Abstract: This article derives a new explicit expression of current of a double-diode model (DDM) photovoltaic (PV) module from the implicit current-voltage (I-V) expression. Here, the exponential ...

Learn the importance of ESG and how you can invest in it Barbara Friedberg is a veteran investment portfolio manager, fintech consultant, and expert investor. She is a published author of several ...

As of December 2025, there is no approved fourth federal stimulus check. Former President Donald Trump has proposed a new round of payments, but this has not been approved by Congress. Arizona has ...

As the number of EVs on the secondhand market increases - along with the age - battery condition has become a key factor for buyers. But gaining access to that information is not as straightforward as ...

Check your blood sugar first thing in the morning after eight or more hours without food. Testing after meals shows how your body handles the food you've eaten. Check before and after exercise to see ...

Your portfolio might not be as diversified as you think. The US market has been dominated by a group of mega-cap tech stocks known as the Magnificent Seven. These giants have delivered strong returns, ...