[pt] O objetivo deste trabalho é apresentar subsídios para a elaboração automática, a partir de corpus, de ontologias específicas quanto ao domínio. Para tanto, assumo que determinadas relações semânticas, como a hiperonímia, podem estar sistematicamente expressas em textos por meio de determinados padrões léxico-sintáticos. Tomando como ponto de partida alguns desses padrões, descritos originalmente em Hearst (1992, 1998), (i) identifico novos padrões para a expressão da relação de hiperonímia; (ii) adapto e refino três padrões já existentes (Hearst, 1992), tendo em vista especificidades da língua portuguesa; (iii) faço um cruzamento entre as informações extraídas com os padrões, a fim de gerar inferências. A perspectiva teórica subjacente é inspirada por reflexões wittgensteinianas sobre o significado, e se mostrou produtiva na medida em que legitima os dados vindos do corpus e as relações de significado que nele aparecem. O modelo de ontologia proposto caracteriza-se principalmente por: (i) não conter categorias pré-definidas, já que categorias são construtos humanos, abstrações que refletem uma perspectiva particular do mundo. A idéia de sustentar a ontologia em corpus busca deslocar o espaço de discussão sobre quais seriam as categorias relevantes de um domínio: as categorias que emergem do corpus refletiriam o conhecimento implícito do domínio em questão; (ii) não conter definições criadas a priori, sendo o significado de cada item decorrente das relações entre as palavras. A metodologia - extração das relações por meio de regras e posterior cruzamento para a realização de inferências - foi aplicada em um corpus do domínio saúde e um corpus genérico. Os resultados positivos indicam que sua utilização pode ser uma importante aliada na elaboração de ontologias e, também, uma ferramenta de auxílio a lexicógrafos e a sistemas de classificação semântica de nomes próprios. Em termos gerais, a metodologia apresenta como principais vantagens (i) a facilidade na automação do processo, minimizando a intervenção humana; (ii) facilidade na categorização de domínios especializados; (iii) maior dinamicidade, pois o fato de o corpus poder ser constantemente atualizado faz com que esteja menos sujeito a falhas. / [en] The main goal of this work is to present an automated method for building domain-specific corpus-based ontologies. The assumption is that semantic relationships, such as hypernym, can be systematically expressed through lexicalsyntactic patterns. Starting with some of these patterns, originally described in Hearst (1992), I (i) identify new patterns that express hypernym; (ii) adapt three other patterns (Hearst, 1992), considering specificities of the Portuguese language; and (iii) intersect these results, in order to produce inferences. The theoretical approach is inspired by the wittgensteinian ideas about meaning. The resulting ontology´s most prominent features are: (i) the fact that it does not have a priori categories, since categories are human constructs, abstractions that reflect a particular world view. Instead of discussing what should be the main categories in a domain, sustaining the ontology on corpora assumes that the corpus reflects the implicit knowledge of a given domain; and (ii) the fact that it does not have a priori definitions: the meaning of a word is derived from its relations with other words. The method - automatic extraction of semantic relations through rules, and the intersection of this information in order to produce inferences - was applied to two corpora: a health domain corpus and a generic corpus. The positive results show that the method can be very useful in ontology building and it can also be a valuable tool for lexicographers and named entity recognition systems. The main advantages of the method are (i) the simplicity of automating the process of ontology building; (ii) the ease of categorizing specialized domains, and (iii) its dynamicity, since the possibility of constantly updating the corpus makes it less subject to errors.

