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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
181

Phonological representations, phonological awareness, and print decoding ability in children with moderate to severe speech impairment

Sutherland, Dean Edward January 2006 (has links)
The development of reading competency is one of the most significant pedagogical achievements during the first few years of schooling. Although most children learn to read successfully when exposed to reading instruction, up to 18% of children experience significant reading difficulty (Shaywitz, 1998). As a group, young children with speech impairment are at risk of reading impairment, with approximately 50% of these children demonstrating poor acquisition of early reading skills (Nathan, Stackhouse, Goulandris, & Snowling, 2004; Larivee & Catts, 1999). A number of variables contribute to reading outcomes for children with speech impairment including co-occurring language impairment, the nature and severity of their speech impairment as well as social and cultural influences. An area of research that has received increasing attention is understanding how access to the underlying sound structure or phonological representations of spoken words stored in long-term memory account for reading difficulties observed in children (Elbro, 1996; Fowler, 1991). Researchers have hypothesised that children with speech impairment may be at increased risk of reading disability due to deficits at the level of phonological representations (Bird, Bishop, & Freeman, 1995). Phonological representation deficits can manifest in poor performance on tasks that require children to think about the sound structure of words. Knowledge about the phonological components of words is commonly referred to as phonological awareness. Identifying and manipulating phonemes within words are examples of phonological awareness skills. Some children with speech impairment perform poorly on phonological awareness measures compared to children without speech difficulties (Bird et al., 1995; Carroll & Snowling, 2004; Rvachew, Ohberg, Grawburg, & Heyding, 2003). As performance on phonological awareness tasks is a strong predictor of early reading ability (Hogan, Catts, & Little, 2005), there is an important need to determine if children with speech impairment who demonstrate poor phonological awareness, have deficits at the level of phonological representations. This thesis reports a series of studies that investigated the relationship between phonological representations, phonological awareness, and word decoding ability in children with moderate to severe speech impairment. A child with complex communication needs (CCN) who used Augmentative and Alternative Communication (AAC) was also examined to determine how the absence of effective articulation skills influences the development of phonological representations. The study employed a longitudinal design to compare the performance of nine children (aged 3:09-5:03 at initial assessment) with moderate to severe speech impairment and 17 children with typical speech development on novel assessment measures designed to determine characteristics of children's phonological representations. The tasks required children to judge the accuracy of spoken multisyllable words and newly learned nonwords. The relationships between performance on these tasks and measures of speech, phonological awareness and early print decoding were also examined. Four assessment trials were implemented at six-monthly intervals over an 18-month period. The first assessment trial was administered approximately 6 to12 months before children commenced school. The fourth trial was administered after children had completed 6 to 12 months of formal education. The child with CCN completed three assessment trials over a period of 16 months. Data analyses revealed that the children with speech impairment had significantly greater difficulty (p<0.01) judging mispronounced multisyllable words compared to their peers with typical speech development. As a group, children with speech impairment also demonstrated inferior performance on the judgment of mispronounced forms of newly learned nonwords (p<0.05). No group differences were observed on the judgment of correctly pronounced real and nonword stimuli. Significant group differences on speech production and phoneme segmentation tasks were identified at each assessment trial. Moderate to high correlations (i.e., r = 0.40 to 0.70) were also observed between performance on the phonological representation tasks and performance on phonological awareness and speech production measures at each trial across the study. Although no significant group differences were observed on the nonword decoding task, 4 of the 9 children with speech impairment could not decode any letters in nonwords (compared to only 1 child without speech impairment) at the final assessment trial when children were 6-years-old. Two children with speech impairment showed superior nonword decoding ability at trial 3 and 4. The within-group variability observed on the nonword decoding task highlighted the heterogeneity of children with speech impairment. The performances of four children with speech impairment with differing types of speech error patterns were analysed to investigate the role of phonological representations in their speech and phonological awareness development. The child with delayed speech development and excellent phonological awareness at trial 1, demonstrated superior phonological awareness and word decoding skills at age 6 years, although his performance on phonological representation tasks was inconsistent across trials. In contrast, a child with delayed development and poor early phonological awareness demonstrated weak performance on phonological representation, phonological awareness, and decoding at each successive assessment trial. The child with a high percentage of inconsistent speech error patterns generally demonstrated poor performance on phonological representation, phonological awareness and decoding measures at each of the 4 assessment trials. The child with consistent and unusual speech error patterns showed increasingly stronger performance on the phonological representation tasks and average performance on phonological awareness but limited word decoding ability at age 6. The 11-year-old girl with CCN, whose speech attempts were limited and unintelligible, demonstrated below average performance on phonological representation tasks, suggesting that an absence of articulatory feedback may negatively influence the development of well-specified phonological representations. This thesis provides evidence for the use of receptive tasks to identify differences in the phonological representations of children with and without speech impairment. The findings also provide support for the link between the representation of phonological information in long-term memory and children's speech production accuracy, phonological awareness and print decoding ability. The variable performance of some children with speech impairment and the child with cerebral palsy demonstrate the need to consider individual characteristics to develop an understanding of how children store and access speech sound information to assist their acquisition of early reading skills.
182

