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Production Of Transgenic Eastern Oysters., John Terrell Buchanan Jan 1999

Production Of Transgenic Eastern Oysters., John Terrell Buchanan

LSU Historical Dissertations and Theses

The eastern oyster, Crassostrea virginica, supports a valuable industry in the United States and Louisiana. In recent years this industry has been plagued by diseases, creating interest in the use of gene transfer to produce oysters capable of eliminating pathogens. The goal of this work was to develop techniques for laboratory research of eastern oysters, and for transfer of genes to oyster gametes, larvae, and adults. Cell culture provides an effective alternative to work in whole animals. Cell attachment and spreading on various culture substrates was improved, and poly-D-lysine was identified as a superior substrate. Toxicity of the antibiotic G418 …

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Territoriality And Commerce: Political Conflict Over The Panama Canal In Geographic Perspective., Robert William Aguirre Jan 1999

Territoriality And Commerce: Political Conflict Over The Panama Canal In Geographic Perspective., Robert William Aguirre

LSU Historical Dissertations and Theses

This dissertation examines the recurring conflict between the United States and the Republic of Panama regarding the Canal and the Canal Zone by analyzing three salient geographic issues: first, the extent to which international commerce or national security required the building of a canal in Central America; second, ambiguities arising out of notions of sovereignty and extraterritoriality in United States constitutional law; and third, the political controversies between an inland society and a maritime society in Panama itself The theoretical implications of Edward Fox's work in his geographic history of French politics and the works of Panamanian historians and sociologists …

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Toxicity Of Neem-Based Insecticides On Aquatic Animals And Cell Lines., Ipek Goktepe Jan 1999

Toxicity Of Neem-Based Insecticides On Aquatic Animals And Cell Lines., Ipek Goktepe

LSU Historical Dissertations and Theses

The impact of pure azadirachtin (AZA) and neem-based insecticides (Neemix(TM) and Bioneem(TM)) on eight aquatic animals (crayfish, white shrimp, grass shrimp, blue crab, water fleas, oyster, freshwater snails, and mosquito) and two cells (hybridoma and oyster) were assessed by short term acute toxicity tests of 48 and 96 h. The LC50 (in vivo bioassays) and IC50 (in vitro bioassays) were determined for each species. Stability of (Neemix(TM) and Bioneem(TM)) was tested under light, air, and heat (24 and 37°C) for 1, 3, 6, and 9 days. Neemix(TM) and Bioneem(TM)) were fractionated into two fractions (volatiles and nonvolatiles) and toxicities of …

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Molecular Genetics And Functions Of Herpes Simplex Virus Type 1 (Hsv-1) Glycoprotein K (Gk) In The Morphogenesis Of Infectious Virion Particles., Timothy Paul Foster Jan 1999

Molecular Genetics And Functions Of Herpes Simplex Virus Type 1 (Hsv-1) Glycoprotein K (Gk) In The Morphogenesis Of Infectious Virion Particles., Timothy Paul Foster

LSU Historical Dissertations and Theses

Herpes simplex virus type 1 (HSV-1) specifies at least 11 glycoproteins that are expressed in infected cells and in virions. HSV-1 enters into cells via fusion of the viral envelope with cellular membranes and can spread to adjacent cells via fusion of cellular membranes. Glycoproteins gB, gD, gH, and gL are known to be essential for virus entry, virus spread, and virus induced cell-to-cell fusion. The majority of spontaneous single amino acid changes that cause extensive cell fusion map within the UL53 gene encoding glycoprotein K (gK); however, the role of gK in virus entry and virus egress had not …

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Relating Process Philosophy To The Classroom: An Exploration Of Alfred North Whitehead's Educational Vision., Janis Pardue Hill Jan 1999

Relating Process Philosophy To The Classroom: An Exploration Of Alfred North Whitehead's Educational Vision., Janis Pardue Hill

