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A major open question for advocates of Model-Based Systems Engineering (MBSE) is the question of how system and subsystem engineers will work together. The Systems Modeling Language (SysML), like any language intended for a large audience, is in tension between the desires for simplicity and for expressiveness. In order to be more expressive, many specialized language elements may be introduced, which...
A set of analysis tools has been created in a community-based team environment to support NASA ground resource allocation and planning. This new tool, called GRAPE (ground resource allocation and planning environment), combines analysis, monitoring, and search capabilities into an existing community environment where wikis, blogs, document libraries, calendars, discussion forums, lists, progress management,...
The deep space network (DSN) is an international network of antennas that supports all of NASA's deep space missions. With the increasing demand of tracking time, DSN is highly over-subscribed. Therefore, the allocation of the DSN resources should be optimally scheduled to satisfy the requirements of as many missions as possible. Currently, the DSN schedules are manually and iteratively generated...
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