In this paper,it is presented a necessary and sufficient condition for the likelihood estimates about parameters a and b to be finite,positive and unique when the software failure data is interfailure data or grouped data.
文章分析了Ｇ－ＯＮＨＰＰ模型在完全共效数据和不完全共效数据情况下，运用极大似然法求解参数ａ和参数ｂ时，存在有限正数解ａ、ｂ的充要条件作了分析，并且证明了在此充要条件下，其参数解是唯一的。
The necessary condition that X(v)exists limit cycles is that the 2×2 matrix A have complex eigenvalues, and some sufficient conditions that X(v)exists limit cycles and unique limit cycle are given,where f(v) may be non-homogeneous function.
得到了向量场有极限环的必要条件是2×2矩阵A有复特征值,以及讨论了极限环存在和唯一的一些充分条件,这里f(v)也许是非齐次函数。
Because the solution is not unique,the L X 1 adjustment method is proposed in this paper.
为了直接处理含有粗差的变形观测数据，文献［１］提出了Ｌ－Ｘ－１平差模型，但这种Ｌ－Ｘ－１平差模型解的唯一性较差。
In the perspective of culture , the “uniqueness” of his patriotic poems is manifested in that his patriotic passion is couched in his admiration for t.
文学史家朱自清曾多次称许闻一多是抗战以前“唯一的爱国诗人” ,对此 ,学术界似乎缺少比较集中的关注和比较精细的解读。
Existence and Uniqueness of Global Solutions of a Free Boundary Problem Modeling Tumor Growth;
一个肿瘤生长自由边界问题解的整体存在性和唯一性
Existence and uniqueness of global strong solutions of the initial boundary value problem for a class of systems of reaction-diffusion equations in biophysics;
一类多维反应扩散方程组初边值问题整体强解的存在唯一性
Research on the existence and uniqueness of a differential equation positive solution;
一类微分方程正解存在唯一性的研究
Existence,Uniqueness and Asymptotic Behavior of Global Solutions for Verhulst s Population Mathematical Models;
Verhulst型人口模型弱解的存在性、唯一性和渐近性
The unique of inverse eigenvalue problem for a symmetric matrix;
一个对称矩阵特征值反问题的唯一性
The Exitence and Uniqueness of Strong Solution of Forest Evolution System and the Stability;
森林发展系统强解的存在唯一性及稳定性分析
The unicity of Sharkovskii-series(S-series);
Sharkovskii序(S序)的唯一性
Unicity theorem of derivative share polynomial;
导函数分担多项式的唯一性定理
On the Unicity Theorem for Class Q Meromorphic Functions;
Q类亚纯函数的唯一性理论
An n×n sign pattern matrix A is a unique inertia pattern, if all matrices with sign pattern A have the same inertia.
一个n阶符号模式矩阵A称为惯量唯一模式,如果属于符号模式A的所有矩阵都具有相同的惯量。
The “Non-uniqueness” of Shadow Prices in Linear Programming;
线性规划中影子价格的“非唯一性”
By discussing how to distinct the non-uniqueness of ordinary differential equation starting value,and prompting the result,this essay has obtained the non-uniqueness distinction principle of difference differential equation.
讨论了常微分方程初值问题解存在非唯一性的判别问题,并将所得结论进行推广,得到差分微分方程初值问题解非唯一性的判别准则。