Why measurements do (not) work: the human factor

Why do color transforms work?

Numerous papers have been written regarding techniques to translate color measurements from an RGB device (such as a scanner or camera) into some standard color space. The papers seem to ignore the mathematical "truth"... that the translation is impossible. Do these color transforms work, or under what conditions do they work, and what are the limitations? Why is it that they work (if they do)?...

Why UML will not do ?

Why the usual candidates of reducibility do not work for the symmetric λμ-calculus

The symmetric λμ-calculus is the λμ-calculus introduced by Parigot in which the reduction rule μ, which is the symmetric of μ, is added. We give examples explaining why the technique using the usual candidates of reducibility does not work. We also prove a standardization theorem for this calculus.

Why do people retire from work early?

This article examines the validity of a mortality study of early retirees by Dr. Eric Kingson. The Kingson study supports the hypothesis that men who retired early were very prone to have work-limiting conditions even though they were not awarded Disability Insurance benefits. This article maintains that Kingson's study is analytically faulty because of the procedure used to categorize the samp...

Why do boomers plan to work longer?

OBJECTIVE . Recent changes in retirement trends and patterns have raised questions about the likely retirement behavior of baby boomers, the large cohort born between 1946 and 1964. This study examined recent changes in retirement expectations and the factors that drove them. METHODS Using data from the Health and Retirement Study, the analysis compared self-reported probabilities of working ...