We present a method to extract principal deformation modes from a set of articulated models describing the human spine. The spine was expressed as a set of rigid transforms that superpose local coordinates systems of neighbouring vertebrae. To take into account the fact that rigid transforms belong to a Riemannian manifold, the Fréchet mean and a generalized covariance computed in the exponenti...

Genetic diversity estimation of plant materials is one of the important pre-breeding activities in breeding field crops. Twenty-one microsatellite markers used to assess genetic diversity and relationship of 68 sunflower genotypes (Helianthus annuus L.). All of 21 pairs of SSR (Simple Sequence Repeats) markers produced a total number of 49 polymorphic bands. DNA fragments ranged from 9...

the genetic diversity of 48 wheat genotypes was studied by rapd markers at 2012 in laboratory of department of agronomy and plant breeding, university of mohaghegh ardebili. 10 primers from 70 used primers showed suitable banding patterns. these primers totally produced 73 polymorphic bands with mean 7.3 for each primer. the number of bands for 55 and 59 primers were 5 and 11, respectively. the...

This paper discusses the use of interactive graphics to teach multivariate data analysis to Psychology students. Three techniques are explored through separate activities: parallel coordinates/boxplots; principal components/exploratory factor analysis; and cluster analysis. With interactive graphics, students may perform important parts of the analysis ―by hand,‖ using techniques such as pointi...