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Maximizing the Probability of Arriving on Time
2013We study the problem of maximizing the probability of arriving on time in a stochastic network. Nodes and links in the network may be congested or uncongested, and their states change over time and are based on states of adjacent nodes. Given a source, destination, and time limit, the goal is to adaptively choose the next node to visit to maximize the ...
Ananya Christman, Joao Cassamano
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On Time-of-arrival Positioning in a Multipath Environment
IEEE Transactions on Vehicular Technology, 2005Wireless geolocation in a multipath environment is of particular interest for wideband communications and fast-developing ultrawideband (UWB) technologies. Conventional methods are solely based on first arriving signals. In this paper, it is investigated whether and under what conditions processing delay estimates of multipath components in addition to
Yihong Qi +2 more
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Time-of-arrival estimation for blind beamforming
2013 18th International Conference on Digital Signal Processing (DSP), 2013Ad-hoc arrays formed by mobile devices are increasingly available to capture audio and video in social events. Using spatial signal processing algorithms, e.g., beamforming, with microphone signals of such arrays is hindered by the unknown locations of the devices and the lack of temporal synchronization between them. While self-calibration methods can
Tinakari Aki, Pertilä Pasi
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Transportation Research Record: Journal of the Transportation Research Board, 2006
Finding optimal paths in stochastic networks is an important topic in many scientific and engineering fields. To cope with uncertainty, various performance measures, including expected travel time, reliability, value at risk, and expectation with chance constraint, have been introduced. The literature has shown that adaptive strategies that incorporate
Yu Nie, Yueyue Fan
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Finding optimal paths in stochastic networks is an important topic in many scientific and engineering fields. To cope with uncertainty, various performance measures, including expected travel time, reliability, value at risk, and expectation with chance constraint, have been introduced. The literature has shown that adaptive strategies that incorporate
Yu Nie, Yueyue Fan
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Predicting Shuttle Arrival Time in Istanbul
2019Nowadays, transportation companies look for smart solutions in order to improve quality of their services. Accordingly, an intercity bus company in Istanbul aims to improve their shuttle schedules. This paper proposes revising scheduling of the shuttles based on their estimated travel time in the given timeline.
Selami Çoban +2 more
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Time of arrival and Time Sum of arrival based NLOS identification and localization
2012 IEEE 14th International Conference on Communication Technology, 2012Non-Line of Sight (NLOS) error due to the blockage of direct paths has been considered as the major problem in the wireless localization. Therefore, this paper studies the influence on different algorithms caused by the same NLOS error in order to identify LOS base stations (BS) from NLOS BS. Specifically, Time of Arrival (TOA) based algorithm and Time
null Zhilong Zheng +4 more
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Comment on “Arrival time in quantum mechanics” and “Time of arrival in quantum mechanics”
Physical Review A, 1999Contrary to claims contained in papers by Grot, Rovelli, and Tate [Phys. Rev. A 54, 4676 1996)] and Delgado and Muga [Phys. Rev. A 56, 3425 (1997)], the ``time operator,'' which I have constructed [Rep. Math. Phys. 6, 361 (1974)] in an axiomatic way, is a self-adjoint operator existing in a usual Hilbert space of (nonrelativistic or relativistic ...
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Physics Letters A, 1993
Abstract A simple derivation, using Bohm trajectories, is given of Dumont and Marchioro's expression for the distribution of arrival times of transmitted particles at a point on the far side of a 1D barrier. Calculated distributions are presented and the “quantum speed-up effect” discussed from the Bohm trajectory viewpoint.
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Abstract A simple derivation, using Bohm trajectories, is given of Dumont and Marchioro's expression for the distribution of arrival times of transmitted particles at a point on the far side of a 1D barrier. Calculated distributions are presented and the “quantum speed-up effect” discussed from the Bohm trajectory viewpoint.
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Poisson Arrivals See Time Averages
Operations Research, 1982In many stochastic models, particularly in queueing theory, Poisson arrivals both observe (see) a stochastic process and interact with it. In particular cases and/or under restrictive assumptions it has been shown that the fraction of arrivals that see the process in some state is equal to the fraction of time the process is in that state.
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SPIE Proceedings, 2003
A femtosecond electromagnetic pulse propagating in a linear dispersive medium is analyzed in phase spaces of (space, wave number) and (time, frequency). First moment densities are computed as eigenvalues of differential operators acting on Hilbert ray representations of the pulse in relevant domains.
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A femtosecond electromagnetic pulse propagating in a linear dispersive medium is analyzed in phase spaces of (space, wave number) and (time, frequency). First moment densities are computed as eigenvalues of differential operators acting on Hilbert ray representations of the pulse in relevant domains.
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