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

Digital Commons Network™

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

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5821 - 5850 of 9777

Full-Text Articles in Entire DC Network

The Role Of Networks In Labor Markets, Nongnuch Soonthornchawakan Jan 2007

The Role Of Networks In Labor Markets, Nongnuch Soonthornchawakan

LSU Doctoral Dissertations

Networks of relationships play an important role in the social and economic operation of the labor market. Social connections have been shown to be crucial in influencing the transition and efficiency in the labor market because they can quickly spread information over large segments of society. In particular in “small world” networks everyone can connect to others through very few intermediaries and information can spread far and fast over such a small-world network. The first chapter of this dissertation starts with the formal elements of social network analysis and graph theory. It then provides an overview of the emerging literature …

Go to article

Analysis Of The Association Between Socio-Demographic Variables, Juvenile Offending, And Formal Vs. Informal Juvenile Justice System Handling In A Non-Urban Sample, Stephen W. Phillippi, Jr. Jan 2007

Analysis Of The Association Between Socio-Demographic Variables, Juvenile Offending, And Formal Vs. Informal Juvenile Justice System Handling In A Non-Urban Sample, Stephen W. Phillippi, Jr.

LSU Doctoral Dissertations

PURPOSE: This study compares and contrasts first-time juvenile offenders enrolled in a community-based intervention program whose cases were processed either informally or formally, and examines empirically- and conceptually-relevant contributors to re-offending. METHODS: This is a longitudinal, secondary analysis of 1072 male and female offenders. The study includes descriptive univariate analyses; chi-square bivariate analyses of each independent variable with the dependent variables (level of processing and recidivism at both one and three years); and binary logistic regression analyses to identify significant predictors of the dependent variables. Independent variables include age, gender, race, family structure, marital status of biological parents, family income, …

Go to article

Equine Obesity-Related Hyperleptinemia, Nan Killen Huff Jan 2007

Equine Obesity-Related Hyperleptinemia, Nan Killen Huff

LSU Doctoral Dissertations

Plasma leptin concentrations in obese adult horses have been shown to vary widely, and horses tend to fit into two groups: low leptin (<10 ng/mL) and hyperleptinemic (10 to 50 ng/mL). Observations over time revealed that the hyperleptinemic condition was consistent, possibly indicating a relatively permanent underlying cause. Based on these observations, three experimental approaches were used to further study equine obesity-related hyperleptinemia. The first experiment determined the prevalence of hyperleptinemia among postpartum, lactating mares, evaluated its consequence on their re-breeding success, and investigated correlations between leptin levels in lactating and non-lactating mares. Postpartum mares (n = 198) and non-foaling mares (n = 31) were categorized based on their leptin status: normoleptinemic or hyperleptinemic. Leptin in the lactating mares averaged 4.8 ng/mL, and 11 of the 198 (13%) displayed hyperleptinemia. Leptin in the non-lactating mares averaged 7.5 ng/mL, with 9 mares (29%) displaying hyperleptinemia. Of the 198 lactating mares bred, 81% became pregnant; there was no effect of leptin status on re-breeding success. To study one possible cause for hyperleptinemia in well-fed horses, a second experiment explored polymorphism(s) within exon 2 of the equine leptin gene. The DNA from five hyperleptinemic and five normal mares of high body condition was used to analyze exon 2 of the leptin gene for polymorphisms. Based on the 10 mares tested, there was no polymorphism in exon 2 of the equine leptin gene; therefore, polymorphism is not a likely explanation for the high vs. low leptin difference. The third experiment explored the possible effects of hyperleptinemia on the endocrine and immune systems. Endotoxin was given to mares and geldings to investigate the role and/or regulation of leptin in the pro-inflammatory cytokine response. Of the endpoints measured, only platelet count differed between normal and hyperleptinemic horses. Endotoxin infusion caused the expected pro-inflammatory cytokine and endocrine responses, but leptin status was not a significant factor for any endpoint. It is concluded that hyperleptinemia in mares is not associated with polymorphism in exon 2 of the leptin gene, does not affect re-breeding rates of foaling mares, and does not alter the endotoxin-induced responses of the endocrine and immune systems.