Theory of Mind and Pretend Play in Children with Specific Language Impairment

Stich, Melanie 23 February 2011 (has links)
The ability to represent the mental states of others (i.e., Theory of Mind, ToM) is vital for social interaction. There is limited information on ToM knowledge in children with specific language impairment (SLI). These children have deficient language abilities that cannot be explained by hearing, cognitive, or neurological problems. Furthermore, children with SLI experience difficulty in initiating and maintaining social pretend play. Language, pretend play, and ToM typically develop in concert, which may indicate that they share an underlying capacity for representation. Given that language is deficient in children with SLI, these children may have problems with ToM, which might be related to their social behaviors during pretend play. This study was the first to investigate the association between ToM and pretend play in children with and without SLI. Twenty-two children with SLI and 22 with typical development (TD), between 48-71 months of age, participated in this study. Children engaged in a variety of ToM tasks and participated in two pretend play assessments: a standardized pretend play assessment and a role play activity. Children with SLI scored significantly lower on ToM tasks and engaged less often in some sophisticated forms of pretend play than their age-matched peers with TD. After controlling for language and SES, there were no significant associations between ToM and pretend play in children with and without SLI. When language groups were analyzed individually, different patterns of associations emerged for children with and without SLI. ToM was positively associated with pretend play in children with TD but negatively associated in children with SLI. Moreover, inconsistent patterns of associations were observed for some children with SLI (i.e., poor ToM understanding but sophisticated pretend play or vice versa). This study demonstrated that children with SLI may also have concomitant problems in ToM and pretend play, which may have implications for clinical assessment and intervention. The study contributes to the literature by investigating the link between ToM and different forms of sophisticated pretend play in children with and without SLI. Given the different patterns of partial correlations, future investigation of the relationship between ToM and pretend play relationship is warranted.
183

Cognitive Differences Between Congenitally and Adventitiously Blind Individuals.

Hupp, Gregory S. 08 1900 (has links)
It is apparent from the historical perspective regarding the theories of cognitive development and the cognitive functioning of individuals with visual impairments, that sight plays a major role in the development of certain cognitive processes. However, the affects of visual impairment on cognitive development remain to be at issue. Since sight seems to be highly integral in cognitive development beginning in the early stages of physical development, about the sixth month of life, and then begins to diminish in importance as verbal communication develops around eighteen months, then it should stand to reason that significant visual impairment or blindness occurring prior to this time would adversely impact an individual's cognitive development. Conversely, the occurrence of visual impairment or blindness after this critical period of development would have less of an impact. Cognitive theorists have proposed that visually impaired or blind persons may have developed different cognitive pathways to acquire, process, and accommodate sensory information. As a result, visually impaired or blind (VI/B) persons may "think differently" than sighted individuals. The present study was designed to address these issues as they relate to cognitive and neuropsychological development at various stages of growth and to examine possible differences in neuropsychological functioning dependent on the level of visual functioning a person retains; e.g. both the issues of age at onset and degree of impairment. It was also designed to study the possible interaction effects of degree of impairment with the age of onset. Findings indicated that the only differences in cognitive functioning appear to be related to age of onset and not the level of visual impairment. The findings further suggested that congenitally blind individuals have indeed developed alternate methods of cognitively processing nonverbal, abstract, or complex information, especially information involving a high degree of spatial orientation. Implications of this study may influence the educational methods used to teach congenitally blind individuals in order to reinforce these alternate pathways and facilitate more effective means of negotiating in a sighted environment.
184

