Dissipationless hydrodynamics regularized by dispersion describe a number of physical media including water waves, nonlinear optics, and Bose–Einstein condensates. As in the classical theory of hyperbolic equations where a nonconvex flux leads to nonclassical solution structures, a nonconvex linear dispersion relation provides an intriguing dispersive hydrodynamic analogue. Here, the fifth orde...

In this work, a damped modified Kawahara equation (mKE) with cubic nonlinearity and two dispersion terms including the third- fifth-order derivatives is analyzed. We employ an effective semi-analytical method to achieve goal set for study. For purpose, ansatz implemented find some approximate solutions mKE. Based on proposed method, different formulas analytical symmetric approximations are for...

157. Effect of Antimicrobial Stewardship Program (ASP) on Perioperative Antibiotic Use in Cardiovascular Surgery in Japanese Tertiary Hospital Hideaki Kato, MD; Hiroko Sosa; Yoshifumi Sugiyama; Haruyo Kawahara; Masaaki Mori, MD, PhD; Takayuki Kariya, MD; Masahide Ohtsuka, MD, PhD; Keiji Uchida, MD, PhD; Yoshiaki Ishigatsubo, MD, PhD; Takeshi Kaneko, MD, PhD; Infection Control Department, Yokoha...

a r t i c l e i n f o Keywords: Invasive fish species Largemouth bass Bluegill Food web modeling Ecosystem attributes Lake Kawahara-oike The introduction of largemouth bass (Micropterus salmoides) and bluegill sunfish (Lepomis macrochirus) into the freshwater ecosystems of Japan has resulted in the suppression and/or replacement of native species, generating considerable concerns among resource...

Nilton T Kawahara, Clarissa Alster, Fauze Maluf-Filho, Wilson Polara, Guilherme M. Campos, Luiz Francisco Poli-de-Figueiredo (in memoriam) I Faculdade de Medicina da Universidade de São Paulo, (FMUSP), Department of Surgical Technique, São Paulo/SP, Brazil. II Faculdade de Medicina da Universidade de São Paulo, (FMUSP), Department of Gastroenterology, Gastrointestinal Endoscopy Unit, São Paulo/...

Circulations are similar to flows in capacity-constrained networks, with the difference that they also observe lower bounds and, unlike flows, are not directed from a source to a sink. We give a new description of circulations in networks using a technique introduced by Kawahara; he applied the same methods to network flows. We show the power and flexibility of his approach in a new application...

In this paper, we describe a speech re-synthesis tool using the fundamental frequency (F0) generation model proposed by Fujisaki et al. and STRAIGHT, designed by Kawahara, which can be used for listening experiments by modifying F0 model parameters. To create the tool, we first established a method for automatically estimating F0 model parameters by using genetic algorithms. Next, we combined t...