Go to article

Sensory Characteristics And Optimization Of A Low-Sodium Salt Formulation And Its Food Application, Armen Khachatryan Jan 2007

Sensory Characteristics And Optimization Of A Low-Sodium Salt Formulation And Its Food Application, Armen Khachatryan

LSU Doctoral Dissertations

Excessive consumption of sodium is associated with high blood pressure in people. Reduction of sodium intake and replacement of salt with salt substitutes are an essential component of the primary prevention of hypertension. Potassium chloride is the most widely used salt substitute. However, when used in large amounts, it imparts bitterness and metallic aftertaste. Therefore, bitterness masking agents need to be used in salt substitute formulations. L-Arginine has been reported to have bitterness masking properties. No research has yet been conducted to investigate the effects of KCl and L-Arginine on the perception of saltiness and bitterness in the mixture of …

Go to article

Genetics Of Herpes Simplex Virus Type-1 Tegument Proteins Involved In Virion Morphogenesis And Egress, Preston A. Fulmer Jan 2007

Genetics Of Herpes Simplex Virus Type-1 Tegument Proteins Involved In Virion Morphogenesis And Egress, Preston A. Fulmer

LSU Doctoral Dissertations

Herpes simplex virus type-1 (HSV-1) morphogenesis occurs in multiple stages within infected cells. Initially, the virion capsid assembles within the nucleus and buds through the nuclear membrane into the cytoplasm. Within the cytoplasm, additional tegument proteins attach to the capsid and the fully tegumented capsids bud into trans-Golgi network (TGN) derived vesicles. Enveloped virions are ultimately secreted to extracellular spaces. The process by which the cytoplasmic capsids bud into TGN-derived vesicles is not well understood. The prevalent model calls for specific interactions among viral tegument proteins and membrane proteins and glycoproteins embedded within TGN membranes. To further investigate the roles …

Go to article

The Formation Of A Style: Selected Early Works By Hugo Wolf, Jure Rozman Jan 2007

The Formation Of A Style: Selected Early Works By Hugo Wolf, Jure Rozman

LSU Doctoral Dissertations

Hugo Wolf’s (1860–1903) most pronounced talent was in marrying music and poetry in novel ways, which is clearly demonstrated by his more than 240 art songs. In his early years Wolf composed a series of works for piano solo, published for the first time in 1974 by the Musikwissenschaftlicher Verlag in Vienna. This paper explores these and other formative works in detail, focusing on music-theoretical issues, but also placing them in historical context by means of a brief biography which includes recent discoveries regarding Wolf’s Slovene lineage.

Go to article

Probing The Association Behavior Of Hydrophobic Organic Compounds With Dissolved Humic Materials, Hadi M. Marwani Jan 2007

Probing The Association Behavior Of Hydrophobic Organic Compounds With Dissolved Humic Materials, Hadi M. Marwani

LSU Doctoral Dissertations

The association mechanism between hydrophobic organic compounds (HOC) and dissolved humic materials (DHM) has continued to be one of the interesting areas in environmental applications. The goal of the research reported in this dissertation is to investigate the association behavior of HOC with DHM. The first part of this research involves steady-state fluorescence measurements of these multi-component systems to study the effect of DHM content on the association mechanism of HOC, in particular using pyrene as a model. Results showed that steady-state fluorescence alone may not provide enough information about the quenching mechanism of pyrene with DHM. Lifetime based fluorescence …

Go to article

The Experiences Of Refugee Youth From The Conflicts In The Sudan: A Collective Case Study, Michele Kelly Jan 2007

The Experiences Of Refugee Youth From The Conflicts In The Sudan: A Collective Case Study, Michele Kelly

