Relation between direct waveQand codaQ:a numerical approach

On the Relation between Mathematical and Numerical Relativity

The large scale binary black hole effort in numerical relativity has led to an increasing distinction between numerical and mathematical relativity. This note discusses this situation and gives some examples of succesful interactions between numerical and mathematical methods is general relativ-

A Direct Numerical Approach to Perspective Shape-from-Shading

We introduce a novel numerical method for a recently developed perspective Shape-from-Shading model. In order to discretise the corresponding partial differential equation (PDE), Prados et al. employed the dynamical programming principle yielding a Hamilton-Jacobi-Bellman equation. We reduce that model to its essential, namely to the underlying Hamilton-Jacobi equation. For this PDE, we propose...

On the Relation between Direct and Continuation Semantics

The Rhetorical - Aesthetic Approach to Constructing the Relation between Images and Visual Inventions with Global Politics

Images and photos play an important role in our understanding of domestic and international events. Today we are living in the age of the visualization of politics. The images are vague, rhetorical, and aesthetic components of political and social phenomena and can give them a beautiful or detestable structure. In the digital age, images in and of themselves can define our structure and vision ...

Temporally regularized direct numerical simulation

Experience with fluid-flow simulation suggests that, in some instances, under-resolved direct numerical simulation (DNS), without a residual-stress model per se but with artificial damping of small scales to account for energy lost in the cascade from resolved to unresolved scales, may be as reliable as simulations based on more complex models of turbulence. One efficient and versatile manner t...