130,525 research outputs found
Dissorhina uludagensis Ayyildiz & Toluk & Taskiran 2010, n. sp.
No full text<i>Dissorhina uludagensis</i> n. sp. <p>(Figures 4-6)</p> <p>Diagnosis — Rostral apex triangular, conspicuously protruding from the rostral part of prodorsum. Incisure wide, lateral teeth much shorter than the median teeth and sharped. Two pairs of weak transversal costulae present. Sensilli fusiform, as long as 70% of the length of prodorsum (42 µm in length), its head some minute aciculae.</p> <p>Dimensions — Length: 204-228 (holotype: 212) µm, width: 104-120 (holotype: 104) µm (n=9).</p> <p>Prodorsum — (Figures 4a and 5) — Rostral apex triangular, conspicuously protruding from the rostral part of prodorsum. Incisures wide, lateral teeth much shorter than the median teeth and sharped. Rostral setae 10 µm in length, arising on this triangular apex. Two pairs of weak transversal costulae present. Lamellar and inter-lamellar setae smooth. Bothridia round, with small opening. Sensilli fusiform, as long as 70% of the length of prodorsum (42 µm in length), its head some minute aciculae.</p> <p> Notogaster (Figures 4a and 5a) — Longer than wide, ratio 1.5:1. Anterior part well narrowed anteriorly, a short median part straight. Ten pairs of comparatively smooth notogastral setae present. The setae <i>c2</i> and <i>p</i> series short, thin, 12 and 6 µm in length respectively, the remaining notogastral setae smooth, long 20 µm in length.</p> <p> Ventral Side (Figure 4b) — Labiogenal articulation arched. Epimeral borders distinctly visible and strongly sclerotized. Epimeral setal formula 3-1-3-3, setae thin, short and smooth. Genital plates 24 µm in length, 24 µm in width, with five pairs of smooth setae, setae <i>g1</i> longest, the remaining setae equal in length. Anal plates 34 µm in length, 32 µm in width, with two pairs of smooth, short setae. Distance between genital and anal plates 36 µm. One pair of aggenital and three pairs of adanal setae. Lyrifissures <i>iad</i> 4 µm in length, paraanal, anterior of <i>ad2</i>. The adanal setae <i>ad 1</i> in postanal, <i>ad 2</i> in paraanal and <i>ad 3</i> in preanal positions.</p> <p>Legs — Formula of leg setation (trochanter to tarsus): I (1-5-2+1-4+2-17+2); II (1-5-1+1-3+1-14+2); III (2-3-1+1-3+1-12); IV (1-2-2-3+1-10). Structure and setation of legs as shown in Figure 6.</p> <p>Material examined — Holotype (ZMEU: 255) and ten paratypes (ZMEU: 256-265), one of them were mounted on aluminum stubs and gold-coated for scanning electron microscopy, collected from soil and litter under fir trees, Uludaǧ Mountain (40°08’.13" N, 29°06’.21" E), Bursa, Turkey, 1634 m, 07 July 2008.</p> <p> Etymology — Specific name " <i>uludagensis</i> " is named after the locality, Uludaǧ Mountain, Bursa, Turkey, where the new species was found.</p> <p> Remarks — This new species stands very near to <i>Dissorhina longispina</i> Mahunka, 2006 by the shape and length of sensilli (Mahunka 2006). However, it is distinguished from it by the following features: 1) two pairs of short transversal costulae present, not starting from the bothridia in the new species (one pair of short costulae present, starting from the bothridia in <i>D. longispina</i>; 2) lamellar setae arising from anterior of transversal costulae (lamellar setae far beyond of costulae in <i>D. longispina</i>); 3) sensillus fusiform, its head some minute aciculae in the new species (sensillus lanceolate, its head smooth in <i>D. muranyii</i>) 4) body measurement in the new species: 204-228 / 104-120 µm (body measurement in <i>D. muranyii</i>: 290-301 / 140-147 µm).</p>Published as part of <i>Ayyildiz, N., Toluk, A. & Taskiran, M., 2010, TWO NEW SPECIES OF OPPIID MITES (ACARI: ORIBATIDA) FROM TURKEY Nusret A, Ay ¸ se T and Mehmet T, pp. 13-20 in Acarologia 50 (1)</i> on pages 18-20, DOI: 10.1051/acarologia/20101956, <a href="http://zenodo.org/record/4666988">http://zenodo.org/record/4666988</a>
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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
Scholarly Communication and Publishing Lunch and Learn Talk #11: The ULS Open Access Author Fee Fund
No full textAt the May 2014 talk, you will learn about the ULS Open Access Author Fee Fund--what it is, why we do it, how it works, and how the program is going so far
The R&D Tax Incentives
No full textThis article sets out some background information and reflections of the author on the R&D tax incentive schemes included in the Common Corporate Tax Base (CCTB) Proposal. In particular the author analyzes the stimulus to private R&D through ad hoc tax incentives included in the CCTB Proposal and dives into the actual provisions included in the Proposal highlighting the most relevant issues connected with their design and interpretation. Moreover, the author explores the interaction between the CCTB Proposal and the granting by Member States of domestic R&D tax incentives
- …
