一类含参广义变分不等式组的灵敏性分析   总被引：1，自引：0，他引：1  

谭满益 《赣南师范学院学报》2001,(6):6-9

本文应用新的方法研究了一类含参广义变分不等式组解的灵敏性 ,得到了一些新的结果 .  相似文献   

Transient Responses of Flexible Non—uniform Spinning Shaft with Nonlinear and Asymmetric Supports     

ZHUHuai－liang 《上海大学学报(英文版)》2001,5(1):35-39

In this paper ,a hybrid approach was developed to investigate the transient responses of a multi-span non-uniform flexble spinning shaft with nonlinear and asymmetric supports.The non-uniform spinning shaft with variable parmeters was modeled as a Bernoulli-Euler beam column with sectional constant cross-section properties by the finite element method.The supporting stiffness behavior of the nonlinear supports was described as a piecewise-linear and asymmetric model.The equations of motion in the matrix form of a multi-span non-uniform spinning shaft with nonlinear and asymmetric supports were formulated using Hamilton‘s principle and the assumed mode method.As an example,a spinning rocket with many variable stiffness supports was numerically simulated by the direct integration method.The transient response and dynamic behavior of this rotate-dynamic system are analyzed.  相似文献   

NTM方法在非线性贝叶斯动态模型中的应用     

高汝召  边平勇  赵衍才 《周口师范学院学报》2007,24(5):37-39

将NTM方法应用于非线性贝叶斯动态模型，给出了它的递推公式以及随机变量的数字特征的计算，与蒙特卡洛方法相比提高了效率和精度.  相似文献   

非线性常差分方程守恒量的计算     

高敏 《闽江学院学报》2006,27(2):22-24

给出了计算非线性常差分方程守恒量的一种方法,利用此方法可计算出非线性振动方程差分格式的守恒量．  相似文献   

形变映射方法和非线性WBK方程的研究     

何宝钢  张解放 《商丘师范学院学报》2004,20(2):14-19

拓展了形变映射方法，以非线性WBK水波方程为例，获得系统丰富的解析解，包括孤波解，周期波解，雅可比椭圆函数解和其他精确解．  相似文献   

用拉压不同模量理论计算支座移动引起的超静定结构内力     

姚文娟  叶志明 《上海大学学报(英文版)》2004,8(3)

For statically indeterminate structure, the internal force will be changed with the translation of the supports, because the internal force is related to the absolute value of the stiffness EI. When the tension is different with the compression modulus, EI is the function of internal force and is not constant any more that is different from classic mechanics. In the other words, it is a nonlinear problem to calculate the internal force. The expression for neutral axis of the statically indeterminate structure was derived in the paper. The iterative program for nonlinear internal force was compiled. One case study was presented to illustrate the difference between the results using the different modulus theory and the single modulus theory as in classical mechanics. Finally, some reasonable suggestions were made for the different modulus structures.  相似文献   

汇率干预中的多点自由边值问题的数值计算方法     

赵连霞  朱正佑  秦成林 《上海大学学报(英文版)》2005,9(4):320-325

1IntroductionIt is i mportant for the economic development of acountry to maintain the stabilization of exchange rate,so the intervention of exchange rate has become thetopic of the main concerns of the economic and math-ematical circles[1-5].To maintain the stabilization ofexchange rate,many countries use target zone re-gi mes,that is,the central banks intervene in the for-eign exchange market such that the exchange ratestays within the interval[a,b].There are fixed costand cost proportional …  相似文献   

Agile administrative choreographies for multimode education at the University of Pretoria     

Tony John Mays  Folake Ruth Aluko 《Distance Education》2019,40(1):5-19

This paper responds in part to a special edition of this journal (39/2) on dual-mode provision. We were concerned that contact providers might drift into distance education provision through extending campus-based online learning without first thinking through the underpinning implications of its administrative systems, an issue that was not addressed in the special edition. Proceeding from a pragmatic and constructivist perspective, while adopting a transactional orientation drawing on systems theory and hermeneutics, this paper focuses on the challenge for administrative staff and systems of the changing nature of provision in terms of both the underpinning learning and business models. Based on experience and reflection, we conclude that the move into dual- and multimode provision is inevitable and that this requires agility on the part of both administrative staff and systems that is often overlooked in planning and review processes.  相似文献   

几何刚度矩阵的推导和应用   总被引：1，自引：0，他引：1  

张年文 《茂名学院学报》2004,14(3):45-48

以虚功原理为基础有限元进行梁柱的分析，应用很少，主要是于在计算中，荷载很小时，计算结果就不收敛了。因而也就很难应用于工程分析中。以虚功原理为基础推导得出了几何刚度矩阵，分析了计算不收敛的原因，得出结论：不考虑节点力因位移产生的不平衡力对几何刚度矩阵的影响，是计算结果不收敛的主要原因。算例说明了当考虑了这个影响以后，计算结果和文献给出的计算结果符合良好。  相似文献   

母语与外语“知识-认知双元结构”在FLT中的理论解析     

《成都师专学报》2006,25(3):84-86

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