查询词典 systematic sampling

The pathogen of the outbreak of acute icteric hepatitis was genotype IV HEV. There is a close relationship between these positive strains and Jap strain. The use of a new highly sensitive RT-PCR primer set and a timely sampling promotes to obtain high positive HEV RNA rate.

本次急性戊型肝炎暴发流行由戊型肝炎病毒基因型Ⅳ型导致，暴发毒株与日本株有更近的亲缘关系；高灵敏度引物和取样时机是提高戊型肝炎病毒RNA检出率的前提。

In the case where a set of observations can be assumed to be from an independent and identically distributed population, this can be implemented by constructing a number of resamples of the observed dataset (and of equal size to the observed dataset), each of which is obtained by random sampling with replacement from the original dataset.

与解析方法相比，bootstrapping 的优点在于，它无需对分布特性做严格的假定就能进行推断分析，这是因为它使用的分布就是真实数据的分布。

Methods 12 healthy male SD rats were anaesthetized and heparinised. The right carotid artery, jugular vein and two distal ileocolic veins were cannulated for blood transfusion, volume compensation, drug infusion, and blood sampling respectively.

方法健康雄性SD大鼠l2只，作右侧颈动脉、颈静脉插管；开腹后，经回结肠静脉作门静脉插管，分别用以输血、输液、给药、留样、检测等。

An adaptive sampling method, which is based on the saliency map of the image, is also adopted to construct the searching space.

实验结果表明，算法对大面积的图像缺失的修补和复杂背景图像上多余物体的去除，都达到了很好的效果。

After taking experiments on PPC, it shows that the performance can be improved more than 50% for comparison of the supper sampling with satisfying image quality and the table size is only about 10% of the Walter Algorithm.

通过手持设备上的实验证明，与传统的过采样方式相比，在不影响图像质量的前提下，性能提高了50％，与Walter的编码滤波器相比，查找表的大小缩减到了原来的10％左右，从而证明了此方案的可行性和高效性。

Experimental results show that the algorithm has a fine imperceptivity of watermark embedded and is strongly robust to attacks such as re-sampling, color dithering, smoothing, noise adding, and JPEG-compression.

实验结果表明：该算法具有很好的水印不可见性，对常见的图像处理攻击：如重采样、颜色抖动、平滑、加噪声和 JPEG 压缩等具有很强的稳健性。

For reliability analysis of implicit limit state function, an improved line sampling method is presented on the basis of sample simulation in the failure region.

针对隐式极限状态方程的可靠性分析，提出了一种基于失效域样本模拟的高效线抽样法。

This paper research all kind of action of a middle intranet with ameliorative sampling algorithms based on RMON, then put forward an improvability scheme.

本文应用RMON技术研究了一个中型园区网的各种网络行为，并提出了优化网络性能的措施。

For stratified and cluster sampling with inappreciable differences, estimate precision becomes poor.

对于分层抽样和整群抽样，当群体间的差异、群内个体间差异均不显著时，其估计精度往往都很差。

The sampling frequency can be used to formulate an appropriate plan in order to avoid the blindness and incertitude.

用该方法计算的水质采样频率，可为制定水质监测方案提供参考依据，避免制定水质监测方法的盲目性和不确定性。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我