A presente dissertação parte da hipótese de que, por meio da análise do movimento entre o falar e o grafar, é possível entender os modos pelos quais a criança constrói o conceito do nome próprio. Ou seja, ela privilegia o estudo do momento no qual, para cada um dos informantes, o nome próprio deixou de ser uma imagem e passou a funcionar como um símbolo. A pesquisa teve por objetivo geral compreender como a simbolização do conceito de nome próprio se dá. Tomou como objeto de análise a produção de crianças em idade aproximada de três anos, alunos de uma escola pública de educação infantil de zero a três anos, no interior do Estado de São Paulo. Ao longo do ano de 2009, os informantes foram gravados em vídeo, com periodicidade mensal. As imagens foram tomadas durante a realização de uma atividade de escrita do nome próprio. A atividade teve por objetivo tanto registrar o ato da escrita do nome próprio pela criança quanto a fala produzida por ela durante a escrita. Assim, o corpus foi formado por gravações em vídeo, transcrições simples das falas nele contidas e pelas produções escritas de quatro crianças. Partindo da abordagem lacaniana, que considera o nome próprio como um traço que marca um corpo e, designando uma diferença, o inscreve em um lugar, a pesquisa procurou responder de que modo as crianças pequenas interpretam as marcas gráficas que produzem, de modo intencional ou acidental, ao serem solicitadas para escrever seu nome próprio. Na análise dos dados, buscou-se privilegiar os indícios das passagens que mostram a alternância entre os registros do psiquismo humano descritos por Lacan (real, simbólico e imaginário). Cotejando as produções das crianças, foi possível concluir que houve movimentos no e do escrito, tanto entre uma produção e outra quanto na elaboração de cada uma das produções. É possível afirmar que, aos poucos, os informantes atualizaram, no ato de escrever, seu assujeitamento às leis da linguagem e, por este motivo, puderam percorrer um caminho para se apropriar do sistema de representação escrita. Postulamos, portanto, que os traços e os riscos produzidos funcionam como significantes que interrogam a criança e a instigam a fazer reflexões a respeito da escrita. Nesse processo, a professora fez intervenções que potencializaram a reflexão a respeito da escrita e, assim, pôde sustentar o trabalho de reformulação das hipóteses a respeito da escrita como objeto do conhecimento. Com relação às alterações na relação dos informantes com o saber gerados pelo processo, pode-se dizer que eles passaram a buscar maneiras de se representar por meio de uma marca própria e singular. Concluímos, portanto, que o investimento necessário para realizar uma leitura mais atenta da escrita de crianças pequenas é válido, pois, potencialmente, pode proporcionar elementos para compreender os impasses na alfabetização dos mais velhos. / This work assumes that, through the analysis of the movement between speaking and writing, it is possible to understand the means by which the child builds the concept of proper name. In other words, it favors the study of the moment in which, to every one of the informers, the proper name was no longer an image and started operating as a symbol. The overall aim of this research was to comprehend how the concept of proper name symbolization occurs. The object of analysis was the written production of children around the age of three who are students at a nursery school in the countryside of São Paulo. During 2009, the informers were monthly recorded. The images were taken during a written activity in which the students were expected to write their own names. The aim of this activity was not only registering the act when the child writes her own name but also the speech produced while writing. Thus, the corpus was composed for video recording, simple transcriptions of the speeches recorded and four childrens written productions. We first consider Lacans approach, which considers the proper name a feature that creates a sign in a body and, as it designates a difference, signs it up in a determined place. Thus, this research aimed to answer how young children interpret the graphic marks produced by them, deliberately or accidentally, when they are asked to write their proper names. By the datas analysis, we intended to privilege the clues of the episodes that show the alternation between the human psychism registers described by Lacan (Real, Symbolic and Imaginary). By confronting the childrens productions, it was possible to conclude that there were movements in and from the written composition. It is possible to state that, little by little, the informers got up to date, when writing, their antipersonification to the language rules and, for this reason, they could cover a way in order to appropriate the written representation system. We assume, therefore, that the traces and lines produced work as significants that interrogate the child and instigate her to reflect on the written text. During this process, the teacher intervened, improving the reflection on the written text and supporting the hypotheses recast on writing as a knowledge object. In relation to the modifications in the relationship between the informers and the knowledge generated from the process, we could say that they started looking for ways to represent themselves through a singular and proper sign. We concluded, therefore, that the necessary investment in order to read more carefully young childrens productions is valuable, because it may give elements that will help comprehending the difficulties in teaching the older children how to read and write.

