1,721,004 research outputs found
PPP using NRCan Ultra Rapid Products: near real-time comparison and monitoring of time-scales generated in time and frequency laboratories
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Extensive cosmic showers detection: the importance of timing and the role of GPS in the EEE experiment
Full text linkExtreme Energy Events (EEE) is an extended Cosmic Rays (CRs) Observatory, composed of about 60 tracking telescopes spread over more than 10 degrees in Latitude and Longitude. We present the metrological characterization of a representative set of actually installed EEE GPS receivers, their calibration and their comparison with respect to dual-frequency receivers for timing applications, as well as plans for a transportable measurement system to calibrate the currently deployed GPS receivers. Finally, the realization of an INRIM Laboratory dedicated to EEE, aimed at hosting reference telescopes and allowing timing studies for Particle Physics/Astrophysics experiments, is presented, as well as the possibility of synchronizing already deployed telescopes utilizing White Rabbit Technique, over optical fiber links, directly with the Universal Time Coordinated time scale, as realized by INRIM (UTC(IT))
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Time and Frequency Transfer through a network of GNSS recerivers located in Timing Laboratories
No full textThe new Data Measurement System - DMS of the INRIM Time Laboratory
No full textThe Data Measurement System (DMS) of the INRIM Time Laboratory, is a measurement system composed by some instruments and controlled by a specically designed software that is used to measure and acquire the timing signals from all the atomic clocks as well as other devices of the laboratory, with respect to the reference Italian Time Scale, whose data need to be communicated to the BIPM (Bureau International des Poids et Mesures) or, more in general, to be constantly monitored. The system is able to measure also the status parameters of the atomic clocks and the environmental parameters of the rooms hosting all the instrumentation, thus permitting their constant check and monitoring.
Recently, a big eort has been put in renewing and improving the DMS, both from the hardware and the software point of view. In this Technical Report a description will be provided of the DMS system and of all the interventions done to improve its functionalities
The new Cables Database for the Time and Frequency Laboratory.
No full textIn the INRIM Time and Frequency Laboratory operates a large number of devices that are connected between them by several type of cables equipped with different connectors. Most of the cables are connected passing below the floor, so it is quite difficult to understand their path. During the years many new connections have been added to the old ones, thus increasing the number of cables. For this reason it has been decided to create a new database for all the devices, the connections and the cables so to gather all the important information. Moreover the new database will be accessible through a webpage so to be available from all the personal computers in the laboratory
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