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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.
191

Využití antistresové látky pro minimalizaci dopadu stresorů na produkci zahradních plodin / Use of anti-stress agents to minimize the consequences of stressors on the production of Horticultural Crops

Nosálková, Monika January 2016 (has links)
The objective of the thesis is to research the physiological differences between picked genotypes of Capsicum annuum and the effect of lower temperatures in the beginning of ontogeny. Another objective is to find out how Capsicum annuum plants react to application of anti-stress agent Atonic and to determine the most appropriate physiological indicators of resistence to low temperatures. Capsicum annuum ranks among thermophilic crops for which the temperature optimum is of 22 - 25 °C during the day and 18 - 20 °C overnight. They are planted at the field station at the time when ground frost may occur. These can cause physiological changes in the plant or even cause her death. Three varieties were chosen for the experiment: Amy, Eva a Lydia. Plants were divided into a control group and treatment group. Both groups were further divided into two additional groups - with and without the application of Atonic in the beginning of vegetative growth (6th day of exposure to stress). Control group plants were grown at 20 °C and stressed plants were moved into a klimabox with temperature of 5 °C throughout the entire day. Such temperature may occur after planting the plants into an outdoor habitat. Proline content in leaves of Capsicum annuum and relative discharge of electrolyte was studied in two - day intervals. From the obtained results it can be concluded that the accumulation of proline was the highest for Lydia variety in a stressed scenario with the application of Atonic and the lowest proline content was found in in the Amy variety in a control group. Furthermore, it was discovered that the ontogeny of plants has an effect on the accumulation of proline and relative discharge of electrolyte from the beginning of the measurement. The absolute highest electrolyte discharge was measured in the Lydia variety in a stressed scenario and the lowest one was present in the Amy variety in a control group. These results confirm the hypothesis.
192

Assessing Inter-joint Coordination during Walking

Chiu, Shiu-Ling, Chiu, Shiu-Ling January 2012 (has links)
Coordination indicates the ability to assemble and maintain a series of proper relations between joints or segments during motions. In Dynamical Systems Theory (DST), movement patterns are results of a synergistic organization of the neuromuscular system based on the constraints of anatomical structures, environmental factors, and movement tasks. Human gait requires the high level of neuromuscular control to regulate the initiation, intensity and adaptability of movements. To better understand how the neuromuscular system organizes and coordinates movements during walking, examination of single joint kinematics and kinetics alone may not be sufficient. Studying inter-joint coordination will provide insights into the essential timing and sequencing of neuromuscular control over biomechanical degrees of freedom, and the variability of inter-joint coordination would reflect the adaptability of such control. Previous studies assessing inter-joint coordination were mainly focused on neurological deficiencies, such as stroke or cerebral palsy. However, information on how inter-joint coordination is modulated with different constraints, such as walking speeds, aging, brain injury or joint dysfunctions, are limited. This knowledge could help us in identifying the potential risks during walking and improve the performance of individuals with movement impairments. The purpose of the present study was to investigate the properties of inter-joint coordination pattern and variability during walking with different levels of neuromuscular system perturbations using a DST approach, including an overall neuromuscular systemic degeneration, a direct insult to the brain, and a joint disease. We found that aging seemed to reduce the pattern adaptability of neuromuscular control. Isolated brain injury and joint disease altered the coordination pattern and exaggerated the variability, indicating a poor neuromuscular control. To improve gait performances for different populations, clinical rehabilitation should be carefully designed as different levels of neuromuscular system constraints would lead to different needs for facilitating appropriate coordinative movement. This dissertation includes both previously published/unpublished and coauthored material.
193

A acessibilidade das construções relativas e a aquisição da escrita / Accessibility of relative constructions and writing acquisition

