Cultivate Critical Thinking Ability via Students’ Presentations in College English Classes

In the new era when demands for flexible intellectual skills are increasing,strengthening the cultivation of critical thinking ability of students has become one of the key purposes of higher education.This paper intends to discuss how to cultivate students’critical thinking ability through English classroom presentations.It points out that during the whole process,teachers’guidance plays an indispensable role.Only when both teachers and students are aware that classroom presentations are a golden opportunity for the cultivation of students’critical thinking ability and carry this awareness into their English classes,can English presentations be brought into full play.

Vocabulary Teaching in College English Based on the Wholeness Principle of Gestalt Theory

Vocabulary teaching is always a difficulty to English teachers while learners have found the task of accumulating vocabulary time-consuming,boring,and ineffective.This paper intends to explain vocabulary teaching and learning based on the wholeness principle of Gestalt Theory,which emphasizes the wholeness of experience and behaviors.It points out that without an organic whole,the learning process will be incomplete and ineffective.The process of learning is not the accumulation of piecemeal examination of the isolated elements.It is anticipated that the efficiency of classroom teaching and learning can be improved.

铁基软磁复合材料的SiO_(2)包覆研究进展

软磁复合材料在诸多领域有着重要的应用,随着技术的发展,对软磁复合材料的性能要求也在不断提高中。为了满足在高频率和高功率工况下的应用需求,需要开发低损耗、高磁导率的软磁复合材料。SiO_(2)作为绝缘包覆介质具有高电阻率和高热稳定性,能够通过多种方法包覆在磁粉颗粒上,因此在新型软磁复合材料开发领域得到广泛的应用。总结了溶胶凝胶法、化学液相沉积法、反相微乳法、化学气相沉积法、双层包覆法和改性树脂包覆法在铁基软磁复合材料的SiO_(2)绝缘包覆上的应用,归纳了上述各绝缘包覆方法的特点,并按其特点进行了分类,指出了当前SiO_(2)绝缘包覆面临的一些问题,并对未来绝缘包覆方法的发展进行了展望。

College English Listening and Speaking Teaching Guided by Memetics

Memetics confirms the importance of recitation and imitation in college English teaching.Starting with the explanation of the replication cycle of language memes,this paper discusses how to use the memetic perspective in college English listening and speaking teaching,effectively transform the input language information into language output,and improve the classroom effect of college English listening and speaking teaching.

磷化工艺对FeSiCr软磁复合材料磁性能的影响

采用锌锰磷化液对FeSiCr合金粉末进行表面改性处理,通过振动样品磁强计、阻抗分析仪和软磁材料交流测试装置分析锌锰磷化液浓度对FeSiCr磁粉饱和磁化强度、FeSiCr磁粉芯有效磁导率和功率损耗的影响。结果表明,随着锌锰磷化液浓度的增加,样品的饱和磁化强度逐渐减小,功率损耗先减小后增大。当锌锰磷化液浓度为25%时,有效磁导率为39.5,功率损耗仅为103.6 W·kg^(-1)(100 kHz,50 mT)。

FeSiCr软磁复合材料研究进展

全球信息化、网络化、数字化发展进程的不断提速促进了电子技术的快速进步。集成化、小型化、高功率化成为当前市场对电子器件的新诉求,新型一体成型电感以其体积小、损耗低、抗腐蚀、可靠性高的特点迅速占据电子市场份额。FeSiCr软磁复合材料具有高电阻率、高饱和磁感、高电感量、优异的直流叠加特性、良好的温度稳定性及不易生锈和高性价比等优点受到广泛的关注,FeSiCr软磁复合材料已成为一体成型电感的理想用材。主要从FeSiCr合金成分设计、粉末制备工艺、绝缘包覆改性、粉末压制成型及材料的后续热处理等方面,对FeSiCr软磁复合材料的最新研究进展进行了梳理总结,希望为获得具有更优综合性能的FeSiCr软磁复合材料的深入研究和广泛应用提供参考。