特里·安德森教授是加拿大国家远程教育研究会(Canada Research Chair in Distance Education)主席,国际新一代远程教育研究者的杰出代表。他在远程教育和教育技术领域涉猎广泛、成果颇丰。本文对他提出的远程教育教学中的6种...特里·安德森教授是加拿大国家远程教育研究会(Canada Research Chair in Distance Education)主席,国际新一代远程教育研究者的杰出代表。他在远程教育和教育技术领域涉猎广泛、成果颇丰。本文对他提出的远程教育教学中的6种教学交互理论、在线学习模型、探究社区和等效交互原理等关于远程教育的理论建树进行了剖析,介绍了他参与和主持的远程教育重要项目以及他培养远程教育硕士的方法。最后,对他的理论和实践作了综合评价并提出了其对中国远程教育发展的几点启示。展开更多
A decorated lattice is suggested and the Ising model on it with three kinds of interactions K1, K2, and K3 is studied. Using an equivalent transformation, the square decorated Ising lattice is transformed into a regul...A decorated lattice is suggested and the Ising model on it with three kinds of interactions K1, K2, and K3 is studied. Using an equivalent transformation, the square decorated Ising lattice is transformed into a regular square Ising lattice with nearest-neighbor, next-nearest-nelghbor, and four-spin interactions, and the critical fixed point is found at K1 = 0.5769, K2= -0.0671, and K3 = 0.3428, which determines the critical temperature of the system. It is also found that this system and the regular square Ising lattice, and the eight-vertex model belong to the same universality class.展开更多
文摘特里·安德森教授是加拿大国家远程教育研究会(Canada Research Chair in Distance Education)主席,国际新一代远程教育研究者的杰出代表。他在远程教育和教育技术领域涉猎广泛、成果颇丰。本文对他提出的远程教育教学中的6种教学交互理论、在线学习模型、探究社区和等效交互原理等关于远程教育的理论建树进行了剖析,介绍了他参与和主持的远程教育重要项目以及他培养远程教育硕士的方法。最后,对他的理论和实践作了综合评价并提出了其对中国远程教育发展的几点启示。
基金The project supported by the Natural Science Foundation of Xiaogan University and the Science Foundation of Qufu Normal University
文摘A decorated lattice is suggested and the Ising model on it with three kinds of interactions K1, K2, and K3 is studied. Using an equivalent transformation, the square decorated Ising lattice is transformed into a regular square Ising lattice with nearest-neighbor, next-nearest-nelghbor, and four-spin interactions, and the critical fixed point is found at K1 = 0.5769, K2= -0.0671, and K3 = 0.3428, which determines the critical temperature of the system. It is also found that this system and the regular square Ising lattice, and the eight-vertex model belong to the same universality class.