1,721,215 research outputs found
‘«Baby s p'esami»: V razvitie nekotorykh siuzhetov knigi D. Rayfielda Zhizn' Antona Chekhova’
No full textDNA barcoding of phytoplasmas: a tool for their fast identification
Get PDFn the frame of the EU FP7 project QBOL the traditional phytoplasma classification based upon molecular phylogeny of the 16S rRNA was employed to generate a barcode system that was implemented by adding two more genes tuf and secA. Sequences from a wide range of phytoplasmas representing the most relevant ‘Candidatus Phytoplasma species’ were generated and deposited in a dedicated database (Q-Bank). Phylogenetic analysis of all the genes used for barcoding has revealed full congruence and concordance with the one obtained by conventional 16S rDNA, indicating that the system can be used for a cost effective and fast phytoplasma identification
Q-bank Phytoplasma: a DNA bar-coding tool for phytoplasma identification
Get PDFDNA barcoding is an identifi cation method based on comparison of a short DNA sequence with known
sequences from a database. A DNA barcoding tool has been developed for phytoplasma identifi cation.
This phytoplasma DNA barcoding protocol based on the tuf gene has been shown to identify phytoplas-
mas belonging to the following groups: 16SrI, 16SrII, 16SrIII, 16SrIV, 16SrV, 16SrVI, 16SrVII, 16SrIX,
16SrX, 16SrXI, 16SrXII, 16SrXIV, 16SrXX, and 16SrXXI
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
Incorporation of nuclear matrix attachment elements into the Herpes Simplex virus type 1 genome does not induce long term expression of a foreign gene during latency.
No full textIncorporation of nuclear matrix attachment elements into the Herpes Simplex virus type 1 genome does not induce long term expression of a foreign gene during latency
No full textDispelling 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
- …
