816 research outputs found

    FDI and Trade in Portugal: a gravity analysis

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    This study investigates the relation between the stock of foreign direct investment (FDI) and the geographical pattern of trade flows in the Portuguese economy. The gravity model is applied to bilateral trade between Portugal and OECD countries plus Brazil from 1998 to 2000. The stock of inward FDI is positively related to trade suggesting the existence of complementary between the two. This effect is stronger on exports than on imports resulting in a positive impact on trade balance. It is also found that the stock of outward FDI has no significant relation either with Portuguese exports or imports. Finally, FDI helps to explain the above “normal” exports to the EU and the below “normal” imports from Candidate Countries.International Trade, Foreign Direct Investment, Gravity Model.

    Mapeamento de processos como ferramenta para a gestao da informaçao

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    Orientador: Ligia KraemerMonografia(Graduaçao) - Universidade Federal do Paraná,Setor de Ciencias Sociais Aplicadas, Curso de Gestao da Informaça

    Olhar-se e Tocar-se, Olhar e Tocar, Ser Olhado e Ser Tocado: subversão das categorias binárias em "Mulher no Espelho", de Helena Parente Cunha e "Las Ninfas a Veces Sonríen", de Ana Clavel

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    Mulher no Espelho (HELENA PARENTE CUNHA 1985) and Las Ninfas a Veces Sonríen (ANA CLAVEL, 2013), are works that, despite having great thematic and formal differences, in addition to belonging to specific socio-historical contexts, contain significant affinities that allow a fruitful comparative reading. First, by the fact that both literary works fragment the narrative as well as the autobiographical subject, pillars of the autobiographical fiction, a literary subgenre which these novels simultaneously adopt and subvert. Secondly, for the central position episodes of autoeroticism occupy in both narratives, events which are either accompanied or preceded by self-contemplative scenes in front of the mirror, occurrences which I interpret as allegories of the fragmentation of the subject and the narrative form mentioned above. That said, in this work I argue that the perspective presented in the scenes of autoeroticism in front of the mirror is exemplary of the consequent duplication/multiplication of the subject and the narrative, contaminating the entire story and destabilizing not only a possible unique writing but also a unique reading, ending up also affecting the reader.Mulher no Espelho (HELENA PARENTE CUNHA, 1985) e Las Ninfas a Veces Sonríen (ANA CLAVEL, 2013) são obras que, apesar de apresentarem grandes diferenças temáticas e formais e pertencerem a contextos sócio-históricos particulares, contêm afinidades significativas que permitem uma frutífera leitura comparativa. Primeiramente, pelo fato de que ambas fragmentam tanto a narrativa quanto o sujeito autobiográfico, pilares da ficção autobiográfica, subgênero literário o qual esses romances adotam ao mesmo tempo que subvertem. Em segundo lugar, pelo destaque que ambas as narrativas dão aos episódios de autoerotismo, os quais vêm ora acompanhados de ora precedidos por cenas autocontemplativas em frente ao espelho, cenas as quais interpreto aqui como alegorias da fragmentação do sujeito e da forma narrativa mencionada acima. Dito isso, nesse trabalho defende-se o ideia de que a perspectiva apresentada nas cenas de autoerotismo frente ao espelho é exemplar da consequente duplicação/multiplicação do sujeito e da narrativa, contaminando todo o relato e desestabilizando não só uma possível escrita única como também uma leitura única, acabando, assim, por afetar também o leitor

    Spectacle, biopower, performativity: a cluster of regulatory powers in action in Joe Wright’s “Nosedive”

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    By employing the episode “Nosedive” by Joe Wright as the object of study, this article aims to demonstrate how the concepts of spectacle, biopower and gender performativity form a causal chain, with the society of the spectacle presenting itself as a favorable sociocultural context for the practice of biopower, which, in turn, would reinforce gender-specific technologies of power, thereby stiffening and restricting the possibilities for expression of dissident gender identities. When carried out on the materiality of the body, these control and surveillance strategies become intertwined, forming a cluster of regulatory powers that are difficult to differentiate

    How Executive Functions Are Evaluated in Children and Adolescents with Cerebral Palsy? A Systematic Review

