Abstract: This study addresses the problem of estimating the velocity and displacement of building structures. Initially, the dynamics of a building subject to seismic disturbance are represented ...

Abstract: With the power requirement increasing dramatically, the power grid scale of China continuous expanding recently. The power grid scale should keep an appropriate adequacy to avoid power ...

Every material object that exists is overlaid with a mysterious backdrop of cosmic mathematics, which governs its changing shapes and evolutionary stories. Petals of a flower, the jelly-like cells ...

Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...