We study methods for drawing trees with perfect angular resolution, i.e., with angles at each node v equal to 2π/d(v). We show: 1. Any unordered tree has a crossing-free straight-line drawing with perfect angular resolution and polynomial area. 2. There are ordered trees that require exponential area for any crossing-free straight-line drawing having perfect angular resolution. 3. Any ordered t...

The wire drawing process is extensively used in manufacturing components such as rivet, screw, welding wire, etc. In this work, an analytical of the wire drawing process has been considered for two-stage operation. ABAQUS commercial Finite Element code has been used to obtained the drawing force. Then, The analytical and experimental results been compared. The results show a good agreement for...

Drawing is an activity that requires visual, emotional, and movement skills. This study compares, for the first time, children's brain during drawing on paper versus a tablet. First, we examined in 26 right-handed children using EEG combined with Event-Related Desynchronization (ERD) Synchronization (ERS) methods. Then, asked participants to copy house model where used Neurosoft system record d...

We present a feature-guided salient rendering a 3D triangular mesh. For this, we compute directions on the vertices of the mesh and distribute noise on the faces of the mesh. After projecting the direction and noise into image space, we execute a convolution algorithm to render the mesh. We use three directions in this paper: a principal direction, the tangent direction of an isocurve of view-d...