899 resultados para Time and space


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The purpose of this paper is to analyze how Gustavo Barroso sought to discursively construct what would be the Brazilian spatiality through an Interpretation of national history marked by the Jewish conspiracy theory, a racist doctrine in various aspects dialogued with Nazi doctrine, and the thought the Catholic Restoration. Writing that built a given image of the nation. Writing and producing product that is the source of other discourses that operate on the world, appointing him, enveloping him in a load of meanings. Interpretations of time and space that discursively construct realities and ways of being in the world. For the development of this work we will focus mainly on the analysis of the literature of the period integralist Gustavo Barroso since the year 1933 until the year 1937, as well as undertake an analysis of the Cohen Plan, which we understood to be the heir of a grid of thought that falls in line with the theories of political and racial anti-Semitic plot. Thus, we assume that it is necessary to think of the space also in their political and cultural dimensions, and with an barrosiana significance of national space, expressed in the discursive field, the result of a given historical moment and engaged with certain power relations, which unfold through complex relationships, we understand that Barroso made the reading of the Brazilian nation would be its own representation.

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The cello has a prominent place in the music of Roberto Victorio, due to the fact the composer is a cellist and knows the idiomatic and technical aspects of the instrument. This article analyzes the skills and knowledge necessary to the performance of the works Aztlan and Chronos III for solo cello. As methodological procedure the work was built in three stages: at first a study on notation in the works of Victorio was develeped and how the concepts of desperception, timbre, time and space influence his writing. In a second moment the author made an interview with the composer and finally held performances and recordings of works using the concepts researched in the first two steps.

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Based on the theoretical and methodological presuppositions of the theory of language variation and change (cf. WEINREICH; LABOV; HERZOG, 2006 [1968]), it is described and analyzed in this article the process of variation/change concerning the second person possessive pronouns in letters from readers of Brazilian newspapers from the XIX and XX centuries. These letters feature a portrait of the Brazilian press from the South (Santa Catarina), Southeast (Rio de Janeiro) and Northeast (Bahia and Rio Grande do Norte) regions in each century and are part of the Project for Brazilian Portuguese History‘s (PHPB) printed common minimal corpus. The point of departure of this work is the idea that the use of variant forms of expressing second person possessive pronouns – teu and seu – results from the interaction characterizing the varied social roles performed by the letters‘ senders. Arranging communicative units, which gather elements/features denoting time and space, conditioned and determined by socio-historical and cultural aspects, the readers‘ letters, turn out to be a promising research field under the light of this paper. More specifically, In the row of presented results in studies about the pronominal system in the diachroneity of/in Brazilian Portuguese (PB) (FARACO, 2002; LORENGIAN-PENKAL, 2007; CALLOU; LOPES, 2003; LOPES; DUARTE, 2003; MENON, 2005; ARDUIN; COELHO, 2006; LOPES, 2009; MARCOTULIO, 2010), the results featured in here point at different usages of the possessives, noticing the coexistence of the forms teu/tua and seu/sua strongly conditioned by the socio-discursive nature of the readers‘ letters in the course of the centuries and through different regions.

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Based on the theoretical and methodological presuppositions of the theory of language variation and change (cf. WEINREICH; LABOV; HERZOG, 2006 [1968]), it is described and analyzed in this article the process of variation/change concerning the second person possessive pronouns in letters from readers of Brazilian newspapers from the XIX and XX centuries. These letters feature a portrait of the Brazilian press from the South (Santa Catarina), Southeast (Rio de Janeiro) and Northeast (Bahia and Rio Grande do Norte) regions in each century and are part of the Project for Brazilian Portuguese History‘s (PHPB) printed common minimal corpus. The point of departure of this work is the idea that the use of variant forms of expressing second person possessive pronouns – teu and seu – results from the interaction characterizing the varied social roles performed by the letters‘ senders. Arranging communicative units, which gather elements/features denoting time and space, conditioned and determined by socio-historical and cultural aspects, the readers‘ letters, turn out to be a promising research field under the light of this paper. More specifically, In the row of presented results in studies about the pronominal system in the diachroneity of/in Brazilian Portuguese (PB) (FARACO, 2002; LORENGIAN-PENKAL, 2007; CALLOU; LOPES, 2003; LOPES; DUARTE, 2003; MENON, 2005; ARDUIN; COELHO, 2006; LOPES, 2009; MARCOTULIO, 2010), the results featured in here point at different usages of the possessives, noticing the coexistence of the forms teu/tua and seu/sua strongly conditioned by the socio-discursive nature of the readers‘ letters in the course of the centuries and through different regions.

