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According to the transmission line theory, we proposed the metrology method of S 11 phase parameter. The theoretical method has been proved based on the experiments of standard mismatches, Open kit, short kit, air lines and other device. The experiment also find out the law of error distribution, which is that the error's absolute value has negative relationship with the magnitude of reflection coefficient,...
This paper stands on the perspective of smart grid and smart electricity needs, presenting the concept of distributed power, making depth study on two levels of “Plug and Play” device information exchange and “Plug and Play” management technology after that. Firstly, the paper presents status of research studies at home and abroad. On this basis, for different forms of distributed power access, the...
National Institute of Metrology China (NIM) has studied and developed the facilities for spectral total radiant flux (STRF) measurement and provides related calibration services. The array-based goniospectroradiometers and an integrating sphere system have been setup. The former is used to realize the scale of the STRF, and the latter is used to implement everyday calibration service due to its fast...
Based on the method of experimental economics, this paper tests the effect of budget constraint strength on investor risk preference by 4 static experiments and 4 dynamic experiments. The results indicated that the soft budget constraint improved the degree of investors' risk preference. With the increase of budget constraint intensity, the ratio of risk avoidance is reduced. On the other hand, duration...
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