查询词典 logarithm

By using the principle of least absolute deviation method , we will give a new priority method—least logarithm absolute deviation method.

利用最小一乘法原理，在层次分析中提出了一种新的排序方法——对数最小一乘法，并将其转化成线性规划问题求解，证明了对数最小一乘法的一些性质。

based on the analysis of regressing the experimental dada show: diffusion coefficient decreases as the increasing of absolute pressure in linear; increases in a way of logarithm with the varying rate of pressure.

对试验数据回归分析表明：木材水分扩散系数随绝对压力的增加呈线性减小；随压力变化速率的增加呈对数曲线增大。

Limits of technical index frequency: 100kHz~50GHz, depend on probe power limits:- 70~+44dBm(100pW~25W), depend on probe power probe: As compatible as probe of HP8480 series power dynamic limits: 50dB, 10dB pace takes indication unit: Absolute power: W, DBm; Relative to power: Per cent, DB resolution: In resolution of logarithm mode optional 0.1, 0.01 with 0.001dB; 1% what perhaps be complete scale in linear mode resolution, 0.1% with 0.01%.

技术指标频率规模：100kHz~50GHz，取决于探头功率规模：-70~+44dBm(100pW~25W)，取决于探头功率探头：与HP8480系列功率探头兼容动静规模：50dB，10dB步进显示单元：相对功率：W，dBm；相对功率：百分比，dB 分辨率：在对数模式可选择的分辨率0.1，0.01和0.001dB；或者在线性模式分辨率为全刻度的1%，0.1%和0.01%。

Given some probability exponential inequalities of maximal partial sums for sequences of NQD random variables, some Laws of Logarithm and Laws of the Iterated Logarithm for Nonidentity Pairwise NQD Sequences are obtained.

通过建立两两NQD随机变量列最大部分和的概率Levy型指数不等式，给出两两NQD列的Petrov型对数律与重对数律，文献中相应结果成为其特殊情形，并得到加强。

Returns the natural logarithm (base-e logarithm) of x .

返回 x 的自然对数。

The Discrete Logarithm Problem was analyzed. Based on the discrete logarithm in the prime field, and combined with the elliptic curve DLP in the limited domain, a new digital signature was brought up.

分析了离散对数问题，以素数域上的离散对数为基础，同时结合有限域上的椭圆曲线离散对数问题，提出一种新的数字签名方案，其安全性建立在离散对数算法上。

The first kind of the digital signature schemes is based on the discrete logarithm problem and second kind of the digital signature scheme is based on discrete logarithm and factorization problem, the third kind of the digital signature schemes is based on quadratic residue problem.

本文第一章对数字签名方案进行分类，根据数字签名方案所基于的数学问题，将签名方案分为：基于离散对数问题的数字签名方案，基于素因子分解问题的数字签名方案和基于二次剩余问题的签名方案。

In the shaly formation, it is nonlinear relationship between the logarithm of the resistivity index and the logarithm of water saturation. The saturation exponent changes with resistivity index, with different changes under different pore structure and shale conditions.

在泥质地层中，电阻率指数的对数与含水饱和度的对数之间是非线性关系，即饱和度指数随电阻率指数的变化而变化，而且不同孔隙结构、泥质条件下其变化不同。

The logarithm difference values of partition coefficients of the compounds in butyl ether/water and in cyclohexane/water system were used for the measurement of the Lewis acidity, while the logarithm difference values of partition coefficients in trichloromethane/water and in tetrachloromethane/water system were used for the measurement of the Lewis basicity, and they were used successfully to differentiate the relative strength of Lewis acidity and basicity for 59 benzene and its derivates.

以化合物在正丁醚/水和环己烷/水溶剂体系中分配系数的对数差作为酸性指数，以其在氯仿/水和四氯化碳/水溶剂体系分配系数的对数差作为碱性指数，提出了一种新的度量有机物Lewis酸碱性的方法，按此方法成功地区分了59种苯系物Lewis酸碱性的相对强弱；并成功地将上述酸碱性指数引入定量结构—性质/活性相关研究之中，探讨了苯系物的正辛醇/水分配系数、水溶解度和土壤有机碳吸附系数等常见理化性质与其Lewis酸碱性间的相关性并建立了相应的定量模型，发现它们之间存在良好的相关性。

The results of this study indicate that: 1 the post–surcharge secant secondary compression index decrease with the increase in surcharge ratio; 2 the amended post-surcharge secant secondary compression index also decrease with the increase in surcharge ratio; 3 time at which secondary compression reappears increases with the increase in surcharge ratio; 4 the post-surcharge secondary compression strain rate under the same final load with surcharging and without surcharging have a linear logarithm to logarithm relationship.

根据研究的结果显示：1超载比愈大，后超载割线二次压缩指数所受到的折减愈大，表示对软弱粘土的二次压缩沉陷量改良效果愈好；2修正之后超载割线二次压缩指数亦随超载比的增加而折减；3二次压缩再现时间与超载比的关系显示，增加超载比会延迟二次压缩再现的时间并可将分析结果以一均值曲线表示； 4对后超载应变速率分析发现在相同最终载重，未受超载作用与受超载作用的二次压缩应变速率呈现一双对数的线性关系。

In this paper, the requirement analysis, design and implementation of the system are introduced in detail.

此论文详细介绍了系统的需求分析，系统设计和具体实现。

In the context of economic globalization is increasingly deepening, China's economy can not be spared.

在经济全球化日益加深的背景下，中国经济不可能做到独善其身。