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Frances Brunelle
Just as baby boomers on the manufacturing plant floor are getting ready to retire, so are the owners. More than 5,000 small manufacturing operations (with annual revenues between $2 and $20 million)...
    In the past two months we have looked at how three-sigma limits work with skewed data. This column finds the power functions for the probability limits of phase two charts with skewed probability models, and compares the trade-offs made by three-sigma limits with the trade-offs made by the...
    You’ve set aside Sunday afternoon to bake some cookies, but you discover you have run out of eggs. Your partner in marital bliss has gone out and taken the car. You call a couple of mates, and they tell you to try bananas, vegetable oil, or applesauce as egg substitutes. You decide to have some fun...
    Today I’m looking at design from a cybernetics viewpoint. My inspirations come from cybernetics and design theorists Ross Ashby, Stafford Beer, Klaus Krippendorff, Paul Pangaro, and Ranulph Glanville. I was curious about how the interface of a device conveys the message to the user on how to...
    One of my favorite equations from Factory Physics, by Wallace Hopp and Mark Spearman (Waveland Press, third edition, 2011) is Kingman’s formula, usually represented as “VUT.” The VUT equation is named after Sir John Kingman, a British mathematician: The first factor represents variability...

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