查询词典 variance ratio

The prevalence and abundance of the acanthocephalan exhibited very similar and significantly seasonal change patterns in O. uncirostris and H. bleekeri bleekeri. The infection levels were higher in autumn and winter, but lower in spring and summer. However, the infection levels in Z. platypus kept stable all the year round. There were significant differences among the overall abundance of the acanthocephalan in the three host populations. Nevertheless, the frequency distribution of the parasite in the three kinds of fish was over-dispersed in most seasons and in total as measured by the variance to mean ratio. The variance to mean ratio was not found related to the infection levels.

在感染率和感染丰度方面，寄生于马口鱼和油的木村小棘吻虫呈现出显著的季节变化：秋冬季节感染率和感染丰度都比较高，而春夏季节则比较低；与此不同的是，寄生于宽鳍鱲中的木村小棘吻虫则全年都维持着较稳定的感染水平；木村小棘吻虫种群在三种宿主体内的总体感染丰度差异显著，但都呈聚集分布，三者的方均比与感染率和感染丰度之间无显著相关关系。

According to the ratio of genotype variance, the boll number is controlled mainly by dominance effects.

从加性效应、显性效应占基因型方差的比值看，显性效应对铃数影响更大。

Present various analytical methods in management decision making, including benefit/cost ratio analysis , variance analysis , and break-even analysis.

课程中将会陈述在管理决策中多种不同的分析方法，包含利润/成本比例分析、差异分析与损益平衡分析

Among 6 methods used to measure the pattern, the application of variance/mean ratio together with the x^2 test for goodness-of-fit to negative binomial distribution were deemed the best as their ecological meaning is explicit.

在判定物种分布格局的5种方法中，以方差／均值比率和负二项分布的检验联合运用效果较好，不仅生态学意义明显，而且结果具有严格的统计学意义。

For the problem that the suppression of co-channel interference and suppression of noise can't be balanced in signal-to-jamming and noise ratio maximization method for the linear precoding of multiuser multiple-input multiple-output downlink systems, an improved scheme that the term of noise variance is modified as a piecewise linear function is proposed, in which the balance between suppression of co-channel interference and suppression of noise can still be maintained even when the noise variance is a small value through piecewise modifying the term of noise variance, and thus the bit error rate and capacity of the systems are further improved.

针对多用户多输入多输出系统下行链路线性预编码的信干噪比最大化方法中，共信道干扰抑制和噪声抑制不能有效平衡的问题，提出将其中的噪声方差项修正为以噪声方差为变量的分段线性函数的改进方案。该方案通过对噪声方差项的分段修正，在噪声方差的值较小时依然能够保持共信道干扰抑制和噪声抑制间的平衡，从而使系统的误比特率性能和容量得到进一步提高。

R2 The adjusted R2 is 1 minus the ratio of sample variance of the OLS residuals (after correcting the degrees of freedom) to the sample variance of y.

调整过的R2是1减去OLS残差的样本方差与y的样本方差之比。

Our metrics of earnings management are based on the variance of the change in net income, the ratio of the variance of the change in net income to the variance of the change in cash flows, the correlation between accruals and cash flows, and the frequency of small positive net income.

收入管理我们的度规根据变化的变化在净收入上的，变化的变化的比率在净收入上的对变化的变化在现金流动上的，交互作用在增殖和现金流动之间和小正面净收入频率。

The influence functions of the variance components or the ratio of the variance components on the state estimates of the Kalman filter are also deduced.

推导了方差分量估计对Kalman滤波解的影响。

Through analysis of variance, the best mass ratio of different coating material matching is found out: It is the best matching when the mass ratioof red clay membrane urea is 5:7,which can lengthen the eluviationing time for 11 days, reduce the nitrogen eluviationing loss by 16.12%; the amount of the clay quality has no use to lengthen the eluviationing time and the result is not obvious; when the quality ratio of urea and gypsum is 5:8,it can lengthen the eluviationing time for 8 days, reduce the nitrogen eluviationing loss by 23.86%;when the quality ratio of urea and gypsum is 5:7,it can lengthen the eluviationing time for 30 days, reduce the nitrogen eluviationing loss by 16.58% when the contrast urea N is all eluviated out ; it is the optimum matching association; When the quality ratio of the urea and the sulfur is 5:6, which is a optimum proportion ,it can l

根据对淋溶时间、经济成本等的对比，经过方差分析，找出了不同包裹材料的最佳质量比的搭配组合：红胶泥包膜尿素的质量比是5：7时最好，可以延长淋溶时间11天，减少氮素淋溶损失16.12%；粘土质量的多少对延长尿素的释放时间作用不大，效果不明显；石膏和尿素两者的最佳质量比是5：8时，可以延长淋溶时间8天，减少23.86%的氮素淋溶损失；硼砂和尿素的质量比是5：7可以延长淋溶时间30天，当对照尿素N素全部淋出时，减少16.58%的氮素淋出，是最优

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。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。