<p>This thesis describes a system for dealing with free surface fluid simulations, and the components needed in order to construct such a system. It builds upon recent research, but in a computer graphics context the amount of available literature is limited and difficult to implement. Because of this, the text aims at providing a solid foundation of the mathematics needed, at explaining in greater detail the steps needed to solve the problem, and lastly at improving some aspects of the animation process as it has been described in earlier works. </p><p>The aim of the system itself is to provide visually plausible renditions of animated fluids in three dimensions in a manner that allows it to be usable in a visual effects production context. </p><p>The novel features described include a generalized interaction layer providing greater control to artists, a new way of dealing with moving objects that interact with the fluid and a method for adding source and drain capabilities.</p>

This thesis presents an automatic animation system for jellyfish that is based on a physical simulation of the organism and its surrounding fluid. Our goal is to explore the unusual style of locomotion, namely jet propulsion, which is utilized by jellyfish. The organism achieves this propulsion by contracting its body, expelling water, and propelling itself forward. The organism then expands again to refill itself with water for a subsequent stroke. We endeavor to model the thrust achieved by the jellyfish, and also the evolution of the organism's geometric configuration. <p> We restrict our discussion of locomotion to fully grown adult jellyfish, and we restrict our study of locomotion to the resonant gait, which is the organism's most active mode of locomotion, and is characterized by a regular contraction rate that is near one of the creature's resonant frequencies. We also consider only species that are axially symmetric, and thus are able to reduce the dimensionality of our model. We can approximate the full 3D geometry of a jellyfish by simulating a 2D slice of the organism. This model reduction yields plausible results at a lower computational cost. From the 2D simulation, we extrapolate to a full 3D model. To prevent our extrapolated model from being artificially smooth, we give the final shape more variation by adding noise to the 3D geometry. This noise is inspired by empirical data of real jellyfish, and also by work with continuous noise functions from the graphics community. <p> Our 2D simulations are done numerically with ideas from the field of computational fluid dynamics. Specifically, we simulate the elastic volume of the jellyfish with a spring-mass system, and we simulate the surrounding fluid using the semi-Lagrangian method. To couple the particle-based elastic representation with the grid-based fluid representation, we use the immersed boundary method. We find this combination of methods to be a very efficient means of simulating the 2D slice with a minimal compromise in physical accuracy.

This thesis presents an automatic animation system for jellyfish that is based on a physical simulation of the organism and its surrounding fluid. Our goal is to explore the unusual style of locomotion, namely jet propulsion, which is utilized by jellyfish. The organism achieves this propulsion by contracting its body, expelling water, and propelling itself forward. The organism then expands again to refill itself with water for a subsequent stroke. We endeavor to model the thrust achieved by the jellyfish, and also the evolution of the organism's geometric configuration. <p> We restrict our discussion of locomotion to fully grown adult jellyfish, and we restrict our study of locomotion to the resonant gait, which is the organism's most active mode of locomotion, and is characterized by a regular contraction rate that is near one of the creature's resonant frequencies. We also consider only species that are axially symmetric, and thus are able to reduce the dimensionality of our model. We can approximate the full 3D geometry of a jellyfish by simulating a 2D slice of the organism. This model reduction yields plausible results at a lower computational cost. From the 2D simulation, we extrapolate to a full 3D model. To prevent our extrapolated model from being artificially smooth, we give the final shape more variation by adding noise to the 3D geometry. This noise is inspired by empirical data of real jellyfish, and also by work with continuous noise functions from the graphics community. <p> Our 2D simulations are done numerically with ideas from the field of computational fluid dynamics. Specifically, we simulate the elastic volume of the jellyfish with a spring-mass system, and we simulate the surrounding fluid using the semi-Lagrangian method. To couple the particle-based elastic representation with the grid-based fluid representation, we use the immersed boundary method. We find this combination of methods to be a very efficient means of simulating the 2D slice with a minimal compromise in physical accuracy.