LSU Historical Dissertations and Theses

This dissertation is an exploration of the connections between the process philosophy and the educational thinking of Alfred North Whitehead. It develops the theory that Whitehead's philosophy of process is evident in "embryonic" form in his earlier educational writings, as well as The Aims of Education and Other Essays (1929), and that the complexities of process thinking are as intertwined and interconnected with the principles of process educational thought as the actual entity is intertwined and interconnected with the complex relations involved in its concrescence. The ultimate aim is to provide a clear picture of Whitehead's vision of education and …

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Family Portraits: Contemporary Women Novelists And The Nuclear Family., Tamra Lynn Horton Jan 1999

Family Portraits: Contemporary Women Novelists And The Nuclear Family., Tamra Lynn Horton

LSU Historical Dissertations and Theses

A society whose economy becomes increasingly dependent on commodity fetishism cultivates obsessive materialistic desire in its subjects. The demand for mass consumerism buoys reification, a mania wherein human beings are analogous to goods and vice versa. Successful reification depends upon hegemonic apparatuses: social, legal, and political agencies of dominant ideology. Reification is perhaps most fully realized in the form of fetishized human relationships. In the United States today, the most coercive and unassailable hegemonic apparatus is the institutionalized nuclear family, a social and legal affiliation between individuals so dogmatically fetishized as to have become compulsory. Contemporary American women writers are …

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Development Of Efficient Rice Dna Transformation Methods And Rapid Evaluation Of Transgenic Lines., Junda Jiang Jan 1999

Development Of Efficient Rice Dna Transformation Methods And Rapid Evaluation Of Transgenic Lines., Junda Jiang

LSU Historical Dissertations and Theses

A rapid and efficient method was developed for production and field evaluation of transgenic herbicide resistant elite U.S. rice (Oryza sativa L.) lines and cultivars. Six elite U.S. rice lines, including the cultivar Cocodrie, were transformed for glufosinate (phosphinothricin) herbicide resistance by particle bombardment of mature seed-derived embryogenic calli with a synthetic pat gene or the bar gene from Streptomyces hygroscopicus. By utilizing optimized media for embryogenic callus induction and bialaphos or hygromycin B as a selection agent, 258 independent transformed calli, producing 1268 transgenic plants, were recovered from 5201 bombarded calli. Transformation efficiency ranged from 5% for breeding line …

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Picosecond Resonance Raman Studies Of Interligand Electron Transfer Rates Of Ruthenium Polypyridal Complexes., Danny Ray Anderson Jan 1999

Picosecond Resonance Raman Studies Of Interligand Electron Transfer Rates Of Ruthenium Polypyridal Complexes., Danny Ray Anderson

LSU Historical Dissertations and Theses

Interest in ruthenium polypyridal complexes stems from the metal-to-ligand charge transfer state (MLCT) that can be generated by photons of sufficient energy and the interligand electron transfer (ILET) that occurs after this state. Direct measurements using picosecond resonance Raman spectroscopy were made to determine the rates of ILET in a series of mixed ligand ruthenium polypyridal complexes. To perform these studies, a novel regenerative amplified Nd:YAG laser system had to be designed and built at Louisiana State University. Once this system was completed, a apparatus was designed for measuring transient absorption spectra in the 200--300 nm wavelength range on a …

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Factors Influencing Effectiveness Of Exhibit Displays On Family Learning In A Public Aquarium., Kodi Rae Jeffery Jan 1999

Factors Influencing Effectiveness Of Exhibit Displays On Family Learning In A Public Aquarium., Kodi Rae Jeffery

LSU Historical Dissertations and Theses

An important goal in science education reform is to create a scientifically literate society. The American Association for the Advancement of Science (1989b) has stated that for people to understand biology, they must first have personal experiences with it. There are severe limitations on the types of firsthand biology experiences available in the classroom. Informal learning institutions, however, are not limited by these constraints. Visitors enjoy a free-choice environment, where they can thoroughly explore things unavailable in most classrooms. Thus, museums are key resources that may help society achieve scientific literacy. This study asked what aspects of the Aquarium of …

