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Glucocorticoid Regulation Of The Leptin Receptor Signaling System In The Rat., Abram Madimabe Madiehe Jan 2000

Glucocorticoid Regulation Of The Leptin Receptor Signaling System In The Rat., Abram Madimabe Madiehe

LSU Historical Dissertations and Theses

Obesity, a recognized health problem, is associated with cardiovascular disease, diabetes and hypertension. Removal of adrenal steroids by adrenalectomy (ADX) slows the development of obesity. Leptin decreases food intake through effects initiated by activation of the JAK-STAT pathway. Defects in leptin signaling lead to obesity, which is associated with hyperleptinemia and leptin resistance. In chapter 4, leptin induces phosphoenolpyruvate carboxykinase (PEPCK) mRNA expression and increases glucose production in hepatocytes from lean but not obese Zucker rats. This suggests that hyperleptinemia in obesity causes hyperglycemia. In chapter 5, ADX decreased the levels of PEPCK mRNA, and increased leptin receptor mRNA expression …

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Structure Determination Of Derivatized Disaccharides By Tandem Mass Spectrometry And Molecular Modeling., Sanford Louis Mendonca Jan 2000

Structure Determination Of Derivatized Disaccharides By Tandem Mass Spectrometry And Molecular Modeling., Sanford Louis Mendonca

LSU Historical Dissertations and Theses

This research entails the synthesis of derivatized disaccharides, mass spectrometry studies for structural elucidation of the synthetic disaccharides and molecular modeling of the native and derivatized disaccharides. Peralkylated (methyl to pentyl), peresterifed and tert-butyl-dimethyl silylated linkage isomeric glucose-glucose disaccharides were synthesized to eventually be used in mass spectrometry studies. In this dissertation, mass spectrometry was used to examine anomeric pair discrimination of two sets of peralkylated (methyl to pentyl) disaccharides (maltose/cellobiose and isomaltose/gentiobiose). This was carried out by electrospray ionization and collision experiments on a triple quadrupole mass spectrometer. In addition, effects of alkyl substitution on cleavage of the glycosidic …

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Attentional And Judgement Biases Associated With Body Weight Preoccupation In Children And Adolescents., Stephanie Lynn Muller Jan 2000

Attentional And Judgement Biases Associated With Body Weight Preoccupation In Children And Adolescents., Stephanie Lynn Muller

LSU Historical Dissertations and Theses

Most cognitive behavioral theories of the eating disorders emphasize the influences of beliefs and attitudes related to body weight and shape on the development and maintenance of pathological eating and weight control behaviors. Recent research has found support for the theories and specifically for the presence of attentional, judgement, and memory biases in individuals diagnosed with eating disorders as well as women who are preoccupied with body weight (Williamson, Muller, Reas, & Thaw, 1999). This research has focused almost without exception on adult populations. However, eating disorders as well as preoccupation with body size and shape have increased in preadolescent …

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Host And Parasite Interactions Among Three Symbionts: Pocket Gophers, Chewing Lice, And Endosymbiotic Bacteria., David Lee Reed Jan 2000

Host And Parasite Interactions Among Three Symbionts: Pocket Gophers, Chewing Lice, And Endosymbiotic Bacteria., David Lee Reed

LSU Historical Dissertations and Theses

This study investigates the patterns of cophylogeny documented between pocket gophers (Rodentia: Geomyidae) and their ectoparasitic chewing lice (Phthiraptera: Trichodectidae). The first two chapters investigate the mechanisms that reinforce cospeciation in this system. Chapter one examines whether mammalian hair diameter is a resource tracked by chewing lice, and thus reinforces the patterns of cospeciation. I found that hair diameter of pocket gophers is correlated with gopher body size and the body size of the ectoparasitic chewing lice. Hair diameter also is correlated with size of the rostral groove, which chewing lice use to grasp hair shafts of pocket gophers. In …

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Hydrodynamics, Bottom Boundary Layer Processes And Sediment Transport On The South-Central Louisiana Inner Shelf: The Influence Of Extratropical Storms And Bathymetric Modification., David Alton Pepper Jan 2000

Hydrodynamics, Bottom Boundary Layer Processes And Sediment Transport On The South-Central Louisiana Inner Shelf: The Influence Of Extratropical Storms And Bathymetric Modification., David Alton Pepper

