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A new optimal guidance algorithm for aeroassisted orbital transfer of reentry vehicle is presented. The complex aeroassisted orbital transfer guidance problem is translated into a trajectory optimization problem which is solved with optimal control theory. Based on the simplified dynamic equations, the Hamilton function and adjoint state equation for optimization is built. Sequentially, the problem...
The features of P2P networking architecture can contribute to robustness and scalability, however, it also introduces network-oblivious traffic, which brings big pressure to the ISPs. Meanwhile, since traffic of P2P applications occupies much of bandwidth in bottleneck links, non-p2p applications may be severely harmed due to lack of bandwidth. To conquer this problem, previous works mainly focused...
Workflow scheduling which guarantees anticipated QoS (quality of service) is a complex problem in grids. In this paper, the budget-constrained scheduling of workflows represented by DAG (directed acyclic graph) with the objective of time optimization is considered. A new priority rule-based iterative heuristic is proposed. According to the property of serial activities in DAG, the concept called SC...
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