Catasetum é um gênero Neotropical com cerca de 130 espécies praticamente indistinguíveis quanto à morfologia vegetativa. Suas flores são primariamente unissexuais. As flores masculinas exibem uma excepcional variação morfológica e apresentam estaminódios modificados característicos deste gênero, que é tradicionalmente citado pela polinização exclusiva por abelhas euglossine. Este estudo avaliou a evolução dos principais atributos florais em Catasetum. Para isso, uma hipótese filogenética foi reconstruída utilizando matrizes individuais e combinadas de DNA nuclear e plastidial. Foram sequenciadas três regiões (ITS, rpS16 e trnL-F) para 80 espécies de Catasetum e 25 grupos externos. O gênero é monofilético e irmão de Clowesia em todas as análises. Alguns relacionamentos tiveram alto suporte. Nenhuma das classificações infragenéricas tradicionais pode ser reconhecida na filogenia. A partir deste resultado foi possível observar que a história evolutiva compreendeu várias reversões e convergências de caráter entre as espécies. O estado plesiomórfico e algumas tendências evolutivas são apresentados. As análises morfo-anatômicas e histoquímicas florais utilizaram flores frescas ou fixadas, cujo labelo foi seccionado e corado com Lugol 1% e Vermelho de Sudão III ou IV, sendo examinados através de microscopia de luz. Estas análises revelaram a tendência de aumento na complexidade do labelo apenas em flores masculinas. Também foi possível observar a relação direta entre a morfologia do labelo e a distribuição do tecido secretor. A análise de fragrâncias florais utilizou a técnica de coleta dinâmica combinada com análise via GC-MS. Essa análise confirmou o polimorfismo químico entre as espécies, embora a variabilidade interespecífica tenha sido baixa. Vários dos compostos identificados foram encontrados anteriormente na tíbia traseira de machos de euglossine ou têm sua atratividade conhecida através de estudos com iscas odoríferas. Nossos resultados revelaram ausência de padrão ou tendência evolutiva na composição das fragrâncias das espécies. A pressão seletiva causada pelos polinizadores, ao escolherem as espécies a serem visitadas, tem direcionado a evolução da biologia floral deste gênero. A morfologia, a distribuição do tecido secretor dos osmóforos e a fragrância emitida são complementares, atuando em conjunto para gerar respostas etológicas específicas dos polinizadores. A alta especificidade gerada por este mecanismo reduz o compartilhamento de polinizadores, levando ao transporte mais eficiente do pólen e diminuindo o fluxo gênico interespecífico. / Catasetum is a Netropical genus with ca. 130 species that are practically indistinguishable based on the vegetative morphology. The flowers are primarily unisexual. Male flowers have an exceptional morphological variation and possess modified staminodes as distinctive feature of this genus, which is traditionally cited as entirely pollinated by euglossine bees. The present study evaluated the evolution of the major floral features in Catasetum. To do that, one phylogenetical hypothesis was made using individual and combined matrices of nuclear and plastid DNA. Three regions where sequenced (ITS, rpS16 and trnL-F) for 80 species of Catasetum and 25 taxa of outgroups. The genus is monophyletic and sister to Clowesia in all analyses. Some relationships had high support, however the phylogenetical infrageneric signal was low. None of the traditional infrageneric classifications could be recognized in the phylogeny. From this result, it was possible to observe that the evolutionary history consists on several characters reversions and convergences between species. The plesiomorphic status and some evolutionary trends were recognized. The morpho-anatomy and histochemical analysis of flowers were made with fresh or fixed flowers, whose labellum was sectioned and stained with Lugol 1% and Sudan III or IV, and analyzed with light microscopy. Those analyses reveal a trend to increase labellum complexity in male flowers. It was also possible to observe a direct relation between labellum morphology and distribution of the secretory tissue. The floral scent analysis was made with the dynamic collection technic combined with GC-MS analysis. This analysis confirmed the chemical polymorphism between species, but the interspecific variability was low. Several compounds identified were previously founded in the hind tibiae of male euglossine or have its attractiveness know. Our results revealed an absence of evolution pattern or trend in the scent composition of the species. The selective pressure caused by pollinators, when choosing species to be visited, had guided the evolution of the floral biology of this genus. The morphology, the osmophore secretory tissue distribution and the floral scent are complimentary, acting together to generate specific ethological answers of the pollinators. The high specificity created by this mechanism decrease the sharing of pollinators, leading to a more efficient pollen transport and decreasing the interspecific gene flow.

