23 research outputs found
04491 Abstracts Collection -- Synchronous Programming - SYNCHRON\u2704
From 28.11.04 to 03.12.04, the Dagstuhl Seminar Perspectives Workshop 04491
``Synchronous Programming - SYNCHRON\u2704\u27\u27 was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl.
During the seminar, several participants presented their current
research, and ongoing work and open problems were discussed. Abstracts of
the presentations given during the seminar as well as abstracts of
seminar results and ideas are put together in this paper. The first section
describes the seminar topics and goals in general.
Links to extended abstracts or full papers are provided, if available
The stories we tell: uncanny encounters in Mr Straw’s house
During my first visit to Mr Straw’s House, a National Trust Property in the North of England, I was intrigued by the discrepancies between the narrative framework provided by the National Trust – its exclusions, silences and invisibilities – and the far more complex stories the house seemed to tantalisingly hint at. As a scholar I am drawn to certain sites and affectively engage with them and yet I usually keep silent about my investment which informs not only my interest but also how I read these heritage sites. My aim here is not primarily to interrogate my own investment, but to ask how productive it is, what it enables me to see and to describe and where its limits are. This case study explores a particular tourist attraction from the perspective of storytelling and asks what narratives can be constructed around, and generated through, the spatial-emotional dimensions of this heritage site. I am interested in the hold sites have over people, why and how they provoke imaginative and empathic investment that generates a network of stories and triggers processes of unravelling which have the potential to transform silences and unmetabolised affect into empathy and emotional thought
04491 Executive Summary -- Synchronous Programming - SYNCHRON\u2704
This seminar was the 11th in a series of semi-annual workshops on the
Synchronous Languages (Esterel, Lustre, and Signal). These languages
were invented in the early 1980\u27s to make the programming of reactive
systems easier. The goal of the seminar was to bring together researchers and
practitioners of synchronous programming, and furthermore to reach out
to relevant related areas and industrial users
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Gaia Data Release 1: Open cluster astrometry: Performance, limitations, and future prospects
© 2017 ESO. Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry, the proper motion and parallax are calculated using Hipparcos and Tycho-2 positions in 1991.25 as prior information. Aims. We investigate the scientific potential and limitations of the TGAS component by means of the astrometric data for open clusters. Methods. Mean cluster parallax and proper motion values are derived taking into account the error correlations within the astrometric solutions for individual stars, an estimate of the internal velocity dispersion in the cluster, and, where relevant, the effects of the depth of the cluster along the line of sight. Internal consistency of the TGAS data is assessed. Results. Values given for standard uncertainties are still inaccurate and may lead to unrealistic unit-weight standard deviations of least squares solutions for cluster parameters. Reconstructed mean cluster parallax and proper motion values are generally in very good agreement with earlier Hipparcos-based determination, although the Gaia mean parallax for the Pleiades is a significant exception. We have no current explanation for that discrepancy. Most clusters are observed to extend to nearly 15 pc from the cluster centre, and it will be up to future Gaia releases to establish whether those potential cluster-member stars are still dynamically bound to the clusters. Conclusions. The Gaia DR1 provides the means to examine open clusters far beyond their more easily visible cores, and can provide membership assessments based on proper motions and parallaxes. A combined HR diagram shows the same features as observed before using the Hipparcos data, with clearly increased luminosities for older A and F dwarfs