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The potential of Fourier transform infrared spectroscopy (FTIRS) combined with chemometrics for its ability to fast determine the total flavonoids content of rape bee pollen was studied. A total of 25 rape bee pollen samples were investigated for FTIRS on the wavenumber between 7800 and 350 cm-1. Direct orthogonal signal correction (DOSC) was performed to preprocess the original spectra data. Partial...
In order to teach college freshmen more conveniently, we have formulated a questionnaire to investigate the computer basic knowledge they had got in secondary schools. This paper measures and analyzes the reliability and validity of that questionnaire by the technology of education measurement. The result indicates that the questionnaire has a good internal consistency; and its distinction validity,...
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