purpose the aim of this study was to investigate the relation between anthropometric variables and total race time including split times in 184 recreational male ironman triathletes. methods body mass, body height, body mass index, lengths and circumferences of imbs, thicknesses of skin-folds, sum of skin-fold thicknesses, and percent body fat were related to total race time including split tim...

The literature on the summation of sequences and the finding of the sums of the corresponding series is voluminous and well known. For rapidly convergent sequences term-by-term evaluations furnish no great obstacle. Likewise, if the sequence can be matched with a sequence whose sum is known and the term-byterm difference of the two sequences converges rapidly, this difference-sequence can be ev...

the padmakar-ivan (pi) index is a wiener-szeged-like topological index which reflectscertain structural features of organic molecules. the pi index of a graph g is the sum of alledges uv of g of the number of edges which are not equidistant from the vertices u and v. inthis paper we obtain the second and third extremals of catacondensed hexagonal systems withrespect to the pi index.

Socioeconomic status (SES) is often considered a risk factor for health outcomes. SES is typically measured using individual variables of educational attainment, income, housing, and employment variables or a composite of these variables. Approaches to building the composite variable include using equal weights for each variable or estimating the weights with principal components analysis or fa...

This article considers ultrahigh-dimensional forecasting problems with survival response variables. We propose a two-step model averaging procedure for improving the accuracy of true conditional mean variable. The first step is to construct class candidate models, each low-dimensional covariates. For this, feature screening developed separate active and inactive predictors through marginal Buck...