| Leonard Kleinrock |
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Leonard Kleinrock, Ph.D. (born 1934 ) is a Computer Scientist , and a professor of computer science at UCLA , who made several extremely important contributions to the field of Computer Networking , in particular to the theoretical side of computer networking. He also played an important role in the development of the ARPANET at UCLA. His most well-known and significant work is his early work on Queueing Theory , which has applications in many fields, among them as a key mathematical background to Packet Switching , the basic technology behind the Internet . His initial contribution to this field was his doctoral thesis in 1962 , published in book form in 1964 ; he later published several of the standard works on the subject. He has described this work as: : "Basically, what I did for my PhD research in 1961–1962 was to establish a mathematical theory of packet networks ..." His theoretical work on Hierarchical Routing , done in the late 1970s with his then-student Farouk Kamoun , is now critical to the operation of today's world-wide Internet. ARPANET and internet In 1969 , ARPANET , the world's first electronic computer network, was established on October 29 between nodes at Kleinrock's lab at UCLA and Douglas Engelbart 's lab at SRI . Interface Message Processors at both sites served as the Backbone of the first Internet {Link without Title} . In addition to SRI and UCLA, UCSB , and the University Of Utah were part of the original four network nodes. By December 5 , 1969 , the entire 4-node network was connected. In 1988, Kleinrock chaired a group which presented the report ''Toward a National Research Network'' to congress {Link without Title} . This report was highly influential upon then-Senator , which was funded by the ''High-Performance Computing and Communications Initiative'', a program created by the ''High Performance Computing Act of 1991''. EDUCATION AND CAREER He graduated from the legendary Bronx High School Of Science in 1951 , and received a B.E.E. in 1957 from the City College Of New York , and an S.M. and a Ph.D. in EECS from MIT in 1959 and 1963 respectively. He then joined the faculty at UCLA, where he remains to the present day; during 1991-1995 he served as the Chairman of the Computer Science Department there. He has received numerous professional awards. SEE ALSO FURTHER READING
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