系数群

词组短语

coefficient group · group of coefficients

与系数群相关的网络例句 [注：此内容来源于网络，仅供参考]

It is proved that the least squareestimators of linear estimable functions of regression coefficients areadmissible under matrix loss and minimax. The necessary and sufficientexistence conditions are derived for the uniformly minimum riskequivariant estimators of linear estimable functions ofregression coefficients under an affine group and a transitive group oftransformations respectively. It is also proved that there are no UMREestimators ofthe covariance matrix and variance under an affine groupof transformations and quadratic loss functions.

本文证明了回归系数的线性可估函数的最小二乘估计是极小极大的且在矩阵损失函数下是可容许的；还分别在仿射变换群和平移群下导出了存在回归系数的线性可估函数的一致最小风险同变估计的充要条件，并证明了在仿射变换和二次损失下不存在协方差阵和方差的 UMRE 估计。

Generally speaking, the high group velocity and low attenuation factor and high Q〓 in the same area, but relatively low group velocity and high attenuation factor and low Q〓 in the same area in China is the general distribution.

在不同周期，面波衰减系数或品质因子在整个中国大陆区域分布是不均匀的；总体表现为高群速度分布的区域呈现高Q〓和低衰减系数、低群速度分布的区域呈现低Q〓和高衰减系数分布的特点。

By using finite element method,the pile group effect coefficient of soil resistance under pile cap is analyzed for the composite pile foundation.

利用三维弹塑性有限元方法，对复合桩基承台底土阻力群桩效应系数进行了分析；根据分析，编制了相应的有限元程序；应用该程序研究了承台宽与桩长之比、桩距、桩数、土类等对承台底土阻力群桩效应系数的影响。

The main results are as follows: the relations between local fractional integrated semigroups and the corresponding Cauchy problem, global fractional integrated semigroups and regularized semigroups are given; introduction of the notion of regularized resolvent families, and the generation theorem and analyticity criterions for regularized resolvent families are obtained; the spectral inclusions between fractional resolvent family and its generator, and the approximation for fractional resolvent families in the cases of generators approximation and fractional orders approximation; elliptic operators with variable coefficients generating fractional resolvent family on L^2 by using numerical range techniques; and the L^p theory for elliptic operators with real coefficients highest order are obtained by Sobolev''s inequalities and the a priori estimates for elliptic operators; and a kind of coercive differential operators generates fractional regularized resolvent family by applying the Fourier multiplier method, functional calculus and some basic properties of Mittag-Leffler functions.

主要结论是：给出了局部分数次积分半群和相应的Cauchy问题的关系以及分数次积分半群和正则半群的关系；引入了正则预解族的概念，并给出了其生成定理和解析生成法则；给出了分数次预解族与其生成元的谱包含关系，并研究了在生成元逼近和分数阶逼近两种情况下相应的预解族的逼近问题；利用数值域方法证明了具变系数的椭圆算子在L^2上生成分数次预解族；利用Sobolev不等式和椭圆算子的先验估计证明了具变系数的椭圆算子在其最高项系数为实数时在L^p上生成分数次预解族；运用Fourier乘子理论、泛函演算和Mittag-Leffler函数证明了一类强制微分算子可以生成分数次正则预解族，并给出了该预解族的范数估计。

Firstly, we prove the existence and the uniqueness of the hyperfocal subalgebra when the coefficient field is split for a defect pointed group; then, considering the structural pattern of source algebras over arbitrary fields, by means of G-acted groups, we reduce the existence and the uniqueness of the hyperfocal subalgebra over an arbitrary field to the case that the coefficient field is split for a defect pointed group and the inertia group stablizes a hyperfocal subalgebra.

首先我们证明了如果系数域对亏点群是分裂的，则源代数的超聚焦子代数存在且共轭唯一；然后通过考虑任意域上源代数的结构模式，以G-作用群为手段，将超聚焦子代数的存在性和唯一性归结为系数域对亏点群是分裂的情况下惯性群稳定的超聚焦子代数的存在性和唯一性。

Using this method,we discussed for generalized Burger equation with variable coefficients and linear danping,obtained its symmetry group,simliar reduced equations,infinitesimal generator and Lie algebras;In chapter 6,using the Exp-function method,the generalized solutions of combined KdV-mKdV equation with variable coefficients are discussed.

