1,720,963 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Generic Constructions of Different Cryptographic Primitives over Various Public Key Paradigms.
No full textIn this thesis, we study the generic construction of some cryptographic primitives over various public key paradigms like traditional Public Key Cryptosystems and Identity Based Cryptosystems. It can be broadly divided into two categories1. Generic construction of some highly secure cryptographic primitives from less secure cryptographic primitives, and2. Generic construction of some complex cryptographic primitives from basic cryptographic primitives. Mathematical tools provide a way to achieve cryptographic functionality like confidentiality, authentication, data-integrity, non-repudiation etc., but in the case of complex cryptographic functionality like achieving confidentiality and authentication at the same time or confidentiality, authentication and non-repudiation at the same time etc., proper combination of basic cryptographic tools is desired. Achieving complex cryptographic primitives using mathematical tools directly leads to a tedious job whereas breaking the combination of functionalities into smaller and basic functionalities and then using the basic primitives and then joining them in a proper manner for achieving the desired functionality is somewhat more methodical approach which, in result, helps in analysing the security in better and easier manner. Being a more methodical way, it has not only the theoretical importance but also has a vast practical utility. It can be analogously compared as constructing a structure using bricks, cement and steel rods.Public Key cryptosystem took birth from the seminal paper by Diffie and Hellman [36] in the year 1976. It is also known as Asymmetric Key cryptosystem due to the nature of keys. In this cryptosystem, both parties which are communicating have different keys in contrast to Symmetric Key cryptosystem in which both parties have the same key. Although one key exchange protocol was proposed based on one hard assumption that is known as computational Diffie-Hellman assumption derived from the names of proposer, no public key scheme was proposed. Crypto community had to wait till 1978 when Rivest, Shamir and Adleman (RSA) [81] proposed the first public key encryption (PKE) and signature (PKS) scheme which is popularly known as RSA encryption and RSA signature scheme respectively which were based upon another hard assumption which is known as RSA assumption. In the sameyear, McEliece [70] proposed another PKE using Goppa code which is known as McElice encryption scheme based on McEliece assumption. But the simplicity of RSA gave it much more popularity than McElice. Again in the year 1985, ElGamal [39] proposed another PKE based on computational Diffie-Hellman assumption which is known as ElGamal encryption scheme. Since then, many encryption and signature schemes have been proposed. In commercial purpose protocols like secure socket layer (SSL) [42], PKE is used for exchanging the session keys. Amongst all public key encryption schemes, RSA is the most popular and widely used.The issue of online key exchange, an essential step in the symmetric key cryptosystem, was solved by the advent of public key cryptosystem, but it required a proper key management [4]. In the year 1984, to simplify key management, Shamir proposed Identity based cryptosystem [85]. In this cryptosystem, the unique identity (such as email-id, social security number etc.) of user is used as the public key whereas the secret key is generated by a trusted third party called Private Key Generator (PKG)
Shuffling towards mathematics: UNO as a classroom tool
Get PDFUNO is a card game loved by people of all ages worldwide. Known for its vibrant colours, simple rules, and fast-paced gameplay, it has become a staple in most family gatherings and school breaks. But beyond the fun and excitement, UNO holds hidden potential as an engaging educational tool, particularly in teaching and learning mathematics. This article explores my experience of students playing an UNO multiplication game, and how teachers can creatively use UNO cards to teach mathematics
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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