Practical Training of Students on the Extraction and Analysis of Big Data

The article deals with questions of studies, development and practical use in teaching complex laboratory work on extracting and analyzing big data to train specialists in the specialty 10.05.04 "Information and Analytical Security Systems", direction of training "Information sSecurity of Financial and Economic Structures" in the framework of the educational discipline "Distributed Automated Information Systems". Keywords: big data, data scientist, extraction, processing and analysis of big data, information security of financial and economic structures, the Internet, Yandex, Google, application programming interface –API

Advances in ab-initio theory of Multiferroics. Materials and mechanisms: modelling and understanding

Within the broad class of multiferroics (compounds showing a coexistence of magnetism and ferroelectricity), we focus on the subclass of "improper electronic ferroelectrics", i.e. correlated materials where electronic degrees of freedom (such as spin, charge or orbital) drive ferroelectricity. In particular, in spin-induced ferroelectrics, there is not only a {\em coexistence} of the two intriguing magnetic and dipolar orders; rather, there is such an intimate link that one drives the other, suggesting a giant magnetoelectric coupling. Via first-principles approaches based on density functional theory, we review the microscopic mechanisms at the basis of multiferroicity in several compounds, ranging from transition metal oxides to organic multiferroics (MFs) to organic-inorganic hybrids (i.e. metal-organic frameworks, MOFs)Comment: 22 pages, 9 figure