1,601 research outputs found

    Distortion of the acoustic peaks in the CMBR due to a primordial magnetic field

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    In this paper we study the effect of a magnetic field on the fluctuation spectrum of the cosmic microwave background. We find that upcoming measurements might give interesting bounds on large scale magnetic fields in the early Universe. If the effects are seen, it might be possible to establish the presence of different fields in different patches of the sky. Absence of any effect, will provide by one order of magnitude a better limit for a primordial field, now given by nucleosynthesis.Comment: 10 pages, 2 .ps figures included, extra reference added and typographical errors correcte

    Ariel - Volume 4 Number 3

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    Editors David A. Jacoby Eugenia Miller Tom Williams Associate Editors Paul Bialas Terry Burt Michael Leo Gail Tenikat Editor Emeritus and Business Manager Richard J. Bonnano Movie Editor Robert Breckenridge Staff Richard Blutstein Mary F. Buechler Steve Glinks Len Grasman Alice M. Johnson J.D. Kanofsky Tom Lehman Dave Mayer Bernie Odd

    Perspectives on family caregiving of people aging with intellectual disability affected by dementia: Commentary from the International Summit on Intellectual Disability and Dementia

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    This article, an output of the 2016 International Summit on Intellectual Disability and Dementia, examines familial caregiving situations within the context of a support-staging model for adults with intellectual disability (ID) affected by dementia. Seven narratives offer context to this support-staging model to interpret situations experienced by caregivers. The multi-dimensional model has two fundamental aspects: identifying the role and nature of caregiving as either primary (direct) or secondary (supportive); and defining how caregiving is influenced by stage of dementia. We propose staging can affect caregiving via different expressions: (1) the ‘diagnostic phase’, (2) the ‘explorative phase’, (3) the ‘adaptive phase’, and (4) the ‘closure phase’. The international narratives illustrate direct and indirect caregiving with commonality being extent of caregiver involvement and attention to the needs of an adult with ID. We conclude that the model is the first to empirically formalise the variability of caregiving within families of people with ID that is distinct from other caregiving groups, and that many of these caregivers have idiosyncratic needs. A support-staging model that recognises the changing roles and demands of carers of people with intellectual disability and dementia can be useful in constructing research, defining family-based support services, and setting public policy

    Using videogames to improve molecular graphics tools

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    Well-designed videogames provide intuitive and engaging ways of understanding and interacting with highly complex systems. The aim of this study was to explore the use of videogames as a lens for the design of bioinformatics visualisation tools, with a particular focus on molecular graphics systems designed to explore 3D structures of proteins. We conducted a workshop bringing together experts in game design, molecular biology, data visualisation, and software development, to explore how videogame expertise could inform the design of the protein visualisation tool, Aquaria. Results of the workshop suggest that games could influence the design of tutorials for new users, the nature of the interaction within a 3D space, and act as a mechanism for engaging users in crowd- sourced tasks
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