查询词典 model theory

The Chapter 3 introduced the classical theory of hedonic price model, and established an empirical hedonic price model of agricultural chemical.

第三章介绍了特征价格的经典理论，并在此基础上设立了农药特征价格的经验模型。

Based on the research of the hedonic price theory and hedonic price model, the function form of the hedonic price model is decided.

论文通过对特征价格理论和模型的研究，确定了港口岸线特征价格模型的函数形式。

To analyze the effects of heterogeneous material characteristics on rock failure,a micro-heterogeneous physical cellular automata model is introduced according to the cellular automata theory from a general power view.In this model,the neighbor is the Moore pattern and the Weibull distribution is adopted to simulate the rock heterogeneousness.

为了分析岩石材料的非均质性对其破坏演化的影响，根据元胞自动机理论，从能量的角度建立了一种能够从细观层次上对岩石破坏演化进行模拟的物理元胞自动机模型，模型引用的Weibull随机分布函数对材料的非均质性进行描述。

The project proposed and established the strict unique mathematical model of instantaneous frequency aiming at the currently existed problems in Hilbert Huang Transform form the viewpoint of physical connotative meaning; proposed and established the strict mathematical model of general intrinsic mode signal based on the concept of general continuous intrinsic mode signal and the compositive principle of practical general intrinsic mode signal; researched and proposed the fitting method of envelope lines in HHT from the viewpoint of theory, conquered the blindness and random in quondam EMD envelope line fitting and boundary treatment; developed a virtual time-frequency analyzer based on general intrinsic mode signal decomposition to open out the local time-frequency characteristics of nonlinear and nonstationary signal more deeply and accurately.

本项目针对希尔伯特-黄变换现阶段存在问题，从物理内涵的角度提出并建立了瞬时频率严格的唯一的数学模型；基于连续性的一般固有模态信号的概念和实际信号的一般固有模态信号的组成原理，提出并建立了一般固有模态信号严格的数学模型；从理论角度研究并提出HHT中的包络线构造方法，克服了原EMD的包络线构造和边界处理的盲目性和随意性；研发一台基于一般固有模态信号分解的虚拟式时频分析仪，使之可以更深入、准确地揭示非线性非平稳信号的时频局部特征。

Homogeneous reservoir model is one of the ideal and widely used model in theory and practice of well testing.

均质油藏模型是试井分析理论和实践中的最理想化、应用最广泛的一种模型。

This strategy follows the route from actual object modeling to model hypostatization. It adopts composite model of mathematical optimization and simulation. And the relevant theory and methods presented in this dissertation as well as the decision-making methods (e. g. fuzzy synthetic evolution) are put into use comprehensively.

它按照从实物模型化到模型实物化的求解路线，采用数学优化和仿真的复合模型，在人机合作的思想指导下，综合利用了本文提出的相关理论、方法以及模糊综合评判等方案评价手段。

The demonstration model basically tallies with the hypothetic theory model.

实证模型与理论构想模型基本拟合。

Achievements which are achieved by scientific research of predecessors are summarized. Some methods of how to generate self-similar process and a few means of estimating self-similar parameter are given. Self-similar traffics are generated by using of ON/OFF model with heavy-tailed distribution and results are given. The results of experiment accord with the theory. This identicalness indicates that the method of getting results by using of ON/OFF model is feasible.

本文总结了前人的研究成果，给出了几种常见产生自相似的方法和几种估计自相似参数的方法，并对ON/OFF模型叠加产生自相似业务进行了仿真实验，得到了实验结果，从实验结果可以看出，仿真结果和理论值比较接近，这说明利用ON/OFF模型叠加产生自相似业务是可行的。

By employing blur synthesizing score to assess the effect the influencing factors give to the traffic states, a congregate of scenes was established to describe the incredibility of traveling time in the transporting web and then the optimal solution of this model was calculated by taking advantage of a model of absolute and relative reliable path finding designed by Minimax theory, choosing a reliable path from jumping-off point to destination and making use of a arithmetic based upon dynamic programming. By so doing, the reliable path to the target could be grabbled when emergency erupted, this would lessen the complexity of how to resolve the proposition of transportation scheduling of relief commodity.

通过对以上问题的研究，可以帮助应急物资保障人员构建出一个可以在突发事件爆发后快速、高效地保障救援物资供应的应急物流系统，为物资运输搜索可靠路径，设计最小化时间与成本物资运输与车辆调度方案，为突(来源：AB71b0C论文网www.abclunwen.com)然爆发的灾难提供有效、实用的应对方案与决策模型。

The trajectory theory model of air target was made up according to its basic rule of flight control. A stochastic difference equation to model the air target movement in inertial frame coordinates was introduced.

根据空中目标飞行控制的基本规律，首先建立了空中目标航迹分布的理论模型，并在惯性坐标系中建立了基于随机微分方程的目标运动模型。

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％。