Mackey - glass ( mg ) chaotic time series is one of benchmark problems in nonlinear time series forecast , which is representative Mackey - glass ( mg )混沌时间序列具有非线性特性,是时间序列预测问题中的基准问题之一,具有代表性。
This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies . the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna , and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method 在综合前人工作基础上,本文对时域有限差分( fdtd )法及其在开关电源辐射电磁场数值计算中的应用进行了系统的分析和研究,其核心内容包括:伪低频电磁场数值计算中pml吸收边界条件性能的研究;基于基准问题?电偶极子天线三维辐射电磁场,验证了本文构造的基于pml吸收边界条件的三维fdtd法及其计算软件,并应用于高频开关电源辐射电磁场的数值分析;提出了一种改进的交替方向隐格式时域有限差分法。
In these two experiments , it includes test scheme . outer precision estimation , inner precision estimation . the data collecting is in accordance with ii order leveling measuring and ii order distance network . these two experiments test the reasonable of datum consistency and the method of mean gap building deformation model 该实验验证了对于基准问题的分析和平均间隙法对位移量的探测情况;在水平位移变形监测网的实验中,数据采集按二等测边网测量精度进行,证实了用平均间隙法判断稳定点,进而确定变形模型的合理性。
基准: datum standard; criterion; r ...问题: question; problem标准问题: standard issues几何准问题: problem of geometrical construction瞄准问题: pointing problem评价水准问题: benchmark problem多式联运集装箱标准问题政府间小组: intergovernmental grouon container standards for intermodal transport; intergovernmental group on container standards for intermodal transport茶叶出口国配额分配和最低出口标准问题会议: meeting of tea-exporting countries on quota allocation and minimum export standards基准: 1.[测量学] (测量时的起算标准) datum2.(泛指标准) standard; criterion; reference; basic standard◇基准点 reference point; datum point; 基准色 reference colours问题: 1.(需回答的题目) question; problem 解答问题 solve a problem; 提问题 ask a question2.(需研究解决的矛盾等) problem; matter 问题的关键 the heart of the matter; key to the question; key to the solution of a question; 问题的实质 essence of the problem [question]; 问题成堆 a satchel [a batch] of questions; 难问题 a troublesome problem; 共同关心的问题 questions of common interest; 关键问题 a key problem; 思想问题 an ideological problem; 悬而未决的问题 an outstanding issue; 原则问题 a question of principle; a matter of principle; 枝节问题 minor issue3.(事故或意外) trouble; mishap; sth. wrong 解决麻烦问题的能手 trouble shooter; 没出什么问题 without any mishap; 那机器有点问题。 something is wrong with the machine.4.(重要之点) the point; the thing 问题不在这里。 that is not the point 基准;基准面: datum基准的基准: reference of reference基准线;基准面: datum linedos基准: dos based / versiont基准点: t t reference point板基准: panel fiducial标准,基准: standard副基准: secondary standard seawater干基准: dry basis基准(器): primary standard基准,基础: basis基准;基面: datum基准白: normalizing white; white reference基准板: datum plate; reference plate基准臂: reference arm