Mitre Corporation

About: Mitre Corporation is a company organization based out in Bedford, Massachusetts, United States. It is known for research contribution in the topics: Air traffic control & National Airspace System. The organization has 4884 authors who have published 6053 publications receiving 124808 citations. The organization is also known as: Mitre & MITRE.

Gaussian Markov Random Fields for Discrete Optimization via Simulation: Framework and Algorithms

Abstract: This paper lays the foundation for employing Gaussian Markov random fields (GMRFs) for discrete decision–variable optimization via simulation; that is, optimizing the performance of a simulated sys...

Active star centered fiber optic local area network

Abstract: The local area optical network interconnects a plurality of user terminals. The local area network includes an interface unit for receiving information from the user terminals and an active star node connected to the interface unit by fiber optic cables. In one embodiment, the active star centered node includes a passive optical star coupler having a plurality of ports for interconnecting the terminals. An optical receiver receives optical signals from the star coupler and is interconnected with an optical transmitter which transmits the signal from the receiver back into the star for distribution to the plurality of ports. In either embodiment, the star node includes an expansion port and an optically associated transmitter and receiver to allow multiple nodes to be connected to one another in an hierachial, branching architecture. In another embodiment, the active star centered node includes a passive input star coupler and a passive output star coupler. The local area networks organized around the active stars are portable, flexible and expandable.

System and method for stochastic aircraft flight-path modeling

Abstract: Stochastic models of aircraft flight paths and a method for deriving such models from recorded air traffic data. Each stochastic model involves identifying the flight plan for one or more aircraft; identifying important parameters from each flight plan, such as aircraft type, cruise altitude, and airspeed; optionally identifying flight plan amendments for each flight; representing each route of flight as a series of navigational fixes; representing at least one aircraft flight parameter probabilistically; modeling realistic differences in at least one dimension between each planned route of flight and the flight path as it might actually be flown; and communicating the modeled deviations or simulated flight paths to the user. At least one aircraft flight parameter is represented as a random variable with a particular statistical distribution, such as a normal (Gaussian), Laplacian, or logistic distribution; or with a more complex algorithm containing one or more random elements. The modeled flight parameters may be any of lateral position, longitudinal position, climb altitude, descent altitude, climb airspeed, descent airspeed, cruise airspeed, cruise altitude transition, or response time to a flight plan amendment.

Callisto: A Configurable Annotation Workbench.

Abstract: In order to support a range of textual annotation tasks, we have developed a new annotation tool called Callisto. To promote taskspecific specialization of the interface and associated constraint checking, Callisto provides a facility for the independent development, compilation and installation of task module plug-ins (in the form of Java Archive jar files). The common Callisto backend provides a set of annotation services to which all separate GUI components can subscribe, enabling a common framework through which annotation updates are propagated to all components. A number of annotation task models have already been defined, and those that are of very general applicability have been made easily re-configurable for small changes in task definition. Callisto is implemented in Java to make use of Java s considerable support for Unicode-encoded multilingual data. Callisto is freely available for downloading

Collaborative Virtual Environments for Analysis and Decision Support

Abstract: Creating a productive collaborative environment requires a delicate balance of technology, knowledge, and trust.