One of the most useful and correct methodological approaches in bibliometrics is ranking. In context highly skewed bibliometric distributions severe distortions caused by outliers, it often preferable way analysis. Ranking methodology strictly implies that "oranges should be compared with oranges, apples apples". We make a "like like" comparison. Ranks different fields show how unit under study...

BACKGROUND The diagnosis of hypertension in children is complex because based on normative values by sex, age and height, and these values vary depending on the environment. Available BP references used, because of the absence of local data, do not correspond to our pediatric population. Accordingly, our study aimed to provide the BP threshold for children and adolescents in Lubumbashi (DRC) an...

PP(top x%) is the proportion of papers of a unit (e.g. an institution or a group of researchers), which belongs to the x% most frequently cited papers in the corresponding fields and publication years. It has been proposed that x% of papers can be expected which belongs to the x% most frequently cited papers. In this Letter to the Editor we will present the results of an empirical test whether ...

We present a new algorithm called PBSIM for computing image similarity, based upon a novel method of extracting bloblike features from images. In tests on a classification task using a data set of over 1000 images, PBSIM shows significantly higher accuracy than algorithms based upon color histograms, as well as previously reported results for another approach based upon bloblike features.

Dredging poses a potential risk to tropical ecosystems, especially in turbidity-sensitive environments such as coral reefs, filter feeding communities and seagrasses. There is little detailed observational time-series data on the spatial effects of dredging on turbidity and light and defining likely footprints is a fundamental task for impact prediction, the EIA process, and for designing monit...

OBJECTIVE To investigate the notion of indicated prevention-helping overweight or obese youth attain non-overweight status to prevent adult obesity-by examining weight-for-height changes needed to normalize weight status in youth who are growing. DESIGN We determined the amount of weight-for-height change necessary for overweight or obese youth to achieve non-overweight status using linear mi...

BACKGROUND Global glomerulosclerosis is characteristic of chronic kidney disease and also occurs with normal aging. Our goal was to determine the upper limit of normal for number of globally sclerotic glomeruli. METHODS Core-needle biopsies of the renal cortex were obtained at the time of living kidney transplantation at three centers between 1998 and 2011. The number of globally sclerotic gl...

The expected frequency of runs of extreme days is modelled with a seasonal autoregressive representation using two site-specific scalar parameters—autocorrelation and an index of seasonality. Extreme days for a meteorological variable such as temperature, evaporation, sunshine and wind run are defined as days when the variable in question exceeds an arbitrary upper threshold or fails to exceed ...