Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Khadija Khartit is a strategy, investment, ...

Abstract: Natural fractures play a crucial role in shale reservoir characterization. While vertical fractures can be estimated using amplitude variation with azimuth (AVAz) inversion methods, ...

Abstract: The calculation of magnetically induced vibrations in the stator of an electric machine involves, on the one hand, the determination of the magnetic forces originating from the air gap field ...

Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has a demonstrated history of working in both institutional and retail environments, from broker-dealers to ...

Greenpeace activists stage protest outside Shell HQ contrasting extreme weather damage costs to oil giant’s profits - photographs available here Shell's 2025 annual profits statement of £13.6 billion ...