1,720,987 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
from South Africa
No full textPhragmope discrepans (Lithothamnion discrepans) is recognized as a new monotypic genus endemic to South Africa on account of several active modes of growth, including apical meristem replacement, production of cell bars in canals of multiporate conceptacles, and development of a second compact, imperforate roof over multiporate conceptacles. Meristem replacement involves up to three layers. Development of cell bars starts with production of projecting cells from basal cells of lining filaments, and these cells subsequently coalesce to form a barrier. Subepithallial divisions produce a second compact roof that is composed of 1-2 perithallial cells and a layer of epithallial cells. It is assumed that these novelties reflect evolutionary advancements to overcome competion and the environmental pressure that Phragmope experiences in the intertidal zone. The new genus is taxonomically distant to the Northern Hemisphere genus Mesophyllum, and relates closer to taxa from the Southern Hemisphere, including Melyvonnea that occurs in South Africa and species of Mesophyllum sensu lato from Chatham-New Zealand-Australia, which collectively display a reduced fusion cell and lack of a pedestal in carposporangial conceptacles. Previous molecular studies based on SSU rDNA sequences and including an isolate of 'M. engelhartii' from South Africa support the same view. It is shown that the name 'Fam.Mesophylleae Dum.' Heeg [1891. Niederosterreiehische Lebermoose.- Verhandl. der k.k. zool.-botan. Gesellsch. in Wien 41:567-573] in Leverworts is invalid. Hence Mesophyllaceae Athanasiadis [2016. Phycologia Europaea Rhodophyta, Vols 1 & 2. Published by the author, Gothenburg. xlviii + 1504 pages] is available in the Corallinales (including Hapalidiales), while Mesophyllumaceae Schneider & Wynne (2019. Fourth addendum to the synoptic review of red algal genera. Botanica Marina. 62:355-367) becomes a later synonym
Saint Sava Nemanjić as a Messenger and Founder of the Eastern Church Tradition in the Serbian Church
Full text linkΟ άγιος Σάββας Nemanjić ως θεμελιωτής της ανατολικής εκκλησιαστικής παράδοσης στην Σερβική Εκκλησία Δεν υπάρχει αμφιβολία πως η ηγετική φυσιογνωμία του Αγίου Σάββα Nemanjić αποτελεί την κορωνίδα της εκκλησιαστικής ζωής του σερβικού γένους. Υποδειγματικός μοναχός του Αγίου Όρους έδειξε από τα πρώτα βήματα της μοναστικής του πολιτείας ότι ήταν σαφής ο προσανατολισμός του στην ανατολική εκκλησιαστική παράδοση. Απόδειξη της βαθιάς αυτής σχέσης αποτελεί η ίδρυση της Μονής Χιλανδαρίου ως μίας μονής που λειτούργησε ως πρότυπο της Σερβικής Εκκλησίας. Βασικό στοιχείο της απόφασης αυτής αποτέλεσε χωρίς αμφιβολία η αναγνώριση της βαθιάς πνευματικότητας του Αγίου Σάββα ως γνήσιου εκφραστή της ανατολικής παράδοσης στο δόγμα, στη λατρεία, στη διοίκηση, στην τέχνη και στη ζωή της Εκκλησίας. Οι λατρευτικές εμπειρίες του μοναχού Σάββα από τη μονή του Χιλανδαρίου και από την αγιορειτική παράδοση εν γένει, τον οδήγησαν στην διαμόρφωση και υιοθέτηση του ανατολικού λατρευτικού τυπικού. Στην σύνταξη του Τυπικού αυτού επηρεάστηκε από εκκλησιαστικούς άνδρες της Θεσσαλονίκης, της Κωνσταντινούπολης και των Ιεροσολύμων. Η μετάφραση του Νομοκάνονα του Φωτίου (Krmčija) αποτελεί μία χαρακτηριστική έκφραση επιλογής του Σάββα για την υπό σύσταση εκκλησία του. Το πνευματικό απόσταγμα αυτής της θεολογικής πράξης που εφάρμοσε αποτυπώνεται σήμερα ως παρακαταθήκη στον λεγόμενο Αγιοσαββισμό (Svetosavlje). Για τον λόγο αυτό ήδη από τους μεσαιωνικούς χρόνους αναγνωρίσθηκε ως prosvetitelj-φωτιστής και καταξιώθηκε ως αυθεντικά βυζαντινός και αγιορείτης άξιος συνεχιστής της παράδοσης των ισαποστόλων Κυρίλλου και Μεθοδίου και των διαδόχων τους
Revision of Dawson's collections referred to Lithothamnion lamellatum (Melobesioideae, Corallinales, Rhodophyta)
No full textCarlskottsbergia antarctica (Hooker fil. & harv.) gen. & comb. nov., with a re-assessment of synarthrophyton (mesophyllaceae, corallinales, rhodophyta)
No full text- Carlskottsbergia antarctica gen. & comb.nov., considered to be a distinct species for more than a century and more recently subsumed in the broad concept of Synarthrophyton patena, is segregated possessing monostromatic hypothallium (polystromatic in Synarthrophyton), and tetrasporophytes with straight to pyriform canals (larger conical canals in Synarthrophyton). Male conceptacles develop lunate, unbranched spermatangial mother cells (SMCs) on the floor, the walls and the roof (either unbranched, or branched-dendroid SMCs, or hermaphroditic in Synarthrophyton). Carpogonial branches are two-or three-celled and post-fertilization stages involve a fusion cell that incorporates at least one hypogynous and neighboring supporting cells, leaving adjacent hypogynous cells intact. Gonimoblast filaments radiate incorporating the cytoplasm of peripheral hypogynous cells and cut off carposporangia from the periphery of the fertile zone that occurs on a flattened chamber floor (as in Synarthrophyton). Carlskottsbergia antarctica is widely distributed, including localities in southern Chile and southern Argentine, the Falklands, and co-occurring with S. patena in New Zealand and the Aucklands. The circumscription of Synarthrophyton is restricted to include the generitype S. patena from New Zealand and the Aucklands, and species from southern Australia (the latter differing in developing branched-dendroid SMCs and a larger thallus). © 2018 J. Cramer in Gebrüder Borntraeger Verlagsbuchhandlung, Stuttgart, Germany
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