セミナー発足に際してのごあいさつ(1997.4)


第 283 回 Q-NA セミナー
日     時2011 年 11月 29日 (火) 15:30 - 17:00
場     所九州大学伊都キャンパス 総合学習プラザ1階 工学部第5講義室
講 演 者Michael Plum (Karlsruher Institut für Technologie)
題     目A computer-assisted proof for photonic band gaps
概     要The lecture is concerned with photonic crystals, modeled by a spectral problem for Maxwell's equations with periodic permittivity. By Floquet-Bloch theory, the spectrum has band-gap structure, but by purely analytical means it is extremely difficult and tedious to decide if the spectrum really contains gaps. We propose a computer-assisted method for proving (in the strict sense) the presence of such spectral band gaps, using eigenvalue enclosure techniques and a perturbation argument.

(joint work with Vu Hoang, Christian Wieners, and Henning Behnke)
備     考前期とは会場が異なりますのでご注意ください. お車でお越しの場合にはこの案内を印刷してご持参のうえ,入構の際に守衛所にてご掲示ください.
 
第 284 回 Q-NA セミナー
日     時2011 年 12月 6日 (火) 15:30 - 17:00
場     所九州大学伊都キャンパス 総合学習プラザ1階 工学部第5講義室
講 演 者Monique Chyba (University of Hawaii)
題     目Geometric optimal control
概     要Differential geometric techniques have proved to be an asset to in control theory the past few decades. The major focus of the talk is to illustrate this fact through examples. We will focus on three applications. First, we will address the guidance and navigation problem for autonomous underwater vehicles. Those are model as controlled affine connection systems and efficient trajectories are designed using a newly developed optimal algorithm as well as kinematic reductions. Second, the formation of the brain at the early embryonic stage will be discussed. An innovative model as well as simulations will be presented. Finally, we will pose the problem of the detection of natural earth satellites and the possibility of a rendez vous mission.
備     考最適化セミナーとの合同セミナーです.前期とは会場が異なりますのでご注意ください. お車でお越しの場合にはこの案内を印刷してご持参のうえ,入構の際に守衛所にてご掲示ください.

世話人
田上 大助 (九州大学 マス・フォア・インダストリ研究所)
渡部 善隆 (九州大学 情報基盤研究開発センター)

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