495,437 research outputs found
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
Li, C.P. -- 1976-82 -- Correspondence, Individual -- letter, 1976-09-07
No full textLetter from Li, C. P. to Sabin, Albert B. dated 1976-09-07.Sabin Collection Fair Use Policy</a
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
Li, C.P. -- 1976-82 -- Correspondence, Individual -- letter, 1976-08-30
No full textLetter from Sabin, Albert B. to Li, C. P. dated 1976-08-30.Sabin Collection Fair Use Policy</a
Li, C.P. -- 1976-82 -- Correspondence, Individual -- letter, 1977-04-21
No full textLetter from Sabin, Albert B. to Li, C. P. dated 1977-04-21.Sabin Collection Fair Use Policy</a
Study of Li+B elastic scattering and the lithium-induced reaction of one-nucleon transfers from B(Li,Li)B
Full text linkThe angular distributions of elastic scattering of Li, as well as the lithium-induced reaction of one-nucleon transfers B(Li,Li)B were measured at = 58 MeV. Experiment was done using U-400 accelerator beam of the FLNR JINR, Dubna. Angular distribution for reaction B(Li,Li)B with excitation of the 3.56 MeV state (Li*) is presented for the first time. The DWBA analysis of the differential cross section of the B(Li,Li)B ground state (g.s.) transition and excited ( = 0, = 1, = 3.56 MeV) state of Li transition was performed. The optical model potentials were obtained by fitting of measured elastic scattering data and evaluating parameters for the output reaction channels. Phenomenological approach based on solving an approximate equation for the reaction form factor was used to determine its radial dependence and empirical values of asymptotic normalization coefficient (ANC). Obtained values of ANCs for the Li and Li*(3.56 MeV) states are in agreement with the literature ones. Comparison of the radial dependences of form factors shows that the wave function of the Li nucleus in excited ( = 0, = 1, = 3.56 MeV) state has increased spatial dimension compared to the ground state. This result is an argument in favor of a halo existence in Li*(3.56 MeV) state, while the question of a halo in Li still leaves open.The article has undergone several updates: the title has been changed, Sergey Dmitriev has been added as an author, and acknowledgments to the research team have been added. Expansions and clarifications have been added to all chapters of the article. Typos have been corrected. The original results remain unchange
Wang Li (1900-1986)
No full textWang Li (Wang Liaoyi) was one of the three most prominent linguists in China in the 20th century. He was born August 10, 1900, in what is now Bobai County of the Guangxi Zhuang Autonomous Area
Li-iPSC differentiation into functional Li-HLCs.
No full text(A) Schematic illustration of the HLC differentiation procedure together with representative brightfield images taken at day 0, 5, 10 (scale bars = 250 μm) and 16 (scale bar 50 μm) during Li-HLC differentiation. (B) Li-HLCs at the end of differentiation protocol (day 16) co-stained positive for the hepatocyte specific markers HNF4A and Albumin, and for the pan epithelial marker E-Cadherin (C) by immunofluorescence analysis compared to isotype IgG control (scale bar 50 μm). (D) Fully differentiated Li-HLCs are functional with respect to the accumulation of lipids and glycogen as determined by Oil red O and Periodic Acid Schiff (PAS) staining (scale Bars 50 μm). Image quantification is described in S1 File.</p
Tetraacetonitrilelithium tetraisothiocyanatoborate
No full textThe crystal structure of the title salt, [Li(CH3CN)4][B(NCS)4], is composed of discrete cations and anions. Both the Li and B atoms show a tetrahedral coordination by four equal ligands. The acetonitrile and isothiocyanate ligands are linear. The bond angles at the B atom are close to the ideal tetrahedral value [108.92 (18)–109.94 (16)°], but the bond angles at the Li atom show larger deviations [106.15 (17)–113.70 (17)°]
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