The relationship between space weather and influenza pandemics of the 19th 21st centuries COVID-19 pandemic is considered. All epidemics 19-21 developed only at extremes solar activity, difference in number infectious diseases Russia minimum maximum 11-year SA cycles more than 25 million people. took start minimums quasi-secular cycle. Weather factors characteristics population genetic composit...

In this paper we consider the estimation of the weights of optimal portfolios from the Bayesian point of view under the assumption that the conditional distribution of the logarithmic returns is normal. Using the standard priors for the mean vector and the covariance matrix, we derive the posterior distributions for the weights of the global minimum variance portfolio. Moreover, we reparameteri...

A new boundary detection approach for shape modeling is presented. It detects the global minimum of an active contour model's energy between two points. Initialization is made easier and the curve is not trapped at a local minimum by spurious edges. We modify the \snake" energy by including the internal regularization term in the external potential term. Our method is based on nding a path of m...

1. I n t r o d u c t i o n The s t u d y of molecu la r confo rmat ions is as fasc ina t ing a sub jec t as i t is u t t e r ly complex . A l t h o u g h the bas ic bu i ld ing blocks of molecules , the a toms , r e m a i n virt ua l l y unchanged in different c o m p o u n d s the versa t i l i ty of the ways t ha t they can be combined and reconfigure the o b t a i n e d a t o m chains resul ...

Let P be a graph property. A graph G is said to be locally P (closed locally P) if the subgraph induced by the open neighbourhood (closed neighbourhood, respectively) of every vertex in G has property P. The clustering coefficient of a vertex is the proportion of pairs of its neighbours that are themselves neighbours. The minimum clustering coefficient of G is the smallest clustering coefficien...

Density functional theory (DFT) at the hybrid B3LYP level has been applied to the germanium clusters Ge(9)(z) clusters (z = -6, -4, -3, -2, 0, +2, and +4) starting from three different initial configurations. Double-zeta quality LANL2DZ basis functions extended by adding one set of polarization (d) and one set of diffuse (p) functions were used. The global minimum for Ge(9)(2)(-) is the tricapp...