Folded nodes occur in generic slow-fast dynamical systems with two slow variables. Open regions of initial conditions flow into a folded node in an open set of such systems, so folded nodes are an important feature of generic slow-fast systems. Twisting and linking of trajectories in the vicinity of a folded node have been studied previously, but their consequences for global dynamical behavior...

Natrix natrix (Linnaeus, 1758) is a common species distributed from Central Europe to Asia. In this range, it forms four subspecies that include several mitochondrial evolutionary lineages. One of the lineages, so-called mtDNA lineage 8, has wide distribution Baltic area Anatolia and Kazakhstan. Anatolia, meets others, however, their occurrence unclear, especially in south-eastern Türkiye where...

Minimum storage regenerating codes have minimum storage of data in each node and therefore are maximal distance separable (MDS for short) codes. Thus, the number of nodes is upper bounded by 2, where b is the bits of data stored in each node. From both theoretical and practical points of view (see the details in Section 1), it is natural to consider regenerating codes that nearly have minimum s...

BACKGROUND HLA genes are highly polymorphic and certain alleles are frequent only in specific populations. Therefore, HLA is a unique tool for studying the genetic relation between different populations. Iranians are ethnically diverse people and one of the major ethnic groups in Iran is Lur population inhabiting along the central and southern parts of Zagros Chain Mountain. OBJECTIVE Genetic...