Aknin, Lara B., Elizabeth W. Dunn, and Michael I. Norton. "Happiness Runs in a Circular Motion: Evidence for a Positive Feedback Loop between Prosocial Spending and Happiness." Journal of Happiness ...

Reinforcing loops, also known as positive feedback loops, amplify changes within a system ... or viral marketing but can be detrimental in situations like the spread of disease or panic. Balancing ...

Allowing for 45⁰C of phase margin in a design will protect it from large shifts due to large component tolerances in manufacturing.