Results 11 to 20 of about 596,245 (221)
Quantum Optics Parity Effect on Generalized NOON States and Its Implications for Quantum Metrology
Annalen der Physik, Volume 534, Issue 12, December 2022., 2022 A quantum optical‐parity effect is found to emerge in the evolution from generalized NOON states of a two‐level atom or molecule coupled to a cavity field. The parity of the photon number influences the quantum entanglement properties of the system, resulting in a parity‐dependent ability to extract states of the evolving system for precise phase ...
Agostino Migliore, Antonino Messina
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Prescribed performance control approaches, applications and challenges: A comprehensive survey
Asian Journal of Control, Volume 25, Issue 1, Page 241-261, January 2023., 2023 Abstract As to control systems, transient performance is as important as steady‐state performance. For some special dynamic systems, transient performance is a more prior index in comparison with the steady‐state one. Prescribed performance control (PPC) has been proved to be a powerful tool that guarantees control system outputs/errors with desired ...
Xiangwei Bu
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Goodness‐of‐fit tests in proportional hazards models with random effects
Biometrical Journal, Volume 65, Issue 1, January 2023., 2023 Abstract This paper deals with testing the functional form of the covariate effects in a Cox proportional hazards model with random effects. We assume that the responses are clustered and incomplete due to right censoring. The estimation of the model under the null (parametric covariate effect) and the alternative (nonparametric effect) is performed ...
Wenceslao González‐Manteiga +2 more
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Application of Hilbert instantaneous spectrum on improved bolt anchoring quality detection
Engineering Reports, Volume 4, Issue 12, December 2022., 2022 A method utilizing a way to compute the instantaneous frequency curve of the bolt signal is proposed to overcome the phase folding problem existing in the Hilbert transform spectrum. The instantaneous frequency curve of the signal can help accurately identify the reflected signal from the bolt bottom and the position of the defect, thus accurately ...
Chen Li, Guozhong Gao, Yunsheng Wang
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International Journal of Energy Research, Volume 46, Issue 15, Page 22516-22529, December 2022., 2022 This study presents a control oriented, stochastic filtering approach for online, continuous estimation of the exchange current density in low temperature proton exchange membrane fuel cells. The fuel cell is framed as a Markov model where the exchange current density is posed as the stochastic hidden state and a particle filter algorithm is developed ...
José Agustín Aguilar +2 more
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Automated handling of complex chemical structures in Z‐matrix coordinates—The chemcoord library
Journal of Computational Chemistry, Volume 44, Issue 5, Page 710-726, February 15, 2023., 2023 We propose an algorithm for a chemically intuitive automatically generated Z‐matrix representation, including reliable back‐and‐forth transformation between coordinate spaces while properly handling linear dependencies. The usefulness of the method is showcased for molecule manipulation and initial guesses of reaction pathways.
Oskar Weser +2 more
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Australian medical imaging and world war one
Journal of Medical Radiation Sciences, Volume 69, Issue 4, Page 510-517, December 2022., 2022 World War One was a decisive moment in the development of the the radiography profession. This paper details the environment of that time, describes our professions soldier pioneers and their daily challenges. Abstract Twenty years after the birth of medical imaging from Röntgen's 1895 discovery, military authorities understood the advantage of ...
Luke C. Barclay, Giovanni Mandarano
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Numerical Linear Algebra with Applications, Volume 30, Issue 1, January 2023., 2023 Abstract In this work, we focus on a fractional differential equation in Riesz form discretized by a polynomial B‐spline collocation method. For an arbitrary polynomial degree p$$ p $$, we show that the resulting coefficient matrices possess a Toeplitz‐like structure. We investigate their spectral properties via their symbol and we prove that, like for
Mariarosa Mazza +3 more
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Cosmic Inflation and Genetic Algorithms
Fortschritte der Physik, Volume 71, Issue 1, January 2023., 2023 Abstract Large classes of standard single‐field slow‐roll inflationary models consistent with the required number of e‐folds, the current bounds on the spectral index of scalar perturbations, the tensor‐to‐scalar ratio, and the scale of inflation can be efficiently constructed using genetic algorithms.
Steve A. Abel +3 more
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Parameter and q asymptotics of Lq‐norms of hypergeometric orthogonal polynomials
International Journal of Quantum Chemistry, Volume 123, Issue 2, January 15, 2023., 2023 The weighted Lq‐norms of orthogonal polynomials are determined when q and the polynomial's parameter tend to infinity. They are given in this work by the leading term of the q and parameter asymptotics of the corresponding quantities of the associated probability density. These results are not only interesting per se, but also because they control many
Nahual Sobrino, Jesus S. Dehesa
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