155,245 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
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
A complete characterization of pre-Mueller and Mueller matrices in polarization optics
No full textThe Mueller-Stokes formalism that governs conventional polarization optics is formulated for plane waves, and thus the only qualification one could require of a 4 x 4 real matrix M in order that it qualify to be the Mueller matrix of some physical system would be that M map Omega((pol)), the positive solid light cone of Stokes vectors, into itself. In view of growing current interest in the characterization of partially coherent partially polarized electromagnetic beams, there is a need to extend this formalism to such beams wherein the polarization and spatial dependence are generically inseparably intertwined. This inseparability brings in additional constraints that a pre-Mueller matrix M mapping Omega((pol)) into itself needs to meet in order to be an acceptable physical Mueller matrix. These additional constraints are motivated and fully characterized. (C) 2010 Optical Society of Americ
Robert C. Mueller, Jan. 1957
No full textRobert C. Mueller, Jan. 1957, b&w. Back reads: Adv. Wednesday, Robert C. Mueller HUPCO stamp of McHale & Hill photography, Cincinnati, Ohio.https://mds.marshall.edu/doris_miller_papers/1066/thumbnail.jp
1946-48 -- Correspondence, Miscellaneous -- letter, 1948-06-07
No full textLetter from Mueller, J. Howard to Sabin, Albert B. dated 1948-06-07.Sabin Collection Fair Use Policy</a
1956 -- Correspondence, Miscellaneous -- letter, 1956-01-18
No full textLetter from Mueller, Justus F. to Sabin, Albert B. dated 1956-01-18.Sabin Collection Fair Use Policy</a
Earth observation: data, processing and applications
No full textHarrison, B.A., Jupp, D.L.B., Lewis, M.M., Forster, B., Mueller, N., Smith, C., Phinn, S., Hudson, D., Grant, I., Coppa, I
That daffydil rag.
No full textGift of Dr. Mary Jane Esplen.Piano vocal [instrumentation]B flat major [key]Moderato [tempo]Popular song ; ragtime music [form/genre]Photographs: Frank Mueller, Bill Mueller [illustration]Publisher's advertisement on back cover [note
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