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Articles 1 - 20 of 20
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Grammatical Morphology In A Child With Autism, Katherine Ball
Grammatical Morphology In A Child With Autism, Katherine Ball
Honors Theses
No abstract provided.
An Analysis Of Spelling Patterns Produced By Elementary School-Aged Speakers Of African American English, Lindsay Meyer Turner
An Analysis Of Spelling Patterns Produced By Elementary School-Aged Speakers Of African American English, Lindsay Meyer Turner
LSU Doctoral Dissertations
Over the years, less attention is given to students’ spelling skills compared to other areas of literacy achievement like word reading and passage comprehension in relationship to nonmainstream dialect usage. Considering that English spelling is based on the phonological and morphological structures of Mainstream American English (MAE), it is likely that children who speak a nonmainstream dialect such as African American English (AAE) will demonstrate differences in their spelling abilities. The purposes of this study were to explore the relationship between degree of AAE dialect use and spelling for a group of first to third grade children, and to describe …
Use Of Copula And Auxiliary Be By African American Children With Gullah/Geechee Heritage, Jessica Richardson Berry
Use Of Copula And Auxiliary Be By African American Children With Gullah/Geechee Heritage, Jessica Richardson Berry
LSU Doctoral Dissertations
The purpose of this study was to document the auxiliary and copula BE system of African American (AA) children with Gullah/Geechee (GG) heritage and to compare the findings to those from African American English (AAE)-speaking children without this heritage and to what has been documented in previous studies of Gullah and AAE. The data came from 38 children, aged five to six years. Nineteen were from rural South Carolina and classified as GG, and 19 were from rural Louisiana and classified as AAE. All were developing language typically, and the groups were matched on a number of socio-demographic variables and …
Comparative Genomic Studies Of Catfish And Zebrafish Strains Of Edwardsiella Ictaluri, Rui Wang
Comparative Genomic Studies Of Catfish And Zebrafish Strains Of Edwardsiella Ictaluri, Rui Wang
LSU Doctoral Dissertations
Edwardsiella ictaluri is a gram negative bacterium that is the causative agent of enteric septicemia of catfish. In 2011, this bacterium was identified as the causative agent of massive death in zebrafish populations in U.S. In this project, we found that isolates of E. ictaluri from zebrafish comprise a unique strain that differs from the type strain of E. ictaluri phenotypically as well as genetically. Also, strains of E. ictaluri from zebrafish are non-infectious in channel catfish Ictalurus punctatus by immersion. Here we sequenced the zebrafish strains of E. ictaluri LADL11-100 and LADL11-194 and compared the potential virulence genes in …
Va-Et-Vient, The Goin' And Comin' Of Infinitival 'To': A Study Of Children With And Without Specific Language Impairment In Cajun English, Andrew Mandell Riviere
Va-Et-Vient, The Goin' And Comin' Of Infinitival 'To': A Study Of Children With And Without Specific Language Impairment In Cajun English, Andrew Mandell Riviere
LSU Doctoral Dissertations
The purpose of this study was to examine Cajun English (CE)-speaking children’s marking of infinitival TO. To do this, CE-speaking children’s marking of infinitival TO was compared to the marking of infinitival TO by Southern White English (SWE)- and African American English (AAE)-speaking children. Marking of infinitival TO also was examined as a function of the children’s clinical status (i.e., Specific Language Impairment, SLI, or typically developing, TD) and by the verb contexts that preceded the infinitival TO forms.