LSU Doctoral Dissertations

The purpose of this qualitative study was to explore the role of familial protective factors in moderating the relationship between risk and resilience in Sudanese refugee youth exposed to political violence. Interviews, direct observations, and physical artifacts were the sources of data. Eight “Lost Boys” participated in the study, providing narratives of their experiences of the Sudanese civil wars. They also answered questions posed about the role of familial protective factors in moderating the relationship between risk and resilience. The interviews were recorded on audiotape and then transcribed. Data consisted of the transcripts and field notes of processes and observations. …

Go to article

Images In Fashion Advertisements: Their Role In Involvement And The Consumer Communications Process, Monica Santaella Jan 2007

Images In Fashion Advertisements: Their Role In Involvement And The Consumer Communications Process, Monica Santaella

LSU Doctoral Dissertations

The importance of images as a means of persuasion in advertisements, with few exceptions, has been viewed as secondary to copy (text) in advertisements. Even though images play an important part in the communication of messages for fashion apparel, research to develop an understanding of how images influence consumers is needed. Hypotheses were developed to test the proposition that viewers’ level of advertisement and fashion involvement would be moderated by type of advertisement treatment for a fashion product considered controversial: (1) copy and image, (2) copy only, and (3) image only.
Involvement, as a state that can be measured along …

Go to article

A Comparison Of Channel Morphology, Marsh Elevation, And Biological Processes In Natural And Dredged Tidal Salt Marshes In Louisiana, Jennifer S. Spicer Jan 2007

A Comparison Of Channel Morphology, Marsh Elevation, And Biological Processes In Natural And Dredged Tidal Salt Marshes In Louisiana, Jennifer S. Spicer

LSU Doctoral Dissertations

Channel networks in tidal marshes serve as conduits for the exchange of water between the estuary and the marsh surface and form the spatial structure that regulates the flow of organisms, materials, and energy throughout the marsh system. Canal dredging creates channels with distinct linear shapes, and the artificial levee created from the dredged material creates ‘spoil banks’ along either side of the channel edge. Differences in morphology and adjacent marsh surface elevation between natural and dredged channel systems have not been well quantified, but may have important implications for the functioning of tidal channels as habitat for marsh-dependent species. …

Go to article

Effect Of Adapted Phonic Faces Story Books On Phonological Skills Of Children With Severe Expressive Language Disorders, Meher Hormazd Banajee Jan 2007

Effect Of Adapted Phonic Faces Story Books On Phonological Skills Of Children With Severe Expressive Language Disorders, Meher Hormazd Banajee

LSU Doctoral Dissertations

Although No Child Left Behind (2001) encourages the inclusion of all children within the regular curriculum, children with severe speech and physical disabilities rarely are provided with the literacy education provided to grade-level peers. This study taught alphabetic skills to three children with severe speech and physical impairments in the context of traditional alphabet books versus Phonic Faces Storybooks. Both storybooks were converted into e-books using Microsoft Office PowerPoint (Microsoft Office, 2003) and accessed using a single rocking lever switch. Two graphemes were selected based on incorrect responses from the pretest administration of the The Phonological Awareness Test (Roberson & …

Go to article

Toward A New Understanding Of Wisdom: The Role Of Communication On Perceptions Of Wisdom, Jon M. Croghan Jan 2007

Toward A New Understanding Of Wisdom: The Role Of Communication On Perceptions Of Wisdom, Jon M. Croghan

LSU Doctoral Dissertations

Wisdom is a multi-faceted, multi-dimensional, multidisciplinary construct which has been discussed and examined since the beginning of recorded history. Many classical and contemporary scholars have sought to define wisdom, but a precise definition has proven elusive. Since wisdom often defies easy categorization, this dissertation examines wisdom using a multi-methodological perspective. Four chapters of this dissertation discuss the historiography of various societal attributions of wisdom using performance studies techniques. Three chapters examine wisdom and the instruments constructed to measure the construct from a social scientific approach. This study seeks to clarify, while simultaneously deconstructing, the definition of wisdom. The four performative …

Go to article

The Symbolism Of Tennessee Williams' The Glass Menagerie: An Inductive Approach, D. Brent Barnard Jan 2007

