查询词典 model theory

From the lumped equivalent circuit model, the phase shift/attenuation and impedance characteristics of the novel structure are first analysed based on the Bloch theory, which shows the novel structure has properties analogous to those of a bandpass filter: the attenuation constant keeps zero with a continuous and smooth characteristic impedance distribution within the passband and the bandwidth may be arbitrarily specified; characteristic impedance is purely imaginary with the inhibition of the electromagetic wave propagation outside the passband.

首先从一般的等效电路模型出发，根据Bloch周期性理论对该结构的相移、衰减和阻抗特性进行了分析，结果表明该新结构具有类似带通滤波器的特性：通带内衰减常数为零，特性阻抗为实数并随频率连续平滑分布，具有可任意指定的阻抗匹配带宽；带外特性阻抗为纯虚数，电磁波传播受到抑制。

Based on fluid network theory ,the mathematical model of fluid pulsation attenuator was established.

采用流体网络理论方法对流体网络的特点和基本参数法进行分析，研究并建立一种流体脉动衰减器的数学模型，并通过脉动衰减器的阻抗及系统插入损失，对其性能进行研究。

To design a basic evaluation model of attribute data in GIS, using various theory of data quality, this paper makes a deep analysis of quality control and evaluation of attribute data and brings forward a effective measure against error in attribute data. A good method is presented to improve precision of attribute data in this paper.

为了给出一个GIS属性数据质量评价的基本模型，结合已有的数据质量理论，本文对属性数据的质量控制与评价进行了深入分析与研究，给出了GIS属性数据质量控制的有效措施，并提出了提高属性数据存储、操作精度的方法。

Fourth, this study constructs economic growth convergence theoretical model for provincial economy in mainland China under considering the technical spillover, labor and capital mobility based on neo-classical economic growth theory and augmentative Cobb-Douglas production function. And the empirical research based on the data from mainland China presents more appealing results.

四、本研究基于新古典经济增长理论和扩展的柯布一道格拉斯生产函数，在考虑了技术溢出、劳动力和资本区域流动的基础上，构建了中国省域经济增长理论模型；并利用中国经济数据进行实证研究，得出较其它学者的研究结论更多的启示。

The simulation of the new autocorrelation model, LGS, is presented based on the random field theory.

从随机场的基本理论出发，介绍了新相关模型LGS的数值模拟方法。

The study of coalgebraic methods, as one of the active areas for theoretical computer science in recent years, is widely used in concurrence computing model, automat theory, and the foundations of object-oriented technology.

共代数方法是近几年来理论计算机科学的研究热点之一，在并行计算模型、自动机及面向对象技术的理论基础方面有着广泛的应用。

Using negative feedback theory of automatic control in the industry,network learning evaluation model is established in the paper.

利用工业自动化控制中的负反馈理论，提出网络学习评价模型。

The course of Automatic Control Principlescome down to foundation theory of the control system of the model establishment,the system analysis and the system design.

《自动控制原理》课程涉及到控制系统的模型建立、系统分析、系统设计等的基础理论。

In recent 20 years, System identification as one of the important ways to establish mathematical model of the controlled object has been developed rapidly and become one of the automatic control theory, a very active and important branch.

系统辨识作为建立被控对象数学模型的重要途径之一，近20年来获得了迅速的发展，已成为自动控制理论的一个十分活跃而又重要的分支。

Based on the wavelet, gray box and autoregression theory, create a time series model to simulate and predict runoff.

依据灰色系统、小波变换和自回归理论，建立了黑河干流出山径流的时间序列分解模型。

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％。