查询词典 variation coefficient

The concrete work and main contribution are as follows:(1) The index indicating transfer capability homogeneousness is defined, and the new terms like homogeneous grid, grid according with economic flow are put forward. These new concepts describe the degree in which transfer capability is utilized, and they provide the standard for ideal grid whose transfer capability and power generation dispatching economy are in phase. So, new idea is introduced in transfer capability analysis.(2) The multi-objective function with generation cost and transfer capability homogeneousness weighted is constructed. The relationship between system existing generation dispatching and transfer capability is revealed through comparative analysis between security economic dispatch and security homogeneous dispatch, and the variation rule analysis between generation cost and transfer capability homogeneousness with the change of weighting coefficient.(3) Example analyses demonstrate that the difference between specific power system with ideal instance can be identified effectively using the above concepts and method.

具体工作和贡献主要体现在：(1)定义了衡量电网输电能力均匀性分布的指标，提出均匀电网、符合经济流电网的新概念，以描述电网输电能力被利用的程度，并给出输电能力和发电调度经济性相协调的理想电网标准，在输电能力分析评判领域引入了新观点；(2)构造了发电费用与输电均匀性加权的多目标函数，通过对安全经济调度与安全均匀调度的对比分析，以及权系数变化过程中发电费用与输电均匀性的变化规律分析，揭示了系统现存发电调度与输电能力之间的依赖关系；(3)大量分析表明，利用上述概念和方法可有效识别系统在特定模式下与符合经济流电网的偏差程度。

The result of variance analysis and regression showed that leaf area is the most variable index, and the others share a close coefficient of variation, about half of that in leaf area.

结果表明，叶面积的变异最大，其余4项指标变异程度接近，变异系数约为叶面积变异系数的1/2。

In this work, the performance of six-needle steel electrodes and four-needle graphite electrodes in detecting bio-impedance was compared. Also, coefficients of variability were applied to assess the stability of the system. Experiment showed that the coefficient of variation of the system was less than 6% if the frequency was above 1 kHz. Intra class correlation procedures were applied to assess the reliability of the system due to temperature variability. Values of Ri, Re, C in the system model were reliable with intra class correlations of more than 65%.

探讨了检测电极设计方案，比较分析了六钢针电极和四针石墨电极的性能，同时通过试验证明了系统的稳定性，1 kHz以上系统的变异系数CV＜6%；以组内相关系数ICC来评定在不同温度下系统的可靠性，系统模型中Ri、Re、C的ICC均大于65%，系统稳定可靠。

A reasonable simplified acceleration is developed, and by which variation of the motion response of the free-standing equipment with the kinetic friction coefficient and explosion seism parameters is obtained.

并根据其特点，提出了合理简化加速度波，采用该加速度波形，分析得到了浮放设备运动响应与动摩擦系数、爆炸地运动参数的关系。

Results The within-run coefficient of variation of five kinds of enzymatic activity, with Abbott reagents: routine method were 0.48%-1.06%, FlexRate method were 0.23%-0.48%; with Leadman reagents: routine method were 0.63%-1.14%, FlexRate method were

结果 5种酶用雅培试剂检测批内变异系数：常规法为0.48%~1.06%，FlexRate法为0.23%~0.48%；利德曼试剂检测批内CV：常规法为0.63%~1.14%，FlexRate法为

In the study on the relationship between different grid sizes and variogram of the pupae, the variation in the range, the intensity of local spatial continuity and the sill was very low or non-existent when the grid size was 5m, 6m or 7m, the value of the decisive coefficient was more bigger when the grid size was 5m, so, it is ideal grid size.

对不同样方大小的变异曲线图进行比较得知：样方边长分别为5、6、7m时，变程、空间局部连续性强度和基台值的变化幅度均很小，几乎相等，而样方边长为5m时的决定系数较大，此样方为最适样方大小。

Among the four paper formation assessment methods, i.e., coefficient of variation, varience (S^2), M/K formation index, and modified all-pairs score, the COV and look-through judgements are most affected by mean light absorbance. Under similar mean light absorbance renditions, all four methods gave similar results.

吸光度变异系数、影像灰阶变异数(S^2)、M/K交织指数及目测修正成对评分法四种纸张交织评估法中，变异系数及目测法受纸样平均吸光度之影响较大，而平均吸光度相当时，四种评估法所得之结果相近。

The coefficient of variation CV was lower than 5%, and comparing with that of ektacytometry, we found that there was a good correlation between the measuring results of the two methods.

该测量方法虽受红细胞压积和悬浮介质电导率的影响和限制，但只要在仪器测量范围内，严格控制压积的一致性，其测量的重复性和准确性是可以保证的。

The range of Simple match coefficient was from 0.5877 to 0.9868 and the range of average was from 0.6732 to 0.7653,with the total average of 0.7237.The result indicated that the soybean population was with lower genetic variation.

品种间的遗传相似系数变化范围为0.5877～0.9868，平均值变化范围为0.6732～0.7653，总体平均值为0.7237，遗传相似系数较高，说明材料间遗传变异较小。

In order to make ET estimated conveniently, this research analyzed the correlation between water surface evaporation (E0) and crop evapotranspiration measured by large scale lysimeter, and the variation of evaporation coefficient.

为了更方便地估算作物蒸发蒸腾量，以大型称重式蒸渗仪实测的冬小麦蒸发蒸腾量为依据，分析了水面蒸发量(E0)与实测蒸发蒸腾量的相关性，并研究了蒸发系数的变化规律。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。