LSU Historical Dissertations and Theses

The south-central Louisiana inner shelf has several distinctive characteristics that are not well accounted for by common hydrodynamic and sediment transport models, including a high-frequency wave regime, low fair-weather hydrodynamic energy levels, a coastal orientation parallel to most storm approaches, and a prominent submerged sand body (Ship Shoal). To address these unique considerations, inner-shelf processes were studied using three instrumentation systems deployed on the seaward and landward sides of the shoal between November, 1998 and January, 1999. These instruments were designed to measure hydrodynamic characteristics, suspended sediment concentration, and bed level, which were used to calculate bottom boundary layer parameters …

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An Inquiry Into The Impact Of The Regrow Reading /Writing Strategy On Comprehension In A Community College Setting., Angel Michele Royal Jan 2000

An Inquiry Into The Impact Of The Regrow Reading /Writing Strategy On Comprehension In A Community College Setting., Angel Michele Royal

LSU Historical Dissertations and Theses

The purpose of this study was to examine the impact of the REGROW reading/writing strategy on the comprehension of community college students enrolled in a Developmental English course. The study looked specifically at (a) reading and writing as processes, (b) traditional reading comprehension strategies, (c) traditional direct writing instruction, and (d) the impact of the REGROW reading/writing strategy on comprehension. The focus of this study was to conduct six mini-case studies on students classified as below average, average, and above average, and to track their actions when exposed to direct writing instruction and the REGROW reading/writing strategy. By providing in-depth …

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Evaluating Alternative Instructional Strategies To Improve Sixth Graders' Reading Comprehension., Emma Mccall Schorzman Jan 2000

Evaluating Alternative Instructional Strategies To Improve Sixth Graders' Reading Comprehension., Emma Mccall Schorzman

LSU Historical Dissertations and Theses

Although little empirical evidence supporting various instructional strategies for teaching reading comprehension exists, many educators utilize particular strategies assuming their effectiveness. Because difficulties with comprehension are intensified as students reach the intermediate grades, it is necessary that middle school educators instruct using strategies empirically supported through research. This mixed-method study examined the effectiveness of the Directed Reading-Thinking Activity (Stauffer, 1969), the PreP technique (Langer, 1981), and graphic organizers (Barron, 1969), three popular strategies among middle school teachers. Six teachers participated in the two-group design, pretest/posttest study; over a seven-week period, three of the teachers instructed their sixth-grade students using lessons …

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An Intelligent Failure Analysis System., Claude Ray Mount Jan 2000

An Intelligent Failure Analysis System., Claude Ray Mount

LSU Historical Dissertations and Theses

The investigation of commercial/industrial failures is a vital, but complex task. This paper presents an Intelligent Failure Analysis System (aIFAS). It is a system designed by a failure analyst with the goal of making failure investigation easier. The knowledge base for aIFAS comes from commercial laboratory reports. The methodologies employed represents the experience gained from over five years of development. One goal of aIFAS is to provide a case-based expert system tool to help find answers. Functionality ranges from matching a new case to stored example cases to extracting relational data from the aIFAS knowledge base. This study focuses on …

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Effects Of A Low -Protein Diet Supplemented With Coated And Uncoated Methionine On Methionine Metabolism In The Tilapia Oreochromis Niloticus., Manuel Alberto Segovia-Quintero Jan 2000

Effects Of A Low -Protein Diet Supplemented With Coated And Uncoated Methionine On Methionine Metabolism In The Tilapia Oreochromis Niloticus., Manuel Alberto Segovia-Quintero

LSU Historical Dissertations and Theses

Crude protein is the most expensive macronutrient, the use of plant proteins and crystalline amino acid supplementation is the next logical step to increase nutritional value of plant-based diets. The goal of this experiment was to determine the effect of coated and uncoated crystalline methionine on growth, body composition, and methionine uptake in Nile tilapia Oreochromis niloticus fed methionine supplements. Two experiments were designed for this purpose: one to study the effect of supplementation on weight gain and body composition, and a second to determine the effect of coating on absorption efficiency and utilization of crystalline methionine. Five isonitrogenous (26% …

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School Life On The Mississippi: An Inquiry Into The Impact Of The Louisiana Reform Movement Related To Standards In World History Instruction In Three Secondary School Settings., Michael Joseph Schramm Jan 2000

School Life On The Mississippi: An Inquiry Into The Impact Of The Louisiana Reform Movement Related To Standards In World History Instruction In Three Secondary School Settings., Michael Joseph Schramm

