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QUALITATIVE ANALYSIS FOR A THIRD-ORDER DIFFERENTIAL EQUATION IN A MODEL OF CHEMICAL SYSTEMS
Periodic solution of Hopf type determina
2007/12/10
摘要 In this paper a mathematical model of chemical systems is investigated. We present the conditions for the existence and local stability of the steady states and the periodic solution of the Hopf ty...
摘要0, V={v|v∈H~1(Ω),v|Γ_1=0}, and V_0={ω|Δω=h in Ω,ω|Γ=0,\forall h∈V}. Let V_0′=the dual space of V_0,a(u,v)=∫_Ω▽u·▽Δvdx, and F(v)=∫_Ω fvdx+∫_(Γ_2)g1Δvds-∫_Γg2\partial v/{\partial \nu}ds, f∈V′_0,g1∈H~(...
A NEW CHARACTERIZATION OF FIXED MODES FOR DECENTRALIZED CONTROL SYSTEMS
Decentvalized control Fixed mode Matre
2007/12/10
摘要 In this paper, a study of the characterization of fixed modes in decentralized control is made. A new sufficient and necessary condition for the existence of fixed modes is obtained by means of the...
AN APPROACH TO RESOLVE CONFLICTS BY TRADE-OFF ANALYSIS
Pairwise comparison trade-off of a deal
2007/12/10
摘要 In this paper we propose an approach to resolve the conflicts in which more thantwo parties are allowable. It is a refinement and extension of Lootsma's pairwise comparison method for resolution of...
AN EMPIRICAL BAYES TWO-SIDED TEST PROBLEM FOR CONTINUOUS ONE-PARAMETER EXPONENTIAL FAMILIES
Empirical Bayes two-sided test exponen
2007/12/10
摘要 An empirical Bayes(EB) two-sided test problem about the continuous one-parameter exponential family has been discussed. We construct the EB test decision rule and prove its asymptotical optimality....
SEVERAL RESULTS ON ESTIMATION OF PARAMETERS UNDER MATRIX LOSS FUNCTION
Matrix loss function Bayes estimators
2007/12/10
摘要 In this paper, the definitions of Bayes estimator, minimax estimator, minimumrisk equivariant estimator and admissible estimator under the general matrix loss functionare given. Several results on ...
右删失数据下的时间序列数据分析
平稳序列 右删失 EM算法 预测
2007/8/7
当平稳时间序列$\{X_n\}$被另外的平稳序列$\{Y_n\}$删失后, 我们研究$\{X_n\}$的协方差,相关系数的估计问题. 特别当$\{X_n\}$是AR(p)序列时, 我们研究AR(p)的参数估计和一步预测问题.给出的估计量是强相合的. 计算机模拟结果说明所提供的方法是适用的.
概述作者近十年来在复杂系统可靠性分析方法研究方面所做的部分研究工作,其中包括:复杂系统可靠性综合评估方法研究;复杂系统贮存可靠性综合评估方法研究;复杂系统可靠性综合验证方法研究;复杂数据类型下的数据填充算法等内容.
Stability Analysis for the Large-Scale Systems with Time-Delay
Large-scale time-delay system Lyapunov functional partial decomposition method Razumikhin-type theorem
2007/8/7
The stability analysis problems were put forward for the large-scale systems with time-delay by using the partial decomposition method. With the stability of the isolated subsystems without time-delay...
误差为鞅差序列的回归函数估计的收敛速度
鞅差序列 非参数回归 加权核估计 一致最优强收敛速度
2007/8/7
当误差为鞅差序列时,研究固定设计点列情形下非参数回归函数一般权函数的非参数估计,并在一些基本条件下给出了估计的一致最优强收敛速度.
讨论了二维非定常不可压Navier-Stokes方程的两重网格方法. 方法包括在粗网格上求解一个非线性问题,在细网格上求解一个Stokes问题.采用一种新的全离散(时间离散用Crank-Nicolson格式,空间离散用混合有限元方法)格式数值求解N-S方程.证明了该全离散格式的稳定性. 给出了L2误差估计. 比标准有限元方法, 在保持同样精度的前提下, TGM能节省大量的计算量.
在实际的调查中经常会出现缺失数据. 如何处理这种情况下总体目标量的估计是一个重要问题.Zou 等(2002)对缺失数据情况下的样本轮换方法证明了他们所提出的线性化 Jackknife 方差估计量在均匀回答下是估计量方差的近似的设计无偏估计. 这一性质对于 Jackknife 方差估计量的使用提供了重要依据. 对于其它情况下 Jackknife 方差估计量是否也具有这一性质无疑是一个有意义的问题. ...
误差方差的非齐次估计的可容许的充要条件
方差 非齐次二次估计 容许性 平方损失函数
2007/8/7
研究误差方差的非齐次二次估计的可容许性.在平方损失下,给出了一个非齐次二次估计在非齐次二次估计类中是误差方差的容许估计的充要条件.