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Path-integral computations of tunneling processes
The Journal of Chemical Physics, 2005The application of the path-integral methodology of Chandler and Wolynes [D. Chandler and P. G. Wolynes, J. Chem. Phys. 74, 4078 (1981)] to the calculation of one-electron-tunneling probabilities is revisited. We show that the evaluation of the kink free energy that is related to the tunneling splitting is associated with “polymer bead” distributions ...
Ilan, Benjamin, Abraham, Nitzan
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Path-integral computation of superfluid densities
Physical Review B, 1987The normal and superfluid densities are defined by the response of a liquid to sample boundary motion. The free-energy change due to uniform boundary motion can be calculated by path-integral methods from the distribution of the winding number of the paths around a periodic cell.
, Pollock, , Ceperley
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Using Selective Path-Doubling for Parallel Shortest-Path Computations
Journal of Algorithms, 1997Summary: We consider parallel shortest-paths computations in weighted undirected graphs \(G=(V,E)\), where \(n=|V|\) and \(m=|E|\). The standard \(O(n^3)\) work path-doubling (Floyd-Warshall) algorithm consists of \(O(\log n)\) phases, where in each phase, for every triplet of vertices \((u_1, u_2, u_3) \in V^3\), the distance between \(u_1\) and \(u_3\
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Completion Time and Energy Optimization in the UAV-Enabled Mobile-Edge Computing System
IEEE Internet of Things Journal, 2020Completion time and energy consumption of the unmanned aerial vehicle (UAV) are two important design aspects in UAV-enabled applications. In this article, we consider a UAV-enabled mobile-edge computing (MEC) system for Internet-of-Things (IoT ...
Cheng Zhan +4 more
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2008
Definition In the United states, only 9.3% of the households do not have cars. Driving is part of people’s daily life. GIS systems like MapQuest and MapPoint are heavily relied on to provide driving directions. However, surprisingly enough, existing systems either ignore the driving speed on road networks, or assume the speed remains constant on the ...
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Definition In the United states, only 9.3% of the households do not have cars. Driving is part of people’s daily life. GIS systems like MapQuest and MapPoint are heavily relied on to provide driving directions. However, surprisingly enough, existing systems either ignore the driving speed on road networks, or assume the speed remains constant on the ...
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Crowdsourcing computing resources for shortest-path computation
Proceedings of the 20th International Conference on Advances in Geographic Information Systems, 2012Crowdsourcing road network data, i.e., involving users to collect data including the detection and assessment of changes to the road network graph, poses a challenge to shortest-path algorithms that rely on preprocessing. Hence, current research challenges lie with improving performance by adequately balancing preprocessing with respect to fast ...
Efentakis A., Theodorakis D., Pfoser D.
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Vertical Path Guidance Computer
IEEE Transactions on Aerospace and Electronic Systems, 1970A low-cost airborne computer which provides a multiangular glide path for the landing problem is independent of ILS or GCA methods. A barometric altitude signal is divided by slant-range information from a DME interrogator. The resulting ground-based angle is subtracted from the selected approach angle to provide the displayed departure from the glide ...
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Computational crack path prediction
Theoretical and Applied Fracture Mechanics, 1985Abstract A computer program has been developed for the numerical prediction of curved crack growth paths under proportional loading conditions. The numerical prediction is performed by the step-by-step method in cooperation with the stress analysis ahead of the crack tip and the determination of the curved increment of the crack growth.
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Computing almost shortest paths
ACM Transactions on Algorithms, 2001We study the <i>s-sources almost shortest paths</i> (abbreviated <i>s-ASP</i>) problem. Given an unweighted graph <i>G</i> = (<i>V,E</i>), and a subset <i>S</i> ⊆ <i>V</i> of <i>s</i> nodes, the goal is to compute almost shortest paths between all ...
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Path length statistics in reservoir computers
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2020Because reservoir computers are high dimensional dynamical systems, designing a good reservoir computer is difficult. In many cases, the designer must search a large nonlinear parameter space, and each step of the search requires simulating the full reservoir computer.
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