工商管理本科应用案例教学法存在的问题及建议

案例教学是一种主要在工商管理教育领域中的MBA层次得到成功应用的方法。由于工商管理本科的培养目标与MBA培养高级管理人才的目标存在差异，所以要在本科教学中应用案例教学，首先必须明确界定其地位与作用，在此基础上才能通过构建成熟、完善的教学规范与教法体系，逐步解决在实践中遇到的具体问题。     

单片机新教学方法之探讨

单片机是一门实践性较强的课程。多年来，大家一直在不断探讨如何使学生更好地掌握并运用单片机。本文介绍一种新教学方法来提高单片机的教学质量，即将单片机的知识点按照多种要素划分为若干个知识模块，再以任务驱动的方式适当地引导学生综合运用知识。     

案例程序教学法在VB教学中的应用

程序设计严谨又枯燥,实用又难学,如何提高这类课程的教学质量和教学效果,找到一种既符合学生认知规律,又能切实提高学生学习兴趣和实践应用能力的教学方式,是摆在每一位从业教师面前的重要课题。笔者在讲授VB课程时用案例程序教学法做了有益的探索和尝试,收到了良好的效果。文章就案例程序教学法及其教学过程设计做了较为详细的介绍。     

Some remarks concerning stability for nonstationary quantum systems

The problem of characterizing stability and instability for general nonstationary quantum systems is investigated. Some characterizations are reported and some elementary properties of a topological characterization are established. Then, it is proven, by considering a simple example, that there are nonperiodic driven systems whose orbits are neither precompact nor leave on average any compact set. Autocorrelation measures are computed and the possible roles of the generalizes quasienergy operator and energy growth are briefly discussed.     

新型冠状病毒检测以及相关药物研发中的基础药学知识

Abundant basic pharmaceutical knowledge is involved in the detection of SARS-CoV-2 and the discovery and development of antiviral drugs. This paper gives detailed summary and provides rich materials for case teaching.     

A new positive‐definite regularization of incompressible Navier–Stokes equations discretized with Q1/P0 finite element

A new regularization method is proposed for the Galerkin approximation of the incompressible Navier–Stokes equations with Q1/P0 element, by newly introducing a square‐type linear form into the variational divergence‐free constraint regularized with the global pressure jump (GPJ) method. The addition of the square‐type linear form is intended to eliminate the hydrostatic pressure mode appearing in confined flows, and to make the discretized matrix positive definite and then non‐singular without the pressure pegging trick. Effects of the free parameters for the regularization on the solutions are numerically examined with a 2‐D driven cavity flow problem. Furthermore, the convergences in the conjugate gradient iteration for the solution of the pressure Poisson equation are compared among the mixed method, the GPJ method and the present method for both leaky and non‐leaky 3‐D driven cavity flows. Finally, the non‐leaky 3‐D cavity flows at different Re numbers are solved to compare with the literature data and to demonstrate the accuracy of the proposed method. Copyright © 2003 John Wiley & Sons, Ltd.     

间接驱动的冲击波特性实验

报道在星光激光器上进行的X光辐射驱动(间接驱动)和激光直接驱动的冲击波实验。实验观察到了铝背冲击波发光信息。结果表明,间接驱动比直接驱动的冲击波平面性好。     

超高速炸药加速器炮口弹丸速度的测量

炸药驱动器超高速(>3000m/s)弹丸速度的测量是超高速发生器及超高速碰撞现象研究等领域内一个必不可少的环节,本文在传统电测法及X光闪先照相技术的基础上,提出了改进的测量技术,使测量中尽量避免各种因素对测试的干扰,成功地获得了弹丸的炮口速度。实验表明,该技术为超高速驱动器及超高速撞击现象研究提供了一种可靠而方便的测试手段。     

双波荡器自由电子激光理论

给出了双波荡器自由电子激光器的通用理论.在双波荡器自由电子激光器中,引入了一个周期长度非常接近主波荡器中电子束感应加速振荡周期的附加波荡器.推导出了一套自治方程组描述双波荡器中自由电子激光场演变过程,并分别给出了低增益、高增益和饱和三种情况下的解析解.研究表明,适当选择附加波荡器的参数,可以提高自由电子激光器的增益或转换效率