Economic and mathematical modeling of regional industrial processes

The paper presents a method for the parallel optimization of the structure of sown areas for calculating economic and mathematical models for the traditional and organic-oriented land use systems characterized by the introduction of an additional set of environmental criteria constraints. Based on the proposed methodology, an economic-mathematical model has been calculated and the effectiveness of the functioning of the Altai Foothills zonal agroecocluster has been proved. Considering the full involvement in the agricultural production turnover of land suitable to produce organic products, the level of profitability was 39.7% against 17.3% in case of optimizing the structure of the sown areas in the traditional system of agricultural production.peer-reviewe

Singularities, Lax degeneracies and Maslov indices of the periodic Toda chain

The n-particle periodic Toda chain is a well known example of an integrable but nonseparable Hamiltonian system in R^{2n}. We show that Sigma_k, the k-fold singularities of the Toda chain, ie points where there exist k independent linear relations amongst the gradients of the integrals of motion, coincide with points where there are k (doubly) degenerate eigenvalues of representatives L and Lbar of the two inequivalent classes of Lax matrices (corresponding to degenerate periodic or antiperiodic solutions of the associated second-order difference equation). The singularities are shown to be nondegenerate, so that Sigma_k is a codimension-2k symplectic submanifold. Sigma_k is shown to be of elliptic type, and the frequencies of transverse oscillations under Hamiltonians which fix Sigma_k are computed in terms of spectral data of the Lax matrices. If mu(C) is the (even) Maslov index of a closed curve C in the regular component of R^{2n}, then (-1)^{\mu(C)/2} is given by the product of the holonomies (equal to +/- 1) of the even- (or odd-) indexed eigenvector bundles of L and Lmat.Comment: 25 pages; published versio

The impact of World University Rankings on BRICS students' choices of universities (the case of the Ural Federal University)

World rankings affect universities’ positions on the global education market. The survey (2017-2018, UrFU) of Chinese students (n = 20) and experts (n = 4) found that for students the quality of education and their parents’ / friends’ opinions were the key factors in their university choice. Experts believe, however, that the role of rankings will grow and that high ranking positions will be used by universities to attract investment and improve their status

THE USE OF TOOLS OF THE FINANCIAL MARKET TO IMPROVE THE QUALITY OF SAVINGS OF CITIZENS

One of the development goals is still to improve the level and quality of life of citizens through the use of financial market instruments. For this purpose the Ministry of Finance has issued the special bonds (OFZ-n) in 2017 intended for citizens (ISIN code - RU000A0ZYXW7). These bonds should have interested citizens as an investment object, becoming an alternative to bank deposits. Data on the placement of the latest issues OFZ-n indicate a decline in inter-est to them from investors. The article discusses the details of the structure of OFZ-n bonds, which determine their investment qualities. It has concluded that the emergence of OFZ-n did not fundamentally affect the investment behavior of Russian citizens, as a result of which the quality of citizens’ savings portfolios remained at the same level

ALTERATION OF ACTIVE SUBSTANCE CONTENT IN "HEXACHLORAN DUST" PESTICIDE FORMULATION AT EXPOSURE TO ELECTRON BEAM

The most popular methods of organochlorinated pesticides (OCP) destruction, which are based on thermal dechlorination, are not ecologically safe. The other process – radiation-chemical degradation – has got some advantages. It does not involve high temperatures and expensive reagents. In this study, the effective OCP degradation was observed under irradiation of residuals of the active substance of ‘Hexachloran dust’ pesticide formulation, intended for utilization. Parameters for the preparation powder (dry form) exposure to electron beam are discussed. It is shown that at the exposure to electron beam at dose of 100 kGy, the degradation degree of hexachlorocyclohexane (HCH) isomers in a composition of active substance achieves 56.2–66.3%