Iris - Mensajería instantánea para personas con ceguera en dispositivos móviles con pantalla táctil

Castellano Alvarez, Franco, Chavarría Podoliako, Paul J., Barrientos Padilla, Alfredo 03 July 2015 (has links)
En años recientes, el uso de tabletas y teléfonos o dispositivos inteligentes ha incrementado continuamente gracias a la facilidad y disponibilidad de acceso a la información, entretenimiento y comunicación que ofrecen con su creciente variedad de aplicativos y especialmente su acceso a internet. A diferencia de computadoras o notebooks, estos dispositivos tienen tecnologías para mejorar la usabilidad para personas con dificultades visuales que también pueden ser utilizadas para crear nuevos aplicativos de asistencia sin la necesidad de aparatos externos. Esto genera oportunidades para un desarrollo inclusivo que mantiene la misma portabilidad. Sin embargo, estos dispositivos principalmente usan una pantalla táctil y aún entre sus tecnologías incorporadas, no tienen medios para ingresar datos que sean permitan que personas con ceguera ingresen información por otros medios que no sean su voz o un complejo teclado QWERTY. En este artículo, proponemos el uso de una solución adaptativa que permite al usuario usar la misma pantalla táctil como una alternativa para ingresar datos al simular un teclado Braille y demostramos su uso, además de tecnologías de lector de texto, con una aplicación que permite que una persona ciega chatee mediante mensajes instantáneos.
185

Region of Interest Aware and Impairment Based Image Quality Assessment

Chandu, Chiranjeevi January 2016 (has links)
No description available.
186

Postoje posluchačů vůči mluvčím s vybranými řečovými vadami / Listener's attitudes towards speakers with speech impairments

Brušáková, Lenka January 2014 (has links)
The thesis is an overview of current approaches to the issue of listeners attitudes towards speakers based on the characteristics of their speech, with regard to the methodology and to the types of monitored attributes of speech. The existing research results and methodological approaches are evaluated with specific attention given to speech defects in Czech language. A review of survey data was conducted that addressed the attitudes of Czech listeners towards Czech speakers with speech defects, specifically with sigmatism. For this purpose, records of 8 speakers with sigmatism selected from the Prague Phonetic Corpus were used. These records were modified in a manner that corresponds to the methods of Matched guise technique. Afterwards a perception test and a questionnaire were compiled in order to investigate the real attitudes of the Czech listeners toward selected Czech speakers, respectively their speech impairments. The test was presented to homogeneous group of 42 respondents. The results suggest a significant link between sigmatism and the negative attitudes of listeners towards speakers, especially the perception of their social status. The overall result of this thesis is the description of the target area (see the title of the paper) the has led to the formulation of hypotheses for...
187

Zásada opatrnosti v účetních výkazech / The principle of prudence in the financial statements

Žohová, Alena January 2010 (has links)
In the Czech accounting standards is defined only a general obligation of entities to account for the reduced value of the property and there is no contained detailed instructions for calculating impairment. In contrast, international accounting standards contain detailed requirements for impairment tests. It specifies when and how tests assets, how to account for impairment losses and indicate the conditions for reversal of these losses.
188

Health status and functioning after traumatic spinal cord injury in South Africa: Comparison between a private and a public health care funded cohort

