the taguchi method was applied as an experimental design to determine optimum conditions for colour removal from azo dyes solutions containing remazol yellow g by electrocoagulation (ec) using iron and steel electrodes as anode and cathode, respectively. an orthogonal array (oa9) experimental design that allows to investigation the simultaneous variations of four parameters (initial remazol ye...

The chemical regeneration of granular activated carbon exhausted in a petrochemical wastewater unit was investigated. Gas chromatography and energy-dispersive X-ray spectroscopy demonstrated that spent activated carbon carries large types of organic and inorganic materials. Diverse chemical solvents were adopted in comparison with traditional chemical solvents and regeneration efficiency was in...

In the continuous-time domain, Maximum-Likelihood (ML) detection of a chirp signal in white Gaussian noise can be done via the line-integral transform of the classical Wigner distribution. The line-integral transform is known variously as the Hough transform and the Radon transform. For discrete-time signals, the Wigner-type distribution defined by Claasen and Mecklenbrauker has become popular ...

This paper discusses in detail the theory of nonoptimum analysis on risk management systems. It points out that the main problem of exploring an indefinite system’ optimum lies in the lack of non-optimum analysis on the risk management system. The paper establishes the syndrome and empirical analysis based on the non-optimum category of the risk. At the same time, through the concept of interve...

For contents delivery systems such as video-ondemand service, an optimum design is presented to maximize the utility of the system with priority classes. The willingness-to-pay (WTP) is introduced for a measure of utility, and the optimum design is discussed to maximize the utility (revenue). For the system with two priority classes, the optimum condition is given in terms of the traffic load, ...