Investigamos, nesta dissertação, a fonologia segmental e a morfossintaxe verbal Wayoro, especialmente, a estrutura argumental e a valência verbal. Nosso objetivo é oferecer um estudo destas áreas da gramática da língua, com base em dados originais e em modelos teóricos úteis para a explicação dos mesmos. No âmbito da fonologia, os pares contrastivos identificados evidenciam o seguinte inventário consonantal: oclusivas /p t tS k g kw gw/, nasais /m n N Nw/, fricativa /B/ e tepe /|/. As consoantes nasais realizam-se como nasais pósoralizadas, quando seguidas por vogal oral. Os fonemas vocálicos /i È o E a/ contrastam quanto à nasalidade e ao prolongamento. Descrevemos os processos fonológicos e morfofonológicos presentes nos dados, a saber, lenição e sonorização, neutralização e assimilação de nasalidade. Quanto à morfossintaxe verbal, inicialmente, apresentamos os morfemas característicos ou exclusivos da categoria verbal. A distribuição dos morfemas pessoais, em Wayoro, está relacionada à valência verbal: prefixos pessoais absolutivos funcionam como objeto e como sujeito do verbo intransitivo, ao passo que morfemas pessoais livres (ergativos) têm função de sujeito do verbo transitivo. O radical verbal é formado por uma raiz à qual se une o verbalizador e a vogal temática . Após a vogal temática, podem ser afixadas marcas de tempo. Examinamos a morfologia interna e a valência de cerca de 100 verbos Wayoro. Os verbalizadores ocorrem com verbos transitivos e intransitivos e, portanto, não estão associados a uma estrutura argumental única. Os verbos podem ser pluralizados através de substituição do verbalizador pelo sufixo , de duplicação da raiz verbal ou de supleção operações que pluralizam o evento (e não necessariamente os argumentos). Os morfemas de mudança de valência são prefixais e selecionam estrutura argumental específica. O prefixo {mõ-~õ-} causativo/transitivizador é usado apenas com verbos intransitivos, tornando-os transitivos. Dentro da proposta de Hale e Keyser (2002), verbos intransitivos que permitem transitivização automática são núcleos verbais que projetam complemento e especificador e podem ser tomados como complemento de um núcleo verbal superior (V1), de modo que o especificador funciona como sujeito da sentença intransitiva e como objeto da versão transitiva. Os testes realizados com o prefixo causativo/transitivizador mostram que {mõ-~õ-} pode ser interpretado como o núcleo superior, V1. O segundo prefixo de mudança de valência investigado é o intransitivizador . Tal morfema foi identificado com verbos que têm uma contraparte transitiva sem o morfema , com valor anticausativo e reflexivo, e verbos que não contam com correspondente transitivo (prefixo inerente), com propriedades de voz média. Por fim, analisamos construções em que o auxiliar {-mãNã} mandar, pedir, fazer toma como complemento um radical verbal transitivo ou intransitivo, inserindo um agente ou causa à sentença. De uma perspectiva tipológica, as sentenças com o auxiliar podem ser analisadas como causativas analíticas e as sentenças com o morfema causativo/transitivizador como causativas sintéticas. / This study investigates the segmental phonology and verbal morpho-syntax, particularly, the argument structure and valency of the verbs in Wayoro language. We aim to provide a study of these areas of the grammar of the language based on original data and subtle theoretical models to explain it. In phonology, the contrastive pairs identified show the following consonantal inventory: stops /p t tS k g kw gw/, nasals /m n N Nw/, fricative /B/ and tap /|/. The nasal consonants are post-oralized when followed by oral vowels. The vocalic phonemes /i È o E a/ show contrast in nasality and length. We describe the phonological and morphophonological processes in the data, namely, lenition, voicing, neutralization and nasal assimilation. Regarding verbal morpho-syntax, initially, we presented the characteristic or exclusive morphemes of the verbal category. The distribution of personal morphemes in Wayoro is related to the verbal valency: the absolutive personal prefixes function as transitive object and intransitive subject, whereas free personal morphemes (ergative) function as transitive subject. The verbs consist of a root, followed by a verbalizer morpheme and the thematic vowel . After the thematic vowel, verbs can receive temporal markers. We examined the internal morphology and valency of about 100 Wayoro verbs. The verbalizers occur with transitive and intransitive verbs, and therefore, are not associated with a single argument structure. Verbs may be pluralized by replacement of verbalizers by the suffix {- kw}, root reduplication and suppletion operations