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Mass Spectrometry Of Biomolecules. Part A: Gas-Phase Thermochemical And Structure Determinations Of Mononucleotides. Part B: Analysis Of Hydrophobic Peptides And Proteins By Matrix -Assisted Laser Desorption /Ionization Time -Of -Flight Mass Spectrometry., Kari Beth Green-Church Jan 1999

Mass Spectrometry Of Biomolecules. Part A: Gas-Phase Thermochemical And Structure Determinations Of Mononucleotides. Part B: Analysis Of Hydrophobic Peptides And Proteins By Matrix -Assisted Laser Desorption /Ionization Time -Of -Flight Mass Spectrometry., Kari Beth Green-Church

LSU Historical Dissertations and Theses

The use of mass spectrometry for thermochemical and structural determinations of mononucleotides is presented in Part A of this work, and the analysis of hydrophobic peptides and proteins are presented in Part B of this work. The goal of Part A is to examine thermochemical and structural properties of (deoxy)nucleoside 5'- and 3'-monophosphates. Part A consists of three groups of experiments. The first set of experiments utilized the kinetic method with a fast-atom bombardment source and a double focusing sector mass analyzer. Conformational analysis and semi-empirical calculations of mononucleotides were performed for the second set of experiments. The third set …

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Capability Of Recombinant Insect Viruses For Environmental Persistence And Transport., Yihua Lee Jan 1999

Capability Of Recombinant Insect Viruses For Environmental Persistence And Transport., Yihua Lee

LSU Historical Dissertations and Theses

Wild-type and recombinant nucleopolyhedroviruses (NPVs) were compared with respect to their capability to produce epizootics in Trichoplusis ni (Hubner) larvae infesting collards in a greenhouse microcosm. Viruses tested were variants of Autographa californica (Speyer) NPV (AcNPV): wild-type virus (AcNPV.WT), AcNPV expressing a scorpion toxin (AcNPV.AaIT), and AcNPV expressing juvenile hormone esterase (AcJHE.SG). Epizootics of AcNPV.WT lasted 8 weeks after a single viral release in the replicated, greenhouse micro-plots. AcJHE.SG epizootics also lasted 8 weeks after viral release, but this virus and AcNPV.AaIT were both out-competed by AcNPV.WT. AcNPV.AaIT was no longer detected in the T. ni population by the fourth …

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Executive Compensation, Performance, Board And Ownership Structure: A Simultaneous Equations Approach., Ayalew A. Lulseged Jan 1999

Executive Compensation, Performance, Board And Ownership Structure: A Simultaneous Equations Approach., Ayalew A. Lulseged

LSU Historical Dissertations and Theses

Incentive contracts and monitoring by boards of directors and blockholders are alternative internal mechanisms to ensure that managers act in the interests of shareholders. Most prior research on compensation and performance ignores endogeneity among board, ownership and compensation structure (mix of pay) variables. Ignoring the endogeneity leads to inconsistent parameter estimates. I address the endogeneity problem by using a simultaneous equations model. The three equations in the system are mix of pay, compensation and performance. The results are consistent with efficient contracting. Mix of pay depends on characteristics of the firm and alternative governance mechanisms. The relation between stockholders and …

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College Students' Understanding Of Stereochemistry: Difficulties In Learning And Critical Junctures., Gary Lester Lyon Jan 1999

College Students' Understanding Of Stereochemistry: Difficulties In Learning And Critical Junctures., Gary Lester Lyon

LSU Historical Dissertations and Theses

Because stereochemistry is an important part of both high school and college chemistry curricula, a study of difficulties experienced by students in the learning of stereochemistry was undertaken in a one-semester college organic chemistry course. This study, conducted over the course of two semesters with more than two hundred students, utilized clinical interviews, concept maps, and student journals to identify these difficulties, which were then tabulated and categorized. Although student journals were not a productive source of information, the types of difficulties that emerged from the concept maps were compared and contrasted with those that emerged from the clinical interviews. …

