Results 211 to 220 of about 360,817 (268)
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Generalized Gysel Power divider with Arbitrary Power Ratio and Real Termination Impedances
2020 50th European Microwave Conference (EuMC), 2021The generalized design theory of Gysel power divider (GPD) has been proposed in this paper. Unlike conventional GPD, general solutions for GPD using transmission lines with different characteristic impedances and electrical lengths are derived. Further analysis shows that there is a continuum of solutions for the GPD while the existing solutions are ...
Chao Gai +3 more
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Effect of aspect ratio on frequency and power generation of a free-piston linear generator
Applied Thermal Engineering, 2021Abstract The thermal efficiency (40–50%) of free-piston linear generator (FPLG) engines is widely known to be higher than the conventional reciprocating engine (CRE) (30–40%). Future technology to optimise FPLG engine combustion necessitates the identification of a stroke to bore ratio (Aspect Ratio, AR).
Ezrann Z. Zainal A. +8 more
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A Generalized Power Supply Induced Jitter Model Based on Power Supply Rejection Ratio Response
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2021In this work, a generalized power supply induced jitter (PSIJ) model is proposed. The PSIJ sensitivity is obtained based on the evaluation of driver power supply rejection ratio (PSRR) response. The voltage ripple at the driver output is transformed into driver output jitter with the slope of the switching edge.
Yin Sun 0003 +2 more
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A ratio-of-uniforms method for generating exponential power variates
Journal of Statistical Computation and Simulation, 1990A ratio-of-uniforms method of generating exponential power variates is presented. It is compared to an established generalized rejection method developed by Tadikamalla (1980) and shown to be faster and more easily implemented.
Dean M. Young +2 more
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Transient disturbance detection for power systems with a general likelihood ratio test
2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013A voltage/current transient typically caused by islanding and switching operations is treated as an adverse phenomenon that degrades power quality, and it may cause damage to electrical equipment. Therefore, a reliable system should effectively detect and monitor a transient disturbance. In this paper, the transient detection problem is formulated as a
Xiufeng Song +2 more
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Power of the likelihood-ratio test of the general linear hypothesis in multivariate analysis
Biometrika, 19641-1. General background. In a basic paper on multivariate tests of linear hypotheses, Wilks (1932) applied the method of the likelihood ratio to the problem of testing the equality of mean vectors in k multivariate populations. The general approach of this early paper has been extended and expanded in the literature until, now, a procedure is available
Posten, H. O., Bargmann, R. E.
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Copula-Based Hedge Ratios for Renewable Power Generation
2013The electricity price and production volume determine the revenue of a renewable electricity producer. Feed-in variations to power plants and high price volatility result in significant cash flow uncertainty. A copula-based Monte Carlo model is used to relate price and production volume and to find optimal hedge ratios through minimization of risk ...
Audun Nordtveit +2 more
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On General Divisibility of Sums of Integral Powers of the Golden Ratio
1999The well-known Golden Ratio, \(\alpha = (1 + \sqrt {5} )/2 \), is the limit as n→∞ of the ratio of the Fibonacci numbers F n/F n-1 and the Lucas numbers L n/L n-1. Eq. (1) served to illustrate in [2,3] that unique integer solutions b = 7 and c = 11 exist. $$\frac{1}{\alpha^b}\sum_{i=1}^{10} \alpha^i= \frac{(\alpha^1 + \alpha^2 + \alpha^3 + \alpha^4
Herta T. Freitag, Daniel C. Fielder
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Power Calculations for Likelihood Ratio Tests in Generalized Linear Models
Biometrics, 1992SUMMARY Recently Self and Mauritsen (1988, Biometrics 44, 79-86) described an approach for sample size/power calculations within the framework of generalized linear models that is based on a noncentral chi-square approximation to the distribution of score statistics.
Steven G. Self +2 more
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Generalized rat‐race circuit with an arbitrary power‐split ratio
Electronics and Communications in Japan (Part II: Electronics), 1993AbstractA rat‐race circuit consists of four constituent transmission lines whose length at the center frequency is an odd multiple of one‐quarter wavelength. One of these four lines is designed to have a difference in length by an odd multiple of one‐half wavelength in comparison to the remaining three. Especially, the circuit made of three one‐quarter
Isao Ohta, Tadashi Kawai
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