and buyers work together to jointly optimize their businesses. The general goal of this research is to examine existing cooperative commerce models for obstacles that would hinder their successful implementation into modern industrial applications and to address those shortcomings. Total annual cost equations are formulated to capture the joint total relevant cost of cooperative commerce business relationships. These total joint relevant cost models will include terms that capture the ordering cost, holding cost, and cost of quality, as well as any applicable …

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Design, Fabrication And Thermomechanical Testing Of A Vertical Bimorph Sensor In The Wafer Plane, Madhulika Sathe Jan 2004

Design, Fabrication And Thermomechanical Testing Of A Vertical Bimorph Sensor In The Wafer Plane, Madhulika Sathe

LSU Master's Theses

A bimetallic recurve device was designed, fabricated and tested as a temperature sensor. The device is to be used for sensing temperatures up to 300 C inside oil wells for downhole condition monitoring. Continuous downhole measurements at high temperatures and pressures are required to monitor conditions downhole instruments are exposed to during use. Currently mercury thermometers and resistive temperature detectors (RTD) are used for downhole temperature measurements. Microsensors have potential application downhole, due to their small size and inherent robustness. The principle of a bimetallic beam was used to measure temperature. A bimetallic beam deflects with changes in temperature due …

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Asymptotic And Numerical Solutions For Diffusion Models For Compounded Risk Reserves With Dividend Payments, Sally S. L. Shao, C. L. Chang Jan 2004

Asymptotic And Numerical Solutions For Diffusion Models For Compounded Risk Reserves With Dividend Payments, Sally S. L. Shao, C. L. Chang

Mathematics and Statistics Faculty Publications

We study a family of diffusion models for compounded risk reserves which account for the investment income earned and for the inflation experienced on claim amounts. We are interested in the models in which the dividend payments are paid from the risk reserves. After defining the process of conditional probability in finite time, martingale theory turns the nonlinear stochastic differential equation to a special class of boundary value problems defined by a parabolic equation with a nonsmooth coefficient of the convection term. Based on the behavior of the total income flow, asymptotic and numerical methods are used to solve the …

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The Nonlinear Coupling Of Electromagnetic Ion Cyclotron And Lower Hybrid Waves In The Ring Current Region: The Magnetic Storm 1–7 May 1998, G. V. Khazanov, E. N. Krivorutsky, K. V. Gamayunov, L. A. Avanov Jan 2004

The Nonlinear Coupling Of Electromagnetic Ion Cyclotron And Lower Hybrid Waves In The Ring Current Region: The Magnetic Storm 1–7 May 1998, G. V. Khazanov, E. N. Krivorutsky, K. V. Gamayunov, L. A. Avanov

Aerospace, Physics, and Space Science Faculty Publications

The excitation of lower hybrid waves (LHWs) is a widely discussed mechanism of interaction between plasma species in space, and is one of the unresolved questions of magnetospheric multi-ion plasmas. In this paper we present the morphology, dynamics, and level of LHWactivity generated by electromagnetic ion cyclotron (EMIC) waves during the 2–7 May 1998 storm period on the global scale. The LHWs were calculated based on a newly developed selfconsistent model (Khazanov et. al., 2002) that couples the system of two kinetic equations: one equation describes the ring current (RC) ion dynamic, and another equation describes the evolution of EMIC …

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Evaluation Of The Human Impact Of Password Authentication Practices On Information Security, Deborah Sater Carstens, Pamela R. Mccauley-Bell, Linda C. Malone, Ronald F. Demara Jan 2004

Evaluation Of The Human Impact Of Password Authentication Practices On Information Security, Deborah Sater Carstens, Pamela R. Mccauley-Bell, Linda C. Malone, Ronald F. Demara

Aeronautics Faculty Publications

The research objective was to develop a model for evaluating the human impact that password authentication issues are having on the security of information systems. Through distributing a survey and conducting an experiment, researchers created a model for predicting the vulnerability that a particular set of conditions will have on the likelihood of error in an information system. The survey consisted of over 250 respondents. The experiment consisted of 30 subjects and the analysis utilized a χ2 goodness of fit test. The findings indicate that human error associated with password authentication can be significantly reduced through the use of passwords …

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Social Interaction And Reading Achievement Among Children In Poverty, Kendra M. Boykin Jan 2004

Social Interaction And Reading Achievement Among Children In Poverty, Kendra M. Boykin

OTS Master's Level Projects & Papers

The purpose of this study was to determine if there was a significant difference in the reading achievement of children in a Title I school between children with high social interaction and those with low social interaction after school.

