Edward C. Molina

Edward Charles Dixon Molina (December 13, 1877 - April 19, 1964) was an American engineer, known for his contributions to teletraffic engineering.

Biography

He was born on December 13, 1877.

He was self-taught in mathematics and entered the AT&T research department (later Bell Labs) in 1901. His invention of relay translators in 1906^[1] resulted in the panel dial systems. Molina pioneered the use of throwdowns, which in essence were Monte Carlo simulations of telephone traffic to find optimal capacity assignments for trunk lines to central offices.^[2] He was awarded the Franklin Institute's Elliott Cresson Medal in 1952.

He died on April 19, 1964.

Publications

• "Application of the Theory of Probability to Telephone Trunking", Bell Labs Technical Journal, No 6, pp. 461–495, 1927
• "Bayes' Theorem: An Expository Presentation", Annals of Mathematical Statistics, 2(1):23-37, 1931
• An expansion for Laplacian integrals in terms of incomplete gamma functions, and some applications (1932)
• Poisson's exponential Binominal limit (D. Van Nostrand, Co.Inc., 1943).
• "Some Fundamental Curves for the Solution of Sampling Problems", Annals of Mathematical Statistics, 17(3):325-335, 1946
• "Some antecedents of quality control", in Quality Engineering journal 10(4):693-695, 1998. (Notes for a talk given January 17, 1950.)

References

1. U.S. Patent 1,083,456
2. Bernard D. Holbrook and W. Stanley Brown, A History of Computing Research at Bell Laboratories (1937-1975)