Contextual Cognitive Theory （CCT） is the latest teaching and learning theory in west countries, which reveals the nature of knowledge in a new perspective as well as the conditions of meaningful learning. The concep...Contextual Cognitive Theory （CCT） is the latest teaching and learning theory in west countries, which reveals the nature of knowledge in a new perspective as well as the conditions of meaningful learning. The concept based on CCT corresponds to the principles proposed by the new curriculum standard for English. Therefore, it has great implications for the reform of English teaching in the classroom. In this paper, the author gives a brief account of the main points of CCT, and then, she discusses its pedagogical implications for the construction of new teaching strategies in the classroom through designing and analyzing teaching cases.展开更多
Based on the principle of FBG sensing mechanism,an alternating current sensor system,which uses a FBG attached on a magnetostrictive rod as the probe,was developed.A dynamic interrogation method was proposed based on ...Based on the principle of FBG sensing mechanism,an alternating current sensor system,which uses a FBG attached on a magnetostrictive rod as the probe,was developed.A dynamic interrogation method was proposed based on wide band light source,by making use of the linear relationship between its power intensity and wavelength as spectrum filter.A 50 Hz AC signal is interrogated successfully through the developed system and the system transfer function was established.The amplitude and frequency of the AC signal to be measured can be well deduced through the transfer function of the system, so the alternating current measurement is accomplished.展开更多
文摘Contextual Cognitive Theory （CCT） is the latest teaching and learning theory in west countries, which reveals the nature of knowledge in a new perspective as well as the conditions of meaningful learning. The concept based on CCT corresponds to the principles proposed by the new curriculum standard for English. Therefore, it has great implications for the reform of English teaching in the classroom. In this paper, the author gives a brief account of the main points of CCT, and then, she discusses its pedagogical implications for the construction of new teaching strategies in the classroom through designing and analyzing teaching cases.
文摘Based on the principle of FBG sensing mechanism,an alternating current sensor system,which uses a FBG attached on a magnetostrictive rod as the probe,was developed.A dynamic interrogation method was proposed based on wide band light source,by making use of the linear relationship between its power intensity and wavelength as spectrum filter.A 50 Hz AC signal is interrogated successfully through the developed system and the system transfer function was established.The amplitude and frequency of the AC signal to be measured can be well deduced through the transfer function of the system, so the alternating current measurement is accomplished.