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This research is a study that deals with the language of the players bodies of Ciranda (a typical dance in circle in Brazil) – more specifically the one of Lia from Itamaracá. Our interest is to observe how this body dances, communicates, writes on time and space, establishing relations that complement and help to remain in construction. Thus, in a circular way and in an energy that is transmitted with the contact of the touch of the hands, in the power of song, in a circle that can be seen from many places, but by different angles, holding on that the particularities of its subjects players/dancers/observers, and that we propose ourselves to think: who are those players bodies and how do they build the circles of Ciranda? Therefore, during the pathway of the research, we were conducted by the phenomenological method and, from this, used the concepts of lived and sensible world. Our interest in this manifestation is, also, the body that dances and insert itself in the artistic expression, meaning and opening itself to the knowledge by the experience. Therefore, we assume a conception of the body that refers itself in the merleaupontyana fenomenologic approach, in this way, in its criativity in relation to the body as a fragmented being, as it is pointed by the Cartesiana theory. In this perspective, we understand the body in its relations with the culturals, sociais, economics and artistics issues that integrates it, in others words, in the relations that helped us to better understand the body as it is. This way, this research has as main objective to present the refletions about the players body, mainly, of Lia from Itamaracá and with this body to dance, to communicate, to write itself on time and space, estabilishing relations that complement and help to stay in construction. Such a statement leads us in this work, to inquire, for example: what mobilizes those subjects on this dance? We understand that elements as the place that is always in modification, the costumes, the musicality and the change in the movimentation of the players body in each new circle, those elements are factors that activate a permanente reconfiguration that are happening in the Ciranda dance nowadays. Finally, we assert that this investigation comes in reason to the big dimension that the Ciranda has achivied in Brazil, especially in the Northeast, as the existence of few references and registers of the reseach manifestation in the academic areas. It is possible to verify, in this research, that, in reason to this spreading, the nuances of the players bodies is even more diversified and that the missing of experiences on Itamaracá island - PE, its origin has putting away the original and community, becames, more and more, a dance of others stages and squares.

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The use of planktonic foraminifera in paleoceanographic studies relies on the assumption that morphospecies represent biological species with ecological preferences that are stable through time and space. However, genetic surveys unveiled a considerable level of diversity in most morphospecies of planktonic foraminifera. This diversity is significant for paleoceanographic applications because cryptic species were shown to display distinct ecological preferences that could potentially help refine paleoceanographic proxies. Subtle morphological differences between cryptic species of planktonic foraminifera have been reported, but so far their applicability within paleoceanographic studies remains largely unexplored. Here we show how information on genetic diversity can be transferred to paleoceanography using Globorotalia inflata as a case study. The two cryptic species of G. inflata are separated by the Brazil-Malvinas Confluence (BMC), a major oceanographic feature in the South Atlantic. Based on this observation, we developed a morphological model of cryptic species detection in core top material. The application of the cryptic species detection model to Holocene samples implies latitudinal oscillations in the position of the confluence that are largely consistent with reconstructions obtained from stable isotope data. We show that the occurrence of cryptic species in G. inflata, can be detected in the fossil record and used to trace the migration of the BMC. Since a similar degree of morphological separation as in G. inflata has been reported from other species of planktonic foraminifera, the approach presented in this study can potentially yield a wealth of new paleoceanographical proxies.

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A compiled set of in situ data is important to evaluate the quality of ocean-colour satellite-data records. Here we describe the data compiled for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The data were acquired from several sources (MOBY, BOUSSOLE, AERONET-OC, SeaBASS, NOMAD, MERMAID, AMT, ICES, HOT, GeP&CO), span between 1997 and 2012, and have a global distribution. Observations of the following variables were compiled: spectral remote-sensing reflectances, concentrations of chlorophyll a, spectral inherent optical properties and spectral diffuse attenuation coefficients. The data were from multi-project archives acquired via the open internet services or from individual projects, acquired directly from data providers. Methodologies were implemented for homogenisation, quality control and merging of all data. No changes were made to the original data, other than averaging of observations that were close in time and space, elimination of some points after quality control and conversion to a standard format. The final result is a merged table designed for validation of satellite-derived ocean-colour products and available in text format. Metadata of each in situ measurement (original source, cruise or experiment, principal investigator) were preserved throughout the work and made available in the final table. Using all the data in a validation exercise increases the number of matchups and enhances the representativeness of different marine regimes. By making available the metadata, it is also possible to analyse each set of data separately.

