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825 results on '"Kuwata, S"'

1. Sampling theorem based Fourier-Legendre transform

Author

Kuwata, S. and Kawaguchi, K.

Subjects
Mathematical Physics, 33C45
Abstract

The product of any number of Legendre functions, under a restricted domain, can be expanded by the corresponding Legendre polynomials, with the coefficient being the sinc function. While an analogous expansion can be made for any number of Gengenbauer functions, it is not allowed for more than two Jacobi functions. To obtain such an expansion, the sampling theorem is of great availability., Comment: 9 pages

Published
2018

3. Meson mass spectrum using the Cayley-Dickson algebra

Author

Kuwata, S., Omoto, A., and Ishihara, S.

Subjects
Mathematical Physics, High Energy Physics - Phenomenology, 17B81
Abstract

From an injective map between the mass of the meson 16-plet and the eigenvalue of the right multiplication in the Cayley-Dickson algebra, we obtain the mass formula as 2 m_{D_s} = m_{eta_c} + m_{eta'}, which is in excellent agreement with experiment., Comment: 9 pages, 1 figure, to be published in Nuovo Cimento B

Published
2010
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4. Alternativity and reciprocity in the Cayley-Dickson algebra

Author

Kuwata, S., Fujii, H., and Nakashima, A.

Subjects
High Energy Physics - Theory
Abstract

We calculate the eigenvalue \rho of the multiplication mapping R on the Cayley-Dickson algebra A_n. If the element in A_n is composed of a pair of alternative elements in A_{n-1}, half the eigenvectors of R in A_n are still eigenvectors in the subspace which is isomorphic to A_{n-1}. The invariant under the reciprocal transformation A_n \times A_{n} \ni (x,y) -> (-y,x) plays a fundamental role in simplifying the functional form of \rho. If some physical field can be identified with the eigenspace of R, with an injective map from the field to a scalar quantity (such as a mass) m, then there is a one-to-one map \pi: m \mapsto \rho. As an example, the electro-weak gauge field can be regarded as the eigenspace of R, where \pi implies that the W-boson mass is less than the Z-boson mass, as in the standard model., Comment: To be published in J. Phys. A: Mathematical and General

Published
2006
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5. Born-Infeld Lagrangian using Cayley-Dickson algebras

Author

Kuwata, S.

Subjects
High Energy Physics - Theory
Abstract

We rewrite the Born-Infeld Lagrangian, which is originally given by the determinant of a $4 \times 4$ matrix composed of the metric tensor $g$ and the field strength tensor $F$, using the determinant of a $(4 \cdot 2^n) \times (4 \cdot 2^n)$ matrix $H_{4 \cdot 2^{n}}$. If the elements of $H_{4 \cdot 2^{n}}$ are given by the linear combination of $g$ and $F$, it is found, based on the representation matrix for the multiplication operator of the Cayley-Dickson algebras, that $H_{4 \cdot 2^{n}}$ is distinguished by a single parameter, where distinguished matrices are not similar matrices. We also give a reasonable condition to fix the paramete

Published
2003
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16. Effect of PM2.5 for hospitalization of cardiovascular diseases and medical expenses by age group: a nationwide study from the Japanese Registry Of All cardiac and vascular Diseases (JROAD)

Author

Kaihara, T, primary, Yoneyama, K, additional, Kuwata, S, additional, Mitarai, T, additional, Watanabe, M, additional, Koga, M, additional, Kamijima, R, additional, Ishibashi, Y, additional, Izumo, M, additional, Tanabe, Y, additional, Higuma, T, additional, Harada, T, additional, and Akashi, Y.J, additional

Published
2020
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18. Predictors of Left Ventricular Outflow Tract Obstruction After Transcatheter Mitral Valve Replacement

Author

Yoon SH, Bleiziffer S, Latib A, Eschenbach L, Ancona M, Vincent F, Kim WK, Unbehaum A, Asami M, Dhoble A, Silaschi M, Frangieh AH, Veulemans V, Tang GHL, Kuwata S, Rampat R, Schmidt T, Patel AJ, Nicz PFG, Nombela-Franco L, Kini A, Kitamura M, Sharma R, Chakravarty T, Hildick-Smith D, Arnold M, de Brito FS, Jr., Jensen C, Jung C, Jilaihawi H, Smalling RW, Maisano F, Kasel AM, Treede H, Kempfert J, Pilgrim T, Kar S, Bapat V, Whisenant BK, Van Belle E, Delgado V, Modine T, Bax JJ, Makkar RR, Yoon, Sh, Bleiziffer, S, Latib, A, Eschenbach, L, Ancona, M, Vincent, F, Kim, Wk, Unbehaum, A, Asami, M, Dhoble, A, Silaschi, M, Frangieh, Ah, Veulemans, V, Tang, Ghl, Kuwata, S, Rampat, R, Schmidt, T, Patel, Aj, Nicz, Pfg, Nombela-Franco, L, Kini, A, Kitamura, M, Sharma, R, Chakravarty, T, Hildick-Smith, D, Arnold, M, de Brito, F, J, R., Jensen, C, Jung, C, Jilaihawi, H, Smalling, Rw, Maisano, F, Kasel, Am, Treede, H, Kempfert, J, Pilgrim, T, Kar, S, Bapat, V, Whisenant, Bk, Van Belle, E, Delgado, V, Modine, T, Bax, Jj, and Makkar, Rr

