模糊限制语对大学英语教师课堂用语的影响

大学英语教师的课堂用语不仅是传递知识的工具,也是维系和调节师生关系的纽带。教师在课堂上使用什么样的语言影响学生参与课堂教学的积极性。文章试图从语用学的角度探讨模糊限制语对大学英语教师课堂用语的启发意义,以期能激发学生参与课堂互动,产生良好的教学效果。     

MIMO-OFDM 系统中同信道干扰抑制

针对 MIMO-OFDM 系统,提出了一种最大后验概率的信道矩阵和干扰协方差矩阵估计方法,并设计了迭代求解算法。利用所估计的信道矩阵和干扰协方差矩阵,采用 IRC 接收机完成同信道干扰的抑制。利用干扰协方差阵的共轭对称与半正定等特性,提出2种干扰协方差矩阵的处理方案以提高其估计精度。第1种方案将每个子载波上干扰协方差矩阵表征为一系列时域矩阵之和,第2种方案将每个子载波上的干扰协方差矩阵用低阶模型来建模,其中模型阶数通过最小描述长度算法估计。仿真结果表明了所提方案的有效性。     

基于MATLAB的赫尔默特方差分量估计法实现

本文通过对赫尔默特方差分量估计法的理论、模型和算法的研究,应用MATLAB平台,使用MATLAB语言编写程序,开发出通用的模块,制作可视化界面,操作简单,减少了测绘工作的内业工作量,提高了工作效率,并可作为其他平差问题编程的参考,此模块具有极高的实际意义和应用价值。     

Critical thinking as room for subjectification in Education for Sustainable Development

Issues of sustainability are complex and often steeped with ethical and political questions without predefined or general answers. This paper deals with how secondary and upper secondary teachers discuss these complex issues, by analysing their aims for Education for Sustainable Development. With inspiration from discourse theory, their articulations about students as political subjects are analysed. Critical thinking emerged as a nodal point in teachers’ discussions. In this study, critical thinking is articulated as having various qualitative meanings related to different epistemological views. On one hand, critical thinking is articulated to invite room for subjectification; but on the other hand, room for subjectification is challenged when critical thinking is articulated through the educational aims of qualification and socialisation. A consequence of changing epistemological view might be that political and ethical issues take a back seat.     

简析有效课堂教学

富有成效的英语堂教学是高校英语教育的关键。课堂教学中需要充分发挥教师与学生的主观能动性,使教师能够采用多种教学管理手段吸引学生的注意力,激发学生的学习积极性,从而使学生能够主动参与到课堂教学活动中,进而提高语言应用能力与自身素养。教师与学生的协作互动有利于课堂教学的开展。教师在课堂教学活动中应当及时辨识与合理把控学生的身心状态,使学生能够在教师的引导下积极有效开展课堂英语学习。     

Functions of“Marriage”in Shakespeare’s Measure for Measure

Marriage is usually associated with happiness and harmony. But in Shakespear’s Measure for Measure, it seems it is in?fused with power of law. Is it a clear-cut punishment or reward? Its qualities revo...     

浅谈物理教学中布白艺术的现实依据、功能与创生策略

物理教学布白艺术是指在物理课堂教学中教师故意留给学生空间和余地,它的产生有深刻的文化经验、生活经验和心理经验基础。在物理教学中恰当运用布白艺术可以发展学生思维能力、激发学生求知欲、愉悦学生心灵。初中物理教学布白艺术创生策略包括：省略、质疑、停顿和暗示,教师在教学过程中灵活运用布白艺术创生策略,可以达到良好的教学效果。     

Friendship Tied with the Milky Way

<正>"The MPG-CAS Partner Group led by Prof.HAN Jinlin from the Nationa Astronomical Observatories of China(CAS)has achieved great success in the determination of the magnetic fields o the Milky Way.The basis of this success was a cryogenic receiver with a polarim eter that was installed in China at the25m Nanshan Radio Telescope of the Urumqi Observatory.The receiver was a copy of a system installed in the 100m Effelsberg radio telescope of the Max Planck Institute for Radio Astronomy in Bonn,Germany.A very lively exchange of researchers at all levels took place.On     

乡宁方言惯用语的构成形式及语法功能

乡宁县位于山西省西南,临汾市西隅,吕梁山南端,乡宁方言属于中原官话汾河片,不仅语音、词汇、语法富有特点,语汇也有特色.     

反三角函数是怎样产生的？

三角函数学了正弦、余弦和正切,没学余切、正割和余割;更没学反三角函数了!这就是今年某些大专新生在初等数学方面的薄弱之处;读懂本文后,新生们一定能有所弥补,在进校后的高等数学学习中扎实地迈进一大步。