1,722,150 research outputs found
The fungal genus Calycellinopsis belongs in Helotiaceae not Dermateaceae
No full textZhuang, Wen-Ying, Luo, Jing, Zhao, Peng (2010): The fungal genus Calycellinopsis belongs in Helotiaceae not Dermateaceae. Phytotaxa 3: 54-58, DOI: 10.11646/phytotaxa.3.1.
Paratus longlingensis Zhao & Peng, 2013, sp. nov.
No full text2. Paratus longlingensis sp. nov. (Figures 2, 5) Description Male carapace pale brown, with distinct, black, marginal and submarginal bands, both bands connected by one or two radial stripes. Anterior eye row recurved, posterior eye row procurved and slightly wider. Fovea dark, longitudinal and bar shaped. Sternum pale brown and without pattern. Chelicerae 1.10 long, coloured as carapace, median area with dark spot, three promarginal and four retromarginal teeth. Labium slightly wider than long. Legs coloured as carapace, with distinct black annuli; tibiae I and II with eight and six pairs of long ventral spines, respectively, with longest spine 0.92. Metatarsi I and II with three pairs of long ventral spines, with longest spine 0.97. Opisthosoma ovoid. Dorsum paler than carapace, anterior lateral area with a pair of diagonal, dark bands, median and posterior area scattered with many white spots; and with two pairs of muscular impressions (Figure 2 (a)). Venter whitish yellow, paler than dorsal, marginal area with irregular, black spots. Spinnerets pale brown, anterior one cylindrical and longest, median one conical and shortest, and posterior cylindrical with tapered distal end. Palpal organ with coxae 0.2 7 long, 0.21 wide. Femur 0.95 long, longer than wide, with a promarginal dark spot, and two dorsal and one retrolateral, strong spines, and one weaker, prolateral spine. Patella 0.40 long, about 0.23 X shorter than femur, with one prolateral and dorsal spine each. Tibia 0.32 long with one dorso-retrolateral apophysis (Figures 2 (c),(d), 5 (b)), and two prolateral spines (Figures 2 (b),(c), 5 (a),(b)). Cymbium 1.01 long and without spines. Genital bulb globular (Figures 2 (b), 5 (a)). Embolus originating from anterior portion of the bulb, its narrower portion about 0.5 X as long as the wider portion. Conductor short, its distal portion much wider and with two rami (Figures 2 (b), 5 (a)). Measurements. Male total length 3.70 (variation 3.12 – 3.75), carapace 1.9 5 long, 1.80 wide, 1.0 0 high. Clypeus very low, 0.05. AME 0.15, ALE 0.10, PME 0.16, PLE 0.15, AME – AME 0.08, AME – ALE 0.07, AME – PME 0.09, PME – PME 0.10, PME – PLE 0.16, ALE and PLE touching each other. Leg I 8.45 (2.40, 3.40, 1.95, 0.70), II 6.84 (2.06, 2.61, 1.52, 0.65), III 6.55 (1.93, 2.28, 1.61, 0.73), IV 6.64 (1.80, 2.05, 1.97, 0.82), formula: I, II, IV, III. Holotype m, China: Yunnan Province, Longling County, Longjiang Township, Xiaoheishan Forest Reserve, Guchengshan, 24.82888 ° N, 98.76001 ° E, 2020m, 27.v.2005, Coll. David Kavanaugh and Charles Griswold (2005-032C – 1, HNU); paratypes: m, data same as holotype (2005-032C– 2, CAS); m, China: Yunnan Province, Longling County, Longjiang Township, Xiaoheishan Nature Reserve, 1.2 km SSE of Route S3 17 at 23.5 km, 24.82888 ° N, 98.76001 ° E, 2020m, 26.v.2005, Coll. Charles Griswold and David Kavanaugh, good primary broadleaf forest, night collecting (CGY127 – 1, HNU). Etymology The specific name is derived from the type locality. Comments This new species resembles P. indicus (Marusik et al. 2008: Figures 8 – 11), but distinct in its (1) embolus originating from the anterior portion of genital bulb (Figures 2 (b),(c), 5 (a), (b)) (vs. originating from the median portion); (2) narrower portion of embolus about 0.5 X as long as its wider portion (Figures 2 (b), 5 (a)) (vs. about as long as its wider portion); (3) conductor much shorter, its distal portion much wider and with two rami (Figures 2 (b), 5 (a)) (vs. distal portion bar shaped); (4) tibia with two strong spines (Figures 2 (b),(c), 5 (a),(b)) (vs. with only one spine).Published as part of Zhao & Peng, 2013, Three new species of spiders of the family Liocranidae (Arachnida: Araneae) from China, pp. 176-183 in Oriental Insects 47 (2) on pages 178-180, DOI: 10.1080/00305316.2013.811021, http://zenodo.org/record/58394
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
FIGURE 3 in A new species of the genus Utivarachna Kishida, 1940 (Araneae: Trachelidae) from China, with the first description of the male of U. fabaria Zhao & Peng, 2014 and a redescription of U. gui (Zhu, Song & Kim, 1998)
No full textFIGURE 3. Utivarachna lata sp. nov., A. epigyne, ventral view; B. vulva, dorsal view; C. schematic of internal duct system; D. male left palp, prolateral view; E. same, ventral view; F. same, retrolateral view. Scale bars: 0.5 mm (A–B, D–F); 0.25 mm (C).Published as part of Jin, Chi, Yin, Xiangchu & Zhang, Feng, 2015, A new species of the genus Utivarachna Kishida, 1940 (Araneae: Trachelidae) from China, with the first description of the male of U. fabaria Zhao & Peng, 2014 and a redescription of U. gui (Zhu, Song & Kim, 1998), pp. 569-581 in Zootaxa 4057 (4) on page 573, DOI: 10.11646/zootaxa.4057.4.6, http://zenodo.org/record/25363
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Structure elucidation and absolute configuration determination of C , C and C tirucallane triterpenoids from the leaves of Picrasma quassioides (D. Don) Benn
No full textYang, Pei-Yuan, Zhao, Peng, Bai, Ming, Yu, Xiao-Qi, Ren, Hui, Liu, Qing-Bo, Lin, Bin, Song, Shao-Jiang, Huang, Xiao-Xiao (2021): Structure elucidation and absolute configuration determination of C , C and C tirucallane triterpenoids from the leaves of Picrasma quassioides (D. Don) Benn. Phytochemistry (112675) 184: 1-9, DOI: 10.1016/j.phytochem.2021.112675, URL: http://dx.doi.org/10.1016/j.phytochem.2021.11267
Next-value prediction of beam waists from mixed pitch grating using simplified transformer model
Full text linkIn this study, a simplified transformer model is used to predict the beam waist of 1,092 nm light coupled out from SiN-based mixed pitch gratings at various heights. The beam waists data at various heights above the grating is first compiled. Then, we used a sequence of the current beam waist values, z-positions, and the computed mathematical indicators (features) to predict the next beam waist value (labels). Optimized transformer model yields average percentage error (APE) of 6.6% between the predicted and actual beam waists, which corresponds to 93.4% prediction accuracy. This study provides a pioneering approach to using natural language processing model to perform predictive modelling on photonics data, and possible extrapolation of photonics data using transformer model.Ministry of Education (MOE)Published versionThis work was supported in part by the Ministry of Education of Singapore AcRF Tier 2 under Grant T2EP50121-0002 (MOE-000180-01) and in part by AcRF Tier 1 under Grant RG135/23, RT3/23
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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