Quality Control
A study of the visual inspection of small integrated circuits found that the modal duration of eye fixations of trained inspectors was about 200 msec. The most accurate inspectors made the fewest eye fixations and were the fastest. When the same chip was judged more than once by an individual inspector the consistency of judgment was very high whereas the consistency between inspectors was somewhat less. Variation by a factor of six in inspection speed led to variation of less than a factor of two in inspection accuracy. Visual inspection had a false positive rate of 2% and a false negative rate of 23%
Read more about this topic: Visual Inspection
Famous quotes containing the words quality and/or control:
“Wit is so shining a quality that everybody admires it; most people aim at it, all people fear it, and few love it unless in themselves. A man must have a good share of wit himself to endure a great share of it in another.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“Above and beyond paying attention to feelings before and after a separation, never threaten your child with leaving or loss of love in an effort to control her behavior. Children believe their parents’ assertions that “I will send you away,” “I won’t love you any more,” “I’ll go away,” and are terrified with good reason. Fear is a very poor way of disciplining a child, and it can cause severe lifelong anxiety.”
—Alicia F. Lieberman (20th century)