1,721,543 research outputs found
Costruire la professione docente nel percorso per il sostegno agli alunni con disabilità delle Scuole Secondarie
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Compliance with Specific Recommendations and Tasks Reduces Nipple Necrosis Rates in Prepectoral Implant-Based Reconstruction After Nipple-Sparing Mastectomy
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Steps to follow in oncoplastic breast surgery to optimise oncological and cosmetic outcome
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SPICE assisted simulation of controlled electric drives: An application to switched reluctance drives
No full textAn example of the simulation of a closed loop controlled electric drive that shows the feasibility of simulating this equipment by means of a general-purpose electronic circuit analysis program is described. A SPICE program is used owing to its well-known facility for simulating electronic circuits. Its application to the control of a switched reluctance drive is presented. A way to extend SPICE to the simulation of the electromechanical energy conversion and the drive control is also presented. A closed-loop speed control is considered, and the simulation results are validated by experimental tests executed on an industrial drive
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
A Five-Level Single-Phase Grid-Connected Converter for Renewable Distributed Systems
No full textIn low-power renewable systems a single-phase grid-connected converter is usually adopted. This paper deals with a novel five-level converter topology that follows this trend. A review of the state of the art of the five-level topologies and a theoretical power loss comparison with the proposed solution is realized. The proposed converter architecture is based on a full-bridge topology with two additional power switches and two diodes connected to the midpoint of the DC Link. Since the two added levels are obtained by the discharge of the two capacitors of the DC Link, the balancing of the midpoint voltage is obtained with a specific PWM strategy. Simulation and experimental results show the effectiveness of the proposed solution
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