BACKGROUND Obesity and overweight threaten not only seafarer's health but also the safety of operations on board a ship. The aim of the study was to investigate the statistical distribution of obesity and overweight among Turkish seafarers by using the health examination reports data collected between 2009 and 2012. MATERIALS AND METHODS The data on weight, height and age obtained from 143,34...

Probabilistic structural design is beset with a credibility problem. Uncertainties associated with errors in structural and aerodynamic modeling and quality of construction are not well characterized as statistical distributions. Therefore, many engineers are skeptical of the accuracy of failure probability predictions. We propose a probabilistic design optimization method, where the probabilit...

Segmentation methods for images often have cost functions which evaluate the (dis)similarity between pixels or segments. Thresholds on cost values are then used to decide whether or not to grow, join or split segments. The results for a given image critically depend on the selection of the threshold values. In remote sensing, a too low threshold will split up regions of constant ground cover an...

We show that the combination of X-ray scattering with a nanofocused beam and X-ray cross correlation analysis is an efficient way for the full structural characterization of mesocrystalline nanoparticle assemblies with a single experiment. We analyze several hundred diffraction patterns at individual sample locations, that is, individual grains, to obtain a meaningful statistical distribution o...

OBJECTIVE To determine the best statistical distribution of concentration data of major air pollutants in Shanghai. METHODS Four types of theoretic distributions (lognormal, gamma, Pearson V and extreme value) were chosen to fit daily average concentration data of PM10, SO2 and NO2 from June 1, 2000 to May 31, 2003 in Shanghai by using the maximum likelihood method. The fit results were evalu...

We analyze the locomotor behavior of the rat during exploration, and show that digitally collected data (time series of positions) provide a sufficient basis for establishing that the rat uses several distinct modes of motion (first, second, third, and sometimes fourth gear). The distinction between these modes is obtained by first segmenting the time series into sequences of data points occurr...

This article investigates the synaptic weight distribution of a self-supervised, sparse, and randomly connected recurrent network inspired by hippocampal region CA3. This network solves nontrivial sequence prediction problems by creating, on a neuron-by-neuron basis, special patterns of cell firing called local context units. These specialized patterns of cell firing--possibly an analog of hipp...

Introduction The NIfTI-1 image format (http://nifti.nimh.nih.gov/dfwg) contains a field intent code which signals the interpretation of the data values in the file. A number of codes are defined that correspond to standard statistical distributions. My goal in this document is to specify what these codes refer to, and also to document the user-level sample C functions provided at the NIfTI webs...

This paper deals with the classical problem of how to evaluate the joint rank statistics distributions for two independent i.i.d. samples from a common continuous distribution. It is pointed that these distributions rely on an underlying polynomial structure of negative binomial type. This property is exploited to obtain, in a systematic and unified way, various recursions, some well estabished...

The amplitude and pitch fluctuations of natural soundscapes often exhibit "1/f spectra", which means that large, abrupt changes in pitch or loudness occur proportionally less frequently in nature than gentle, gradual fluctuations. Furthermore, human listeners reportedly prefer 1/f distributed random melodies to melodies with faster (1/f0) or slower (1/f2) dynamics. One might therefore suspect t...