I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

New research shows polar bear encounters often increase due to longer ice-free seasons, not widespread starvation, reshaping ...

Description: In this video series you will learn multiple math operations. I teach in front of a live classroom showing my students how to solve math problems step by step. My math tutorials should be ...

Folks across the central, eastern and southern U.S. are about to experience potentially record warmth over the next week or so.

This is one of a series of interviews in which Kim Hoo-ran, editor-at-large at The Korea Herald, speaks with leaders, trailblazers, unsung heroes, and both well ...

Abstract: In this letter, a polar-coordinate-multi-signal-flux-observer (PCMFO) is proposed for permanent magnet synchronous motor (PMSM) sensorless control. PCMFO is constructed in polar coordinates ...

Humans are social by design. Rising isolation from remote life clashes with our biology, weakening health and community in ways solitary species do not face.

Abstract: A novel 2-D composite right/left-handed transmission line (CRLH-TL) metamaterial in polar coordinates is proposed for the first time, and applied to a multistandard antenna. The prototype ...