Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

At the simplest point, the job of the fire department is primarily suppression. Yes, collectively, we provide a multitude of services, but suppression is the foundation of most departments’ mission.

In March 2019, an anonymous individual by the pseudonym “PlanB” astonished investors when he published “Modeling Bitcoin Value with Scarcity,” and introduced his now famous Stock-to-Flow (S2F) model.

State and federal officials have decided to curtail additional water flows intended to support endangered fish in the Sacramento-San Joaquin River Delta this fall — a controversial step that is being ...