Optical parametric oscillators simultaneously generate two beams of coherent light that are widely tunable in wavelength. This flexibility makes them a popular tool in various areas of scientific ...

President Donald Trump’s approval rating ticked up slightly in two weekly polls and was down half a point in a third as the government shutdown stretches into a fourth week with no clear path to ...

Partly built starting in 1145, and then reconstructed over a 26-year period after the fire of 1194, Chartres Cathedral marks the high point of French Gothic art. The vast nave, in pure ogival style, ...

Abstract: This letter introduces a robust Model Predictive Control approach in which a shrinking prediction horizon and a system input parameterization are exploited to control a linear system with ...

Past performance is not indicative of future results. The above frequency distribution chart presents information about the difference between the daily market price for shares of the Fund and the ...