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    Aims : The aim of the present study was to examine how executive functions are assessed in children and adolescents with Cerebral Palsy.Method : A systematic literature review was conducted using four bibliographic databases (WebScience, Scopus, PubMed, and Psycinfo), and only studies that evaluated at least one executive function were selected. Both the research and reporting of results were based on Cochrane's recommendations and PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines.Results : The instrument most frequently used was the D-KEFS. All studies point to the existence of impairments in the executive functions among children and adolescents with Cerebral Palsy with an impact on several cognitive and life domains.Interpretation : There is a need to further systematize the research protocols to study the executive functions and their assessment in the intervention context. Findings of this review presented a diversity of tests (e.g., D-KEFS) or tasks (e.g., The inhibitory ability task) used with children with Cerebral Palsy. However, no information was given about adaptations performed to the test/task to meet Cerebral Palsy's specificities. Future research could consider including this information, which is key both to researchers and practitioners. The results of this study have important implications and suggestions for future avenues and guidelines for research and practice.This study was conducted at Psychology Research Centre (UID/PSI/01662/2013), University of Minho, and supported by the Portuguese Foundation for Science and Technology and the Portuguese Ministry of Science, Technology and Higher Education through national funds and co-financed by FEDER through COMPETE2020 under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007653). AP and SL were supported by PhD fellowships from the Portuguese Foundation for Science and Technology. PM was supported by a Post-Doctoral fellowship from the Research Center on Psychology (CIPsi), School of Psychology, University of Minho.info:eu-repo/semantics/publishedVersio

    The development of occupational science outside the anglophone sphere: enacting global collaboration

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    También publicado en español.[Abstract] The emergence of occupational science in non-English speaking countries is frequently hampered by diverse barriers to global collaboration, knowledge dissemination, and inclusion in international dialogue. Epistemological, cultural, and institutional resources may explain these barriers, yet these have not been explored within the discipline. This paper discusses three main issues and three priorities for action put forward by participants during sessions held at two separate, international occupational science conferences. The sessions aimed to engage the audience in critical reflexivity and dialogue around the challenges present when non-English speaking countries attempt to develop occupational science scholarship and possible ways to support global collaboration. To stimulate discussion, we used a participatory methodology, ‘Metaplan’. The sessions included a statements exercise, reflections presented by the authors, individual reflexivity, and small group debate. The findings are structured as a reflexive dialogue where participants’ voices, theory, and the authors’ reflections are interwoven to enrich discussion of the issues participants identified and priorities for action. This paper contributes to decolonizing the development of occupational science and promoting an international dialogue that is open to diverse worldviews, by drawing attention to the visible and invisible barriers that limit collaboration and inclusion of the diverse ways in which occupation is understood and enacted worldwid

    Polimerização via radical livre para polimeros lineares e ramificados usando iniciadores mono e difuncional

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    Orientadora: Liliane Maria Ferrareso LonaDissertação (mestrado) - Universidade Estadual de Campinas. Faculdade de Engenharia QuimicaResumo: Iniciadores monofuncionais são largamente utilizados em polimerizações via radical livre. Muitas vezes, em busca de maiores rodutividades, utilizam-se temperaturas de operação elevadas, entretanto, obtém-se polímeros com pesos moleculares menores. O uso de iniciadores difuncionais permite o aumento da produtividade sem a redução no peso molecular do produto final, o que pode ser uma característica desejável. A pesquisa com iniciadores difuncionais é atual e de grande interesse industrial. O principal objetivo deste trabalho é o desenvolvimento de modelos matemáticos detalhados para a polimerização via radical livre usando iniciadores mono e difuncionais, considerando como caso de estudo um polímero linear (poliestireno) e um ramificado (poli acetato de vinila). Uma comparação entre os resultados de polímero linear e ramificado foi realizada uma vez que, até hoje, não foi desenvolvido um modelo matemático e nem foram realizados experimentos utilizando-se iniciadores difuncionais com polímeros ramificados. Os resultados das simulações, com exceção do caso polímero ramificado e iniciador difuncional, foram comparados com dados experimentais da literatura e apresentaram boa concordânciaAbstract: Monofunctional initiators are extensively used in free radical polymerization. In order to enhance productivity, usually higher operating temperature is used. However, this leads to low molecular weights. Bifunctional initiators increase the polymerization rate without decreasing the average molecular weight and this can be desirable. They are an important issue to be investigated and are of great interest to industries. The objective of this work is to develop comprehensive mathematical models to simulate polymerization reactors with mono- and bi-functional initiators, using monomers that will produce linear and branched polymers. Polystyrene as a linear polymer and poly(vinylacetate) as a branched polymer, will be considered. A comparison between the models will be done since there is neither mathematical model nor experimental data using both bifunctional initiator and branched polymer in the available literature. The simulation results (except for the case of branched polymer and bifunctional initiator) were compared with experimental data reported in literature, showing that a good agreement was obtained.MestradoDesenvolvimento de Processos QuímicosMestre em Engenharia Químic

