Hiroki Kitabayashi

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The space harmonic method is used to analyze surface acoustic wave (SAW) propagation under an infinite periodic metal grating on ZnO/diamond composite layered substrates. Dispersion properties for shorted and open gratings are derived as a function of the thickness of the grating electrodes. From these dispersion relations, the coupling of modes (COM)(More)
Y. Unno a , H. Kitabayashi b , B. Dick g , T. Dubbs j , A. Grillo j , M. Ikeda b , Y. Iwata b , S. Kashigin j , E. Kitayama h , W. Kroeger j , T. Kohriki a , T. Kondo a , G. Moorhead g , D. Morgan k , I. Nakano h , T. Ohmoto b , T. Ohsugi b , P.W. Phillips i , J. Richardson 1, f 1 , W. Rowe j , H.F.-W. Sadrozinski j , K. Sato b , J. Siegrist e , E. Spencer(More)
Walking is an easy exercise for maintaining health, although there are several environmental factors, such as road congestion or slopes, which are stressful for pedestrians, especially elders. Therefore, a pedestrian navigation system is required to recommend a less stressful route for a user by estimating such environmental factors. Towards realizing such(More)
Y. Unno a , H. Kitabayashi b , B. Dick g , T. Dubbs j , A. Grillo j , M. Ikeda b , Y. Iwata b , S. Kashigin j , E. Kitayama h , W. Kroeger j , T. Kohriki a , T. Kondo a , G. Moorhead g , D. Morgan k , I. Nakano h , T. Ohmoto b , T. Ohsugi b , P.W. Phillips i , J. Richardson 1,f , W. Rowe j , H.F.-W. Sadrozinski j , K. Sato b , J. Siegrist e , E. Spencer j ,(More)
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