125,440 research outputs found
Opisthostoma secretum Maassen 2002
No full text<p> <b> <i>secretum, Opisthostoma</i> Maassen, 2002</b> </p> <p> <i>Opisthostoma secretum</i> Maassen, 2002: 179 (figs 45–46).</p> <p>Gastropoda, Diplommatinidae</p> <p> <i>Probable paratype</i>: MZSP 95917 (Fig. 2 C–D).</p> <p> <i>Locality</i>: Indonesia, West Sumatra, east of Payakumbuh, Kampung Desa Gadut, 00°15'35.1'' S, 100°44'01.1'' E, Jul. 1997.</p> <p> <i>Collector</i>: W.J.M. Maassen.</p> <p> <i>Preservation</i>: Dry.</p> <p> <i>Remarks</i>: Former Jens Hemmen Collection. Data on the specimen’s label correspond to a 20-specimen lot originally deposited in Maassen’s reference collection.</p>Published as part of <i>Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213</i> on page 47, DOI: 10.5852/ejt.2016.213, <a href="http://zenodo.org/record/3840125">http://zenodo.org/record/3840125</a>
Teracharopa goudi Maassen 2000
No full textgoudi, Teracharopa Maassen, 2000 Teracharopa goudi Maassen, 2000: 142–144 (figs 9–10). Gastropoda, Charopidae Probable paratype: MZSP 95494 (Fig. 7 A–B). Locality: Indonesia, West Sumatra, SE of Bukit Tingii, 3 km E of Lintau, Cave Gua Pangian, 00°28'19.5'' S, 100°45'11.7'' E (type locality). Preservation: Dry. Remarks: Former Jens Hemmen Collection. Locality data and measurements compare fittingly with a 20-specimen paratype series originally deposited in the authors’ reference collection (Maassen 2000). Label bears a paratype status annotation.Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on pages 25-26, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/384012
Opisthostoma christae Maassen 2001
No full textchristae, Opisthostoma Maassen, 2001 Opisthostoma (Plectostoma) christae Maassen, 2001: 52–53 (figs 3, 10–11). Gastropoda, Diplommatinidae Paratype: MZSP 95472 (Fig. 2 A–B). Locality: Malaysia, Kelantan, rd. #8, Gua Musang to Machang, the right side of km 24.9, 04°55.022' N, 102°06.934' E. Preservation: Dry. Remarks: Former Jens Hemmen Collection. Locality and measurements compare fittingly with a 20-specimen paratype lot originally deposited in Hemmen’s collection (Maassen 2001).Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 16, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/384012
Arinia panhai Maassen 2001
No full text<p> <b> <i>panhai, Arinia</i> Maassen, 2001</b> </p> <p> <i>Arinia panhai</i> Maassen, 2001: 55–56 (fig. 4, 12–13).</p> <p>Gastropoda, Diplommatinidae</p> <p> <i>Paratype</i>: MZSP 95493 (Fig. 1 C–D).</p> <p> <i>Locality</i>: Thailand, Yala Province, Kransang Cave, <i>c.</i> 2.6 off km 45.7 rd# 410 (Yala–Betong), 4 Oct. 2000.</p> <p> <i>Preservation</i>: Dry.</p> <p> <i>Remarks</i>: Former Jens Hemmen Collection. The specimen’s label bears a paratype status annotation. It is a remainder of a 45-specimen paratype lot originally deposited in Hemmen’s collection (Maassen 2001).</p>Published as part of <i>Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213</i> on page 41, DOI: 10.5852/ejt.2016.213, <a href="http://zenodo.org/record/3840125">http://zenodo.org/record/3840125</a>
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
Sinoennea otostoma Pall-Gergely, A. Reischutz & Maassen in Pall-Gergely, A. Reischutz, Maassen, Grego & Hunyadi 2020, new species
No full text<i>Sinoennea otostoma</i> Páll-Gergely, A. Reischütz & Maassen, new species <p>(Figs. 2A, 6K)</p> <p> <b>Type material.</b> Holotype (1 shell, H: 3.15 mm, D: 1.78 mm; Fig. 2A) (NHMW 113109), Laos, Vientiane Province, cave Tham Pou Kham, west of Vang Vieng, 265 m a.s.l., 18°55.601′N, 102°23.711′E, at the base of limestone rocks near the cave entrance, coll. A. Reischütz, March 2010; 1 paratype (RE/1), same data as holotype.</p> <p> <b>Diagnosis.</b> A medium-sized, glossy, ovoid species with ear-shaped (or bean-shaped) aperture.</p> <p> <b>Description.</b> Shell translucent, glass-like, ovoid. Penultimate and last whorl are widest from standard apertural view. Entire shell with 5.25–5.75 whorls. Protoconch consisting of 1.75 whorls, glossy, very finely pitted, with traces of inconspicuous wrinkles near suture. Teleoconch glossy, with inconspicuous low ribs that are weakest on the cylindrical part (“body”) of the shell. The strongest ribs are behind the peristome, and some ribs are stronger on the body than others (these are probably indications of juvenile peristomes). Individual ribs look like wrinkles or waves created by pushing the shell surface in upper (towards protoconch) direction. Aperture bean-shaped, caused by the strong sinuous depression of the palatal wall. Parietal callus rounded, does not reach half of preceding whorl, relatively thick, and not “smeared” onto preceding whorl. Apertural dentition five-fold. Parietal lamella very strong, elevated, outer portion nearly straight, slightly oblique, bent in direction of columella. Inner part of parietal lamella lower, abruptly bent in the other direction. Sinulus relatively small, elongate, opens somewhat laterally. Outer thicker, larger palatal denticles and inner smaller, more pointed palatal denticles are situated on a ridge. Columellar tooth deeply situated, elongated, but relatively short and sharp. A blunt basal tooth is situated on the lip. Peristome thickened, expanded, and slightly reflected. Basal swelling situated some distance from peristome, relatively strong. Anterior to basal swelling with an elongate depression, which corresponds with the palatal ridge. Umbilicus narrowly open, rounded or teardrop-shaped due to the swollen inner part of the body whorl, whereby the swelling corresponds to deeply situated columellar tooth.</p> <p> <b>Measurements.</b> H = 3.11–3.15 mm, D = 1.72–1.78 mm.</p> <p> <b>Differential diagnosis.</b> In Laos, the most similar species is <i>Sinoennea ljudmilena</i>, new species. The glossy shell and the bean-shaped aperture makes its identification easy.</p> <p> <b>Etymology.</b> The specific epithet is derived from the combination of the Greek words for ear and mouth, referring to the shape of the aperture.</p>Published as part of <i>Páll-Gergely, Barna, Reischütz, Alexander, Maassen, Wim J. M., Grego, Jozef & Hunyadi, András, 2020, New taxa of Diapheridae Panha & Naggs in Sutcharit et al., 2010 from Laos and Thailand (Gastropoda: Eupulmonata: Stylommatophora), pp. 1-13 in Raffles Bulletin of Zoology 68</i> on page 7, DOI: 10.26107/RBZ-2020-0001, <a href="http://zenodo.org/record/4577165">http://zenodo.org/record/4577165</a>
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
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