Temporal variability of lunar exospheric helium during January 2012 from LRO/LAMP

Dr. Nasser Maleki (January 25, 1953 – January 6, 2012)

An analytic function of lunar surface temperature for exospheric modeling

a Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA Goddard Planetary Heliophysics Institute, University of Maryland Baltimore County, 21228, USA c Southwest Research Institute, San Antonio, TX 78228, USA University of California, Los Angeles, CA 90095, USA e Jet Propulsion Laboratory, Pasadena, CA 91109, USA Heliophysics Science Division, NASA Goddard Space Flight Cent...

10 January 2012

In the early 1960s, Anthony Edwards and Luca Cavalli-Sforza made an effort to apply R.A. Fisher’s maximum likelihood (ML) method to estimate genealogical trees of human populations using gene frequency data. They used the Yule branching process to describe the probabilities of the trees and branching times and the Brownian motion process to model the drift of gene frequencies (after a suitable ...

Contents Digest January 2012

Welding Journal - January 2012

For more than 30 years, body-in-white development has been dominated by the need to achieve weight reduction while improving crash worthiness (Refs. 1, 2). Weight reduction is considered a primary key to improvements in fuel economy. One area of considerable development has been through materials substitution. Thirty years ago, automotive structural elements were made almost exclusively from re...