925 resultados para Symbolic computation and algebraic computation


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Esta pesquisa verifica a opinião da criança por meio do desenho sobre o Lar de Longa Permanência para Idosos, antes e depois de contato lúdico com idosos institucionalizados. Para melhor caracterizar a população idosa, traça seu perfil neuropsicológico. Desenvolve-se junto a 21 idosos institucionalizados e 61 crianças com idades entre 7 e 12 anos, do Ensino Fundamental público. Inicia-se por verificar a opinião destas crianças sobre Asilo, por meio de desenho. Em seguida, realiza intervenção lúdica com crianças e idosos, de 10 encontros com brincadeiras simbólicas e jogos de regras. A seguir, reavalia a opinião das crianças e faz avaliação neuropsicológica dos idosos, por meio de Mini-Exame do Estado Mental, da Escala de Depressão Geriátrica, do Short-Form Health Survey (SF-36) e do Índice de Katz. Para verificar a opinião das crianças expressa por meio do desenho, utiliza de um título em aberto “Asilo é...”, a ser completado. Eles são analisados com subsídios do teste projetivo House-Tree-Person (HTP). Os resultados demonstram que houve, de uma aplicação para outra, alteração na opinião de 67% das crianças, que manifestaram opinião mais positiva relativa a perceber os idosos mais interativos e o Asilo mais humanizado, por meio de desenhos mais coloridas, de casas com portas e janelas, de pessoas sorrindo e em movimento e de mensagens afetuosas. Como aspectos negativos, encontram-se maior número de grades e de pessoas desenhadas sem face, o que pode representar a percepção da criança da dificuldade de contato do idoso com o mundo externo. Na análise estatística, encontrou-se média geral de 0,34 e desvio padrão de 0,16, no primeiro desenho e, no segundo, média de 0,42 e desvio padrão de 0,19, com médias obtidas numa escala de 0 a 1, em que se considera positivo o valor próximo a 1. Na avaliação neuropsicológica dos idosos, no MEEM, 50% demonstram preservação cognitiva. Os demais instrumentos indicam que a maior parte deles não apresenta sintomas depressivos, emite opinião positiva com relação à própria saúde, participa das atividades lúdicas e é dependente. Este estudo ressalta contudo que as características da instituição pesquisada, juntamente com a realização de atividades lúdicas, podem ter favorecido a opinião das crianças após seu contato com o Asilo. O estudo indica a necessidade de novas pesquisas sobre interação criança-idoso institucionalizado

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This chapter takes a social theory of practice approach to examining institutional work; that is, how institutions are created, maintained, and disrupted through the actions, interactions, and negotiations of multiple actors. We examine alternative approaches that organizations use to deal with institutional pluralism based on a longitudinal real-time case study of a utility company grappling with opposing market and regulatory logics over time. These two logics required the firm to both mitigate its significant market power and also maintain its commercially competitive focus and responsiveness to shareholders. Institutional theorists have long acknowledged that institutions have a central logic (Friedland & Alford, 1991) or rationality (DiMaggio & Powell, 1983; Scott, 1995/2001; Townley, 2002), comprising a set of material and symbolic practices and organizing principles that provide logics of action for organizations and individuals, who then reproduce the institutions through their actions (Glynn & Lounsbury, 2005; Suddaby & Greenwood, 2005). Despite a monolithic feel to much institutional theory, in which a dominant institutional logic appears to prevail, institutional theorists also acknowledge the plurality of institutions (e.g. Friedland & Alford, 1991; Kraatz & Block, 2008; Lounsbury, 2007; Meyer & Rowan, 1977; Whittington, 1992). While these pluralistic institutions may be interdependent, they are not considered to coexist in harmony; “There is no question but that many competing and inconsistent logics exist in modern society” (Scott, 1995: 130).