The Symbolism Of Tennessee Williams' The Glass Menagerie: An Inductive Approach, D. Brent Barnard

LSU Doctoral Dissertations

Tennessee Williams expressed himself in the language of symbols. They were not ornaments to his work, but were to his mind the only satisfactory means of expressing himself as an artist, and predate almost every other consideration in the process of composition. Characterization, dialogue, plot and setting were all selected based on their potential to represent symbolically his identity and experience, and more specifically, the conflict between spirit and flesh which he felt had come to define him. However, before transforming his life into symbols, he attempted to abstract the world of his experience into something pure, something elemental and …

Go to article

P-Glycoprotein And Membrane Permeability As Determinants Of Xenobiotic Bioavailability And Bioaccumulation, Xiaobing Tan Jan 2007

P-Glycoprotein And Membrane Permeability As Determinants Of Xenobiotic Bioavailability And Bioaccumulation, Xiaobing Tan

LSU Doctoral Dissertations

The ABC transporter P-glycoprotein (Pgp) and membrane permeability are determinant factors for absorption and disposition of xenobiotics. These studies investigated the effects of potential modulators of Pgp and/or membrane function on the disposition, bioavailability and bioaccumulation of environmentally relevant pharmaceuticals, tetracycline and ivermectin, and the carcinogen benzo[a]pyrene in catfish. The pesticide dieldrin and surfactant linear alkylbenzene sulfonate (LAS) were selected as mixture components thought to have potential interactions with these determinants of disposition. Initial in situ experiments demonstrated dieldrin and tetracycline both significantly inhibited biliary excretion of Pgp prototypic substrate Rhodamine-123 in isolated perfused livers. Further, dieldrin (20µM) reduced movement …

Go to article

Metabolism And Gene Expression During Diapause In Athropods, Julie Annette Reynolds Jan 2007

Metabolism And Gene Expression During Diapause In Athropods, Julie Annette Reynolds

LSU Doctoral Dissertations

Arthropods may enter diapause to escape environmental insult. Diapause is an endogenously controlled dormant state defined by developmental arrest and species-specific physiological changes (e.g., metabolic depression and upregulation of compounds that protect cell structure and function). Although physiological changes have been documented for a number of species in diapause, biochemical and molecular regulation of diapause remains largely unexplained. Aerobic metabolism in diapause, Artemia franciscana, embryos is reduced up to 92 % compared with post-diapause embryos. Differences in isolated mitochondria are insufficient to account for respiratory depression because mitochondria in diapause embryos are structurally similar to mitochondria in post-diapause embryos. Respiratory …

Go to article

Investigation On The Antioxidant Capabilities Of Spice Extracts In Inhibition Of Long Chain Polyunsaturated Fatty Acids Oxidation And Cholesterol, Sandeep D. Bhale Jan 2007

Investigation On The Antioxidant Capabilities Of Spice Extracts In Inhibition Of Long Chain Polyunsaturated Fatty Acids Oxidation And Cholesterol, Sandeep D. Bhale

LSU Doctoral Dissertations

Antioxidant capabilities of the spice extract of ginger, oregano, rosemary and turmeric were evaluated by monitoring inhibition of DHA and EPA in a menhaden fish oil model and cholesterol oxidation model system. The spice extracts were mixed with the fish oil at 1, 2.5 and 5 % (w/w) and 1, 2.5 and 5mg (dw) were used in cholesterol study. The temperatures 150oC and 175oC were used for the oxidation study and a 60oC was used for incubation storage. The methanol extracts of all four spices demonstrated significant capability in retaining the DHA and EPA, after subjected to oxidation when compared …

Go to article

Wood Liquefaction In The Presence Of Phenol With A Weak Acid Catalyst And Its Potential For Novolac Type Wood Adhesives, Hui Pan Jan 2007

Wood Liquefaction In The Presence Of Phenol With A Weak Acid Catalyst And Its Potential For Novolac Type Wood Adhesives, Hui Pan