Codinhoto, Gabriela Maria de Oliveira [UNESP] 14 July 2016 (has links)
Submitted by Gabriela Maria de Oliveira null (gabrielaolvr@gmail.com) on 2016-07-25T15:51:10Z No. of bitstreams: 1 Gabriela Oliveira-Codinhoto TESE FINAL Biblioteca.pdf: 1741339 bytes, checksum: 559d704ad34b55f6fc6941bcddc433fd (MD5) / Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-07-28T12:17:30Z (GMT) No. of bitstreams: 1 codinhoto_gmo_dr_sjrp.pdf: 1741339 bytes, checksum: 559d704ad34b55f6fc6941bcddc433fd (MD5) / Made available in DSpace on 2016-07-28T12:17:30Z (GMT). No. of bitstreams: 1 codinhoto_gmo_dr_sjrp.pdf: 1741339 bytes, checksum: 559d704ad34b55f6fc6941bcddc433fd (MD5) Previous issue date: 2016-07-14 / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / O principal objetivo deste trabalho foi o estudo das restrições à acessibilidade das construções relativas no processo de aquisição de escrita a partir de uma perspectiva funcionalista de base holandesa. Partindo da proposta de Keenan e Comrie (1977), que prevê restrições de ordem (morfos)sintática para a relativização, propusemos um novo olhar para acessibilidade das OR, não mais baseado unicamente na morfossintaxe, mas também, e principalmente, nos processos de natureza pragmática, semântica e cognitiva, como os propostos por Dik (1997) e O’Grady (2011). A hipótese fundamental do trabalho é comprovar a proeminência não da relação gramatical de sujeito, como postulam Keenan e Comrie (1977), mas de uma escala de topicidade e animacidade e de uma escala de distância entre a lacuna e o material de preenchimento na oração relativa, de natureza cognitiva e referencial. Entre os processos de codificação morfossintática envolvidos na construção relativa, nos interessou examinar a hipótese de que a estratégia de pronome relativo não está presente na gramática dos alunos em processo de letramento formal, tese já sustentada por Kenedy (2007) em estudo de aquisição de linguagem de base gerativista; e defender a hipótese de que, na realidade, as crianças, que já dominam especialmente a estratégia de lacuna, a mais disseminada também na fala do adulto (cf. CAMACHO, 2012; 2014; 2016; inédito), a estendem, da posição de sujeito e de objeto direto, para todas as demais funções passíveis de serem relativizadas no português. Para confirmar ou refutar as hipóteses apresentadas, utilizamos como córpus de análise textos produzidos por alunos do Ensino Fundamental I de duas escolas públicas de São José do Rio Preto, pertencentes ao banco de dados de textos escritos compilado por Capristano (2001-2004), no âmbito dos estudos produzidos pelo Grupo de Pesquisa Estudos sobre a Linguagem. A análise dos resultados permitiu a conclusão de que, além de propiciar aos alunos o conhecimento de traços e propriedades morfossintáticos das relativas, o desenvolvimento do processo de escolarização ativa um domínio maior das variáveis contextuais de uso, o que gera, consequentemente, um acréscimo não só de frequência, mas também de qualidade da informação construída. Já em relação aos critérios semânticos e cognitivos que atuam na relativização, foi possível confirmar a hipótese de O’Grady (2011) de que não há, em línguas de relativas pós-nominais como o português, uma supremacia de acessibilidade do sujeito em detrimento do objeto, como prevê a Hierarquia de Acessibilidade (HA), uma vez que ambos dispõem do mesmo estatuto cognitivo e funcional. Na realidade, a principal diferença entre as duas funções sintáticas mais básicas da hierarquia de Keenam e Comrie (1977) é motivada por diferenças semânticas, como o traço de animacidade das entidades participantes da relativização de objeto. Os dados mostraram, enfim, que a escala de animacidade é mais relevante para a relativização do que as funções sintáticas, corroborando a hipótese inicial deste trabalho. / The main objective of this research was the study of restrictions on the accessibility of relative constructions in the writing acquisition process from a Dutch functionalist perspective. Starting from the model proposed by Keenan and Comrie (1977), which predicts (morpho)syntactic restrictions to relativization, we proposed a new look at the accessibility in relative clauses, no longer based solely on morphosyntax, but also and especially on pragmatic, semantic and cognitive processes, as the ones proposed by Dik (1997) and O'Grady (2011). The fundamental hypothesis of this work is to prove the prominence not of the grammatical relation of the subject, as postulated by Keenan and Comrie (1977), but of a scale of topicity and animacy and a scale of the distance between filler and gap in relative clauses, both cognitively and referentially. Among the morphosyntactic coding processes involved in the relative construction, we were interested in examining the hypothesis that the relative pronoum strategy is not present in the grammar of students during the formal literacy process, which was already sustained by Kenedy (2007) in a generative-based study on language acquisition, and also in defending the hypothesis that, in fact, children who already master the gapping strategy, which is the most frequent in adult speech (cf. CAMACHO, 2012; 2014; 2016; unpublished), also extend it from the position of subject and direct object to all other functions that can be relativized in Portuguese. In order to confirm or refute the presented hypotheses, we used as our analysis corpus some texts produced by elementary school students in two public schools in São José do Rio Preto, which belong to the database of written texts compiled by Capristano (2001-2004), in the scope of the studies produced by the Estudos sobre a Linguagem Research Group. The analysis of the results allowed us to conclude that, besides providing students with the knowledge on morphosyntactic features and properties of relatives, the development of the learning process also activates a greater understanding of contextual variables of use, which consequently generates an increase not only in the frequency but also in the quality of constructed information. In relation to the semantic and cognitive criteria that work in relativization, it was possible to confirm the hypothesis by O'Grady (2011) that in languages with post-nominal relatives such as Portuguese there is a supremacy of accessibility of the subject at the expense of the object, as predicted by the Accessibility Hierarchy (AH), since both have the same cognitive and functional status. In fact, the main difference between the two most basic syntactic functions in Keenam and Comrie hierarchy (1977) is motivated by semantic differences, as animacy feature of the participating entities in the relativization of the object. The data showed, therefore, that the animacy scale is more relevant to the relativization than the syntactic functions, corroborating the initial hypothesis of this work. / FAPESP: 2013/00065-5
194

