Results 41 to 50 of about 154,233 (325)
IEEE Access, 2018 Low photon-level signals used in most free-space quantum communication systems require a narrow field of view in the receiver to minimize the amount of background noise coupled into the single photon detectors.
Veronica Fernandez +3 more
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Mathematics, 2020 We consider a linear continuous-time control system with time-invariant linear bounded operator coefficients in a Hilbert space. The controller in the system has the form of linear state feedback with a time-varying linear bounded gain operator function.
Vasilii Zaitsev, Marina Zhuravleva
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Momentum space spinning correlators and higher spin equations in three dimensions
Journal of High Energy Physics, 2020 In this article, we explicitly compute in momentum space the three and four-point correlation functions involving scalar and spinning operators in the free bosonic and the free fermionic theory in three dimensions.
Sachin Jain +2 more
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On free loop spaces of toric spaces
, 2014 Growth of the Hilbert-Poincarë series for the rational homology of the free loop space of a toric space is addressed. In case the toric space is a manifold, the structure of the fan dictates whether the Hilbert-Poincarë series has exponential growth. Applications are made to the existence of infinitely many geometrically distinct periodic geodesics.
Bahri, A. +3 more
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, 2022 We report on the realization of high-performance silica integrated two-dimensional lens assisted beam-steering (LABS) arrays along with the first-of-their-kind point-to-multiplepoint optical frequency transfer. {The LABS equips with $N$ antennas} and has
Jianping Chen (54279) +6 more
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New Hamiltonian constraint operator for loop quantum gravity
Physics Letters B, 2015 A new symmetric Hamiltonian constraint operator is proposed for loop quantum gravity, which is well defined in the Hilbert space of diffeomorphism invariant states up to non-planar vertices with valence higher than three. It inherits the advantage of the
Jinsong Yang, Yongge Ma
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Suboptimal controller design of global active noise control system for various acoustic environments
Scientific Reports, 2023 Conventional active noise control (ANC) systems in enclosed spaces are not easy to implement experimentally because they require a large number of microphones to measure sound pressure in global areas.
Ikchae Jeong, Youngjin Park
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SPACES OF FREE LOOPS ON REAL PROJECTIVE SPACES
Kyushu Journal of Mathematics, 2005 Let \(L(X)\) be the free loop space on \(X\). For \(X= S^m\) or \(\mathbb{R} P^m\) there is a natural decomposition \(L_0(X)\coprod L_1(X)\) and natural maps \(Q^{n,d}_0(X)\to L_0(X)\), \(Q^{n,d}_1(X)\to L_1(X)\) where \(Q^{n,d}_{\varepsilon}(X)\), \(\varepsilon= 0,\,1\) are defined in terms of \(n\)-tuples of polynomials with real or complex ...
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Using Advanced Industrial Robotics for Spacecraft Rendezvous and Docking Simulation
, 2011 One of the most challenging and risky missions for spacecraft is to perform Rendezvous and Docking (RvD) autonomously in space. To ensure a safe and reliable operation, such a mission must be carefully designed and thoroughly verified before a real ...
Ou Ma, Boge, Toralf, Toralf Boge, Ma, Ou
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International Journal of Advanced Robotic Systems, 2018 It is difficult to obtain a precise mathematical model of free-floating space robot for the uncertain factors, such as current measurement technology and external disturbance. Hence, a suitable solution would be an adaptive robust control method based on
Zhang Wenhui +4 more
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