*第3回(8/23) [#r5b0cf1b]
8月23日(木) 10時00分〜 (2時間程度を予定)

**Magnetic Net and a Bouncing Magnetic Ball [#c2093611]

 [[Haidule Sarafian 氏>http://www2.yk.psu.edu/facstaff/employees/files/database.php?userid=has2]]

Motivated by observing a tennis ball bounce off of a tennis racket we envision a parallel scenario where a magnetic ball bounces off a virtual magnetic net. A steady DC current in a closed horizontal loop casts the  invisible elastic magnetic net. Contrary to a mechanical net the magnetic net continuously stays in contact  with the magnetic ball. By adjusting the relevant parameters we seek for steady bounces. The equation describing the oscillation is a highly nonlinear differential equation and is symbolically unsolvable. Deploying Mathematica [1] we solve the equation numerically conducive to kinematics. Inclusion of viscosity generalizes the scope of the analysis resulting modified kinematics. We include also a 3D animation simulating the nonlinear oscillations of the magnetic ball.

**Revisiting Magnetic Net and a Bouncing Magnetic Ball [#u90a2a49]

 [[Haidule Sarafian 氏>http://www2.yk.psu.edu/facstaff/employees/files/database.php?userid=has2]]

Recently the author reported the feasibility of envisioning a scenario where a massive permanent magnetic dipole bounces off and oscillates about an invisible horizontal magnetic net in the presence of gravity. The scenario has been revisited, modifying its physical contents. The modification embodies analysis of the impact of the induced current due to the falling magnetic dipole. The induced current counteracts the conduction current and alters the dynamics and kinematics of the motion. This rapid communication reports the recent advances.

**Swarm Intelligence Techniques for Reconstruction of Free-Form Curves and Surfaces [#j97a01b0]

 [[Andres Iglesias 氏>http://personales.unican.es/iglesias/]]

Curve/surface reconstruction from clouds of data points is a very important task with outstanding applications in the automotive, aerospace and ship building industries, to mention just a few. It is very challenging too, as classical optimization methods fail to obtain optimal solutions for this problem. Therefore, despite intensive research in the field, there is still a lack of effective methods to carry out all the steps involved in the process. In recent years, it has been suggested that metaheuristics might be applied in order to overcome such difficulties. In this talk we explore the possibilities of some of these tehcniques, an show how they can be successfully applied to tackle this issue. The talk will show our last contributions for solving this problem along with the possibilities for future developments in the field.

*第2回(8/17) [#qf9a0bb0]
**実在するとはどういうことか:メタ形而上学研究から見えてくるもの [#n1f04bf9]

8月17日(金) 13時30分〜 (2時間程度を予定)

 [[小山 虎 氏>http://researchmap.jp/read0054855/]]



*第1回(8/8) [#ydf5c483]
**ローレンツ対称性がない場合の南部・ゴールドストーンモード [#od0ce700]

8月8日(水) 15時00分〜 (2時間程度を予定)

 [[渡辺 悠樹 氏>http://panic.berkeley.edu/~watahoo/]]
([[米国カリフォルニア大学バークレイ校 大学院生(博士課程)>http://ut-osac.org/todai11w/111218Watanabe.pdf]] )


H. Watanabe and H. Murayama,
Unified Description of Nambu-Goldstone Bosons without Lorentz Invariance,
[[Phys. Rev. Lett. 108, 251602 (2012)>http://prl.aps.org/abstract/PRL/v108/i25/e251602]]. 
([[e-print arXiv:1203.0609>http://jp.arxiv.org/abs/1203.0609]])

American Physical Society の [[exceptional research>http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.108.251602]] に選ばれました


名古屋大学 情報科学研究科 複雑系科学専攻 多自由度システム情報論講座