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The ideal location for an aberration corrector in an electron-optical column is exactly at the place where the aberration to be corrected is introduced. In practice, this of course cannot be achieved. The resultant separation between where an aberration is introduced and where it is removed produces combination aberrations for all aberrations of higher than first order. A case of particular imp...

Interferometric techniques are attractive in wavefront sensing because they give a direct measure of the phase (as opposed to the first or second derivative) which means they are useful for use with a piston-only wavefront corrector (such as a liquid crystal spatial light modulator, or some MEMS mirrors). In this paper we describe (also described in ref 1) a novel method of implementing a commo...

Corrector is a client-server web application which provides immediate feedback to students during practice sessions by automatically validating the proposed answers. The teacher needs only focus on solving comprehension problems with clever explanations. Corrector is especially well fitted to help teaching SQL, the language used in relational database systems. Indeed, some questions admit many ...

We study the corrector equation in stochastic homogenization for a simplified Bernoulli percolation model on Z, d > 2. The model is obtained from the classical {0, 1}-Bernoulli bond percolation by conditioning all bonds parallel to the first coordinate direction to be open. As a main result we prove (in fact for a slightly more general model) that stationary correctors exist and that all finite...

In this paper, we carry out a detailed performance analysis of the blind source separation based I/Q corrector operating at the baseband. Performance of the digital I/Q corrector is evaluated not only under time-varying phase and gain errors but also in the presence of multipath and Rayleigh fading channels. Performance under low-SNR and different modulation formats and constellation sizes is a...

This paper considers the development of a two-point predictor-corrector block method for solving delay differential equations. The formulae are represented in divided difference form and the algorithm is implemented in variable stepsize variable order technique. The block method produces two new values at a single integration step. Numerical results are compared with existing methods and it is ...

We consider a family of primal/primal-dual/dual search directions for the monotone LCP over the space of n n symmetric block-diagonal matrices. We consider two infeasible predictor-corrector path-following methods using these search directions, with the predictor and corrector steps used either in series (similar to the Mizuno-Todd-Ye method) or in parallel (similar to Mizuno et al./McShane's m...