John Summa is the founder of OptionsNerd.com and has authored a number of books. He has 6+ years as a chief economist and derivatives strategist. Timothy Li is a consultant, accountant, and finance ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has a demonstrated ...

Robert Burakoff, MD, MPH, is a board-certified gastroenterologist who serves as vice chair of Ambulatory Services at Lower Manhattan Hospital and professor of medicine at the Weill Cornell Medical ...

It's never too early for our analysts to stack their 2026 NFL draft boards. How do the top players at every position rank against each other? We pulled together top-fives at every single position from ...

Sleeping on the left side can help align the spine and reduce acid reflux. Back sleeping keeps the spine aligned but may worsen sleep apnea and snoring. Right-sided sleeping may improve heart health ...

Abstract: A novel initial position detecting strategy of sensorless control for the surface-mounted permanent magnet synchronous motor is proposed, the scheme combines the virtual high frequency (HF) ...

Abstract: This article describes the basic optical principles in the lithographic tool, with the resulting positioning accuracy requirements. For three generations of lithographic tools, the ...

Check and improve your grammar with our intermediate grammar reference guide. On this page you'll find links to our intermediate grammar summary pages. Each intermediate grammar reference page covers ...