| 1. | An example is demonstrated to illustrate the qualitative modeling procedure of the magnetization curve
文中以一实例说明磁化曲线定性模型的推导过程。 |
| 2. | Qualitative simulation is the result of integration of artificial intelligence and the concepts of simulation in recent years which foundation is the qualitative model of the knowledge
它是建立在基于知识的定性模型的基础上，将系统的内、外部知识和数据集成为一个可推理的模型。 |
| 3. | With integration of the information that is collected from inside and outside of this system it leads to a reasonable mechanism . each variable in the simulation is not only numerical value but also symbolized
每个变量的取值既有数值的，也有符号化的，最终通过求解该定性模型来获得对系统行为的定性描述。 |
| 4. | Through comparing the difference between the certainty mode and actual problems of empty car distribution , the essay gives a type of stochastic chance - constrained model to simulate the problem of actual empty - car distribution
摘要通过对比空车调整问题的确定性模型与实际问题之间的差异，提出一类随机机会约束模型来模拟实际空车调整问题。 |
| 5. | However , as a new simulation technique , qualitative simulation has encountered some difficulties during its history . the difficulty of formulating qualitative models has blocked the general application of qualitative simulation
但作为一门新的仿真理论，定性仿真在其发展过程中也遇到了一些困难，其中之一就是定性模型的建立比较困难，并因此制约着定性仿真的进一步推广和应用。 |
| 6. | The way to achieve the correct description of the system ' s behaviors is to resolve the qualitative mechanism . because of the uncompleted information the qualitative mechanism will produce spurious and ambiguous behaviors . the more uncertain and complicated of the real system the more redundant behaviors the qualitative simulation will produce
由于定性模型中包含系统的不完全知识，定性仿真会产生一些虚假( spurious )和二义( ambiguitious )的行为，当实际系统很复杂时，定性仿真会产生相当数量的多余行为。 |
| 7. | Based on researching deeply several reasoning methods available , a qualitative model for mechanism is provided according to the conceptual of confluence introduced by de . kleer and the constraint propagation to be carried out on it . this paper presents a qualitative reasoning frame supporting computer aided conceptual design for mechanism
在深入研究各种定性推理方法的基础上，利用dekleer的基于“流”的思想，建立了关于机构的定性模型，并在该定性模型之上进行约束传播，据此创建了一个基于定性推理的机构辅助概念设计框架。 |
| 8. | Due to the incompleteness of model library and uncertainty of modeling knowledge , qualitative compositional modeling is a process of " generate and test " during which the composed model must be modified and improved . there are two separate sub - tasks about cm , model composition and model simulation , which communicate with each other through qualitative differential equations ( qde )
定性模型的特点，决定了定性组合建模是一个需要重复调整和完善的迭代过程，建模与仿真是通过定性微分方程相关联的两个子任务，建模是仿真的基础，仿真是对建模结果的检验。 |
| 9. | The thesis focuses on the basic principles of fault diagnosis , qualitative modeling of lre , qualitative reasoning techniques and diagnosis mechanism for lre . in the thesis , the theoretical foundation of diagnosis based on component is expounded . on the basis of above works , a relation - based diagnosis method is proposed by considering the practical diagnosis problems for lre , and a diagnosis example is demonstrated
本文首先对基于定性模型诊断方法的分类、特点和研究现状进行了评述，接着分别研究了基于部件模型的诊断方法、基于定性键合图模型的诊断方法、基于时间因果图模型的诊断方法在液体火箭发动机上的应用，其内容涉及故障诊断基本理论与原理、发动机定性建模技术、定性推理技术以及针对液体火箭发动机的故障诊断机制和策略。 |
| 10. | Firstly , i expound the important meaning of the monitor of big dam safety and the development and the present condition of big dam deformation analysis . secondly i generalize the past application study for fem , establish the displacement conclusive model of dam to explain physics reason from the water pressure , temperature , time limited efficacy three aspects analyze
然后，在总结前人对有限元的应用研究的基础上，重点就大坝的变形和变形原因之间的物理解释，从水压、温度、时效三个方面分析，建立了基于有限元大坝形变分析的确定性模型。 |