LSU Historical Dissertations and Theses

The purpose of this study was to explore the impact of standards on the instruction of world history in three secondary school settings. Contact with the Department of Education of the State of Louisiana found that the implementation of standards had only begun in 1997. After a grace period for implementation, the inaugural testing of the accountability system for these standards occurred in the spring of 2000. Therefore, this study became an exploratory investigation into the use of standards as they impact world history instruction. The first research question was designed to assist the researcher in exploring the influence that …

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On Stochastic Integration For White Noise Distribution Theory., Said Kalema Ngobi Jan 2000

On Stochastic Integration For White Noise Distribution Theory., Said Kalema Ngobi

LSU Historical Dissertations and Theses

This thesis consists of two parts, each part concentrating on a different problem from the theory of Stochastic Integration. Chapter 1 contains the introduction explaining the results in this dissertation in general terms. We use the infinite dimensional space S'R endowed with the gaussian measure mu. The Hilbert space ( L2) is defined as (L2) (L2) ≡ L2( S'R , mu) and our results are based on the Gel'fand triple ( S )beta ⊂ (L2) ⊂ S* b . The necessary preliminary background in white noise analysis are well elaborated in Chapter 2. In Chapter 3 we present a generalization …

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The Relationship Between On -Campus Interactions And Retention Of African American Students At Predominantly White Institutions., Catherine Martin Jan 2000

The Relationship Between On -Campus Interactions And Retention Of African American Students At Predominantly White Institutions., Catherine Martin

LSU Historical Dissertations and Theses

This study examined the relationships between on-campus interactions and African American retention decisions. Specifically, qualitative research methods were used to better understand how interactions between African American students and others (staff, faculty, and peers) on a predominantly white campus shaped African American students' realities and, consequently, how those realities influenced their decisions to persist through degree completion. The population for this study was African American students attending Southeastern Louisiana University (SLU). The sample was composed of 20 African American students who were enrolled in a 4-year degree program at SLU and in good academic standing. The sampling technique utilized in …

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The History Of Our Lady Of The Lake College, 1923--2000: A Study Of Organizational Change., Linda Carol Rakestraw Pendergast Jan 2000

The History Of Our Lady Of The Lake College, 1923--2000: A Study Of Organizational Change., Linda Carol Rakestraw Pendergast

LSU Historical Dissertations and Theses

This qualitative research study investigated the history of Our Lady of the Lake College from 1923 through 2000. It endeavored to determine the influence of the times, the events, the people, and the traditions that have contributed to its development and progress in the seventy-seven years that have passed since it was established. The study also sought to document the important institutional events that transpired during this time period and establish a continuity of the College's progress through the years from a hospital-based diploma program in nursing to a free standing degree granting institution. In addition to the evolutionary development …

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Electron Paramagnetic Resonance And High Temperature Susceptibility Measurements In Cesium Hexabromide., Cabir Terzioglu Jan 2000

Electron Paramagnetic Resonance And High Temperature Susceptibility Measurements In Cesium Hexabromide., Cabir Terzioglu

LSU Historical Dissertations and Theses

To our knowledge the research reported here represents the first attempt to understand the 4f electronic structure in CeB6 using EPR. We report extensive temperature and angular dependent EPR measurements on a single crystal of CeB6 in the paramagnetic phase from 4 to 300 K at 35, 95, and a few measurements at 220 GHz. The 35 GHz measurements were performed at LSU and the 95 and 220 GHz measurements were performed at the National High Magnetic Field Laboratory, Tallahassee, FL. These experiments were made using a standard microwave frequency-locked spectrometer and magnetic field modulation. The measurements are supplemented by …

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The Impact Of Implementing Metacognitive Strategies On Instructional And Experiential Scaffolding., Frances Ann Steward Jan 2000

The Impact Of Implementing Metacognitive Strategies On Instructional And Experiential Scaffolding., Frances Ann Steward

LSU Historical Dissertations and Theses

The purpose of the mixed multiple case study was to explore scaffolding at home and school. Strategic instructional procedures, metacognitive strategies use, and homework procedures were examined during reading instruction and home assistance for progress. The participants are as follows: (a) The three principals setting the school's instructional tone; (b) The three reading teachers providing modeling, coaching, and encouragement during lesson presentation and feedback; (c) The six students (two fifth graders in each of the three reading classrooms) depending upon assistance for comprehension task completion; and (d) The six family members assisting with homework. The school sites were selected with …

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Cultural Adjustment Of Foreign Students In An Institution Of Higher Education., Bridget Oscar Udoh Jan 2000