LSU Doctoral Dissertations

Wood liquefaction was conducted using phenol as a reagent solvent with oxalic acid as a catalyst. A series of studies were done on liquefied wood, liquefied wood residues, novolac-type liquefied wood resins, and bio-composites fabricated from liquefied wood resin. The results of the liquefied wood residue characterization revealed that the liquefaction reactions conducted in different reaction vessels underwent different liquefaction mechanisms. The crystallinity indexes of the liquefied wood residues were higher than that of the original wood, indicating that the amorphous lignin was the most susceptible component in wood to the liquefaction reaction. Fe2+ and Fe3+ ions were found to …

Go to article

Balch Internet Research And Analysis Tool Development Case Study, Charles V. Balch Jan 2007

Balch Internet Research And Analysis Tool Development Case Study, Charles V. Balch

LSU Doctoral Dissertations

The Internet has become increasing popular as a vehicle to deliver surveys. An essential objective of research is to collect accurate data and there has been little work to insure that Internet survey systems are employing best practices as defined by academic and professional research to collect data. My dissertation reviews the current literature relating to best practices in Internet survey design and best practices in software design and development. I then document the development and deployment of an Open Source and publicly licensed Internet survey system that allows researchers to easily create, deploy, and analyze the results of Internet …

Go to article

Using Time-Lapse And Stroboscopic Photography To Enhance Student Understanding Of Plant Growth, Structure, And Pollination: An Inquiry-Based Study, Louis John Schultz Jan 2007

Using Time-Lapse And Stroboscopic Photography To Enhance Student Understanding Of Plant Growth, Structure, And Pollination: An Inquiry-Based Study, Louis John Schultz

LSU Doctoral Dissertations

This study was designed to evaluate the effects of allowing students to generate their own images in a science class as opposed to using pre-existing images. The participants in the study were 7th grade science students enrolled in a small, rural, Louisiana school. A mixed methods design was used so that call available data was collected and analyzed. The lessons used in the study were based on plant structure, growth, and propagation which fit into the mandated 7th grade science curriculum. The students were involved in the taking of still, time-lapse, and stroboscopic images throughout the study. Although an analysis …

Go to article

Spatial And Temporal Structure Of Typhoid Fever In Washington, D.C., 1895-1909: A Geographic Information Systems Exploration Of Urban Health Concerns, Sarah Elizabeth Hinman Jan 2007

Spatial And Temporal Structure Of Typhoid Fever In Washington, D.C., 1895-1909: A Geographic Information Systems Exploration Of Urban Health Concerns, Sarah Elizabeth Hinman

LSU Doctoral Dissertations

The period between 1880 and 1920 was one of the most dynamic in the history of medicine. Morbidity and mortality rates for infectious diseases dropped quickly. Concurrently, miasmatic theory gave way to germ theory. Many of these dynamic changes occurred in the urban centers of North America, which were also entering into a period of dramatic growth and change. Following the 1905 completion of infrastructure improvements intended to improve public health in Washington, D.C., typhoid fever rates unexpectedly increased. Previously, for mitigation purposes, Dr. George Kober investigated a typhoid epidemic in 1895, and as a result of the 1906 increase …

Go to article

An Applied Evaluation Of Resurgence: Functional Communication Training (Fct) And Treatment Relapse, Valerie Marie Volkert Jan 2007

An Applied Evaluation Of Resurgence: Functional Communication Training (Fct) And Treatment Relapse, Valerie Marie Volkert

LSU Doctoral Dissertations

Extinction is a very important component of functional communication training (FCT). Thus, the potential undesirable effects of extinction must be considered before this type of treatment is implemented. Resurgence, the recurrence of previously reinforced behavior when another behavior is placed on extinction, is a possible undesirable effect of extinction. Resurgence may account for some instances of treatment relapse in situations where problem behavior recovers following implementation of extinction-based treatments such as FCT. Despite the potential relevance of resurgence to understanding why problem behavior may re-emerge, few applied studies have examined resurgence effects. The current study attempted to determine whether resurgence …