Published
2019

21. Outcomes of transcatheter mitral valve replacement for degenerated bioprostheses, failed annuloplasty rings, and mitral annular calcification

Author

Yoon SH, Whisenant BK, Bleiziffer S, Delgado V, Dhoble A, Schofer N, Eschenbach L, Bansal E, Murdoch DJ, Ancona M, Schmidt T, Yzeiraj E, Vincent F, Niikura H, Kim WK, Asami M, Unbehaun A, Hirji S, Fujita B, Silaschi M, Tang GHL, Kuwata S, Wong SC, Frangieh AH, Barker CM, Davies JE, Lauten A, Deuschl F, Nombela-Franco L, Rampat R, Nicz PFG, Masson JB, Wijeysundera HC, Sievert H, Blackman DJ, Gutierrez-Ibanes E, Sugiyama D, Chakravarty T, Hildick-Smith D, de Brito FS, Jr., Jensen C, Jung C, Smalling RW, Arnold M, Redwood S, Kasel AM, Maisano F, Treede H, Ensminger SM, Kar S, Kaneko T, Pilgrim T, Sorajja P, Van Belle E, Prendergast BD, Bapat V, Modine T, Schofer J, Frerker C, Kempfert J, Attizzani GF, Latib A, Schaefer U, Webb JG, Bax JJ, Makkar RR, Yoon, Sh, Whisenant, Bk, Bleiziffer, S, Delgado, V, Dhoble, A, Schofer, N, Eschenbach, L, Bansal, E, Murdoch, Dj, Ancona, M, Schmidt, T, Yzeiraj, E, Vincent, F, Niikura, H, Kim, Wk, Asami, M, Unbehaun, A, Hirji, S, Fujita, B, Silaschi, M, Tang, Ghl, Kuwata, S, Wong, Sc, Frangieh, Ah, Barker, Cm, Davies, Je, Lauten, A, Deuschl, F, Nombela-Franco, L, Rampat, R, Nicz, Pfg, Masson, Jb, Wijeysundera, Hc, Sievert, H, Blackman, Dj, Gutierrez-Ibanes, E, Sugiyama, D, Chakravarty, T, Hildick-Smith, D, de Brito, F, J, R., Jensen, C, Jung, C, Smalling, Rw, Arnold, M, Redwood, S, Kasel, Am, Maisano, F, Treede, H, Ensminger, Sm, Kar, S, Kaneko, T, Pilgrim, T, Sorajja, P, Van Belle, E, Prendergast, Bd, Bapat, V, Modine, T, Schofer, J, Frerker, C, Kempfert, J, Attizzani, Gf, Latib, A, Schaefer, U, Webb, Jg, Bax, Jj, and Makkar, Rr

Published
2019

34. Transcatheter mitral valve chord repair

Author

Savic V, Pozzoli A, Gulmez G, Demir H, Batinkov N, Kuwata S, Weber A, Vogel R, Tanner F, Zuber M, Maisano F, Taramasso M, Savic, V, Pozzoli, A, Gulmez, G, Demir, H, Batinkov, N, Kuwata, S, Weber, A, Vogel, R, Tanner, F, Zuber, M, Maisano, F, and Taramasso, M

Published
2018

35. Recent advances in understanding and managing aortic stenosis

Author

Van Hemelrijck M, Taramasso M, De Carlo C, Kuwata S, Regar E, Nietlispach F, Ferrero A, Weber A, Maisano F, Van Hemelrijck, M, Taramasso, M, De Carlo, C, Kuwata, S, Regar, E, Nietlispach, F, Ferrero, A, Weber, A, and Maisano, F

Published
2018

38. Cardioband system as a treatment for functional mitral regurgitation

Author

Ferrero Guadagnoli A, De Carlo C, Maisano F, Ho E, Saccocci M, Cuevas O, Luciani M, Kuwata S, Nietlispach F, Taramasso M, Ferrero Guadagnoli, A, De Carlo, C, Maisano, F, Ho, E, Saccocci, M, Cuevas, O, Luciani, M, Kuwata, S, Nietlispach, F, and Taramasso, M

Published
2018

42. 834 How Accurately can Physicians Predict Invasive Physiology Using Coronary Angiography? Results of an International Multi-Centre Survey

Author

Nour, D., primary, Shun-shin, M., additional, Fung, M., additional, Howard, J., additional, Ahmed, Y., additional, Allahwala, U., additional, Alzuhairi, K., additional, Bhindi, R., additional, Chamie, D., additional, Cook, C., additional, Doi, S., additional, Funayama, N., additional, Hansen, P., additional, Horinaka, R., additional, Ishibashi, Y., additional, Hijikata, N., additional, Kaihara, T., additional, Kawase, Y., additional, Koga, M., additional, Kotecha, T., additional, Kuwata, S., additional, Manica, A., additional, Matsuo, H., additional, Nakayama, M., additional, Nijjer, S., additional, Petraco, R., additional, Rajkumar, C., additional, Ramrakha, P., additional, Ruparelia, N., additional, Seligman, H., additional, Sen, S., additional, Takahashi, T., additional, Tanabe, Y., additional, Warisawa, T., additional, Watanabe, A., additional, Weaver, J., additional, Yong, T., additional, Francis, D., additional, and Al-Lamee, R., additional

Published
2020
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