1,720,994 research outputs found
A new species of Dysmicoccus damaging lavender in French Provence (Hemiptera, Sternorrhyncha, Pseudococcidae)
No full textGermain, F., Matile-Ferrero, D., Kaydan, M. B., Malausa, T., Williams, D. J. (2015): A new species of Dysmicoccus damaging lavender in French Provence (Hemiptera, Sternorrhyncha, Pseudococcidae). Zootaxa 3980 (4): 575-583, DOI: 10.11646/zootaxa.3980.4.
Ferrisia multiformis Granara de Willink
No full textFerrisia multiformis Granara de Willink (Fig. 15) Ferrisia multiformis Granara de Willink, 1991 a: 181. This species was described and illustrated by Granara de Willink (1991) from Parthenium (Asteraceae) in Argentina based on the holotype and 10 paratype adult females (housed in IMLA, BMNH and USNM). We found no specimens of this species among the unidentified South American material that we examined. We examined the two paratype specimens housed in the USNM and noted the following diagnostic features: both pairs of ostioles are present, multilocular disc pores are present only posterior to the vulva, the dorsal enlarged tubular ducts never number more than two, the hind trochanter + femur is less than 300 µm long, with a ratio of hind trochanter + femur to tibia + tarsus of about 1.1, and the antennae are each about 400 µm long. We have modified the original illustration of the adult female of this species (Fig. 15) based on examination of the paratypes in the USNM. The original drawing showed oral-collar tubular ducts dorsally, but this appears to be an error, possibly resulting from interpreting large discoidal pores as the openings of ducts.Published as part of Kaydan, M. B. & Gullan, P. J., 2012, 3543, pp. 1-65 in Zootaxa 3543 on page 3
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
Ferrisia terani Williams & Granara de Willink
No full textFerrisia terani Williams & Granara de Willink (Fig. 19) Ferrisia terani Williams & Granara de Willink, 1992: 181. Type material examined. Paratype: 1 adult ♀, ex Citrus, ARGENTINA, Tucumán, 26.vii.1977, C. Granara de Willink (USNM). Other material examined. 2 adult ♀ (2 slides, DNA vouchers FBK015 & PG90), ex Citrus, ARGENTINA, Tucumán, S. M. de Tucumán, May 2002, M.C. Granara de Willink (BME); 1 adult ♀, ex Persea sp., MEXICO, San Antonio, 15.vi.1972, C. Parker, 4009 (USNM); 1 adult ♀, ex leaf of Eriobotrya sp., MEXICO, intercepted at Los Angeles 049882, 27.v.1985, D. Roll, 85-8491 (USNM); 2 adult ♀ (on slide with a non- Ferrisia mealybug), ex Jodina rhombifolia, URUGUAY, Colonia Suiza, H.L. Parker, received 7.ix.1944, So. Amer. Par. Lab., 869-10 (USNM); 2 adult ♀ (2 slides), ex Vaccinium ashei, USA, Florida, Hawthorne, 21.xi.1997, J. Beckwith, E97-4417 (FSCA). Other material of doubtful identity (not totally typical of F. terani): 1 adult ♀, ex Opuntia sp., MEXICO 18.ii.1993, H. Griab, El Pugo 42832, 93 03393 (USNM). This female has wider enlarged tubular ducts (width at duct mid-length: 6.0–7.3 µm on head; 7.0–8.3 µm on posterior abdomen) than typical specimens of F. terani (see below), but the ducts may have been distorted by overheating in KOH during clearing. The antennae (ca. 700 µm long) and legs of this Mexican specimen also are slightly longer than these appendages on the paratype of F. terani that we examined. This species was described from citrus and cassava in Argentina and Guatemala (Williams & Granara de Willink 1992). Other collections (listed above) suggest that the species is quite widespread in South America and Mexico and also polyphagous, with host-plant records from Ericaceae, Euphorbiaceae, Lauraceae, Rosaceae, Rutaceae and Santalaceae, and perhaps also Cactaceae if the female from Opuntia belongs to this species. The adult female is described and well illustrated in the original description (redrawn and modifed here, Fig. 19). It resembles the adult female of F. malvastra in having multilocular pores around the vulva only (fewer than 9 pores for F. terani) and having narrow dorsal enlarged tubular ducts, with a shaft diameter of 4.0–5.0 µm at mid-length (unless the specimen has been over-cleared in KOH, which distorts duct width), with the ducts narrower on the head than on the abdomen. The adult female of F. terani can be distinguished from that of F. malvastra by its slender body shape (body broadly oval for F. malvastra) and by having the dorsal enlarged tubular ducts on the posterior abdominal segments with the associated setae situated inside a large sclerotised area surrounding each duct (setae usually situated on the edge of a small sclerotised area surrounding each duct in F. malvastra).Published as part of Kaydan, M. B. & Gullan, P. J., 2012, 3543, pp. 1-65 in Zootaxa 3543 on page 4
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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