指数曲线

This paper is about how to establish the parallel frame of curves in R~n by using the method of exponential matrix function.

本文介绍了如何用指数矩阵函数的方法建立R~n中曲线的平行标架，用此种方法可以很容易建立任意维数空间中曲线的平行标架。

In order to analyze rheological property and establish constitutive model of Q_2 loess, a series of uniaxial creep experiments on different water content are done .The creep test curves and stress-strain isochronism curves are drawed with the result of experiments and conclusions are reached from the curves. The creep performance of Q_2 loess is different under the different stress level. In the different time the stress-strain isochronism curve has obvious inflection point namely yield stress and the yield stress reduces along with the increase of water content, which can be described by exponential function.

为了分析黄土的流变特性和建立相应的本构模型，本文首先根据对不同含水量的Q_2黄土进行的一系列单轴应力条件的室内蠕变试验结果，分析总结了Q_2黄土蠕变特征和应力—应变等时曲线特征，得出Q_2黄土在不同的应力水平下蠕变变形表现形式不同；在不同的时刻应力—应变等时曲线存在有较明显的拐点，拐点所对应的应力即为屈服应力，屈服应力随着含水量的增大而呈指数形式降低；Q_2黄土可近似看成一种线性粘弹塑性体。

To evaluate the relationship between concentrations and electroencephalographic indices, two different pharmacodynamic models were applied: a conventional model based on a single sigmoidal curve, and a novel model based on two sigmoidal curves for BIS and NCT values with and without burst suppression.

为了评价浓度和脑电指数的关系，我们使用了两种不同的药效学模型来记录有和没有爆发性抑制时的 BIS 和 NCT 值：一种是基于单 S 型曲线的传统模型，另一种是基于双 S 型曲线的新型模型。

We also developed several experiential formula based on structural unit model for high-index surfaces, which can give an estimate of the energies of the high-index surfaces if the value of surface energy of (001),(110) or (111) are known.

作为各条曲线表面结构单元的两个低密勒指数面[001]晶带的(100)面和(110)面，[-110]晶带的(110)面和(111)面或(112)面其表面能值分别是对应曲线上的一个极小值点。

The survivorship curve accorded with exponential function and belonged to style Deevey Ⅱ〓.

仙湖苏铁种群存活曲线与指数模型拟合效果更好，属于Deevey Ⅱ〓型存活曲线。

The result makes clear, different dilute is the gemmiparous rate of fluid of vinegar of pH indicator wood and corn seed, gemmiparous index, gemmiparous situation existence is remarkable 3 curves correlativity, as long as emerge seedling presence is more remarkable 3 times the curve concerns, to sprouting time is reached orderly degree of influence with also have certain.

结果表明，不同稀释浓度的木醋液和玉米种子的发芽率、发芽指数、发芽势存在显著三次曲线相关关系，和出苗苗长存在较显著三次曲线关系，对出芽时间及整洁度也有一定的影响。

MethodsACCP antibody and RF were detected in serum samples of 90 RA patients, 30 other diseases patients and 35 healthy blood donors.The sensitivity,specificity,positive predictive value, negative predictive value, agreement rate and Youden's index of these parsmeters for the diangnosis of RA were analyzed.

方法对90例RA患者、30例其他疾病患者和35例健康对照组血清用ELISA法检测抗CCP抗体、免疫散射比浊法检测RF，比较2种抗体单独或联合检测对诊断RA的敏感性、特异性、阳性预测值、阴性预测值、总符合率及Youden指数；探讨抗CCP抗体和RF的相关性，通过绘制ROC曲线，计算ROC曲线下面积。

Based on the relation betweenthe current density and the activation energy, the glass-phase exponent 〓the relaxation of current density in 〓times window, the criticalcurrent in a certain criterion of electric field as a function oftemparature infixed field or field in fixed temprature were calculated.

利用交流磁化率测量，得到了Hg-1201和Hg-1223样品的不可逆线，同时系统地研究了交变磁场频率和振幅对交流磁化率损耗峰的影响，并用非线性磁通扩散的模型解释了这些实验结果，从中推得与温度、直流场和电流密度有关的磁通跳跃激活能，由与电流密度有关的激活能推出描述玻璃相的指数μ，在10-5秒～10-2秒时间内的电流密度弛豫，E-j曲线，一定电场判据下的临界电流密度与磁场和温度的关系，从E-j曲线可以看出确实存在&零电阻电流&的玻璃相。

Compared with these of fat-fed group,the body weight,blood glucose levels after oral glucose and the glucose area under curve,40min and 90min blood glucose levels after insulin injection subcutaneously and the glucose area under curve in the insulin tolerance test,the fasting serum insulin,insulin resistance index,serum cholesterol,triglyceride and lower density lipoprotein cholesterol decreased.

n-6脂肪酸组从第1~10周体重均较高脂组明显减轻，糖负荷后血糖和糖耐量试验中葡萄糖曲线下面积、皮下注射胰岛素后40 min9、0 min血糖及胰岛素耐量试验中葡萄糖曲线下面积、血清胰岛素、胰岛素抵抗指数、血清胆固醇、甘油三酯和低密度脂蛋白含量均较高脂组明显降低

Compared with these of fat-fed group, the body weight, blood glucose levels after oral glucose and the glucose area under curve, 40min and 90min blood glucose levels after insulin injection subcutaneously and the glucose area under curve in the insulin tolerance test, the fasting serum insulin, insulin resistance index, serum cholesterol, triglyceride and lower density lipoprotein cholesterol decreased, the fasting serum leptin, high density lipoprotein cholesterol and C18:2 were significantly increased in N-6 PUFAs group.

n-6脂肪酸组从第1~10周体重均较高脂组明显减轻，糖负荷后血糖和糖耐量试验中葡萄糖曲线下面积、皮下注射胰岛素后40min、90min血糖及胰岛素耐量试验中葡萄糖曲线下面积、血清胰岛素、胰岛素抵抗指数、血清胆固醇、甘油三酯和低密度脂蛋白含量均较高脂组明显降低；血清瘦素水平、高密度脂蛋白、18碳2烯酸较高脂组明显升高。

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。