Modelando contexto e registro: o projeto de cartografia de registro a longo prazo

This paper presents the outlines of a long-term project concerned with the modelling of context and register along the lines originally drawn by M.A.K. Halliday and Ruqaiya Hasan in Systemic Functional Linguistics (SFL) — thus with “register” in its original sense of a functional variety of language, i.e. the meanings at risk in a given type of context. The topic of this project can be characterized as register cartography. Section 1 presents the background to work on the modelling of context and register, noting different uses in SFL of the term “register” locating the notion of register as functional variation in terms of the two semiotic dimensions of the hierarchy of stratification and the cline of instantiation. Section 2 sets out alternative models of context and register, identifying the key semiotic dimensions involved in these models. It then compares and contrasts the models. Section 3 adds to this account of work on context and register by summarizing work that has been done in computational linguistics informed by SFL — important work that has sometimes been overlooked by researchers concerned mainly with manual discourse analysis. Based on the background sketched in Sections 1 through 3, Section 4 then reports on the long-term project of registerial cartography, giving a general account with examples of findings such as differentiation of registers in terms of relative text frequency of terms in certain major systems. Section 5 focusses on one aspect of the long-term project — viz. the description of different fields of activity: eight primary fields of activity, each differentiated into more delicate subtypes — illustrated by means of variation in the deployment of pictorial resources. The more delicate subtypes are then used to related the field-based cartography to the genres identified and described within the “Genre Model” of the “Sydney School”, in the work led by J.R. Martin. Field of activity is compared and contrasted with genre in the sense of goaloriented social process. Building on the account of fields of activity, Section 6 adds tenor and mode consideration, illustrating how fields of activity can be intersected with tenor and mode values. Section 7, the Conclusion, summarizes the presentation, and relates it to considerations of institutions as domains of culture consisting of arrangements of situation types, and of persons as aggregates of personae operating in different relationships in different social groups — including a reference to Gu Yue-guo’s work on discourse geography.Este artigo apresenta esboços de um projeto de longo prazo referente à modelagem de contexto e registro através das linhas originalmente traçadas por M. A. K. Halliday e Ruqaiya Hasan em Linguística Sistêmico-Funcional (LSF) – portanto com “registro” em seu sentido original de uma variedade funcional da linguagem, isto é, o sentido em questão em um dado tipo de contexto. O tema deste projeto pode ser caracterizado como cartografia de registro. A Seção 1 apresenta o pano de fundo para o trabalho com a modelagem de contexto e registro, observando-se diferentes usos em LSF do termo “registro”, localizando a noção de registro como variação funcional em termos das duas dimensões semióticas da hierarquia de estratificação e do continuum de instanciação. A Seção 2 apresenta modelos alternativos de contexto e registro identificando as dimensões semióticas principais envolvidas nesses modelos. A seguir, comparam-se e contrastam-se os modelos. A Seção 3 contribui para a descrição do estudo acerca de contexto e registro ao resumir o trabalho que tem sido feito em linguística computacional baseada em LSF – importante tarefa às vezes negligenciada por pesquisadores que se dedicam principalmente à análise manual do discurso. Com base no esboço apresentado nas Seções 1 a 3, a Seção 4 relata um projeto de longa duração acerca da cartografia de registro, dando uma visão geral com exemplos de achados tais como diferenciação de registros em termos de sua relativa frequência em textos em listas de termos em certos sistemas importantes. A Seção 5 enfoca um aspecto do projeto a longo prazo – qual seja a descrição de diferentes campos de atividade: oito campos primários de atividade, cada um agrupado em subtipos mais específicos – ilustrados por meio de variação no emprego de recursos pictoriais. Os tipos mais específicos são a seguir usados para relacionar a cartografia baseada em campos específicos identificada e descrita segundo o “Modelo de Gênero” da “Escola de Sydney”, no trabalho liderado por J. R. Martin. O campo de atividade é comparado e contrastado com o gênero no sentido de processo social orientado para objetivos. Construído na descrição de campos de atividade, a Seção 6 acrescenta considerações sobre relações e modo, ilustrando como campos de atividade podem estabelecer intersecção com valores de relações e modo. A Seção 7, a Conclusão, resume a apresentação e a relaciona com considerações acerca de domínios da cultura, consistindo em arranjos de tipos de situação e de pessoas como agregados de personae operando em diferentes relações em diferentes grupos sociais – incluindo uma referência ao trabalho de Gu Yue-guo sobre geografia do discurso

Arctic Continental Margin Sediments as Possible Fe and Mn Sources to Seawater as Sea Ice Retreats: Insights From the Eurasian Margin

Continental margins are hot spots for iron (Fe) and manganese (Mn) cycling. In the Arctic Ocean, these depositional systems are experiencing rapid changes that could significantly impact biogeochemical cycling. In this study, we investigate whether continental margin sediments north of Svalbard represent a source or sink of Fe and Mn to the water column and how climate change might alter these biogeochemical cycles. Our results highlight that sediments on the Yermak Plateau and Sofia Basin exhibit accumulations of Fe and Mn phases compared to average shale. Conversely, sediments from the Barents Sea slope exhibit lower enrichments of Fe and Mn compared to average shale, with the exception of enriched, near‐surface sediment layers. Pore waters from these slope sites provide evidence for Fe and Mn reduction and diffusion of Fe and Mn into near surface sediments, which are susceptible to physical or biogeochemical remobilization. These regional patterns are best explained by the spatial distribution of sea ice coverage and labile organic carbon fluxes to the seafloor. As sea ice continues to retreat and the Yermak Plateau becomes seasonally ice‐free, productivity is expected to increase, which would increase the flux of carbon to the sediments, thereby increasing oxidant demand, and the reduction of Fe and Mn mineral phases. Our results suggest that as sea ice continues to retreat, the Yermak Plateau and other Arctic continental margins could become sources of Fe and Mn to Arctic bottom waters

Report and preliminary results of R/V SONNE Cruise SO251 - Extreme events Archived in the GEologial Record of JAPAN's subduction margins (EAGER-JAPAN)

Leg A SO251-1, Yokohama - Yokohama, 04.10.2016 - 15.10.2016, Leg B SO251-2, Yokohama - Yokohama, 18.10.2016 - 02.11.201

Combining clauses into clause complexes : a multi-faceted view

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Remembering Bill Mann

William C. Mann passed away on August 13, 2004, after a long struggle with leukemia. He is known to readers of Computational Linguistics as a keen supporter and past president (1987) of ACL, a pioneer in the development of text generation as a field of research in computational linguistics, the originator of rhetorical structure theory (RST) and dialogue game theory (DGT), and the developer (together with DavidWeber) of dialect adaptation as a technique within machine translation. And he’ll be remembered for these and many other contributions, but above all, in this context, he’ll be remembered as a unique visionary in computational linguistics (CL) and as a truly wonderful and extraordinarily generous colleague.11 page(s

Descriptive motifs and generalizations

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Lexicogrammar in discourse development : logogenetic patterns of wording

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The Evolution of language : a systemic functional exploration of phylogenetic phases

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Ideas and new directions

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The 'Architecture' of language according to systemic functional theory : developments since the 1970s

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