充分研究

We make the following assumption for When 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of Least squares estimate have been discussed in many documents. Considered 2 is nonnegative definite matrix, this thesis derives Best linear unbiased Estimate of parameter matrix B and estimable parameter function KBL under the meaning of matrix nonnegative definite and the property of maximum probability of BLUE is investigated.

当∑＞0时，众多文献讨论了回归系数阵的各种估计及LSE的有效性，本文考虑了当∑≥0的情形，给出了回归系数阵B及其可估参数函数KBL的在矩阵非负定意义下的最优估计，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与BLUE的偏差估计，定义了LSE相对于BLUE的一个相对效率，并给出了它的界。

In an experiment of constructing a phylogeny of the Eutherian orders, its results not only support the Rodents,(Ferungulates, Primates grouping, but also give an evolutionary tree that is identical to the one constructed by the maximum likelihood method, which indicates that sequence distance defined is very effective to measure the relatedness between sequences.

在研究基于基因组序列的进化关系的实验中，不仅支持了哺乳类动物中（啮齿动物，（灵长类动物，Ferungulates））进化关系分类的结论，而且构造的进化树也与由最大似然方法构造的进化树完全一致。这充分说明了我们给出的序列距离对度量序列相似性是非常有效的。

Then the dissertation introduces the international and domestic achievements of the accounting for executory contract, and conducts the analysis and research systemically, I think that we should improve the traditional accounting theory before the executory contracts could be recognized and fully disclosed in the accounting reports .

第二部分介绍了国内外对履行中合约的会计处理的各种理论成果，并在此基础上对履行中合约会计进行了系统的分析与研究，认为要想将履行中合约在会计报表中予以充分的反映，必须完善现行的会计理论。

No matter what age changes, no matter how abundance of the form of competition, knowledge and person with ability are exiguous resource. The intention of the paper is how to dig out treasure thereinto by effective means, this means is knowledge management.

无论时代如何变化，竞争的形式如何地丰富，人才永远是一种稀缺资源，而人力资源管理的基本的假设就是企业的所有员工对企业的成长与未来而言都是一笔宝贵的财富，本文研究的目的就是如何通过一种行之有效的方法来挖掘出其中的宝藏，充分整合人才以发挥其最大的功效，这种方法就是知识管理。

Some sufficient conditions of the existence and uniqueness of the periodic solutions are obtained.

研究了一阶非线性泛函微分方程的周期解，得到了周期解存在唯一的一些充分条件，推广和改进了已有的结果。

In the second chapter, we will exploit the skill of the fixed point theorem of cone expansion and compression to study a class of fourth ordered singular differential equation: where /...

有关奇异微分方程边值问题正解的存在性、唯一性、多解性以及正解存在的充分必要条件近年些来获得了广泛的研究。

In this paper, a disease transmission model of SEIRS type with exponential demographic structure is studied. Two sufficient conditions are obtained to guarantee the local or global exponential stability of the disease free equilibrium by using a new technique based on the concept of comparison.

本文研究了一类具指数人口统计与结构的SEIRS传染病模型，利用一种新的基于比较原理的分析，获得了无病平衡点局部和全局指数稳定的两个充分条件。

The first special person is the tooth fairy, and the tooth fairy gives you money for your teeth, so it works like this: when you're very young you lose all your teeth, usually one by one, so every time you lose a tooth you put your tooth under your pillow and when you wake up the next day, magically there is money under your pillow, usually it's a silver dollar

对于那些喜欢利用中午时间在办公室里打个盹的人来讲，有了能够支持他们这样做的充分理由。因为希腊科学家最新公布的一项研究结果显示，中午打个盹能够降低致命心脏病的发生，这在工作男性中尤为明显。

We also have offices with comprehensive and advanced fieldwork facilites and equipments in wuhan, chengdu and shenyang.

我们为有志于市场研究行业的人才提供充分施展才能的环境和成长空间。

This thesis not only analyses the artistic characteristic of Wang Jiawei's film fully, sums up its artistic law, excavates its deep intension, shows its unique explores consciousness and innovation spirit, but also studies the important position of Wang Jiawei's film in the filmdom and society civilization domain from the angle of sociology.

本文不仅对王家卫电影的艺术特色进行了充分的分析研究，总结其艺术规律，挖掘其深刻内涵，展示其独特的探索意识和创新精神，而且还从社会学的角度对于王家卫电影在当今电影界和社会文化层面的重要地位进行了一定的探讨。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。