126,526 research outputs found
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
Adelopsis simoni
No full textP. simoni (Portevin, 1903a: 167) (Catops), 1914a: 193 comb. (to Pseudonemadus); Jeannel, 1936: 66 comb. (to Adelopsis, not stated as taxonomic change) [but see Notes 1 and 3]; Szymczakowski, 1968: 14 [but see Notes 1 and 4]; Gnaspini, 1996: 538 comb. (holotype seen); Gnaspini & Peck, 2019: 49 (holotype and topotypes seen). Holotype female [a single specimen in original description, assumed as holotype] in MNHN [original description refers to [probably] Grouvelle collection; Jeannel, 1936 refers to Pic collection]. Type locality: Colonia Tovar [as “Towar” in Jeannel, 1936], [Aragua State], Venezuela. Distribution: Venezuela: Aragua State: known only from type locality. Note 1: Specimens and records of Jeannel (1936: 66) BMNH (Brazil: São Paulo) and Szymczakowski (1968: 14) MNHN (Venezuela: Aragua: Rancho Grande) and NMPC (Mexico: Coatepeque) actually belong to three different species (Gnaspini, 1996: 540). They refer to P. jeanneli, P. aragua, and P. coatepec (Gnaspini & Peck, 2019: 50, 53, 54, 55). Note 2: The record in Szymczakowski (1963: 671) (NMPC specimens, Brazil: São Paulo) was considered a misidentification of P. claudicans (Szymczakowski) [1980] in Gnaspini (1996: 540), but Gnaspini & Peck (2019: 50, 52) discuss that it may refer to a different (probably undescribed) species, but it is certainly a misidentification. Note 3: Jeannel, 1936 Figs. 79 and 97 refered to the illustrated male as “from Venezuela ”, but he had 1 female from Venezuela and 1 male from Brazil; therefore at least Fig. 97 (if not both) refers to the male from Brazil, and not from Venezuela, as already mentioned in Szymczakowski (1968: 14). This male illustrated does not belong in P. simoni (see Note 1). It refers to P. jeanneli (Gnaspini & Peck, 2019: 50, 55). Note 4: Szymczakowski (1968: 14) also adds a discussion about the high variability in P. simoni, which is due to misidentification (as discussed in Gnaspini, 1996, and highlighted in the Notes above). None of the figures refers to P. simoni (see Notes 1 and 2). Note 5: The record in Salgado, 2014a: 16 (Peru) was considered a misidentification in Gnaspini & Peck (2019: 50). It refers to P. consuelo (Gnaspini & Peck, 2019: 50, 55).Published as part of Peck, Stewart B., Gnaspini, Pedro & Newton, Alfred F., 2020, Updated catalog and generic keys of the Leiodidae (Insecta: Coleoptera) of the Neotropical region (" Latin America ": Mexico, the West Indies, and Central and South America), pp. 1-114 in Zootaxa 4741 (1) on pages 55-56, DOI: 10.11646/zootaxa.4741.1.1, http://zenodo.org/record/377289
Cyrba simoni Wijesinghe 1993
No full textCyrba simoni Wijesinghe, 1993 Cyrba simoni: Wijesinghe 1993: 136; Wanless 1984 b: 461–463, figs 10 A–L (sub C. bimaculata); Wesołowska & Russell-Smith 2000: 20–21, figs 20–24. Material examined: BURUNDI: 1 ♀ (MRAC, 213879), Cabara, miombo woodland with Brachystegia, by hand, ca 850 m, 23.iv. 2002, N. Benoit; 1 ♂ (MRAC, 213828), Nkayamba, miombo woodland with Brachystegia, by hand, ca 850 m, 23.v. 2002, N. Benoit. Distribution: This is a widespread Afrotropical species, known from Nigeria and Cameroon to Tanzania and Angola in the south (Wanless 1984 b; Wesołowska & Russell-Smith 2000).Published as part of Azarkina, Galina N. & Logunov, Dmitri V., 2010, New data on the jumping spiders of the subfamily Spartaeinae (Araneae: Salticidae) from Africa, pp. 163-182 in African Invertebrates 51 (1) on page 170, DOI: 10.5733/afin.051.010
Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae)
No full textMetaltella simoni (Keyserling) is a relatively recent introduction to the Florida spider fauna. Although it is generally inconspicuous, M. simoni may be a threat to extirpate the Florida population of our native amaurobioid species, Titanoeca brunnea Emerton. This document is EENY-322 (originally published as DPI Entomology Circular 354), one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: May 2004.
EENY322/IN597: Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae) (ufl.edu
Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae)
No full textMetaltella simoni (Keyserling) is a relatively recent introduction to the Florida spider fauna. Although it is generally inconspicuous, M. simoni may be a threat to extirpate the Florida population of our native amaurobioid species, Titanoeca brunnea Emerton. This document is EENY-322 (originally published as DPI Entomology Circular 354), one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: May 2004.
EENY322/IN597: Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae) (ufl.edu
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
Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae)
No full textMetaltella simoni (Keyserling) is a relatively recent introduction to the Florida spider fauna. Although it is generally inconspicuous, M. simoni may be a threat to extirpate the Florida population of our native amaurobioid species, Titanoeca brunnea Emerton. This document is EENY-322 (originally published as DPI Entomology Circular 354), one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: May 2004.
EENY322/IN597: Cribellate Spider, Metaltella simoni (Keyserling) (Arachnida: Araneae: Amphinectidae) (ufl.edu
Equivalence among fermion symmetry-multiplets and choice of the simmetry group for strong interactions.
No full textY chromosome microdeletion screening in infertile men
No full textMolecular analysis of Y-chromosomal microdeletions is routinely performed in the work-up of male infertility, in order to establish a diagnosis and for genetic counseling of the couple, since such microdeletions are transmitted to the male offspring. The review of published data shows that microdeletions are relatively common in patients with azoospermia or severe oligozoospermia, with wide variations in the reported deletion frequency depending mainly on the selection criteria. In general, patients with proximal deletions, involving the AZFa and/or the AZFb region show severe defects of spermatogenesis with a high prevalence of Sertoli cell only syndrome, while deletions of the distal AZFb and of the AZFc region can be compatible with residual spermatogenesis. Microdeletions have been only sporadically found in normozoospermic patients. For the time being the molecular analysis of microdeletions of the Y chromosome is indicated in infertile patients with sperm concentration <5 x 10(6)/ml and in men undergoing assisted reproduction techniques, since the genetic defect and, most probably, the related infertility problem will be transmitted to the sons
Ixchela simoni HUBER 2000
No full textIxchela simoni (O. Pickard-Cambridge, 1898), new combination Coryssocnemis simoni O. Pickard-Cambridge, 1898: 237 238; pl. 31, figs. 9, 9a f. F. O. Pickard-Cambridge, 1902: 371; pl. 35, figs. 7, 7a b. Strand, 1914: 820 (see below). Gertsch, 1971: 56. Only the female has been described, but the AMNH has males and females from various localities in central Mexico (Queretaro, Hidalgo, Michoacan, Guerrero). Strand s (1914) Colombian record of the species resulted very probably from the misidentification of a Priscula species.Published as part of HUBER, BERNHARD A., 2000, New World Pholcid Spiders (Araneae: Pholcidae): A Revision At Generic Level, pp. 1-348 in Bulletin of the American Museum of Natural History 2000 (254) on page 153, DOI: 10.1206/0003-0090(2000)2542.0.CO;2, http://zenodo.org/record/535082
- …
