Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Vesselin Vatchev"'
Autor:
Ranis Ibragimov, Vesselin Vatchev
Publikováno v:
Journal of Vibration Testing and System Dynamics. 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bde75c8db35e9f702b91099d62b123f
https://doi.org/10.5890/jvtsd.2022.06.005
https://doi.org/10.5890/jvtsd.2022.06.005
Autor:
Austin Biondi, Guang Lin, Sheng Zhang, Nathan Arndt, Ranis N. Ibragimov, Vesselin Vatchev, Maria Castillo
Publikováno v:
Journal of Applied Mathematics and Physics. :2256-2274
The purpose of the research was to investigate two-dimensional modeling of efficiency of mixing, resulting from the reflection of a linear internal wave field (IWF) off a continental slope. Efficiency of deep ocean mixing was associated with the ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b34f62be52765b97925ed53ceee72d7
https://doi.org/10.4236/jamp.2020.810169
https://doi.org/10.4236/jamp.2020.810169
Autor:
Vesselin Vatchev, Zhijun Qiao
Publikováno v:
Wave Motion. 112:102929
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ae1a757fa1c5ab3cf0e6ad7fb476ab9
https://doi.org/10.1016/j.wavemoti.2022.102929
https://doi.org/10.1016/j.wavemoti.2022.102929
Autor:
Vesselin Vatchev
Publikováno v:
Mathematical Modelling of Natural Phenomena. 11:133-144
A moving average transform in the plane with a variable size and shape window depending on the position and the ’time’ is studied. The main objective is to select the window parameters in such a way that the new transform converges smoothly to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24e6f75b53925f903aa7aafe6231e249
https://doi.org/10.1051/mmnp/201611210
https://doi.org/10.1051/mmnp/201611210
Autor:
Vesselin Vatchev
Publikováno v:
Journal of Nonlinear Mathematical Physics. 27:647
We consider decompositions of two-soliton solutions for the good Boussinesq equation obtained by the Hirota method and the Wronskian technique. The explicit forms of the components are used to stud...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2306d05f5ec575d982f5e84ede272eaf
https://doi.org/10.1080/14029251.2020.1819610
https://doi.org/10.1080/14029251.2020.1819610
Autor:
Vesselin Vatchev
Publikováno v:
Journal of Fourier Analysis and Applications. 21:715-733
In the paper we construct an analytic pseudospectral interpolant to a monotone interpolating table. The approximant is a sum of a linear function and a trigonometric polynomial of degree depending on the number and variation of the interpolating cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f27930ef664fae935b59dfcfbca2141
https://doi.org/10.1007/s00041-015-9394-1
https://doi.org/10.1007/s00041-015-9394-1
Autor:
Vesselin Vatchev
Publikováno v:
Springer Proceedings in Mathematics & Statistics ISBN: 9783319599113
In this paper, we study a class of trigonometric polynomials that exhibit properties expected from intrinsic mode functions. In a series of lemmas, we provide sufficient conditions for a positiveness of the instantaneous frequency, number of zeros an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6263f55d6cb703f5479b4f3b385c5ec7
https://doi.org/10.1007/978-3-319-59912-0_18
https://doi.org/10.1007/978-3-319-59912-0_18
Autor:
Ranis N. Ibragimov, Vesselin Vatchev
Publikováno v:
Mathematical Modelling of Natural Phenomena. 9:138-147
In the present paper we study the reconstruction of a structured quadratic pencil from eigenvalues distributed on ellipses or parabolas. A quadratic pencil is a square matrix polynomial QP (λ) = M λ2 +C λ +K , where M , C , and K are real square m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42cfef44e8dd7aa8b598286c313c1850
https://doi.org/10.1051/mmnp/20149509
https://doi.org/10.1051/mmnp/20149509
Autor:
J. Del Castillo, Vesselin Vatchev
Publikováno v:
BIT Numerical Mathematics. 53:779-790
The interpolating spline or trigonometric polynomial to a function at equally spaced points approximates the Dirichlet partial sums of its Fourier series with accuracy depending only on the neglected coefficients. We show that the Fejer mean of the D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba27085e2ba7e6fe0f0cbd05defa84d0
https://doi.org/10.1007/s10543-013-0425-5
https://doi.org/10.1007/s10543-013-0425-5
Autor:
Ranis N. Ibragimov, Vesselin Vatchev
Publikováno v:
Physics Letters A. 376:94-101
The spectral models of Garrett and Munk (1972, 1975) continue to be a useful description of the oceanic energy spectrum. However, there are several ambiguities (many of them are summarized, for example, in Levine, 2002) that make it difficult to use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6988e1b90a79c44708e08c2f5d66fec
https://doi.org/10.1016/j.physleta.2011.10.039
https://doi.org/10.1016/j.physleta.2011.10.039