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Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in ...

Abstract: Due to the advantage of flexible and rapid deployment, unmanned aerial vehicle (UAV)-based synthetic aperture radar (SAR) tomography (TomoSAR) is a promising technology in 3-D urban mapping.

Sinn Féin’s US fundraising and lobbying arm recorded $57,700 (€50,000) in income in the six months to October, including a further $18,804 donated from a trust set up by an Arizona woman who died in ...

The S&P 500 index includes around 500 companies. Here's what qualifies a company and who's on the list. Many, or all, of the products featured on this page are from our advertising partners who ...