模型理论

This article sets up a state equation of reactor power control, making- use of the differential geometry theory of modern cybernetics, and applying this theory to deal with the non-linear neuclear dynamics model .

本文建立了反应堆功率调节系统的状态方程，运用现代控制理论中微分几何理论对非线性核动力学模型进行线性化处理，根据观察器理论，构造了状态变量C的观察器，研究了在反应堆功率和反应性两种扰动下反应堆全反馈功率调节系统的品质。

The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.

根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对于陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。

In contrast, the word metaphor throws more lights on the understanding of learning object, such as, among other things, the hierarchy of learning object, which the well-known metaphors have failed to unveil.

在第二章中，我们深入地讨论了与本课题相关的三个理论模型，即Reigeluth的精加工理论、Merrill的部件呈现理论和D。

Color constancy is one of the most attractive topics in color research. This paper briefly reviewed coefficient theory, computational theory and Octant model.

本文对早期颜色恒常理论、系数理论、计算理论和 Octant模型作了简要回顾，并结合已有的研究成果进行评述。

And resolves many difficult issues for complex multibody systems dynamic analysis, design and simulation in engineering areas. Therefore, it is worth to deeply investigate and perfect the spatial operator algebra.

本篇论文也是以空间算子代数理论为研究对象，对其理论作深入研究，并在Lie群、Lie代数、Riemannian流形理论体系中建立空间伴随算子形式的高效率建模和高效率递推运算动力学模型。

The mathematical model is built based on the theory of valence bond theory and percolation network theory.

在大量实验研究的基础上从理论上解释了岩石热开裂的影响因素和作用机理，并引入了逾渗理论和价键理论建立了岩石热开裂的数学模型。

At the chapters of theory analysis,constitutive equation of dusty is deduced from the results of the experiment and related theories about oblique shock wave.after that relationship of parameters reflecting flow-field characteristic are deduced from theories of shock wave polar .The paper set up conservation equations depicting gas and solid flow-field by double fluid model,thus equations and constitutive equation of granular phase form closed equations.then the paper uses AUSNT vector splitting method to numerically calculate the equations.

理论部分主要包括：利用实验测试结果以及斜激波理论测试出该堆积粉尘的本构方程，然后利用和激波极曲线理论得到反映流场特征参数的变化曲线；本文还利用双流体模型，建立了描述气—固两相流动的守恒型方程组，与本构方程一起构成封闭方程组。

Fields covered include: logic of provability, applications of computability theory to biology, psychology, physics, chemistry, economics, and other basic sciences; computability theory and computable models; logic and space-time geometry; hybrid systems; logic and region-based theory of space.

包括的领域包括： provability的逻辑，对生物学，心理学，物理学，化学，经济学和其他基础科学的computability 理论的应用； computability 理论和可计算的模型；逻辑学和空间时间几何学；混合法；逻辑和基于地区的空间的理论。

Some statistical properties of product assembly are obtained on the basis of industrial investigation of assembly procedure and analysis of assembly operations of typical products; concept of fuzzy quotient set is introduced to the study of assembly sequence planning and a theoretical frame and algorithm for assembly sequence planning based on product fuzzy quotient set is presented; theory and method of fuzzy automata and fuzzy decision are used in the investigation of sensor based assembly sequence planning and a theoretical frame and algorithm for assembly sequence planning based on information sensing of assembly process are presented; an assembly model for product is put forward; study of product disassemblability is carried on.

论文通过对产品装配工艺的工厂调研及典型产品的装配作业分析得到了有关产品装配的一些统计特征；将模糊商集合的概念引入装配顺序规划的研究中，提出了基于产品模糊商集合的装配顺序规划的理论框架和算法；将模糊自动机及模糊决策的理论和方法应用到基于感知的装配顺序规划的研究中，提出了基于装配过程信息感知的装配顺序规划的理论框架和算法；提出了一种产品装配模型；进行了产品可拆卸性的研究。

Keywords Granular Computing;Quotient Space Theory;Rough Set Theory;Fuzzy Set Theory;Granularity Space;Knowledge Space;HMM

粒度计算；商空间理论；粗糙集理论；模糊集理论；粒度空间；知识空间；隐马尔科夫模型

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。