1,721,648 research outputs found
JET diagnostic enhancements in preparation for DT operations
No full textIn order to complete the exploitation of the JET ITER-like Wall and to take full benefit from deuterium-Tritium experiments on JET, a set of diagnostic system refurbishments or upgrades is in progress. These diagnostic enhancements focus mainly on neutron, gamma, fast ions, instabilities and operations support. This effort intends to provide better spatial, temporal and energy resolution while increasing measurement coverage. But also previously non existing capabilities, such as Doppler Reflectometry, will now be made available for scientific exploitation. Guaranteeing diagnostic reliability and consistency during the expected DT conditions is also a critical condition for the work and systems being implemented. An overview of status and scope of the ongoing projects is presented. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence
Understanding Negotiation: A Text-Mining and NLP Approach to Virtual Interactions in a Simulation Game
Full text linkInvestigating motivation and time perception in traditional and technology-enhanced methods for psychological assessment
No full textThe recent rise in the adoption of technology-enhanced methodologies for the assessment of psychological abilities (such as cognitive skills and soft skills) has shown the several advantages that these novel technologies have in comparison with traditional methods, including their interactive nature, immediate feedback and the ability to simulate real-life situations. However, the differences between these methods are often difficult to quantify and conceptualize. The aim of the present study is to take a step forward in investigating these differences by evaluating the implicit and explicit motivation in the completion of two tests that assess the ability to manage interpersonal conflict. A sample of 100 participants was asked to complete two psychological tests for conflict management: the ROCI-II, a traditional test and Enact, a serious game, followed by a self-report questionnaire. The motivation, pleasantness and perceived time spent on the two tests were compared. Results show that the technology-enhanced platform was evaluated as significantly more pleasant and interesting. Additionally, graduates/postgraduates in other disciplines than psychology significantly underestimated the time spent interacting with the technological platform in comparison with the standard paper and pencil test
JET diagnostic enhancements in preparation for DT operations
No full textIn order to complete the exploitation of the JET ITER-like Wall and to take full benefit from deuterium-tritium experiments on JET, a set of diagnostic system refurbishments or upgrades is in progress. These diagnostic enhancements focus mainly on neutron, gamma, fast ions, instabilities, and operations support. These efforts intend to provide better spatial, temporal, and energy resolution while increasing measurement coverage. Also previously non-existing capabilities, such as Doppler reflectometry is now available for scientific exploitation. Guaranteeing diagnostic reliability and consistency during the expected DT conditions is also a critical objective of the work and systems being implemented. An overview of status and scope of the ongoing projects is presented. © 2016 EURATOM
JET diagnostic enhancements testing and commissioning in preparation for DT scientific campaigns
No full textIn order to optimize the scientific exploitation of JET (Joint European Torus) during the upcoming deuterium-tritium experiments, a set of diagnostic systems is being enhanced. These upgrades focus mainly on the experimental and operational conditions expected during tritium campaigns. It should be stressed that measurements relevant for burning plasmas are specifically targeted. Previously non-available capabilities, such as a current measurement system fully covering all poloidal field circuits, are described in detail. Instrument descriptions, performance prediction, testing, and initial commissioning results of these systems are presented. © 2018 EURATOM
Agents, neuro-agents, and artificial organisms
No full textIn this contribution we briefly retrace Orazio Miglino’s scientific path, highlighting some crucial points of his reflection in the field of psychology and Artificial Intelligence. Agents, neuro-agents and artificial organisms represent different stages of this path. We also describe his work on Tolman’s schematic sowbug that from the pages of a dusty journal lived a new life in a simulation of Artificial Life, a perfect example of how human sciences, married to technology, can make a relevant contribution to the understanding of natural phenomena
Design space exploration for architecture selection: Radial Neutron Camera nuclear fusion diagnostic study case
No full textSystem engineering is an established methodology meant to support engineering design activities for complex systems design. Nuclear fusion devices design complexity derives from contextual presence of both a challenging operating domain requiring frontier technology and a restrictive regulation on safety or systems compatibility aspects. System engineering methodologies adapted to nuclear design environment reduce risks of late design changes related to compatibility problems emerging at integration stage. Present work describes the methodology developed for the conceptual design phase of a nuclear fusion neutronic diagnostic, the Radial Neutron Camera for ITER plant. In particular the focus is on the characterization of design intents and the structured exploration of design domain aiming at baseline architecture to be engineered in next design phase. A formal definition of design domain space in terms of architectural elements has been developed to allow the instantiation of a set of candidate options. The instantiation process was structured according to sub-system intrinsic information content and potential mutual impact. Finally, architectural options have been assessed according to a specifically defined ranking function able to integrate information characterizing the candidate architectures deriving from different domains enabling a close collaboration with stakeholders. © 2018 Elsevier B.V
Characterization of a GEM-based fast neutron detector
No full textThe neutron efficiency of a Gas Electron Multiplier (GEM)-based detector designed for fast neutron measurements in fusion devices was determined through the combined use of Monte Carlo (MCNPX) calculations and analysis of deuterium-deuterium and deuterium-tritium neutron irradiation experiments. The detector, characterized by a triple GEM structure flushed with a Ar/CO 2/CF4 - 45/15/40 gas mixture, features a digital read-out system and has two sub-units for the detection of 2.5+14 MeV neutrons and 14 MeV neutrons (UDD and UDT, respectively). The pulse height spectra (PHS) determined from the curves of experimental efficiency as a function of the detector's high voltage (HV) and the MCNPX-simulated PHS were compared using a fitting routine that finds the best match between the experimental and simulated PHS by assuming a parametric model for the relation between HV (that determines the detector's gain) and the energy deposited in the gas. This led to express the experimental neutron efficiency as a function of the discrimination level set on the deposited energy (energy threshold). The detector sensitivity to γ-rays was also analyzed and the operational range in which the γ-ray contribution to the signal is not negligible was determined. It is found that this detector can reach a maximum neutron efficiency of ∼1×10-3 counts/n at 2.5 MeV (UDD sub-unit) and of ∼4×10-3 counts/n at 14 MeV (UDT and UDD sub-units). © 2014 The Authors
Micro-movement as an objective measure to assess autism spectrum disorder
No full textThe assessment of the Autism Spectrum Disorder (ASD) has always focused on the observational analysis of behavior, primarily aiming to detect the presence of some behaviors considered typical of the disorder. However, autism is often characterized by motor abnormalities as well. This paper presents a pilot study with the aim to assess the preliminary capability of a software for micro-movement analysis to detect typical characteristics of movement in subjects with ASD. Therefore, the software has been tested on a small sample of ASD subjects and the results have been compared to those of a group of subjects with typical development (TD). The results showed that it is possible to observe some differences between the groups in relation to some parameters of effectiveness, linearity, and average speed of trajectories
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