John Morgan, Visiting Scientist, University of California, Berkeley. "Atomic 

 and Molecular Theory," with Alexander Dalgarno, from October 1, 1989 to 

 August 31, 1991. 



Rachel Padman, Visiting Scientist, St. John's College, Cambridge. "Development 

 of Optical Considerations for the Submillimeter Antennas," with Colin 

 Masson, from January 15 to April 15, 1990. 



Monica Pasca, Visiting Student, University of Rome. "The Investigation of 

 Non-Linear Oscillations of Tethered Systems, Stability of Motion 

 Following Large Disturbances, and Modal Resonances with External 

 Perturbations," with Enrico Lorenzini, from January 15 to July 15, 1990. 



Tsvi Piran, Visiting Scientist, Hebrew University. "Initial Conditions for 

 Inlation and the Very Early Universe; Evolution of Strings Network; 

 Numerical Relativity; and Relativistic Astrophysics," with George Field, 

 from September 1, 1990 to August 31, 1991. 



Michael Punch, Visiting Scientist, University College, Dublin. "Observation 

 of the 10M Reflector and Design of a Semi-Automated Telescope," with 

 Trevor Weekes, from December 27, 1989 to February 9, 1990. 



Massimo Ramella, Visiting Scientist, Trieste University. "Analysis of Groups 

 of Galaxies," with Margaret Geller, from March 1 to August 31, 1990. 



Paola Rossi, Predoctoral Fellow, Universita' di Torino. "The Structure and 



Stability of Magnetic Flux Tubes in the Solar Atmosphere," with Wolfgang 

 Kalkofen, from October 1, 1989 to September 30, 1991. 



Timothy Scholz, Postdoctoral Fellow, Queen's University, Ireland. "Various 

 Aspects of Electron Scattering by Atomic Targets," with A. Dalgarno, 

 .from August 27, 1990 through August 26, 1991. 



Wei Shen, Visiting Scientist, Beijing University, China. "The Properties of 

 the Atomic Hydrogen Maser, " with Robert F. C. Vessot, from December 1, 

 1989 to May 14, 1990. 



Janine Shertzer, Visiting Scientist, Brown University. "The Binding Energy of 

 the Muonic Molecular Ions: Application of the Finite Method of 

 Calculation," with Alexander Dalgarno, from June 1, 1990 to May 31, 

 1991. 



Kazuo Shibasaki, Visiting Scientist, University of Tokyo. "Spectroscopic 

 Measurements of Chemicals in the Earth's Ozone Layer," with Kelly 

 Chance, from April 1, 1990 to March 31, 1991. 



Alok Shukla, Visiting Student, University of Washington. "Theory of Electric 

 Dipole Moment of Atomic Rubidium Due to Parity and Time Reversal 

 Violation," with Alexander Dalgarno, from June 15 to September 15, 1990. 



Aneta Siemiginowska, Predoctoral Fellow, Warsaw University. "Accretion Disks 

 in Active Galactic Nuclei," with Martin Elvis, from August 1, 1990 to 

 July 31, 1991. 



Kulinder Pal Singh, International Exchange Visitor, Bombay University. "X-Ray 

 Spectroscopy of Supernova Remnants," with John Hughes, from April 30 to 

 September 30, 1990. 



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