查询词典 positive definite eigenvalue problem

In hepatitis B virus s inapparent infecter crowds, positive rates of Pre - S2 antigen were 93.10% and 60.00% respectively to HBeAg positive people and HBeAb positive people. People of " Hepatitis B Large - three - positive" and " Small - three - positive", their positive rates of Pre - S2 antigen were 92.31% and 62.50% separately.

在乙肝病毒隐性感染者人群中，HBeAg阳性者、HBeAb阳性者的Pre-S2抗原阳性率分别为93.10％、60.00％；&乙肝大三阳&、&小三阳&者的Pre-S2抗原阳性率分别为92.31％、62.50％。

Results: Of all the semen samples, 8 were HCMV positive, 4 HSV-Ⅱ positive, but none were both HCMV and HSV-Ⅱ positive. HCMV late antigens were positively and HCMV early antigens negatively expressed in the spermatogenic cells of the 8 HCMV positive cases. In the 4 HSV-Ⅱ positive cases, 3 were positively and 1 weakly positively expressed. In the semen of the 12 positive cases were found large numbers of immature spermatogenic cells, with different manifestations of apoptosis, such as chromatin pycnosis, vacuoles, damaged nuclear membrane, and apoptotic bodies, but without virus infection-induced specific morphological alteration.

结果：83例精液样本PCR检测HCMV阳性8例，HSV-Ⅱ阳性4例，未发现2种病毒同时阳性病例。8例HCMV阳性病例ICC标记生精细胞HCMV晚期抗原均见阳性表达，HCMV早期抗原均为阴性表达；4例HSV-Ⅱ阳性病例ICC标记生精细胞3例阳性表达，1例弱阳性。12例病毒阳性病例均发现较多未成熟生精细胞，并有不同程度的核染色质固缩、出现空泡、核膜破损、核崩解、凋亡小体等凋亡现象，但未能找到病毒感染的特异性形态学改变。

Empirical results indicate that all three hypotheses of this study sustained: Hypothesis 1—"career development" and "training" in the enterprise repatriation program has positive influence on the affective organizational commitment of repatriates;"career development" has positive influence on the normative organizational commitment;"career development","training" and "compensation and benefit" has positive influence on continuance organizational commitment; Hypothesis 2—"conscientiousness" and "neuroticism" has positive influence on the affective organizational commitment;"conscientiousness" and has positive influence on the normative organizational commitment;"neuroticism" has positive influence on the continuance organizational commitment; and Hypothesis 3—"openness to experience" and "emotional stability" can enhance affective organizational commitment when "career development" is implemented by the organization;"openness to experience" can enhance affective organizational commitment when "training" is implemented by the organization;"conscientiousness" can reduce continuance organizational commitment when "career development" is implemented by the organization;"emotional stability" can reduce continuance organizational commitment when "compensation and benefit" is implemented by the organization; and "extraversion" can reduce continuance organizational commitment when "job arrangement" is implemented by the organization.

实证结果显示，本研究三大假设皆达部份成立，第一假设：企业施行回任措施中的「前程规划」与「教育训练」将可提升回任人员情感性组织承诺、施行「前程规划」将可提升规范性组织承诺、施行「前程规划」、「教育训练」与「薪酬管理」将会提升持续性组织承诺。第二假设：回任人员「严谨性」与「情绪稳定性」特质可提升回任人员情感性组织承诺、「严谨性」特质可提升规范性组织承诺、「情绪敏感性」特质将会提升持续性组织承诺。第三假设：「严谨性」与「情绪稳定性」特质对组织施行「前程规划」可提升情感性组织承诺、「开放的学习性」对「教育训练」施行可提升情感性组织承诺、「严谨性」对「前程规划」施行可降低持续性组织承诺、「情绪稳定性」对「薪酬管理」施行可降低持续性组织承诺、「外向性」对「工作安排」施行可降低持续性组织承诺。兹就上述结果提供对企业与后续研究者的建议。对企业的建议为：1。企业在回任措施中应加强前程规划的设计：企业除了就短期的薪酬与工作安排条件让回任员工愿意留任，亦应思考如要让回任员工能够投入工作中，长期的规划与发展不可缺少。2。外派人员人格特质甄选工具的运用：为了能找到具备严谨性、情绪稳定性与开放的学习性特质的人选，甄选用的工具即扮演著十分重要的角色，可利用人格特质测验、面谈等甄选工具。

