1,721,546 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
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
A lightweight mutual and transitive authentication mechanism for IoT network
No full textIoT devices are typically authenticated directly by gateways present in the network. However, in large and complex IoT systems like the smart city or smart industry which consist of thousands of connected devices, it may not be always feasible to be directly connected to the gateway while it may be possible to be connected to another device. Therefore, already authenticated devices should facilitate the new device to get authenticated by the gateway. To address this issue, the existing protocols use multiple authentication protocols based on different cryptography techniques, which are difficult to implement and manage in resource constrained IoT devices. In this paper, we propose a Transitive device authentication protocol based on the Chebyshev polynomial. The transitive authentication protocol utilizes the session key established in the mutual authentication between the intermediate device and gateway. Both the mutual authentication and transitive authentication protocols are relying on the same preregistration and authentication mechanism. To ensure the security of the proposed authentication protocol, detailed security analysis is carried out, and the secure session key establishment is verified using the BAN logic. Moreover, the proposed protocol is tested against crucial attacks in the Scyther tool. These formal analyses and Scyther attack simulation show that the proposed protocol is capable of withstanding critical attacks. Finally, to verify the efficiency, the protocol implementation is experimentally compared with similar approaches studied in the literature. The results show that the proposed protocol offers better performance, providing significantly lower response time, handshake duration, memory utilization, and energy consumption
Enhanced structural interpretation from 3D seismic data using hybrid attributes: New insights into fault visualization and displacement in Cretaceous formations of the Scotian Basin, offshore Nova Scotia
Full text linkMeta or hybrid attributes extracted from seismic data through artificial neural networks enhance structural details in subsurface strata. Cretaceous units within the Penobscot prospect are devoid of such interpretations. Although these units are plausible zones for hydrocarbon generation and accumulation, the role of geologic structures responsible for such entrapment is poorly understood. The present study enlightens these latter geological structures through a case study that uses 3D time-migrated seismic data from the Penobscot prospect in the Scotian Basin. A modem data conditioning approach, used together with multi-attribute analyses and a supervised neural network, have brought out the minute details of subsurface geologic structures through a hybrid attribute, called the fault probability cube (FPC). The present fault displacement analysis reveals that the major fault of the prospect has evolved by the coalescence of different fault segments grown over space and time, and has demonstrated a predominant NNW-SSE structural trend. Such a geometry has structurally modulated the Cretaceous units (the Logan Canyon, the Dawson Canyon and the Wyandot Formations) giving rise to different horst-graben structures and fracture networks, as shown by the FPC attribute. This generates complicated structural deformation and accommodation space, thereby enabling different trapping zones for hydrocarbon accumulation within these units. Such a detailed structural understanding will provide significant input to the future exploration and development programme in the Penobscot prospect
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
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