Currently, many college students watch American TV series to study English and some American TV Series resources have been ushered to the college English class. This research commences from studying a class of Shangha...Currently, many college students watch American TV series to study English and some American TV Series resources have been ushered to the college English class. This research commences from studying a class of Shanghai Normal University,Tianhua College, aiming to explore advantages and disadvantages of American TV series when it is used as English learning resources. It is implied that when it comes to teaching college English based on American TV series, the teacher should select high quality video materials in advance, guide students to form rational cultural exchange values. Furthermore, when playing the American audio-visual materials, the teacher must illustrate key language points and help students to absorb and review them for the sake of better learning effects of the students.展开更多
A homotopy analysis method(HAM)is presented for the primary resonance of multiple degree-of-freedom systems with strong non-linearity excited by harmonic forces.The validity of the HAM is independent of the existenc...A homotopy analysis method(HAM)is presented for the primary resonance of multiple degree-of-freedom systems with strong non-linearity excited by harmonic forces.The validity of the HAM is independent of the existence of small parameters in the considered equation.The HAM provides a simple way to adjust and control the convergence region of the series solution by means of an auxiliary parameter.Two examples are presented to show that the HAM solutions agree well with the results of the modified Linstedt-Poincar'e method and the incremental harmonic balance method.展开更多
文摘Currently, many college students watch American TV series to study English and some American TV Series resources have been ushered to the college English class. This research commences from studying a class of Shanghai Normal University,Tianhua College, aiming to explore advantages and disadvantages of American TV series when it is used as English learning resources. It is implied that when it comes to teaching college English based on American TV series, the teacher should select high quality video materials in advance, guide students to form rational cultural exchange values. Furthermore, when playing the American audio-visual materials, the teacher must illustrate key language points and help students to absorb and review them for the sake of better learning effects of the students.
基金supported by the Fundamental Research Funds for the Central Universities(No.N090405009)
文摘A homotopy analysis method(HAM)is presented for the primary resonance of multiple degree-of-freedom systems with strong non-linearity excited by harmonic forces.The validity of the HAM is independent of the existence of small parameters in the considered equation.The HAM provides a simple way to adjust and control the convergence region of the series solution by means of an auxiliary parameter.Two examples are presented to show that the HAM solutions agree well with the results of the modified Linstedt-Poincar'e method and the incremental harmonic balance method.