Papers by Federico Calzolari
Journal of Instrumentation, 2009
The results of the CMS tracker alignment analysis are presented using the data from cosmic tracks... more The results of the CMS tracker alignment analysis are presented using the data from cosmic tracks, optical survey information, and the laser alignment system at the Tracker Integration Facility at CERN. During several months of operation in the spring and summer of 2007, about five million cosmic track events were collected with a partially active CMS Tracker. This allowed us to perform first alignment of the active silicon modules with the cosmic tracks using three different statistical approaches; validate the survey and laser alignment system performance; and test the stability of Tracker structures under various stresses and temperatures ranging from +15 • C to −15 • C. Comparison with simulation shows that the achieved alignment precision in the barrel part of the tracker leads to residual distributions similar to those obtained with a random misalignment of 50 (80) µm in the outer (inner) part of the barrel.
Nuclear Physics B - Proceedings Supplements, 2007
Journal of Physics: Conference Series, 2011
In this paper we introduce a new way to deal with Grid portals referring to our implementation. L... more In this paper we introduce a new way to deal with Grid portals referring to our implementation. L-GRID is a light portal to access the EGEE/EGI Grid infrastructure via Web, allowing users to submit their jobs from a common Web browser in a few minutes, without any knowledge about the Grid infrastructure. It provides the control over the complete lifecycle of a Grid Job, from its submission and status monitoring, to the output retrieval. The system, implemented as client-server architecture, is based on the Globus Grid middleware. The client side application is based on a java applet; the server relies on a Globus User Interface. There is no need of user registration on the server side, and the user needs only his own X.509 personal certificate. The system is user-friendly, secure (it uses SSL protocol, mechanism for dynamic delegation and identity creation in public key infrastructures), highly customizable, open source, and easy to install. The X.509 personal certificate does not get out from the local machine. It allows to reduce the time spent for the job submission, granting at the same time a higher efficiency and a better security level in proxy delegation and management.
Journal of Physics: Conference Series, 2010
High availability has always been one of the main problems for a data center. Till now high avail... more High availability has always been one of the main problems for a data center. Till now high availability was achieved by host per host redundancy, a highly expensive method in terms of hardware and human costs. A new approach to the problem can be offered by virtualization. Using virtualization, it is possible to achieve a redundancy system for all the services running on a data center. This new approach to high availability allows to share the running virtual machines over the servers up and running, by exploiting the features of the virtualization layer: start, stop and move virtual machines between physical hosts.
Journal of Engineering for Gas Turbines and Power, 2005
ABSTRACT
Abstract La candidatura della Sezione INFN di Pisa come membro del consorzio italiano dei Tier 2 ... more Abstract La candidatura della Sezione INFN di Pisa come membro del consorzio italiano dei Tier 2 di CMS è stata proposta nel Giugno 2005. Partendo dall'inizio del commissioning avvenuto alla fine del 2006, si descrive l'attuale stato di ciò che, nel corso del progetto, è ...
This paper presents a case study concerning the challenges and requirements posed by next generat... more This paper presents a case study concerning the challenges and requirements posed by next generation language resources, realized as an overall model of open, distributed and collaborative language infrastructure. If a sort of "new paradigm" is required, we think that the emerging and still evolving technology connected to Grid computing is a very interesting and suitable one for a concrete realization of this vision. Given the current limitations of Grid computing, it is very important to test the new environment on basic language analysis tools, in order to get the feeling of what are the potentialities and possible limitations connected to its use in NLP. For this reason, we have done some experiments on a module of Linguistic Miner, i.e. the extraction of linguistic patterns from restricted domain corpora.
Arxiv preprint physics/0701067, 2007
Moving from a National Grid Testbed to a Production quality Grid service for the HEP applications... more Moving from a National Grid Testbed to a Production quality Grid service for the HEP applications requires effective operations structure and organization, proper user and operations support, flexible and efficient management and monitoring tools.
Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference, 2008
... L. TUURAK, G. EULISSEK, B. BOCKELMANL, C. LUNDSTEDTL, R. EGELANDM, D. EVANSN, D. MASONN, O. G... more ... L. TUURAK, G. EULISSEK, B. BOCKELMANL, C. LUNDSTEDTL, R. EGELANDM, D. EVANSN, D. MASONN, O. GUTSCHEN, L. SEXTON-KENNEDYN, DW ... University of Nebraska NE, USA;(M) University of Minnesota MN, USA;(N) FNAL Batavia IL, USA ;(0) Cornell University NY ...
Uploads
Papers by Federico Calzolari