The bending point of steel chains for mining is the center of stress, at which the shoulder fracture always occurs.

"The academic standards are getting higher and higher," says Jane Morgan Bost, associate director of the University of Texas Counseling and Mental Health Center. "the financial stress is very high."

The IBM Linux Technology Center Test department uses this stress test, along with other tools and tests, as a relatively quick and easy way to help validate the stability of Linux kernel releases.