1,356,232 research outputs found
The (restricted) Inomata-McKinley spinor representation and the underlying topology
No full textThe so-called Inomata-McKinley spinors are a particular solution of the non-linear Heisenberg equation. In fact, free linear massive (or massless) Dirac fields are well known to be represented as a combination of Inomata-McKinley spinors. More recently, a subclass of Inomata-McKinley spinors was used to describe neutrino physics. In this paper we show that Dirac spinors undergoing this restricted Inomata-McKinley decomposition are necessarily of the first type, according to the Lounesto classification. Moreover, we also show that these type-one subclass spinors have not an exotic counterpart. Finally, implications of these results are discussed, regarding the understanding of the spacetime background topology
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Informe del Proyecto Arqueológico Usumacinta Medio: Temporada 2024
No full textThis item in the Maya Archaeology collections has been made available by University of Arizona faculty and the University Libraries. No further reproduction, modification or distribution allowed without specific permissions. Please contact Professor Takeshi Inomata for permissions and questions, [email protected]
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Informe del Proyecto Arqueológico Usumacinta Medio: Temporada 2023
No full textThis item in the Maya Archaeology collections has been made available by University of Arizona faculty and the University Libraries. No further reproduction, modification or distribution allowed without specific permissions. Please contact Professor Takeshi Inomata for permissions and questions, [email protected]
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
Information and communication in the Amazon: epistemological crossings
No full textA obra "Informação e Comunicação na Amazônia: Travessias epistemológicas", organizado por docentes do Programa de Pós-Graduação em Informação e Comunicação (PPGIC), organizada pelos docentes do PPGIC, professores doutores Danielly Oliveira Inomata, Renan Albuquerque, Célia Regina Simonetti Barbalho e Cristiane de Lima Barbosa. A obra que tem como objetivo apresentar a construção epistemológica do objeto das pesquisas em andamento dos discentes do PPGIC, é publicada pela Editora da Universidade Federal do Amazonas (EDUA) e Alexa Cultural, com apoio da Fundação de Amparo à Pesquisa do Estado do Amazonas (FAPEAM). A obra é composta por 16 capítulos de livros, sendo 8 (oito) de cada
linha de pesquisa do PPGIC: Linha 1. Gestão da Informação e Comunicação; e Linha 2. Comunicação, Informação e Cultura. A coletânea apresenta capítulos de livros escritos por discentes, docentes e pesquisadores vinculados ao PPGIC.FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas1Nã
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Infrared spectroscopy of phenol+-triethylsilane dihydrogen-bonded cluster: intrinsic strength of the Si-H…H-O dyhydrogen bond
No full textDihydrogen bond is known to be one of the unconventional hydrogen bonds. When a hydrogen atom is bonded to an electropositive atom, such as B, Al, and so on, the hydrogen atom has a partial negative charge. Then, a hydrogen-bond type interaction are formed between the oppositely charged two hydrogen atoms. This interaction is called a dihydrogen bond. In the previous study, we reported the infrared spectroscopy of neutral phenol (PhOH)-triethylsilane (TES) clusterfootnote{H.~Ishikawa, T.~Kawasaki, RJ02, the 68th International Symposium on Molecular Spectroscopy (2013)}. It was suggested that the Si-HH-O dihydrogen bond should be as strong as the -type hydrogen bond. In the present study, to investigate the intrinsic strength of the Si-HH-O dihydrogen bond, infrared photodissociation spectroscopy on the PhOH-TES and PhOH-diethylmethysilane (DEMS) cationic clusteris was carried outfootnote{H.~Ishikawa, T.~Kawasaki, R.~Inomata, textit{J.~Phys.~Chem.~A} textbf{119}, 601 (2015).}.par
Both of the clusters exhibit a very broad and intense band centered at about 2860,cm. This band is assigned as the OH stretching band of the PhOH moiety. Based on the amount of the red-shift of the OH stretching band and the results of the theoretical calculations, the intrinsic strength of the Si-HH-O dihydrogen bond is evaluated to be stronger than that of the -type hydrogen bond. The proton affinities of TES and DEMS estimated by the theoretical calculation are larger than those of benzene and ethylene. These results are consistent with our experimental observations.Made available in DSpace on 2016-01-05T20:04:39Z (GMT). No. of bitstreams: 3
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Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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