Результаты поиска по 'ecological diagnostics':
Найдено статей: 2
  1. Levich A.P., Bulgakov N.G., Risnik D.V., Mil'ko E.S.
    Biological and physico-chemical data from natural objects for ecological environmental monitoring
    Computer Research and Modeling, 2010, v. 2, no. 2, pp. 199-207

    Methods for establishing standards of environmental quality by data of ecological monitoring are proposed. These are: methods of bioindication by indices of species diversity and size structure of communities, by indices of fish productivity; method for searching for reasons of environmental trouble and ranking them by their contribution into the trouble; methods for standardization of factors which are important as causes of environmental trouble.

    Keywords: bioindication, ecological diagnostics, ecological standardization, phytoplankton, species diversity.
    Views (last year): 1. Citations: 9 (RSCI).
  2. Borisova L.R., Kuznetsova A.V., Sergeeva N.V., Sen'ko O.V.
    Comparison of Arctic zone RF companies with different Polar Index ratings by economic criteria with the help of machine learning tools
    Computer Research and Modeling, 2020, v. 12, no. 1, pp. 201-215

    The paper presents a comparative analysis of the enterprises of the Arctic Zone of the Russian Federation (AZ RF) on economic indicators in accordance with the rating of the Polar index. This study includes numerical data of 193 enterprises located in the AZ RF. Machine learning methods are applied, both standard, from open source, and own original methods — the method of Optimally Reliable Partitions (ORP), the method of Statistically Weighted Syndromes (SWS). Held split, indicating the maximum value of the functional quality, this study used the simplest family of different one-dimensional partition with a single boundary point, as well as a collection of different two-dimensional partition with one boundary point on each of the two combining variables. Permutation tests allow not only to evaluate the reliability of the data of the revealed regularities, but also to exclude partitions with excessive complexity from the set of the revealed regularities. Patterns connected the class number and economic indicators are revealed using the SDT method on one-dimensional indicators. The regularities which are revealed within the framework of the simplest one-dimensional model with one boundary point and with significance not worse than p < 0.001 are also presented in the given study. The so-called sliding control method was used for reliable evaluation of such diagnostic ability. As a result of these studies, a set of methods that had sufficient effectiveness was identified. The collective method based on the results of several machine learning methods showed the high importance of economic indicators for the division of enterprises in accordance with the rating of the Polar index. Our study proved and showed that those companies that entered the top Rating of the Polar index are generally recognized by financial indicators among all companies in the Arctic Zone. However it would be useful to supplement the list of indicators with ecological and social criteria.

    Keywords: machine learning methods, sustainable development, Arctic Zone of the Russian Federation, economic criteria, the Polar Index of companies.

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