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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
A morphological study of the development of the second inflorescences in strawberry (Fragaraia x ananassa Duch.).
No full textTo clarify the timing of the differentiation of the fi rst and second infl orescences in strawberry (Fragaria × ananassa Duch.), morphological changes on shoot apices during short day and low night temperature treatments were observed by scanning electron microscopy (SEM) and optical microscopy.
Axillary buds just below the fi rst infl orescence (axillary bud 1) became visible when sepal primordia of the primary fl ower were differentiated. By this time, other axillary buds had already developed. Axillary bud 1 developed four leaf primordia, and then a differentiated infl orescence at its summit. The phase transition of shoot apices from the vegetative to the reproductive phase may therefore trigger
the differentiation of axillary bud 1 which is destined to develop into extension crowns
Effect of apical pinching on the growth of branch crowns and stolons in strawberry plants.
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