查询词典 logistic

Compared with gompertz growth function, logistic growth function has the inflection point high and the symmetry characteristics.

逻辑生长函数相对于龚珀兹生长函数具有拐点高和对称性的特点，采用逻辑生长函数形式的功效函数法求解混合多目标规划问题具有形式简单、计算量小、符合实际的优点。

The classical logistic equation is generalized to a new model with power exponent to the rate of growth of the population.

本作品将经典的逻辑斯蒂人口增长模型改进为具有幂律型增长因子的更一般形式，使其能够更加适用于现实中复杂的人口增长问题，并选用相应适用的幂律指数数值进行了对我国大陆，部分省区、直辖市及县区的人口分布规律的实证。

Logistic equation, growth of the population, differential equation, power exponent.

逻辑斯蒂方程，人口增长，微分方程，幂律指数

Besides the natural death and birth,the population is controlled by preyer and other external disturbance.

自然界中，小型动物的生长满足一类logistic模型，除了自身繁殖死亡外，其数量改变在很大程度上受捕食者和其他外界因素的限制。

It chooses the logit probability unit of allocation cash dividend as the substitute variable of allocation inclination, the ratio of ownership to control rights, the properties of the controlling shareholders and the character of group controlling as the substitute variables of the controlling shareholders' characteristics. Based on these variables, the regression model is established.

在股利分配倾向研究中，本文采用Logistic回归分析方法，以是否分配现金股利的logit概率单位作为股利分配倾向的替代变量，以所有权／控制权比例、控股股东性质和集团控制性质作为控股股东特征的替代变量，并加入其他影响因素构建回归模型进行分析。

The correct ratio of identification in Logostic model and Probit model are both achieve a high level of 97.14%.

在最优判别临界值下，Logistic和Probit甄别模型的判别准确率均达到了97.14%的高水平。

Moreover,the ordered logistic regress is proved better than ordered probit regress by the test of goodness of fit...

使用积累线性模型建立的证券单笔交易模型具有良好的应用前景。

Descriptive analysis, one-way ANOVA, Pearson product moment correlation, multiple regression and logistic regression were used for data analysis.

所得资料以描述性统计、one-way ANOVA、皮尔逊积差相关、多元回归及逻辑回归检定。

No difference of the occurrence of pyemia between the normal group and the MEFV mutant group was observed.

卡方检验结果显示，MEFV基因突变组脓毒症发生率与正常组之间的差异无统计学意义(P＞0.05)，尚不能认为有MEFV基因突变的病人烧伤后的脓毒症发生率高；非条件logistic回归分析表明，年龄和烧伤面积是影响烧伤病人预后的主要因素，而是否有MEFV基因突变尚不能确定为直接的影响因素。3。

This model's superiority was that its dependent structure was nonsymmetric. Thus we can use this model to solve many engineering design questions. We use this new model to reanalyze the design water level of the Wusong station.

三元嵌套Logistic模型的明显优点就是相关结构的非对称性，这种非对称结构更符合实际工程上多荷载的相关关系，从而为解决大量实际问题提供了理论依据。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。