Can't Keep Up with the Joneses: How Relative Deprivation Pushes Internal Migration in Austria

Jestl, Stefan, Moser, Mathias, Raggl, Anna K. 23 February 2017 (has links) (PDF)
We estimate the effect of regional income inequality on emigration rates of Austrian municipalities using a unique data set that is constructed We estimate the effect of regional income inequality on emigration rates of Austrian municipalities using a unique data set that is constructed based on individual level data from Austrian administrative registers. The register-based data contains information on the municipality of residence of all individuals aged 16 and over that have their main residency in Austria, as well as their income and socio-demographic characteristics. Aggregating this information to the municipality level allows us to assess the role of relative deprivation - a measure of relative income - on top of absolute income in shaping internal migration in Austria. We find that increases in relative deprivation in a municipality lead to higher emigration from the municipality. Allowing for heterogeneous effects across income, education, and age groups reveals that the effect is stronger among those with comparably low levels of income, and among low skilled and young individuals. / Series: INEQ Working Paper Series
195

Aspectos epidemiológicos de risco associados à prevalência de Leishmaniose Visceral Canina no município de Piacatu. /

Rodrigues, Tamiris Fagundes January 2018 (has links)
Orientador: Tereza Cristina Cardoso da Silva / Coorientadora: Katia Denise Saraiva Bresciani / Banca: Ana Carolina Borsanelli / Banca: Andréa Fontes Garcia / Resumo: Leishmaniose visceral é uma doença infecciosa, de potencial zoonótico, negligenciada e um sério problema de saúde pública em muitas partes do mundo. Dada à importância epidemiológica, a pesquisa teve como objetivo identificar soroprevalência, distribuição espacial e os fatores de risco relacionados à ocorrência de casos de leishmaniose visceral canina (LVC) no município de Piacatu. Foram analisados dados de inquérito censitário canino, com coleta de amostras de 833 animais, com posterior mapeamento dos casos positivos e aplicação de questionário epidemiológico casa a casa em locais de ocorrência de LVC. Baseado nos dados da análise soro- epidemiológica e espacial observou-se que ocorreram associações significativas entre fatores de risco e prevalência de LVC. Medidas de controle da LV necessitam ser intensificadas e direcionadas ao controle de vetores com identificação de flebótomos infectados, manejo ambiental e avaliação do real potencial de transmissão de gatos e animais considerados sorologicamente negativos. / Abstract: Visceral leishmaniasis is an infectious disease of zoonotic potential, neglected and a serious public health problem in many parts of the world. Given the epidemiological importance, the research aimed to identify seroprevalence, spatial distribution and risk factors related to the occurrence of cases of canine visceral leismaniasis (LVC) in the city of Piacatu. Data from a canine census survey were analyzed, with samples collected from 833 animals, with subsequent mapping of the positive cases and application of an epidemiological questionnaire at places with LVC occurrence. Based on data from the seroepidemiological and spatial analysis it was observed that there were significant associations between risk factors and prevalence of LVC. Control measures of LV need to be intensified and directed to the control of vectors with identification of infected sandflies, environmental management and evaluation of the real transmission potential of cats and animals considered serologically negative. / Mestre
196

