We show that the popular water-filling algorithm for maximizing the mutual information in parallel Gaussian channels is sub-modular. The sub-modularity of water-filling algorithm is then used to derive online basestation allocation algorithms, where mobile users are assigned to one of many possible basestations immediately and irrevocably upon arrival without knowing the future user information...

In 1988, Appleton et al. (1) investigated the relation between transmitral Doppler flow dynamics and invasively determined measurements of pressure and flow in a variety of heart diseases. Based on their findings, three abnormal transmitral flow patterns by Doppler echocardiography have been proposed: 1) impaired relaxation, 2) pseudonormal and 3) restrictive patterns that reflect the pathophys...

The high-temperature thermoelectric properties of thallium (Tl) and potassium (K) double-filled cobalt antimonide (CoSb3)-based skutterudites with nominal compositions TlxK0.3Co4Sb12 (x = 0.1 - 0.3) were investigated. The filling fraction of Tl in CoSb3 was enhanced by co-filling with K, which resulted in all of the samples showing the filled-skutterudite single phase. Owing to the high filling...

Sloshing is one of challenging problem in the free surface flow, because dealing with large deformation fluid. The present paper was carried out numerical sloshing prismatic tank that resemble LNG membrane type carrier. Pressure sensor used to validate dynamic pressure low filling ratio tank. Forced oscillation motion sway f = 1.08 Hz and amplitude 6.52 mm. A single, double vertical baffles are...

This study attempted to fill epoxy, a widely used industrial material, with pumice, cheap volcanic rock, in order form composite material. The objective was evaluate the worth of pumice and improve mechanical properties epoxy. Composite samples no filler, 10%, 20%, or 30% filler were produced. An ultrasonic mixer during manufacture made sure powder dispersed properly, vacuuming stopped air pock...

In order to solve the problem of insufficient supply aggregate for cemented filling material, experimental research on mix ratio material using construction waste as recycled coarse was carried out. A ternary quadratic regression model created Box-Behnken design (BBD) based response surface methodology (RSM), slump, bleeding ratio, and 28 d uniaxial compressive strength variables, model’s accur...