933 resultados para Syntactic foams


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A aquisição e o desenvolvimento da linguagem são primordiais na vida de uma criança, especialmente porque a linguagem possibilita a comunicação com o mundo, sendo um dos principais meios de integração social. Por isso é de grande importância que se assegure que as crianças tenham um bom desenvolvimento da linguagem e, quando necessário, uma boa intervenção em suas dificuldades. Atualmente, em linguagem infantil no Brasil, discute-se diferentes abordagens terapêuticas, mas se verifica a necessidade da elaboração de programas terapêuticos estruturados, confeccionados com qualidade técnica e cientifica que, estimulem as diversas habilidades de linguagem, de forma a considerar as especificidades de cada criança, a fim de minimizar as dificuldades na comunicação destas. Programas de intervenção deste tipo norteariam os fonoaudiólogos a planejarem suas terapias e proporcionaria maior eficácia no processo terapêutico. O objetivo principal deste trabalho foi elaborar, e testar a aplicabilidade de um programa de estimulação de linguagem oral para crianças com atraso de linguagem, na faixa-etária de 3 a 6 anos. Para isso, após a elaboração do programa de estimulação, o mesmo foi julgado por dois juízes, fonoaudiólogos mestres em Linguagem com experiência em Intervenção em Linguagem Infantil, quanto: (a) coerência das estratégias propostas com relação a meta de estimulação; e, (b) com relação ao nível de dificuldade de tais estratégias para o perfil das crianças. Em seguida o programa foi aplicado em 10 crianças com atraso de linguagem sem outros comprometimentos (sensoriais e/ou neurológicos), este programa foi composto de 20 sessões terapêuticas, realizadas com frequência de três vezes por semana, durando em média 60 minutos. As crianças realizaram uma pré-testagem e foram submetidas ao programa de estimulação proposto, ao termino foi realizada uma pós-testagem. Nesta avaliação pré e pós-estimulação, foram avaliados a organização fonológica, vocabulário receptivo e expressivo, habilidades pragmáticas e habilidades psicolinguísticas da criança. O programa foi julgado como adequado pelos juízes e as crianças submetidas à ele tiveram desempenho de acordo com esperado durante as sessões de estimulação. Observou-se também melhora estatisticamente significante (p<0,05) na pós-testagem na Linguagem Global, Linguagem Receptiva, Linguagem Expressiva, Vocabulário Expressivo, Memória de trabalho fonológica e habilidades comunicativas verbais. Conclui-se que o programa atingiu seus objetivos, sendo que o mesmo pode vir a nortear e aprimorar a estimulação fonoaudiológica nos casos de alterações em linguagem infantil, enfatizando a estimulação dos níveis fonético-fonológico, sintático, semântico-lexical e pragmático da linguagem e habilidades psicolinguisticas.

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There is a growing concern about the poor quality of the writing of children and teenagers because of the continuous and constant exposure to the new technologies. Increasingly parents complain that their children spend too much time with their phones, tablets, computers, video games, etc. There is also an increase in the number of teachers who complain about their students’ writing skills. Some of the most prominent criticisms are loss of vocabulary, simplified syntax and the poor spelling of the compositions. To verify if these criticisms are motivated or not by the use of information and communication technologies (ICT) is what moved us to initiate this doctoral dissertation entitled “The influence of ICT on ratings of syntactic maturity: a comparative study between pre- and post-internet generations”. We aim to know if a daily and constant exposure to the ICT can affect the syntactic maturity rates of children and teenagers. We also want to find out if there are differences between the levels of syntactic maturity of today’s students and those of the 1990s, when there were no ICT and internet. In order to do this, we have carried out a quantitative analysis taking as a reference previous studies by generativist researchers in the Anglo-Saxon and Hispanic world and we have used the same units of measure (T-unit and clause). We collected a corpus of 382 essays, half argumentative and half descriptive, from 191 individuals. We have analyzed them according to ten dependent variables or syntactic maturity rates and other independent variables (Hours in internet, Course, Sex, Location, Type of school) by applying techniques of descriptive and inferential statistics...

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Nesse estudo, procurou-se investigar a influência do aumento de carga orgânica em um ASBR operado a 30ºC, agitado mecanicamente e contendo microrganismos imobilizados em suporte inerte. Para tal, foi aplicado um carregamento orgânico volumétrico variando de 1,5 a 6,0 g DQO/L.dia, alimentando-se um reator construído em acrílico (5,4 L) com 2 L de água residuária sintética com concentrações de 500 a 2000 mg DQO/L com fontes de carboidrato/proteína/lipídio, em bateladas de 8 a 12 h. O sistema apresentou eficiências de remoção de material orgânico entre 73% e 88% para as condições estudadas. Entretanto, quando o reator foi alimentado com uma concentração de 2000 mg DQO/L em bateladas de 8 h, verificou-se o acúmulo de ácidos voláteis totais, refletindo na redução da eficiência de remoção de material orgânico para 55%, para amostras filtradas. Os perfis dinâmicos ao longo da batelada permitiram concluir que, para a condição com o mesmo carregamento orgânico, porém com concentrações afluentes e tempos de ciclo diferentes, a produção inicial de ácidos voláteis totais foi mais acentuada para o caso de alimentação com maior concentração. Para condições com concentrações afluentes iguais, o tempo a mais para o ciclo foi fundamental para obter-se efluente de melhor qualidade em termos de remoção de matéria orgânica.

