Symmetry is defined as correspondence in size, shape and relative position of parts on opposite sides of a dividing line or median plane. Although the human body has a symmetrical appearance when viewed externally, most internal organs are asymmetrical with respect to the left and right sides. Human body shows anatomical as well as functional asymmetries: some of these are of great clinical sig...

BACKGROUND Large community outbreaks of pandemic A (H1N1) 2009 occurred between October and December 2009 in Mongolia. A serological study was conducted among the general population by testing paired sera collected before and after the first wave of pandemic in Selenghe province, Mongolia. None of the study participants had been vaccinated for pandemic A (H1N1) 2009 before the second samples we...

If φ is a nontrivial automorphism of a thick building ∆ of purely infinite type, we prove that there is no bound on the distance that φ moves a chamber. This has the following group-theoretic consequence: If G is a group of automorphisms of ∆ with bounded quotient, then the center of G is trivial.

It is well known in cluster randomised trials with a binary outcome and a logistic link that the population average model and cluster specific model estimate different population parameters for the odds ratio. However, it is less well appreciated that for a log link, the population parameters are the same and a log link leads to a relative risk. This suggests that for a prospective cluster rand...

Abstract Let A be a reduced incidence relation between n lines and m points. Suppose that (a) Through each two points there pass λ lines (b) Each two lines intersect in μ points. If λ μ = = 1 assume, moreover, that there are four points no three of which are on one line. Then n m = , λ μ = , and there is a number r such that all lines have r points and through each point there pass r lines. The...

In this article we give a general method to compute sets of algebraic curves with prescribed incidence relations and tropicalizations. It generalizes the geometric constructions presented in Tabera, 2005 to the non linear case.