Jeftha, Tarryn Kim January 2018 (has links)
Magister Scientiae (Physiotherapy) - MSc(Physio) / Introduction: A spinal cord injury is the damage to the spinal cord that alters functional independence. Two different systems of care for the management of health conditions are available in private and public care in South Africa. A better understanding of health and functioning of individuals in the two systems is crucial to help address inequality between the two systems. The aim of the study was to describe the health status and functioning of persons with traumatic spinal cord injury (TSCI) in the Western Cape province who received public-funded care compared with those in the Gauteng province who received private care. Methodology: The study entailed a cross-section comparison between a government-funded cohort in the Western Cape and a private cohort in Gauteng, two of the provinces of South Africa. Self-administered questionnaires and standardised outcome measures were used to collect the data and to ensure validity and reliability. Data were captured on Excel and then transferred to SPSS (Statistical Package for Social Sciences) for analysis. Ethical clearance to conduct the study was obtained from the Biomedical Research Ethics Committee of the University of the Western Cape.
189

Analysis of depressive symptoms and cognitive impairment in residents using the interRAI-LTCF in a long-term care facility in the Cape Metropole in South Africa

Mayer, Linda January 2018 (has links)
Magister Curationis - MCur / Worldwide concerns have been raised about the presence and association of depressive symptoms, cognitive impairment, and dementia in older adults (60 years and older), which are often unrecognised and untreated in long-term care facilities (LTCF’s). The progression of cognitive impairment to dementia reduces quality of life with negative consequences of physical, mental, and psychosocial health. In many LTCF’s internationally, the standardised interRAI system is used to capture depressive symptoms and cognitive impairment. However, there is a fragmentation of systems for making evidence-based decisions to plan and manage care for residents with depressive symptoms, cognitive impairment, and dementia. This study, being the first of its kind in South Africa, addressed this gap, by describing a profile of depressive symptoms and cognitive impairment in residents, and analysing their coexistence, using the interRAI-LTCF in a LTCF in the Cape Metropole in South Africa. A quantitative, descriptive, and analytical cross-sectional secondary data analysis was conducted using the records of all 173 resident’s medical records of residents with a last interRAI-LTCF assessment from 2014 and 2016. The objectives were to determine the levels of depressive symptoms and cognitive impairment, and to assess variously associated demographics and clinical variables between depressive symptoms and cognitive impairment of the interRAI-LTCF in residents in a LTCF. Secondary data were analysed, using the IBM Statistical Package for Social Sciences (SPSS) software, version 25, to test any statistically significant relationship between the extracted variables (Significance was set as p˂0.05).
190

Characterisation of Cape Town brown haze

Walton, Nicola Maria 16 November 2006 (has links)
Faculty of Science School of Geography And Archaeology and Enviromental Studies 9905693x Nicola@crg.bpb.wits.ac.za / The Cape Town brown haze is a brown-coloured smog that is present over the Cape Town atmosphere during the winter months due to the accumulation of gaseous and particulate pollutants. The main aim of this research was to evaluate the impact of atmospheric pollutants to visibility impairment by the brown haze through visibility modelling of major pollution sources around the City of Cape Town. The screening model, VISCREEN, the Plume Visibility model, PLUVUE II and the CALPUFF Modelling System were employed to model the visual impact of emissions from the major sources. Two point sources, Caltex Oil Refinery and Consol Glass, and three area sources, Cape Town Central Business District (CBD), Cape Town International Airport and the townships of Khayelitsha and Mitchell’s Plain were identified as the major sources. An initial screening analysis indicated that emissions from the two industrial sources would be visible and would result in a yellow-brown discolouration of the atmosphere. Detailed modelling using PLUVUE II identified the area sources of Cape Town CBD and the townships to be the significant contributors to visibility impairment over Cape Town. Plume perceptibility is primarily dependant upon particulate emissions while NOx emissions influence the colouration of the atmosphere. CALPUFF was employed to assess the distribution of NOx, SO2 and PM10 concentrations over the area and the associated visibility impairment on a nonhaze (13 August 2003) and haze day (22 August 2003). Pollutant concentrations were considerably reduced on the non-haze day compared to the haze day. The Cape Town CBD was an important source of all the major pollutants with the townships contributing significantly to the aerosol loading over Cape Town. Pollutant concentrations are particularly elevated during the late evening and early morning periods, particularly between 7 am and 8 am. Visibility impairment is greatest on the haze day, particularly over the central Cape Town region and the townships. The greatest reduction in visibility is experienced between midnight and 9 am which corresponds with the periods of elevated atmospheric pollutant concentrations.

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