In this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm. Simulation software PICS3D, which self-consistently combines the 3D simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. Simulation results show that chan...

 Spatial generalized linear mixed models are used commonly for modelling non-Gaussian discrete spatial responses. We present an algorithm for parameter estimation of the models using Laplace approximation of likelihood function. In these models, the spatial correlation structure of data is carried out by random effects or latent variables. In most spatial analysis, it is assumed that rando...

We derive moment inequalities for the supremum of empirical processes of U-Statistic structure and give application to kernel type density  estimation ‎and estimation of the distribution function for functions of observations.  

Diffraction peak profile analysis (or Line Profile Analysis, LPA) has recently been developed to such an extent that it can be applied as a powerful method for the characterization of microstructures of crystalline materials in terms of crystallite size-distribution and dislocation structures. Physically based theoretical functions and their Fourier coefficients are available for both, the size...

Traditionally power distribution networks are either not observable or only partially observable. This complicates development and implementation of new smart grid technologies, such as those related to demand response, outage detection and management, and improved load-monitoring. Here, inspired by proliferation of the metering technology, we discuss statistical estimation problems in structur...

Recent experimental results from H1 and ZEUS are presented with respect to their contribution to the understanding of the inner structure of the proton. With the large 1997 statistics, the proton structure function F 2 has been measured with remarkable precision over a wide kinematic range. At high values of Q 2 , eeects due to the Z 0 and W bosons have been observed. Furthermore, new results o...

Un corpus de recherches empiriques effectuées dans différents pays a confirmé que l’inégalité des revenus est liée d’une manière négative à la croissance économique. Cet article fournit une voie à suivre pour expliquer ce rapport. La nouveauté de notre démarche réside dans l’utilisation de la démographie pour expliquer l’écart entre les pays en matière de croissance économique et répartition de...