1,721,030 research outputs found
On equitably 2-colourable odd cycle decompositions
Full text linkAn l-cycle decomposition of K_v is said to be equitably 2-colourable if there is a 2-vertex-colouring of K_v such that each colour is represented (approximately) an equal number of times on each cycle: more precisely, we ask that in each cycle C of the decomposition, each colour appears on (l-1)/2 (floor) or (l-1)/2 (ceiling) of the vertices of C. In this paper we study the existence of equitably 2-colourable l -cycle decompositions of K_v, where l is odd, and prove the existence of such a decomposition for v=1,l (mod (2l))
Lenz-Barlotti Classification and related open problems: an update
No full texthttp://www.mat.uniroma1.it/~combinat/quaderni
Lenz-Barlotti Classification is the most ambitious classification of projective planes. The planes are classified according to the configuration F formed by the point-line pairs (p,L) for which the plane is (p,L)-transitive. The last survey on existence problems of planes in the various Lenz-Barlotti classes dates back to 1973; in this paper, we discuss the known results and present the open problems, sketching the techniques that are being used, ot that might be used, to attack these problems
Equitably 2-colourable even cycle systems
Full text linkAn l-cycle decomposition of a graph G is said to be equitably c-colourable if there is a c-vertex-colouring of G such that each colour is represented (approximately) an equal number of times on each cycle. In this paper, we consider the existence of equitably 2-colourable even l-cycle systems of the cocktail party graph K-v - I. After establishing that the problem of proving existence of equitably 2-colourable l-cycle decompositions of K-v - I reduces to considering l-admissible values v is an element of [l, 2l), we determine a complete existence result for equitably 2-colourable l-cycle decompositions of K-v - I in the cases that v = 0,2 (mod l), or l is a power of 2, or l is an element of{2q, 4q} for q an odd prime power, or l <= 30
Femmes esclaves. Modèles d'interpretation anthropologique, économique, juridique, Atti XXI Convegno GIREA (1994)
No full text
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
Oltre il limite. Letteratura e disabilità
No full textLa questione della menomazione e della disabilità attraversa gli inconsci individuali e l’immaginario collettivo, le paure e le rimozioni di varie classi sociali, e ha portato spesso le diverse società nel corso
della storia ad allontanare e relegare ai margini le persone con disabilità, o viceversa, ma meno frequentemente, a includerle nel consesso sociale, attribuendo loro un ruolo e un ‘senso’. La letteratura,
in prosa e in versi, ha raccontato, nel corso dei secoli, la disabilità, attraverso opere sulla disabilità, in cui vengono descritti personaggi letterari che convivono con una menomazione, e attraverso opere nate
dalla e nella disabilità, scritte da chi ne fa esperienza diretta o indiretta.
Sempre più spesso a scrivere sono infatti le persone con fragilità o i loro familiari, ossia coloro che maggiormente si fanno carico della cura e dell’assistenza. Il volume propone un viaggio attraverso i secoli, a partire dal Seicento, in questa “letteratura della disabilità”
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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