346 research outputs found

    Reevaluating Assembly Evaluations with Feature Response Curves: GAGE and Assemblathons

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    In just the last decade, a multitude of bio-technologies and software pipelines have emerged to revolutionize genomics. To further their central goal, they aim to accelerate and improve the quality of de novo whole-genome assembly starting from short DNA reads. However, the performance of each of these tools is contingent on the length and quality of the sequencing data, the structure and complexity of the genome sequence, and the resolution and quality of long-range information. Furthermore, in the absence of any metric that captures the most fundamental "features" of a high-quality assembly, there is no obvious recipe for users to select the most desirable assembler/assembly. International competitions such as Assemblathons or GAGE tried to identify the best assembler(s) and their features. Some what circuitously, the only available approach to gauge de novo assemblies and assemblers relies solely on the availability of a high-quality fully assembled reference genome sequence. Still worse, reference-guided evaluations are often both difficult to analyze, leading to conclusions that are difficult to interpret. In this paper, we circumvent many of these issues by relying upon a tool, dubbed FRCbam, which is capable of evaluating de novo assemblies from the read-layouts even when no reference exists. We extend the FRCurve approach to cases where lay-out information may have been obscured, as is true in many deBruijn-graph-based algorithms. As a by-product, FRCurve now expands its applicability to a much wider class of assemblers -- thus, identifying higher-quality members of this group, their inter-relations as well as sensitivity to carefully selected features, with or without the support of a reference sequence or layout for the reads. The paper concludes by reevaluating several recently conducted assembly competitions and the datasets that have resulted from them.Comment: Submitted to PLoS One. Supplementary material available at http://www.nada.kth.se/~vezzi/publications/supplementary.pdf and http://cs.nyu.edu/mishra/PUBLICATIONS/12.supplementaryFRC.pd

    Inhibitory mechanisms in the LGN: A possible substrate for amblyopia?

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    Inhibitory mechanisms in the LGN: A possible substrate for amblyopia

    Autism and children: diagnosis, functional profiles and intervention

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    In the last forty years, approaches to and the social perception of autism have changed significantly [...

    Patient centric intervention for children with high functioning autism spectrum disorder. Can ICT solutions improve the state of the art ?

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    In my PhD research we developed an integrated technological platform for the acquisition of neurophysiologic signals in a semi-naturalistic setting where children are free to move around, play with different objects and interact with the examiner. The interaction with the examiner rather than with a screen is another very important feature of the present research, and allows recreating a more real situation with social interactions and cues. In this paradigm, we can assume that the signals acquired from the brain and the autonomic system, are much more similar to what is generated while the child interacts in common life situations. This setting, with a relatively simple technical implementation, can be considered as one step towards a more behaviorally driven analysis of neurophysiologic activity. Within the context of a pilot open trial, we showed the feasibility of the technological platform applied to the classical intervention solutions for the autism. We found that (1) the platform was useful during both children-therapist interaction at hospital as well as children-parents interaction at home, (2) tailored intervention was compatible with at home use and non-professional therapist/parents. Going back to the title of my thesis: 'Can ICT solution improve the state-of-the-art ?' the answer could be: 'Yes it can be an useful support for a skilled professional in the field of autis

    The social effect of "being imitated" in children with autism spectrum disorder

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    There is evidence that "being imitated" has social effects, and that the imitation of the child's actions may be used as a strategy to promote social engagement in children with autism spectrum disorder (ASD). The observation of someone that imitates us recruits, indeed, neural areas involved in social cognition. We reviewed studies exploring the behavioral consequences of "being imitated" in children with ASD. We aimed at assessing what are the social skills targeted by this strategy, and the factors that may improve the response. The "being imitated" strategy improves social gazes, proximal social behaviors, and play skills, particularly in children with low developmental level, and also when the strategy is implemented by children's mothers. The "being imitated" may be used as a tool in early intervention to improve social skills, helping to assess the effects of intervention at both behavioral and neural level

    Creating Community and Belonging in a Designated Housing Estate for Disabled People

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    In recent years there has been an ideological push within social care away from segregated housing provision towards supported housing integrated within the wider community (McConkey, Keogh, Bunting, Iriarte, & Watson, 2016; Merrells, Buchanan, & Waters, 2019; Overmars-Marx, Thomése, Verdonschot, & Meininger, 2014). Despite this, many housing solutions for older and disabled people continue to be built on a designated basis, with physical and emotional wellbeing outcomes being both contested and mixed. After reviewing key policy relating to social care housing alongside some of the theoretical and ideological positions, this article explores the social and emotional outcomes of a diverse group of disabled people living with mental health difficulties, physical and intellectual impairments, illnesses and age-related conditions, who moved into a small, purpose-built estate of smart homes. Drawing primarily on qualitative data collected from tenants prior to moving and again seven months following relocation, the impact of moving into the estate on tenants’ sense of wellbeing and feelings of inclusion will be analysed and discussed in relation to efforts to build a new community

    How attention to faces and objects changes over time in toddlers with autism spectrum disorders: Preliminary evidence from an eye tracking study

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    Further understanding of the longitudinal changes in visual pattern of toddlers with autism spectrum disorders (ASDs) is needed. We examined twelve 19 to 33-month-old toddlers at their first diagnosis (mean age: 25.1 months) and after six months (mean age: 31.7 months) during two initiating joint attention (IJA) tasks using eye tracking. Results were compared with the performance of age-matched typically developing (TD) toddlers evaluated at a single time-point. Autistic toddlers showed longitudinal changes in the visual sensory processing of the IJA tasks, approaching TD performance with an improvement in the ability to disengage and to explore the global space. Findings suggest the use of eye tracking technology as an objective, non-intrusive, adjunctive tool to measure outcomes in toddlers with ASD
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