We propose here the method called ISM -Incremental Structure Mappingwhich allows one to convert XML documents from heterogeneous sources to a mediated schema. Unlike existing methods, ISM is document centric and takes into account both the structural information and the content information. It does not need to specify manually correspondences between schema and is based on Machine Learning meth...

A model of ‘integrated scientific method’ (ISM) was constructed as a framework for describing the process of science in terms of activities (formulating a research problem, and inventing and evaluating actions — such as selecting and inventing theories, evaluating theories, designing experiments, and doing experiments — intended to solve the problem) and evaluation criteria (empirical, conceptu...

Far Ultraviolet Spectroscopic Explorer observations are presented for WD0621−376, a DA white dwarf star in the local interstellar medium (LISM) at a distance of about 78 pc. The data have a signal-tonoise ratio of ∼20–40 per 20 km s resolution element and cover the wavelength range 905–1187 Å. LISM absorption is detected in the lines of D I, C II, C II*, C III, N I, N II, N III, O I, Ar I, and ...

The first observations of the infrared spectrum of the LMC planetary nebula SMP 83 as observed by the recently launched Spitzer Space Telescope are presented. The high-resolution (R 600) spectrum shows strong emission lines but no significant continuum. The infrared fine-structure lines are used, together with published optical spectra, to derive the electron temperature of the ionized gas for ...

The largest noncyclic molecules detected in the interstellar medium (ISM) are organic with a straight-chain carbon backbone. We report an interstellar detection of a branched alkyl molecule, iso-propyl cyanide (i-C3H7CN), with an abundance 0.4 times that of its straight-chain structural isomer. This detection suggests that branched carbon-chain molecules may be generally abundant in the ISM. Ou...

Vortices have been postulated at a range of size scales in the universe including at the stellar size-scale. Whilst hydrodynamically simulating the wind from an asymptotic giant branch (AGB) star moving through and sweeping up its surrounding interstellar medium (ISM), we have found vortices on the size scale of 10 pc to 10 pc in the wake of the star. These vortices appear to be the result of i...

We use the results of magnetohydrodynamic (MHD) simulations to emulate spectroscopic observations and produce maps with variations of velocity centroids to study their scaling properties. In order to assess under which circumstances the scaling properties of the velocity field can be retrieved from velocity centroids, we compare two point statistics of velocity centroids with those of the under...

We present new high resolution neutral hydrogen (H i) images of the Galactic supershell GSH 242-03+37. These data were obtained with the Parkes Radiotelescope as part of the Galactic All-Sky Survey (GASS). GSH 242-03+37 is one of the largest and most energetic H i supershells in the Galaxy with a radius of 565 ± 65 pc and an expansion energy of 3 × 10 ergs. Our images reveal a complicated shell...

We study, by means of adaptive mesh refinement hydroand magnetohydrodynamical simulations that cover a wide range of scales (from kpc to sub-parsec), the dimension of the most dissipative structures and the injection scale of the turbulent interstellar gas, which we find to be about 75 pc, in agreement with observations. This is however smaller than the average size of superbubbles, but consist...