170,144 research outputs found
Il Tevere nel suo corso inferiore: dalle divagazioni alle regimazioni
No full textIl meandreggiamento del Tevere dall'età antica ad oggi viene studiato in base ai riscontri archeologici posti sul suo percorso
J. Ruffié, J.-C. Quilici, M.-C. Lacoste, eds., Anthropologie des populations andines
No full textGouy-Gilbert Cécile. J. Ruffié, J.-C. Quilici, M.-C. Lacoste, eds., Anthropologie des populations andines. In: L'Homme, 1979, tome 19 n°2. pp. 105-106
Tra memoria dell’antico e identità culturale. Tempi e protagonisti della scoperta dei Monti Lepini
No full textÉtude hémotypologique et épidémiologique des Maya de la région de Peto (Yucatan mexicain)
No full textRuffié J., Carles-Trochain E., Quilici J.C., Bouloux C. Étude hémotypologique et épidémiologique des Maya de la région de Peto (Yucatan mexicain). In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XII° Série. Tome 4 fascicule 3, 1969. pp. 281-294
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Experimental and numerical study of expandable threaded connections and proposal of a new design
No full textThis paper investigates the behaviour of a flush oilfield premium connection during the cold expansion process. The objective has been to validate, through experimental tests of make up and expansion on prototypes designed traditionally, the numerical simulation generated to reproduce and interpret the mechanism that occurs during the whole process. A finite element model, able to understand the expansion mechanics, to explain the damages caused on the expanded prototypes and to define design changes in order to improve the mechanical strength and hydraulic seal, has been set up. Taking advantage of the calculation procedure, a new expandable connection has been developed, at first on the basis of numerical simulation, then assessed by means of experimental tests. The new connection has shown definitely better behaviour about the hydraulic seal, withstanding the maximum internal pressure of 5050 psi
Polarity of the first episode, clinical characteristics, and course of manic depressive illness: A systematic retrospective investigation of 320 bipolar I patients.
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