Results 81 to 90 of about 71,031 (218)
Operational Current Amplifier-Based Quadrature Oscillators Family
IEEE AccessThis paper investigates the application of the operational current amplifier (OCA) in the design of quadrature sinusoidal oscillators. There are numerous quadrature sinusoidal oscillators based on the three fundamental amplifiers namely the operational ...
Hussain A. Alzaher, Ibrahim M. Alkhalifa
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Transmission of 344 Gb/s 16-QAM Using a Simplified Coherent Receiver Based on Single-Ended Detection
IEEE Photonics Journal, 2016 We demonstrate a single-wavelength, 344-Gb/s, 43-Gb 16-quadrature amplitude modulation (QAM) polarization division multiplexed signal transmission over 800 km operating below the hard-decision forward error correction (FEC) BER threshold of $3.8\times ...
Thang M. Hoang +9 more
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Specification Tests for Jump‐Diffusion Models Based on the Characteristic Function
International Statistical Review, EarlyView.Summary Goodness‐of‐fit tests are suggested for several popular jump‐diffusion processes. The suggested test statistics utilise the marginal characteristic function of the model and its L2‐type discrepancy from an empirical counterpart. Model parameters are estimated either by minimising the aforementioned L2‐type discrepancy or by maximum likelihood ...
Gerrit Lodewicus Grobler +3 more
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Journal of King Saud University: Engineering Sciences, 2005 . This paper presents a systematic procedure in which the variation in induced stresses in soil layers is effectively dealt with using only two sublayers. A customized two -point Gauss quadrature formula was derived to evaluate induced stresses such that
Mosleh A. Al-Shamrani
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A corrected quadrature formula and applications
, 2003 A straightforward 3-point quadrature formula of closed type is derived that improves on Simpson's rule. Just using the additional information of the integrand's derivative at the two endpoints we show the error is sixth order in grid spacing.
Roberts, A. J., Ujevic, Nenad
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Density‐Valued ARMA Models by Spline Mixtures
Journal of Time Series Analysis, EarlyView.ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
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Reinforcement Learning for Jump‐Diffusions, With Financial Applications
Mathematical Finance, EarlyView.ABSTRACT We study continuous‐time reinforcement learning (RL) for stochastic control in which system dynamics are governed by jump‐diffusion processes. We formulate an entropy‐regularized exploratory control problem with stochastic policies to capture the exploration–exploitation balance essential for RL.
Xuefeng Gao, Lingfei Li, Xun Yu Zhou
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Zhejiang Daxue xuebao. Lixue banIn this paper, we establish the Simpson quadrature formula for continuous periodic functions and investigate its quadrature accuracy for trigonometric polynomials, that is, when the quadrature formula holds exactly.
王丹丹(WANG Dandan), 赵易(ZHAO Yi)
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Plant, Cell &Environment, EarlyView.ABSTRACT Salinity combined with waterlogging is a major abiotic stress that severely limits crop growth and yield. We investigated species‐specific adaptations to salinity under constant waterlogging conditions in the wild halophytic barleys Hordeum marinum and H. glaucum, compared with the cultivated H. vulgare.
Stanislav Isayenkov +10 more
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Weighted Optimal Formulas for Approximate Integration
MathematicsSolutions to problems arising from much scientific and applied research conducted at the world level lead to integral and differential equations. They are approximately solved, mainly using quadrature, cubature, and difference formulas. Therefore, in the
Kholmat Shadimetov, Ikrom Jalolov
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