Endurance time (ET) method is a relatively new performance-based earthquake method for structural evaluation and design. In this method, the structure is subjected to a gradually intensifying accelorogram(s) and its performance is assessed based on the maximum time duration that it can meet the specified performance objectives. Using moment-resisting and braced frames which are rehabilitated by...

Resonant photonic nanostructures exhibiting enhanced nonlinear response and efficient frequency conversion are an emergent platform in optics. High-index semiconductor metasurfaces with rapidly tuned high-quality-factor (high-Q) resonances enable a novel class of time-variant metasurfaces, which expands the toolbox color management at nanoscale. Here, we report on dynamic control optical suppor...

In the present work we propose a nonlinear anti- PT -symmetric dimer, that at linear level has been experimentally created in realm of electric circuit resonators. We find four families solutions, so-called upper and lower branches, both symmetr...