13,325 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Dispelling the Myths Behind First-author Citation Counts

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    We 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

    Nuconarius pseudocapitulatus Li & Zhao & Zhang & Li 2018, comb. n.

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    Nuconarius pseudocapitulatus (Wang, 2003) comb. n. FIGS 5–7 Draconarius pseudocapitulatus WaNG 2003: 545, fIGS 53A–B; WaNG et al. 2010: 89, fIGS 407–427; Zhu et al. 2017: 352, fIGS 219A–D. Types. Holotype: ♀ (HNNU), DANZHU He DRAINAGe, (27.631000°N, 98.621000°E, eLeV. 2700 M), 13.5 AIR KM SSW OF GONGSHAN, GONGSHAN CO., NUjIANG, Yunnan, China, 30 JUNe–5 JULY 2000, D. KAVANAUGH, C.E. GRISWOLD, H.B. LIANG, D. UBICK, H.M. YAN, D.Z. DONG LeG. Paratypes: 1♀ (HNNU), same data as holotype; 1♀ (CAS), Nujiang STATe NATURe ReSeRVe, NO. 12 BRIDGe CAMP AReA (27.715000°N, 98.502000°E, eLeV. 2775M) 16.3 AIR KM W OF GONGSHAN, NUjIANG PReFeCTURe, GAOLIGONG SHAN, Yunnan, China, 15–19 JULY 2000, H.M. YAN, D. KAVANAUGH, C.E. GRISWOLD, H.B. LIANG, D. UBICK, D.Z. DONG LeG. Other records: 37♀♀ 9♂♂ (HNNU AND CAS), GAOLIGONG SHAN, Yunnan, China. Material examined. 1♀ 1♂ (IZCAS-AR 33971), DABADI (27.786267°N, 98.510283°E, eLeV. 3200 M), 41 KM OF DeRUNG-NU AUTONOMOUS COUNTY GONGSHAN, NUjIANG OF THe LISU AUTONOMOUS PReFeCTURe, Yunnan, China, 11 DeCeMBeR 2013, Y. LI & J. LIU LeG. Diagnosis. MALeS OF THIS SPeCIeS CAN Be DISTINGUISHeD FROM N. brevipatellatus Z. ZhaO & S. LI sp. n. BY THe LONG PATeLLAR APOPHYSIS, SUBeqUAL TO THe LeNGTH OF PATeLLA, WHILe IT IS OBVIOUS SHORT IN N. brevipatellatus Z. ZhaO & S. LI sp. n.; and cymbial furrow short, less than ½ of the length of cymbium, while it is about ⅓ in N. brevipatellatus Z. ZhaO & S. LI sp. n. (FIGS 1C, 5C), AND MeDIAN APOPHYSIS ABSeNT (FIGS 1B–C, 5B–C). FeMALeS OF THe SPeCIeS CAN Be DISTINGUISHeD FROM N. brevipatellatus Z. ZhaO & S. LI sp. n. BY THe SPeRMATHeCAL HeADS WHOSe WIDTH eqUAL TO THe LeNGTH WHILe IN N. brevipatellatus Z. ZhaO & S. LI sp. n., THe WIDTH OF SPeRMATHeCAL HeADS IS LONGeR THAN THe LeNGTH (FIGS 2B, 6B); THe POSTeRIOR ePIGYNAL SCLeRITe SeMICIRCULAR AND UNCOVeReD WHILe IN N. brevipatellatus Z. ZhaO & S. LI sp. n., THe POSTeRIOR ePIGYNAL SCLeRITe COVeReD BY THe exTeNDeD POSTeRIOR eDGe OF ATRIUM (FIGS 2A, 6A). Description. Male: See WANG et al. (2010). PHOTOS OF BOTH HABITUS AND PALP ARe PROVIDeD HeRe (FIGS 5–6). Female: See WANG (2003). PHOTOS OF BOTH HABITUS AND ePIGYNe ARe PROVIDeD HeRe (FIG. 6). Variation: TOTAL LeNGTH VARIeS FROM 8.70 TO 10.80. Distribution. YUNNAN, CHINA (FIG. 7).Published as part of Li, Bing, Zhao, Zhe, Zhang, Chuntian & Li, Shuqiang, 2018, Nuconarius gen. n. and Hengconarius gen. n., two new genera of Coelotinae (Araneae, Agelenidae) spiders from Southwest China, pp. 237-263 in Zootaxa 4457 (2) on pages 244-246, DOI: 10.11646/zootaxa.4457.2.2, http://zenodo.org/record/134255

    Raw data of Zhao et al., 2022, Geoderma

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    Raw data associated with Zhao et al., 2022, Geoderma. Any use of the data set should be approved by the corresponding author Kai Yue at "[email protected]".</p

    Chao Yuen Ren (1892–1982)

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    Y. R. Chao is easily the most famous linguist to have come out of China. Born before the end of the last dynasty in China, he received a traditional Confucian education, but was also one of the first Chinese people to be sent to the West for training in modern Western science (under the Boxer Indemnity Fund). The remarkable breadth and scope of his studies included physics, mathematics, linguistics, musical and literary composition, and translation, and he was a pioneer in many of these fields

    Hengconarius pseudobrunneus Li & Zhao & Zhang & Li 2018, comb. n.

