3/1993 - 11/1995 Computer Specialist

• Design and development of computer systems for the Submillimeter Array Telescopes(15,000 lines of 'C' code) and correlator(10,000 lines of 'C' code, 2,000 lines of Assembly code, ~200 lines of 'C++'.

  Developed software and selected hardware that would be used in monitor and control of the Submillimeter Array(SMA) interferometer. Along with my duties as a software engineer and developer I was involved in making purchases for the group(ordering Workstations(WS), and other Central Processing Units (CPU) needed for VME hardware controllers and other hardware). My duties also involved designing and writing code for the TMS320C40 DSP chips which are part of the correlator board designed for real-time(RT) data collection. Other computers, software packages, and hardware were evaluated as to there use in the overall SMA interferometer project.

  I also managed three(3) Sparc Workstations(two(2) Sparc10, one(1) IPX(with a uPower chip which I installed for better preformance), two(2) printers, two(2) DAT drives, one(1) CD-ROM, two(2) PC's, three(3) Motorola 680x0 boards.

• 15 percent of time as a Solar Scientist for statistical and theoretical analysis of solar radio data in collaboration with colleges from the Center for Astrophysics(2000 lines of FORTRAN).

Smithsonian Astrophysical Observatory(SAO)

Harvard-Smithsonian Center for Astrophysics(CfA)

Cambridge,Mass

Apr. 1989 and May 1991

• Appointed Visiting Scientist to Harvard-Smithsonian Center for Astrophysics for statistical and theoretical analysis of solar radio data.

Harvard-Smithsonian Center for Astrophysics(CfA)

Cambridge,Mass.

1/1993-3/1993 Scientific Programming Analyst

• Improve on control performence of Very Large Baseline Array(VLBA) Correlator (10,000 lines of 'C' and SQL).

National Radio Astronomy Observatory(NRAO)

Very Large Baseline Array(VLBA)

Socorro,NM

Associated Universities, Inc.

1989-1993 Senior Scientific Programmer

• Designed and wrote Playback Interface for the Very Large Baseline Array(VLBA) Correlator(40,000 lines of 'C' and SQL).
  • -Used in monitor and control of 20 playback tape drives. Wrote control software for Very Large Baseline Array(VLBA)Correlator.
  • -Designed and wrote software for screens, monitor data, collection, error checking ... etc.

National Radio Astronomy Observatory(NRAO)

Very Large Baseline Array(VLBA)

Charlottesville,VA

Associated Universities, Inc.

1983-1989 Senior Scientific Programmer

1981-1983 Scientific Programmer

• Designed and wrote Array Operations Interface(AOI)(~42,000 lines of FORTRAN code, and 10,000 of Assembly code, ~30 MACRO's).
  • -Used in monitor and control of 27 antenna interferometer for Observational projects and the Voyager-Neptune flyby.

• Designed and wrote solar observing program SUNMAKE(~20,000 lined of FORTRAN).
  • -Used in creating observing programs for solar observations.

National Radio Astronomy Observatory(NRAO)

Very Large Array(VLA)

Socorro,NM

Associated Universities, Inc.

Converted scientific, engineering and other technical problems and formulations to formats processible by computers. Resolved symbolic formulations, prepared logic flow charts, block diagrams, and encoded resolved equations for processes. Worked on hardware and software interactions in Real Time systems(RTS).

Created and worked on existing user interfaces for monitor and control for hardware in a Real Time Environment(RTE). I conferred with personnel to resolve problems of intent, inaccuracy, feasibility, or computer processes. Review results of radio data with interested personnel. Developed new designs and analysis of software and hardware interactions still in use today.

I developed software to control one of the most critical, and arduous part of the VLBA(Very Long Baseline Array) correlator system, the 24 (one inch) Playback tape Drives(PBD). The 24 PBDs are connected to the 24 signal processing engines via a crossbar. The extra 4 PBDs enable tape staging; in full operation the average interval between tape changes are about 1/2 hour. A task was used to coordinate and synchronize crossbar reconfigurations; the design is intended to enable a tape task to switch from one PBD to the other without stopping and restarting. The operator were given windows and a various other ways of monitoring the progress. Some software was developed to manage the large amounts of data coming from the tape(PBDs) drives. Many of the software and hardware purchases were recommended by me for this project(VLBA correlator project). I continued to develop other packages after discussions with the engineering, and scientific staff.

Other projects were the Voyager-Neptune flyby, where many discussion sometimes lead by me and sometimes by others as to how the VLA(Very Large Array) in Socorro would be used in the project. I worked closely with NASA/Jet Propulsion Laboratory(JPL) operations staff to develop procedures and knowledge for efficient VLA/JPL operations and rapid diagnosis and correction of VLA failures. Working with others I enhanced reliability and minimized down time at the VLA and VLBA.

I worked with many operating systems which are mentioned on the cover, and had to meet many deadlines of which were imposed by me or management.

I also had to install and work with Data Base Systems(DBS) such as Ingres, and other DBSs. Worked extensively with AIPS in data reduction and analysis for calibration of the VLA and other instruments, as well as acquiring observations and using AIPS analysis package to study the spatial and temporal characteristics of macrospicules found on the solar surface. I also was and still involved in long term coordianted observations with other observatories to determine solar wind parameters, such as density, temperature, flow speeds and magnetic field strength, along a given solar stream.

1980-1981 Array Operator

• Designed and wrote INFORM, used for review of observational data quality(2,000 lines of SAIL code, JCL and DCL commands and 200 line of BASIC for PC).

• Data Analyst for remote observers, reduced and calibrated astronomical data.

• Designed and wrote functions for better operations of 27 antenna interferometer.

• Handled Multi-Observing projects for radio astronomers.

National Radio Astronomy Observatory(NRAO)

Very Large Array(VLA)

Socorro,NM

Associated Universities, Inc.

1978-1980 Mathematician

• Expansion of elliptic integrals of the third kind.

  Mainly to work and solve many of the known functions to be published in a text book "Elliptic Integrals of the third kind" by David Giri.

Science Applications

Berkeley, CA

1975-1978 Mathematical Aide

• Electromagnetic Field Distribution, using Jacobi's Zeta function.

- THESIS -
Used a special complex variable procedure for the electromagnetic field distribution of the TEM mode of a symmetrical two-parallel-plate transmission line. Also investigated the right formula to obtain and produce a parametric set of plots and tables for the appropriately normalized TEM field components and magnitudes, as well as potentials.

Kirtland AFB

Albuquerque, NM

COMPUTER INTERESTS

RESEARCH INTERESTS

PUBLICATIONS

-1976-

-1989-

-1991-

-1991-

-1992-

-1995-

MEMOS and MISC. PAPERS

-1993-

-1993-

-1993-

-1993-

-1994-

-1995-

-1995-