A proper name is a vocabulary element of a particular language which also belongs to a respective onymic subsystem, thereby acquiring a binary character. Proper names are formed (as a secondary plan of a language) with the background of appellative vocabulary. However, in their formation and use in communication, not only are the rules of the appellative language code applied but also the rules specific to proper names. Two opposing but interrelated tendencies are typical of the position of proper names – a continuous interaction of proper names with other vocabulary and the whole language system and, simultaneously, a continuous polarisation of the category of proper names in relation to appellatives. The interaction of proper names with other vocabulary relates to the ongoing processes of onymisation (appellative % proprium) and apellativisation (proprium % appellative) with the openness of onymy (the social, historical, cultural as well as the political dimensions of proper names present a wide range of possibilities for, e. g. the adoption of exonyms) but, above all, it relates to the social needs of ordinary communication. The polarisation of proper names in relation to appellatives is, hence, conditioned by the special character of onymic nomination. From this binary interrelationship of proper names follows the binary status of the category nomen proprium, i. e. linguistic status and onomastic status. In the analysis of proper names and from the methodological standpoint in onomastics, I consider this to be fundamental. That is why, after the older characterisation of onomastics, I have extended the definition of the linguistic status of proper names as defined by Kuryłowicz (La position linguistique du nom propre, 1956) to linguistic and onomastic status (Blanár 1976, 1977 ). These terms will be discussed later.

Made available in DSpace on 2016-04-28T20:19:25Z (GMT). No. of bitstreams: 1 2007 - Clayton do Espirito Santo.pdf: 584120 bytes, checksum: 561e1209173d3bb2ed8d913921d12c58 (MD5) Previous issue date: 2007-06-29 / The general objective in this dissertation consists of analyzing the Foreign Direct Investment in the hypermarket chain in Brazil, emphasizing the products of proper mark as differentiation strategy front to the competition. Recently the retail sector comes growing of accented form, stimulated mainly for the strategies of growth adopted by the great hypermarket chain. Beyond investing in technology, expansion of store and internal growth, the great nets follow investing of significant form in the products of Proper Mark (MP). In this segment of products the leader of market CBD/P?o de A??car follows launching new itens of launched currently commercialization and already it possesses more than 14 thousand itens. To verify which the perception of the consumers in relation to the products of MP and which the determinative factors in the choice of the purchase place, a research was accomplished in Volta Redonda city with 187 customers of the Sendas, supermarket that belongs the CBD/P?o de A??car since 2003. It could be concluded there are two distinct strategies in the positioning of the MP products, it can be offered the product as strategy of customer loyalty, in view of that the main consumers of these products are pertaining people to the social class A and B, or can be grow up popularization strategies to increase the willing number of consumers to acquire these products, because the lowest social class still see them with distrust. / O objetivo geral nesta disserta??o consiste em analisar o Investimento Direto Estrangeiro nas redes supermercadistas no Brasil, enfatizando os produtos de marca pr?pria como estrat?gia de diferencia??o frente ? concorr?ncia. Nos ?ltimos anos o setor varejista vem crescendo de forma acentuada, impulsionado principalmente pelas estrat?gias de crescimento adotadas pelas grandes redes supermercadistas. Al?m de investir em tecnologia, expans?o de lojas e crescimento interno, as grandes redes seguem investindo de forma significativa nos produtos de Marca Pr?pria (MP). Neste segmento de produtos a l?der de mercado Companhia Brasileira de Distribui??o/ P?o de A??car segue lan?ando novos itens de comercializa??o e j? possui atualmente mais de 14 mil itens lan?ados. Para verificar qual a percep??o dos consumidores em rela??o aos produtos de MP e quais os fatores determinantes na escolha do local de compra, foi realizada uma pesquisa na cidade de Volta Redonda com 187 clientes do Sendas, supermercado que pertence a CBD/P?o de A??car desde 2003. Conclui-se que existem duas estrat?gias distintas no posicionamento dos produtos de MP, os supermercados podem oferecer o produto como estrat?gia de fideliza??o de clientes, tendo em vista que os principais consumidores destes produtos s?o pessoas pertencentes ?s classes A e B, ou podem criar estrat?gias de divulga??o para aumentar o n?mero de consumidores dispostos a adquirir estes produtos, pois as classes mais baixas ainda os v?em com desconfian?a.

