117,520 research outputs found
17th annual activity report of the Advisory Committee on Safety, Hygiene and Health Protection at Work 1992. COM (93) 201 final, 13 May 1993
No full textPeropyrrhicia antinorii De Bormans 1881
No full textPeropyrrhicia antinorii (De Bormans, 1881) http://lsid.speciesfile.org/urn:lsid: Orthoptera.speciesfile.org:TaxonName:8526 Figures 12, 18–22 Material examined. ETHIOPIA: Shewa, Holeta (2400 m), 21.X.1973, (1Ƌ, 1♀) (BMPC). Distribution. Endemic to Ethiopia. Taxonomy. De Bormans (1881) described the species based on a female, collected in the Shewa province, with the following characters: Subgenital plate short, wide, rectangular, hind margin widely and deeply triangularly excised, in the middle just raised (translated from Latin). The type specimen, originally preserved in alcohol at the MSNG, has been lost during World War II. We assume Ragge (1980) misinterpreted the species description of P. antinorii. He examined a series of females of which the subgenital plate had broadly divergent lobes, as depicted in Figure 67 in Ragge (1980). He considered the species description of P. antinorii by De Bormans (1881) (see above) to fit to the shape of the subgenital plate of these females. Ragge’s females were collected at the same location as the holotype of P. cooperi, described by Uvarov (1934) based on three males from Jem-Jem Forest, ca. 65 km W of Addis Ababa. This is probably the reason he considered P. cooperi as a synonym of P. antinorii. We examined a male and a female specimen of a Peropyrrhicia collected at Holeta, ca. 30 km W of Addis Ababa. The male fits to the type description of P. cooperi, with some differences. However, the subgenital plate of the female is very different than that of the females studied by Ragge to be P. antinorii, collected at Mt. Damota and depicted in Figure 67 in Ragge (1980). The lateral margins of our female specimen from Holeta are divergent instead of convergent. We interpret De Bormans’ (1881) species description differently than Ragge did, and assume that it perfectly fits to the shape of the subgenital plate of our female specimen from Holeta, in difference to that of the Mt. Damota specimen. This means the male from Holeta is the first known male specimen of P. antinorii. It would mean furthermore, that the female specimen collected at Mt. Damota, and the one used for the drawing of Ragge, do not belong to P. antinorii, but probably to P. cooperi, since those females were collected at the same site as the male holotype of P. cooperi. This also means that P. cooperi indeed is a valid species. Characters of the species. Description of the male: Pronotum saddle-shaped, tegmina longer than pronotum, not exceeding the 3rd abdominal tergite, their apical external angle very slightly less than 90°, rounded (Figure 12). Fore femora may have a single small black spine on each sub-apical ventral margin, mid femora unarmed, hind femora with 4–5 outer and 3–4 inner black spines on ventral margins. First and 2nd antennal segment black below, others blackish with yellow rings at the base. Appendage of 10th tergite widened towards the apex, which is more or less straight with acute lateral angles; one stout spine is present underneath each margin of the appendage base. At the base of the appendage, before the spine there is the 9th tergite, as one stout inflated extrusion (considered by Uvarov 1934 as supra-anal plate), that ends with two ovoid apices below the above-mentioned spine. The base of the subgenital plate is concave (Figures 18–21). Female. Same characters as the male, with the following differences. Pronotum not saddle-shaped, tegmina very reduced, lateral and not overlapped, just reaching the 2nd tergite, their apical external angle about 45°, rounded (Figure 12). The ovipositor of this species, together with that of P. cooperi, P. s c ot t i and P. m a cu l a t a, is more gently upcurved (Figure 22), compared to other Ethiopian species treated here. It has small fine denticles at both upper and lower apices. Subgenital plate with a wide base, converging apically and ending with a wide concavity. At the center of the plate a longitudinal keel is evident (Figure 22). Measurements. See Table 3. Distribution. According to Ragge (1980) the distribution of this species extends from Shewa province down to the region of Lake Abaya in the extreme north of Sidamo province, but he included also P. cooperi. Thus, actually P. antinorii is known only from the Shewa province.Published as part of Felix, Rob P. W. H. & Massa, Bruno, 2016, Orthoptera (Insecta: Tettigonioidea, Pyrgomorphoidea, Acridoidea) of Kafa Biosphere Reserve, Bale Mountains National Park and other areas of conservation interest in Ethiopia, pp. 1-59 in Zootaxa 4189 (1) on pages 14-17, DOI: 10.11646/zootaxa.4189.1.1, http://zenodo.org/record/16563
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
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
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
Letter from unknown writer to Jesse L. Boyce
No full textLetter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
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
Sarah L. Blum Author Visit - Warrior Nurse: PTSD and Healing
No full textHear Sarah L. Blum, author of Women Under Fire: Abuse in the Military, discuss her newest book, Warrior Nurse: PTSD and Healing followed by a Q&A and book signing.
Sarah L. Blum is a decorated Vietnam veteran who served as an operating room nurse during the intense fighting of 1967. In recognition of her service, she was awarded the Army Commendation Medal.
Sponsored by CWU Veterans Center and CWU Libraries.https://digitalcommons.cwu.edu/libraryevents/1252/thumbnail.jp
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