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In this paper we present a whole Natural Language Processing (NLP) system for Spanish. The core of this system is the parser, which uses the grammatical formalism Lexical-Functional Grammars (LFG). Another important component of this system is the anaphora resolution module. To solve the anaphora, this module contains a method based on linguistic information (lexical, morphological, syntactic and semantic), structural information (anaphoric accessibility space in which the anaphor obtains the antecedent) and statistical information. This method is based on constraints and preferences and solves pronouns and definite descriptions. Moreover, this system fits dialogue and non-dialogue discourse features. The anaphora resolution module uses several resources, such as a lexical database (Spanish WordNet) to provide semantic information and a POS tagger providing the part of speech for each word and its root to make this resolution process easier.

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In this paper, the new features that IR-n system applies on the topic processing for CL-SR are described. This set of features are based on applying logic forms to topics with the aim of incrementing the weight of topic terms according to a set of syntactic rules.

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This paper describes a CL-SR system that employs two different techniques: the first one is based on NLP rules that consist on applying logic forms to the topic processing while the second one basically consists on applying the IR-n statistical search engine to the spoken document collection. The application of logic forms to the topics allows to increase the weight of topic terms according to a set of syntactic rules. Thus, the weights of the topic terms are used by IR-n system in the information retrieval process.

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El espacio doméstico construido es un producto social que a su vez crea sociedad. La casa constituye un escenario privilegiado, un medio de expresión y transmisión de conductas y comportamientos. No obstante, resulta muy difícil comprender el espacio social a través de unas ruinas arqueológicas vacías y carentes de tercera dimensión, y se corre el riesgo de proyectar una imagen historiográfica previamente construida sobre las sociedades estudiadas. La comprensión del espacio social requiere formalizar y discutir los patrones formales de las estructuras domésticas y sus formas de agrupación. Este trabajo aborda el estudio de los espacios domésticos desde una perspectiva lingüística (una gramática de la casa), distinguiendo los elementos en sí y sus combinaciones. Se definen tres niveles distintos de análisis del hecho doméstico: el morfológico, que se ocupa de la forma de las unidades domésticas y de las transformaciones que experimentan; el sintáctico que enfatiza las relaciones entre las estructuras elementales en el marco de una estructura espacial organizada; y el semiótico, que las analiza como expresiones sociales, materialización e instrumento de significados culturales. De acuerdo a esta perspectiva se propone una reflexión metodológica sobre la caracterización de los espacios domésticos medievales e islámicos en la Península Ibérica; se plantean los problemas derivados del uso social del espacio, los modelos domésticos y su diacronía, y se discute acerca de la casa como indicador material de islamización.

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El objetivo del trabajo consiste en reutilizar el Treebank de dependencias EPECDEP (BDT) para construir el gold standard de la sintaxis superficial del euskera. El paso básico consiste en el estudio comparativo de los dos formalismos aplicados sobre el mismo corpus: el formalismo de la Gramática de Restricciones (Constraint Grammar, CG) y la Gramática de Dependencias (Dependency Grammar, DP). Como resultado de dicho estudio hemos establecido los criterios lingüísticos necesarios para derivar la funciones sintácticas en estilo CG. Dichos criterios han sido implementados y evaluados, así en el 75% de los casos se derivan automáticamente las funciones sintácticas para construir el gold standard.

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This paper describes the automatic process of building a dependency annotated corpus based on Ancora constituent structures. The Ancora corpus already has a dependency structure information layer, but the new annotated data applies a purely syntactic orientation and offers in this way a new resource to the linguistic research community. The paper details the process of reannotating the corpus, the linguistic criteria used and the obtained results.

