1,721,658 research outputs found
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
Detecting and preventing type flaws at static time
No full textA type flaw attack on a security protocol is an attack where an honest principal is cheated on interpreting
a field in a message as the one with a type other than the intended one. In this paper, we shall present an
extension of the LYSA calculus to cope with types, by using tags to represent the intended types of
terms. We develop a Control Flow Analysis for this calculus which soundly over-approximates all the
possible behaviour of a protocol and, in particular, is able to capture any type confusion that may occur
during the protocol execution. The analysis acts in a descriptive way: it describes which violations may
occur. In the same setting, our approach also offers a prescriptive usage: we can impose a type discipline,
by forcing some data to be of the expected types. At this point, the analysis may statically check that
type violations are not possible any longer. In other words, we instrument the code with the only checks
necessary to enforce type security. Finally, we apply our framework to a multi-protocol setting, where the
risk of having type flaw attacks is higher. Our analysis has been implemented and successfully applied
to a number of security protocols, showing it is able to capture type flaw attacks. The implementation
complexity of the analysis is low polynomial
Statically detecting message confusions in a multi-protocol setting
Full text linkIn a multi-protocol setting, different protocols are concurrently
executed, and each principal can participate in more than one.
The possibilities of attacks therefore increase, often due to the presence
of similar patterns in messages. Messages coming from one protocol can
be confused with similar messages coming from another protocol. As a
consequence, data of one type may be interpreted as data of another,
and it is also possible that the type is the expected one, but the message
is addressed to another protocol. In this paper, we shall present
an extension of the LySa calculus [7, 4] that decorates encryption with
tags including the protocol identifier, the protocol step identifier and
the intended types of the encrypted terms. The additional information
allows us to find the messages that can be confused and therefore to
have hints to reconstruct the attack. We extend accordingly the standard
static Control Flow Analysis for LySa, which over-approximates
all the possible behaviour of the studied protocols, included the possible
message confusions that may occur at run-time. Our analysis has been
implemented and successfully applied to small sets of protocols. In particular,
we discovered an undocumented family of attacks, that may arise
when Bauer-Berson-Feiertag and the Woo-Lam authentication protocols
are running in parallel. The implementation complexity of the analysis
is low polynomial
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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