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Light varies widely in both time and space in forest formation of “Bioma Cerrado”. Cybistax antisyphilitica occurs in areas typical of this biome, such as cerrado sensu stricto, “cerradões”, and altered areas. The aim of this study was to understand the morphological and physiological responses of C. antisyphilitica to alterations in light intensity. Juvenile plants (5 month of age) were taken to a fragment of semideciduous forest in Uberlândia-MG, and were divided into three treatments: 50 were maintained under the canopy (UC) 20 were kept in small gap (SG) and 20 were maintained under in full sun (FS). The daily courses of chlorophyll a fluorescence were made at the beginning, middle and end of dry season in 2015. At the end of the experiment measurements of chlorophyll content, gas exchange and growth were made. The plants showed dynamic photoinhibition as exhibited by reductions on Fv/Fm close to midday at the end of the dry season. Regarding the effective quantum yield (ΔF/Fm'), plants under FS showed reduced values that coincided with the higher values of electron transport rates (ETR). Plants under FS showed higher values of net CO2 assimilation rates, stomatal conductance, transpiration rates, water use efficiency and chlorophyll content compared to plants under UC. The stem diameter, dry mass of leaves and stem, total dry mass and relative growth rate were higher in plants under FS than plants under UC. On the other hand, plants under UC showed superior values of height, specific leaf area and leaf area ratio. Our results indicate that C. antisyphilitica has plasticity to survive in the contrasting light environments of the semideciduous forests, but this species was able to growth better under full sun conditions.

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Mapeamento das dissertações e teses referentes à subárea da comunicação popular, alternativa e comunitária (CPAC) desenvolvidas nos Programas de Pós-Graduação em Comunicação stricto sensu no Brasil, de 1972 a 2012. Dentre os objetivos estão localizar as pesquisas; os autores; sua distribuição no tempo e espaço; identificar as instituições e orientadores que impulsionam a subárea; definir as abordagens teórico-metodológicas; e apontar autores/conceitos referência. Por meio de pesquisa exploratória e aplicação de quatro filtros, chegou-se a uma amostra final de 102 pesquisas, 87 dissertações e 15 teses, submetidas à análise quantitativa, por meio de Análise de Conteúdo a partir de partes pré-definidas (Resumo, Palavras chave, Introdução, Sumário, Considerações Finais e capítulo metodológico, quando presente), e a uma análise qualitativa do conteúdo completo das 15 teses. O método que orienta esta pesquisa é o histórico dialético, na perspectiva da busca de uma análise de conjunto e atenta às contradições e mudanças que o objeto está implicado; e a pesquisa bibliográfica que a fundamenta se ancora em autores como Jorge González, Cicilia Peruzzo, Regina Festa, Pedro Gilberto Gomes, Gilberto Giménez e Augusto Triviños e foi realizada com o apoio do software NVivo. Resultados quantitativos indicam: a) predominância de pesquisas sobre comunicação comunitária (68%) b) predominância de estudos empíricos (79%); c) a variedade de denominações atribuídas às experiências pelos pesquisadores; d) a constante luta das classes populares por democratização da comunicação e por direitos sociais ao longo dos anos; e) a influência e importância dos intelectuais orgânicos nas experiências estudadas, f) problemas metodológicos; g) UMESP, USP e UFRJ como instituições protagonistas, e, h) Cicilia Peruzzo e Raquel Paiva como as que mais orientam teses e dissertações sobre a temática. Quanto à análise qualitativa verificaram-se alguns critérios que permeiam a CPAC: 1) a definição de classes subalternas; 2) a importância da participação ativa das comunidades nos processos de comunicação; e 3) formas, conteúdos e objetivos que se complementam e dão identidade às experiências

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O jornalismo é um dos principais meios de oferta de temas para a discussão e formação da opinião pública, porém depende de um sistema técnico para ser transmitido. Durante mais de cem anos as informações produzidas pela imprensa foram emitidas, armazenadas, transmitidas e recebidas pelos chamados veículos de comunicação de massa que utilizam a rede centralizada cujas características estão na escassez material, produção em série e massificação. Esse sistema separa no tempo e no espaço emissores e receptores criando uma relação desigual de força em que as grandes empresas controlaram o fluxo informativo, definindo quais fatos seriam veiculados como notícia. Em 1995, a internet cuja informação circula sob a tecnologia da rede distribuída, foi apropriada pela sociedade, alterando a forma de produção, armazenamento e transmissão de informação. A tecnologia despertou a esperança de que esta ferramenta poderia proporcionar uma comunicação mais dialógica e democrática. Mas aos poucos pode-se perceber novas empresas se apropriando da tecnologia da rede distribuída sob a qual circula a internet, gerando um novo controle do fluxo informativo. Realizou-se nessa pesquisa um levantamento bibliográfico para estabelecer uma reflexão crítica dos diferentes intermediários entre fato e a notícia tanto da rede centralizada como na rede distribuída, objetivando despertar uma discussão que possa oferecer novas ideias para políticas, bem como alternativas para uma comunicação mais democrática e mais libertária.