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The concept of an Expert System (ES) has been acknowledged as a very useful tool, but few studies have been carried out in its application to the design of cold rolled sections. This study involves primarily the use of an ES as a tool to improve the design process and to capture the draughtsman's knowledge. Its main purpose is to reduce substantially the time taken to produce a section drawing, thereby facilitating a speedy feedback to the customer. In order to communicate with a draughtsman, it is necessary to use sketches, symbolic representations and numerical data. This increases the complexity of programming an ES, as it is necessary to use a combination of languages so that decisions, calculations, graphical drawings and control of the system can be effected. A production system approach is used and a further step has been taken by introducing an Activator which is an autoexecute operation set up by the ES to operate an external program automatically. To speed up the absorption of new knowledge into the knowledge base, a new Learning System has been constructed. In addition to developing the ES, other software has been written to assist the design process. The section properties software has been introduced to improve the speed and consistency of calculating the section properties. A method of selecting or comparing the most appropriate section for a given specification is also implemented. Simple loading facilities have been introduced to guide the designer as to the loading capacity of the section. This research has concluded that the application of an ES is beneficial and with the activator approach, automated designing can be achieved. On average a complex drawing can be displayed on the screen in about 100 seconds, where over 95% of the initial section design time for repetitive or similar profile can be saved.

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Background - When a moving stimulus and a briefly flashed static stimulus are physically aligned in space the static stimulus is perceived as lagging behind the moving stimulus. This vastly replicated phenomenon is known as the Flash-Lag Effect (FLE). For the first time we employed biological motion as the moving stimulus, which is important for two reasons. Firstly, biological motion is processed by visual as well as somatosensory brain areas, which makes it a prime candidate for elucidating the interplay between the two systems with respect to the FLE. Secondly, discussions about the mechanisms of the FLE tend to recur to evolutionary arguments, while most studies employ highly artificial stimuli with constant velocities. Methodology/Principal Finding - Since biological motion is ecologically valid it follows complex patterns with changing velocity. We therefore compared biological to symbolic motion with the same acceleration profile. Our results with 16 observers revealed a qualitatively different pattern for biological compared to symbolic motion and this pattern was predicted by the characteristics of motor resonance: The amount of anticipatory processing of perceived actions based on the induced perspective and agency modulated the FLE. Conclusions/Significance - Our study provides first evidence for an FLE with non-linear motion in general and with biological motion in particular. Our results suggest that predictive coding within the sensorimotor system alone cannot explain the FLE. Our findings are compatible with visual prediction (Nijhawan, 2008) which assumes that extrapolated motion representations within the visual system generate the FLE. These representations are modulated by sudden visual input (e.g. offset signals) or by input from other systems (e.g. sensorimotor) that can boost or attenuate overshooting representations in accordance with biased neural competition (Desimone & Duncan, 1995).

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This paper presents the application of Networks of Evolutionary Processors to Decision Support Systems, precisely Knowledge-Driven DSS. Symbolic information and rule-based behavior in Networks of Evolutionary Processors turn out to be a great tool to obtain decisions based on objects present in the network. The non-deterministic and massive parallel way of operation results in NP-problem solving in linear time. A working NEP example is shown.

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This dissertation explored the subversive feminine discourse in the most representative novels of the first quarter of the twentieth century in the newly born republic of Cuba. Drawing on the feminist theories of Simone de Beauvoir, Toril Moi and Pierre Bourdieu, these women were analyzed in the context of their time, their class level and their race. Because it is oppressive and theoretically unsatisfactory to reduce women to their general "humanity" or to their "femininity", my purpose was to analyze them as human beings in a "specific situation" and show how they curtailed the laws that patriarchy has prepared for them. The novels studied were: Doña Guiomar, by Emilio Bacardí; A fuego lento, by Emilio Bobadilla; La manigua sentimental, by Jesús Castellanos; Las honradas, by Miguel de Carrión; Las impuras, by Miguel de Carrión, and Ecué-Yamba-O, by Alejo Carpentier. Women will obtain freedom and independence from patriarchal control, symbolic power, symbolic violence, and hypnotic power when they are educated and have obtained a working position in society similar to men or by joining the political struggle in their community, in their country, or in the global organizations.