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College Choice: Psychological Factors Influencing *Postsecondary Aspirations And Expectations Of Ninth-Grade Students., Stuart Earle Johnson Jan 1999

College Choice: Psychological Factors Influencing *Postsecondary Aspirations And Expectations Of Ninth-Grade Students., Stuart Earle Johnson

LSU Historical Dissertations and Theses

The purpose of this study was to explore relationships between several variables which help to explain the process by which adolescents decide to pursue a college education. Previous models were enhanced by including important theoretical constructs well documented in social cognitive and attributional theories as elements of human agency. The psychological constructs, self-efficacy and locus of control were the primary focus of attention as independent variables and for their significance as mediating variables affecting the relationship between previously identified factors attributed to students' postsecondary attendance decisions, and students' college aspirations and expectations. Particular attention was given to the college choice …

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Classification Of Text Documents Using A Logical Analysis Approach., Salvador Nieto Sanchez Jan 1999

Classification Of Text Documents Using A Logical Analysis Approach., Salvador Nieto Sanchez

LSU Historical Dissertations and Theses

The main problem investigated in this dissertation is as follows: Given are two samples of documents each from one of two disjoint collections of documents. The question is how to obtain a set of patterns of text features that make a document in the two samples (and other unclassified documents) to be classified correctly in one and only one document class. A sample of 2,897 documents from the TIPSTER collection was used to investigate this problem. This problem was divided into the following four subproblems. The first subproblem consists of identifying the set keywords to describe the documents' content. Computational …

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Holocene Environmental Change In Mainland Southeast Asia: Pollen And Charcoal Records From Cambodia., Andrew Lee Maxwell Jan 1999

Holocene Environmental Change In Mainland Southeast Asia: Pollen And Charcoal Records From Cambodia., Andrew Lee Maxwell

LSU Historical Dissertations and Theses

Major Holocene environmental changes in continental Southeast Asia are reconstructed using proxy data derived from analysis of 14C-dated changes in pollen, microscopic charcoal, and organic/inorganic carbon in sediment cores taken from permanent, closed-basin, volcanic lakes in Ratanakiri Province, northeastern Cambodia. Analysis focuses on the history of monsoon climate and land use, inferred from changes in vegetation, fire regime, and lake conditions. These data provide the first well dated palynological record, covering most of the Holocene and continuous up to the present, from an upland site in mainland Southeast Asia. The record from a 15-meter core retrieved from Yeak Kara Lake, …

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Cryopreservation Of Gametes And Larvae Of The Eastern Oyster Crassostrea Virginica., Carmen G. Paniagua-Chavez Jan 1999

Cryopreservation Of Gametes And Larvae Of The Eastern Oyster Crassostrea Virginica., Carmen G. Paniagua-Chavez

LSU Historical Dissertations and Theses

Storage of gametes and larvae offers benefits for research and commercial oyster production and should be applicable in the hatchery at a commercial scale. We optimized refrigerated storage of eastern oyster sperm. Significant differences were found in the motility of sperm suspended in artificial sea water (ASW) of different osmotic pressures (P < 0.001). The highest motility was found in undiluted sperm and the lowest in 1:31 dilution. The greatest larval survival at 12 h (48%) was obtained with sperm diluted in calcium-free Hanks' balanced salt solution (C-F HBSS). Thus, for storage of longer than 1 d, it is best to leave samples undiluted. However, when sperm samples are diluted, it is best to maintain high sperm concentrations and to use C-F HBSS as an extender. Samples were frozen at -2.5°C/min, held for 5 min at -30°C, and plunged in liquid nitrogen using 10% propylene glycol (PG) as the cryoprotectant for sperm and 10% or 15% PG for trochophore larvae. Motility and fertilizing ability of thawed sperm were affected by cryoprotectant concentration and thawing temperature (P = 0.0001). Larval survival was affected by the concentration of larvae per straw (P = 0.0011). Frozen samples were transported to an oyster hatchery at Grand Isle, Louisiana. After 4 months, 1,000 oysters from the control group, 230 oysters produced from thawed sperm, and 850 oysters from thawed larvae were found. Oysters produced from thawed larvae developed normally in the hatchery, demonstrating opportunities for use of cryopreservation in research and aquaculture. Flow cytometry with the fluorescent dyes Sybr-14 and propidium iodide (PI) was used to assess membrane damage of thawed sperm, and rhodamine 123 and PI were used to assess mitochondrial function. Preliminary studies of cryopreservation of oyster eggs were performed. Fluorescein diacetate (FDA) was used to identify viable eggs. Dimethyl sulfoxide (0.88 M and 1.75 M) and sucrose (0.12 M and 0.25 M) were the least toxic cryoprotectants evaluated. The cooling rate yielding least damage to eggs was -1.5°C per min. However, only an average of 14 eggs (out of 200) were stained with FDA in thawed samples and none were fertilizable.

