增长的曲线

The curve of growth is used as mathematical model to imitate the change law on mine gushed water quantity.

运用增长曲线数学模型模拟矿井涌水量的变化规律，解决了矿井涌水量的模型描述及矿井最大涌水量的预测，为矿井合理配置提供了科学的依据。

We get the necessary and sufficient conditions about admissibility for linear estimators of estimable function among the inhomogeneous linear class.

利用矩阵的向量化方法，研究了带线性约束的增长曲线模型中可估函数的线性估计在非齐次线性估计类中可容许的充要条件。

Chapter Four deals with the linear admissible minimax estimators of linear estimable function of parameter matrix in the given linear estimator for a general growth curve model.

第四章讨论了一般增长曲线模型参数阵的线性可估函数在给定的线性估计类中的容许Minimax估计，并给出了具体的表达式。

This paper uses the Laffer curve model to analyze the function among tax rate, tax revenue and industrial economic developments, and believes that effective industrial tax policies could guide all kinds of resources into industries with competitive advantages to upgrade and optimize the industrial structure to make the economy develop healthy.

本文在用拉弗曲线模型分析了税率与税收收入、产业经济增长之间存在的函数关系之后，认为有效的产业税收政策，可以引导资源要素流向民族地区中具有竞争优势的产业，使产业结构不断优化和升级，进一步促进经济的健康发展。

In the end, it is further developed of the inverse U hypothesis from monocycle condition to multi-cycle condition with a new hypothesis, which is called cyclical fluctuation of regional disparity.

在新古典经济学得出的增长轨迹基础上，利用简化的两地区逻辑曲线初步证明"倒U假说"的成立；并进一步讨论这一假说在多周期情形下的一个拓展，即地区差距的周期波动。

On the base, using the knowledge about matrix operations, we study the admissibility of parameter estimators in multilinear model and growth curve model.

在此基础上，利用矩阵运算的知识，进一步研究了多元线性模型和增长曲线模型中参数估计的可容许性，获得了参数估计在指定的估计类和全体估计类中可容许的充要条件或充分条件。

Considering linear and O-linear predictable variables, the author investigates optimal prediction problems by the trace of matrix. A few necessary conditions are derived and accordingly optimal linear and optimal O-linear unbiased predictors, which are unique with probabitity one, are obtained respectively by the author.

对于一类线性可预测变量和Φ-线性可预测变量，作者在矩阵迹意义下研究了一般增长曲线模型中最优预测问题，找到了其存在最优预测的几个必要条件，并在给定的条件下分别得到了最优线性无偏预测和最优Φ-线性无偏预测，而且还证明了它们在几乎处处意义下的唯一性。

The results showed that Cupressus funebris , Cunninghamia lanceolala + Quercus acuissima belonged to the declining populations, whereas, Cupressus funebris + Quercus fabric , Pinus massoniana + Cupressus funebris and Quercus acuissima + Quercus fabric were growing populations, and Symplocos szechumensis + Lindera setchuenensis , Pinus massoniana + Symplocos szechumensis and Pinus massoniana kept stationary.

由种群的大小级结构动态和种群的存活曲线分析了各优势种群的结构格局，发现柏木林、杉木麻栎林种群为下降种群，马尾松林、马尾松川灰木林、川灰木山胡椒林种群为稳定种群，柏木白栎林、马尾松柏木林、麻栎白栎林种群为增长种群。

The kinetically controlled molecular weight profiles and relative initiation versus propagation rates of REMP resulted in polymer Mw values that increased with decreasing initial concentrations.

动力学控制的分子质量曲线和 REMP 相对初始与增长速率的比值导致聚合物 Mw 值随着初始浓度的降低而增加。

By sampling and statistical analysis to rape pods at different stages, with the different parts of the inflore-scences, the results showed that the reation of growing of rape pods and seeds and time after blossom followed the type of S growth curve as Y=c/[1+e~] .

通过对不同花序部位开花后的油菜角果分期取样考查及其统计分析表明：油菜角果和种子的增长与开花后时间的关系适合用S型生长曲线Y=C/1+e~来表示。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