Relative efficiency of surface energy budgets over different land covers

January 2012 (has links)
abstract: The partitioning of available solar energy into different fluxes at the Earth's surface is important in determining different physical processes, such as turbulent transport, subsurface hydrology, land-atmospheric interactions, etc. Direct measurements of these turbulent fluxes were carried out using eddy-covariance (EC) towers. However, the distribution of EC towers is sparse due to relatively high cost and practical difficulties in logistics and deployment. As a result, data is temporally and spatially limited and is inadequate to be used for researches at large scales, such as regional and global climate modeling. Besides field measurements, an alternative way is to estimate turbulent fluxes based on the intrinsic relations between surface energy budget components, largely through thermodynamic equilibrium. These relations, referred as relative efficiency, have been included in several models to estimate the magnitude of turbulent fluxes in surface energy budgets such as latent heat and sensible heat. In this study, three theoretical models based on the lumped heat transfer model, the linear stability analysis and the maximum entropy principle respectively, were investigated. Model predictions of relative efficiencies were compared with turbulent flux data over different land covers, viz. lake, grassland and suburban surfaces. Similar results were observed over lake and suburban surface but significant deviation is found over vegetation surface. The relative efficiency of outgoing longwave radiation is found to be orders of magnitude deviated from theoretic predictions. Meanwhile, results show that energy partitioning process is influenced by the surface water availability to a great extent. The study provides insight into what property is determining energy partitioning process over different land covers and gives suggestion for future models. / Dissertation/Thesis / M.S. Civil and Environmental Engineering 2012
197

Relative Performance Evaluation and the Use of Discretionary Bonuses in Executive Compensation

January 2013 (has links)
abstract: In this study, I examine the extent to which firms rely on relative performance evaluation (RPE) when setting executive compensation. In particular, I examine whether firms use information about peer performance to determine compensation at the end of the year, i.e. after both firm and peer performance are observed. I find that RPE is most pronounced for firms that allow little or no scope for ex post subjective adjustments to annual bonuses. Conversely, firms that rely mainly on subjectivity in determining bonus exhibit little use of RPE. These findings suggest that information about peer performance is not used at the end of the year. Instead, peer performance seems to be incorporated in performance targets at the beginning of the year, at least among firms primarily using objective performance measurements. In addition, I provide new evidence on the determinants of the use of subjectivity. / Dissertation/Thesis / Ph.D. Accountancy 2013
198

Relative vs. Absolute Stability in Self-Control: A Meta-Analysis

January 2013 (has links)
abstract: ABSTRACT Research on self-control theory (Gottfredson & Hirschi, 1990) consistently supports its' central proposition that low self-control significantly affects crime. The theory includes other predictions, which have received far less empirical scrutiny. Among these is the argument that self-control is developed early in childhood and that individual differences then persist over time. Gottfredson and Hirschi contend that once established by age ten, self-control remains relatively stable over one's life-course (stability postulate). To determine the empirical status of Gottfredson and Hirschi's "stability postulate," a meta-analysis on existing empirical studies was conducted. Results for this study support the contentions made by Gottfredson and Hirschi, however the inclusion of various moderating variables significantly influenced this relationship. Keywords: self-control, self-control stability, absolute stability, relative stability / Dissertation/Thesis / Appendix / M.S. Criminology and Criminal Justice 2013
199

Padrões eletrostaticos em uma superficie de silica : um modelo para o acumulo de cargas eletricas em isolantes / Electrostatic patterning of a silica surface: a new model for charge build-up on a dielectric solid