Go to article

Engineering A Photo-Control Mechanism For Rna Interference, Richard Andrew Blidner Jan 2007

Engineering A Photo-Control Mechanism For Rna Interference, Richard Andrew Blidner

LSU Doctoral Dissertations

RNA interference (RNAi) is a phenomenon in which RNA molecules elicit potent and sequence-specific post-transcriptional gene silencing. Nucleic acid chemical modifications have been incorporated to improve their pharmacological properties. Despite numerous developments in chemical modifications for increased stability, safety, and efficiency of these therapeutic agents, they still face challenges of spatial and temporal targeting. One potential targeting strategy uses photocaging techniques, which involves the covalent attachment of photolabile compounds to the effector NA species that blocks bioactivity until exposed to near UV-light. This work demonstrates that fully-2’-fluorinated nucleic acids (FNAs) can elicit RNAi and that these effectors are resistant to …

Go to article

The Effect Of Food Deprivation On Cigarette Smoking In Females, Darla E. Kendzor Jan 2007

The Effect Of Food Deprivation On Cigarette Smoking In Females, Darla E. Kendzor

LSU Doctoral Dissertations

Studies have shown that food deprivation is associated with increases in the self-administration of nicotine and other substances in laboratory animals. However, little is known about the effects of food deprivation on substance use in humans. The purpose of the present study was to compare smoking rates, expired carbon monoxide levels, and smoking topography in 15 female participants during a state of acute food deprivation and in a non-deprived state. A within-subjects design was utilized to test the primary hypotheses that smoking rate and expired carbon monoxide levels would be greater among the participants in the food-deprived condition than in …

Go to article

Narratives In Music: Schelmo, Hebraic Rhapsody For Cello And Orchestra, Asu Perihan Karadut Jan 2007

Narratives In Music: Schelmo, Hebraic Rhapsody For Cello And Orchestra, Asu Perihan Karadut

LSU Doctoral Dissertations

Born in July 1880, in Geneva, Switzerland, Ernest Bloch became one of the leading composers of the 20th century. He wrote series of works, which he called “The Jewish Cycle.” They represented a new, distinctive musical language, in which Bloch combined eastern and western music traits. Schelomo, Hebraic Rhapsody for Cello and Orchestra (1915-16) was the last composition from the cycle. It showed mastery of a style Bloch had been developing since his earlier compositions. This project will show Schelomo’s place in “The Jewish Cycle” and its importance on Bloch’s departure from the popular trends of the early 20th century. …

Go to article

Drivers Of Liking And Effects Of Corn Hybrics On Quality Of Corn Tortilla, Jose Andres Herrera Corredor Jan 2007

Drivers Of Liking And Effects Of Corn Hybrics On Quality Of Corn Tortilla, Jose Andres Herrera Corredor

LSU Doctoral Dissertations

Corn tortilla, an ancient staple food of Mexico and Central America, is still the base food in those countries and has also become more popular in other countries with high Hispanic population. However, mechanization of corn tortilla production has modified the original sensory attributes to new standards that meet manufacturer’s requirements. The first part of this study attempted to determine the sensory attributes that drive consumer’s decision on the acceptability and purchase intent of the corn tortilla available in the Mexican market. The findings may help manufacturers to improve the processing of tortilla and develop products with ethnic authenticity. Overall …

Go to article

Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu Jan 2007

Detection Of The Bloodmeal Origin Of Mosquitoes Collected At Alligator Farms, And West Nile Virus Activity In Mosquitoes Collected From Alligator Farms, Sentinel Chicken Surveillance Sites, And Larval Habitats, Isik Unlu

LSU Doctoral Dissertations

A three year study was conducted to determine if testing mosquitoes collected in modified sentinel chicken boxes for West Nile Virus (WNV) or testing sentinel chickens for WNV antibody would detect WNV activity prior to reports of human cases in East Baton Rouge (EBR) Parish, Louisiana. In one year we also compared the effectiveness of CDC light traps, gravid traps, and sentinel chicken box traps for collecting WNV positive mosquitoes. In all three years, we detected WNV activity in mosquito collections from sentinel chicken box traps prior to the onset of human cases, while there were no seroconversions in the …

