3,309 research outputs found
Multilingual Lexical Semantic Resources for Ontology Translation
We describe the integration of some multilingual language resources in ontological descriptions, with the purpose of providing ontologies, which are normally using concept labels in just one (natural) language, with multilingual facility in their design and use in the context of Semantic Web applications, supporting both the semantic annotation of textual documents with multilingual ontology labels and ontology extraction from multilingual text sources
Gipsy 3D: Analysis, Visualization and Vo-Tools
The scientific goals of the AMIGA project are based on the analysis of a
significant amount of spectroscopic 3D data. In order to perform this work we
present an initiative to develop a new VO compliant package, including present
core applications and tasks offered by the Groningen Image Processing System
(GIPSY), and new ones based on use cases elaborated in collaboration with ad-
vanced users. One of the main goals is to provide local interoperability
between GIPSY (visualization and data analysis) and other VO software. The
connectivity with the Virtual Observatory environment will provide general
access to 3D data VO archives and services, maximizing the potential for
scientific discovery.Comment: 2 pages, 1 figure, to appear in the proceedings of the
"Multi-wavelength Astronomy and Virtual Observatory" Workshop held at ESAC
1-3 Dec 200
Building a VO-compliant Radio Astronomical DAta Model for Single-dish radio telescopes (RADAMS)
The Virtual Observatory (VO) is becoming the de-facto standard for
astronomical data publication. However, the number of radio astronomical
archives is still low in general, and even lower is the number of radio
astronomical data available through the VO. In order to facilitate the building
of new radio astronomical archives, easing at the same time their
interoperability with VO framework, we have developed a VO-compliant data model
which provides interoperable data semantics for radio data. That model, which
we call the Radio Astronomical DAta Model for Single-dish (RADAMS) has been
built using standards of (and recommendations from) the International Virtual
Observatory Alliance (IVOA). This article describes the RADAMS and its
components, including archived entities and their relationships to VO metadata.
We show that by using IVOA principles and concepts, the effort needed for both
the development of the archives and their VO compatibility has been lowered,
and the joint development of two radio astronomical archives have been
possible. We plan to adapt RADAMS to be able to deal with interferometry data
in the future.Comment: 28 pages, 8 figures, 18 tables, to be published in Experimental
Astronomy (Springer
Halogen Bonds in Clathrate Cages: A Real Space Perspective
We thank the Spanish MINECO, grant CTQ2015-65790-P, and theFICYT, gran
État des connaissances de la diversité floristique de l’archipel de Zembra (Nord-Est de la Tunisie)
Comparazione tra la flora vascolare delle isole di Lampione e Zembretta
Viene presentata una comparazione tra la flora vascolare dell'isola di Lampione (Italia) e quella di Zembretta (Tunisia) entrambe estese circa 2 ettari e ricadenti nello stretto di Sicili
Effects of the environment on galaxies in the Catalogue of Isolated Galaxies: physical satellites and large scale structure
We aim to identify and quantify the effects of the satellite distribution
around a sample of galaxies in the Catalogue of Isolated Galaxies (CIG), as
well as the effects of the Large Scale Structure (LSS) using the SDSS-DR9. To
recover the physically bound galaxies we focus on the satellites which are
within the escape speed of each CIG galaxy. We also propose a more conservative
method using the stacked Gaussian distribution of the velocity difference of
the neighbours. The tidal strengths affecting the primary galaxy are estimated
to quantify the effects of the local and LSS environments. We also define the
projected number density parameter at the 5 nearest neighbour to
characterise the LSS around the CIG galaxies. Out of the 386 CIG galaxies
considered in this study, at least 340 (88\% of the sample) have no physically
linked satellite. Out of the 386 CIG galaxies, 327 (85\% of the sample) have no
physical companion within a projected distance of 0.3 Mpc. The CIG galaxies are
distributed following the LSS of the local Universe, although presenting a
large heterogeneity in their degree of connection with it. A clear segregation
appears between early-type CIG galaxies with companions and isolated late-type
CIG galaxies. Isolated galaxies are in general bluer, with likely younger
stellar populations and rather high star formation with respect to older,
redder CIG galaxies with companions. Reciprocally, the satellites are redder
and with an older stellar populations around massive early-type CIG galaxies,
while they have a younger stellar content around massive late-type CIG
galaxies. This suggests that the CIG is composed of a heterogeneous population
of galaxies, sampling from old to more recent, dynamical systems of galaxies.Comment: 19 pages, 10 figures, 1 table, accepted for publication in Astronomy
& Astrophysic
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