Abstract: Since the mid-1990s, State-Dependent Riccati Equation (SDRE) strategies have gained prominence as systematic and effective methodologies for designing nonlinear controllers, observers, and ...

As Russia rebuffs President Trump’s diplomatic push, President Volodymyr Zelensky of Ukraine plans to head again to the White House, this time seeking missiles. By Constant Méheut Reporting from Kyiv, ...

For now, college football rankings are relying on the AP poll. In just a few weeks, the College Football Playoff rankings will take over, eventually giving us the 12-team field in December. But the ...

Jamie Q. Roberts does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

For decades, America’s voter roll maintenance system has been running on fumes. It still relies on tools like the Postal Service’s National Change of Address database and the Social Security Death ...

This year’s bear season, ranging from spring to late fall, has been “crazy” and “incredible,” said Bryan Peterson, director of Bear Smart Durango. The season isn’t over yet, and so it’s unclear how ...