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As computer systems become increasingly internetworked, there is a growing class of distributed realtime embedded (DRE) applications that have characteristics and present challenges beyond those of traditional embedded systems. They involve many heterogeneous nodes and links, shared and constrained resources, and are deployed in dynamic environments with(More)
Th is report was prepared through the collaborative eff orts of the individuals noted below. It refl ects their expert contributions as well as the many insights generated at the Th is report was prepared as an account of work cosponsored by the National Institute of Standards and Technology (NIST). Th e views and opinions expressed herein do not(More)
developed a legacy software reengineering capability that parses and converts JOVIAL source files into language-neutral graph-based representations of their operation. This article introduces three suggested types of software wrappers and describes their use as a key technology for modernizing legacy systems, discusses a process for selecting which upgrade(More)
Distributed real-time and embedded (DRE) systems in which application requirements and environmental conditions may not be known a priori—or which may vary at run-time—can benefit from an adaptive approach to management of quality-of-service (QoS) to meet key constraints, such as end-to-end timeliness. Moreover, coordinated management of multiple QoS(More)
Net-centric information spaces have become a necessary concept to support information exchange for tactical warfight-ing missions using a publish-subscribe-query paradigm. To support dynamic, mission-critical and time-critical operations , information spaces require quality of service (QoS)-enabled dissemination (QED) of information. This paper describes(More)
The Sofhyare Enabled Control (SEC) program is a research program funded by the United States Defense Advanced Research Projects Agency (DARPA). The goal of SEC is to develop new controls and sofhyare technology that will enable new control applications that are impractical or intractable using current approaches. This paper describes the Open Control(More)
– Distributed real-time and embedded (DRE) systems in which application requirements and environmental conditions may not be known a priori—or which may vary at run-time—can benefit from an adaptive approach to management of quality-of-service (QoS) to meet key constraints, such as end-to-end timeliness. Moreover, coordinated management of multiple QoS(More)
A vionics upgrades are frequent and occur for many reasons, including warfighting enhancements, countering changing threats, hardware obsolescence, and computer resource under-capacity. A typical production avionics upgrade cycle for military aircraft frequently involves embedded software changes. New versions of mission processor software, the most(More)