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Since in some instance, the variance of response variable might be changeable along withthe alteration of explanatory variable, in the procedure of model constructing, a fixedeffects model should be considered firstly, then the random effects model or randomcoefficient model when necessary. The best fit model should be chosen by comparing thealterations of between-study variance and residual variance, as well as their relationshipswith covariates.

基于各研究中因变量与自变量间的曲线形状可能存在较大差异，建模时可依次考虑固定效应模型、随机效应模型和带协变量的随机系数模型，并观察研究水平的方差与残差方差的变化，以及与协变量的关系，从而选择最优模型。

Rostropovich/Karajan on DG yes, I have heard some complains on this, overly self-indulged (but less so if compared one with Ma/Masur, less poetic if compared by the one by Fournier/Szell (true, but it is also less stringent, and better accompanied by Karajan than Szell did to Fournier).

新大陆和大协在同一张CD上的版本的确有，是Universe收集其下DG，Decca，Philips，According各个版本的经典录音出的一个系列中的一张，只是目录中可能只标有新大陆，其中新大陆由Haitink指挥，大协由Genderon独奏，我想从各方面讲这张都应该算是不错的。

For these important and practical problems,sample covariance matrix is an important statistic because many important statistics are functionals of it.When we make statistical inferences,such as estimations and/or hypothesis tests,the sample covariance matrices must be investigated.

以上诸多方面在做估计和假设检验过程中，无不用到大维随机矩阵的处理，尤其是大维样本协方差矩阵的相关性质，因为多元分析中许多重要的统计量都可以表示成样本协方差矩阵的函数。

The sample covariance between each independent variable and the OSL residuals is zero.

每个自变量和OLS协残差之间的样本协方差为零。

On the ground that the covariance between the disturbing gravity field elements is not isotropic, the covariance matrix has a complicated structure (its submatrix being not repetitive Toeplitz matrix) and thus its degree cannot be degraded with transformation matrix method, so it cannot be put into practice. So far, the application of least squares collocation to the modeling and data processing of the horizontal disturbing gravity field observations has not been found in literature.

由于水平扰动场元之间的协方差并非各向同性，导致协方差矩阵结构复杂(子矩阵不是 Toeplitz 循环阵)，不能利用变换矩阵将其降阶，无法付诸实践，迄今尚无最小二乘配置理论应用于水平扰动场元观测量的模型化公式和数据处理方法。

In this foundation, analyzes the general situation of current urban the real estate industry in China, some significant characters which are resulted by the inharmonic development of the real estate industry and economy development are analyzed deeply.Using the analytical model of input-output, based on a detailed analysis of the internal relations between the estate industry and the development of related industries. Thus indicating the driving erect of estate industry on related industries.

运用投入产出分析模型对我国房地产业与相关产业发展之间的内在联系进行了深入的分析，分析房地产业对国民经济相关产业的带动效应：利用计量经济学中的协整检验以及格兰杰因果检验模型，对房地产业与国民经济增长之(来源：374737ABC论文网www.abclunwen.com)间的协整关系和因果关系分别进行检验，结果表明，两者之间并不存在长期稳定的关系。

As a result, when in , subset of MA, obtained by imposing constraints on MA, AL is intensional because =L is equivalent with ≡.

在考虑了复制操作和限制操作的情况下，提出了逻辑等价的协归纳操作描述，并利用协归纳关系与进程结构同余关系进行比较，证明了若对MA加上约束条件得到子集MAsynIF，此时逻辑等价与结构同余关系是等价的，即AL在MAsynIF中是内涵的。

Since the gauge covariance of the original system are kept in every step of calculation process, we apply the techniques to calculate the quark propagator in presence of an arbitrary gluon field is calculated gauge and Lorentz covariantly and a consistent result is obtained.

鉴于此方法在计算过程的每一步都保持了系统原有的协变性，我们应用它计算了含有胶子场的规范和洛仑兹协变的夸克传播子。

The price for the plowshares and mattocks was two-thirds of a shekel, and a third of a shekel for sharpening the axes and for setting the ox-goads.

磨快犁和锄的价钱是三分之二＂协刻耳，＂磨快镰刀或装制刺针是三分之一＂协刻耳。

With strong support from china racing pigeon association and beijing racing pigeon association ,the biaoyou international racing pigeon center was established by beijing biaoyou racing pigeon company to the south of beijing daxing wildlife zoo.the center occupies a total area of 35 mu and consists of 42 3-10-meter pigeonries (more than 1500 square meters in total),including observation room.

在中国鸽协、北京市鸽协的热情关心和鼎力支持下，北京飙友鸽业在北京大兴野生动物园南侧设立飙友国际赛鸽中心。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。