1,722,991 research outputs found

    On Orlicz spaces satisfying the Hoffmann-J{\o}rgensen inequality

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    Building on Talagrand's proof of the Hoffmann-J{\o}rgensen inequality for LpL_p spaces and its version for the exponential Orlicz spaces we provide a full characterization of Orlicz functions Ψ\Psi for which an analogous inequality holds in the Orlicz space LΨ(F)L_\Psi(F), where FF is an arbitrary Banach space. As an application we present a characterization of Talagrand-type concentration inequality for suprema of empirical processes with envelope in LΨL_\Psi (equivalently for sums of independent FF-valued random variables in LΨ(F)L_\Psi(F)). This result generalizes in particular an inequality by the first-named author concerning exponentially integrable summands and a recent inequality due to Chamakh-Gobet-Liu on summands with β\beta-heavy tails. Another corollary concerns concentration for convex functions of independent, unbounded random variables, generalizing recent results due to Klochkov-Zhivotovskiy and Sambale. We also obtain a corollary concerning boundedness in LΨ(F)L_\Psi(F) of partial sums of a series of independent random variables, generalizing the original result by Hoffmann-J{\o}rgensen

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    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

    Taking the Prevention of Genocide Seriously:Media Incitement to Genocide Viewed in the Light of the Responsibility to Protect

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    The Responsibility to Protect (R2P) is a norm of international relations developed in the 2000’s to address past failures by the international community to prevent incidents of mass violence occurring in various parts of the world. Its central theme is that States hold a primary responsibility to protect persons within their territories from mass violence, genocide, gross violations of human rights and other (man-made) humanitarian catastrophes. Where a State is unwilling or unable to fulfil this responsibility, the R2P norm requires that secondary responsibility must be borne by the international community. In this article, the authors argue that effective genocide prevention requires greater attention to one leading contributory factor to genocidal violence: incitement of violence by the media. The article investigates the extent to which the R2P norm (and general international law on which it is based) recognizes a State obligation to stop media broadcasts which incite genocide. Importantly, the authors address the thorny question of how to draw the line between incitement to genocidal violence against which preventive measures may be taken, and mere hate speech which to a certain extent is protected by international law rules on the freedom of speech. A key argument of the authors is that in defining incitement to genocide for genocide prevention purposes, reliance should not be placed exclusively on the definition of the term developed in international criminal law for the rather different purpose of prosecuting and establishing responsibility for genocide that has already occurred. In other words, incitement to genocide for prevention purposes should be defined to include certain situations of hate speech which may not satisfy the threshold for individual criminal responsibility for incitement to genocide in international criminal law. The article is an interdisciplinary collaboration bringing together perspectives from Okany and Hoffman’s respective fields of expertise - international law and communication science

    Variations on the Author

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    “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

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    We 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

    Extremistische Inszenierungen: Elemente und Pfade von Radikalisierungs- und Deradikalisierungsprozessen.

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    Zick A. Extremistische Inszenierungen: Elemente und Pfade von Radikalisierungs- und Deradikalisierungsprozessen. In: Hoffmann J, Böckler N, eds. Radikalisierung und terroristische Gewalt: Perspektiven aus dem Fall- und Bedrohungsmanagement. Frankfurt a. Main: Verlag für Polizeiwissenschaft; 2017: 15-36
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