论高职体育教学中学生自主锻炼能力的培养

高职学校体育教学中通过改进教学方法,在“教”与“学”的相互作用下充分调动学生的积极性、主动性、创造性,提高课堂教学质量。教学过程中始终遵循“以教师为主导,以学生为主体,以训练为主线”的思想,最终目的是培养学生自主学、锻炼的能力,让学生成为教学活动中真正的主人。     

The 50 nm-thick yttrium iron garnet films with perpendicular magnetic anisotropy

Yttrium iron garnet (YIG) films possessing both perpendicular magnetic anisotropy (PMA) and low damping would serve as ideal candidates for high-speed energy-efficient spintronic and magnonic devices. However, it is still challenging to achieve PMA in YIG films thicker than 20 nm, which is a major bottleneck for their development. In this work, we demonstrate that this problem can be solved by using substrates with moderate lattice mismatch with YIG so as to suppress the excessive strain-induced stress release as increasing the YIG thickness. After carefully optimizing the growth and annealing conditions, we have achieved out-of-plane spontaneous magnetization in YIG films grown on sGGG substrates, even when they are as thick as 50 nm. Furthermore, ferromagnetic resonance and spin pumping induced inverse spin Hall effect measurements further verify the good spin transparency at the surface of our YIG films.     

排舞运动对不同年龄段女性健身效应研究

排舞是当代社会较为流行的一种舞蹈形式.适合不同人群,尤其是不同年龄段的女性.文章分析了排舞的基本概念与特征,通过比较分析法、年龄分析法以及一定调查实验的基础上,分3个年龄段：少年、青年、中老年,对排舞运动对不同年龄段女性健身效应进行分析归纳,以期促进排舞运动的普及,对女性的身心健康起到积极意义.