1,721,144 research outputs found
Optimal Coils and Control Matching in Wireless Power Transfer Dynamic Battery Chargers for Electric Vehicles
No full textWireless Power Transfer (WPT) is a key enabling technology towards the transportation electrification, able to overcome some limits of the plug-in charging of the Electric Vehicle (EV). In this frame, a special attention is paid to the dynamic WPT systems, where the EV is recharged during motion. This paper presents a model and a resultant method for the system level design of a series-series WPT Dynamic Battery Charger (WPT-DBC) for EVs. The model allows analyzing the joined influence of coil pair characteristics and power converter stages controls on the global performances of WPT-DBCs. The design method provides general guidelines for system level optimization, matching the characteristics of the power and control elements of a series-series WPT-DBC, to achieve the desired efficiency, receiver power loss and battery charge
GaN Power Transistors Behavioral Modeling
No full textThis paper discusses the behavioral modeling of Gallium Nitride (GaN) power transistors for the analysis of voltage/current waveforms and losses in hard-switching Switch-Mode Power Supplies (SMPSs), with main emphasis on the I-V and C-V characteristics. A new technique extending the I-V characteristics to high drain-source voltage is presented. Two different capacitance models are also compared. The proposed models are fully based on device datasheet curves and have been implemented in PathWave Advanced Design System software, allowing easy construction of symbolically defined devices. A 350 V/3 A boost converter is considered as a case study, with a half-bridge of two 650 V-30 A GaN power transistors
Project S4: Italian Strong Motion Database – Delverable D5: Catalogue of geological/ geotechnical information at accelerometric stations
No full textThe activities carried out within Task 2 aim to collect, organize and synthesize geological, geomorphological, geotechnical and geophysical data for the location site of the Accelerometric National Network (RAN) stations in Italy, managed by the Department of Civil Protection, to improve the knowledge of the subsoil characteristics and to allow the site classification based on the EC8 criteria.Istituto Nazionale di Geofisica e Vulcanologia, Roma, ItaliaPublished4.1. Metodologie sismologiche per l'ingegneria sismicaope
Project S4: Italian Strong Motion Database – Delverable D5: Catalogue of geological/ geotechnical information at accelerometric stations
No full textThe activities carried out within Task 2 aim to collect, organize and synthesize geological, geomorphological, geotechnical and geophysical data for the location site of the Accelerometric National Network (RAN) stations in Italy, managed by the Department of Civil Protection, to improve the knowledge of the subsoil characteristics and to allow the site classification based on the EC8 criteria.Istituto Nazionale di Geofisica e Vulcanologia, Roma, ItaliaPublished4.1. Metodologie sismologiche per l'ingegneria sismicaope
Promoting Geoethics in Society: A New Challenge for Geoscientists
No full textThe Geoscience community is called to play an important role in society: helping in the defense against natural risks, orienting on global issues like climate change, looking for new ways to source natural resources from a sustainable perspective, building a knowledgeable society and help to improve the living conditions of human life especially in low income countries. This implies geoscientists are more aware of their social responsibility and capable of working by the principles of integrity, honesty with respect for land, water and air...Published42-443T. Pericolosità sismica e contributo alla definizione del rischio4V. Vulcani e ambiente4A. Clima e Oceani5A. Energia e georisorseN/A or not JCRrestricte
Promoting Geoethics in Society: A New Challenge for Geoscientists
No full textThe Geoscience community is called to play an important role in society: helping in the defense against natural risks, orienting on global issues like climate change, looking for new ways to source natural resources from a sustainable perspective, building a knowledgeable society and help to improve the living conditions of human life especially in low income countries. This implies geoscientists are more aware of their social responsibility and capable of working by the principles of integrity, honesty with respect for land, water and air...Published42-443T. Pericolosità sismica e contributo alla definizione del rischio4V. Vulcani e ambiente4A. Clima e Oceani5A. Energia e georisorseN/A or not JCRrestricte
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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