186,175 research outputs found
Length and Rapid Elongation of Pedicels of the Female Flowers of Cucumis anguria L.
No full textOur recent work describing Cucumis zambianus Widrlechner, J.H. Kirkbr., Ghebretinsae & K.R. Reitsma, a new species from Zambia, led us to spend considerable time documenting inflorescence characteristics in this new species and comparing them to other, similar Cucumis taxa (10). Cucumis zambianus and C. anguria share a trait that is rather unusual, pedicels that are often considerably longer than the fruits they subtend. However, in C. zambianus, the pedicels are of considerable length (65-120 mm) at the time that female flowers open (10), while C. anguria is reported by some authors (but not others) to have much shorter pedicels at that developmental stage, with elongation evidently occurring rapidly (8) during the course of fruit maturity. Kirkbride (7) indicated that the pedicels of female flowers of C. anguria are initially quite short, ranging from 1.5 to 7 mm, but other authors, including Howard (3) and Jeffrey (4-6) reported much longer pedicels, from 13 to 105 mm.This article is from Cucurbit Genetics Cooperative Report 31-32 (2008-2009): 36.</p
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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
BIODEGRADAÇÃO DE COPOLÍMERO ACRÍLICO-ESTIRENADO COM REDUÇÃO DE EFEITO TÓXICO EM CUCUMIS ANGURIA L.
No full textSynthetic polymers offer several industrial applications, however their persistence in the environment denotes a challenge. This work assessed the use of an acrylic-styrene copolymer (ASC) as the sole of carbon by Pseudomonas aeruginosa TGC04 and the ecotoxicological effects of the metabolites on germination and development of Cucumis anguria L. (Gherkin). The experiment was carried out in flasks containing minimal mineral medium added with ASC 1% and incubated for 72h at 30ºC. The contaminant reduction was 5,01%, determined by gravimetry. Compared to the control, it resulted in a partial recovery of plant development and demonstrated a significant difference in root biomass (p=0.041) and a tendency to significance in the aerial part biomass (p=0.065), i.e., stem and leaves. In conclusion, P. aeruginosa TGC04 showed potential for use in bioremediation....Polímeros sintéticos oferecem diversas aplicações na indústria, mas sua persistência no ambiente representa um desafio. Este trabalho avaliou a utilização de um copolímero acrílico-estirenado (CAE) como fonte de carbono por Pseudomonas aeruginosa TGC04 e os efeitos ecotoxicológicos dos metabólitos sobre a germinação e desenvolvimento de Cucumis anguria L. (maxixe-do-norte). O experimento foi realizado em frascos contendo meio mineral mínimo adicionado com CAE 1%, e incubado por 72h à 30ºC. A redução do contaminante foi de 5,01%, determinada por gravimetria. Isto resultou na recuperação parcial do desenvolvimento da planta, comparada ao controle, demonstrando uma diferença significativa na massa da raiz (p=0,041) e tendência à significância na massa da parte aérea (p=0,065), i.e., caule e folhas. Como conclusão, P. aeruginosa TGC04 exibiu potencial para uso na biorremediação
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
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
Dr. Edward P. Wimberly, ITC, July 2011
No full textThis video is a conversation with Dr. Edward P. Wimberly. Dr. Wimberly talks about his book, "No Shame in Wesley's Gospel: A Twenty-First Century Pastoral Gospel". Brad Ost, AUC Woodruff Library, is the interviewer
Author Rights and Scholarly Publishing
No full textOriginally posted at
http://blog.library.gsu.edu/2014/10/24/author-rights-and-scholarly-publishing/</p
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
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