103 research outputs found

    Identificación de patrón de craquelado: estudio de caso en pinturas de Adriano de Sousa Lopes

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    Este estudo teve como objetivo analisar o tipo de estalados presentes nestas obras de Sousa Lopes. Inicialmente, efetuaram-se análises ao material constituinte das preparações, aglutinantes e pigmentos, para, posteriormente, estudar as características físicas das fissuras. Para esse estudo utilizou-se um programa de sistemas de informação, QGIS®. Quanto à classificação dos tipos de estalado, utilizaram-se as metodologias desenvolvidas por Spike Bucklow e Knut Nicolaus. Concluiu-se que estas doze obras de Sousa Lopes apresentam quatro tipos de estalados, que variam em função do período de estada em Lisboa (estalados de espiral, grinalda e grade) e em Paris (estalados de grade fixa, reticulares e diagonal). Os estalados presentes são de idade e prematuro, sendo que a sua origem deriva do mau emprego da técnica e do material, da pouca qualidade do material, da utilização excessiva de secante e de negligência na preservação em acervo.The aim of this study was to find a standard cracks pattern on these Sousa Lopes works. For that, it was carried out a mapping of existing cracks on this twelve paintings, through the open source software QGIS®. The cracks classification was based on Spike Bucklow and Knut Nicolaus methodologies. The outcome was compared with the technical documentation in an attempt to establish relationships between the materials and cracks. However, it was possible to find a typical cracks for the Lisbon period and another one for the Paris period. The prevailing cracks are from aging an drying, and their source derives from the low technique and poor quality of the material, excessive use of drying and negligence in preservation in the collection.Este estudio tiene como objetivo analizar el tipo de craquelado y sus causas en estas obras de Sousa Lopes. Primero se efectuó el análisis material de la preparación, aglutinante y pigmentos para después estudiar las características físicas de las fisuras a través de un programa de Sistemas de Información Geográfica, QGIS®. Para la clasificación de los tipos de cuarteados, orientación, espesura, distancia entre cuarteados e organización, se utilizaron las metodologías desarrolladas por Spike Bucklow y Knut Nicolaus. Los datos cuantitativos y cualitativos obtenidos con el QGIS® fueron comparados con los resultados de la documentación analítica, en un intento de establecer relaciones entre el material y las fisuras. Se concluyó que estas doce obras de Sousa Lopes presentan cuatro tipos de cuarteados, que varían en función de su periodo de estancia en Lisboa (cuarteados de espiral, guirnalda y bastidor) o en Paris (cuarteados de grade fija, reticulares e diagonal). Los craquelados son tanto viejos o de edad como prematuros, y su origen se deriva del mal uso de técnicas y materiales, material de mala calidad, el uso excesivo de secado y la negligencia en la conservación de la colección.info:eu-repo/semantics/publishedVersio

    Dissociating the semantic function of two neighbouring subregions in the left lateral anterior temporal lobe

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    AbstractWe used fMRI in 35 healthy participants to investigate how two neighbouring subregions in the lateral anterior temporal lobe (LATL) contribute to semantic matching and object naming. Four different levels of processing were considered: (A) recognition of the object concepts; (B) search for semantic associations related to object stimuli; (C) retrieval of semantic concepts of interest; and (D) retrieval of stimulus specific concepts as required for naming. During semantic association matching on picture stimuli or heard object names, we found that activation in both subregions was higher when the objects were semantically related (mug–kettle) than unrelated (car–teapot). This is consistent with both LATL subregions playing a role in (C), the successful retrieval of amodal semantic concepts. In addition, one subregion was more activated for object naming than matching semantically related objects, consistent with (D), the retrieval of a specific concept for naming. We discuss the implications of these novel findings for cognitive models of semantic processing and left anterior temporal lobe function

    Preprints in times of COVID19: The time is ripe for agreeing on terminology and good practices

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    Over recent years, the research community has been increasingly using preprint servers to share manuscripts that are not yet peer-reviewed. Even if it enables quick dissemination of research findings, this practice raises several challenges in publication ethics and integrity. In particular, preprints have become an important source of information for stakeholders interested in COVID19 research developments, including traditional media, social media, and policy makers. Despite caveats about their nature, many users can still confuse pre-prints with peer-reviewed manuscripts. If unconfirmed but already widely shared first-draft results later prove wrong or misinterpreted, it can be very difficult to unlearn what we thought was true. Complexity further increases if unconfirmed findings have been used to inform guidelines. To help achieve a balance between early access to research findings and its negative consequences, we formulated five recommendations: (a) consensus should be sought on a term clearer than \u27pre-print\u27, such as \u27Unrefereed manuscript\u27, Manuscript awaiting peer review or \u27\u27Non-reviewed manuscript ; (b) Caveats about unrefereed manuscripts should be prominent on their first page, and each page should include a red watermark stating \u27Caution-Not Peer Reviewed\u27; (c) pre-print authors should certify that their manuscript will be submitted to a peer-review journal, and should regularly update the manuscript status; (d) high level consultations should be convened, to formulate clear principles and policies for the publication and dissemination of non-peer reviewed research results; (e) in the longer term, an international initiative to certify servers that comply with good practices could be envisaged