The data came from 180 kindergarteners who lived in four rural towns in Assumption Parish, Louisiana. The children’s dialect classifications were …
Mechanisms Controlling Stem Cell Differentiation, Tran Doan Ngoc Tran
Mechanisms Controlling Stem Cell Differentiation, Tran Doan Ngoc Tran
LSU Doctoral Dissertations
Mesenchymal stem cells are multipotent cells that can differentiate into many cell types. However, the molecular mechanism controlling this process remains unclear. We utilized rat dental follicle stem cells (rDFSCs) and human adipose derived stem cells (hASCs) to study the mechanisms controlling osteogenesis and adipogenesis. Elevations in the intracellular Ca2+ concentration are a phenomenon commonly observed during stem cell differentiation but cease after the process is complete. The Transient Receptor Potential Melastatin 4 (TRPM4) is an ion channel that controls Ca2+ signals in excitable and non-excitable cells. However, there are no studies on TRPM4 in stem cells. In another study, …
Effects Of Encoding Practice On Alphabet, Phonemic Awareness, And Spelling Skills Of Students With Developmental Delays, Laura Nicole Delrose
Effects Of Encoding Practice On Alphabet, Phonemic Awareness, And Spelling Skills Of Students With Developmental Delays, Laura Nicole Delrose
LSU Doctoral Dissertations
Reading instruction has historically been deemphasized for students in special education, and the limited research on this topic reveals that sight word vocabulary is most commonly taught in special education classrooms (Browder, Wakeman, Spooner, Ahlgrim-Delzell, Algozzine, 2006). However, successful reading instruction must target the five essential components: vocabulary, fluency, comprehension, phonics, and phonemic awareness (National Reading Panel, 2000). The extremely small body of research attempting to teach phonics and phonemic awareness to students with mild to severe disabilities approaches instruction from a decoding framework with mixed success (Browder et al., 2006). Alternatively, this study aims to teach from an encoding …
Treatment Efficacy Of Manual Therapy On Speech Outcomes In Children With Spastic Cerebral Palsy: A Single-Subject Experimental Design, Chantelle B. Varnado
Treatment Efficacy Of Manual Therapy On Speech Outcomes In Children With Spastic Cerebral Palsy: A Single-Subject Experimental Design, Chantelle B. Varnado
LSU Doctoral Dissertations
ABSTRACT Objective – The present study aimed to determine if a treatment effect is present on speech outcomes in children with spastic cerebral palsy (CP) given 5 sessions of a manual therapy treatment protocol. Methods – A single-subject experimental design (ABAB) study was devised to establish the treatment efficacy of a manual therapy protocol on speech outcomes in children with spastic CP. The protocol was administered to 5 participants, 4-6 years old. It included five intercostal stretches administered in 15-minute sessions for five sessions. During the withdrawal phase, a sham treatment was administered that included an equal dosage of treatment. …
The Use Of Geographic Information Systems And Ecological Niche Modeling To Map Transmission Risk For Visceral Leishmaniasis In Bahia, Brazil, Moara De Santana Martins
The Use Of Geographic Information Systems And Ecological Niche Modeling To Map Transmission Risk For Visceral Leishmaniasis In Bahia, Brazil, Moara De Santana Martins
LSU Doctoral Dissertations
Leishmaniasis is a public health problem in Brazil, and despite the control programs in place, Bahia remains one of the states with the highest incidence rates of cutaneous leishmaniasis (CL) and visceral leishmaniasis (VL). This study proposed to develop and evaluate the applicability of ecological niche models (ENM) for leishmaniasis, to determine the influence of environmental and socioeconomic factors on the incidence of these diseases at three geographic scales: national, statewide and community. Water availability, garbage collection, precipitation and temperature were the most important variables in predicting areas suitable for VL and CL in the country. The extensive geography of …
Correlation Of Ultrasonographic Small Intestinal Wall Layering With Histology In Normal Dogs, Alexandre Benjamin Le Roux
Correlation Of Ultrasonographic Small Intestinal Wall Layering With Histology In Normal Dogs, Alexandre Benjamin Le Roux
LSU Master's Theses
Five intestinal layers are commonly described ultrasonographically in dogs. However, current high-frequency endosonography allows the identification of 9 layers in people. The aim of this study was to describe ex vivo small intestinal layering in dogs and correlate ultrasonographic layering with histological layers. Our hypothesis was that, similar to findings in humans, discrepancies exist in thickness and visibility of intestinal layers between histology and ultrasound in dogs. Twelve adult dogs were included in the study. They were euthanized for reasons unrelated to gastrointestinal disease, but extensive medical history was unavailable. Duodenum, jejunum and ileum samples were resected immediately after euthanasia. …
