M. J. Burbidge

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system the time constant of which is mainly related to the dumping resistance of the RLC series branch in the equivalent circuit. A second pole is introduced by the rectifier [6], so the whole system could be approximated by a two pole transfer function. Note that the PWM modulator moves the negative slope edge of the input voltage signal changing the duty(More)
This paper describes motivations for the further development of an existing remote access facility for use in teaching and learning of microelectronic circuit design and test principles. Initial development was based upon adaptation of "at presence" material for use with an existing remote access laboratory based upon a standard internet link. The selected(More)
Forty years ago Burbidge, Burbidge, Fowler, and Hoyle combined what we would now call fragmentary evidence from nuclear physics, stellar evolution and the abundances of elements and isotopes in the solar system as well as a few stars into a synthesis of remarkable ingenuity. Their review provided a foundation for forty years of research in all of the(More)
We have examined each group of annual Nobel Prize winners since 1979. Beginning with the 1982 awards, I we included data from the research fronts we identify each year for Science Citation Index” (SCP’ ). Briefly, a research front is a group of current papers that cite a cluster of “core” papers identified by co-citation clustering. These procedures have(More)
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