    Conflicting perspectives on urban landscape quality in six urban regions in Europe and their implications for urban transitions

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    The European Landscape Convention urges countries to involve stakeholders including citizens in the governance of ordinary (urban) landscapes. This paper studies conflicting stakeholder perspectives on urban landscape quality in the context of urban sustainability transitions in six European urban regions in the Netherlands, Italy, France, Croatia, Belarus and the Russian Federation. Repertory grid technique helped to identify the dimensions through which persons evaluate urban landscape quality. Ninety-three (93) interviewees elicited 1400 bipolar constructs, such as "Edible green - Concrete" or "Community, group - Loneliness". They then selected two constructs they consider most relevant in the context of urban sustainability transitions, and ranked all pictures on a 10-points scale. The rankings were analyzed using Multiple Correspondence Analysis. We find that, in spite of the many social and cultural differences between the regions, stakeholders largely agree on the preferred direction of urban transitions; more green and blue spots where people can meet and undertake joint (leisure) activities. The main conflict is between, on the one hand, a preference for organized development and beautification and, on the other hand, naturalness (permeability of soil) and organic development. The paper considers several challenges for transition governance

    Sentinels of Seabed (SoS) indicator: Assessing benthic habitats condition using typical and sensitive species

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    Indicators are key tools used to assess the ecological status of the environment for ecosystem based management. Anthropogenic disturbances produce changes to habitat condition, which include modifications in species composition and their functions. Monitoring a group of sentinel species (from a taxonomic and functional point of view) provides useful insights into benthic habitat condition. Here, a new indicator, Sentinels of the Seabed (SoS) is proposed to assess state of benthic habitats using “sentinel” species (species which are characteristic of a habitat and sensitive to a given pressure). The selection of these sentinel species has two stages. First, a ‘typical species set’ is computed using intra-habitat similarity and frequency under reference conditions. Second, the ‘sentinel species set’ is generated by selecting the most sensitive species from the typical species set. This selection is made using specific indexes able to assess species sensitivity to a particular pressure. The SoS indicator method was tested on six case studies and two different pressure types (trawling disturbance and pollution), using data from otter trawl, box-corer and Remote Operate Vehicle images. In each scenario, the SoS indicator was compared to the Shannon-Wiener diversity index, Margalef index and total biomass, being the only metric, which showed the expected significant negative response to pressure in all cases. Our results shows that SoS was highly effective in assessing benthic habitats status under both physical and chemical pressures, regardless of the sampling gear, the habitat, or the case study, showing a great potential to be a useful tool in the management of marine ecosystems.Versión del editor2,69

    Uso da tecnologia assistiva na vida cotidiana de indivíduos com deficiências / Use of assistive technology in the everyday life of individuals with disabilities

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    As pessoas com deficiências enfrentam dificuldades diárias e as tecnologias assistivas estão surgindo com a intenção de proporcionar melhora nas condições de vida diária desses sujeitos, cabe saber se oferecem realmente o que as pessoas com deficiência precisam no seu dia a dia. Trata-se de uma pesquisa bibliográfica foi realizada através do PubMed (MEDLINE), Scielo, Google Scholar, no idioma português e inglês, sem limite estipulado para ano de publicação. A estratégia de busca foi elaborada com base no sistema PICOS, utilizando as seções “PIS”, com delimitação de população (pessoas com deficiência), intervenção (tecnologia assistiva), e setting de revisão sistemática. Foram analisados os 12 artigos elencados e foi verificado que os autores tiveram a preocupação de validar as TA para atender às pessoas com deficiência, mas nenhum trabalho enfatizou a melhoria de qualidade de vida desses sujeitos através da utilização de algum dispositivo de TA.Acredita-se que este estudo possa vir a auxiliar pesquisas futuras e servir de subsídio e aprofundamento sobre a temática Tecnologia Assistiva na colaboração da melhora da qualidade de vida e independência funcional para as pessoas com deficiência no seu cotidiano

    Terminología básica de conservación y restauración del Patrimonio Cultural 3. Español - Inglés - Francés - Italiano - Alemán - Portugués.

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    Versión 2018 Ampliación con portugués del PIMCD 2016 Glosario de 80 términos fundamentales de conservación y restauración del patrimonio cultural, con sus definiciones, imágenes ilustrativas, y traducción a inglés, francés, italiano y alemán, siguiendo las más recientes normativas y documentos internacionales
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