水平曲线

According to these, method and formula were proposed. A numerical example and corresponding stress-MSD probability curve were given for the proposed approach.

给出了具体的方法介绍和理论推导，并给出了一个具体的计算示例，得到MSD产生概率与应力水平的关系曲线。

In order to deal with the stochastic characters of fault location, fault type, fault clearing time, and load level etc., this paper proposed a transient stability probability analysis method based on curve fitting.

考虑电力系统发生故障时，故障位置、故障类型、故障切除时间以及负荷水平都具有随机性，提出了一种基于曲线拟合的暂态稳定概率评估方法。

An extra force is produced using the piecewise-constant MS model during the segmenting. In each time step, the additional force is added to reinitialize the level set function, advance the speed of the curve evolution. Otherwise, a nonlinear function Ψ is introduced to instead of u+ and u-for edge preserving in MS model.

该方法在分割过程中利用分段常数MS模型产生一种驱动力，在每个时间间隔加入这种驱动力来推动水平集函数的进化，提高曲线演化速度；另外，通过在MS模型中引入一个非线性函数Ψ代替u+和u-实现保边。

Since in some instance, the variance of response variable might be changeable along withthe alteration of explanatory variable, in the procedure of model constructing, a fixedeffects model should be considered firstly, then the random effects model or randomcoefficient model when necessary. The best fit model should be chosen by comparing thealterations of between-study variance and residual variance, as well as their relationshipswith covariates.

基于各研究中因变量与自变量间的曲线形状可能存在较大差异，建模时可依次考虑固定效应模型、随机效应模型和带协变量的随机系数模型，并观察研究水平的方差与残差方差的变化，以及与协变量的关系，从而选择最优模型。

Endowed with a Riemannian metric derived from the gray scale information of a given image, the image space became a Riemannian manifold. On this Riemannian manifold, we evolved a curve by the mean curvature flow using the level set methods.

在图像空间上直接赋予一种由图像灰度信息导出的黎曼度量，使之成为黎曼流形，然后在此黎曼流形上利用水平集方法对曲线以平均曲率流进行演化。

Firstly, the row crop and background were segmented by the excess green value. Secondly, the image strips were divided by crop image horizontally and the position was calculated by detecting the peak on the curve resulting from vertical projection of strips. Finally, the crop rows center lines were accomplished by robust regression.

对作物图像运用过绿特征值分割作物和背景，将得到过绿特征图像划分为若干水平图像条，对图像条过绿特征值进行垂直投影，求取投影曲线上突出峰点的位置；利用稳健回归法对位置点进行线性拟合得到作物的行中心线。

As to strong nonlinear analysis, deformation of local collapse can be considered by increasing horizontal division which it can make a descent segment of skeleton curve more obviously.

对于强非线性分析，增加水平划分可以考虑局部的破坏变形，使骨架曲线下降段明显。

The model is with the solution by level set method, therefore the topology of the evolving curve can be changed.

利用水平集方法求解该模型，解决了演化曲线拓扑可变的问题。

Benchmark yield curves in the major financial centers had been pushed to quite low levels, setting the stage for a snapback in mature government bond yields when signs of stronger economic growth emerged (Table 1.1). The March 2003 GFSR highlighted the risk that such an increase in yields would trigger an unwinding of carry trades; indeed, the rebound in yields evident in all major markets since mid-June appears to have been accentuated by an unwinding of such trades.

主要金融中心的各种基准收益曲线曾被下降到相当低的水平，为在经济出现更强劲增长时迅速恢复到期的政府债券收益创造了条件（表1--1）。2003年3月份的《全球金融稳定报告》突出了这种收益增长会触发扩大结转交易的风险；确实，现在看来，自6月中旬以来，在所有主要市场上，扩大这种交易加强了明显的收益反弹。

This paper also offers an approximate solution of the resonance curve for stationary state vibration of the single-degree-of-freedom system.

通过对单自由度隔震体系的试验分析，给出了在不同扰力水平下隔震体系稳态振动的共振曲线近似计算公式。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。