نتایج جستجو برای: track design procedure
تعداد نتایج: 1573934 فیلتر نتایج به سال:
the track stiffness experienced by a train will vary along the track. sometimes the stiffness variation may be very large within a short distance. one example is when an unsupported sleeper is hanging in the rail. track stiffness is then, locally at that sleeper, very low. at insulated joints the bending stiffness of the rail has a discontinuity implying a discontinuity also of the track stiffn...
This paper proposes a new control synthesis method for a class of discrete event systems modeled by controlled ordinary Petri nets with linear marking constraint. Monitor is constructed to track the system state resulted from the uncontrollable firing sequences. The maximally permissive feedback control policy then can be obtained based on the making of the monitor. No non-convex constraint tra...
This report describes a new open-domain answer retrieval system developed at the University of Edinburgh and gives results for the TREC-12 question answering track. Phrasal answers are identified by increasingly narrowing down the search space from a large text collection to a single phrase. The system uses document retrieval, query-based passage segmentation and ranking, semantic analysis from...
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