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A new modality for preventing HIV transmission is emerging in the form of topical microbicides. Some clinical trials have shown some promising results of these methods of protection while other trials have failed to show efficacy. Due to the relatively novel nature of microbicide drug transport, a rigorous, deterministic analysis of that transport can help improve the design of microbicide vehicles and understand results from clinical trials. This type of analysis can aid microbicide product design by helping understand and organize the determinants of drug transport and the potential efficacies of candidate microbicide products.

Microbicide drug transport is modeled as a diffusion process with convection and reaction effects in appropriate compartments. This is applied here to vaginal gels and rings and a rectal enema, all delivering the microbicide drug Tenofovir. Although the focus here is on Tenofovir, the methods established in this dissertation can readily be adapted to other drugs, given knowledge of their physical and chemical properties, such as the diffusion coefficient, partition coefficient, and reaction kinetics. Other dosage forms such as tablets and fiber meshes can also be modeled using the perspective and methods developed here.

The analyses here include convective details of intravaginal flows by both ambient fluid and spreading gels with different rheological properties and applied volumes. These are input to the overall conservation equations for drug mass transport in different compartments. The results are Tenofovir concentration distributions in time and space for a variety of microbicide products and conditions. The Tenofovir concentrations in the vaginal and rectal mucosal stroma are converted, via a coupled reaction equation, to concentrations of Tenofovir diphosphate, which is the active form of the drug that functions as a reverse transcriptase inhibitor against HIV. Key model outputs are related to concentrations measured in experimental pharmacokinetic (PK) studies, e.g. concentrations in biopsies and blood. A new measure of microbicide prophylactic functionality, the Percent Protected, is calculated. This is the time dependent volume of the entire stroma (and thus fraction of host cells therein) in which Tenofovir diphosphate concentrations equal or exceed a target prophylactic value, e.g. an EC50.

Results show the prophylactic potentials of the studied microbicide vehicles against HIV infections. Key design parameters for each are addressed in application of the models. For a vaginal gel, fast spreading at small volume is more effective than slower spreading at high volume. Vaginal rings are shown to be most effective if inserted and retained as close to the fornix as possible. Because of the long half-life of Tenofovir diphosphate, temporary removal of the vaginal ring (after achieving steady state) for up to 24h does not appreciably diminish Percent Protected. However, full steady state (for the entire stromal volume) is not achieved until several days after ring insertion. Delivery of Tenofovir to the rectal mucosa by an enema is dominated by surface area of coated mucosa and whether the interiors of rectal crypts are filled with the enema fluid. For the enema 100% Percent Protected is achieved much more rapidly than for vaginal products, primarily because of the much thinner epithelial layer of the mucosa. For example, 100% Percent Protected can be achieved with a one minute enema application, and 15 minute wait time.

Results of these models have good agreement with experimental pharmacokinetic data, in animals and clinical trials. They also improve upon traditional, empirical PK modeling, and this is illustrated here. Our deterministic approach can inform design of sampling in clinical trials by indicating time periods during which significant changes in drug concentrations occur in different compartments. More fundamentally, the work here helps delineate the determinants of microbicide drug delivery. This information can be the key to improved, rational design of microbicide products and their dosage regimens.

