对数

Through the discussion of computing formula for measuring high resistance by Mdoel NG82-1impact corrent galvanometer, it is discoverde that it is much casier to do calculation by natural logarithm .

通过对NG82－1型冲击电流计测高阻计算公式的讨论，找到用自然对数计算较为方便。

As a solution, a new gray-level value natural logarithm ratio range filter kernel is pointed out for the Bilateral filtering, a representative method of Neighborhood filters.

在此基础上针对具有代表性的双边滤波模型进行修改，提出新的灰度值自然对数比率相似函数模型。

The results indicate that the amount of chloride ion sedimentation is attenuated by the natural logarithm function of distance from external surface of the sample,and the corresponding attenuation rate is changed greatly by the ratio of water to cement and mineral admixture such as slag. Chloride ion is mainly deposited in surface zone under dry-wet cycle condition.

试验结果表明：混凝土内部不同位置处水溶性氯离子的沉积量与离表面的距离之间存在自然对数的衰减关系，且混凝土的水胶比和矿渣等因素对其衰减速率存在较大的影响。

The exterior variables such as the degree of government intervene, the degree of law and regulations, local credit, the enterprise prestige variables (natural logarithm of company asset, current ratio, speed ratio, net profit per share) are remarkably negative related to social moral risk behavior.

2企业外部变量中的政府干预程度、法治水平、地区信用、企业声誉变量(公司资产的自然对数、流动比率、速动比率、每股净利润)对企业道德风险行为的产生存在显著的负相关关系。

The soil pH, CEC and organic matter content ranged from 7.7 to 8.6, 11.9 to 28.7 cmolkg^(-1), and 3.0 to 27.9 gkg^(-1), and followed normal distribution, log-normal distribution, and negative binomial distribution, respectively. These three properties were significantly affected by land use type, landform, and soil type.

结果表明：黄土高原小流域土壤pH、CEC和有机质分别介于7.7~8.6、11.9~28.7cmolkg^(-1)和3.0~27.99kg^(-1)，分别服从正态分布、对数正态分布和负二项分布。3种土壤性质随地形、土地利用方式和土壤类型的不同差异很大。

The elliptic curve discrete logarithm of non singular elliptic curve over finite field has no efficient attack up to now, which made it cannot be widely applied in cryptography.

目前，在有限域上非奇异椭圆曲线离散对数问题还没有有效的攻击方法，使其在加密技术中得到了广泛应用。

And block entropy, Renyi entropy,nonadditive entropy also grow with system size, derivative of logarithm of fidelity diverge at critical point.

Fibonacci量子伊辛链和均匀量子伊辛链一样，协作参量的导数在相变点的峰值随系统增大作对数发散；而无序量子伊辛链的协作参量的导数在相变点的峰值不随系统的增大而增大。

Recently Blume and Easley(1992) find that nonrational trades can survive better than rational trades if nonrational trades' utility is closer to log-utility than their rational opponents'.

最近，Blume和Easley（1992）发现，如果非理性交易者的效用接近于竞争对手理性交易者的对数效用，那么非理性交易者能够比理性交易者生存得更好。

When normal distribution of subordinate function was considered, we can further deduce fussy reliable formulas that forces and intensities were lognormal distribution, that forces and intensities were weibull distribution, that forces were exponential distribution and intensities were normal distribution, that forces and intensities were exponential distribution. 3. Coincide methods of skip-ratio curve were gotten by deducing and skip-ratio functions of standard road in common use was gotten by theoretic and algebraic calculation.

并以此为基础选取了广义而精确的正态分布隶属函数，进一步推导了应力和强度均为对数正态分布时的模糊可靠性公式、应力和强度均为威布尔分布时的模糊可靠性公式、应力为正态分布和强度为威布尔分布时的模糊可靠性公式、应力为指数分布和强度为正态分布时的模糊可靠性公式、应力和强度均为指数分布时的模糊可靠性公式。

The normalized vector is used as the input of RBF NN, and target recognition is performed based on this, which leads to a satisfactory recognition result.

并对该特征向量进行对数归一化，将归一化的特征向量作为径向基函数神经网络的输入，在此基础上进行识别，达到较好的识别效果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。