that pluralize the event (and not necessarily the arguments). The valency-changing morphemes are prefixes and select a specific argument structure. The prefix {mõ-~õ-} causative/transitivizer is only used with intransitive verbs, turning them transitive ones. According to Hale & Keyser (2002), intransitive verbs that allow simple (or automatic) transitivization are verbal heads that project both a complement and a specifier and can be taken as complement of an upper verbal head (V1), so that the specifier functions as subject in the intransitive sentences and as object in the transitive alternant. Tests with the causative/transitivizer prefix show that {mõ-~õ-} can be analyzed as the upper head, V1. The second valency-changing prefix investigated is the intransitivizer. This morpheme has been identified in verbs which have a transitive counterpart, without prefix, with anticausative and reflexive effects, and verbs that do not have corresponding transitive ( prefix inherent) with properties of the middle voice. Finally, we analyzed constructions in which the auxiliar {-mãNã} to order, to ask, to make takes transitive and intransitive verbs as complement and adds an agent or cause. From a typological point of view, constructions with that auxiliar may be analyzed as analytic causatives and constructions with the causative/transitivizer prefix as synthetic causatives.

La thèse s'articule autour du fonctionnement souvent spécifique des emprunts à l'arabe sur les plans phonétique et morphologique en Shingazidja, variété du comorien parlée sur l'île de Grande-Comore (Ngazidja). Selon le conditionnement phonétique dominant, les occlusives apparaissent à l'initiale lexicale et dans les complexes prénasalisés, les non-occlusives à l'intervocalique. <br />Du fait du prestige de l'arabe, nombre de termes d'origine arabe dans cette langue tendent à ne pas suivre ce conditionnement, qui impliquerait une modification de leur prononciation.<br />Cela a modifié l'équilibre phonologique de la langue, contribuant à la phonologisation de variantes positionnelles. <br />La forme même des emprunts suggère ainsi plusieurs couches, certains ayant été adaptés alors que d'autres résistèrent.<br /><br />La thèse est illustré par un dictionnaire shingazidja-français à entrée étymologique d'env. 6000 entrées.

Thematic interrelation is an underdeveloped field of inquiry in Lukan studies. The design and elegance of Lukan theology begs for guided investigation into a possible system of organisation that governs history and theology, that is, narrative and theme. Based on the Greimasian Actantial Model, morpho–syntactical structural–critical analysis of Luke and Acts reveals that the covenant concept in its operative aspect of service functions as an organising principle, structuring the narratives and facilitating thematic interrelation. A survey of representative Lukan research consisting of five methodologically determined approaches shows a commonality regarding Lukan purpose. These all share the “plan of God” as a fundamental concept, thus intimating its plausibility as a common organisational principle in the text. This observation encourages further analysis of Lukan narrative and meta–narrative as relevant subject matter. Investigation into the purpose and goals of Ancient Jewish and Ancient Greek literature suggests that the concepts of piety/holiness and justness combined with a notion of divine order and expectation demonstrates organisational capacity. Under the terms and conditions of the Old Covenant three non–exclusive themes/concepts hold organisational functionality and ability to facilitate thematic interrelation: Exodus typology, the covenant concept and the eschaton idea. Exodus typology connects narrative with theme, developing Israel’s story. The covenant idea frames stories using parallelism and gives the meta–story progression. The eschaton idea presents the Day of YHWH as an organisational principle guiding the story of judgment to restoration. It is observed that the covenant concept is the most prevalent of these themes/ideas. Assuming the conceptual unity of Luke and Acts and adopting a morpho–syntactical structuralist approach, it was observed that the covenant concept in its operative aspect of service occurred as Helper at ten places, determining the development and structure of the meta–narrative. According to the Greimasian Actantial Model, Israel failed to fulfil its covenant–based mandate to serve God and shine God’s light of mercy to the nations. Jesus, Israel’s new Helper, becomes the Subject and by his covenant–based ministry, characterised as the greatest service, resolves the problem that prevents Israel from carrying out its divine