Results 31 to 40 of about 2,837,797 (287)
Fidelity-optimized quantum state estimation
New Journal of Physics, 2015 We describe an optimized, self-correcting procedure for the Bayesian inference of pure quantum states. By analyzing the history of measurement outcomes at each step, the procedure returns the most likely pure state, as well as the optimal basis for the ...
Amir Kalev, Itay Hen
doaj +1 more source
Performance Criterion of Phasor Measurement Units for Distribution System State Estimation
IEEE Access, 2019 A phasor measurement unit (PMU) is a device that can directly measure the phase angles of voltages and currents, with high accuracy, using accurate time signals.
Jonghoek Kim, Hyun-Tae Kim, Sungyun Choi
doaj +1 more source
Frequency Tracking and Parameter Estimation for Robust Quantum State-Estimation
, 2011 In this paper we consider the problem of tracking the state of a quantum system via a continuous measurement. If the system Hamiltonian is known precisely, this merely requires integrating the appropriate stochastic master equation. However, even a small
A. Doherty +16 more
core +1 more source
Quantum state estimation and large deviations [PDF]
, 2004 In this paper we propose a method to estimate the density matrix \rho of a d-level quantum system by measurements on the N-fold system. The scheme is based on covariant observables and representation theory of unitary groups and it extends previous ...
Bahadur R. R. +10 more
core +2 more sources
State Variable Implications on Hydraulic State Estimation
Water Resources Management, 2022 AbstractHydraulic State Estimation allows to estimate the most likely state of a water supply network considering multiple sources of information and their associated uncertainty. It is set out as an optimization problem, often addressed according to the Weighted Least Squares criterion. It can be formulated differently depending on the selected set of
Emilio Ruiz +2 more
openaire +1 more source
A Statistical Approach for Distribution System State Estimation
Turkish Journal of Electrical Power and Energy SystemsPower system state estimation is a useful technique that enables the system to be monitored when sufficient measurements are not available. Although it has been practiced for a long time, distribution system state estimation (DSSE) is still challenging ...
Ibrahim Gursu Tekdemir
doaj +1 more source
Distributed State Estimation of Multi-region Power System based on Consensus Theory
Energies, 2019 Effective state estimation is critical to the security operation of power systems. With the rapid expansion of interconnected power grids, there are limitations of conventional centralized state estimation methods in terms of heavy and unbalanced ...
Shiwei Xia +6 more
doaj +1 more source
Cross-Modal Health State Estimation
, 2018 Individuals create and consume more diverse data about themselves today than any time in history. Sources of this data include wearable devices, images, social media, geospatial information and more. A tremendous opportunity rests within cross-modal data
Banister E. W. +8 more
core +1 more source
Secure State Estimation: Optimal Guarantees against Sensor Attacks in the Presence of Noise [PDF]
, 2015 Motivated by the need to secure cyber-physical systems against attacks, we consider the problem of estimating the state of a noisy linear dynamical system when a subset of sensors is arbitrarily corrupted by an adversary.
Diggavi, Suhas +4 more
core +3 more sources
Estimating State‐Contingent Production Frontiers [PDF]
American Journal of Agricultural Economics, 2006 Chambers and Quiggin (2000) use state‐contingent representations of risky production technologies to establish important theoretical results concerning producer behavior under uncertainty. Unfortunately, perceived problems in the estimation of state‐contingent models have limited the usefulness of the approach in policy formulation.
O'Donnell, CJ, Griffiths, WE
openaire +5 more sources