Ya. B. Zel'dovich

Was what ail'd ya what kill'd ya?

Making use of those Union Army veterans for whom death certificates are available, we compare the conditions with which they were diagnosed by Civil War pension surgeons to the causes of death on the certificates. We divide the data between those veterans who entered the pension system early because of war injuries and those who entered the pension system after the 1890 reform that made it avai...

‘ ‘ Foiling the Cracker ’ ’ : yA

c Unix. When Unix was younger, the password encryption algorithm was a simulation of the M-209 ipher machine used by the U.S. Army during World War II [Morris1979]. This was a fair encryption s t mechanism in that it was difficult to invert under the proper circumstances, but suffered in that it wa oo fast an algorithm. On a PDP-11/70, each encryption took approximately 1.25ms, so that it was p...

The heterogeneous Zeldovich factor

Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Printer-friendly Version Interactive Discussion EGU Abstract In this technical note we present the exact form of the Zeldovich factor for heterogeneous nucleation on spherical pre-existing particles. We study the error caused by planar pre-existing surface approximations, which have been used in our earlier heteroge...

Professor Ya-Ling Han

Figure 1. Professor Ya-Ling Han Professor Ya-Ling Han (Figure 1), a famous cardiologist in China, was born in Wuhan, Hubei province, in 1953. She graduated from Harbin Medical University in 1978. After getting her doctorate in 1994 from Shanghai Second Military Medical University, professor Han worked as the director and professor of the Department of Cardiology. She then worked as the vice pre...

Sunyaev–Zeldovich Effect