mandate and sets the stage for its fulfilment. In Jesus Israel is given new leaders, an ethical platform of discipleship and the Holy Spirit. The apostle Paul as the epitomised and exemplary witness and servant of Jesus fulfils what Israel could not. He is vindicated in righteousness and shares in the Isaianic ministry of Jesus, to bear witness to leaders and to shine God’s light to the nations. Paul is unhindered in this ministry. Additionally, in thematic–critical terms, the key placement of the covenant concept in its operative aspect of service at plot–defining junctures features its catalytic dynamic as a “template” concept advancing the re–conceptualising of themes and providing a platform for meaningful relation. The evidence thus suggests that the covenant concept in its operative aspect structures the conjoined narratives of Luke and Acts. It also provides a basis for relation between the divine and humans in the context of the history of God’s salvation, linking history and theology, and makes possible a discernible means to thematic interrelation. / Thesis (Ph.D. (New Testament))--North-West University, Potchefstroom Campus, 2011.

Thematic interrelation is an underdeveloped field of inquiry in Lukan studies. The design and elegance of Lukan theology begs for guided investigation into a possible system of organisation that governs history and theology, that is, narrative and theme. Based on the Greimasian Actantial Model, morpho–syntactical structural–critical analysis of Luke and Acts reveals that the covenant concept in its operative aspect of service functions as an organising principle, structuring the narratives and facilitating thematic interrelation. A survey of representative Lukan research consisting of five methodologically determined approaches shows a commonality regarding Lukan purpose. These all share the “plan of God” as a fundamental concept, thus intimating its plausibility as a common organisational principle in the text. This observation encourages further analysis of Lukan narrative and meta–narrative as relevant subject matter. Investigation into the purpose and goals of Ancient Jewish and Ancient Greek literature suggests that the concepts of piety/holiness and justness combined with a notion of divine order and expectation demonstrates organisational capacity. Under the terms and conditions of the Old Covenant three non–exclusive themes/concepts hold organisational functionality and ability to facilitate thematic interrelation: Exodus typology, the covenant concept and the eschaton idea. Exodus typology connects narrative with theme, developing Israel’s story. The covenant idea frames stories using parallelism and gives the meta–story progression. The eschaton idea presents the Day of YHWH as an organisational principle guiding the story of judgment to restoration. It is observed that the covenant concept is the most prevalent of these themes/ideas. Assuming the conceptual unity of Luke and Acts and adopting a morpho–syntactical structuralist approach, it was observed that the covenant concept in its operative aspect of service occurred as Helper at ten places, determining the development and structure of the meta–narrative. According to the Greimasian Actantial Model, Israel failed to fulfil its covenant–based mandate to serve God and shine God’s light of mercy to the nations. Jesus, Israel’s new Helper, becomes the Subject and by his covenant–based ministry, characterised as the greatest service, resolves the problem that prevents Israel from carrying out its divine mandate and sets the stage for its fulfilment. In Jesus Israel is given new leaders, an ethical platform of discipleship and the Holy Spirit. The apostle Paul as the epitomised and exemplary witness and servant of Jesus fulfils what Israel could not. He is vindicated in righteousness and shares in the Isaianic ministry of Jesus, to bear witness to leaders and to shine God’s light to the nations. Paul is unhindered in this ministry. Additionally, in thematic–critical terms, the key placement of the covenant concept in its operative aspect of service at plot–defining junctures features its catalytic dynamic as a “template” concept advancing the re–conceptualising of themes and providing a platform for meaningful relation. The evidence thus suggests that the covenant concept in its operative aspect structures the conjoined narratives of Luke and Acts. It also provides a basis for relation between the divine and humans in the context of the history of God’s salvation, linking history and theology, and makes possible a discernible means to thematic interrelation. / Thesis (Ph.D. (New Testament))--North-West University, Potchefstroom Campus, 2011.