Cultural Adjustment Of Foreign Students In An Institution Of Higher Education., Bridget Oscar Udoh

LSU Historical Dissertations and Theses

Foreign students frequently encounter problems in adjusting to their new social environment when studying at institutions of higher education. The purpose of this study was to describe the level of social difficulty experienced by foreign students from different regions of the world while studying in the United States. The target population for this study consisted of 748 undergraduate foreign students enrolled at Louisiana. State University (LSU) in the spring of 2000. The accessible population was all students enrolled in English as a Second Language (ESL). The sample consisted of the 178 undergraduate students enrolled in English 1004 and 1005 (ESL) …

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Structure, Expression And Promoter Activity Of Ubiquitin Genes From Rice (Oryza Sativa L.)., Jianlin Wang Jan 2000

Structure, Expression And Promoter Activity Of Ubiquitin Genes From Rice (Oryza Sativa L.)., Jianlin Wang

LSU Historical Dissertations and Theses

Successful transgenic plant production is largely dependent on the use of suitable promoters. In this study, we described isolation of rice ubiquitin genes, and demonstrated the potential utility of the rice ubiquitin promoters in plant transformation systems. Two polyubiquitin genes (RUBQ1 and RUBQ2) and two ubiquitin extension/fusion genes (RUBQ3 and RUBQ4) have been isolated from a rice genomic BAC library. DNA sequence data revealed that both RUBQ1 and RUBQ2 contained an open reading frame encoding a hexameric precursor ubiquitin and an intron immediate upstream of the initiation codon. The two ubiquitin fusion/extension genes RUBQ3 and RUBQ4 contained one repeat of …

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Critical Connections: Meaningful Mentoring Relationships Between Women Doctoral Students And Their Dissertation Chairpersons., Dawn Deann Wallace Jan 2000

Critical Connections: Meaningful Mentoring Relationships Between Women Doctoral Students And Their Dissertation Chairpersons., Dawn Deann Wallace

LSU Historical Dissertations and Theses

The purpose of this research is to explore meaningful mentoring relationships between women doctoral students and their advisors. Specifically, this study examines how graduate women and their advisors navigate and perceive their mentoring relationships during the doctoral program of study. Although research in higher education has addressed the lived experiences of women doctoral students, few have examined the doctoral student/advisor mentoring dynamic from both the student and advisor perspectives. This study provides an understanding of the mentoring experiences of women doctoral students and advisors through qualitative conversation. The participants in the study are 6 women post-doctoral students and their advisors, …

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Non -Intrusive Characterization Of A Dispersed, Bubbly, Axisymmetric Jet., Kevin Nathaniel Stanley Jan 2000

Non -Intrusive Characterization Of A Dispersed, Bubbly, Axisymmetric Jet., Kevin Nathaniel Stanley

LSU Historical Dissertations and Theses

This study investigated the effects of bubble size and phase distribution on the liquid and bubble flow fields in a dispersed, bubbly axisymmetric jet. Of primary interest was the interaction of the bubbles with large-scale structures in the developing region of the jet. Measurements were made non-intrusively via Laser Doppler Velocimetry (LDV), Phase-Doppler Analysis (PDA) and video imaging techniques. Liquid Reynolds' numbers were varied from approximately 6,000 to 18,000 while gas volume fraction ranged from 0 to 3%. Bubble sizes varied from approximately 600 mum to 1500 mum. Axial mean velocities and RMS fluctuations have been reported for the liquid …

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Kate Chopin's Contribution To Realism And Naturalism: Reconsiderations Of W. D. Howells, Maupassant, And Flaubert., Jean Ann Witherow Jan 2000

Kate Chopin's Contribution To Realism And Naturalism: Reconsiderations Of W. D. Howells, Maupassant, And Flaubert., Jean Ann Witherow

LSU Historical Dissertations and Theses

No one has previously undertaken a detailed examination of Kate Chopin's documented intertextuality with writers such as W. D. Howells, Hamlin Garland, Maupassant, and Flaubert. My purpose is to examine Chopin's works in the context of writers with whom she interacts and so to reveal her impact on the development of literary realism and naturalism. My study reveals that, though her mature writing eliminates sentimentalism, she never abandons romance elements residual from her youth. Her typically subjective narrator removes narrative authority, intensifies our involvement with characters, and validates the marginalized voice. Darwin and the philosophers temper her Catholicism, yet she …