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Out Of Sight, Out Of Mind: A Gis Study Of Changes In Cemetery Locations In Southeastern Louisiana From An Archaeological And Geographical Perspective, 1930--1997., Cindy Ann Nance Jan 1999

Out Of Sight, Out Of Mind: A Gis Study Of Changes In Cemetery Locations In Southeastern Louisiana From An Archaeological And Geographical Perspective, 1930--1997., Cindy Ann Nance

LSU Historical Dissertations and Theses

Cemeteries in southeastern Louisiana are in varying stages of use---from presently in use and maintained to no longer visible on the surface. The abandonment of traditional cemeteries in southeastern Louisiana illustrates evolving settlement patterns. Earlier settlement patterns were dependent on physiographic and cultural landscape features. As settlement patterns evolve, the preferred locations of cemeteries change. As a recent participant in the nationwide preference for urban-associated Memorial Parks, is Louisiana in the process of abandoning traditional cemetery landscapes? Six factors that contribute to the abandonment of traditional cemeteries from 1930 to 1997 are presented in this study. Evolving communities, demographic shifts, …

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Curriculum And The Holocaust: Competing Sites Of Memory And *Representation., Marla Beth Morris Jan 1999

Curriculum And The Holocaust: Competing Sites Of Memory And *Representation., Marla Beth Morris

LSU Historical Dissertations and Theses

Curriculum theory is a call to understanding. My call as a curriculum theorist is to attempt to understand work around the Holocaust. This study examines the ways in which the Holocaust gets represented in texts written by historians as well as texts written by novelists. I argue that memory is the larger category under which history is subsumed; history is the systematization of memory. Although historians draw on archives and are constrained by their discipline, nevertheless they operate out of their own memories. Psychological transference, repression, denial, projection and reversal shape historians' memories and therefore determine, to a certain extent, …

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Addressing The Problems Of Beginning Teachers: An Evaluation Of Teacher Induction Programs., Daphene O. Singleton Jan 1999

Addressing The Problems Of Beginning Teachers: An Evaluation Of Teacher Induction Programs., Daphene O. Singleton

LSU Historical Dissertations and Theses

The purpose of this study was threefold: (1) to identify the characteristics of effective teacher induction programs, (2) to determine the relationship between teacher induction and retention in a northeastern Louisiana school district, and (3) determine if teacher induction practices in that district are useful to new/beginning teachers. A pilot study was conducted, and a validity panel of experts validated the content and face validity of the survey and interview instruments developed for the various participants. The participants included the superintendent Central Office staff persons, selected principals, and new/beginning teachers. There was some discrepancy between the responses of the teachers …

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Instantaneous Learning Neural Networks., Kun Won Tang Jan 1999

Instantaneous Learning Neural Networks., Kun Won Tang

LSU Historical Dissertations and Theses

Instantaneous learning is a desirable feature in neural networks. This type of learning enables the network to be trained very quickly, typically in just one or two passes of the training set as opposed to hundreds or even thousands of passes for networks trained by an iterative process, such as the error backpropagation (BP) algorithm. This dissertation first reviews several existing types of neural networks with instantaneous learning capability. It then proposes a new network called the Fuzzy Classification (FC) Neural Network that can be trained with two passes of the training samples. The first pass assigns the synaptic weights …

