对数的

To improve the precision of tree biomass parameter calculation, this paper explicates the principle, method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method. It gives the formula to calculate the variance and covariance estimated parameters, and reveals the essence of logarithmic linearization regression of power function.

为了提高林木生物量参数的计算精度，根据林木相对生长公式，阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程；给出计算参数估值之方差与协方差的公式；揭示幂函数对数线性化回归的本质。

The sequence is represented in a way that permits lookup, insertion, and removal of an arbitrary element with a number of operations proportional to the logarithm of the number of elements in the sequence.

顺序是代表证的方式查找，插入和删除任意一个元素的行动成正比的序列中对数数的元素。

These are the most important array sorting functions, and can be very useful at times, but don't overuse them. If you're getting data from a database, you'll probably won't want to use an array sorting function, but instead add the sorting code to your SQL query.

这些事最主要的对数组进行排序的函数，但是也不要过渡的使用，当你从数据库取值的时候，你千万不要用这些函数去进行排序，因为SQL有排序语句。

To overcome the problem of limited market data on forward credit spread quotes, and to increase the accuracy in estimation, we propose a multinomial tree model in this paper and apply it on both European and Bermudan CDSwaptions.

相较过去文献上建构多元树必须配适标的资产对数报酬率之分配的多阶动差，本文建构多元树的方法仅需配适较少的动差，即可建构出任意分枝个数的多元树模型。

The user's utility is a function of his data throughput, thus the bandwidth resource utilization problem is modeled as a utility based constrained maximization problem, called a system problem.

通过设置站点吞吐量的对数效用函数，将带宽资源的有效利用问题建模为系统效用最大化问题；应用最优化理论将此系统问题等效为可分布式求解的用户问题，即各站点只须独立选择最大化其净效用的竞争参数，则系统整体效用也获得最大化。

In this dissertation, two new proxy signature schemes from bilinear pairing are proposed, which are all based on discrete logarithm problem on GDH group. In the first scheme, the proxy signing ability can be revoked during the period of validity. Then, the malicious signer can not sign messages any more. Moreover, in this scheme secure channels are not needed.

本文基于GDH群的离散对数问题结合短签名的特点设计了两个代理签名体制，第一个体制可以在证书的有效期内撤销代理签名权，从而防止不诚实的代理签名者继续签名，而且无需安全信道。

In their logistic regression models to establish odds ratios, the authors adjusted for demographics; other established risk factors for melanoma, including numbers of nevi and extent of freckling; and any use of exogenous hormones.

在他们确立优势比的对数回归模型中，作者 adjusted for demographics ；确定的其他黑素瘤危险因子包括痣的个数和大小，还有外源激素的使用情况。

This paper proves strictly the soundness of a formula of the logarithm function of a complex variable and points out the wrong conclusion concerning it in《Engineering Mathematics-Functions of a Complex Variable》compiled by the Mathematics Teaching and Research Section of Xi an Jiaotong University.

本文严格证明了关于复变量对数函数的一个公式的正确性，同时指出了西安交通大学数学教研室编写的《工程数学———复变函数》一书中有关结论的错误。

This model can analyze the regression relation between covariate and log survival time, and its form and explanation of regression coefficient is close to the general linear regression equation, the explanation of analysis results is more simple, more direct and easier to understand than that of proportional hazard function model.

AFT模型研究协变量与对数生存时间之间的回归关系，模型的形式与对回归系数的解释与一般的线性回归方程相似，而对分析结果的解释则较比例风险回归模型简单、直观，更易于理解。

The results show that relationship between flow stress and strain rate is applied to hyperbolic sine equation in the hot compressive deformation of 6061 aluminum alloy; at the same time, relationship between logarithmic hyperbolic sine of its flow stre...

研究表明，6061铝合金热压缩塑性变形时的流变应力和应变速率之间的关系满足双曲正弦函数关系式；其热压缩塑性变形时流变应力的双曲正弦对数项与绝对温度倒数之间满足线性关系，其高温压缩变形受热激活能的控制。

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％。