Gouveia, Rubia Figueredo 26 July 2005 (has links)
Orientador: Fernando Galembeck / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica / Made available in DSpace on 2018-08-05T15:23:30Z (GMT). No. of bitstreams: 1 Gouveia_RubiaFigueredo_M.pdf: 1322724 bytes, checksum: 354ae5145ed6ce8d69bae986b50bda01 (MD5) Previous issue date: 2005 / Resumo: Atualmente muitas tecnologias importantes são baseadas nos princípios eletrostáticos, como por exemplo, a pintura eletrostática, a reciclagem de termoplásticos e a eletrofotografia. No entanto, mesmo considerando todo o desenvolvimento da eletrostática, ainda existem muitas questões importantes não respondidas, quando se considera a eletrização de materiais isolantes. Na maioria dos casos não se conhece quais são as espécies portadoras de cargas, nem como elas podem ser detectadas e identificadas. Trabalhos anteriores deste laboratório mostraram que os portadores de cargas em látexes são íons simples (K, RSO4, etc). Neste trabalho foram estudados os padrões eletrostáticos criados em uma superfície de sílica, recoberta por um conjunto de eletrodos interdigitados de ouro. As amostras foram preparadas utilizando técnicas microlitográficas e sua superfície foi investigada usando as microscopias de força atômica (AFM) e de varredura de potencial elétrico (SEPM). Foram obtidos padrões eletrostáticos reprodutíveis; a aplicação de uma diferença de potencial elétrico entre os eletrodos produz padrões de potenciais elétricos que desaparecem rapidamente quando os eletrodos são curto-circuitados e aterrados. O tempo de relaxação desses padrões foi de aproximadamente 10 minutos sob umidade de 70% e eles são fortemente influenciados pela umidade relativa da atmosfera, apresentando um tempo de decaimento superior a 1 hora, quando a superfície é exposta a uma umidade relativa de 10%. Os resultados são interpretados usando um modelo simples baseado na quimisorção de espécies presentes na atmosfera acompanhada de reações eletródicas, podendo ser aplicado a outros isolantes. / Abstract: Many current important technologies are based on electrostatic principles, as for instance electrostatic painting, polymer recycling and photocopying. However, even considering its long history, there are still many open questions in the study of electric phenomena in insulators. For instance, how can charge carriers in insulators be detected, identified and quantified? In this laboratory the examination of latexes showed that the charge carriers are K e RSO4 ions. This work describes reproducible electric potential patterns created on silica surfaces, covered with sets of interdigitated parallel gold electrodes by using microlithography techniques. The patterns are detected by concurrent atomic force microscopy (AFM) and scanning electric potential microscopy (SEPM). The images were acquired while electrodes were biased and also after they were all short-circuited and grounded, producing reproducible electrostatic patterns. Characteristic times for pattern formation and relaxation are in the order of 10 minutes at 70% relative humidity and they are strongly influenced by the relative humidity of the atmosphere, showing a relaxation time in the order of 1 hour, when the surface is under 10% RH. The results are interpreted using a model based on the chemisorption of atmospheric water and electrochemical activity at the silica surface. The sum up, this work describes a new approach to the study of the electrification of insulator surfaces that produces reproducible results and can be applied to many other cases. / Mestrado / Físico-Química / Mestre em Química
200

Orações relativas livres do PB : sintaxe, semântica e diacronia / Brazilian Portuguese free relative clauses : syntax, semantics and diachronic issues

