Conditioning on the observed data is an important and flexible design principle for statistical test procedures. Although generally applicable, permutation tests currently in use are limited to the treatment of special cases, such as contingency tables or K-sample problems. A new theoretical framework for permutation tests opens up the way to a unified and generalized view. We argue that the tr...

Seismic liquefaction affects badly the safety of underground structures. For dynamic responses tunnel in liquefied watered sandy stratum one rail transit projects Shanghai, this paper proposes a tunnel-foundation shaking table model test and analyses electrolytic desaturation technology on surrounding soil, which provides some theoretical guidance for seismic designs Shanghai projects. The resu...

The tunnels located in the shallow depths of loose saturated sand are significantly prone to liquefaction-induced uplift. Research works are, therefore, progress propose efficient techniques for mitigating In this study, 1 g physical modeling was used assess performance helical piles decreasing effects pile length, number helixes, and spacing plan view were investigated. uplift mechanism tunnel...