菲涅耳反射公式及反射光与入射光的位相关系

从菲涅耳反射公式的推导过程入手，确定了反射光的电矢量相对于入射光的电矢量x分量及y分量的位相和取向之间的一一对应关系。振幅反射率rpx和rpy的正负，真实地反映反射光中相应电矢量分量相对于入射光的电矢量的位相变化和方向。     

Effects of praseodymium doping on thermoelectric transport properties of CaMnO3 compound system

The rare earth Pr doped Ca1-x Prx MnO3(x=0,0.06,0.08,0.1,0.12,and 0.14) compound bulk samples were prepared to study the effect of Pr doping on thermoelectric transport properties of CaMnO3 compound system.The doped samples exhibited single phase composition within the experimental doping range,with condensed bulk microstructure and small porosities.The electrical resistivity was remarkably reduced for doped samples,on account of the enhanced carrier concentration;the absolute value of Seebeck coefficient was deteriorated mainly due to enhanced electron carrier concentration.The electrical performances of the doped samples reflected by resistivity and Seebeck coefficient fluctuations were optimistically tuned,with an optimized power factor value of 0.342 mW/(m·K2) at 873 K for x=0.08 sample,which was very much higher comparing with that of the un-doped sample.The lattice thermal conduction was really confined,leading to distinctly repressed total thermal conductivity.The thermoelectric performance was noticeably improved by Pr doping and the dimensionless figure of merit ZT for the Ca0.92 Pr0.08 MnO3 compound was favorably optimized with the maximum value 0.16 at 873 K.     

关于刚体力学内容教学教法探讨

针对多数学生认为刚体力学难学，刚体运动规律不易掌握等问题，结合本人多年的教学体会给出几种教学方法。     

理论力学中几个易混的概念

理论力学是理、工科学生的一门重要的技术基础课,它在日常生活和工农业生产中有着广泛的应用。然而要较好地掌握它那高度抽象的概念,并非易事。本文提出了理论力学中几个容易搞混的概念,并做了详细地讨论,以提醒学生注意,澄清概念,牢固正确地掌握所学理论。     

理论力学中几个易混的概念

理论力学是理、工科学生的一门重要的技术基础课，它在日常生活和工农业生产中有着广泛的应用。然而要较好地掌握它那高度抽象的概念，并非易事。本文提出了理论力学中几个容易搞混的概念，并做了详细地讨论，以提醒学生注意，澄清概念，牢固正确地掌握所学理论。     

波束模拟法用于粗糙面散射问题的有效性分析

波束模拟方法可用于数值计算宽波束入射，或略入射的粗糙面散射问题，减少所需计算机内存。通过引入能量守恒测度系数和矩量法，以平面理想导体和随机粗糙面为例详细地研究了波束模拟方法在数值计算散射问题时，其计算的精度与入射波束的极化状态、子波束参数和散射面粗糙度之间关系。