This thesis examines the phonology and morphology of Turkish Sign Language (TiD). TiD, being considered a full-fledged language, has a rich phonological and morphological system, as other sign and spoken languages do. For the purpose of this thesis / empirical data have been collected by means of a corpus study and various data elicitation tasks. As a main result of my study of TiD phonology, I propose a complete inventory of handshapes as well as a set of unmarked handshapes which are unique to TiD. I discuss the interaction between TiD finger-spelling and TiD phonology showing that well-formedness conditions constrain the use of finger-spelled letters in lexical signs I also discuss psycholinguistic evidence that sign languages have phonological systems, among them phonological effects on working memory and slips of the hand In the domain of TiD morphology, I investigate the three main morphological processes: inflection, derivation and compounding. Verb classification, plural properties, compounding, and reciprocals in TiD are investigated in detail. I argue that some TiD reciprocals use &ldquo / reciprocal neutral signing space&rdquo / whereby agreement becomes neutralized. TiD makes wide use of classifier constructions as for plural marking and for expressing movements of various human and non-human agents. The thesis indicates that TiD has its own grammar, including rich and diverse systems of phonology, morphology, and classification. Thus, TiD may have had a long historical development. The comparison between TiD and other sign languages shows that TiD has exclusive linguistic properties. The comparison of TiD as a visual-gestural system and Turkish as an auditory-vocal system helps to better understand the impact of modality on language phonology and morphology.

Thesis (M. Sc.)--University of Hong Kong, 1998. / Includes bibliographical references (leaf [154-159]).

[pt] Esse trabalho tem como objetivo desenvolver um modelo determinístico transiente de previsão de escorregamentos planares em encostas, para escalas em nível de bacia hidrográfica (1:2000 a 1:5000). No modelo são aplicadas as teorias de Green-Ampt (1934) e de O Loughlin (1986), essa última utilizada no programa SHALSTAB (MONTGOMERY e DIETRICH, 1994), além da teoria talude infinito 2D e 3D. Também são considerados nas análises a não saturação do solo e os efeitos da vegetação. O evento estudado para aplicação e teste do modelo refere-se ao ocorrido em 1996, nas bacias do Quitite e Papagaio em Jacarepaguá, Zona Oeste do Rio de Janeiro. Além do mapeamento do fator de segurança nas bacias, também são gerados mapas com o escoamento superficial acumulado, e tenta-se correlacionar ambos com as cicatrizes que ocorreram no caso de estudo. / [en] The aim of this work is to develop a physically-based transient model for the prediction of planar landslides in natural slopes. The application scale of the model is for a hydrographic basin (1:2000 to 1:5000). The theories of Green-Ampt (1934) and O Loughlin (1986), the second one used in the SHALSTAB program (MONTGOMERY e DIETRICH, 1994), and the infinite slope 2D and 3D are used in the model. The effect of the unsaturation and the vegetation is also considered in the analysis. The case study for the test of the model is the 1996 event that took place in the Quitite and Papagaio basins, in Jacarepaguá, Zona Oeste of Rio de Janeiro. Besides mapping the safety factor in the basins, maps of the accumulated runoff were also generated. This work also tries to correlate the runoff as another factor that caused the landslides.

Summaries en Afrikaans and English / Text in Afrikaans / Een van die kenmerke van leergestremde kinders is dat hulle, benewens hul leertekorte, dikwels ook gedragsprobleme manifesteer wat nie net hul leer benadeel nie, maar ook hul uiteindelike volwassewording. Talle skoolse opvoeders wat met hierdie kinders gemoeid is, is nie in staat om hierdie kinders se gedragsprobleme na behore aan te spreek nie. Die doel van hierdie studie is om enkele onderrigstrategiee daar te stel aan die hand waarvan bepaalde gedragsprobleme van leergestremde laerskoolkinders in die hoofstroom van die onderwys aangespreek kan word. V oordat daar oorgegaan is tot die beplanning van hierdie onderrigstrategiee, is daar op die etiologie en manifestasies van leergestremdheid gefokus. Vervolgens is enkele bestaande hulpverleningspraktyke bespreek en aan die hand van ortopedagogiese beginsels geevalueer. Aangesien hierdie hulpverleningspraktyke as ortopedagogies verantwoordbaar beskou is, kon dit as basis dien vir onderrigstrategiee vir die bantering van die volgende gedragsprobleme: aandagtekorte, hiperaktiwiteit, impulsiwiteit, hipoaktiwiteit, katastrofiese gedragsuitinge en aggressie. / One of the characteristics associated with learning disabled pupils is that they not only experience learning difficulties, but often manifest behavioural problems that impede their learning and eventual adulthood. Many educators involved with learning disabled pupils are unable to address the behavioural problems of these children effectively. The purpose of this study is to compile instructional strategies that could be put into practice when dealing with the behavioural problems of learning disabled pupils who are in the mainstream of education. Before planning these strategies, the etiology and manifestations of learning disabilities were addressed. Thereafter, orthopedagogical criteria were applied to evalute certain schools of thought regarding orthopedagogical practices. Having ascertained that the practices in question are orthopedagogically sound, instructional strategies, based on these practices, were planned to address the following behavioural problems: attention deficits, hyperactivity, impulsivity, hypoactivity, catastrophic reactions and aggression. / Educational Studies / M.Ed. (Orthopedagogics)

