The need to design blast resistant civilian structures has arisen due to aggressor attacks on many civilian structures around the world. Achieving vibration and wave attenuation with locally resonant metamaterials has attracted a great deal of consideration due to their frequency dependent negative effective mass density. In this paper, metaconcrete, a new material with exceptional properties i...

Is productivity growth inimical to employment? Canonical economic theory says no, but much recent economic theory says ‘maybe’ — that is, rapid advances in machine capabilities may curtail aggregate labor demand as technology increasingly encroaches on human job tasks. We explore the relationship between productivity growth and employment using countryand industry-level data for 19 countries ov...