Toll-Like Receptor 4 (Tlr4) In Acute And Chronic Renal Diseases, Anand R. Nair
Toll-Like Receptor 4 (Tlr4) In Acute And Chronic Renal Diseases, Anand R. Nair
LSU Doctoral Dissertations
Despite advances in its treatment, the incidence of renal diseases has been consistently increasing. Hence, there is a need to understand the underlying molecular mechanisms of the progression of kidney diseases. Recent research implicates inflammation as an important mediator of renal injury. We hypothesized that inhibiting Toll-like receptor 4 (TLR4), an upstream modulator of several inflammatory pathways, would prevent the progression of renal diseases. First, we determined the mechanism by which AngiotensinII (AngII)-induced inflammation is modulated by TLR4 using an in vitro model of rat tubulo-epithelial cells. We blocked TLR4 using gene silencing strategy in NRK52E cells. In TLR4-silenced cells, …
The Role Of Herpes Simplex Virus Type 1 Glycoprotein K In Neuroinvasion And Immunopathogenesis Of Herpes Keratitis, Ahmad Saied
The Role Of Herpes Simplex Virus Type 1 Glycoprotein K In Neuroinvasion And Immunopathogenesis Of Herpes Keratitis, Ahmad Saied
LSU Doctoral Dissertations
ABSTRACT Herpes simplex virus type 1 is a common neurotropic pathogen responsible for a multitude of human diseases ranging from mucocutaneous lesions, keratitis to life-threatening encephalitis. The hallmark of the HSV-1 life cycle is infection of sensory neurons, where the virus establishes a latent infection for the life of the host. Viral envelope glycoproteins play important roles in viral life cycle and virus-host interaction. Viral glycoproteins gK, gM, gE and the membrane protein UL11 have been shown to be important for virus assembly, egress and virus spread. To investigate the relative importance of each of gK, gM, gE and UL11 …
Development And Characterization Of A Live-Attenuated Vaccine To Combat Equine Herpesvirus Type-1 Infections, Shiliang Anthony Liu
Development And Characterization Of A Live-Attenuated Vaccine To Combat Equine Herpesvirus Type-1 Infections, Shiliang Anthony Liu
LSU Doctoral Dissertations
Equine Herpesvirus 1 (EHV-1) is an important ubiquitous enzootic equine pathogen and one of the most common pathogens of the horse, causing, respiratory disease, epidemic abortion, occasionally neurological disease in horses, which leads to significant economic losses to the horse industry. EHV-1 induces several clinical signs of disease ranging in severity, from mild respiratory disease to abortion in pregnant mares, neonatal foal death and neuropathogenic disorders. Natural EHV-1 infection stimulated short lived protective immunity and had both humoral and cellular immune responses. Currently vaccination remains the best option to prevent EHV-1 infection and different applications of vaccination have been investigated …
Reliability Of Subjective Endoscopic Parameters In The Differentiation Of Essential Voice Tremor And Adductor Spasmodic Dysphonia Using High-Speed Videoendoscopy, Lindsey A. Parker
Reliability Of Subjective Endoscopic Parameters In The Differentiation Of Essential Voice Tremor And Adductor Spasmodic Dysphonia Using High-Speed Videoendoscopy, Lindsey A. Parker
LSU Master's Theses
Certain neurogenic voice disorders present with similar or overlapping audio perceptual voice characteristics. Developing reliable and standardized perceptual measures of vocal fold vibratory characteristics for such voice disorders can enable accurate diagnosis and lead to faster, targeted treatment. In this study, subjective perceptual vocal fold vibratory characteristics and the presence and absence of supraglottic events during phonation were investigated to differentiate between Adductor Spasmodic Dysphonia (ADSD) and Essential Vocal Fold Tremor (EVT) using high-speed videoendoscopy (HSV). The specific aims of the study were to 1) assess which subjective endoscopic vocal fold vibratory measures differentiate EVT from AdSD; and 2) assess …
Evaluation Of Teacher Ratings To Improve Child Language Screenings In Speech-Language Pathology, Kyomi Dana Gregory
Evaluation Of Teacher Ratings To Improve Child Language Screenings In Speech-Language Pathology, Kyomi Dana Gregory
LSU Doctoral Dissertations
The purpose of this study was to examine the validity of teacher ratings for screening children’s language skills. Teacher ratings were measured through the use of two tools, the Children’s Communication Checklist-2 (CCC-2; Bishop, 2006) and the Teacher Rating of Oral Language and Literacy (TROLL; Dickinson, McCabe, & Sprague, 2001). The data for this study were from 77 kindergarteners who lived in rural Louisiana and spoke a non-mainstream dialect of English; 51 were classified as typically developing and 26 as presenting with Specific Language Impairment. Convergent validity was examined by comparing the two teacher rating tools to each other and …
