Spatial cognition research has recently made much progress in understanding the cognitive representations and processes underlying human wayfinding. Many theoretical assumptions about the concept of landmark salience have been established. In this context it is important to define perceptual (or visual) and structural landmark salience. Structural salience is defined as the position of a landma...

the geometric morphometrics method was applied to study the morphological differences in 95 specimens of kura barbel (barbus lacerta, heckel 1834) collected from three riverine ecosystems of the sefidrud basin, viz. taleghan, totkabon and kloraz rivers.  for this purpose, the left sides of the specimens were photographed. then, 14 landmark-points were defined and digitized on 2d pictures using ...

allogeneic hematopoietic stem cell transplantation (hsct) is the most effective therapy to prevent relapse in acute lymphocytic leukemia (all). this benefit is affected by non-relapse mortality (nrm) due to complications such as graft versus host disease (gvhd). a new approach in analyzing time-dependent covariates in competing risks is landmark analysis. so, the aim of this study is to evaluat...

In this paper a numerical method to compute principal component geodesics for Kendall’s planar shape spaces which are essentially complex projective spaces is presented. Underlying is the notion of principal component analysis based on geodesics for non-Euclidean manifolds as proposed in an earlier paper by Huckemann and Ziezold (2006). Currently, principal component analysis for shape spaces i...

We have studied a number of software tools dealing mainly with morphometric analysis of images reccommended by our collaborators. The study not only helps us to be aware of the existing tools in the field, but also points the way towards developing our own software. The aim is to cover the project’s requirements based on use in scientific analyses.