covariation

1. Radar echo frequency spectrum estimation based on α stable distribution covariation Application of Changing Chirp Rate Sign in Eliminating Range Blur of SAR
   基于α稳定分布自共变的雷达回波频率谱估计变线性调频斜率符号在合成孔径雷达中的应用
2. Young Children s Ability of Causal Inferences in Different Patterns of Variation and Covariation; Study on the Very Short-Range Storm Numerical Forecasting Model Part ⅱ: Results of the Model Basic Experiments
   因果变化模式与因果联结强度在幼儿因果推理中的作用短时风暴数值预报模式研究Ⅱ.模式的基础试验结果
3. The reason for positive interspecific covariation was that these species used the resource similarly.
   种对正协变的存在是由于这些物种对环境资源的利用具有相似性所致。
4. Study on Variation and Covariation Pattern of Seedling Nutrient Concentrations within and between Populations of Arabidopsis pumila
   种群内和种群间小拟南芥植株营养含量的变化及协变格局研究
5. Simulations show that the performance of proposed algorithm is not only better than second order cyclic correlation, but also the covariation.
   仿真实验表明它优于传统二阶循环统计量算法，并且与共变等基于分数低阶统计量的时延估计方法相比具有信号选择性。
6. The results showed: ( 1) the factors which influence causal judgment were that the cause was the real cause or stimulative, the familiarity of the cause, and the covariation degree of causes with outcomes;
   结果发现：（1）影响因果判断的因素有：事件原因与促进条件的性质差异，原因的熟悉度，原因和结果的共变程度；
7. The effect of alternatives cause varied in different kinds of covariation. Simulations show that the performance of proposed algorithm is not only better than second order cyclic correlation, but also the covariation.
   其它可能原因对于不同共变信息的影响有着明显的差别。仿真实验表明它优于传统二阶循环统计量算法，并且与共变等基于分数低阶统计量的时延估计方法相比具有信号选择性。
8. The algorithm constructs matrixes by using covariation or covariation coefficient and estimates bearing and range of near-field sources by rooting method.
   本方法利用协变异（或协变异系数）构造矩阵，并通过求根的方法估计近场源的方向角和距离参数。
9. Systematic covariation of sr, ba, CA elements in the Cenozoic volcanic rocks from Fildes Peninsula ( west antarctica) and its relation to petrogenesis
   菲尔德斯半岛新生代火山岩中Sr，Ba，Ca元素的相关变化及其对岩浆演化的启示
10. Using covariation concept in array signal processing, the proposed algorithm can obtain clean speech signal subspace by eigen-decomposition of the covariation coefficient matrix of speech signal corrupted by impulsive noise.
    该算法把阵列信号处理中的协变异应用到语音增强中，对带噪语音信号的协变异系数矩阵进行特征值分解得到纯净语音信号的子空间。
11. Studies on the interspecific covariation of 16 common tree species in the succession of pubescent hornbeam community
    云贵鹅耳枥群落演替中乔木树种间协变的研究
12. This paper presents a new fractional lower order moment-based 2-D direction finding method-robust covariation DOA matrix method in the presence of impulsive noise which can be modeled as a symmetric alpha-stable ( S α S) process.
    该文提出了一种新的在冲击噪声环境中基于阵列输出信号分数低阶矩的二维测向方法&稳健的协变异波达方向矩阵法。
13. The covariation of language and society is a fundamental concept in the covariation theory of sociolinguistics.
    语言和社会的共变是社会语言学共变论的一个基本观点。
14. Covariation of area estimation in digital cadastration and its applications
    数字地籍测量中面积估计的协方差及其应用
15. X~ 2-test and r formula were available to reflect interspecific covariation relationship of main populations in Alsophila spinulosa community in condition of different disturbance intensity. They also could be used to show pattern of association pairs on space structure.
    X2检验公式和r公式能够较好地反映桫椤群落在不同干扰强度作用下主要种间的协变关系，较客观地指示了联结种对在植物空间结构中的格局。
16. The present study investigated how young children make accurate causal inferences on the basis of five patterns of variation and covariation.
    对93名幼儿进行了五种因果变化模式的因果推理题目的测试。
17. The results were as follows: ( 1) In these different patterns of variation and covariation, the children showed different ability in reasoning and they have more difficulty in some special patterns.
    结果表明：（1）在不同的因果变化模式下，被试进行因果推理的成绩存在差异，且在对于这五类题目的掌握上具有一定的顺序。
18. Study on Effect of Human Disturbance on Interspecific Covariation of Alsophila spinulosa Community
    人为干扰对桫椤群落植物种间协变影响的研究
19. The results were as follows: ( 1) alternative causes did affect subjects 'causal induction based on covariation;
    研究结果表明：（1）其它可能原因会影响到被试利用因果共变信息而进行的因果推断。
20. Studes on the genetic covariation between two quantitative traits ⅲ. correlative heritability and its application in breeding
    数量性状相关遗传变异的研究Ⅲ.相关遗传力及其在育种上的应用
21. The use of co-heritability to express the genetic covariation between two characters will give smaller sampling errors than those of the genetic correlation(λ A).
    用相关遗传力来表达性状间的相关遗传变异要比通常所用的遗传相关更准确一些。
22. It reveals that the interspecific covariation can not only display the probability of species coexistence but also indicate the direction and extent to which the quantity of species changed.
    研究结果表明，种间协变不仅能够反映出物种间共存的机率，而且能够反映出其相对数量变化的趋势和程度。
23. Hidden Covariation Detection procedure is used in the latter two experiments. The effects of some external factors, such as stimulus features, learning length and achievement motivation, are explored.
    后两个实验在国内首次采用非显著协变关系学习法探讨了刺激特征、学习次数和成就动机等因素对内隐学习的影响。
24. Since language itself is closely correlated with the economy, appellation directly embodies the relations of covariation between social languages and global economy.
    因为语言本身是与经济密切相关的，称谓语直接体现了社会语言和全球经济之间的共变关系。
25. The covariation between language use and social change has long been one of the major sociolinguistic concerns.
    社会语言学一直以来关注语言使用与社会共变的研究。

noun

1. (statistics) correlated variation