Indoor or outdoor use Geometric checkerboard design Weatherproof, durable and easy to clean Perfect for high-traffic areas and family-friendly spaces Add practical style and modern texture with the ...

Abstract: We address the problem of camera-to-laserscanner calibration using a checkerboard and multiple imagelaser scan pairs. Distinguishing which laser points measure the checkerboard and which lie ...

Abstract: Most existing steady-state visual evoked potential (SSVEP)-based brain-computer interfaces (BCIs) adopted low- or medium-frequency stimuli towards high information transfer rates (ITRs).

1894 • William H. Danforth and two partners create the Robinson-Danforth Commission Co. in St. Louis to mill and sell animal feed. Danforth dies in 1955 at age 85. Former U.S. Senator John C. Danforth ...