1,721,028 research outputs found
FIGURE 1. Sonerila veldkampiana A. Habit. B. Flower bud. C. Flower. D. Stamen. E. Fruit. F in A new species of Sonerila Roxb. (Melastomataceae) from Kerala, India
No full textFIGURE 1. Sonerila veldkampiana A. Habit. B. Flower bud. C. Flower. D. Stamen. E. Fruit. F. Seed. Drawings by Jayesh P. Joseph from living specimens.Published as part of Ratheesh Narayanan, M. K., Mini, V., Shaju, T., Sujana, K. A., Joseph, Jayesh P., Alfarhan, Ahmed H. & Sivadasan, M., 2013, A new species of Sonerila Roxb. (Melastomataceae) from Kerala, India, pp. 55-60 in Phytotaxa 110 (1) on page 57, DOI: 10.11646/phytotaxa.110.1.5, http://zenodo.org/record/507875
Impatiens theuerkaufiana (Balsaminaceae), a new scapigerous species from the Western Ghats, India
No full textRatheesh Narayanan, M. K., Joseph, Jayesh P., Kumar, N. Anil, Sivadasan, M., Alfarhan, Ahmed H. (2013): Impatiens theuerkaufiana (Balsaminaceae), a new scapigerous species from the Western Ghats, India. Phytotaxa 83 (1): 54-60, DOI: 10.11646/phytotaxa.83.1.3, URL: https://www.mendeley.com/catalogue/c21e2a7b-e5a3-38ab-9e6d-9ab44f042955
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
A new species of Sonerila Roxb. (Melastomataceae) from Kerala, India
No full textRatheesh Narayanan, M. K., Mini, V., Shaju, T., Sujana, K. A., Joseph, Jayesh P., Alfarhan, Ahmed H., Sivadasan, M. (2013): A new species of Sonerila Roxb. (Melastomataceae) from Kerala, India. Phytotaxa 110 (1): 55-60, DOI: 10.11646/phytotaxa.110.1.5, URL: http://dx.doi.org/10.11646/phytotaxa.110.1.
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
Dynamics of soil microarthropod populations affected by a combination of extreme climatic events in tropical home gardens of Kerala, India
No full textClimate change is predicted to increase drought and flooding events in the coming decades, especially in the tropics; we need to understand the short-term responses of plant community and soil microarthropods populations to these extreme events.Yet most of our current knowledge on this comes from manipulative studies in temperate regions. The present study reports the impact of a severe summer drought followed by a catastrophic flood in 2018 on soil microarthropod density and biological soil quality across 25 tropical home gardens. Drought reduced the density of organisms six-fold and flooding caused a further threefold reduction. Biological soil quality in the home gardens that were not flooded was restored during the monsoon season but this was just partially possible for microarthropod population size. Three months after flooding, the microarthropod groups encountered were generally able to re-establish their population to the condition prior to flooding. However, none of the group recovered to the mean seasonal values. The severity of previous drought seemed to have overridden any possible adaptation to annual summer water scarcity. Plant species richness in home gardens played a key role towards mitigation and possible resilience to disturbance of these ancient agroecosystems. The capacity of the soil microarthropod communities to recover over the long term after extreme climatic events and its relevance to maintaining ecosystem functions and services in home gardens through soil fertility warrant further investigation
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