This paper studies the phase effect in mode coupling of Kelvin-Helmholtz instability in two-dimensionalincompressible fluid.It is found that there is an important growth phenomenon of every mode in the mode couplingpr...This paper studies the phase effect in mode coupling of Kelvin-Helmholtz instability in two-dimensionalincompressible fluid.It is found that there is an important growth phenomenon of every mode in the mode couplingprocess.The growth changes periodically with phase difference and in the condition of our simulation the period is about0.7π.The period characteristic is apparent in all stage of the mode coupling process,especially in the relatively laterstage.展开更多
At present, a new teaching model - Project Approach rises in English education. Project teaching is a student-centered, inquiry-centered practice, with project activities centered learning model. Project teaching stud...At present, a new teaching model - Project Approach rises in English education. Project teaching is a student-centered, inquiry-centered practice, with project activities centered learning model. Project teaching students focus on learning strategies to help students become independent learners, to improve students＇ motivation to help students learn practical ability, communication skills, collaboration skills, creative thinking skills and the ability to solve practical problems. Project-based learning in the late 1990s was introduced in China. Within ten years, research project studying abroad connotation, significance and theoretical foundation, extension are applied research to classroom practice. However, most of the research object of the project is teaching primary and secondary students, higher education, adult education and general higher education students in science and engineering students. Research related to the field of English teaching is not much; the theory is applied to the case of teaching practice rarely. Therefore, this article introduced the project teaching college English classroom, through the implementation of the teaching aims to stimulate the enthusiasm of the students, so that students learn more explicit goals, enhance self- confidence and motivation to learn, to develop their creativity, initiative and independent learning and the purpose of learning ability.展开更多
基金Supported by the National Basic Research Program of China under Grant No.2007CB815100the Research Fund for the Doctoral Program of Higher Education of China under Grant No.20070290008the National Natural Science Foundation of China under Grant Nos.10775020 and 10874242
文摘This paper studies the phase effect in mode coupling of Kelvin-Helmholtz instability in two-dimensionalincompressible fluid.It is found that there is an important growth phenomenon of every mode in the mode couplingprocess.The growth changes periodically with phase difference and in the condition of our simulation the period is about0.7π.The period characteristic is apparent in all stage of the mode coupling process,especially in the relatively laterstage.
文摘At present, a new teaching model - Project Approach rises in English education. Project teaching is a student-centered, inquiry-centered practice, with project activities centered learning model. Project teaching students focus on learning strategies to help students become independent learners, to improve students＇ motivation to help students learn practical ability, communication skills, collaboration skills, creative thinking skills and the ability to solve practical problems. Project-based learning in the late 1990s was introduced in China. Within ten years, research project studying abroad connotation, significance and theoretical foundation, extension are applied research to classroom practice. However, most of the research object of the project is teaching primary and secondary students, higher education, adult education and general higher education students in science and engineering students. Research related to the field of English teaching is not much; the theory is applied to the case of teaching practice rarely. Therefore, this article introduced the project teaching college English classroom, through the implementation of the teaching aims to stimulate the enthusiasm of the students, so that students learn more explicit goals, enhance self- confidence and motivation to learn, to develop their creativity, initiative and independent learning and the purpose of learning ability.
