对数函数 meaning in Chinese
log function
logarithmic function
Examples
- The logarithmic function is defined as the inverse of the exponential function .
对数函数是作为指数函数的反函数来定义的。 - Provides constants and static methods for trigonometric , logarithmic , and other common mathematical functions
为三角函数、对数函数和其他通用数学函数提供常数和静态方法。 - In this paper , we first analyze the input and output as well as cost - benefit rate of chinese livestock industry by the example of hog , beef , mutton and dairy cow . then , we choose the samples from different regions in different time , use the stochastic production frontier suggested by battese and coelli ( 1992 ) , which is aimed at the panel data ( balanced or unbalanced ) , and make the econometric analysis for the growth of hog , beef , mutton , and dairy cow . different from the former research for livestock industry , the efficiency measurement theory is introdiced into the growth model and the tfp is dissolved into technical advancement , technological efficiency and residual , the translog production function is used to make the estimation more precised
本文首先以生猪，肉牛、肉羊和奶牛为例对近年来我国畜牧业的投入产出和成本收益状况进行了分析，然后采用battese和coelli在1992年提出的针对混合数据( paneldata )的随机边界生产函数形式，在不同地区选取一定的样本，利用样本省的时间序列与截面混合数据，对生猪，肉牛，肉羊和奶牛的增长因素进行了分析，与以往对于畜牧业增长研究不同的是，将效率测算理论引入生产增长模型，把全要素生产率分解为技术进步、技术效率和残差项，并采取了更加符合实际的超越对数函数形式，使传统上使用的索洛余值法得到改进，更深层次的剖析了我国畜牧业目前的增长方式。 - In addition to the known characteristics of type v intermittency , such as the mechanism of the border - collision bifurcation and the logarithmic scaling behavior of the averaged laminar lengths , a new characteristic of type v iritermittency discovered in this system is the so - called " prelude phase - locking staircase to type v intermittency " , which does not show the traditional devil ' s staircase form
除了v型阵发的已知特征，如由边界碰撞分岔导致周期轨道失稳，以及具有对数函数形式的平均层流相长度标度律等等之外，在这个系统中发现的一个v型阵发新特征是非传统魔梯形式的v型阵发前奏锁相阶梯。 - According to the problem that the recovery rate is traditional treated as a constant or an independent stochastic variable by the classical credit risk pricing and management model , and problem that the negative correlation between the default probability and recovery rate is always neglected , this dissertation gets the exponential and logarithm regression models of default probablilty and recovery rate based on some empirical researches , and improves on several broadly applied credit risk models , such as structural hazard rate model , affine structure model , convertible bond pricing model and credit metrics model , and introduce the negative correlation between
针对传统的信用风险定价模型及信用风险管理模型将违约回收率看成是一个外生的常数或是一个独立的随机变量,而忽略回收率和违约概率之间的负相关性这一问题,本文应用相关实证研究得到了违约概率和回收率的指数和对数回归模型,并对应用非常广泛的结构化风险率模型、仿射结构模型、可转换债券定价模型和creditmetrics模型进行了改进和拓展,在新模型中应用指数和对数函数引入了这两个变量之间的负相关性。