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This re search analyzes the talks dynamics about policy established in YouTube symbolic space. We are interested in examining the way in which the commentators of the video " Globo e os Protestos " articulated in the field intended for comments, a public space directed to the dissemination and circulation of meanings about policy issues. The video studied was published by PC Siqueira and Diego Quint eiro , during the June 2013 protests in Br azil, to direct the political understanding of the movement lived in that period. According to them, the protests had left political position and therefore the protesters should reject the coverage by TV Globo (a comunication vehicle with ideals of right) and allow the participation of political parties linked to the ideological left spectrum. This narrative generated empathy and controversy betwe en commentators, which produced in the comments, an intense argumentative process about these theses (right and left). To understand the phenomenon, we conducted an exploratory qualitative research, the main methodological procedure was a ethnomethodological discourse analysis. We seek the observation of the ways in which the commentators es tablished talks about politics in the comments space, for, thereafter , organize categories of analysis based on identified discursive recurrences. The empirical reflections are supported from discussions about the YouTube potential, while digital media com prising massive strategies and while articulating space in the engagement of individuals in political issues; also confront the aspects involved in the conversation practices that results in sociability dynamics and , especially , in conflict, on the socio - t echnical networks; and finally, we propose a reflection about the circuit actuation in which the people take ownership and realize new readings about the products received. Concluding that the use of digital media , such as YouTube, has caused significant c hanges in the forms of production and reception of symbolic products and ways in which people participate in political issues concerning life in society.

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The thesis presented is committed to a poetic reading that results in the creation of meaning and images of the death from the various cultural practices and symbolic representations exposed in urban cemeteries in some Brazilian cities, aiming to give visibility to new understandings about the imaginary of the in the contemporary scene. Death, therefore, will be seen as a imagining condition of anthroposwhen starts itself from the prerogative of the human consciousness of death (MORIN, 1970), in other words, this awareness that man has he will die and that triggers reflections about their existence allows the emergence of a number of practices such as: mourning, funeral rituals and the creation of several impregnated representations of human emotions emerged from the death facing the man and present, in a more evident form in cemeterial spaces. For this, it focuses on the conflictuous dimension that man establishes with death, because the cultural practices and symbolic representations observed in the research field are the result of this conflict and allow the expansion of the senses about this issue, to the extent that these are coated with a fantastic aura, mystical, secret, spooky, fearful, religious, building a complex imagination. The general plan of this study is to discuss and create, from a phenomenology of imagination and materials / dynamics imagination, as well as along the lines treated by Gaston Bachelard, images of death, from a field experience in cemeteries in Brazil. For this, it is assumed, to observe the cultural practices and symbolic representations in these spaces, a posture able to make the experience into the search field a moment of symbolic exchanges and creation. Thus, it was used observation, conversations with visitors and employees of the cemeteries and the capture of photographic records. The data produced as a fragment of a conversation, a tearful outburst about the loss of a relative, a melancholic epitaph, a flower on the grave or a cry captured by photography were seen as detonators of meanings and a poetic of the imagination.

