| 1. | Interval arithmetic and static interval finite element method
区间运算和静力区间有限元 |
| 2. | It is simple and practical to deal with uncertain structure via interval arithmetic
摘要区间分析用于结构不确定性问题的处理，具有简单实用的优点。 |
| 3. | All kinds of method used around world and presented approach based on interval arithmetic and quad tree was presented
总结了消除偏置曲线自交点的各种算法的优缺点，提出了基于区间算术和四叉树的算法。 |
| 4. | And the numerical characteristics of natural frequency are derived by using the fuzzy factor method and the principles of interval arithmetic
利用模糊因子法和区间运算推导出结构固有频率的主值和最大、最小值的计算表达式。 |
| 5. | Combining the interval arithmetic with the traditional finite element method ( fem ) , the static governing equations of interval finite element method can be set up to get the interval static response of structure directly
将区间分析和适当的有限元方法相结合，可建立直接求解静力响应区间的区间有限元控制方程。 |
| 6. | Then , using recursive arithmetic calculated reliability indices for directory tree , the method was realized by vb program ; the other is a method of reliability evaluation by interval arithmetic , which is the use of interval arithmetic to evaluate reliability , and the computation theory is also given . during the calculation , interval number replaced the component " s parameter and it takes into consideration the uncertainty of all of the parameters . in the study of power distribution system configuration , a new configuration model is set up which takes into account simultaneously the losses minimization and system reliability , then improved genetic arithmetic is described detail and of advantage for solving this problem
在配电网可靠性评估的研究中，提出了两种实用的配电网可靠性评估方法：其一是利用网络分层和递归算法理论，使用高级语言进行程序设计，提出了一种基于vb编程的配电网可靠性评估方法，该方法通过程序实现了网络拓扑结构的分层等效和可靠性指标的递归计算，使整个计算过程得到了简化，并且界面窗口的可视化，使得评估过程便捷、形象；其二是提出了一种基于区间算法的配电网可靠性评估方法，该方法是一种利用区间理论计算配电系统可靠性的不确定性评估方法；文章给出了区间运算的原理；讨论了配电系统中区间数据的来源途径，并用区间数代替元件的可靠性参数，对辐射形配电网进行了可靠性评估。 |
| 7. | Using the f - ahp model algorithms that based on fuzzy number and interval arithmetic solve the multi - attributes and fuzzy problems of agricultural project appraisal . using entropy weight ranking of f - ahp is more efficiency . using a - cut and index of optimism x . estimate the uncertainty and preference of decision makers
用基于模糊数、区间数运算法则的f - ahp模型解决了农业项目投资评估的多属性及模糊性问题；采用熵权使得排序更加科学；通过置信度与乐观指数考虑了不确定性及决策者的风险态度。 |
| 8. | Based on the analytic hierarchy process ( ahp ) , the method uses triangle fuzzy numbers to establish judgment matrix , and then the entropy weight of the project to be tendered is obtained by fuzzy interval arithmetic in accordance with the confidence level sets and optimistic index ; with which the appropriate project can be e1ected at last
在传统层次分析法基础上，采用三角模糊数来建立判断矩阵，根据置信水平截集和乐观指数，由模糊区间运算得出拟投标的工程项目熵权，根据其大小来选择合适的项目。 |
