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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.
1

The stress patterns and residual stresses developed in curved die upsetting

Shih, Yi-Pu January 1993 (has links)
No description available.
2

Enfrentando as dificuldades da compreensão oral do inglês falado: uma pesquisa na sala de aula.

Inkpin, Sally January 2004 (has links)
Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-05-16T12:19:42Z No. of bitstreams: 1 Sally Inkpin.pdf: 7186183 bytes, checksum: 764a229cdc151491bf8e22f9b2f1f25d (MD5) / Approved for entry into archive by Alda Lima da Silva(sivalda@ufba.br) on 2013-05-27T21:36:17Z (GMT) No. of bitstreams: 1 Sally Inkpin.pdf: 7186183 bytes, checksum: 764a229cdc151491bf8e22f9b2f1f25d (MD5) / Made available in DSpace on 2013-05-27T21:36:17Z (GMT). No. of bitstreams: 1 Sally Inkpin.pdf: 7186183 bytes, checksum: 764a229cdc151491bf8e22f9b2f1f25d (MD5) Previous issue date: 2004 / Neste estudo, procurou-se investigar, se o treino da pronúncia e o aumento da conscientização sobre os padrões da prosódia, da ênfase e da não-ênfase da língua inglesa de um grupo de aprendizes adultos brasileiros implica em um melhor desempenho de compreensão do inglês falado em cadeia. O estudo ilustra os erros típicos de pronúncia do aprendiz brasileiro e as dificuldades que ele sente quando escuta o inglês falado. Chega-se à conclusão de que muitos desses problemas originam-se nas diferenças entre os padrões de ênfase da língua materna dos aprendizes e os da língua estrangeira. A língua inglesa é uma língua stress-timed, significando que somente as sílabas tônicas e as sílabas fortes dos agrupamentos de pensamentos são enunciadas claramente, enquanto o português brasileiro pertence ao grupo syllable-timed de línguas, significando que a duração e o timbre das suas sílabas são muito mais regulares. Dois grupos de alunos (um grupo de controle e um grupo de pesquisa) participaram de um curso de inglês e seus resultados num teste de compreensão oral foram comparados no início e no fim dos cursos. Ao grupo de controle, foi ministrado um curso típico da abordagem comunicativa, enquanto o grupo da pesquisa seguiu o mesmo curso, com o acréscimo de informações sobre a ênfase e a não-ênfase da língua inglesa e os processos da simplificação que resultam destas como a redução, a assimilação, a contração, a elisão e a junção. O grupo da pesquisa praticou a pronúncia do inglês para reforçar a sua consciência sobre a ênfase e a não-ênfase, trabalhando sob a premissa de que a pronúncia e a compreensão oral são habilidades interligadas. Este estudo não pode ser considerado conclusivo por causa das limitações da amostra, entretanto foi observado que o grupo de pesquisa demonstrou resultados positivos especialmente na área do reconhecimento das palavras-chave. / Salvador
3

Spanish-Specific Patterns and Nonword Repetition Performance in English Language Learners

Brea-Spahn, María R 01 January 2009 (has links)
Nonword repetition tasks were originally devised to assess the efficiency of the phonological loop (Baddeley & Hitch, 1974), a component of the working memory system, where verbal information is temporarily stored and translated to support activities like phonological processing during early word-recognition (Snowling, 1981; Wagner et al., 2003), speech production (McCarthy & Warrington, 1984), and articulation (Watkins, Dronkers, & Vargha-Khadem, 2002; Yoss & Darley, 1974). From a practical perspective, there is a significant need for a systematically-designed Spanish nonword repetition measure that is equivalent to currently-available English measures. For this study, a database of nonwords that considered phonotactic and phonological properties of Spanish was devised. In a preliminary study, Spanish-speaking adults provided wordlikeness judgments about a large set of candidate nonwords. A subset of the rated nonwords was used in the development of a Spanish nonword repetition measure. The aim of the main experiment was to explore the contributions of participant factors (age, gender, and vocabulary knowledge) and item factors (word length, stress pattern, and wordlikeness) to Spanish repetition performance in this group of Spanish speaking, English language learning children. From a theoretical perspective, this investigation allowed a first observation of how experience with listening to and producing Spanish words influences the acquisition of Spanish-specific phonological patterns. A total of 68 children, ages four to six years with varying degrees of Spanish language knowledge participated in this study. Results revealed significant age and word length effects. However, stress pattern did not exert significant effects on repetition performance, which is not completely consistent with previous literature. That is, participants repeated nonwords from both the more frequent and the less frequent stress pattern with similar accuracy. Wordlikeness, a previously uninvestigated variable in nonword repetition was found to affect repetition accuracy. For all participants, nonwords rated as high in wordlikeness were more accurately repeated than were nonwords with low wordlikeness ratings. Findings of the study are discussed in terms of how they relate to working memory and usage-based models of phonological learning. Finally, the clinical relevance of nonword repetition in the assessment of coarse- and fine-grained mappings of phonological knowledge is suggested.
4

Word Stress Patterns in the English of Spanish Speakers: A Perceptual Analysis

Ruiz García, María Isabel 28 September 2018 (has links)
Esta tesis analiza la producción de palabras inglesas utilizadas en contexto por parte de estudiantes españoles del inglés. Un total de 76 grabaciones de dos textos diferentes se han analizado, transcribiendo en AFI las 125 palabras elegidas para el análisis de los patrones de acentuación. El propósito principal de este trabajo es analizar, describir y clasificar los esquemas de pronunciación más característicos del inglés de los estudiantes españoles, con referencia específica a las alteraciones relacionadas con los diferentes esquemas de acentuación y de reducción vocálica. Para ello, se ahonda en el estudio de los patrones de acentuación utilizados según el número de sílabas, según la acentuación original de las palabras y según la clase léxica. También se examinan las tendencias de uso de reducción vocálica en las sílabas átonas y el uso de la acentuación secundaria.
5

