1,721,251 research outputs found
Francis Watson, Paul, Judaism and the Gentiles. A Sociological Approach , 1986
No full textFocant Camille. Francis Watson, Paul, Judaism and the Gentiles. A Sociological Approach , 1986. In: Revue théologique de Louvain, 19ᵉ année, fasc. 2, 1988. pp. 200-204
Francis Watson, Paul, Judaism and the Gentiles. A Sociological Approach , 1986
No full textFocant Camille. Francis Watson, Paul, Judaism and the Gentiles. A Sociological Approach , 1986. In: Revue théologique de Louvain, 19ᵉ année, fasc. 2, 1988. pp. 200-204
Symmetries and automorphisms of compact Riemann surfaces
No full textIn this thesis we deal with compact Riemann surfaces, in fact mainly those uni- formized by normal subgroups of Fuchsian triangle groups. A symmetry of such a surface is an anti-conformal involution mapping the surface to itself. Each sym- metry is given a species which completely classifies its topological action on the surface. We examine an oversight in an important Theorem of Singerman's and try to mend it. In so doing we find a kind of symmetry not anticipated by Singer- man. Chapter four contains the symmetry types of all Riemann surfaces with large cyclic automorphism groups. Harnack gave an upper bound on the number of curves fixed by a symmetry of a surface of a particular genus, the 'unexpected' symmetries mentioned above are the only symmetries of the surfaces in Chapter four to attain that bound. In Chapter five we give a similar treatment to those surfaces with large non-cyclic abelian automorphism groups. Harnack's bound is not attained by any symmetry of any of these surfaces. The Appendix chiefly accompanies Chapters four and five and looks in some detail at the inclusions between triangle groups and the NEC groups that contain them with index two. In Chapter six we turn our attention to maps and hypermaps, lying on ori- entable, connected surfaces without boundary. Such objects can naturally be thought of as lying on those Riemann surfaces in the scope of this thesis. These surfaces, together with the maps and hypermaps themselves, are receiving much attention at the moment in connection with Belyi's Theorem, which implies that they are precisely the surfaces corresponding to the algebraic curves defined over algebraic number fields. The maps and hypermaps that we deal with are all regu- lar and their face centres, vertices and edge centres are important in the geometric and combinatorial properties of the maps and hypermaps. We call these points 'geometric points'. Weierstrass points are right at the heart of Riemann surfaces and we determine whether the 'geometric' points of regular maps and hypermaps with abelian automorphism groups are Weierstrass points or not. Finally we cal- culate the weight at each of the 'geometric' points of all the regular maps of genus two, three, four and five.</p
Non-maximal cyclic group actions on compact Riemann surfaces
Full text linkWe say that a finite group G of automorphisms of a Riemann surface X is non-maximal in genus y if (i) G acta as a group of automorphisms of some compact Riemann surface Xg of genus g and (ii), for alí such surfaces Xg, | Aut Xg |>| G |. In this paper we investigate ihe case where G is a cylic group Cn of order n. If Cn acts on only finitely many surfaces of genus g, then we completely solve the problem of finding all such pairs (n, g)
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
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