Three-dimensional (3D) natural convection (NC) processes in heterogeneous porous media and associated energy losses mixing are still poorly understood. Studies limited to two-dimensional domains because of computational burden, worsened by heterogeneity, which may demand grid refinement at high permeability zones for accurate evaluation buoyancy forces. We develop a meshless Fourier series (FS)...

In [1] a low-complexity photon-counting receiver has been presented, which may be employed for weak-energy optical communications and which is typically modeled through its equivalent Binary Symmetric Channel (BSC) model. In this paper we consider the scheme described in [1], we model it as a time varying Binary Input-Multiple Output (BIMO) channel and analyze its performance in presence of sof...

In laser manufacturing, the cutting parameters, such as power, speed, assist gas pressure, and stand off distance, have a great influence on quality of machined parts. To ensure part, process information (cutting parameters) needs to be manually assigned adjusted according different geometry characters part edges, like arc line segment. The contours are then used for generating paths, leaving b...

Woodworking industries still consists of wood dust problems. Young workers are especially vulnerable to safety risks. To reduce risks, it is important to change attitudes and increase knowledge about safety. Safety training have shown to establish positive attitudes towards safety among employees. The aim of current study is to analyze the effect of QR codes that link to Picture Mix EXposure (P...

Based on gauge invariance, we show that the new threshold phenomenon is discovered in the φ radiative decays φ → γa0 → γπη and φ → γf0 → γππ. This enables to conclude that production of the lightest scalar mesons a0(980) and f0(980) in these decays is caused by the four-quark transitions, resulting in strong restrictions on the large NC expansions of the decay amplitudes. The analysis shows tha...

In this paper a level-based geometric representation for a real-time material removal simulator is presented. It will be embedded into a commercial NC machine. The representation and its accompanying architecture have been used for the generation of an interactive simulation of a part being machined, taking the NC machine feedback as input. The simulator complies with the following restrictions...

The effect of severely tightening the uniformity of Boolean circuit families is investigated. The impact on NC and its subclasses is shown to depend on the characterization chosen for the class, while classes such as P appear to be more robust. Tightly uniform subclasses of NC whose separation may be within reach of current techniques emerge.