Medeiros Junior, Paulo, 1972- 26 August 2018 (has links)
Orientador: Mary Aizawa Kato / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem / Made available in DSpace on 2018-08-26T09:52:55Z (GMT). No. of bitstreams: 1 MedeirosJunior_Paulo_D.pdf: 1794629 bytes, checksum: f52cea3c69b8c0f5d4faa3e344140a04 (MD5) Previous issue date: 2014 / Resumo: Esta tese analisa o fenômeno das orações relativas livres em português do Brasil, debatendo, à luz da teoria de Princípios e Parâmetros, em sua versão conhecida como Programa Minimalista, (tal como proposto em Chomsky (1995) e trabalhos subsequentes), questões referentes à sintaxe, semântica e à evolução da estrutura desse tipo de sentença na história do PB. A análise dos dados mostrou que relativas livres em PB são construções do tipo DP em posição argumental e PP em posição não-argumental, derivadas via movimento de sintagma-Wh e são, nessa língua, sujeitas 100% ao chamado efeito de compatibilidade (Matching effect). Entende-se que a derivação de relativas livres envolva uma operação complexa de incorporação de núcleos funcionais (C0 e D0 diretamente implicados no processo de relativização) ¿ tal como proposto em Medeiros Junior 2005 ¿, a qual se reflete na morfologia do sintagma-Wh que integra esse tipo de construção. Tal operação de confluência de núcleos funcionais está, nos termos do que aqui se propõe, diretamente relacionada à presença de um sufixo -ever nulo que, adentrando a numeração da sentença, não pode ficar "desgarrado" (cf. Lasnik 1995). Com base em análise translinguística quanto ao comportamento das relativas livres com -ever em línguas como o inglês, o basco, o persa, o norueguês e o árabe moderno, e considerando que algumas restrições sintáticas encontradas nessas línguas são também verificados no PB, o que se propõe-se aqui é que toda relativa livre do português seja um relativa livre do tipo wh-ever, com um sufixo nulo. Entende-se que esse fato esteja diretamente ligado à interpretação essencialmente maximalizante/universal para relativas livres do PB, considerando a possibilidade de se associar o composto quer que ao wh dessas estruturas. Toma-se como análise alternativa a esta a hipótese aventada em Ott (2011), constituída com base no panorama de Fases do Programa Minimalista, segundo a qual o fato de relativas livres em sua derivação apresentarem, em dado momento, a estrutura de um CP e a forma final DP se deve ao fato de que o DP wh adjungido a CP se projete na estrutura, resultando na constituição final dessas sentenças. A análise histórica, baseada na teoria de pistas sintáticas de David Lightfoot, revelou que, no português clássico, relativas livres apresentam-se com duas estruturas básicas, uma que chamamos relativa semilivre, com uma preposição intervindo entre o determinante "o" e o relativizador "que", e outra em que o que e quem alternam-se livremente. Em face da redução da ocorrência da preposição interveniente, um processo de reanálise faz novas gerações de falantes convergirem massivamente para a segunda estrutura em detrimento da primeira, o que também se propõe alternativamente, pelas características da mudança, se tratar de um processo de gramaticalização nos termos de Roberts e Roussou (2003) / Abstract: This thesis concerns the phenomenon of the Free Relatives (FR) in Brazilian Portuguese (BP), discussing ¿ throughout the Principles and Parameters theory in its version known as the Minimalist Program (as set by Chomsky (1995) and following works) ¿ issues on the derivation of the syntactic structure, the semantics and historical evolution of this kind of sentence in BP. Analyzed data revealed that Brazilian Portuguese FR must be understood as DP structures in argument position and PPs in A' positions, derived via Wh-movement along with the fact that in BP those sentences are a hundred percent subject to the so called matching effect, supposed to affect FRs in general. The derivation of a FR is supposed to involve a complex head incorporation process (just as proposed by Medeiros Junior2005) throughout which the C0 and the D0 heads strictly implicated in relativization constitute one single head, as a reflex of the morphology of the wh-expression integrating these structures. This head incorporation process is said to be straightly related to the presence of a null suffix of the type -ever, which ¿ entering the derivation ¿ could not be unconnected (stray in Lasnik¿s (1995) terms). Based on a cross linguistic analysis of the behavior of FRs with -ever in languages as Basque, English, Norwegian, and Modern Arabic, and considering the fact that some of the syntactic restrictions observed in those languages are also found in Brazilian Portuguese, I propose here that every FR in BP is understood as a WH-ever FR with a null suffix. This is supposed to be directly connected to the necessity of interpreting the wh-phrase in a FR as a maximalizing element (with a preferential universal reading). An alternative analysis for the present one is found out in Ott (2011), which ¿ based on the Phase Program in Minimalist perspectives ¿ proposes that throughout its derivation, a FR show up in some moment a CP structure and reach the final form of a DP, and this is due to the fact that the adjoined wh-DP projects itself in the structure (instead of the host). The diachronic analysis, based on David Lightfoot¿s syntactic cues theory, showed that in Classic Portuguese FRs exhibited two basic structures: one called Semi-free Relative, containing mostly an intervening preposition between the determiner "o" and the relativizer "que", and another one in which o que and quem alternate freely. In face of the reduction of the intervening preposition, a reanalysis process conducted new generations to converge massively to the second structure, despite the first. Considering the characteristics of the syntactic change, one could also propose a process of grammaticalization in the terms of Roberts & Roussou (2003) / Doutorado / Linguistica / Doutor em Linguística

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