Ripples spreading across a calm lake after raindrops fall—and the way ripples from different drops overlap and travel outward ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their results match “local” measurements but clash with early-universe estimates, ...

If you’ve layered audiences into your Google Ads campaign and weren’t sure if you should select “targeting” or “observation,” you’re not alone. While the Google and Microsoft platforms give decent ...

There is high uncertainty in the direct radiative forcing of black carbon (BC), an aerosol that strongly absorbs solar radiation. The observation-constrained estimate, which is several times larger ...

Data assimilation has been developed into an effective technology that can utilize a large number of multi-source unconventional data. It cannot only provide the initial field for the ocean numerical ...

Abstract: The observation error model of the underwater acoustic positioning system is an important factor to influence the positioning accuracy of the underwater ...

Hamiltonian simulation is one of the most promising applications of quantum computers, and the product formula is one of the most important methods for this purpose. Previous related work has mainly ...

Abstract: Most of the existing estimation methods for nonlinear systems have been developed by using non-self-error data (e.g., prediction error and observation error ...

We discuss 12 misperceptions, misstatements, or mistakes concerning the use of covariates in observational or nonrandomized research. Additionally, we offer advice to help investigators, editors, ...