1,721,196 research outputs found
Leopardi (Giacomo). Porphyrii de vita Plotini et ordine librorum eins. A cura di Moreschini (Claudio)
Des Places Edouard. Leopardi (Giacomo). Porphyrii de vita Plotini et ordine librorum eins. A cura di Moreschini (Claudio). In: Revue belge de philologie et d'histoire, tome 62, fasc. 1, 1984. Antiquité — Oudheid. p. 184
Analysis of Laser Assisted Milling (LAM) of inconel 718 with ceramic tools
AbstractLaser Assisted Milling (LAM) is a hybrid machining technology which combines conventional milling with a localized laser beam. The laser spot heats the uncut workpiece material in front of the cutting edge. The aim of this technology is to improve the machinability of difficult to cut alloys, like Inconel 718. Hence, the material strength is reduced by high temperatures in the hot cutting process. Indeed, Inconel 718 is widely used in aerospace industry due to its excellent mechanical strength and corrosion resistance at high temperatures. These properties result in poor machinability and high tool wear. In this paper experiments of LAM and conventional milling of Inconel 718 were performed by using ceramic inserts. Methods from the Design of Experiment (DoE) were adopted in order to investigate the influence of laser and milling parameters in the hybrid process. The response variables were measured as tool wear, tool deflection, active machining force Fa and passive force Fp. The results showed that machining forces, tool deflection and also tool wear could be reduced by laser heating, especially using enhanced cutting data
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
Leopardi Giacomo
La voce disegna un profilo politico dell'autore, volto a rintracciare negli scritti leopardiani spie di pensiero liberale, a partire dalla canzone ad Angelo Mai, dove si può intravedere la marca di un generico patriottismo laico e liberale sostenuto dal modello dell’antico valore, fino alla mancata collaborazione con l’«Antologia» del circolo del Vieusseux, di cui Leopardi mai condivise il fiducioso spirito progressista, fondato sul «furore di calcoli e arzigogoli politici»
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