共查询到20条相似文献,搜索用时 109 毫秒
1.
THEGENERALSCHEMEFORHIGHER-ORDERDECOMPOSITIONSOFZERO-CURVATUREEQUATIONSASSOCIATEDWITH■(2)¥ZENGYUNBO(曾云波)(DeportmentofAppliedMa... 相似文献
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何学中 《应用数学学报(英文版)》1995,11(2):184-191
GLOBALATTRACTIVITYOFLINEARNON-AUTONOMOUSNEUTRALDIFFERENTIAL-DIFFERENCEEQUATIONSHEXUEZHONG(何学中)(DepartmentofMathematics,Ningxi... 相似文献
3.
FOURIER-CHEBYSHEVSPECTRALMETHODFORSOLVINGTHREE-DIMENSIONALVORTICITYEQUATIONGUOBENYU(郭本瑜);LIJIAN(李健);MAHEPING(马和平)(Departmento... 相似文献
4.
Zhang Linghai 《数学年刊B辑(英文版)》1998,19(1):35-58
UNIFORMSTABILITYANDASYMPTOTICBEHAVIOROFSOLUTIONSOF2-DIMENSIONALMAGNETOHYDRODYNAMICSEQUATIONSZHANGLINGHAIManuscriptreceivedJu... 相似文献
5.
ONTHEDIFFERENTIABILITYOFTHEPARITYPROGRESSIVEPOPULATIONSEMIGROUP¥SHIDEMINGANDYANGLUSHAN(DepartmentofMathematics,ZhengzhouUnive... 相似文献
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LI JUNJIE 《高校应用数学学报(英文版)》1994,9(1):55-64
ANOTEONREGULARITYANDEXISTENCEOFSOLUTIONSFORACLASSOFNON-UNIFORMLYDEGENERATEELLIPTICEQUATIONS¥LIJUNJIE(Dept.ofMath.,ZhejiangUni... 相似文献
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SOLVXBILITYOFFORWARD-BACKWARDSDESANDTHENODALSETOFHAMILTON-JACOBI-BELLMANEQUATIONS¥MAJIN;YONGJIONGMINAbstract:Thesolvabilityof... 相似文献
8.
EXPONENTIALSTABILITYOFLINEARTIME-VARYINGIMPULSIVEDIFFERENTIALSYSTEMSWITHDELAYS¥GuanZhihong(关治洪);LiuYongqing(刘永清)(SouthChinaUn... 相似文献
9.
GLOBALSTRUCTUREOFTHEORBITSOFAKINDOFN-DIMENSIONALCOMPETITIVESYSTEMS¥ChengChun-chor,Litwin(郑振初)(HongKongInstituteofEducation,香港... 相似文献
10.
XIONG YUE-SHAN 《高校应用数学学报(英文版)》1994,9(2):153-167
THE ERRORS ESTIMATION OF THE CHEBYSHEV SPECTRAL-DIFFERENCE METHOD FOR TWO-DIMENSIONAL VORTICITY EQUATIONTHEERRORSESTIMATIONOF... 相似文献
11.
The linearized stability analyses of two-dimension Burnett equations were studied in present paper for the first time. The characteristic stability equation of two-dimension original Burnett equation was first derived and the characteristic curve was achieved. The material derivatives in original Burnett equations are then replaced with the Euler and Navier-Stokes equations. The stabilities of these two alternative Burnett equations are then analyzed. The linearized stability analyses show that the two-dimension original Burnett and Euler-based Burnett equations are not stable while the Navier-Stokes-based Burnett equations are stable. The critical Knudsen number for the original Burnett and Euler-based Burnett equations are 0.074 and 0.353, respectively. These critical Knudsen number are smaller than those of corresponding one-dimension equations. The two-dimension Burnett equations are more unstable than one-dimension equations. 相似文献
12.
The problem on the least number of fixed points of an equivariant map of a compact polyhedron on which a finite group acts is considered. For such a map, the least number of fixed points and the least number of fixed orbits are estimated in terms of invariants of the type of Nielsen numbers. The estimates obtained are sharp. The results are similar to those of P. Wong, but their assumptions are essentially weaker. Some notations are refined. The proofs are constructive. 相似文献
13.
The paper presents a permutation procedure for testing reflected (or diagonal) symmetry of the distribution of a multivariate variable. The test statistics are based in empirical characteristic functions. The resulting permutation tests are strictly distribution free under the null hypothesis that the underlying variables are symmetrically distributed about a center. Furthermore, the permutation tests are strictly valid if the symmetric center is known and are asymptotic valid if the center is an unknown point. The equivalence, in the large sample sense, between the tests and their permutation counterparts are established. The power behavior of the tests and their permutation counterparts under local alternative are investigated. Some simulations with small sample sizes (?20) are conducted to demonstrate how the permutation tests works. 相似文献
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横观各向同性多孔超弹性矩形板的单向拉伸 总被引:2,自引:0,他引:2
利用横观各向同性超弹性材料的广义neo-Hookean应变能函数研究了含有多个微孔的超弹性矩形板在单向拉伸作用下的有限变形和受力分析.给出了含有某种对称性分布的多个微孔的矩形板的变形模式,通过求解该变形模式满足的微分方程,将它用两个参数表示出来.可应用最小势能原理导出变分近似解,从而得到矩形板的变形和应力分布的解析解.分析了板中微孔的增长及微孔边缘应力的分布情况,讨论了板的各向异性程度及微孔的大小和孔间距离的影响,得到了单个、三个及五个微孔板中微孔的增长变形和孔边应力分布的一些基本规律规律,并进行了相互比较. 相似文献
16.
何朝兵 《高校应用数学学报(A辑)》2016,(4):413-427
通过添加部分缺失寿命变量数据,得到了删失截断情形下失效率变点模型相对简单的似然函数.讨论了所添加缺失数据变量的概率分布和随机抽样方法.利用Monte Carlo EM算法对未知参数进行了迭代.结合Metropolis-Hastings算法对参数的满条件分布进行了Gibbs抽样,基于Gibbs样本对参数进行估计,详细介绍了MCMC方法的实施步骤.随机模拟试验的结果表明各参数Bayes估计的精度较高. 相似文献
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凹角型区域椭圆边值问题的自然边界归化 总被引:3,自引:0,他引:3
In this paper, the natural boundary reduction for some elliptic boundary value problems with concave angle domains and their natural boundary methods are investigated. The natural integral equations and the Poisson integral formulae are given. The finite element methods of the natural integral equations are discussed in details. The convergences of the approximate solutions and their error estimates are obtained. Finally, some numerical examples are presented to show that our methods are effective. 相似文献
19.
M. V. Lipavskii A. I. Tolstykh E. N. Chigirev 《Computational Mathematics and Mathematical Physics》2006,46(8):1359-1377
The properties of ninth-order multioperator compact schemes based on known third-and fifth-order compact approximations are examined. The domains where the multioperators have fixed signs are determined numerically. The numerical results are compared with the exact solution to the Burgers equation. The multioperator schemes are applied to the problem of vortex sheet roll-up. 相似文献
20.
In this paper, we consider the short-pulse equation (SPE) by using the dynamical system theory. The periodic solutions of the SPE are investigated. The solutions are characterized by two parameters. The periodic waves existent conditions are found, and explicit parametric expressions of all periodic solutions are given. 相似文献