93,446 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
Allocearagryllus leipnitzi Martins-Neto, n. comb.
No full text<i>Allocearagryllus leipnitzi</i> Martins-Neto, n. comb. <p>(Fig. 1 C)</p> <p> 1. <i>Notocearagryllus leipnitzi</i> Martins-Neto, 2002 b</p> <p> <b>Etymology.</b> In honor of the foraminiferologist Prof. Dr. Itamar Ivo Leipnitz (UNISINOS-RS).</p> <p>Holotype. RGMN-T029, Martins-Neto Collection, housed at the Sociedade Brasileira de Paleoartropodologia – SBPr.</p> <p> Type locality, type stratum and age. As for <i>Notocearagryllus dutrae</i> Martins-Neto.</p> <p> <b>Diagnosis.</b> As for the genus.</p> <p> <b>Description</b> (Holotype, Fig. 1 C). Male tegmen 25 mm long as preserved (around 2/3 of the probable total length). <b>RP</b>, <b>CuA</b> and pre-lanceolate cell partially preserved. Speculum fairly square, with the anterior margin slightly curved than the posterior one. Anterolateral margin as long as the posterolateral one. <b>sp1</b> reaches the distal part of the posterior margin and the apical part of the anterolateral margin, parallel to the anal margin, converging on <b>sp2</b>; <b>sp2</b> reaches the distal part of the posterolateral margin and the apical part of the anterolateral margin, close to the <b>sp1</b> extremity. <b>CuA</b> secondary branches beginning above the speculum, and zigzag-shaped at their base, perpendicularly deflecting toward the apical margin, then running, slightly convergent, alongside the anal margin. Intraspecular cells numerous immediately under the speculum and also after it. Chords notably curved. The <b>d</b> vein partially fused to <b>CuP</b>, converging towards <b>CuA</b>. The <b>d-am</b> crossvein situated at the boundary of both anterior and anterolateral margins of the speculum. Apical part of <b>d</b> connected to the apical part of the posterolateral margin of the speculum by a long cross-vein. The area below the posterior margin of the speculum of similar width to the adjacent areas (area below the anterolateral margin of the speculum and area between the posterolateral margin of the speculum and the most proximal <b>CuA</b> secondary branch) and filled by parallel cross-veins.</p> <p> <b>Remarks.</b> This specimen was originally described by Martins-Neto (2002b) under the collection number RGMN-3000, now removed to a definitive collection number RGMN-T029 at the same Institution (SBPr).</p>Published as part of <i>Martins-Neto, Rafael Gioia & Tassi, Lara Vaz, 2009, The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa, pp. 21-37 in Zootaxa 2080</i> on page 25, DOI: <a href="http://zenodo.org/record/187344">10.5281/zenodo.187344</a>
Branching fraction and CP asymmetry of the decays B+→K0Sπ+ and B+→K0SK+
No full textAn analysis of B+ → K0
Sπ+ and B+ → K0
S K+ decays is performed with the LHCb experiment. The pp
collision data used correspond to integrated luminosities of 1 fb−1 and 2 fb−1 collected at centre-ofmass
energies of
√
s = 7 TeV and
√
s = 8 TeV, respectively. The ratio of branching fractions and the
direct CP asymmetries are measured to be B(B+ → K0
S K+
)/B(B+ → K0
Sπ+
) = 0.064 ± 0.009 (stat.) ±
0.004 (syst.), ACP(B+ → K0
Sπ+
) = −0.022 ± 0.025 (stat.) ± 0.010 (syst.) and ACP(B+ → K0
S K+
) =
−0.21 ± 0.14 (stat.) ± 0.01 (syst.). The data sample taken at
√
s = 7 TeV is used to search for
B+
c
→ K0
S K+ decays and results in the upper limit ( fc · B(B+
c
→ K0
S K+
))/( fu · B(B+ → K0
Sπ+
)) <
5.8 × 10−2 at 90% confidence level, where fc and fu denote the hadronisation fractions of a ¯b