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Prospective Memory: Contributions Of Age, Individual Differences, And Metamemory., Celinda M. Reese Jan 2000

Prospective Memory: Contributions Of Age, Individual Differences, And Metamemory., Celinda M. Reese

LSU Historical Dissertations and Theses

The influence of age, ability, monitoring, and metamemory on event-based prospective memory was examined using an adapted version of G. O. Einstein and M. A. McDaniel's (1990) task. Two samples of younger and older adults who differed in educational attainment and verbal ability were compared. Contrary to previous research (Cherry & LeCompte, 1999), the age/ability groups did not differ on prospective memory performance. On-line monitoring ratings were not related to prospective memory but posttest monitoring ratings were. Age differences in reports of task-irrelevant thoughts emerged from the on-line monitoring data. Although age and ability group differences on self-reports of memory …

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Effects Of Reading Styles On African-American Preschoolers Of Disadvantage., Elizabeth Nowlin Witt Jan 2000

Effects Of Reading Styles On African-American Preschoolers Of Disadvantage., Elizabeth Nowlin Witt

LSU Historical Dissertations and Theses

This study investigated the effects of two styles of storybook reading within the storybook reading event (SBRE) upon African-American preschoolers of disadvantage (AAP-D). One style, performance-oriented, was thought to be closer to cultural frameworks familiar for this population. This style was contrasted with the interactive style familiar to children of middle-class. Each style was utilized with two groups of five children (ten children per condition) across three storybooks, which were each read six times. Pre- and posttesting were used to determine changes in language (semantic and discourse ability, as measured by retelling), literacy, and world knowledge. A control group of …

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Locally Owned And Operated: Opposition To Chain Stores, 1925--1940., Cory Lewis Sparks Jan 2000

Locally Owned And Operated: Opposition To Chain Stores, 1925--1940., Cory Lewis Sparks

LSU Historical Dissertations and Theses

During the 1920s, chain stores exploded in numbers throughout the country. Chains claimed to provide mass distribution for a mass production age. According to their executives, traditional retailing raised the cost of living and interfered with prosperity. Small retailers countered these claims by arguing that corporate retailing endangered prosperity because it concentrated ownership in the hands of a few and stripped wealth from the local community. In 1929 and 1930, anti-chain radio broadcasts sparked popular interest in the chains. Critics accused the chains of using their financial might to sell products below cost and drive competitors out of business. They …

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A Study Of The Potential Use Of Asphalt Containing Synthetic Polymers For Asphalt Paving Mixes., Pei-Hung Yeh Jan 2000

A Study Of The Potential Use Of Asphalt Containing Synthetic Polymers For Asphalt Paving Mixes., Pei-Hung Yeh

LSU Historical Dissertations and Theses

Chemically modified polymer derivatives of potentially useful polymer modifiers from solid wastes, i.e. polyolefins or EPDM, were prepared by chlorination or maleation to improve asphalt blend compatibility. Chlorination of polyethylene can be controlled to convert crystalline HDPE into semicrystalline polymeric additives. Environmental scanning electron microscopy shows that dispersed CPE rich phase was larger than the HDPE rich phase in asphalt blends. Introducing chlorine atoms on polyethylene chains can improve compatibility of the asphalt-polymer blends through adjusting interaction between the components of asphalt and polymer. The grafting of maleic anhydride to polyolefins or EPDM was carried out either in solution or …

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Oxidation -Reduction Chemistry Of Methane And Nitrous Oxide In Soils And An Approach To Minimize Their Emissions From Irrigated Rice Fields., Kewei Yu Jan 2000

Oxidation -Reduction Chemistry Of Methane And Nitrous Oxide In Soils And An Approach To Minimize Their Emissions From Irrigated Rice Fields., Kewei Yu

LSU Historical Dissertations and Theses

Rice fields are an important source of the greenhouse gases methane (CH 4) and nitrous oxide (N2O). In this dissertation study, experiments were conducted at three levels---in soil suspensions, in soil cores, and under actual field conditions, to investigate the impact of soil redox potential on CH4 and N2O emissions to the atmosphere. Methane and N2O emissions occurred at distinctively different redox conditions in the homogenous soil suspensions. No significant amounts of CH4 was produced when the soil redox potentials were above -150 mV. In the denitrification process, both N2O production and reduction occurred in the soil redox potential range …

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Stratigraphy, Petrology, And Geochemistry Of A Mid-Oceanic Carbonate Platform: Niue Island, South Pacific., Christopher Waldo Wheeler Jan 2000