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The thesis presented is committed to a poetic reading that results in the creation of meaning and images of the death from the various cultural practices and symbolic representations exposed in urban cemeteries in some Brazilian cities, aiming to give visibility to new understandings about the imaginary of the in the contemporary scene. Death, therefore, will be seen as a imagining condition of anthroposwhen starts itself from the prerogative of the human consciousness of death (MORIN, 1970), in other words, this awareness that man has he will die and that triggers reflections about their existence allows the emergence of a number of practices such as: mourning, funeral rituals and the creation of several impregnated representations of human emotions emerged from the death facing the man and present, in a more evident form in cemeterial spaces. For this, it focuses on the conflictuous dimension that man establishes with death, because the cultural practices and symbolic representations observed in the research field are the result of this conflict and allow the expansion of the senses about this issue, to the extent that these are coated with a fantastic aura, mystical, secret, spooky, fearful, religious, building a complex imagination. The general plan of this study is to discuss and create, from a phenomenology of imagination and materials / dynamics imagination, as well as along the lines treated by Gaston Bachelard, images of death, from a field experience in cemeteries in Brazil. For this, it is assumed, to observe the cultural practices and symbolic representations in these spaces, a posture able to make the experience into the search field a moment of symbolic exchanges and creation. Thus, it was used observation, conversations with visitors and employees of the cemeteries and the capture of photographic records. The data produced as a fragment of a conversation, a tearful outburst about the loss of a relative, a melancholic epitaph, a flower on the grave or a cry captured by photography were seen as detonators of meanings and a poetic of the imagination.

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El objetivo de este ensayo es el de relacionar de forma reflexiva las nuevas dinámicas de colonización, dominación y poder contemporáneas, con las cartografías simbólicas de la ciudad global y sus respectivas fronteras o bordes sistémicos, muchos de ellos desapercibidos por las personas y atravesados por jerarquías y clasificaciones las cuales se hallan inmersas, a su vez,en una multidimensionalidad social tanto positiva como negativa que genera que podamos hablar de una indecibilidad de lo simbólico. En torno a ello se desprende, asimismo, el objetivo de repensar desde una perspectiva crítica y relacional el espacio urbano y heterogéneo en el cual confluyen formas diversas de identidad, subjetividad y aplicabilidad normativa y social de lo jurídico. Finalmente se dejará planteada la pregunta de hasta dónde puede llegar la agencia humana ante cada una de las distintas fronteras y bordes sistémicos y simbólicos de lo global-heterogéneo, considerando para ello aportes teóricos como los de Suely Rolnik, que indican que hoy en día existen subjetividades acríticas por las cuales el poder adquiere cierta plasticidad y hegemonía alienantes.

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La obra de arte tiene la capacidad de convocar en la conciencia colectiva aquello que ha sido excluido, funcionando del mismo modo que los sueños, los síntomas o los mitos. La interpretación arquetipal buscará más allá de las relaciones causales entre un tiempo y su arte, otras de complementariedad o de compensación, que nos llevan hacía un análisis profundo, innatista, más simbólico y más espiritual de la obra de arte. Previamente revisamos los referentes de la postmodernidad y nos preguntamos sobre la muerte del arte en nuestro mundo actual. Para finalizar respondemos a esta pregunta abriendo dos posibilidades opuestas, discrepantes y ambas posibles. En una de ellas apostamos por la muerte del arte, justificada desde los postulados de la psicología arquetipal. En la otra, desde la misma perspectiva, optamos por la supervivencia de un mensaje subyacente en el arte postmoderno, que por tanto permanece vivo y preparado para complementar la conciencia colectiva y nuestra psique actual.

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New challenges posed by global environmental change have motivated scholars to pay growing attention to historical long-term strategies to deal with climate extremes. We aim to understand long-term trends in community responses to cope with droughts, to explain how many preindustrial societies coevolved with local hydro-climatic dynamics and coped with climate extremes over time. The specific goals of this work are: (1) to analyze how local communities experienced droughts over long periods of time and (2) to document the spectrum of recorded community responses to drought. Our research covers over one century (1605-1710) of responses to drought in the community of Terrassa, Barcelona, Spain. Data were collected through archival research. We reviewed and coded 2076 village council minutes. Our results show that the local community adopted a mixture of symbolic, institutional, and infrastructural responses to drought and that drought-related decisions varied through time. We discuss adaptation strategies on the basis of the distinct physical signals of drought propagation and the role of nonclimatic historical factors, such as warfare and public debt, in shaping responses. We conclude that long-term perspectives on premodern history and comparable empirical studies are fundamental to advance our understanding of past social responses to hydro-climatic extremes.