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The Effectiveness Of The Freshman Academy At Oscar Smith High School In Chesapeake, Virginia, Maurice Frazier Jan 2004

The Effectiveness Of The Freshman Academy At Oscar Smith High School In Chesapeake, Virginia, Maurice Frazier

OTS Master's Level Projects & Papers

The goals of this study were to answer the following questions: 1. Does the completion of the Freshman Academy contribute to the reduction of negative behavior incidents by students? 2. Does the completion of the Freshman Academy contribute to higher overall class GPA? 3. Does the completion of the Freshman Academy contribute to an increase in overall school attendance? 4. Does the completion of the Freshman Academy contribute to an increase in the student's involvement in extra-curricular activities?

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ขยะอิเล็กทรอนิกส์, สิริพร แก่นสียา Jan 2004

ขยะอิเล็กทรอนิกส์, สิริพร แก่นสียา

Thai Environment

No abstract provided.

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Constructing Random Probability Distributions, Theodore P. Hill, David E.R. Sitton Jan 2004

Constructing Random Probability Distributions, Theodore P. Hill, David E.R. Sitton

Research Scholars in Residence

This article surveys several classes of iterative methods for constructing random probability distributions (or random convex functions, or random homeomorphisms), and includes illustrative applications in statistics, optimal-control theory, and game theory. Computer simulations of these methods are fast and easy to implement

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A 2-Chain Can Interlock With A K-Chain, Julie Glass, Stefan Langerman, Joseph O'Rourke, Jack Snoeyink, Jianyuan K. Zhong Jan 2004

A 2-Chain Can Interlock With A K-Chain, Julie Glass, Stefan Langerman, Joseph O'Rourke, Jack Snoeyink, Jianyuan K. Zhong

Computer Science: Faculty Publications

One of the open problems posed in [3] is: what is the minimal number k such that an open, flexible k-chain can interlock with a flexible 2-chain? In this paper, we establish the assumption behind this problem, that there is indeed some k that achieves interlocking. We prove that a flexible 2-chain can interlock with a flexible, open 16-chain.

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General Geology And Geochemistry Of Metamorphosed Proterozoic Mafic Dikes And Sills, Tobacco Root Mountains, Montana, John B. Brady, Heidi K. Mohlman, Caroline Harris, Sarah K. Carmichael, Lisa J. Jacob, Wilfredo R. Chaparro Jan 2004

General Geology And Geochemistry Of Metamorphosed Proterozoic Mafic Dikes And Sills, Tobacco Root Mountains, Montana, John B. Brady, Heidi K. Mohlman, Caroline Harris, Sarah K. Carmichael, Lisa J. Jacob, Wilfredo R. Chaparro

Geosciences: Faculty Publications

Just over two billion years ago, basaltic magma intruded rocks of the Pony– Middle Mountain Metamorphic Suite and the Indian Creek Metamorphic Suite that now crop out in the Tobacco Root Mountains of Montana near the northwestern margin of the Wyoming province. Numerous examples can be found of mafic dikes that crosscut layering and gneissic banding, demonstrating that the host rocks were metamorphosed to form the gneissic texture prior to intrusion of the dikes. Although many of the intrusions appear to be sills that followed compositional layering, close inspection reveals low-angle discordance in nearly every case, consistent with rotation of …

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The Application Of Back Propagation Neural Network In The Prognosis Of Breast Cancer / Hazlina Hamdan, Hamdan Hazlina Jan 2004

The Application Of Back Propagation Neural Network In The Prognosis Of Breast Cancer / Hazlina Hamdan, Hamdan Hazlina

Student Works (2000-2009)

Medical informatics is the application of computer technology, communications and information technology and system in medical fields. In Malaysia, medical informatics is a relatively young field, which is fast gaining popularity. This research is a step towards significant contributions in the field of medical informatics. Medical prognosis is a prediction of the future course and outcome of a disease and an indication of the likelihood of recovery from it. Prognosis can be used to monitor the progress of treatment programmes as an aid in choosing treatment types and suitable methodologies. Prognosis can also help patients and their relatives plan their …

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