Non linear error correction models (NLECM) have been increasingly used recently in the econometric literature since they lead to more insightful results than the linear models in empirical studies. In this research we present alternative methods of dealing with non linearity in error correction models. We apply these models to the demand for money in Tunisia and our results show that we get bet...

N. Mannella, 2, ∗ S. Marchesini, † A. W. Kay, 2, ‡ A. Nambu, 3 T. Gresch, 4 S.-H. Yang, § B. S. Mun, 2, ¶ J. M. Bussat, A. Rosenhahn, ∗∗ and C. S. Fadley 2 Department of Physics, UC Davis, Davis, CA, USA Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Department of Physics, University of Tokyo, Tokyo, Japan Institute of Physics, University of Zurich, Zurich...

The performance and feasibility of switched multibeam array antennas in cellular systems is investigated. We assume that multicarrier power amplifiers (MCPA:s) are used in the base-station, to co-amplify the transmitted signals. The MCPA generates intermodulation distortion and it is shown how the multibeam antenna makes the radiated intermodulation distortion dependent on the azimuthal lookdir...

A variety of procedures have been proposed to correct ocular artifacts in the electroencephalogram (EEG), including methods based on regression, principal components analysis (PCA) and independent component analysis (ICA). The current study compared these three methods, and it evaluated a modified regression approach using Bayesian adaptive regression splines to filter the electrooculogram (EOG...

WFC3 IR channel data are obtained in the form of multiple, non-destructive readouts, grouped into “ramps”, similar to the method employed by NICMOS. This strategy facilitates the characterization of the non-linearity of the IR Focal Plane Array (FPA), as the detector’s response to a steady signal can be measured multiple times, until the detector becomes saturated. Using test data collected in ...

Introduction Gradient coils in MR scanners are assumed to produce linear magnetic field gradients, however high-speed gradients show nonlinear characteristics as a trade-off[1]. This fact creates structural deformations in MR images during reconstruction, as the gradients are assumed to be linear. A correction for these structural deformations has been shown to be imperative in multi-site struc...

This paper presents a 14bit 500MS/s SHA-less pipelined analog-to-digital converter (ADC) implemented in 40nm CMOS. A high-linearity pseudo-differential push-pull input buffer with an anti-oscillation technique and nonlinear parasitism eliminate is proposed to stably drive the stages while keeping low distortion. Moreover, digital controlled aperture-error calibration also employed offset of com...

The paper presents the results of the experimental validation of a method for digital compensation of ADC non-linearity errors. First, the theory underlying the method is briefly described. Then, the compensation method has been validated both on sinusoidal signals and on 3 generation mobile telecommunication signals, compliant to 3GPP specifications.