1,721,340 research outputs found
Evaluation of ratite skinning force in order to fix plant and mechanical solutions
No full textHide is the most requested product of ratite slaughter. The “first-rate” of the hide to assure its appreciation on the marketplace. The hide is tanned in South Africa and sold all over the world. Besides, the ostrich meat is considered a niche production in the marketplace thus allowing for another profit for the ostrich breeding.
Theoretical analysis of skinning process has been carried out, and an automatic measurement system in order to record the drawing-force on the animal’s body during skinning tests, has been designed. The aim was to indentify the best animal position and provide values of drawing-force in order to design a specific machine for ostrich skinning.
Experimental results partially confirm theoretical analysis; they point out that the angle of inclination of drawing-force with back-line is a parameter which mostly influences the value of drawing-force and that this influence tends to increase as the angle is near to 90° or exceeds this limit. In any case, the applied drawing-force must not exceed 350,0 daN.
Therefore ostrich skinning should be done with vertical-drawing machines and the animal should be suspended by its wings at the rail, in relation to their anatomy structure and the tensile strenght of the hide. In the case of low working capacity (8-10 heads per hour) the animal could be skinned suspended by the legs, considering some limitations pointed out during experimental trials; technical, operating, ergonomic, health-hygienic limitations are accentuated if the workers involved are not enough able to ostrich slaughter
Giovani e ordine sociale. Miti e ruoli, in Europa e in Italia, tra XIX e XX secolo
No full textDalle formazioni delle compagnie giovanili paesaneo di quartiere nell'età pre-industriale,il volume passa in rassegna le nuove forme di associazioni giovanili che nellEuropa e Italia del XX secolo contribuiscono a formare la sociaetà di massa. In ambito professionale, si approfondisce la realtà del lavoro minorile,in ambito italiano
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
"Il padre di un nuovo movimento". Tolstoj e la radicalizzazione del pacifismo (1914-1921)
No full textAtti del convegno tenutosi a Venenzia nel novembre 2011 in occasione del centenario della morte del grande scrittor
Tolstoj cent'anni dopo
No full textIntroduzione al volume degli atti del Convegno in occasione del centenario della morte dello scrittor
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