There has been considerable demand for the development of virtual spaces. When virtual spaces such as virtual cities or virtual offices are created, the material colors of 3D models in these spaces greatly influence the appearance, so designers of virtual spaces must use proper material colors. Material colors of 3D models can be specified with ambient color, diffuse color, specular color, emis...

Structural color is anticipated to replace pigmented or chemical due its superior saturation, resolution, environmental friendliness, and longevity. We achieve a full-color gamut of structural colors anti-counterfeit functions by an all-dielectric chiral metasurface consisting half-gammadion-shaped resonators embedded in PMMA top TiO2 layer on quartz coated with ITO layer. The prominent resonan...

– One of the important applications of robots is in material handling and transport of various shaped objects. In cases where an object cannot be directly grasped by the robot gripper, and must be carried by a hook, it may be subject to undesirable swings during transport. This paper presents an analytical method for minimizing the oscillation of a suspended object during transport. This method...

Tan spot caused by the fungus Pyrenophora triticirepentis is a serious disease of wheat, which is on increase in recent years in Mediterranean region. In the field this fungus produces a diamond-shaped necrotic lesions with a yellow halo on wheat foliage. The objective of this study was to characterize and compare several monospore isolates of P. tritici-repentis collected from different infect...

We illustrate the vibrational modes of a drum shaped like the Koch snowflake. Vibrational modes are computed using a fairly standard finite difference technique applied to a recently published discrete approximation to the snowflake. The computations are all performed in Mathematica 6.0 that has substantial graphical improvements over Mathematica 5.2. In particular, vertex normals may be specif...

We propose a new procedure of partial cyclic reduction, where we apply a 2d -color ordering (with d=2, 3 the dimension of the problem), and use different operators for different gridpoints according to their color. These operators are chosen so that the gridpoints can be readily decoupled, and we then eliminate all colors but one. This yields a smaller cartesian mesh and box-shaped 9-point (in ...