Watch the maiden flight of the PBY Catalina RC model, where nearly three crashes test its stability and handling. See how ...

Investors may trade in the Pre-Market (4:00-9:30 a.m. ET) and the After Hours Market (4:00-8:00 p.m. ET). Participation from Market Makers and ECNs is strictly voluntary and as a result, these ...

Petróleo Brasileiro SA engages in oil and gas exploration, production, and distribution activities. It operates through the following segments: Exploration and Production; Refining, Transportation, ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Computational models are mathematical models that are simulated using computation to study complex systems. In biology, one example is the use of a computational model to study an outbreak of an ...

Network models are a computer architecture, implementable in either hardware or software, meant to simulate biological populations of interconnected neurons. These models, also known as perceptrons or ...

The riverboat captain is a storyteller. Captain Don Sanders shares the stories of his long association with the river — from ...

Petróleo Brasileiro SA engages in oil and gas exploration, production, and distribution activities. It operates through the following segments: Exploration and Production; Refining, Transportation, ...

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