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Cloud computing is becoming popular as the next infrastructure of computing platform. However, with data and business applications outsourced to a third party, how to protect cloud data centers from numerous attacks has become a critical concern. In this paper, we propose a clusterized framework of cloud firewall, which characters performance and cost evaluation. To provide quantitative performance...
This paper presents a control method for charging a battery as well as for controlling a fuel cell in a battery-fuel cell hybrid system. Due to the slow start up time of a PEM fuel cell it must be augmented by an alternative source to meet the fluctuation of power demands. This paper presents a hybrid fuel cell and battery system to serve a load. Additionally, based on the State of Charge (SOC) of...
Readout noise of RF impedance analyzer and LCR meter are observed and analyzed with narrow bandwidth noise theory. The difference between theory analysis and actual measurement results is shown. The effect of impedance measurement format on noise is discussed at last.
The effect factors of adsorption treatment of methylene blue (MB) solution by aged-refuse were studied with static absorption method under different conditions. In the meantime, Langmuir and Freundlich isotherm equation, pseudo-first order and pseudo-second order kinetics models were fitted. The results showed: when the initial concentration of MB solution is 10mg·L−1, the best parameters as follows:...
The performance of dynamic adsorption and the effects of height of filler, MB initial concentration and flow rate on the breakthrough curves were investigated by the dynamic adsorption experiment of the filler column. The results showed: Aged-refuse can effectively adsorb MB in the water, with the increase of filler height, the breakthrough point in the curve move toward the right and the breakthrough...
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