Contemporary school has different possibilities than quarter of century ago. In result of inept changes it encounters many restrictions and problems connected related to studying, with difficult youth and fall of educational ...

The article is devoted to the problem of the formation of language competence, which is considered as an integrated property of a person possessing a complex of professionally meaningful for the teacher qualities. The ...

We study twisted conjugacy classes of a family of groups which are called Houghton’s groups Hn (n ∈ N), the group of translations of n rays of discrete points at infinity. We prove that the Houghton’s groups Hn have the ...

The main approaches to optimizing the competitive advantages of economic entities of Ukraine in the context of the implementation of the main provisions of the concept of sustainable development, taking into account the ...

The article highlights the main methodological and strategic aspects of supply chain management under crisis economic conditions. The authors defined the essence of the concept of «supply chain». In the supply chain ...

The aim of the following paper is to present the tools for adjusting research methods and techniques to research processes, developed by the author hereof. In order to evaluate and select individual research methods and ...

Let D = (V, A) be a finite simple directed graph (shortly digraph). A function f : V −→ {−1, 1} is called a twin signed dominating function (TSDF) if f(N −[v]) > 1 and f(N +[v]) > 1 for each vertex v ∈ V . The twin signed ...

We study the class of standardly stratified alge- bras introduced by Cline, Parshall and Scott, and its subclass of the so-called weakly properly stratified algebras, which generalizes the class of properly stratified ...