EIT image reconstruction is an ill-posed problem, the spatial resolution of the estimated conductivity distribution is usually poor and the external voltage measurements are subject to variable noise. Therefore, EIT conductivity estimation cannot be used in the raw form to correctly estimate the shape and size of complex shaped regional anomalies. An efficient algorithm employing a shape based ...

This paper presents a detailed description of the computer implementation of a generalized midpoint algorithm for integration of constitutive relations for von Mises’ hardening material. A nonlinear scalar equation for determination of the plastic multiplier is derived. The solution of this equation for a hardening material, by the Newton-Raphson method, usually converges in threefour iteration...

In this paper we present an algorithm for maximum likelihood estimation in the proportional odds model. The algorithm is an example of optimization transfer, also known as the method of iterative majorization. We discuss optimization transfer, present the proportional odds algorithm, and give a means for accelerating the convergence of the algorithm. The algorithm is stable and guaranteed to co...

An e cient way of obtaining travelling waves in a periodic uid system is described and tested. We search for steady states in a reference frame travelling at the wave phase velocity using a rst-order pseudospectral semi-implicit time scheme adapted to carry out the Newton’s iterations. The method is compared to a standard Newton–Raphson solver and is shown to be highly e cient in performing thi...

The significant increase in planned offshore wind parks and the tendency towards large parks in considerable distances offshore, make the well established HVDC technology a favorable solution for the connection of these large & distant offshore wind parks to the main power grid onshore. It is therefore necessary to adequately model the HVDC transmission links and integrate them in the load flow...

The objectives of this study were to provide new parameters to better understand labor curves, and to provide a model to predict the time to full cervical dilation (CD). We studied labor curves using the retrospective records of 594 nulliparas, including at term, spontaneous labor onset, and singleton vertex deliveries of normal birth weight infants. We redefined the parameters of Friedman's la...

Improvements to the optimal control Newton-Raphson GRAPE method for exact Hessian calculations are shown with examples of auxiliary matrix and ESCALADE methods. For an ensemble two-level systems realistic MRI conditions, new accelerated between 200 600 times faster ESCALADE, respectively.

Computer arithmetic is predominantly performed using binary arithmetic because the hardware implementations of the operations are simpler than those for decimal computation. However, many decimal fractions cannot be represented exactly as binary fractions with a finite number of bits. The value 0.1, for example, can only be represented as an infinitely recurring binary number. If a binary appro...