Accurate estimation of the ionosphere is essential for reliable Global Navigation Satellite System (GNSS) positioning, timing, and space weather applications. A key challenge lies in converting slant ...

Probability-based panel: This refers to a national survey panel recruited using random sampling from a database that includes most people in the population. Today, most such panels in the United ...

WASHINGTON (Reuters) - The State Department on Friday corrected several errors it made in a key study evaluating the impact of the proposed Keystone XL pipeline, including a understatement of how many ...

Discover the essential construction calculators every contractor should use in 2026 to improve project accuracy, save time, ...