306,387 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
Autocorrelation (ACF) for PM<sub>10</sub> concentration series for Kallio station.
No full text<p>Autocorrelation (ACF) for PM<sub>10</sub> concentration series for Kallio station.</p
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Biome-specific rodent dynamics and hantavirus epidemiologies in Europe
No full textHenttonen, H., Leirs, H., Kallio, E.R., Tersago, K., Voutilainen, L
Fitness evolution for Kallio and Vallila stations with correction via HS.
No full text<p>Fitness evolution for Kallio and Vallila stations with correction via HS.</p
Fitness evolution for Kallio and Vallila stations with correction via ANN.
No full text<p>Fitness evolution for Kallio and Vallila stations with correction via ANN.</p
Locations of the Kallio and Vallila air quality stations in Helsinki. The Vallila station is located in urban traffic (UT) environment and the Kallio station is located in urban background (UB) environment(adapted from [47]).
No full text<p>Locations of the Kallio and Vallila air quality stations in Helsinki. The Vallila station is located in urban traffic (UT) environment and the Kallio station is located in urban background (UB) environment(adapted from [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0138507#pone.0138507.ref047" target="_blank">47</a>]).</p
New fully kinetic model for the study of electric potential, plasma, and dust above lunar landscapes
No full textWe have developed a new fully kinetic electrostatic simulation, HYBes, to study how the lunar landscape affects the electric potential and plasma distributions near the surface and the properties of lifted dust. The model embodies new techniques that can be used in various types of physical environments and situations. We demonstrate the applicability of the new model in a situation involving three charged particle species, which are solar wind electrons and protons, and lunar photoelectrons. Properties of dust are studied with test particle simulations by using the electric fields derived from the HYBes model. Simulations show the high importance of the plasma and the electric potential near the surface. For comparison, the electric potential gradients near the landscapes with feature sizes of the order of the Debye length are much larger than those near a flat surface at different solar zenith angles. Furthermore, dust test particle simulations indicate that the landscape relief influences the dust location over the surface. The study suggests that the local landscape has to be taken into account when the distributions of plasma and dust above lunar surface are studied. The HYBes model can be applied not only at the Moon but also on a wide range of airless planetary objects such as Mercury, other planetary moons, asteroids, and nonactive comets
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