查询词典 estimates

In this paper,the estimates of upper bounds for the spectral radius of the iterative matrix M~(-1)N for some generalized diagonally dominant matrix M are presented.

对几类广义对角占优矩阵M，给出了迭代矩阵M~(-1)N谱半径的上界估计式，所得结果较已有结果适用于更加广泛的矩阵类。

The direct cost of construction for bid estimates is usually derived from a combination of the following approaches.

直接建筑成本为申办估计，通常是来自结合以下办法。

This present algorithm further distinguishes itself through sufficiently utilizes the advantage that the vector sensors provide from other beam space DOA algorithms in several regards: 1 beams are formed in the vector-field domain; 2 produce at moderate signal-to-noise ratio estimation performance comparable to the traditional scale array methods;3 these vector-field beams are formed blindly using no apriori source information and coarse estimates of the direction cosine are derived to start off MUSICs iterative search so it demand less computation; 4 deploy agilely , since the fact that the output channel is various .

本文提出了矢量传感器阵列的自适应综合校准补偿方法，还提出利用单矢量传感器速度协方差矩阵分解来求解目标源方位，使得我们不要求校准源是合作性的，也无需知道校准源的先验知识，这比起常规辅助源校准方法具备较大宽容性。随着高性能阵列处理技术及数字信号处理硬件的快速发展和矢量传感器制造工艺的不断成熟，矢量传感器将在新型水雷、低频远程智能鱼雷、声纳浮标、低频拖曳线列阵和新型舰壳声纳，灵巧传感终端，战场监视系统，反隐形雷达，通讯等军民用领域取得良好的发展应用前景。

In the case of Dirichlet boundary conditions,these estimates were improved by Baker[1]who used a technique that can be interpreted as a nonstandard energy argument.

Dupont[15]使用标准能量方法给出了一类线性双曲方程Galerkin解的L2误差估计，对于Dirichlet型边值问题，Baker[1]对其结果作了改进，用的是一种可谓"非标准的能量不等式"方法。

Second, we consider the strongly coupled elliptic system with homogeneous Dirichlet boundary conditions. The prior estimates for thesolution of nonlinear elliptic system are derived. It is shown that there is no coexistence state if diffusion rates are strong, or if the intrinsic growth rates are slow.

第二章研究带齐次Dirichlet边界条件的强耦合椭圆系统，首先推出非线性椭圆系统解的先验估计，然后证明了当食饵和捕食者的扩散率足够大，或者出生率足够小时，系统不存在共存现象，并给出半平凡解存在的充分条件。

This paper discusses the upper estimates of weighted eigenvalues for Dirichlet problem of membrane vibration.

考虑膜振动Dirichlet问题的带权特征值上界估计，利用试验函数、分部积分以及不等式估计等方法，建立了用前n个特征值来估计第n+1个特征值的上界估计，其估计系数与区域度量无关。

Effect of spectral leakage in discrete Fourier transform on frequency, amplitude and phase estimates of multifrequency signals is studied.

研究了离散Fourier变换中存在的谱泄漏效应对多频信号的频率、幅值和相位估计精度的影响。

He estimates that Digital Sky companies have about 40 per cent of the Russian market for internet display advertising.

据他估计，数字天空旗下公司拥有俄罗斯网络陈列式广告市场约40%的份额。

TheIntergovernmental Panel on Climate Change estimates global CO2 emissions must drop to less than 10 billion tons per year by 2050 to stave off potentially catastrophic environmental impacts expected to affect developing countries disproportionally.

气候变化政府间小组会议估计全球二氧化碳排放量必须在2050年之前每年减少100亿吨，才能使发展中国家免受灾难性的环境影响。

Gravity model: The typical inputs include one or more flow matrices, an impedance matrix reflecting the distance, time, or cost of travel between zones, and estimates of future levels of productions and attractions.

重力模型：输入的基本数据包括一个或多个流量矩阵，反映距离的阻抗矩阵，小区间的出行时间和成本，未来发生和集中预测。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。