Práce je založena na pokusech, ve kterých se srovnával rozsah poškození a mortality kapra obecného (Cyprinus carpio, L.) ponechaného v klasickém vezírku (zpevněném i nezpevněném) a speciálním saku {--} "tunelu". Hlavním cílem práce je jednak rozšířit poznatky pro rekreační (sportovní) rybolov a především přispět k poznání správného způsobu uchovávání ulovených živých ryb, které si rybář rozhodl ponechat v živém stavu tak, aby byly minimalizovány negativní důsledky jejich držení před usmrcením a poukázat na šetrnější zacházení s rybou, ne-li zamezit jejich týrání.

Physical activity has been recommended for its importance in the prevention of disease and health, although amputees have lower levels of physical activity, as well as changes in specific characteristics that may change the nature of the relationship between physical activity and quality of life. Therefore, the aim of this study was to investigate factors associated with higher levels of physical activity as well as to verify the relationship between physical activity and quality of life. For such a cross-sectional study using forms with social and clinical questionnaires and quality of life WHOQOL -BREF and the IPAQ physical activity questions was conducted. For categorical variables the chi-square test p < 0.05 was used, the numerical variables were evaluated using the Student t test p < 0.05 and variables with p < 0.2 were entered into a logistic regression model . The level of physical activity was correlated only with the physical and psychological domains p < 0.05 quality of life, and factors related to physical activity levels were age , functional independence and participation in the rehabilitation program p < 0 , 05. There was no change in the nature of the relationship between physical activity and quality of life , and rehabilitation program was the only variable associated with higher levels of physical activity , an increased risk of chance in twenty- five times for the individual to be active. / A Atividade Física tem sido recomendada pela sua importância tanto na prevenção de doenças quanto na saúde. Porém indivíduos amputados apresentam menores níveis de prática de Atividade Física, além de alterações de características específicas que podem alterar a natureza da relação entre Atividade Física e Qualidade de Vida. Por isso, o objetivo deste estudo foi verificar os fatores relacionados com maiores níveis de Atividade Física, como também verificar a relação entre Atividade Física e Qualidade de Vida. Para tal, foi conduzido um estudo transversal utilizando formulários com perguntas sociais e clínicas e de questionários de Qualidade de Vida WHOQOL-BREF e de Atividade Física IPAQ. Para as variáveis categóricas foi utilizado o teste do qui quadrado p<0,05, as variáveis numéricas foram avaliadas através do teste t student p<0,05 e as variáveis que apresentaram p<0,2 foram inseridas no modelo de regressão logística. O nível de Atividade Física apresentou relação apenas com os domínios físico e psicológico p<0,05 da Qualidade de Vida, e os fatores relacionados com os níveis de Atividade Física foram: idade, independência funcional e a participação no programa de reabilitação p<0,05. Não houve alteração na natureza da relação entre nível de Atividade Física e Qualidade de Vida, e o Programa de Reabilitação foi à única variável associada com maiores níveis de Atividade Física, apresentando um risco de chance aumentado em vinte e cinco vezes para o indivíduo ser ativo.

