益川理论简介：

其实益川的理论是关于基本粒子，简单的说就是对称性自发破缺。实验物理学家们在对基本粒子的研究中已经发现了许多对称性。但不幸的是，当时所发现的许多对称性却被证明只在近似的情况下才成立。当时有一种猜测，认为近似对称性是严格对称性自发破缺的产物。他们的理论提出了著名的CKM矩阵,预言夸克至少应有6种及理论上CP破坏的一种解释.他们的那篇论文的引用率高达5920次。该理论被很多实验证实,特别是1995年顶夸克的发现和2001年中性B介子衰变CP破坏的发现。

--ps：可以没有机会见见大师的亲自讲解，让身在葉大的我很遗憾。

 

2

看似简单 Harmonic Fluids算法：

 以前计算机动画电影中，声音可以通过录音等方式后加进去。但随着虚拟世界越来越多的交互和浸入，研究人员指出声音需要自动产生，与发生的事件相匹配，不可能事前预测到。录音不能再满足需要。研究人员使用名为Harmonic Fluids的算法模拟出水滴，水持续流动，水溅开的声音。美国康奈尔大学的Doug James教授将在ACM大会上作关于Harmonic Fluids Algorithm的报告。

Fluid sounds, such as splashing and pouring, are ubiquitous and familiar but we lack physically based algorithms to synthesize them in computer animation or interactive virtual environments. We propose a practical method for automatic procedural synthesis of synchronized harmonic bubble-based sounds from 3D fluid animations. To avoid audio-rate time-stepping of compressible fluids, we acoustically augment existing incompressible fluid solvers with particle-based models for bubble creation, vibration, advection, and radiation. Sound radiation from harmonic fluid vibrations is modeled using a time-varying linear superposition of bubble oscillators. We weight each oscillator by its bubble-to-ear acoustic transfer function, which is modeled as a discrete Green's function of the Helmholtz equation. To solve potentially millions of 3D Helmholtz problems, we propose a fast dual-domain multipole boundary-integral solver, with cost linear in the complexity of the fluid domain's boundary. Enhancements are proposed for robust evaluation, noise elimination, acceleration, and parallelization. Examples of harmonic fluid sounds are provided for water drops, pouring, babbling, and splashing phenomena, often with thousands of acoustic bubbles, and hundreds of thousands of transfer function solves.

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