The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Broad Fe K-shell emission lines at ~ 6–7 keV are observed in a number of bright accreting galactic X-ray sources. In the case of the black hole candidates Cyg X-1 and 4U1543-47 the line centroid energy is significantly lower than 6.4 keV, indicating a substantial redshift. Blending of different lines from different ionisation stages of iron and thermal broadening produce widths smaller than observed...
In the last five years the collaboration between the Laboratory of Landscape Archaeology and Remote Sensing at the University of Siena and the Ground Remote Sensing Lab of the Institute of Technologies Applied to the Cultural Heritage (ITABC-CNR, Rome) produced several site prospection case histories. We focused our attention on a quite limited chronological range between late roman and the early...
With this work we present the activity and performance optimization of the Italian computing centers supporting the ATLAS experiment forming the so-called Italian Cloud. We describe the activities of the ATLAS Italian Tier-2s Federation inside the ATLAS computing model and present some Italian original contributions. We describe StoRM, a new Storage Resource Manager developed by INFN, as a replacement...
We developed XAL, a framework that, in our opinion, allows to build Web-oriented applications and services in a more productive way. The core of the framework is a programming language based upon timed-automata. We believe this formalism reflects the nature of many web-oriented applications, each page being a state, and each link being a transition toward another state. Once the programmer defined...
In preparation for first data at the LHC, a series of Data Challenges, of increasing scale and complexity, have been performed. Large quantities of simulated data have been produced on three different Grids, integrated into the ATLAS production system. During 2006, the emphasis moved towards providing stable continuous production, as is required in the immediate run-up to first data, and thereafter...
The Large Hadron Collider at CERN will start data acquisition in 2007. The ATLAS (A Toroidal LHC Apparatus) experiment is preparing for the data handling and analysis via a series of Data Challenges and production exercises to validate its computing model and to provide useful samples of data for detector and physics studies. The last Data Challenge, begun in June 2004 and ended in early 2005, was...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.