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This participative research interested in the social praxis attempts to understand the moral principles that set the magic rituals and the places of worship of three jurema centers of the potiguar region of Canguaretama. Among other inner particularly aspects of each focused catimbó-jurema center, it is being discussed the collective standards involved in the reliance and fellowship values assumed in the private magical gatherings by the juremeiras leaders and their partners, in contrast to the prestige seeking and the individualism that influence both the symbolic competitions and the witchcraft works that link these agents to the broader catimbozeiro universe of this region. Finally, the moral practices which make part of the juremeiro left-right dualism are investigated based on the understanding that the referred native pantheonic-ritual dichotomy does not necessarily express two moralities substantially adversed in terms of benefits or harms, but a series of moral actions subject to the specular logic of the tit-for tat. Thus, this research seeks to prove that this moral structure of symbolic reciprocity, as well as the witchcraft centrality in the catimbozeiro world, finds a certain causal link in a world view which guiding principle is the ontological evil of the catholic cosmology

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The existence of genuinely non-geometric backgrounds, i.e. ones without geometric dual, is an important question in string theory. In this paper we examine this question from a sigma model perspective. First we construct a particular class of Courant algebroids as protobialgebroids with all types of geometric and non-geometric fluxes. For such structures we apply the mathematical result that any Courant algebroid gives rise to a 3D topological sigma model of the AKSZ type and we discuss the corresponding 2D field theories. It is found that these models are always geometric, even when both 2-form and 2-vector fields are neither vanishing nor inverse of one another. Taking a further step, we suggest an extended class of 3D sigma models, whose world volume is embedded in phase space, which allow for genuinely non-geometric backgrounds. Adopting the doubled formalism such models can be related to double field theory, albeit from a world sheet perspective.

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O presente relatório tem como principal objetivo desenvolver a competência da interculturalidade no âmbito da linguagem não-verbal de alunos portugueses, do 3º ciclo do ensino básico, com frequência à disciplina de Espanhol. A Linguagem não-verbal tem um contributo preponderante na comunicação e, quando há a pretensão de se conhecer outra cultura, é forçoso que se interpretem os diferentes sistemas onde cada indivíduo se integra e interage, porque comunicar eficazmente com o outro implica um conhecimento das estruturas simbólicas e dos códigos culturais intrínsecos, não só à cultura de um outro específico, mas também ao seu próprio contexto sociocultural, histórico-cultural e económico-cultural. Este trabalho faz apologia de um ensino intercultural que promova o diálogo entre culturas, sabendo-se de antemão que há representações que devem ser desconstruídas, bem como uma linguagem não-verbal específica que pode interferir na pragmática da interculturalidade. Trata-se de uma investigação-ação demarcada por dois momentos distintos: um primeiro estudo vocacionado para a consciencialização dos alunos de que a comunicação não-verbal é uma competência que se ensina e se aprende e um segundo estudo dedicado a aspetos culturais diferenciadores, entre Espanha e Portugal, na linguagem não-verbal , com enfoque nos gestos culturais e no tratamento do tempo. Os dados a analisar são: a transcrição de uma aula gravada, onde foram aplicados vários recursos audiovisuais e escritos consentâneos com as unidades programáticas, e as respostas a um questionário dirigido à turma de intervenção e a uma turma de nacionalidade espanhola que com ela colaborou. A implementação destas atividades/estratégias didáticas permitiu concluir que, por um lado, os alunos interpretam os diferentes códigos não -verbais à luz de uma perspetiva universal, por outro, há uma forte influência de estereótipos herdados e filtrados, a partir de diferentes marcos histórico-temporais. Este estudo sobre o não- verbal também se traduziu num alicerce bastante hábil para motivar à aprendizagem em geral e para enriquecer o conhecimento sobre a cultura do outro e a sua própria cultura, através da aquisição de códigos não- verbais comunicativo-funcionais.