988 research outputs found

    Speech and language difficulties in children with and without a family history of dyslexia

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    Comorbidity between SLI and dyslexia is well documented. Researchers have variously argued that dyslexia is a separate disorder from SLI, or that children with dyslexia show a subset of the difficulties shown in SLI. This study examines these hypotheses by assessing whether family history of dyslexia and speech and language difficulties are separable risk factors for literacy difficulties. Forty-six children with a family risk of dyslexia (FRD) and 36 children receiving speech therapy (SLT) were compared to 128 typically developing children. A substantial number (41.3%) of the children with FRD had received SLT. The nature of their difficulties did not differ in severity or form from those shown by the other children in SLT. However, both SLT and FRD were independent risk factors in predicting reading difficulties both concurrently and 6 months later. It is argued that the results are best explained in terms of Pennington's (2006) multiple deficits model

    SILAE special issue: Italo-latin american ethnoknowledge and research on medicinal plants

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    Ethnomedicine (SILAE, www.silae.it) is an international non-profit organization dedicated to advancing science around the world by serving as an educator, leader, spokesperson and professional association. The fundamental objective of SILAE is to promote research and development into the use of medicinal and food plants in different countries of the World. SILAE welcomes and actively seeks opportunities to work cooperatively, activating and intensifying scientific relations between countries and between SILAE members. Since SILAE was founded (1990) its objective has been set to contribute to the close examination of the themes of great interest and actuality in the context of the relationships between Latin America and the European Union. In addition to this, SILAE aimed to individualize new ways of collaboration between its member countries and other European as well as Asiatic countries to sign accords with intergovernmental organizations. SILAE proposes to establish contacts with Scientific Communities, Universities, and Research Centres for the pursuit of medicinal and food plants knowledge. Moreover SILAE_live, the one-to-one live Chat and Messenger on our website (www.silae.it), is the first scientific chat on the web and is a developed tool to engage the interest and imagination of the public and for helping nonscientists to understand and enjoy scientific discoveries and the scientific processes. In addition to organizing membership activities, SILAE publishes the SILAE Special Issues, as well as many scientifi c newsletters, books and reports, and spearheads programs that raise the bar of understanding for science worldwide. Revista Brasileira de Farmacognosia Brazilian Journal of Pharmacognosy is publishing a special issue that contains a selection of papers that were presented at the XIX SILAE Congress (Cagliari, Italy, September, 6-10, 2010). For the Conference, 292 SILAE Special Issue: Italo-Latin American Ethnoknowledge and Research on Medicinal Plant

    Stochastic evaluation of sewer inlet capacity on urban pluvial flooding

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    In this paper we present an innovative methodology to stochastically assess the impact of sewer inlet conditions on urban pluvial flooding. The results showed that sewer inlet capacity can have a large impact on the occurrence of urban pluvial flooding. The methodology is a useful tool for dealing with uncertainties in sewer inlet operational conditions and contribute to comprehensive assessment of urban pluvial risk assessment

    Performance Limits of Monolayer Transition Metal Dichalcogenide Transistors

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    The performance limits of monolayer transition metal dichalcogenide transistors are examined with a ballistic MOSFET model. Using ab-initio theory, we calculate the band structures of two-dimensional (2D) transition metal dichalco-genide (MX2). We find the lattice structures of monolayer MX2 remain the same as the bulk MX2. Within the ballistic regime, the performances of monolayer MX2 transistors are better compared to the silicon transistors if thin high-{\kappa} gate insulator is used. This makes monolayer MX2 promising 2D materials for future nanoelectronic device applications

    Rolling Adjoints: Fast Greeks along Monte Carlo scenarios for early-exercise options

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    In this paper we extend the Stochastic Grid Bundling Method (SGBM), a regress-later Monte Carlo scheme for pricing early-exercise options, with an adjoint method to compute in a highly efficient manner the option sensitivities (the “Greeks”) along the Monte Carlo paths, with reasonable accuracy. The path-wise SGBM Greeks computation is based on the conventional path-wise sensitivity analysis, however, for a regress-later technique. The resulting sensitivities at the end of the monitoring period are implicitly rolled over into the sensitivities of the regression coefficients of the previous monitoring date. For this reason, we name the method Rolling Adjoints, which facilitates Smoking Adjoints [M. Giles, P. Glasserman, Smoking adjoints: fast Monte Carlo Greeks, Risk 19 (1)(2006)88–92] to compute conditional sensitivities along the paths for options with early-exercise features

    Rolling Adjoints: Fast Greeks along Monte Carlo scenarios for early-exercise options

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    In this paper we extend the stochastic grid bundling method (SGBM), a regress-later based Monte Carlo scheme for pricing early-exercise options, with an adjoint method to compute in a highly efficient manner sensitivities along the paths, with reasonable accuracy. With the ISDA standard initial margin model being adopted by the financial markets, computing sensitivities along scenarios is required to compute quantities like the margin valuation adjustment
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