Nous sommes partie d’une réflexion sur l’inscription du nom propre (Npr) en discours et des changements de sens qu’il peut subir. A partir du Npr « Hezbollah », mot-pivot de cette étude, nous avons entamé l’analyse d’un corpus de presse (7 journaux libanais, français et américains) pour une période qui court de janvier 2010 (probable menace de guerre entre Israël et le Hezbollah) à janvier 2011 (la chute du gouvernement libanais). Nous avons privilégié au départ une étude quantitative, en nous appuyant sur la statistique textuelle, afin de mesurer l’importance accordée au Hezbollah en fonction des événements qui jalonnent la période (nombre et longueur des articles). En allant du mot au texte, nous avons ensuite analysé la combinatoire du mot-pivot dans son contexte proche (prédications, caractérisations) puis ses reprises en contexte élargi, afin d’étudier les différences de traitement significatives selon les pays et les lignes éditoriales des journaux. / We chose to reflect on the proper noun and the changes it undergoes in discourse. Using the keyword, “Hezbollah”, we started the analysis of a corpus of newspapers (7 Lebanese, French and American newspapers), from January 2010 (probable threat of war between Israel and Hezbollah) till January 2011 (the fall of the Lebanese government). A quantitative study, based on textual statistics, was a must in an attempt to identify the importance of Hezbollah according to main events during this period of time and the number and length of articles. While shifting from the word to the text, we the analyzed the combinations of “Hezbollah” in its immediate context (predications, adjectives), then its reformulations in the broader context, to highlight the possible differences between countries and editorial lines.

Assessing the impact of inlet flow distortion in turbomachinery is desired early in the design cycle. This thesis introduces and validates the use of methods based on the Proper Orthogonal Decomposition (POD) to analyze clean and 1/rev static pressure distortion simulation results at design and near stall operating condition. The value of POD comes in its ability to efficiently extract both quantitative and qualitative information about dominant spatial flow structures as well as information about temporal fluctuations in flow properties. Observation of the modes allowed qualitative identification of shock waves as well as quantification of their location and range of motion. Modal coefficients revealed the location of the passage shock at a given angular location. Distortion amplification and attenuation between rotors was also identified. A relationship was identified between how distortion manifests itself based on downstream conditions. POD provides an efficient means for extracting the most meaningful information from large CFD simulation data. Static pressure and axial velocity were analyzed to explore the flow physics of 3 rotors of a compressor with a distorted inlet. Based on the results of the analysis of static pressure using the POD modes, it was concluded that there was a decreased range of motion in passage shock oscillation. Analysis of axial velocity POD modes revealed the presence of a separated region on the low pressure surface of the blade which was most dynamic in rotor 1. The thickness of this structure decreased in the near stall operating condition. The general conclusion is made that as the fan approaches stall the apparent effects of distortion are lessened which leads to less variation in the operating condition. This is due to the change in operating condition placing the fan at a different position on the speedline such that distortion effects are less pronounced. POD modes of entropy flux were used to identify three distinct levels of entropy flux in the blade row passage. The separated region was the region with the highest entropy due to the irreversibilities associated with separation.

Three methods were developed to better understand and characterize the near-field dynamic processes of rotary bell atomization. The methods were developed with the goal of possible integration into industry to identify equipment changes through changes in the primary atomization of the bell. The first technique utilized high-speed imaging to capture qualitative ligament breakup and, in combination with a developed image processing technique and PIV software, was able to gain statistical size and velocity information about both ligaments and droplets in the image data. A second technique, using an Nd:YAG laser with an optical filter, was used to capture size statistics at even higher rotational speeds than the first technique, and was utilized to find differences between serrated and unserrated bell ligament and droplet data. The final technique was incorporating proper orthogonal decomposition (POD) into image data of a side-profile view of a damaged and undamaged bell during operation. This was done to capture differences between the data sets to come up with a characterization for identifying if a bell is damaged or not for future industrial integration.

