Program for Tuesday, 8 February 2005

Our Next Joint Meeting with the Baltimore SIGAda Chapter
is scheduled for
Tuesday, 8 February 2005 at 7:30 P.M.
Stephen Leake of NASA
will be speaking on
Stephe's Ada Library; 15 years of Useful Ada Packages
at theBaltimore SIGAda Venue
(Johns Hopkins University/Applied Physics Laboratory in Laurel, Maryland)


To Members and Friends of DC SIGAda

Next Meeting:

Our Next Meeting is scheduled for Tuesday, 8 February 2005, as a Joint Meeting of the Baltimore and DC SIGAda Chapters. Stephen Leake will be speaking on "Stephe's Ada Library; 15 years of Useful Ada Packages".

The meeting will be held in the cafeteria of the Johns Hopkins University/Applied Physics Laboratory near Laurel, Maryland

Munchies and soft drinks will be served at 7:00 PM, the general meeting will start at 7:30 PM, and the program will follow shortly afterwards.

Abstract: Stephe's Ada Library; 15 years of Useful Ada Packages

SAL is a collection of stuff I've found useful in my projects A large part of SAL provides a coherent set of generic abstract data types, intended to be yet another entry in the "Standard Ada Library" discussion. My goal in this part of SAL was to provide Ada packages that take full advantage of the flexibility and power of Ada generics, while at the same time making things relatively easy for the casual user. Another large part of SAL provides math operations for kinematics and dynamics of masses in 3 dimensional space. Cartesian vectors, quaternions, orthonormal rotation matrices, moments of inertia, forces, acceleration, velocity are supported, in 3 and 6 degrees of freedom (translation and rotation).

Presenter: Stephen Leake

Stephen Leake graduated from Rensselaer Polytechnic Institute in 1980 with a Bachelor's in Physics, and got a Masters in Physics from University of Maryland at College Park in 1982. He worked in robotics at NIST (then NBS) until 1990, when he moved to NASA Goddard Space Flight Center, working on the space station robot program. That was his first experience with Ada, and he has been hooked ever since. Recently he has been building satellite simulators for Goddard, used in testing flight software and hardware.

Directions From Washington, DC

From the Capital Beltway (I-495),
1. Take the I-95 North exit;
2. Exit onto MD Route 32 West, at the Columbia exit (~ 10 miles);
3. Exit to go South (left) on U.S. Route 29; (~ 2.5 miles)
4. Right onto Johns Hopkins Rd at light to go WEST (There is now a new style overpass/interchange with a traffic circle on the East side of US RT.29 which replaced the traffic light at this intersection. -- Those traveling North on 29 from Silver Spring will take the exit for Gorman Road & Johns Hopkins Road to reach the traffic circle, then go 270 degrees around the circle to make a logical Left turn to go WEST on Johns Hopkins Road.)
5. Turn Right onto APL Road (first right past the lake)
6. Use Building 1 Visitor Parking;
7. Use Building 1 entrance near the flag-pole; The meeting is in the cafeteria.

Detailed Directions and Maps are available at: http://www.acm.org/sigada/locals/dc/Directions_JHU_APL.html

Slides From Recent Presentations Available:

At the DC SIGAda meeting on 14 October 2004, Terry Bollinger of MITRE gave an excellent presentation titled: "Security of Open Source Software in Distributed Systems" Slides from his presentation are available online as a PowerPoint Presentation at http://www.acm.org/sigada/locals/dc/200410_Terry_Bollinger_OSS_Security.ppt (ppt, 259KB).

Please Put on Your Calendar:

DC SIGAda Home Page and Maillist:

Please visit the DC SIGAda Web site at http://www.acm.org/sigada/locals/dc/ for additional information.

Please provide suggestions on the Web site and its contents. We are particularly interested in ways the DC SIGAda Home Page can serve you better.

Consider subscribing to our e-mail list. Simply send an email to:


with the body containing:

subscribe SIGAda-DC Your Name

To be removed from the list, send an email request to:


with the body containing:

signoff SIGAda-DC


Please forward this message to people who might be interested in attending. We welcome all new members as our attendance and interests grow.

Many thanks to all earlier participants, contributors, speakers, advisors, and friends, who are involved in helping to produce and attend the meetings.

Jeff Castellow, Chair, DC SIGAda

If you have comments or suggestions, email the DC SIGAda Webmaster

updated 7 February 2005