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    Hengconarius pseudobrunneus (Wang, 2003) comb. n. FIGS 19–20 Draconarius pseudobrunneus WaNG 2003: 544, fIGS 52A–B; WaNG et al. 2010: 85, fIGS 361–406, 548; Zhu et al. 2017: 350, fIGS 218A–D. Types. Holotype: &female; (HNNU), DANZHU He DRAINAGe, (27.631000°N, 98.621000°E, eLeV. 2700 M), 13.5 AIR KM SSW OF GONGSHAN, GONGSHAN CO., NUjIANG, Yunnan, China, 30 JUNe 2000 – 5 JULY 2000, D. KAVANAUGH, C.E. GRISWOLD, H.B. LIANG, D. UBICK, H M. YAN, D.Z. DONG LeG. Paratypes: 3&female;&female; (HNNU AND CAS), SAMe DATA AS HOLOTYPe. Other records: 21&female;&female; 36&male;&male; (HNNU AND CAS), GAOLIGONG SHAN, Yunnan, China. Material examined. 1&female; (IZCAS-AR 33983), 6 KM E OF PIANMA TOWNSHIP (26.002433°N, 98.659067°E, eLeV. 2422 M), LUSHUI COUNTY, NUjIANG OF THe LISU AUTONOMOUS PReFeCTURe, Yunnan, China, 7 DeCeMBeR 2013, Y. LI & J. Liu leg.; 1&female; (IZCAS-Ar33984), Luoshuidong (24.96838°N, 98.81840°E, elev. 1881 m), Jiangdong Village, GUDONG TOWNSHIP, TeNGCHONG COUNTY, BAOSHAN CITY, Yunnan, China, 26 NOVeMBeR 2013, Y. LI & J. LIU LeG. Diagnosis. H. pseudobrunneus IS SIMILAR TO H. incertus AND H. latusincertus IN ePIGYNe SHAPe BUT CAN Be DISTINGUISHeD FROM H. incertus BY THe MeDIALLY SITUATeD SPeRMATHeCAL HeADS, AND FROM H. latusincertus BY THe NARROW ATRIUM, CLeAR COPULATORY DUCT AND NARROW SPeRMATHeCAe (FIGS 19A–B). Description. See WANG (2003). PHOTOS OF BOTH HABITUS AND ePIGYNe ARe PROVIDeD IN THIS STUDY (FIG. 19). Variation: TOTAL LeNGTH VARIeS FROM 6.28 TO 11.23. Distribution. YUNNAN, CHINA (FIG. 20).Published as part of Li, Bing, Zhao, Zhe, Zhang, Chuntian & Li, Shuqiang, 2018, Nuconarius gen. n. and Hengconarius gen. n., two new genera of Coelotinae (Araneae, Agelenidae) spiders from Southwest China, pp. 237-263 in Zootaxa 4457 (2) on pages 258-259, DOI: 10.11646/zootaxa.4457.2.2, http://zenodo.org/record/134255

    Hydrogen embrittlement in super duplex stainless steels

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    In super duplex stainless steels (SDSSs), both austenite and ferrite are susceptible to hydrogen embrittlement, however there is a lack of understanding into the effect of hydrogen in each phase. In this study, in neutron diffraction was applied on hydrogen-charged (H-charged) samples to investigate the hydrogen embrittlement behaviour in super duplex stainless steels. The result reveals that austenite maintains good plasticity during tensile testing, whilst a loss of it is realised in ferrite. Fractography analysis reveals the diffusion of hydrogen induced a brittle-to-ductile transition from the sample surface towards the centre; hydrogen embrittlement vanishes as the specimen’s centre is approached, while it is demonstrated to disappear first in austenite but not in ferrite. This transition can be predicted by applying a physics-based hydrogen embrittlement model which incorporates the effects of hydrogen concentration, hydrogen diffusivity, residual stress, loading state and temperature. The present work demonstrates the dissimilar susceptibility of austenite and ferrite to hydrogen embrittlement, providing a tool to describe it

    Gated relational stacked denoising autoencoder with localized author embedding for global citation recommendation

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    Citation recommendation is an effective and efficient way to facilitate authors finding desired references. This paper presents a novel neural network based model, called gated relational probabilistic stacked denoising autoencoder with localized author (GRSLA) embedding, for global citation recommendation task. Our model is comprised of two modules with different neural network architecture. For each citing and cited papers, we use a gated paper embedding module, which is extended from probabilistic stacked denoising autoencoder (PSDAE) by adding gated units, to obtain their paper vectors. The added gated units are able to utilize text information of cited paper to refine the vector representation of citing paper in multiple semantic levels. For an author in papers, we first apply topic model to obtain his/her semantic neighbors, and then use a localized author embedding (LAE) module to excavate author vector representation from semantic and explicit neighbors. Unlike most graph convolutional network (GCN) based methods, the LAE module is able to avoid computing global Laplacian in whole graph by taking limited neighbors. Moreover, the LAE module can also be stacked to absorb more neighbors, which makes our model have high extendibility. Based on the generation process of GRSLA, we also derive a learning algorithm of our model by maximum a posteriori (MAP) estimation. We conduct experiments on the AAN, DBLP and CORD-19 datasets, and the results show that GRSLA model works well than previous global citation recommendation methods

    Modeling nitrogen nutrient loss and ammonia emissions from animal farms

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    Author institution (Zhao): Department of Food, Agricultural, and Biological Engineering, The Ohio State Universit
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