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Найдено 5 547 публикаций
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Статья
Vostokov S., Haustov N., Zhukov I. et al. Vestnik of the St. Petersburg University: Mathematics. 2018. Vol. 51. No. 3. P. 114-123.
Добавлено: 19 апреля 2021
Статья
Balashov V., Zlotnik Alexander, Savenkov E. Russian Journal on Numerical Analysis and Mathematical Modelling. 2017. Vol. 32. No. 6. P. 347-358.
Добавлено: 26 февраля 2017
Статья
Palamarchuk E. S. Automation and Remote Control. 2016. Vol. 77. No. 10. P. 1756-1767.
Добавлено: 21 октября 2016
Статья
Min Namkung, Younghun K. Scientific Reports. 2018. Vol. 8. No. 1. P. 6515-1-6515-13.
Добавлено: 16 ноября 2020
Статья
Régnier M., Eugenia F., Victor Yakovlev et al. Algorithms for Molecular Biology. 2014. Vol. 9. No. 25.
Добавлено: 22 января 2015
Статья
Shcherbakov V. P., Khokhlov A., Sycheva N. K. Izvestiya - Physics of the Solid Earth. 2019. Vol. 55. No. 1. P. 182-194.

The consistency of the empirical data on the paleointensity and paleoinclinations contained in the BOROKPINT paleointensity world database with the Geocentric Axial Dipole (GAD) hypothesis and the Giant Gaussian Process (GGP) model describing the geomagnetic field variations in the Brunhes epoch is tested. The calculation procedure is based on the representation of the geomagnetic field potential by the sum of the spherical functions of a spatial coordinate with random coefficients, which enables the computer simulation of the data that correspond to the given statistical characteristics of the coefficients. The estimation shows that according to the Kolmogorov–Smirnov and Anderson–Darling tests, the GAD hypothesis in its canonical form should be rejected. The extension of GAD to GGD with nonzero time-average quadrupole and octupole terms brings the paleointensity and paleoinclination data into agreement with the GGP model realizations; however, these models turn out to be mutually exclusive because their parameters are inconsistent with each other. Testing the paleoinclination data against GDP model demonstrates the necessity of introducing a small correction to the purely dipole component of the geomagnetic field. At the same time, the analysis of the paleointensity data shows that these data with a very high probability agree with the GGP models with a high quadrupole contribution making up 1/3 of the dipole coefficient, which is strongly at odds with the parameters of the model corresponding to the paleoinclination data. This inconsistency is most probably caused by the artifacts due to the incorrect determinations of paleointensity; however, this interpretation leaves unsolved the question about the causes of such a strong latitudinal dependence of the intensity of the Virtual Axial Dipole Moment (VADM) what follows from the empirical data.

Добавлено: 16 июня 2021
Статья
Malyshev D. Journal of Applied and Industrial Mathematics. 2012. Vol. 6. No. 1. P. 97-99.
Добавлено: 7 декабря 2012
Статья
Shnourkoff P. V., Novikov D. A. Working papers by Cornell University. Series math "arxiv.org". 2018. No. arXiv:1811.10993 [q-fin.GN]. P. 1-15.
Добавлено: 26 февраля 2019
Статья
Zyablov V., Rybin P. Problems of Information Transmission. 2012. Vol. 48. No. 4. P. 297-323.
Добавлено: 11 декабря 2017
Статья
Podinovskiy V. V., Potapov M. A. Automation and Remote Control. 2019. Vol. 80. No. 7. P. 1294-1303.

We give a survey of approaches for analyzing the sensitivity of non-dominated alternatives to changes in the parameters of partial quasi-orderings that define preferences. Such parameters can include values of importance coefficients for different criteria or boundaries of interval estimates of the degrees of superiority in the importance of some criteria over others, boundaries of intervals of criteria value tradeoffs uncertainty, and others.

Добавлено: 22 августа 2019
Статья
Ayano T., Buchstaber V.M. Chebyshevskii Sbornik. 2020. Vol. 21. No. 1. P. 9-50.
Добавлено: 17 июня 2021
Статья
Golubtsov P., Steinshamn S. I. Ecological Modelling. 2019. Vol. 392. P. 67-81.
Добавлено: 18 января 2019
Статья
Liudmila I. Kuzmina, Osipov Y. V., Zheglova Y. G. International Journal of Non-Linear Mechanics. 2018. Vol. 105. P. 242-248.
Добавлено: 1 июля 2018
Статья
Liudmila Kuzmina, Bedrikovetsky P., You Z. et al. Chemical Engineering Journal. 2017. Vol. 330. P. 1148-1159.
Добавлено: 7 сентября 2017
Статья
Didenkulova I., Pelinovsky E. Pure and Applied Geophysics. 2013. Vol. 170. No. 9. P. 1661-1671.
Добавлено: 15 октября 2013
Статья
Bagaev A. V., Zhukova N. Journal of Geometry and Physics. 2019. Vol. 142. P. 80-91.
Добавлено: 26 апреля 2019
Статья
Palamarchuk E. S. Automation and Remote Control. 2018. Vol. 79. No. 2. P. 289-299.
Добавлено: 1 июня 2018
Статья
Chari V., Loktev S. Journal of Algebra. 2012. Vol. 349. No. 1. P. 317-328.

Мы отождествляем sl(n+1)-изотипические компоненты глобальных модулей Вейля с некоторыми естественными подпространствами кольца многочленов от k переменных. Затем мы применяем теорию представлений алгебр токов к классическим задачам теории инвариантов.

Добавлено: 29 сентября 2012
Статья
Belenky A., Fedin G., Kornhauser A. L. International Journal of Public Administration. 2020.

Regional authorities consider the expediency of developing a new cargo transportation hub in the region in which it would provide transshipment services. It is considered that each transportation operator working in the region will use these services only if they are competitive with the currently existing ones. This competitiveness for a particular cargo means that the total transportation tariff for moving this cargo does not exceed (substantially or in principle) the (minimal) currently existing one as a result of including a transshipment via the hub in the transportation scheme for the cargo. A verifiable sufficient condition for the transshipment service competitiveness is proposed. Its verification consists of establishing the solvability of a system of linear inequalities being part of the system of constraints in the problem of finding optimal competitive transshipment tariffs for a set of cargoes expected to be moved via the hub. The latter problem is formulated as a quadratic programming one.

Добавлено: 21 декабря 2020
Статья
Lei F., Li F., Liu H. et al. Science China Mathematics. 2020. Vol. 63. No. 10. P. 1997-2004.

The main results of the paper are that we give a necessary and sufficient condition for a surface sum of two handlebodies along a connected surface to be a handlebody as follows: (1) The annulus sum H = H1∪AH2 of two handlebodies H1 and H2 is a handlebody if and only if the core curve of A is a longitude for either H1 or H2; (2) Let H = H1Sg,b H2 be a surface sum of two handlebodies H1 and H2 along a connected surface S = Sg,b,,b ≥ 1, ni = g(Hi) ≥ 2, i = 1, 2. Suppose that S is incompressible in both H1 and H2. Then H is a handlebody if and only if there exists a basis J = {J}1,…, Jm with a partition (J1, J2) of J such that J1 is primitive in H1 and J2 is primitive in H2.

 

Добавлено: 27 октября 2020