QSAR study has been carried out on the CDK2 inhibitory activity of 6-substituted 2-arylaminopurines in 0D- to 2D-Dragon descriptors. The derived models have revealed that reciprocal hyper-detour index (descriptor Rww) and path/walk 5 Randic shape PW5) played a pivotal role rationalization inhibition titled compounds. Molecular weight (MW), mean atomic volume scaled Carbon atom (Mv) properties s...

Recently, the algebraic theory of MV -algebras is intensively studied. In this paper, we extend the concept of derivation of $MV$-algebras and we give someillustrative examples. Moreover, as a generalization of derivations of $MV$ -algebraswe introduce the notion of $f$-derivations and $(f; g)$-derivations of $MV$-algebras.Also, we investigate some properties of them.

This article presents an analysis of the reliability power grid using data on failure rate medium voltage (MV) from last five years. The state was based provided by operator. purpose this is to analyze assessment connections various analytical methods, a simulation model and indicators. performed defined categories outages in terms their duration. made it possible determine energy quality indic...