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The English language and the Internet, both separately and taken together, are nowadays well-acknowledged as powerful forces which influence and affect the lexico-grammatical characteristics of other languages world-wide. In fact, many authors like Crystal (2004) have pointed out the emergence of the so-called Netspeak, that is, the language used in the Net or World Wide Web; as Crystal himself (2004: 19) puts it, ‘a type of language displaying features that are unique to the Internet […] arising out of its character as a medium which is electronic, global and interactive’. This ‘language’, however, may be differently understood: either as an adaptation of the English language proper to internet requirements and purposes, or as a new and rapidly-changing and developing language as a result of a rapid evolution or adaptation to Internet requirements of almost all world languages, for whom English is a trendsetter. If the second and probably most plausible interpretation is adopted, there are three salient features of ‘Netspeak’: (a) the rapid expansion of all its new linguistic developments thanks to the Internet itself, which may lead to the generalization and widespread acceptance of new words, coinages, or meanings, hundreds of times faster than was the case with the printed media. As said above, (b) the visible influence of English, the most prevalent language on the Internet. Consequently, (c) this new language tends to reduce the ‘distance’ between English and other languages as well as the ignorance of the former by speakers of other languages, since the ‘Netspeak’ version of the latter adopts grammatical, syntactic and lexical features of English. Thus, linguistic differences may even disappear when code-switching and/or borrowing occurs, as whole fragments of English appear in other language contexts. As a consequence of the new situation, an ideal context appears for interlanguage or multilingual word formation to thrive: puns, blends, compounds and word creativity in general find in the web the ideal place to gain rapid acceptance world-wide, as a result of fashion, coincidence, or sheer merit of the new linguistic proposals.

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It is well known that sound absorption and sound transmission properties of open porous materials are highly dependent on their airflow resistance values. Low values of airflow resistance indicate little resistance for air streaming through the porous material and high values are a sign that most of the pores inside the material are closed. The laboratory procedures for measuring airflow resistance have been stan- dardized by several organizations, including ISO and ASTM for both alternate flow and continuous flow. However, practical implementation of these standardized methods could be both complex and expensive. In this work, two indirect alternative measurement procedures were compared against the alternate flow standardized technique. The techniques were tested using three families of eco-friendly sound absorbent materials: recycled polyurethane foams, coconut natural fibres, and recycled polyester fibres. It is found that the values of airflow resistance measured using both alternative methods are very similar. There is also a good correlation between the values obtained through alternative and standardized methods.

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The great amount of text produced every day in the Web turned it as one of the main sources for obtaining linguistic corpora, that are further analyzed with Natural Language Processing techniques. On a global scale, languages such as Portuguese - official in 9 countries - appear on the Web in several varieties, with lexical, morphological and syntactic (among others) differences. Besides, a unified spelling system for Portuguese has been recently approved, and its implementation process has already started in some countries. However, it will last several years, so different varieties and spelling systems coexist. Since PoS-taggers for Portuguese are specifically built for a particular variety, this work analyzes different training corpora and lexica combinations aimed at building a model with high-precision annotation in several varieties and spelling systems of this language. Moreover, this paper presents different dictionaries of the new orthography (Spelling Agreement) as well as a new freely available testing corpus, containing different varieties and textual typologies.

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One of the main challenges to be addressed in text summarization concerns the detection of redundant information. This paper presents a detailed analysis of three methods for achieving such goal. The proposed methods rely on different levels of language analysis: lexical, syntactic and semantic. Moreover, they are also analyzed for detecting relevance in texts. The results show that semantic-based methods are able to detect up to 90% of redundancy, compared to only the 19% of lexical-based ones. This is also reflected in the quality of the generated summaries, obtaining better summaries when employing syntactic- or semantic-based approaches to remove redundancy.

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Este artículo analiza el video oficial de la campaña del Presidente Correa denominado “spot bicicleta”, elemento promocional usado en las elecciones seccionales del 2013, toma como referencia de análisis las estructuras fonológicas, gráficas, sintácticas y semánticas. La pieza con una duración de 3:30 minutos, recuerda el proceso de “Revolución Ciudadana”, emprendido por el partido Alianza País (35); y resalta la condición de servicio del Presidente, cuyo eje principal es la Patria. El discurso gira entorno a la pobreza, la esperanza y el deseo del Presidente de continuar en el poder. Toda la pieza audiovisual está matizada con elementos posicionados en la mente de los ecuatorianos, usados como una estrategia de persuasión.

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Implant failures and postoperative complications are often associated to the bone drilling. Estimation and control of drilling parameters are critical to prevent mechanical damage to the bone tissues. For better performance of the drilling procedures, it is essential to understand the mechanical behaviour of bones that leads to their failures and consequently to improve the cutting conditions. This paper investigates the effect of drill speed and feed-rate on mechanical damage during drilling of solid rigid foam materials, with similar mechanical properties to the human bone. Experimental tests were conducted on biomechanical blocks instrumented with strain gauges to assess the drill speed and feed-rate influence. A three-dimensional dynamic finite element model to predict the bone stresses, as a function of drilling conditions, drill geometry and bone model, was developed. These simulations incorporate the dynamic characteristics involved in the drilling process. The element removal scheme is taken into account and allows advanced simulations of tool penetration and material removal. Experimental and numerical results show that generated stresses in the material tend to increase with tool penetration. Higher drill speed leads to an increase of von-Mises stresses and strains in the solid rigid foams. However, when the feed-rate is higher, the stresses and strains are lower. The numerical normal stresses and strains are found to be in good agreement with experimental results. The models could be an accurate analysis tool to simulate the stresses distribution in the bone during the drilling process.