Caregiver Perceptions Of Speech-Language Pathologist (Slp) Communication: Examining How Slps Talk With Caregivers About Child Language Disorders, Karmen L. Porter
Caregiver Perceptions Of Speech-Language Pathologist (Slp) Communication: Examining How Slps Talk With Caregivers About Child Language Disorders, Karmen L. Porter
LSU Doctoral Dissertations
The purpose of this study was to identify how SLP communication regarding language disorders was perceived by caregivers. Employing a qualitative methodology, the caregivers of 10 children, identified with a language-based reading impairment, participated in semi-structured interviews concerning their experiences communicating with SLPs. As a whole, the findings showed the value caregivers place on receiving clear, concrete, and timely diagnostic information, the variability and complexity associated with caregivers’ understanding of language disorders, and the reciprocal relationship between key SLP communication practices, caregiver knowledge, and effective collaboration. Some of the key themes emphasized in regard to SLP communication practices included: recognition …
Investigating The Effect Of Photographic Representations On Scores Of The Stroke And Aphasia Quality Of Life Scale-39 For People With Moderate To Severe Aphasia, Samantha Studrawa
Investigating The Effect Of Photographic Representations On Scores Of The Stroke And Aphasia Quality Of Life Scale-39 For People With Moderate To Severe Aphasia, Samantha Studrawa
LSU Master's Theses
Background: The Stroke and Aphasia Quality of Life-39 (SAQOL-39) is a valid and reliable measure of quality of life (QOL) for stroke survivors and people with mild-to-moderate aphasia However, it could not be validated for people with severe aphasia due to their language deficits. Research has shown that combining pictures with written text can support communication effectiveness of people with aphasia. Combining language modalities in this way is a form of alternative or augmentative communication (AAC). The use of AAC has been explored as a possibility to improve communication for people with severe aphasia (Dietz, McKelvey & Beukelman, 2006). Aim: …
Acoustic Realization Of Contrastive Stress In Individuals With Parkinson's Disease, Ana Maria Gaviria
Acoustic Realization Of Contrastive Stress In Individuals With Parkinson's Disease, Ana Maria Gaviria
LSU Master's Theses
This study investigated the acoustic correlates of contrastive stress produced by individuals with Parkinson’s disease (PD) to learn more about their ability to modulate acoustic cues to mark contrastive stress. Speech materials from 10 individuals with PD and 10 gender- and age-matched neurologically healthy controls (HC) were recorded and analyzed. The four acoustic measures (peak intensity, peak F0, vowel duration, and acoustic vowel space area) of stressed and unstressed syllables were compared to determine which acoustic parameters are preferentially employed by each group to mark contrastive stress. The results indicated that individuals with PD exhibited significant changes in vowel duration …
Do People With Aphasia Interpret Road Signs Differently Than People Without Aphasia?, Caitlin Elise Brown
Do People With Aphasia Interpret Road Signs Differently Than People Without Aphasia?, Caitlin Elise Brown
LSU Master's Theses
Purpose: This study increased our understanding of how aphasia may affect interpretation of road signs. Background: Despite aphasia’s theoretical effects on road sign comprehension and promising initial findings in studies that investigated driving and aphasia, the literature examining aphasia and road signs has been sparse. Research has shown that aphasia may have some effect on road sign interpretation. However, more study is needed regarding both accuracy and response time to road sign interpretation, which are equally important for safe driving. Methods: This was a prospective, between group study that used data collected from a larger study by Donovan, Savage, Varnado, …
The Effects Of Prostatic Fluid On Functional Characteristics Of Cooled Canine Semen, Reto Fritsche
The Effects Of Prostatic Fluid On Functional Characteristics Of Cooled Canine Semen, Reto Fritsche
LSU Master's Theses
The objectives of this study were to investigate concentration dependent effects of canine prostatic fluid (PF) on in vitro seminal parameters of cooled canine semen. Sperm motility parameters, plasma membrane integrity and stability, acrosome integrity and DNA fragmentation were measured after the addition of 0%, 10%, 25%, or 50% PF to extended semen of fertile dogs. Assessments were made at 0 h pre-cooling, at 24, and 48 h of cooled storage (4 °C), and after freezing and thawing followed by incubation (37 °C) at 0, 4 and 24 h. Our hypothesis was that lower dilutions of canine semen with PF …