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The Performance Of Prekindergarten Children On Representational Tasks Across Levels Of Displacement., Emily Flake Smith Jan 1999

The Performance Of Prekindergarten Children On Representational Tasks Across Levels Of Displacement., Emily Flake Smith

LSU Historical Dissertations and Theses

This investigation was guided by Nelson's (1996) experiential theory and the Situational-Discourse-Semantic (SDS) model of Norris and Hoffman (1993, 1997, in press) which was used to establish predictions regarding the representational difficulty of each of the task conditions. Subjects were 32 four-year-old children enrolled in four prekindergarten programs located within a small city in southern Louisiana and represented both lower and middle SES populations. The tasks required subjects to represent knowledge of the bedtime routine, ranging from personal enactments with props through generation of stories and event scripts for hypothetical situations. Performances were analyzed for content in terms of event …

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The Effects Of Rumen Undegradable Choline In The Nutrition And Metabolism Of Dairy Cows., Fernando Vazquez Jan 1999

The Effects Of Rumen Undegradable Choline In The Nutrition And Metabolism Of Dairy Cows., Fernando Vazquez

LSU Historical Dissertations and Theses

This study was conducted to determine whether supplemental rumen protected choline could improve lactation performance and lipid metabolism in cows in negative energy balance. In experiment 1, 19 primiparous Holstein cows were randomly assigned to dietary treatments consisting of either a control ration or control plus 15 g/d of supplemental rumen-protected choline (60 g/d of Cap-Shure, Balchem Corp., Slate Hill, NY). Close-up and early lactation rations were formulated from a grass hay and corn silage forage base, respectively, with a corn-soy concentrate, whole cottonseed. and alfalfa hay included as appropriate to meet nutrient requirements. Cows were milked twice daily. Cows …

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Multimillion Atom Molecular Dynamics Simulations Of Adhesion And Nanoindentation Of Silicon Nitride., Phillip Judson Walsh Jan 1999

Multimillion Atom Molecular Dynamics Simulations Of Adhesion And Nanoindentation Of Silicon Nitride., Phillip Judson Walsh

LSU Historical Dissertations and Theses

Multi-million atom molecular dynamics (MD) simulations of nanoindentation of silicon nitride and amorphization and fracture of silicon diselenide nanowires are performed on massively parallel architectures. System sizes range from 75,803 atoms to over 10 million atoms. The process of amorphization and fracture in silicon diselenide nanowires is followed using configuration space images in smaller wires and local stress and temperature calculations in larger wires. A structural transformation in the nanowire cross sections is investigated. The nanowires are found to contract in one direction perpendicular to the applied strain while expanding in the other, so that initially circular nanowires are transformed …

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The Miskito Settlement Landscape Of Eastern Honduras, With Emphasis On The Moravian Contribution., Benjamin Farr Tillman Jan 1999

The Miskito Settlement Landscape Of Eastern Honduras, With Emphasis On The Moravian Contribution., Benjamin Farr Tillman

LSU Historical Dissertations and Theses

This dissertation documents the influence of Moravian missionary activities on the Miskito settlement landscape in eastern Honduras---particularly in the areas of settlement morphology, housing, agriculture, and cemeteries. Upon their arrival to the Mosquito Coast in 1849, the missionaries employed a three pronged approach consisting of proselyting, medical treatment, and education to convert the majority of the indigenous population. The missionaries' resulting influence was a significant component and major cultural force in the development of a distinctive Protestant region within Catholic Central America. Moravian contributions to the settlement landscape in sixty-four Miskito villages of eastern Honduras were documented through field observations …

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Effect Of Rice Cultural Practices On Rotational Crop Herbicide Carryover And Imazethapyr Efficacy., Wei Zhang Jan 1999