Made available in DSpace on 2014-06-11T19:32:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-07-31Bitstream added on 2014-06-13T21:03:59Z : No. of bitstreams: 1 fortes_e_dr_rcla.pdf: 3795155 bytes, checksum: 325b5a6aa2479f67ec71e4954cc2fa16 (MD5) / O rio Ivinhema constitui um importante afluente da margem direita do rio Paraná e drena uma série de terraços, superfícies geomorfológicas e feições associadas, a despeito de as baixas declividades sugerirem, numa análise preliminar, um relevo monótono e homogêneo. A presente tese teve como propósito maior o estudo das feições do relevo na área do baixo curso do rio Ivinhema, buscando compreender a sua evolução, no contexto de suas estruturas, de suas morfologias e de seus depósitos sedimentares. Os estudos, realizados na escala 1:60.000, permitiram a identificação de terraços, planícies, leques aluviais e superfícies erosivas. O Terraço Alto (TRA) corresponde à superfície mais elevada e antiga da área de trabalho; o Terraço Médio (TRM), identificado pela grande quantidade de depressões e lagos, que emprestam uma característica peculiar a essa superfície, pois representam um nível rebaixado por processos tectoerosivos do Terraço Alto. O Terraço Baixo (TRB) apresenta uma série de paleocanais posicionados em até 10m de altura em relação ao canal atual do rio Ivinhema, denotando atividade tectônica holocênica. A Planície do Rio Ivinhema divide-se em alta (PRIa) e baixa (PRIb), e corresponde a uma superfície plana, cuja largura aumenta para montante; freqüentemente ela pode ser inundada pelas águas do rio Ivinhema, à exceção do trecho próximo ao Terraço Baixo que se encontra soerguido. A planície do rio Paraná representa igualmente uma área plana, freqüentemente inundada pelas águas do rio homônimo, e apresenta, em seu interior, paleoilhas, cuja coalescência teria sido responsável pela formação da referida planície. Os Leques Aluviais Alto (LEA) e Baixo (LEB) constituem cones de dejeção, cuja diferenciação é de caráter topográfico e temporal...

Catasetum é um gênero Neotropical com cerca de 130 espécies praticamente indistinguíveis quanto à morfologia vegetativa. Suas flores são primariamente unissexuais. As flores masculinas exibem uma excepcional variação morfológica e apresentam estaminódios modificados característicos deste gênero, que é tradicionalmente citado pela polinização exclusiva por abelhas euglossine. Este estudo avaliou a evolução dos principais atributos florais em Catasetum. Para isso, uma hipótese filogenética foi reconstruída utilizando matrizes individuais e combinadas de DNA nuclear e plastidial. Foram sequenciadas três regiões (ITS, rpS16 e trnL-F) para 80 espécies de Catasetum e 25 grupos externos. O gênero é monofilético e irmão de Clowesia em todas as análises. Alguns relacionamentos tiveram alto suporte. Nenhuma das classificações infragenéricas tradicionais pode ser reconhecida na filogenia. A partir deste resultado foi possível observar que a história evolutiva compreendeu várias reversões e convergências de caráter entre as espécies. O estado plesiomórfico e algumas tendências evolutivas são apresentados. As análises morfo-anatômicas e histoquímicas florais utilizaram flores frescas ou fixadas, cujo labelo foi seccionado e corado com Lugol 1% e Vermelho de Sudão III ou IV, sendo examinados através de microscopia de luz. Estas análises revelaram a tendência de aumento na complexidade do labelo apenas em flores masculinas. Também foi possível observar a relação direta entre a morfologia do labelo e a distribuição do tecido secretor. A análise de fragrâncias florais utilizou a técnica de coleta dinâmica combinada com análise via GC-MS. Essa análise confirmou o polimorfismo químico entre as espécies, embora a variabilidade interespecífica tenha sido baixa. Vários dos compostos identificados foram encontrados anteriormente na tíbia traseira de machos de euglossine ou têm sua atratividade conhecida através de estudos com iscas odoríferas. Nossos resultados revelaram ausência de padrão ou tendência evolutiva na composição das fragrâncias das espécies. A pressão seletiva causada pelos polinizadores, ao escolherem as espécies a serem visitadas, tem direcionado a evolução da biologia floral deste gênero. A morfologia, a distribuição do tecido secretor dos osmóforos e a fragrância emitida são complementares, atuando em conjunto para gerar respostas etológicas