Propagation in perturbed one-dimensional phononic or photonic crystals, with both compositional and positional disorder, is considered. The coherent potential approximation is used to obtain the band structure and the Floquet normal form of the periodic-on-average perturbed crystal, which is...

Corporations are increasingly viewed as key actors in poverty alleviation. “Bottom of the Pyramid” (BoP) advocates suggest that MultiNational Corporations (MNCs) can simultaneously alleviate poverty and make profits by selling scaled-down products to the poor. Our paper investigates this...