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To develop an on-line pH sensor for acidic environment application, a tantalum pentoxide (Ta2O5) based electrolyte-ion sensitive membrane-oxide-semiconductor (EIOS) pH sensor has been prepared and investigated by applying electrochemical impedance spectroscopy (EIS) and capacitance-voltage method (C-V). Nernstian behavior toward variable proton concentrations (∼56.19mV/pH) in the pH range from 1 to...
In this paper, we present an improved approach of indoor location using Wireless Local Area Network. To reduce the influence from multi-path interference, we used a max filter to preprocess the original received signal strength indications. We also used a more conformable distribution to substitute the standard Gaussian distribution in indoor location system. Our experiments results show that the...
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