106,684 research outputs found
Evaluating intervention strategies in controlling coronavirus disease 2019 (COVID-19) spread in care homes : an agent-based model - Corrigendum
No full textIn the above article1, the author names should appear as follows: Le Khanh Ngan Nguyen, Susan Howick, Dennis McLafferty, Gillian H. Anderson, Sahaya J. Pravinkumar, Robert Van Der Meer and Itamar Megiddo
Hypodematium chrysolepis comb. nov. from Africa and H. eglandulosum sp. nov. from Asia (Hypodematiaceae)
No full textFan, Xue-Ping, Lu, Ngan Thi, Zhang, Liang, Zhang, Li-Bing (2021): Hypodematium chrysolepis comb. nov. from Africa and H. eglandulosum sp. nov. from Asia (Hypodematiaceae). Phytotaxa 524 (2): 99-106, DOI: 10.11646/phytotaxa.524.2.
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
A universal relation for the stress dependence of activation energy for slip in body-centered cubic crystals
No full textBy analyzing experimental data in the literature, the activation energy H for slip in body-centered cubic metals is found to approximately obey the simple relation H≈0.1 μb3(1 - t)2, where t is the applied stress normalized by the zero-temperature Peierls stress, μ is the 〈111〉 shear modulus, and b the 1/2〈111〉 Burgers vector. Such universal relation is explained by analyzing the activation processes of kink-pair generation and expansion along threefold screw dislocations using the generalized Peierls-Nabarro model [A. H. W. Ngan, J. Mech. Phys. Solids 45, 903 (1997)]. The model also predicts qualitatively the general form of the orientation dependence of Peierls stress at zero temperature. © 1999 American Institute of Physics.published_or_final_versio
Grapsus oceanicus H. Jacquinot in Hombron & H. Jacquinot 1846
No full textGrapsus oceanicus H. Jacquinot in Hombron & H. Jacquinot, 1846 (Fig. 4D) Grapsus oceanicus H. Jacquinot in Hombron & H. Jacquinot, 1846: pl. 6, figs 9, I. Metopograpsus (Grapsus) oceanicus – H. Jacquinot in H. Jacquinot & Lucas 1853: 73. CURRENT TAXONOMIC STATUS. — Metopograpsus oceanicus H. Jacquinot in Hombron & H. Jacquinot, 1846, accepted recombination (see H. Milne Edwards 1853: 132 [166]; Banerjee 1960: 189; Ng et al. 2008: 217). LECTOTYPE (designated by Castro 2011: 115). — MNHN-IU-2000-10992 (= MNHN-B10992), ♂ 32.5 × 38.1 mm, Poulo Han (= Hon Island, Papua New Guinea), coll. Hombron & Jacquinot. — Original label: “ Metopograpsus oceanicus Hombr. & Jacq., MM. Hombron & Jacquinot, Poulo Han”. PRESERVATION OF THE LECTOTYPE. — Dry. PARALECTOTYPE. — MNHN-IU-2000-1104 (= MNHN-B10992), 1 ♂ 23.0 × 26.9 mm, same data as lectotype. PRESERVATION OF THE PARALECTOTYPE. — Dry. REMARKS For authorities as cited on the plate captions or in the text of the Crustacea collected during the Voyage au Pôle Sud (1842- 1854) [Voyage to the South Pole], see Clark & Crosnier 2000: table 4; Holthuis 2002: 422.Published as part of Ng, Ngan Kee, Rodríguez Moreno, Paula A., Naruse, Tohru, Guinot, Danièle & Mollaret, Noémy, 2019, Annotated type-catalogue of Brachyura (Crustacea, Decapoda) of the Muséum national d'Histoire naturelle, Paris. Part II. Gecarcinidae and Grapsidae (Thoracotremata, Grapsoidea), with an Appendix of pre- 1900 collectors, pp. 91-130 in Zoosystema 41 (7) on pages 106-108, DOI: 10.5252/zoosystema2019v41a7, http://zenodo.org/record/372252
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
Integrated and sustainable use of water resources for maintaining ecosystems of Xuan Thuy national park
No full textDispelling 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
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
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