Stress shift in English rhythm rule environments : effects of prosodic boundary strength and stress clash types

Azzabou-Kacem, Soundess January 2018 (has links)
It is well-known that the early assignment of prominence in sequences like THIRteen MEN vs. thirTEEN, (defined as the Rhythm Rule, or post-lexical stress shift), is an optional phenomenon. This dissertation examines some of the factors that encourage the application of stress shift in English and how it is phonetically realised. The aim is to answer two sets of questions related to why and how stress shift occurs in English: 1a) Does prosodic boundary strength influence stress shift? 1b) Does the adjacency of prominences above the level of the segmental string encourage stress shift? 2) How is stress shift realized? a) Is stress shift only a perceptual phenomenon? and b) Which syllables, if any, change acoustically when stress shift is perceived? To answer these questions, four experiments were designed. The first three experiments test whether the strength of the prosodic boundaries before and after the target word (e.g., canteen) influence stress shift. The effect of the strength of the left-edge prosodic boundary was investigated by comparing perceived stress patterns of the target (e.g., canteen) as produced in isolation where it is preceded by an utterance- and a phrase- initial prosodic boundary (the Isolated condition) with its rendition when embedded in a frame sentence (e.g., Say canteen again) where the left prosodic boundary before canteen is weaker (the Embedded condition). Results show a very clear tendency towards late phrasal prominence on the final accentable syllable (e.g., -teen in canteen) in the Embedded condition while in the Isolated condition this pattern appeared in less than half of the targets, showing that the stronger left boundary increased the incidence of stress shift. Two more experiments manipulated the strength of the boundary to the right of the target (#) respectively by changing the syntactic parse of the critical phrase (e.g. canteen cook) in sequences like (1) and by manipulating constituent length as in (2). Results showed that the syntactic manipulation significantly affected the strength of the prosodic boundary between the clashing words which was stronger in (1b) relative to (1a), and affected the incidence of stress shift, which was higher in (1a) relative to (1b). The length manipulation also affected the rate of stress shift, which was significantly higher in the phrase with the shorter word, e.g., soups (2a) relative to phrase with the longer word, e.g., supervisors (2b). (1) Example from the Syntax Experiment a. Who is the canteen (#) cook these days? (Pre-modifier + Noun) b. How do the canteen (#) cook these days? (NP + VP) (2) Example from the Length Experiment a. It should include the canteen (#) soups again. (Shorter constituent) b. It should include the canteen (#) supervisors again. (Longer constituent) Whilst we knew from the literature that the grouping of the clashing words within one Intonational Phrase (IP) encourages stress shift, results from the Syntax and Length experiments indicate that this (i.e., the phrasing of the clashing words within same IP) is not sufficient condition for the occurrence of stress shift, and that fine-grained degrees of boundary strength below the Intonational Phrase can drive changes in prominence pattern. The fact that higher rates of stress shift (and associated significant acoustic changes) were driven by manipulations of constituent length --for sequences with the same syntactic structure-- provides support for the idea that prosodic (rather than syntactic) boundaries directly influence stress shift. The fourth experiment tests the definition of stress clash in English in cases like fourteen candles where the two main lexical prominences are strictly adjacent along the time dimension, in fourteen canoes where the prominences are not adjacent in time, but adjacent at the higher levels of the metrical hierarchy, and in fourteen canteens where the main lexical prominences are not adjacent, and do not clash. This experiment highlighted and resolved an unacknowledged disagreement about what clash status sequences with one weak intervening syllable (e.g., fourTEEN caNOES). The fourTEEN caNOES type were shown to behave like metrically clashing sequences (e.g., fourteen CANdles) in attracting stress shift, and differently from the non-metrically-clashing sequences (e.g., fourteen CANTEENS) in discouraging it. These results provide empirical support for the Standard Metrical Theory (e.g. Selkirk, 1984; Nespor & Vogel, 1989) claim that 1) stress clash matters in triggering stress shift and that 2) stress clash in English is defined at the higher prosodic levels and not restricted to the level of the segmental string as indirectly assumed in a growing body of research (e.g., Vogel, Bunnel & Hoskins, 1995; Tomlinson, Liu & Fox Tree, 2014). Along with the establishment of prosodic boundary strength as one of the predictors influencing stress shift, another important contribution of the thesis is providing empirical evidence that the English Rhythm Rule is not solely a perceptual phenomenon and that it is associated with acoustic correlates. The main correlates of perceived stress shift consistently appearing across experiments is the decrease in the duration of the main lexical prominence of the target (e.g., -teen in canteen) and the increase of fundamental frequency and Sound Pressure Level peaks and on the initial syllable (e.g., canin canteen), when followed by a main clashing phrasal prominence. The acoustic analysis shows that the first accentable syllable also contributes in the perception of stress shift. This latter result does not lend support to the deletion formulation of the Rhythm Rule (Gussenhoven, 1991) which stipulates that the impressions of stress shift are solely associated with changes of prominence in the last accentable syllable of the target (e.g. -teen in canteen). Along with the determination of the acoustic correlates of perceived stress shift in English, the present research 1) indicates that fine-grained gradations of prosodic boundary strength can influence stress shift, 2) shows that while stress clash can increase the incidence of stress shift, stress shift can take place even in environments completely free of stress clash, and 3) provides evidence that stress clash should not be construed simply as the concatenation of two main lexical prominences along the time dimension.

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