Generalized linear mixed models (GLMMs) are typically constructed by incorporating random effects into the linear predictor. The random effects are usually assumed to be normally distributed with mean zero and variance-covariance identity matrix. In this paper, we propose to release random effects to non-normal distributions and discuss how to model the mean and covariance structures in GLMMs s...

1. Abstract This paper describes an original and robust method to optimize the design of closed-loop mechanisms, especially parallel manipulators. In other words, these mechanisms include assembling constraints we solved using a Newton-Raphson algorithm which may fail when the Jacobian matrix of the constraints is ill-conditioned. Therefore, the technique we propose takes advantage of that cond...

A simple and elegant method is presented to perform anti-aliasing in computer-generated images. The method uses stratified sampling to reduce the occurrence of artifacts in the image and features a B-spline filter, of some desired order, to compute the final luminous intensity at each pixel. The method is scalable through the specification of the filter order. A B-spline filter of order one amo...

Computing phase diagrams of model systems is an essential part of computational condensed matter physics. In this paper, we discuss in detail the interface pinning (IP) method for calculation of the Gibbs free energy difference between a solid and a liquid. This is done in a single equilibrium simulation by applying a harmonic field that biases the system towards two-phase configurations. The G...

The class of density based minimum distance estimators provide attractive alternatives to the maximum likelihood estimator because several members of this class have nice robustness properties while being rst order eÆcient under the assumed model. A helpful computational technique { similar to the iteratively reweighted least squares used in robust regression { is introduced which makes these e...

Muscle wrapping computations are an important feature in musculoskeletal simulations. In this paper we present a novel Jacobian-based method for linebased muscle-path computations over multiple general smooth surfaces allowing for second-order Newton-Raphson iterations. The method is based on the analytical determination of infinitesimal displacements along geodesics using Jacobi fields. It doe...

Finding the equivalent circuit parameters for photovoltaic (PV) cells is crucial as they are used in modeling and analysis of PV arrays. made silicon. These materials have a nonlinear characteristic. This distorts sinusoidal waveform current voltage. As result, harmonic components formed system. The cell smallest building block system produces voltages between 0.5 V 0.7 V. It serves source curr...

This paper describes sensitivity indicator method to identify weakest bus of the system. It also describes method of calculating the amount of reactive power to be injected at the load bus to avert the voltage instability as the load on the load bus increases. In this paper IEEE-57 BUS system has been considered. First, the weakest bus is identified using sensitivity indicator method. Then Load...