específicas dos polinizadores. A alta especificidade gerada por este mecanismo reduz o compartilhamento de polinizadores, levando ao transporte mais eficiente do pólen e diminuindo o fluxo gênico interespecífico. / Catasetum is a Netropical genus with ca. 130 species that are practically indistinguishable based on the vegetative morphology. The flowers are primarily unisexual. Male flowers have an exceptional morphological variation and possess modified staminodes as distinctive feature of this genus, which is traditionally cited as entirely pollinated by euglossine bees. The present study evaluated the evolution of the major floral features in Catasetum. To do that, one phylogenetical hypothesis was made using individual and combined matrices of nuclear and plastid DNA. Three regions where sequenced (ITS, rpS16 and trnL-F) for 80 species of Catasetum and 25 taxa of outgroups. The genus is monophyletic and sister to Clowesia in all analyses. Some relationships had high support, however the phylogenetical infrageneric signal was low. None of the traditional infrageneric classifications could be recognized in the phylogeny. From this result, it was possible to observe that the evolutionary history consists on several characters reversions and convergences between species. The plesiomorphic status and some evolutionary trends were recognized. The morpho-anatomy and histochemical analysis of flowers were made with fresh or fixed flowers, whose labellum was sectioned and stained with Lugol 1% and Sudan III or IV, and analyzed with light microscopy. Those analyses reveal a trend to increase labellum complexity in male flowers. It was also possible to observe a direct relation between labellum morphology and distribution of the secretory tissue. The floral scent analysis was made with the dynamic collection technic combined with GC-MS analysis. This analysis confirmed the chemical polymorphism between species, but the interspecific variability was low. Several compounds identified were previously founded in the hind tibiae of male euglossine or have its attractiveness know. Our results revealed an absence of evolution pattern or trend in the scent composition of the species. The selective pressure caused by pollinators, when choosing species to be visited, had guided the evolution of the floral biology of this genus. The morphology, the osmophore secretory tissue distribution and the floral scent are complimentary, acting together to generate specific ethological answers of the pollinators. The high specificity created by this mechanism decrease the sharing of pollinators, leading to a more efficient pollen transport and decreasing the interspecific gene flow.

Investigamos, nesta dissertação, a fonologia segmental e a morfossintaxe verbal Wayoro, especialmente, a estrutura argumental e a valência verbal. Nosso objetivo é oferecer um estudo destas áreas da gramática da língua, com base em dados originais e em modelos teóricos úteis para a explicação dos mesmos. No âmbito da fonologia, os pares contrastivos identificados evidenciam o seguinte inventário consonantal: oclusivas /p t tS k g kw gw/, nasais /m n N Nw/, fricativa /B/ e tepe /|/. As consoantes nasais realizam-se como nasais pósoralizadas, quando seguidas por vogal oral. Os fonemas vocálicos /i È o E a/ contrastam quanto à nasalidade e ao prolongamento. Descrevemos os processos fonológicos e morfofonológicos presentes nos dados, a saber, lenição e sonorização, neutralização e assimilação de nasalidade. Quanto à morfossintaxe verbal, inicialmente, apresentamos os morfemas característicos ou exclusivos da categoria verbal. A distribuição dos morfemas pessoais, em Wayoro, está relacionada à valência verbal: prefixos pessoais absolutivos funcionam como objeto e como sujeito do verbo intransitivo, ao passo que morfemas pessoais livres (ergativos) têm função de sujeito do verbo transitivo. O radical verbal é formado por uma raiz à qual se une o verbalizador e a vogal temática . Após a vogal temática, podem ser afixadas marcas de tempo. Examinamos a morfologia interna e a valência de cerca de 100 verbos Wayoro. Os verbalizadores ocorrem com verbos transitivos e intransitivos e, portanto, não estão associados a uma estrutura argumental única. Os verbos podem ser pluralizados através de substituição do verbalizador pelo sufixo , de duplicação da raiz verbal ou de supleção operações que