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Biysk, Russia

The Shukshin Altai State Academy of Education is a federal state budget educational institution of higher professional education in Biysk, Altai Krai. Wikipedia.

The work contains materials of bird count performed on August 03-09, 2013 along the Bolshaya Rechka River within the "Bolsherechensky" state reserve. We used a standard technique of route monitoring with unlimited surveillance area. The length of the route was 59 km; the total accounting area was 17.7 km2. The total of 93 bions and 40 breeding areas of 9 species of birds have been found. Another 4 species were found in the "Bolsherechensky" state reserve and its neighborhood during fragmentary observations in 2012. The research made it possible to conclude that the surveyed area is inhabited by fairly significant populations of common honey buzzards, black kites, sparrow hawks, common buzzards, greater spotted eagles, white-Tailed eagles and hobby falcons. The greatest number is observed in populations of black kites (27-28 nesting couples) and sparrow hawks (19-20 couples). Source

Lopatkin N.N.,Altai State Academy of Education
2015 International Siberian Conference on Control and Communications, SIBCON 2015 - Proceedings

The paper proposes some new expressions in several coordinate systems (oblique-angled 60- and 120-degree coordinates, barycentric and affine coordinates on triangles) for the voltage space vector of the multilevel voltage source inverter. The offered space vector representations can be useful for the real time digital signal processor control of converters, some of them lead to the algorithmic simplifications. © 2015 IEEE. Source

The taxonomy of the genus Leptosciarella Tuomikoski 1960 in Altai region within Altaiskii Krai and the Republic of Altai was studied. Eleven species were recognized, including three new species that are described and illustrated: Leptosciarella (L.) ulagana Komarova sp. n., L. (L.) angustistylus Komarova sp. n., L. (L.) senex Komarova sp. n. Additionally, L. (L.) fuscipalpa (Mohrig et Mamaev 1979) and L. (L.) truncata (Tuomikoski 1960) are reported from Altai for the first time. A key to the Altai species is provided. Source

Lopatkin N.N.,Altai State Academy of Education | Zinoviev G.S.,Novosibirsk State Technical University | Zotov L.G.,Novosibirsk State Technical University
2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

Increase of power demands of DC electric locomotives requires increasing catenaries voltage (which presently is 3 kV, 1.5 kV and 0.75 kV, respectively) 4, 6, 8, 10 times and more. At the traction substation, the rectifier will be adapted. The existing traction contact network (catenaries) is kept for direct current, and the novel N-cell dc/dc bidirectional converter without transformer will be located on the electric locomotive. Each cell voltage is defined by the locomotive power train DC input level, thus balancing of capacitor voltages is not required. Simulation results of the proposed 6-cell converter have confirmed the validity of predicted properties of the converter. Realization of a 10 kW model unit has been already started. The proposed converter added with four alternating current valves and the reversible rectifier, allows implementing of the galvanic separation of the load by using the output transformer operating at raised frequency. © 2010 IEEE. Source

Lopatkin N.N.,Altai State Academy of Education
2014 12th International Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2014 - Proceedings

The paper deals with two key oblique-angled coordinate systems for the space vector representation of the multilevel voltage source inverter which are considered as the coordinate systems of two delta voltages. Simplicity of the algorithm of the choice of the three nearest vectors to the reference and the determining of their actions durations under space vector PWM (SVPWM) realization in oblique-angled coordinates system is shown. The roles of the integer values and the fractional values of the relative delta voltages are revealed. The conclusion is drawn that the oblique-angled 60- and 120-degree coordinates are equivalent and similar from the point of view of steps, operations and results of the SVPWM algorithm application. The insertion of calculations in oblique-angled coordinates operations (with use of the presented formulas of corresponding transformations) as the subblock into the basic algorithm of calculations on orthogonal components has been proposed. © 2014 IEEE. Source

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