首先介绍了Lie群分析法的基本思想，其次用Lie群分析法得到了带线性阻尼项的变系数广义Burgers方程的无穷小变换、无穷小算子的李代数结构，并具体求出了带线性阻尼项的变系数广义Burger方程的群不变解和约化方程。

The results showed that it would gain higher sustainable genetic respons and lower inbreeding rate when implementing BLUP selection in larger population. When the sire-dam ratio was too low, it would not only decrease the genetic response, but also increase the inbreeding rate. To gain higher genetic progress and acceptable inbreeding rate, it should keep enough large population size and feasible sire-dam ratio in practice.

结果表明，扩大育种群规模不仅可以获得更大的持续进展，同时还可有效缓解近交系数的过快上升；育种群中公畜比例过低时，不仅会降低遗传进展，群体近交系数的上升速度也会加快，实际中应保证育种群具有一定的规模和适宜的公母比例。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法，对云南元江中上游干热河谷分布的植被进行考察研究，把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲，建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表，以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

And both YH are higher than the corresponded Yobs, these maybe because the YH not susceptible to predatory, death, regeneration and so on.

进水中不同类型的基质会引起污泥内微生物菌群的变化，不同菌群的微生物其细胞产率系数和内源代谢系数等都不同，这可能是造成污泥产率差异的根本原因。

The rest reside among the populations. and that about 80.98% of 12 double chromosomal variability in arm ratio existed within the populations. The rest reside among the populations. Nested random effects analysis of variance for variable the relative length, arm ratio of chromosome, the mean of ratio (largest/smallest), mean ratio of ann. As. K. and actual length of genome of chromosome. As a resuit, chromosomal structure variations was 96.36% within the populations.

结果］在相付长度方面，香水百合12对染色体变异约有88.91%来源于居群内，约有11.09%来源于居群间；在臂比方面，香水百合12对染色体变异约有80.98%来源于居群内，约有19.02%来源于居群间；在染色体长度比、平均臂比、核型不对称系数和染色体组实际长度方面，香水百合染色体变异约有96.36%来源于居群内，约有3.64%来源于居群间。

与系数群相关的网络解释 [注：此内容来源于网络，仅供参考]

stratified cluster sampling：分层整群抽样

分层随机化stratified randomization | 分层整群抽样 stratified cluster sampling | 分化系数,变异系数coefficient of differentiation

coefficient functional：系数泛函

coefficient function 系数函数 | coefficient functional 系数泛函 | coefficient group 系数群

coefficient group：系数群

coefficient 系数 | coefficient group 系数群 | coefficient of absorption 吸收系数

local coefficient group：局部系数群

局部类域论 local class field theory | 局部系数群 local coefficient group | 局部系数 local coefficients

coefficient of association duties：按系数课征的关税

coefficient of apparent expansion | 表观膨胀系数 | coefficient of association duties | 按系数课征的关税 | coefficient of association | 社会系数, 群丛系数

group of automorphisms：自同构群

group object 群对象 | group of automorphisms 自同构群 | group of coefficients 系数群

group of coefficients：系数群

group of automorphisms 自同构群 | group of coefficients 系数群 | group of homomorphisms 同态群

group of homomorphisms：同态群

group of coefficients 系数群 | group of homomorphisms 同态群 | group of isotropy 迷向群

cohort life table：同龄群生命表 同齡群生命表

cohort 同龄组,同龄个体群 同齡群 Y | cohort life table 同龄群生命表 同齡群生命表 Y | coincidence index 共存系数,重合指数 遞合指數 Y

group seasonality：群组季节性

"群组季节性系数","group seasonal coefficients" | "群组季节性","group seasonality" | "群隔符字元","group separator character"