pluralizam o evento (e não necessariamente os argumentos). Os morfemas de mudança de valência são prefixais e selecionam estrutura argumental específica. O prefixo {mõ-~õ-} causativo/transitivizador é usado apenas com verbos intransitivos, tornando-os transitivos. Dentro da proposta de Hale e Keyser (2002), verbos intransitivos que permitem transitivização automática são núcleos verbais que projetam complemento e especificador e podem ser tomados como complemento de um núcleo verbal superior (V1), de modo que o especificador funciona como sujeito da sentença intransitiva e como objeto da versão transitiva. Os testes realizados com o prefixo causativo/transitivizador mostram que {mõ-~õ-} pode ser interpretado como o núcleo superior, V1. O segundo prefixo de mudança de valência investigado é o intransitivizador . Tal morfema foi identificado com verbos que têm uma contraparte transitiva sem o morfema , com valor anticausativo e reflexivo, e verbos que não contam com correspondente transitivo (prefixo inerente), com propriedades de voz média. Por fim, analisamos construções em que o auxiliar {-mãNã} mandar, pedir, fazer toma como complemento um radical verbal transitivo ou intransitivo, inserindo um agente ou causa à sentença. De uma perspectiva tipológica, as sentenças com o auxiliar podem ser analisadas como causativas analíticas e as sentenças com o morfema causativo/transitivizador como causativas sintéticas. / This study investigates the segmental phonology and verbal morpho-syntax, particularly, the argument structure and valency of the verbs in Wayoro language. We aim to provide a study of these areas of the grammar of the language based on original data and subtle theoretical models to explain it. In phonology, the contrastive pairs identified show the following consonantal inventory: stops /p t tS k g kw gw/, nasals /m n N Nw/, fricative /B/ and tap /|/. The nasal consonants are post-oralized when followed by oral vowels. The vocalic phonemes /i È o E a/ show contrast in nasality and length. We describe the phonological and morphophonological processes in the data, namely, lenition, voicing, neutralization and nasal assimilation. Regarding verbal morpho-syntax, initially, we presented the characteristic or exclusive morphemes of the verbal category. The distribution of personal morphemes in Wayoro is related to the verbal valency: the absolutive personal prefixes function as transitive object and intransitive subject, whereas free personal morphemes (ergative) function as transitive subject. The verbs consist of a root, followed by a verbalizer morpheme and the thematic vowel . After the thematic vowel, verbs can receive temporal markers. We examined the internal morphology and valency of about 100 Wayoro verbs. The verbalizers occur with transitive and intransitive verbs, and therefore, are not associated with a single argument structure. Verbs may be pluralized by replacement of verbalizers by the suffix {- kw}, root reduplication and suppletion operations that pluralize the event (and not necessarily the arguments). The valency-changing morphemes are prefixes and select a specific argument structure. The prefix {mõ-~õ-} causative/transitivizer is only used with intransitive verbs, turning them transitive ones. According to Hale & Keyser (2002), intransitive verbs that allow simple (or automatic) transitivization are verbal heads that project both a complement and a specifier and can be taken as complement of an upper verbal head (V1), so that the specifier functions as subject in the intransitive sentences and as object in the transitive alternant. Tests with the causative/transitivizer prefix show that {mõ-~õ-} can be analyzed as the upper head, V1. The second valency-changing prefix investigated is the intransitivizer. This morpheme has been identified in verbs which have a transitive counterpart, without prefix, with anticausative and reflexive effects, and verbs that do not have corresponding transitive ( prefix inherent) with properties of the middle voice. Finally, we analyzed constructions in which the auxiliar {-mãNã} to order, to ask, to make takes transitive and intransitive verbs as complement and adds an agent or cause. From a typological point of view, constructions with that auxiliar may be analyzed as analytic causatives and constructions with the causative/transitivizer prefix as synthetic causatives.

