Influence of Shear Loading on the Shapes of Optimal Holes in a Quasi-Orthotropic Plate

Materials Science - We develop an analytic-numerical algorithm for the determination of the optimal shape of smooth holes (with minimum stress concentration) in quasiorthotropic plates subjected to...     

Hardware implementation of radial-basis neural networks with Gaussian activation functions on FPGA

Neural Computing and Applications - This article introduces a method for realizing the Gaussian activation function of radial-basis (RBF) neural networks with their hardware implementation on...     

Deformation of an Isotropic Plate with Periodic System of Curvilinear Holes and Plasticity Bands

Materials Science - By the method of singular integral equations, we solve a plane elastoplastic problem of fracture mechanics for an isotropic plane with an infinite series of curvilinear holes...     

Multiagent technology for the application of a distributing function for load balancing in multiserver systems

We consider the characteristic features of applying a distributing function to load balancing in multiserver networks.     

Two-Dimensional Periodic Problem of the Theory of Elasticity for an Isotropic Plane with Curvilinear Holes and Edge Cracks

Materials Science - By the method of singular integral equations, we solve a two-dimensional periodic problem of the theory of elasticity for an isotropic plane with infinitely many curvilinear...     

Preparation of metal-polymer composite membranes with conductance asymmetry

The structure and electrochemical properties of a poly(ethylene terephthalate) track membrane, one side of which was coated with thin aluminum layers by thermal vacuum evaporation, have been investigated. It has been found that the deposition of the aluminum layer on the surface leads to the creation of metal-polymer composite membranes that exhibit in electrolyte solutions conductance asymmetry, the rectification effect similar to the p-n junction in semiconductors. This is due to a change in pore geometry of the composite membranes and to the existence in pores of the interface between the original membrane and the aluminum layer, which bear oppositely charged functional groups on their surface in aqueous solutions. Information on ion transport in the membranes has been obtained by impedance spectroscopy.     

Fluorinated graphene: Fluorographene: A Two‐Dimensional Counterpart of Teflon (Small 24/2010)

A stoichiometric derivative of graphene with a fluorine atom attached to each carbon is reported. Raman, optical, structural, micromechanical, and transport studies show that the material is qualitatively different from the known graphene‐based nonstoichiometric derivatives. Fluorographene is a high‐quality insulator (resistivity >10¹² Ω) with an optical gap of 3 eV. It inherits the mechanical strength of graphene, exhibiting a Young’s modulus of 100 N m^?1 and sustaining strains of 15%. Fluorographene is inert and stable up to 400 °C even in air, similar to Teflon.