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Analysis of empty ATLAS pilot jobs
No full text<p>In this analysis we quantify the wallclock time used by short empty pilot jobs on a number of WLCG compute resources. Pilot factory logs and site batch logs are used to provide independent accounts of the usage. Results show a wide variation of wallclock time used by short jobs depending on the site and queue, and changing with time. For a reference dataset of all jobs in August 2016, the fraction of wallclock time used by empty jobs per studied site ranged from 0.1% to 0.8%. Aside from the wall time used by empty pilots, we also looked at how many pilots were empty as a fraction of all pilots sent. Binning the August dataset into days, empty fractions between 2% and 90% were observed. The higher fractions correlate well with periods of few actual payloads being sent to the site.</p>
Analisi spaziale su QGIS PARTE II - Esercitazione
No full text<p>Exercises related to the Spatial Analysis in QGIS PART II lesson<br>These exercises (in Italian) are related to the lesson on the following topic: Spatial Analysis in QGIS – PART II, as part of the annual advanced QGIS course organized by ISPRA within its SNPA activities.</p>
Introduzione ai Sistemi Informativi e modelli di dati
Get PDF<p>The present lesson (in Italian language) is related to the annual course of QGIS (base level) held by ISPRA in the frame of its SNPA activities. The lesson concerns the introduction to Geographic Information Systems and data models</p>
Modellazione idrologica con QGIS model builder e creazione di plugins
Get PDF<div>The present lesson (in Italian language) is related to the annual course of QGIS (advanced level) held by ISPRA in the frame of its SNPA activities. The lesson concerns hydrological modeling in QGIS by means of the QGIS model builder and the creation of a plugin.</div>
Enhancing Natura 2000 habitat monitoring: A framework for biodiversity conservation assessment
No full textNote Illustrative della Carta geologica d'Italia alla scala 1:50.000, F. 009 Anterselva
No full text<p>Note illustrative redatte per il Foglio geologico n. 009 Anterselva della Carta Geologica d'Italia alla scala 1:50.000. 168 pp.</p>
Second resonance of the Higgs field: motivations, experimental signals, unitarity constraints
No full textPerturbative calculations predict that the effective potential of the Standard Model should have a new minimum, well beyond the Planck scale, which is much deeper than the electroweak vacuum. So far, most authors have accepted the metastability scenario in a cosmological perspective which is needed to explain why the theory remains trapped in our electroweak vacuum but requires to control the properties of matter in the extreme conditions of the early universe. As an alternative, one can consider the completely different idea of a non-perturbative effective potential that, as at the beginning of the Standard Model, is restricted to the pure sector but is consistent with the indications of the now existing analytical and numerical studies, namely "triviality" and a description of SSB as weak first-order phase transition. In this approach, the electroweak vacuum is now the lowest energy state because, besides the state with mass GeV, defined by the quadratic shape of the potential at its minimum, there is a second much larger mass scale GeV associated with the zero-point energy determining the potential depth. Despite its large mass, the heavier state would couple to longitudinal Ws with the same typical strength as the low-mass state at 125 GeV and thus represent a relatively narrow resonance mainly produced at LHC by gluon-gluon fusion. Therefore, it is interesting that, in the LHC data, one can find combined indications of a new resonance of mass GeV, with a statistical significance which is far from negligible. Since this non-negligible evidence could become an important new discovery with forthcoming data, we outline further refinements of the theoretical predictions, that could be obtained by implementing unitarity constraints, in the presence of fermion and gauge fields, with the type of coupled-channel calculations nowadays used in meson spectroscopy
EUSO-Offline: A comprehensive simulation and analysis framework
No full textThe complexity of modern cosmic ray observatories and therich data sets they capture often require a sophisticated softwareframework to support the simulation of physical processes, detectorresponse, as well as reconstruction and analysis of real andsimulated data. Here we present the EUSO-Offline framework. Thecode base was originally developed by the Pierre AugerCollaboration, and portions of it have been adopted by othercollaborations to suit their needs. We have extended this softwareto fulfill the requirements of Ultra-High Energy Cosmic Raydetectors and very high energy neutrino detectors developed for theJoint Exploratory Missions for an Extreme Universe Observatory(JEM-EUSO). These path-finder instruments constitute a program tochart the path to a future space-based mission like POEMMA. Forcompleteness, we describe the overall structure of the frameworkdeveloped by the Auger collaboration and continue with a descriptionof the JEM-EUSO simulation and reconstruction capabilities. Theframework is written predominantly in modern C++ (compliled againstC++17) and incorporates third-party libraries chosen based onfunctionality and our best judgment regarding support andlongevity. Modularity is a central notion in the framework design, arequirement for large collaborations in which many individualscontribute to a common code base and often want to compare differentapproaches to a given problem. For the same reason, the framework isdesigned to be highly configurable, which allows us to contend witha variety of JEM-EUSO missions and observation scenarios. We alsodiscuss how we incorporate broad, industry-standard testing coveragewhich is necessary to ensure quality and maintainability of arelatively large code base, and the tools we employ to support amultitude of computing platforms and enable fast, reliableinstallation of external packages. Finally, we provide a fewexamples of simulation and reconstruction applications usingEUSO-Offline