    Investigation of free radical polymerization using trifunctional initiators

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    Orientador: Liliane Maria Ferrareso LonaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia QuimicaResumo: A utilização de iniciadores químicos com funcionalidade superior a um, na polimerização via radical livre, tem crescido muito no meio acadêmico, científico e industrial. Estes tipos de iniciadores têm a capacidade de aumentar a velocidade da reação sem causar a redução do peso molecular do polímero formado. Além disso, iniciadores com funcionalidade superior a dois (multifuncionais), que não sejam cíclicos, podem ter a capacidade de gerar ramificações nas cadeias, alterando a microestrutura do produto. Existem alguns poucos trabalhos em literatura que abordam, em nível experimental e/ou de simulação, a polimerização via radical livre utilizando-se iniciadores bifuncionais (com dois grupos funcionais). Em Machado (2004), encontram-se modelos matemáticos utilizando iniciadores bifuncionais para a produção de polímeros lineares (poliestireno) e ramificados (poliacetato de vinila), este último, inédito em literatura aberta. O grau de complexidade envolvido no mecanismo cinético aumenta de forma significativa à medida que se aumenta a funcionalidade do iniciador. O objetivo deste trabalho foi estudar a polimerização via radical livre utilizando um iniciador cíclico trifuncional (TRIGONOX 301, T301). Este trabalho foi desenvolvido em nível experimental (polimerização em ampolas) e computacional (desenvolvimento de modelo matemático, modelagem e simulação). Esta pesquisa propôs um mecanismo cinético e um modelo matemático para polimerização via radical livre do estireno utilizando um iniciador trifuncional. O estireno foi escolhido por ser bastante conhecido e por existir muitos dados e informações a seu respeito em literatura aberta. O modelo matemático construído prediz resultados como conversão, peso molecular (Mn e Mw), concentração de radicais e concentração de polímero. A investigação experimental foi realizada para validar os resultados de simulação. O método utilizado foi a polimerização em ampolas. Análises de Cromatografia por Permeação em Gel (GPC), Microscopia Eletrônica por Varredura (MEV), Difração por Raio-X (DRX) e Calorimetria Exploratória Diferencial (DSC) foram realizadas nas amostras obtidas experimentalmente para uma melhor caracterização do polímero final. As validações foram feitas para os resultados de conversão e peso molecular. Os resultados obtidos na parte experimental foram de extrema importância para se obter a validação da parte de modelagem e simulação, bem como para se poder conhecer o comportamento do iniciador trifuncional T301. O modelo de predição apresentou boa concordância com os dados experimentais. Através de seu uso, pode-se explorar a reação de polimerização, podendo verificar o comportamento das várias espécies nela presentes. Além disso, pode-se também estudar os efeitos de algumas variáveis como a temperatura e a concentração de iniciador durante a reação de polimerização e também no produto final. Este estudo se apresenta como uma investigação abrangente da polimerização usando um iniciador trifuncional, fornecendo uma ferramenta que pode simular com confiabilidade a polimerização do estireno via radical livre e, também, apresentando outros tipos de análise que podem ser realizadas no polímero final obtido. Deve-se destacar que através do uso do iniciador trifuncional T301, houve a possibilidade de obtenção de poliestirenos com altos pesos moleculares, simultaneamente com reduzidas polidispersidades (curvas de distribuição de peso molecular estreitas), a altas temperaturas e, como conseqüência, com elevadas taxas de reação.Abstract: Researchers from industries and universities have investigated the use of initiators with functionality greater than one, in free radical polymerization. These types of initiators are able to increase the polymerization reaction rate with no decrease in molecular weight. Besides, initiators with functionality greater than two (multifunctional initiators), those that do not have a cyclic structure, are able to generate branches in the polymer chains, changing the product microstructure. Experimental studies of initiators with functionality greater than two in free radical polymerization are very few and the modeling of such systems is really scarce. The complexity of the kinetic mechanism increases with the increasing of the initiator functionality. Machado (2004) presents mathematical models using mono- and bifunctional initiators in free radical polymerization of linear (polystyrene) and branched (poly vinyl acetate) polymers. This last case is brand new in open literature. The objective of this work was to study free radical polymerization using a trifunctional cyclic initiator (TRIGONOX 301, T301). This work was developed in experimental level (polymerization in ampoules) and in computational level (development of mathematical model, modeling and simulation). This research proposed a kinetic mechanism and developed a mathematical model to free radical polymerization of styrene using a trifunctional initiator. Styrene was chosen because it is a very well known monomer and there is a lot of data about it. The mathematical model built predicts results as conversion, molecular weight (number average, Mn, and weight average, Mw), radical concentration and polymer concentration profiles. An experimental investigation was also made in order to validate the simulation results. The experimental part followed the method of polymerization in ampoules. The following analyses were performed to characterize the samples of polymers obtained experimentally: Gel Permeation Cromatography (GPC), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC). The validation was made to conversion and molecular weights. The experimental results were very important to validate the model and also to investigate the behavior of the trifunctional initiator T301. Model simulations showed good agreement with experimental data. Simulations could explore the polymerization reaction, verifying the behavior of all species present in it. Also, it was possible to study the effects of some variables as temperature and initiator concentration during the reaction and in the final product. This study is a comprehensive investigation of a reaction using a trifunctional initiator, providing a model that simulates accurately the free radical polymerization of styrene and, also, presenting types of different analysis that can be done in the final polymer. It should be noted that the use of the trifunctional initiator T301 in free radical polymerization brought the possibility of obtaining polystyrenes with high molecular weights, simultaneously with reduced polydispersities (narrower MWD profiles), at high temperatures and, as a consequence, at high reaction rates.DoutoradoDesenvolvimento de Processos QuímicosDoutor em Engenharia Químic