Effect Of Rice Cultural Practices On Rotational Crop Herbicide Carryover And Imazethapyr Efficacy., Wei Zhang

LSU Historical Dissertations and Theses

A two-year study was conducted to evaluate the possible interaction between rotational crop herbicides and herbicides used in water-seeded rice culture. Rice growth and yield reduction with rotational crop herbicides were not affected by the rice herbicides. However, the combination of molinate or thiobencarb with fluometuron, imazethapyr, metolachlor, or norflurazon at low residue levels further reduced rice heading compared with the corresponding rotational crop herbicide alone. Fluometuron and metolachlor residues at 1 to 2 half-lives have potential to injure rice and reduce rice yield in a water-seeded culture. Norflurazon injured rice and reduced rice yield at a residue level as …

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The Potential Of High Oryzanol Rice Bran Oil As An Antioxidant In Whole Milk Powder., Jackin Njagi Nanua Jan 1999

The Potential Of High Oryzanol Rice Bran Oil As An Antioxidant In Whole Milk Powder., Jackin Njagi Nanua

LSU Historical Dissertations and Theses

Lipid autoxidation of whole milk powder (WMP) during storage lowers its organoleptic quality and causes accumulation of oxidation products. This study evaluated the effectiveness of high-oryzanol (2.5%) rice bran oil (RBO) as an antioxidant in WMP. The powder was fortified with 0.1% and 0.2% RBO and its oxidation studied during accelerated storage at 45°C and 0.31 water activity for 40 days. Free radicals were determined by electron spin resonance spectroscopy. Oxidation was estimated by determining thiobarbituric acid reactive substances (TBARS) and cholesterol oxidation products using gas chromatography. The effect of RBO on flavor and consumer preference of freshly manufactured milk …

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Machine -Cell Location Problems For Multiproduct Flowlines., Junfang Yu Jan 1999

Machine -Cell Location Problems For Multiproduct Flowlines., Junfang Yu

LSU Historical Dissertations and Theses

Jobs (parts) and machines are usually grouped into part-families and machine-cells in a flexible, cellular manufacturing system to minimize the flows of all work-in-processes (WIP). As a result of this grouping, some parts may need processing on some machines that are not in their own cells. The parts requiring machines in other cells are called 'exceptional parts,' and the corresponding machines are called ' bottleneck machines.' Usually, there are two ways to deal with this inter-cell flow problem: using a material handling system to move the exceptional parts among the cells or duplicating the bottleneck machine(s) for the corresponding exceptional …

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Enhancing The Process Of Testing Object -Oriented Systems., Ihssan Salim Alkadi Jan 1999

Enhancing The Process Of Testing Object -Oriented Systems., Ihssan Salim Alkadi

LSU Historical Dissertations and Theses

Testing is a crucial step in the overall system development process. Using testing techniques that support features of the underlying software paradigm more effectively tests program than do testing techniques that support features of other paradigms. Systems developed with the object-oriented paradigm require techniques that support object-oriented features such as inheritance, data abstraction, encapsulation, and dynamic binding. Many techniques that are used to test systems developed with the structured paradigm are not sufficient for the testing of object-oriented systems. The goal of this research is to develop methods that will improve the process of testing object-oriented systems. Specifically, emphasis is …

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Quantitative Modeling And Information System Support For Just -In -Time Partnership., Faisal Badi Al-Khateeb Jan 1999

Quantitative Modeling And Information System Support For Just -In -Time Partnership., Faisal Badi Al-Khateeb

LSU Historical Dissertations and Theses

Just-in-Time (JIT) supply calls for frequent, small deliveries, which arrive on time, with the quantity and quality required. For JIT to be effective there should be a cooperative relationship between the buyer and the supplier. They should work together to enhance their competitive positions in the market place. This study extends the quantitative models published in the literature to provide more realistic models for JIT operations and evaluates the costs and benefits of JIT partnerships to help in the negotiation process between the partners. We provide a new model for the optimization of the joint total relevant cost of the …

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