peripheral branching pattern of identified dorsal unpaired median (DUM) neurones of the locust. Cell Tissue Res. 290 , 641-654.
The peripheral branching pattern of identified dorsal unpaired median (DUM) neurones of the locust
Summary In a recent article Sombatsompop et al. (2004) proposed a new way of calculating a synchronous journal impact factor. Their proposal seems quite interesting and will be discussed in this note. Their index will be referred as the Median Impact Factor (MIF). I explain every step in detail so that readers with little mathematical background can understand and apply the procedure. Illustrations of the procedure are presented. Some attention is given to the estimation of the median cited age in case it is larger than ten year. I think the idea introduced by Sombatsompop, Markpin and Premkamolnetr has a great theoretical value as they are - to the best of my knowledge - the first ones to consider impact factors not using years as a basic ingredient, but an element of the actual form of the citation curve. The MIF is further generalized to the notion of a percentile impact factor.
measure for skewed distributions (the mode is suggested instead) and because of the previously mentioned inaccuracies, the use of three digits after the decimal for the impact factor is meaningless.
Except for the mode and the median (which is
Flour particle size distribution is a major factor affecting the milling behaviour in common wheats (Triticum aestivum L.). This study evaluated a new method to evaluate the milling behaviour of Japanese wheat varieties, and determine the relationship between flour yield and median flour particle size. To investigate the higher flour yielding varieties in Japanese wheats, the flour yield of one hundred sixty-five Japanese common wheat varieties were investigated in relation to median and mean flour particle size, and also, the flour particle size distribution patterns as determined by laser diffraction. The results showed that hard and soft wheat varieties differed in median flour particle size and particle distribution patterns. Eighty percent of the Japanese wheat varieties had soft or medium-soft particle size distribution patterns. Also, flour yield was most strongly associated with the median flour particle size in the flour samples. These results indicate the potential to develop a flour yield evaluation method in Japanese udon-noodle wheat varieties using laser diffraction methods, and that median flour particle size analysis could be a useful indicator in flour quality for udon-noodle wheat breeding and evaluation.
The characteristic scores and scales (CSS), introduced by Glänzel and Schubert (J Inform Sci 14:123–127, <cite>1988</cite>) and further studied in subsequent papers of Glänzel, can be calculated exactly in a Lotkaian framework. We prove that these
CSS are simple exponents of the average number of items per source in general IPPs. The proofs are given using size-frequency
functions as well as using rank-frequency functions. We note that CSS do not necessarily have to be defined as averages but
that medians can be used as well. Also for these CSS we present exact formulae in the Lotkaian framework and both types of
CSS are compared. We also link these formulae with the h-index.
In Bayesian statistics, one frequently encounters priors and posteriors that are product of two probability density functions. In this paper, we discuss three such priors/posteriors, provide motivation and derive expressions for their moments, median and mode. Forty seven motivating examples are discussed. We expect that this paper could serve as a useful reference for practitioners of Bayesian statistics. It could also encourage further research in this area.