L’étude présentée dans ce manuscrit porte sur la réplication de structures naturelles multi-échelles et multifonctionnelles, que sont les ailes des papillons Morpho rhetenor, Morpho menelaus et Papilio ulysse, ou celles de la cigale Cicada orni. De telles structures sont en effet constituées de sous-structures à différentes échelles, du centimètre au nanomètre, et à chacune de ces échelles est associée une propriété ou fonction. On parle alors de multifonctionnalité. Cet atout, très recherché actuellement pour nos futurs objets et matériaux, est accessible par deux voies de complexification : celle de la composition chimique du ou des matériaux constituant l’objet (matériaux composites, hybrides organique-inorganique) et/ou celle de leur géométrie (structuration). Or, si nos connaissances en chimie nous permettent de mettre en œuvre la première voie, l’élaboration de structures multi-échelles est encore difficile par nos techniques actuelles de structuration (lithographie par exemple). Ainsi, pour augmenter les propriétés d’un système possédant une géométrie multi-échelles existante dans la nature, nous avons réalisé des répliques des structures naturelles précédemment évoquées dans des matériaux inorganiques (TiO2 et SiO2), soit des matériaux très différents du complexe chitino-protéique qui constituent les ailes organiques. A cette fin, trois méthodes ont été utilisées : un dépôt de matière dans les structures naturelles par voie sol-gel, un dépôt par pulvérisation cathodique et une minéralisation directe de la structure des ailes, s’inspirant de processus de biominéralisation. / The present study deals with the replication of multiscale and multifunctional natural structures. These natural structures are wings of Morpho rhetenor, Morpho menelaus and Papilio ulysse butterflies, and those of Cicada orni cicada. Such structures are composed of smaller structures at different scales, from centimetre to nanometre, and to each of these scales is associated a property or a function. This we call multifunctionality. This multifunctionality is expected to become a property of our future objects or materials, and can be achieved by two different ways: to make the material(s) chemical composition of the object more complex (composite, hybrid organic-inorganic materials) and/or to make its architecture more complex (structuration). Although it is possible to achieve the first (chemical composition), we have so far been unable to successfully make multiscale structures with our current structuration techniques (lithography for example). Therefore, to increase the properties of a system characterised by a multiscale structure seen in nature, we have made replicas of the natural structures previously presented in inorganic materials (TiO2 and SiO2). That is to say, very different materials in comparison with the natural chitin-protein complex. To do this, three methods were used: a sol-gel solution deposition in the natural structures, a physical vapor deposition and a direct mineralization of the wings structure, which is inspired by natural biomineralization processes.

This PhD thesis provides a morpho-syntactic description of Northern Sotho from a computational perspective. While a number of publications describe morphological and syntactical aspects of this language, may it be in the form of prescriptive study books (inter alia Lombard (1985); Van Wyk et al. (1992); Poulos and Louwrens (1994)) or of descriptive articles in linguistic journals or conference proceedings (inter alia Anderson and Kotz´e (2006); Kosch (2006); De Schryver and Taljard (2006)), so far no comprehensive description is available that would provide a basis for developing a rule-based parser to analyse Northern Sotho on sentence level. This study attempts to fill the gap by describing a substantial grammar fragment. Therefore, Northern Sotho morpho-syntactic phenomena are explored which results in the following descriptions: <ul> <li> language units of Northern Sotho are identified, i.e. the tokens and words that form the language. These are sorted into word class categories (parts of speech), using the descriptions of Taljard et al. (2008) as a basis; </li> <li> the formal relationships between these units, wherever possible on the level of parts of speech, are described in the form of productive morpho-syntactic phrase grammar rules. These rules are defined within the framework of generative grammar. <br></li> </ul> Additionally, an attempt is made to find generalisations on the contextual distribution of the many items contained in verbs which are polysemous in terms of their parts of speech. The grammar rules described in the preceding chapter are now explored in order to find patterns in the co-occurrence of parts of speech leading towards a future, more general linguistic modelling of Northern Sotho verbs. It is also shown how a parser could work his way step-by-step doing an analysis of a complete sentence making use of a lexicon and the rules developed here. We have also implemented some relevant phrase grammar rules as a constraint-based grammar fragment, in line with the theory of Lexical-Functional Grammar (Kaplan and Bresnan, 1982). Here, we utilized the Xerox Linguistic Environment (XLE) with the friendly permission of the Xerox Palo Alto Research Centre (PARC). Lastly, the study contains some basic definitions for a proposed machine translation (MT) into English attempting to support the development of MT-rules. An introduction to MT and a first contrastive description of phenomena of both languages is provided. / Thesis (PhD)--University of Pretoria, 2010. / African Languages / unrestricted