Esse trabalho considera o brincar como uma área para os acontecimentos e experiências criativas da pessoa onde seu gesto genuíno pode se evidenciar. Utilizou a compreensão do brincar de D. W. Winnicott (1896-1971), como uma área intermediária de experiência e de relaxamento para o indivíduo engajado na tarefa humana de manter as realidades interna e externa separadas e inter-relacionadas. O brincar, compreendido como uma atividade cotidiana espontânea, compartilhada, criativa e que tem um fim em si mesma, é campo para os procedimentos do terapeuta ocupacional e, para aquelas crianças que não brincam ou têm dificuldades nessa atividade, um dos objetivos do processo terapêutico. Considerou não ser possível separar as atividades brincar do desenvolvimento e investimentos de ordem física, cognitiva, social e psíquica, se o terapeuta quiser proporcionar uma experiência à criança em que ela possa se desenvolver em sua totalidade e a partir de um percurso singular. Os objetivo foram apresentar e refletir sobre uma forma de compreender o brincar no processo de terapia ocupacional com crianças que têm deficiência física, na qual o brincar é, muitas vezes, um dos objetivos desse processo e, sempre, área na qual acontecimentos saudáveis, criativos e de experiências culturais podem ser realizados, favorecendo a participação social dessas crianças. Para essa investigação utilizou-se o levantamento bibliográfico de estudos sobre a temática da infância, deficiência, brincar, cultura e terapia ocupacional, articulados à experiência vivida na clínica no atendimento de crianças com deficiência na terapia ocupacional. Considerou a subjetividade do pesquisador implicado diretamente em todo o percurso da investigação, construída e decorrente da relação do indivíduo pesquisador com o indivíduo atendido na terapia ocupacional. A investigação seguiu uma proposta de pesquisa, do ponto de vista epistemológico, sujeito-sujeito e suas atividades, constituição da relação triádica na terapia ocupacional. Participaram quatro crianças com suas histórias, partes construídas no processo de terapia ocupacional, que possibilitaram a coleta de dados para ilustrar a discussão em torno do uso das atividades na área do brincar pelo terapeuta, assim como lembranças de outros momentos da experiência clínica. Utilizou o diário de campo para o registro dos acontecimentos na clínica, a entrevista aberta com familiar e a leitura documental. Discutiu três aspectos presentes nos procedimentos do terapeuta ocupacional: o ensino, o contorno e o reconhecimento, no contexto do uso do brincar como área para experiências de realização de atividades. Como resultado apontou a relevância dessa forma de usar o brincar para a avaliação da indicação de terapia ocupacional, a avaliação inicial e contínua do paciente e as ações de cuidado do terapeuta ocupacional que visam à facilitação da participação social da pessoa atendida. / In this thesis playing is considered as an area for creative happenings and experiences in which a person´s genuine gestures can be seen. It takes D. W. Winnicott´s (1896-1971) way of understanding playing, as an intermediate area of experience and relaxation for an individual engaged in the human task of keeping the internal and external realities separated and interrelated. Playing, understood as a daily activity that is spontaneous, shared and creative and that has a purpose in itself, is a field for the occupational therapist´s procedures, as well as one of the aims of the therapeutic process in those cases in which the children either do not play or have difficulties to do it. It is not considered possible to separate playing from physical, social and psychic development and investment, if the therapist wants the child to have experience so as to develop wholly and from a singular path. The aim was to present and think about a way of understanding playing in the occupational therapy process with physically disabled children. Playing is one of the purposes of that process a lot of times, and it is always an area in which healthy, creative and cultural experiences may happen, and such experiences favor those children´s social participation. A bibliography survey of the studies related to childhood, disability, playing, culture and occupational therapy was done, and it was linked with the clinical experience of attending disabled children in the occupational therapy. It considered the subjectivity of the researcher who was directly involved throughout the investigation. Such subjectivity was both formed and due to the relationship between the individual who was the researcher and the individual who was attended in the occupational therapy. The investigation followed a proposal of research from the epistemological point of view, subject-subject and their activities, the formation of the triad relationship in occupational therapy. Four children and their personal histories were parts of the study. Their histories were partly built in the occupational therapy process, and they made it possible to collect data to illustrate the discussion related to the use of playing activities by the therapist, as well as to remember other passages of the clinical experience. A book to register what happened in the clinic, the open interview with some members of the family and documentary reading were used. Three aspects present in the occupational therapist´s procedures were discussed: the teaching, the environment and the acknowledgement, in the context of playing as an area to experience the accomplishment of activities. As a result, it showed the importance of using playing to evaluate the necessity of taking occupational therapy, to evaluate the patient both initially and continually and to evaluate the occupational therapist´s caring actions to facilitate the social participation of the person who is being attended.