منابع مشابه
Forty Years of X-Ray Binaries
In 2012 it was forty years ago that the discovery of the first X-ray binary Centaurus X-3 became known. That same year it was discovered that apart from the High-Mass X-ray Binaries (HMXBs) there are also Low-Mass X-ray Binaries (LMXBs), and that Cygnus X-1 is most probably a black hole. By 1975 also the new class of Be/X-ray binaries was discovered. After this it took 28 years before ESAs INTE...
متن کاملForty years in cardiology.
ELECTION to this lectureship has brought me an honour which I rank highly, in that I am aware of the acknowledged distinction of my predecessors and which laid claim to their appointment to this office. The invitation has also placed upon my shoulders a heavy responsibility, namely to discharge my duty as creditably as they did, and has planted in me a fear lest I fail to do so. I mean, however...
متن کاملForty years on.
FORTY YEARS AGO, this month, I started in practice, I confess without the benefit of vocational training; that came two months later when my chief had his first coronary. I was extremely fortunate in becoming assistant, and later partner, to John Taggart of the Antrim Road, one of the most distinguished practitioners of his day. Taggart was a County Antrim man, with all the bluntness and sagaci...
متن کاملForty Years of Perceptrons
More than forty years have passed since a learning machine called the perceptron was proposed by Rosenblatt. It has played a major role for these forty years, not only in the area of computational neuroscience in elucidating the function of cerebellum, but also in theoretical and practical studies of learning machines. The present talk reviews these developments from my personal point
متن کاملHamilton's forces of natural selection after forty years.
In 1966, William D. Hamilton published a landmark paper in evolutionary biology: "The Moulding of Senescence by Natural Selection." It is now apparent that this article is as important as his better-known 1964 articles on kin selection. Not only did the 1966 article explain aging, it also supplied the basic scaling forces for natural selection over the entire life history. Like the Lorentz tran...
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ژورنال
عنوان ژورنال: Chemical & Engineering News Archive
سال: 1984
ISSN: 0009-2347,2157-4936
DOI: 10.1021/cen-v062n023.p003