1,720,981 research outputs found
L'iscrizione CIE 5881 di S. Giuliano : una rilettura
No full textMorandini Alessandro. L'iscrizione CIE 5881 di S. Giuliano : una rilettura. In: Revue belge de philologie et d'histoire, tome 70, fasc. 1, 1992. Antiquité — Oudheid. pp. 109-114
Tackling the dark matter problem: a phenomenologist’s perspective
Full text linkIn this thesis, we will approach the dark matter problem from several different directions.
This work is developed from the point of view of a dark matter phenomenologist and as such
it will involve both theory and experiments.
We will first review the construction of the standard model and its problems. Among these
problems, we focus our attention on the discussion of dark matter, revising the evidences,
the candidates and the experiments currently looking for it.
We proceed by building two original models with a good dark matter candidate: the mo-
tivations for building the two models will be very different. First, we build a composite Higgs
model driven by theoretical motivations. The construction of the model relies entirely on
symmetry arguments, furthermore we have the possibility of solving more than one standard
model problem at once. Then, we build a model where our dark matter candidate is accom-
panied by a colored particle and the motivation for such a model is tied to the experiments.
In this second model the focus will be on the prospects for detectability and study at LHC,
more specifically on the interplay between different signatures.
But this is not the end of the story. Finally, there is a third approach that is neither
theoretical, nor experimental, but rather data-driven. Here we will try to investigate the
possibility of finding dark matter by applying anomaly detection to the LHC data
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
LHC phenomenology of dark matter with a color-octet partner
Full text linkColored dark sectors where the dark matter particle is accompanied by colored partners have recently attracted theoretical and phenomenological interest. We explore the possibility that the dark sector consists of the dark matter particle and a color-octet partner, where the interaction with the Standard Model is governed by an effective operator involving gluons. The resulting interactions resemble the color analogues of electric and magnetic dipole moments. Although many phenomenological features of this kind of model only depend on the group representation of the partner under SU(3)c, we point out that interesting collider signatures such as R-hadrons are indeed controlled by the interaction operator between the dark and visible sector. We perform a study of the current constraints and future reach of LHC searches, where the complementarity between different possible signals is highlighted and exploited
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
Contralateral transmaxillary approaches: the Caldwell-Luc approach revival for ventral skull base surgery
No full textDispelling 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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