1,720,978 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
A Secure and Efficient Location Update Scheme for Next Generation Proxy Mobile IP in Distributed Environment
No full textAbstractUsage of wireless networks among the users is apparently high. But, efficiency of the network gets decreased because of the challenges in the network. In proxy mobile IPv6 (PMIPv6), the message exchange for location update by any mobile device is established in centralized environment. Here, the messages are sent and received through local mobility anchor with centralized feature. As a result, there is devastating traffic at local mobility anchor which increases the cost of network. Also, the location update in distributed mobility environment is vulnerable to attacks such as false binding update, man-in-the-middle, replay attack etc. Therefore, the development of location update scheme necessitates the security enhancement and reduction in cost. Hence, the present paper proposes a new secure and efficient location update scheme using tokenization. It eliminates the additional message exchanges such as proxy binding update, binding query and acknowledgements between the hosts required in the earlier works. Here, the traffic overhead is controlled by distributing the token of mobile node with mobile access gateway in distributed mobility environment. The security of the proposed scheme is validated using AVISPA – a security model checker. Finally, the analysis of security and performance evaluation demonstrates that the proposed scheme shows better security and significant reduction in the cost of signaling messages and data packet delivery
Prevention of Desynchronization Attack in 4G LTE Networks Using Double Authentication Scheme
No full textAbstractThe core objective of 3GPP Long Term Evolution (LTE) is to provide a secured communication and high data rate for 4G users. Even though 4G network provides security, there are loopholes which lead to several attacks in 4G network. One such attack is desynchronization attack in 3GPP handover key management. This paper deliberates the vulnerability of desynchronization attack that occurs when source acts as rogue base station in 3GPP. In addition, it discusses how this attack jeopardizes the communication in 4G network and subsequently proposes a new scheme to overcome this attack. In the proposed scheme, the target generates its own key rather than using the key generated by source node for future communication with target to achieve a secure communication between the source and target base station in 4G LTE. The proposed scheme is simulated using network simulator 3 (NS-3). The numerical analysis shows that the proposed scheme achieves a significant reduction in the communication cost for key generation and authentication in LTE
Investigation of Home Agent Load Balancing, Failure Detection and Recovery in IPv6 Network-based Mobility
No full textVariations 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
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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