Go to article

Identification Of Molecular Markers And Association Mapping Of Selected Loci Associated With Agronomic Traits In Rice, Suresh Babu Kadaru Jan 2007

Identification Of Molecular Markers And Association Mapping Of Selected Loci Associated With Agronomic Traits In Rice, Suresh Babu Kadaru

LSU Doctoral Dissertations

Discriminate Analysis as a procedure was evaluated to select molecular markers associated with complex traits in US rice germplasm. Markers for percent head rice, percent total rice, and grain yield were identified with high levels of correct classification that mapped within or near traditional Quantitative Trait Loci (QTL). Mixed model-regression procedure to identify molecular markers that predict phenotypic variance associated with four agronomic traits was created and validated in two distinct rice inbred populations. Main and epistatic effects were identified by standard hypothesis testing and Bayesian information criteria in a multivariate format. The new procedure increased power and enhanced prediction …

Go to article

The Relationship Of Selected Personal Characteristics Of E-Faculty To Their Perceived Technological Knowledge, Myriah Christin Clark Jan 2007

The Relationship Of Selected Personal Characteristics Of E-Faculty To Their Perceived Technological Knowledge, Myriah Christin Clark

LSU Doctoral Dissertations

This study investigated the technological development of e-faculty at five randomly selected Carnegie classified (2006) Doctorate-Granting Research Universities with very high research activity (RU/VH) in the Southern Regional Education Board (SREB). The majority of e-faculty report that they do not have release time/reduced teaching load for preparing web-based materials/courses, nor do they have graduate or teaching assistants available for assisting with web-based learning. However, a little over half of them reported having instructional designers or curriculum developers to help with the designing of web-based materials and a large majority reported having adequate institutional research resources (library holdings that are accessible …

Go to article

Isolation And Characterization Of Two Closely Related Beta-Carbonic Anhydrases Of Chlamydomonas Reinhardtii, Ruby Agno Ynalvez Jan 2007

Isolation And Characterization Of Two Closely Related Beta-Carbonic Anhydrases Of Chlamydomonas Reinhardtii, Ruby Agno Ynalvez

LSU Doctoral Dissertations

Aquatic photosynthetic organisms such as the green alga, C. reinhardtii respond to low carbon dioxide conditions by inducing a carbon dioxide concentrating mechanism (CCM). Important components of the CCM are carbonic anhydrases (CAs), zinc metalloenzymes that catalyze the interconversion of carbon dioxide and bicarbonate. C. reinhardtii now has nine carbonic anhydrases, three alpha-CAs and six beta-CAs. This dissertation describes the identification and characterization of two closely related beta-CAs, CAH7 and CAH8. These CAs are 63% identical. CAH7 and CAH8 encode proteins of 399 and 333 amino acids, respectively. Both of these CAs are constitutively expressed at the transcript and protein …

Go to article

The Effects Of 3-Dimensional Cadd Modeling Software On The Development Of The Spatial Ability Of Ninth Grade Technology Discovery Students, K. Lynn Basham Jan 2007

The Effects Of 3-Dimensional Cadd Modeling Software On The Development Of The Spatial Ability Of Ninth Grade Technology Discovery Students, K. Lynn Basham

LSU Doctoral Dissertations

The purpose of this quantitative study was to determine if there is a difference in the development of spatial abilities of ninth grade Technology Discovery students in Mississippi as measured by the Purdue Visualization of Rotations Test. Students experienced one of three differing instructional methods utilizing Pro/Desktop® 3-D CADD solid modeling software. Participants were students in Mississippi schools operating on a 4 x 4 block schedule during either fall or spring semesters during the 2005-2006 school year, and a control group of students whose schools did not offer CADD. Instructional material designed by the researcher was used for two instructional …

Go to article

First Prev Next Last