a class of stiffly stable k-step second derivative methods of order 2k 1阶刚性稳定的二阶导数方法
method of order tracking filtering of rotating machinery based on zero-phase distortion digital filtering with segmentation overlap 基于分段重叠零相位滤波的阶比跟踪滤波法
(3 ) we bring bdf method of order two forward as time discrete method for the two-dimension three-temperature heat conduction equations (3)提出使用二阶bdf方法作为二维三温热传导方程的时间离散化方法。
theoretical analysis and numer-ical experiments show that bdf method of order two is indeed superior to the commonly used backward euler method and crank-nicolson scheme 理论分析和数值试验表明该方法明显优于以往常用的向后euler法及grank-nicolson格式。
through case study on the ordering in a university ( which is classified as a danwei, or a workplace ), this paper puts emphasis upon discussing the methods of order construction of the members of the danwei in china city 本文以中国一家高校作为分析的个案,着重探讨了中国城市单位里的人建构单位内在秩序的方法,分析了单位法秩序的形成和实施过程中展现出来的行动特征,试图以此案例解释中国法律现代化过程中面临的执法困境问题。