A recent example of successful technology transition from high energy physics to practical engineering applications is cosmic ray muon tomography. Cosmic tomography, a promising non-destructive technique that has been recently utilized monitor or image the contents dense well shielded objects, typically not feasible with conventional radiography techniques, e.g., x-ray neutron. tomography used ...

The hexagonal bipyramid fractal is a fractal in three dimensional space, which has fractal dimension two and which has six square projections. We consider its 2nd level approximation model, which is composed of 81 hexagonal bipyramid pieces. When this object is looked at from each of the 12 directions with square appearances, the pieces form a 9× 9 grid of squares which is just the grid of the ...

Noise generators are used to measure noise figure in receivers, to test system health in built-in test (BIT) circuits, in jamming, and in testing digital data transmission systems bit error rate (BER). Combining a noise generator with an antenna creates a noise radiator [1]. Such a noise radiator generates a random (non-coherent) noise field in which near-field interference is not observed. A n...

Using hexagonal grids to represent digital images have been studied for more than 40 years. Increased processing capabilities of graphic devices and recent improvements in CCD technology have made hexagonal sampling attractive for practical applications and brought new interests on this topic. The hexagonal structure is considered to be preferable to the rectangular structure due to its higher ...