| 1. | By taking these spatial points as initial guess , all exact real solutions withi n a certain range of variables are found using unrestraint optimization
以这些空间点为初始值，利用无约束优化，得到在一定值范围内的原方程组的全部精确实数解。 |
| 2. | Analyzing the performance curves of pumps and network in a variable flow pumping system , concluding the influence factors of energy saving and the optimal ranges of variable frequency drive ( vfd )
摘要通过分析变频水泵及管网系统在变工况下的特性曲线，得出影响水泵变频节能效果的主要因素和变频调速的适用范围。 |
| 3. | " after adjusting the results for a wide range of variables , we concluded that the link between symptom - free children and a diet rich in fruity vegetables and fish was statistically significant " says dr chatzi
博士说： “调整结果位大范围的变量，我们认为，无症状孩子与饮食中富含‘水果蔬菜’和鱼的关联性有显著的统计学意义。 ” |
| 4. | From the viewpoint of minimization of the loss of opportunity cost , the thesis analyzes two different rational ranges of variable output corresponding with two different ways by which the production is divided into three intervals in chapter 2
第二章从机会成本损失最小化的角度出发，对可变产量的三个阶段的两种划分方法所确定的两种不同的理性产出范围进行了分析 |
| 5. | The results show that the rational range of variable output is between the quantity of output when marginal cost is lest of all and the quantity of output which is decided by marginal cost when it equals the expectation price of the product in market
分析结果表明，可变产量的理性产出范围应在最小边际成本所对应的产出量到边际成本与产品的预期价格相等所对应的产出量之间 |
| 6. | Chaotic variables have not uniform distribution , and it is worse that chaotic variables are very sensitive to the change of initial value and the defining range of variable ; therefore it is uncertain that the optimal solution can be found . all those shortcomings above bring numerous problems in the process of optimization
通过分析揭示了混沌优化的本质，首先混沌算子在变量定义域上并非均匀分布，所以能否找到最优解是不确定的；再之混沌优化对初值的变化和变量定义域的变化特别敏感，这些给优化过程带来许多难以确定的问题。 |
| 7. | The researches of this thesis are carried out around the study and development of adjustable speed digital drive system of permanent magnet synchronous motor ( pmsm ) with wide range of variable speed and high performance , including the analysis of the system structure , the intelligent control method and the design of the system
本论文的主要工作围绕研制高性能、宽调速永磁同步电动机的全数字交流控制系统为工程背景展开，对控制系统的体系结构、提高控制系统精度与性能的控制方法、以及软硬件设计等问题进行了研究。 |
| 8. | There are many faults in the chaotic optimization algorithm . to solve these problems , a new method named " bisection - interpolation approach " is put forward . it has numerous advantages such as ergodicity , uniform distribution , not sensitive to the change of initial value , not sensitive to the defining range of variable , not requiring the continuation and not requiring differential of the optimized object
该算法和混饨一样具有遍历性的特点，且变量均匀分布于定义域，对函数的定义域变化和初值的选定都不敏感，同样也不需要函数连续、可微，对优化对象几乎没有特别要求，从而避兔混池优化算法的缺点。 |
