Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...
A number machine is a way of writing rules using a flow diagram. The equation \(3j - 6 = 9\) can be shown on a number machine by writing out the functions that have been applied to \(j\) in the order ...
Abstract: The influence of electron–electron collisions on the formation of inverse electron distribution function (EDF) and absolute negative conductivity (ANC) in nonlocal plasma of a direct current ...
Researchers from Harvard’s Department of Human Evolutionary Biology found that educated children perform better on psychological tests measuring executive function abilities, challenging the accuracy ...
Natural selection uses duplicated genes as raw material for functional innovation, co-opting their existing features to new functions. Understanding genetic innovation requires two questions to be ...
It’s called mental inversion, and here’s how it works. Thinking forward is an automatic process. Cause, then effect. Input, then output. A to B. It feels logical—and normal to start with a conclusion, ...
Calcium is a nutrient that all living organisms, including humans, need. Dietary sources of calcium include dairy products, green leafy vegetables, nuts, seeds, and fortified products. Calcium is the ...
Your brain is constantly at work, performing processes like thinking, concentrating, remembering, and more. During these activities, your brain cells constantly communicate with each other. This ...
Abstract: For inverse synthetic aperture radar (ISAR) imaging of a maneuvering target, the Doppler frequency shift for the received signal in a range bin is time varying. In this letter, the received ...
Trigonometric Functions and Complex Numbers covers the followings areas in the International Mathematical Olympiad (IMO) and other mathematical competitions. Trigonometric identity, graphs and ...
Addressed mainly to physicist and chemical physicist, this textbook is the result of a broad compilation of current knowledge on analytical properties of Airy functions. In particular, the calculus ...
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