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La fluoration artificielle de l’eau est une méthode employée en tant que moyen de prévention de la carie dentaire. Il s’agit d’un traitement de l’eau dont le but est d’ajuster de façon « optimale » la concentration en fluorure dans l’eau potable pour la prévention de la carie dentaire, par l’ajout d’un composé fluoré. La fluoration de l’eau fait l’objet d’un débat de société depuis le début des années 1950. La théorie du cycle hydrosocial nous invite à réfléchir sur la manière dont l’eau et la société se définissent et se redéfinissent mutuellement dans le temps et dans l’espace. Cette théorie nous permet d’aborder l’étude du sujet de la fluoration avec une nouvelle perspective d’analyse. Il y a peu d’études en sciences sociales qui portent sur le sujet de la fluoration, généralement abordé d’un point de vue des sciences de la santé. Nous proposons de décrire le processus de production des eaux fluorées dans un contexte hydrosocial. Ce mémoire est structuré en quatre chapitres. Nous commençons par familiariser le lecteur avec la théorie du cycle hydrosocial. Ensuite, nous faisons une mise en contexte de la fluoration de l’eau, d’une part en présentant un état des lieux, et d’autre part en présentant ce en quoi consiste la pratique de la fluoration de l’eau. Après avoir familiarisé le lecteur avec les thèmes généraux concernant la fluoration de l’eau, nous proposons de reconstituer une histoire hydrosociale de la fluoration. Cette histoire nous permet de mettre en évidence les relations hydrosociales desquelles découle la production des eaux fluorées. L’histoire hydrosociale de la fluoration comporte une phase contemporaine que nous abordons en présentant les principales idées de l’opposition à la fluoration artificielle de l’eau à l’aide notamment d’une analyse iconographique d’images portant sur le thème de la fluoration. Finalement, nous discutons des implications de la théorie du cycle hydrosocial pour étudier la problématique de la fluoration.

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El propósito de este trabajo de investigación es relevar la experiencia de una escuela pública del distrito de La Matanza, en el conurbano bonaerense. Esta institución enclavada en una zona popular, Villa Scasso, fue creada hace trece años y atiende a una población infantil y juvenil de educación especial. El motivo de la investigación no se centra en la especificidad de este campo educativo sino en el proceso de construcción de una propuesta pedagógica que tensiona las formas escolares, amplía las fronteras educativas y transforma el tiempo y el espacio escolar. La atención de la presente indagación está puesta en problematizar la relación de la educación con la desigualdad y la igualdad, con el objetivo de abrir nuevos interrogantes sobre el carácter de determinación que se le otorga a la pobreza, la marginalidad y la exclusión en el terreno educativo, en particular en su relación con las escuelas de sectores populares. Las infancias populares acceden a circuitos de escolarización diferenciados, pero su carácter reproductor y/o emancipador configura un discurso que no se clausura a priori. Esta tesis doctoral abre interrogantes sobre esta problemática y documenta una experiencia educativa que "hace escuela" de manera "especial"

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El propósito de este trabajo de investigación es relevar la experiencia de una escuela pública del distrito de La Matanza, en el conurbano bonaerense. Esta institución enclavada en una zona popular, Villa Scasso, fue creada hace trece años y atiende a una población infantil y juvenil de educación especial. El motivo de la investigación no se centra en la especificidad de este campo educativo sino en el proceso de construcción de una propuesta pedagógica que tensiona las formas escolares, amplía las fronteras educativas y transforma el tiempo y el espacio escolar. La atención de la presente indagación está puesta en problematizar la relación de la educación con la desigualdad y la igualdad, con el objetivo de abrir nuevos interrogantes sobre el carácter de determinación que se le otorga a la pobreza, la marginalidad y la exclusión en el terreno educativo, en particular en su relación con las escuelas de sectores populares. Las infancias populares acceden a circuitos de escolarización diferenciados, pero su carácter reproductor y/o emancipador configura un discurso que no se clausura a priori. Esta tesis doctoral abre interrogantes sobre esta problemática y documenta una experiencia educativa que "hace escuela" de manera "especial"

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El propósito de este trabajo de investigación es relevar la experiencia de una escuela pública del distrito de La Matanza, en el conurbano bonaerense. Esta institución enclavada en una zona popular, Villa Scasso, fue creada hace trece años y atiende a una población infantil y juvenil de educación especial. El motivo de la investigación no se centra en la especificidad de este campo educativo sino en el proceso de construcción de una propuesta pedagógica que tensiona las formas escolares, amplía las fronteras educativas y transforma el tiempo y el espacio escolar. La atención de la presente indagación está puesta en problematizar la relación de la educación con la desigualdad y la igualdad, con el objetivo de abrir nuevos interrogantes sobre el carácter de determinación que se le otorga a la pobreza, la marginalidad y la exclusión en el terreno educativo, en particular en su relación con las escuelas de sectores populares. Las infancias populares acceden a circuitos de escolarización diferenciados, pero su carácter reproductor y/o emancipador configura un discurso que no se clausura a priori. Esta tesis doctoral abre interrogantes sobre esta problemática y documenta una experiencia educativa que "hace escuela" de manera "especial"