Installing stone columns in the ground is an effective improvement technique to increase the load bearing capacity and reduce the consolidation settlement of the loose or weak cohesive soils. In addition to the increase in the bearing capacity and reduction in the settlement, stone columns can accelerate the dissipation rate of the excess pore water pressure generated by the surcharge, which ex...

Ground-layer adaptive optics (GLAO) promises a significant improvement in image width and energy concentration over atmospheric seeing in a relatively wide field by compensating for low-altitude turbulence only. This approach, which is intermediate between full AO and seeing-limited observations, can benefit many astronomical programs in the visible and near-infrared. We have developed a simple...