<p>Accurately assessing the risk and growth of rupture among intracranial aneurysms (IA) remains a challenging task for clinicians. Hemodynamic factors are known to play a critical role in the development of IAs, but the specific mechanisms are not well understood. Many studies have sought to correlate specific flow metrics to risk of growth and rupture but have reported conflicting findings. Computational fluid dynamics (CFD) has predominantly been the methodology used to study IA hemodynamics. Yet, CFD assumptions and limitations coupled with the lack of CFD validation has precluded clinical acceptance of IA hemodynamic assessments and likely contributed to the contradictory results among previous studies. Experimental particle image velocimetry (PIV) studies have been noticeably limited in both scope and number among IA studies, in part due to the complexity associated with such experiments. Moreover, the limited understanding of the robustness of hemodynamic metrics across varying flow and measurement environments and the effect of transitional flow in IAs also remain open issues. In this work, techniques to enhance IA PIV capabilities were developed and the first volumetric pulsatile IA PIV study was performed. A novel blood analog solution—a mixture of water, glycerol and urea— was developed and an autonomous methodology for reducing experimental noise in velocity fields was introduced and demonstrated. Both of these experimental techniques can also be used in PIV studies extending beyond IA applications. Further, the onset and development of transitional flow in physiological, pulsatile waveforms was explored. The robustness of hemodynamic metrics such as wall shear stress, oscillatory shear index, and relative residence time across varying modalities, spatiotemporal resolutions, and flow assumptions was explored. Additional hemodynamic metrics which have been demonstrated to be influential in other cardiovascular flows but yet to be tested in IA studies were also identified and considered. Ultimately this work provides a framework for future IA PIV studies as well as insight on using hemodynamic evaluations to assess the risk of growth and rupture of an IA, thereby taking steps towards enhancing the clinical utility of such analysis.</p>

L'organisation de l'information sur un intranet (réseau informatique interne d’une organisation fonctionnant avec les technologies d'Internet) nécessite de nouvelles approches pour traiter la question de l'adéquation entre l’arborescence des sites et les usages linguistiques de leurs publics. Une façon de prendre en compte ces usages consiste à explorer les données textuelles représentatives d'une situation de communication spécifique. Une telle exploration est effectuée à l’aide de techniques textométriques, comme l'index hiérarchique des formes, les concordances, les segments répétés, la carte des sections d’un texte, le calcul des co-occurrences et l'analyse factorielle des correspondances. On extrait alors d’un corpus de textes de communication d’entreprise (rapports d’activité) les unités lexicales destinées à la construction d'un référentiel terminologique d’un type particulier. Afin de prendre en compte le contexte de communication on propose d’utiliser trois sortes de repères : - le référentiel d’objets propre à une organisation, - les propriétés pragmatiques des noms propres, - la collecte d’une partie du vocabulaire caractéristique du corpus utilisé comme source du référentiel terminologique, réalisée à partir d’une sélection de noms propres. Ainsi, cette collecte ne se limite pas aux seules unités terminologiques : elle comprend également des mots relevant de la langue commune et des noms propres. Les unités appartenant au vocabulaire du corpus sont choisies en fonction du type de relations sémantiques établies avec les noms propres dans les discours. Enfin, les résultats obtenus sont évalués en termes de productivité, de fiabilité et de représentativité. / Information organization on an intranet (internal network of an organization, using technologies of Internet) needs new approaches handling the question of the adequacy between the structures of intranet sites and the language use of their visitors. A way to take into account these usages is to explore textual data which are representative of a specific situation of communication. Such an exploration is carried out with textual statistics tools, like hierarchical index, concordance, repeated segment, textual map, co-occurrence and cluster analysis. This corpus-based approach allows us to extract linguistic units belonging, for example, to texts of corporate communication (annual reports). Recognition and storage of such lexical data aim at the construction of a terminological thesaurus of a peculiar type. We suggest taking into account the context of communication by using three sorts of marks : - the particular ontology of an organization such as it is evoked in discourses, - the pragmatic properties of the proper names, - a selection of proper names allows gathering a part of the characteristic vocabulary of the corpus used as source for the terminological thesaurus. This collection does not thus limit itself to the only terminological units, but also contains words of the common language and proper names. Elements belonging to the vocabulary of the corpus are selected according to the type of semantic relations established with the proper names in the texts. Finally, the results are assessed in terms of productivity, reliability and representativeness.

Thesis (M.A. (Communication Studies))--North-West University, Potchefstroom Campus, 2007.