    Effect of osmotic drying on physicochemical properties of pansies (Viola × wittrockiana)

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    The objective of this work was to study the e ect of osmotic drying, using di erent hypertonic solutions (sucrose and sodium chloride), on physicochemical characteristics of pansies (Viola Ö wit- trockiana). The same treatments were applied to lettuce to compare the behavior of owers with other vegetables. Pansies' superhydrophobic surface structure, called papillae, increased the resistance to exchanges with hypertonic solutions. No weight loss was observed after most treatments (sucrose: between 2.2 and 6.8 %; NaCl: between -23.0 % and 1.5 %), aw maintained high values (> 0,94) and monomeric anthocyanins were preserved (fresh 0.10 and 0.19 mg Cy-3glu/g fresh matter for 20%/1 h in NaCl and 60%/1 h in sucrose). When applying more drastic conditions, as sodium chloride for more than 1 hour, undesirable textural and color changes were observed. For lettuce, all treatments caused osmotic dehydration, weight loss (ranged between -9.3 to -30.3 % for 80%/1 h in sucrose and 15%/1 h in NaCl) and a reduction in aw (< 0,97) and carotenoids, with sodium chloride causing more damage in visual appearance than sucrose. Therefore, immersion in osmotic solutions can be applied to lettuce but the desired e ect was not achieved for pansies due to the morphological structure of the owers' epidermis.The authors acknowledge the Portuguese Foundation for Science and Technology (FCT, Portugal) for the financial support provided by the research grant SFRH/BD/95853/2013 and FCT/MCT for the financial support to QOPNA research Unit (FCT UID/QUI/00062/2019), through national funds and where applicable co- financed by the FEDER, within the PT2020 Partnership Agreement, to the Portuguese NMR Network and to REQUIMTE through the Project PEst/UID/QUI/50006/2013. The authors are also grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2019).info:eu-repo/semantics/publishedVersio
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