The Sequentially Drilled Joint Congruence (SeDJoCo) transformation has been identified as an important tool in the context of both Blind Source Separation (BSS) and closed-form Coordinated Beamforming (CBF) for the multi-user MIMO downlink. It can be interpreted as a new tensor decomposition. In this contribution, we introduce an extension of the SeDJoCo problem and address its links to the fie...

we propose a new ring resonator side-coupled m-z interferometer all-optical switch throughthe pumped nonlinear directional coupler. by controlling pump power p to lead the coupler reflectivityr approaching to 1, the resonator finesse will be enhanced dramatically, and then the minimumswitching power in silica-based practice devices can be obtained. as a sample, we use a nonlinearcoupler made by...

The fossil record holds a wealth of ecological data, including data on biotic interactions. For example, holes in the skeletons of invertebrates produced by drilling activities of their enemies are widely used for exploring the intensity of such interactions through time because they are common and easily distinguished from non-biotic holes or holes produced by other types of interactions. Such...

Deep Sea Drilling Project Leg 75 drilled into igneous basement in the Angola Basin at Site 530, located about 20 km north of the escarpment at the eastern end of the Walvis Ridge. Petrographic and geochemical characteristics of the basalts indicate that the basement is quite uniform, variations in chemical composition being related to weathering, crystal fractionation, and the modal abundances ...

Radon studies have been conducted in many countries of the world in indoor air but such studies in drinking waters are sparse. We present the results of Rn activity concentration measurements in drilled and dug well drinking waters from three large cities in Ogun State, southwestern Nigeria. The measurements were done suing high-resolution high-purity germanium (HPGe) detector (Canberra Industr...

Canister core desorption has been successfully applied to coal-bed methane evaluation and exploitation as the technique eliminates need for time-consuming down-hole fluid retrieval through flow testing. The also used exploration of early-stage tight shale gas reservoirs in recent years, although its success applicability are poorly understood. In this study, we analyzed a comprehensive canister...

Abstract The influence of the laser fluence on quality percussion-drilled holes was investigated both experimentally and by an analytical model. study reveals that edge drilled microholes depends reaching rear exit hole changes with number pulses applied after breakthrough. minimum must reach hole’s in order to obtain high-quality stainless steel found be 2.8 times ablation threshold.

by Hoek et al. 2002 and which is related to blasting, caused damage and stress relief; it may also be considered in the estimate of rock mass modulus from intact rock modulus. The recommendations of “D” values for tunnel and slope applications were provided by Hoek et al. 2002 . Unfortunately, no guidelines were provided for deep foundation application. The discussers related the disturbance fa...

We investigated the variation of drilled regions of expert and trainee surgeons performing virtual temporal bone surgery to identify their compliance with standard drilling procedures. To this end, we recruited seven expert and six trainee ENT surgeons, who were asked to perform the surgical preparations for cochlear implantation on a virtual temporal bone. The temporal bone was divided into si...