quark
into a B+
c or a B+ meson, respectively
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
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
Eburodacrys lenkoi Napp & Martins 1980
No full text32. Eburodacrys lenkoi Napp & Martins, 1980 Distribution: Brazil (Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná). Material examined: BRASIL, Paraná, Céu Azul, 700 m a.s.l., 25º04’09”S, 53º39’35”W. Canopy, Light trap (Luiz de Queiroz), 20.xii.2014, R. C. Barros, J.P.B Pine & B. Piracini-Silva & M.G. Fonseca leg. (MZUEL).Published as part of Barros, Rafael C., Fonseca, Mailson G., Jardim, Marcelo T., Damiani, Vinicius E. Vendramini Bruno C. B. & Julio, Carlos E. A., 2020, Species of Cerambycinae (Insecta, Coleoptera, Cerambycidae) from east Paraná State (Brazil), with new geographic records, pp. 1-25 in Zootaxa 4845 (1) on page 7, DOI: 10.11646/zootaxa.4845.1.1, http://zenodo.org/record/440604
Eburodacrys lenkoi Napp & Martins 1980
No full text32. Eburodacrys lenkoi Napp & Martins, 1980 Distribution: Brazil (Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná). Material examined: BRASIL, Paraná, Céu Azul, 700 m a.s.l., 25º04’09”S, 53º39’35”W. Canopy, Light trap (Luiz de Queiroz), 20.xii.2014, R. C. Barros, J.P.B Pine & B. Piracini-Silva & M.G. Fonseca leg. (MZUEL).Published as part of Barros, Rafael C., Fonseca, Mailson G., Jardim, Marcelo T., Damiani, Vinicius E. Vendramini Bruno C. B. & Julio, Carlos E. A., 2020, Species of Cerambycinae (Insecta, Coleoptera, Cerambycidae) from east Paraná State (Brazil), with new geographic records, pp. 1-25 in Zootaxa 4845 (1) on page 7, DOI: 10.11646/zootaxa.4845.1.1, http://zenodo.org/record/440604
Coleoxestia nigripes Martins & Monne 2005
No full text13. Coleoxestia nigripes Martins & Monné, 2005 (Fig. 03) Distribution: Bolivia (Santa Cruz), Argentina (Jujuy, Salta). Material examined: BRASIL, Paraná, Céu Azul, 700 m a.s.l., 25º04’09”S, 53º39’35”W. Understory, Light trap (Luiz de Queiroz), 2 males, 2 females, 19.i.2015, R. C. Barros & J.P.B Pine & B. Piracini-Silva & M.G. Fonseca leg. (MZUEL). New country record.Published as part of Barros, Rafael C., Fonseca, Mailson G., Jardim, Marcelo T., Damiani, Vinicius E. Vendramini Bruno C. B. & Julio, Carlos E. A., 2020, Species of Cerambycinae (Insecta, Coleoptera, Cerambycidae) from east Paraná State (Brazil), with new geographic records, pp. 1-25 in Zootaxa 4845 (1) on page 4, DOI: 10.11646/zootaxa.4845.1.1, http://zenodo.org/record/440604
Data for 'Synthesis and conformational properties of 3,4-difluoro-L-prolines'
No full textData supporting the paper:
Hofman, G-J., Ottoy, E., Light, M., Kieffer, B., Martins, J. C., Kuprov, I., ... Linclau, B. (2019). Synthesis and conformational properties of 3,4-difluoro-L-prolines. Journal of Organic Chemistry. DOI: 10.1021/acs.joc.8b02920
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FIGURE 2 in A new species of Ischnocnema from highlands of the Atlantic Forest, Southeastern Brazil (Terrarana, Brachycephalidae)
No full textFIGURE 2. Holotype of Ischnocnema vizottoi sp. nov. (CFBH-8222). (A) Dorsal and (B) lateral views of head; ventral views of hand (C) and foot (D).Published as part of Martins, Itamar A. & Haddad, Célio F. B., 2010, A new species of Ischnocnema from highlands of the Atlantic Forest, Southeastern Brazil (Terrarana, Brachycephalidae), pp. 55-65 in Zootaxa 2617 on page 59, DOI: 10.5281/zenodo.19795
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