Stratigraphy, Petrology, And Geochemistry Of A Mid-Oceanic Carbonate Platform: Niue Island, South Pacific., Christopher Waldo Wheeler

LSU Historical Dissertations and Theses

Mid-oceanic carbonate platforms offer a simple setting to study the essentials of dolomitization. One such platform is Niue Island, a former coral atoll capping a Miocene-age seamount in the South Pacific. Samples from 6 wells (≤303 m depth) and 3 outcrops reveal two dolomite bodies at -300 to -165 m (Lower Dolomite Unit, LDU) and -30 to +50 m (Upper Dolomite Unit, UDU) elevation. Paleomagnetism and strontium isotope chronostratigraphy place the depositional age of the uppermost 340 m at 8.6--1.7 Ma. Generally decreasing accretion rates (62--19 m/Ma) are consistent with subsidence of an extinct seamount. The distribution of early meteoric …

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A Class Of Stable, Globally Noniterative, Nonoverlapping Domain Decomposition Algorithms For The Simulation Of Parabolic Evolutionary Systems., Yu Zhuang Jan 2000

A Class Of Stable, Globally Noniterative, Nonoverlapping Domain Decomposition Algorithms For The Simulation Of Parabolic Evolutionary Systems., Yu Zhuang

LSU Historical Dissertations and Theses

Parabolic systems are governed by time dependent partial differential equations. To obtain a high simulation quality that captures important features of a parabolic system requires solving the governing equation to an adequate accuracy, which necessitates a large sampling size in the spatial and temporal dimensions, and hence a large amount of simulation data and high computing cost. Domain decomposition is an effective method of divide-and-conquer paradigm that divides the problem domain into several subdomains, reducing the original problem into several smaller interdependent problems which can be solved in parallel. In this dissertation, we propose a class of stabilized explicit-implicit time …

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Efficient Iterative Synthesis Of Oligophenylene Rods And Methodology Studies Involving Aryldiazonium Tetrafluoroborate Salts And Arylboronic Esters., Douglas Macarthur Willis Jan 2000

Efficient Iterative Synthesis Of Oligophenylene Rods And Methodology Studies Involving Aryldiazonium Tetrafluoroborate Salts And Arylboronic Esters., Douglas Macarthur Willis

LSU Historical Dissertations and Theses

Suzuki coupling protocols were applied towards the design and subsequent iterative synthesis of oligophenylene rods bearing polar functional groups. These well-defined, polar-functionalized rigid rods were ultimately constructed using an efficient iterative molecular doubling approach without using protecting groups, boronic acid isolations, Grignard or organolithium reactions or preparative chromatographic methods. Currently, these rods are being appended to resorcinarene macrocyclic scaffolds in efforts towards achieving a controlled synthesis of novel, uniform, three-dimensional, electronic directional materials with extended, highly functional lower aromatic cavities. Unique methodology studies involving aryldiazonium tetrafluoroborate salts and arylboronic esters were also contrived and investigated. A novel procedure for the …

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Well Integrity Mechanism, Failure, And Testing In Shallow Marine Sediments., Desheng Zhou Jan 2000

Well Integrity Mechanism, Failure, And Testing In Shallow Marine Sediments., Desheng Zhou

LSU Historical Dissertations and Theses

The leak-off test (LOT) is an in-situ method for testing casing shoe integrity in a well. It is used to evaluate the cement and formation integrity relative to the well plan specifications. The results determine whether any remedial cementing or corrective actions are required and are a basis for planning future wells in the area. Typical analysis of LOTs assumes an elastic wellbore and involves identification of linear trends on the recorded plots. However, LOTs recorded in shallow marine sediments (SMS) are inherently nonlinear and their analysis is a problem. Starting from the analyses of shallow soil properties, LOT plots, …

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An Information Theoretic Approach To Content Based Image Retrieval., John Morris Zachary Jr Jan 2000

An Information Theoretic Approach To Content Based Image Retrieval., John Morris Zachary Jr

LSU Historical Dissertations and Theses

We propose an information theoretic approach to the representation and comparison of color features in digital images to handle various problems in the area of content-based image retrieval. The interpretation of color histograms as joint probability density functions enables the use of a wide range of concepts from information theory to be considered in the extraction of color features from images and the computation of similarity between pairs of images. The entropy of an image is a measure of the randomness of the color distribution in an image. Rather than replacing color histograms as an image representation, we demonstrate that …

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