A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法，编制了数值计算程序，并把它应用于环境水力学反问题诸多领域，包括污染物一维非恒定扩散逆过程反问题，对流扩散方程逆过程反问题，河流水质纵向弥散系数反问题，非线性Boussinesq方程反问题，河流水质多参数识别反问题，BOD-DO水质模型参数反演问题，对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题，二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

And the sufficient and necessary conditions are obtained and the uniqueness of T is discussed and an algorithm for solving the inverse problem is provided. The other kind of structure inverse eigenvalue problem is for unitary Hessenberg matrices with positive subdiagonal elements. That is, a unitary Hessenberg matrices with positive sub-diagonal elements can be constructed when its eigenvalues and the eigenvalues of H_(11) and H_(22) are known. Here H_(11) and H_(22) are rank-one modifications of k × k leading principal submatrix of H and of its × remain submatrix respectively. In the end, the uniqueness of H and an algorithm is obtained.

文中首先讨论了这三组特征值之间的交错关系，接着确定了该逆问题有解的充要条件，并论证了其解的唯一性问题，最后给出了相应的数值算法；本文第二个问题解决的是一类不可约的酉Hessenberg阵的逆特征值问题：即一个不可约的酉Hessenberg阵可以由它的特征值、它的前k阶秩一修正的顺序主子阵的特征值以及它的后n—k阶余子阵的秩一修正阵的特征值来确定，文中最后讨论了唯一性和相应的算法。

In this paper, an extended divide and conquer algorithm is intended proposed, which is for solving the real symmetric band generalized eigenvalue problem under distributing environment Eigenvalue partition theorem is presented and proved Based on divide and conquer by extension, this algorithm computes generalized eigenpaires of symmetric band matrix pencil by bisection and generalized Rayleigh quotient iteration Theoretic analysis and numerical results show that this algorithm is better than the classic software package LAPACK when bandwidth is small and the scale is large Combined with multisection, which has good parallelism, it got good effects under distributed environments

提出了分布式环境下计算对称带状广义特征值问题的一种扩展分治算法，给出了特征值分割定理及其证明算法在扩展分治的基础上，利用二分压缩结合广义Rayleigh商迭代计算广义特征对理论分析和数值实验表明，对于窄带宽大规模的广义特征值问题，该分治算法明显优于LAPACK软件包结合并行性好的多分法，在分布式环境下获得了很好的并行效果1 引言本文研究了对称带状广义特征值问题Ax =λBx ( 1)的并行计算，其中，A ，B均为半带宽为r的n阶实对称带状矩阵且其中之一是正定的本文总假设B是正定的求解此问题有两种传统方法，第1种方法是通过计算矩阵B的Cholesky分解，将问题( 1)转化为标准特征值问题[1～3] ，进一步

By use of residue theorem,the trace identity of eigenvalue which correspond to the eigenvalue problem is obtained.

讨论了一个带非局部项的微分方程初值问题解的渐进估计，并利用留数定理给出相应特征值问题特征值的迹公式。

In the second part, we gave several basic and essential knowledge of inverse eigenvalue problems for Jacobi matrices: such as the properties of tridiagonal matrices, Jacobi matrices, orthogonal polynomials, Gauss quadrature formula and inverse eigenvalue problem for Jacobi matrices.

第二部分介绍了求解Jacobi矩阵反问题的基础：三对角矩阵和Jacobi矩阵，正交多项式，高斯积分方法的性质和Jacobi矩阵特征值反问题。

Constructing an entire function a;, the zeros of which are the eigenvalue of Dirac eigenvalue problem with general two points' linear algebra boundary conditions.

根据ω各项系数的不同情况，将一般两点边界条件分为八种基本类型，并得到相应的八个决定特征值的整函数ω和它们在相应围道上的渐近估计。

Thesolutions compose self-contained inner product space (weight function is constant 1),i.e., they are basic series of Hilbert space; hence any internal waves could beexpanded into generalized Fourier series. With difference method, Sturm-Liouvilleequation is transformed to matrix eigenvalue problem. Each eigenvalue is related to ahorizontal wave number, and relevant solution is a certain mode of internal wave.

其解系构成完备的加权(权函数为1)内积空间，即Hilbert空间，从而内波现象可以展成该解系的广义Fourier级数；采用差分方法，将 Sturm-Liouville 方程转化为矩阵特征值问题，每一个特征值对应一个内波波数，该特征值对应的解则是内波的某一模态。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。