查询词典 factor model

A diatomic linear oscillate model in one dimension was used to analyze the influence factors of the dielectric constant and quality factor and the relationship between them.

采用一维双原子线性振动模型，分析了微波介质陶瓷材料的εr、Q影响因素和它们之间的相互制约关系；采用Clausius-Mosotti方程，分析了谐振频率温度系数的影响因素以及它和εr之间的相互制约关系。

It includes:the items and methods of the investigation into motor vehicle exhaust emission; how to calculate the emission factor;how to choose and set the atmospheric pollutants diffuseness model in urban street;how to calculate the quantum of vehicle exhaust emission and the concentration of traffic pollutants diffuseness in street in traffic network,and how to evaluate traffic pollution of traffic network load.

以可持续发展的城市交通规划理念为基拙，探讨了城市交通规划过程中机动车对空气污染的影响进行分析的关键技术：机动车尾气排放的调查内容与调查方法、单车排放因子的确定、城市街道污染物扩散模型的选择和建立、交通网络环境条件下机动车尾气排放量和街道污染物扩散浓度的计算及交通网络负荷条件下交通污染评价。

In certain assumptions, the discount factor based on random method of the basic theory, derived traditional capm model.

在一定的假设条件下，根据随机折现因子方法的基本理论，推导出传统的capm模型。

We will begin by reviewing some theoretical asset pricing using using the stochastic discount factor framework and emphasize on the contingent claim and the consumption-based model.

我们将首先回顾建立在随机贴现因子基础上的资产定价理论，并将着重研究基于消费的资产定价模型。

To make occurrence degree prediction, single factor regression algorithms, stepwise regression algorithms, discriminatory analysis, Markovian model, fuzzy mathematics theory and Back propagation neural network algorithms are studied and models are builded.

将筛选出的主要气象因子作为预测因子，分别用单因子回归预测法、逐步回归预测法、判别分析预测法、马尔柯夫链预测法、模糊数学预测法与神经网络预测法建立了关中地区小麦吸浆虫的发生程度的预测模型。

The model was evaluated with etiologic factor, sumptom, sign, experimental data, and the disproof of treating with herbal decoction.

从病因、症状、体征、实验指标以及中药治疗反证等方面对模型加以评价。

The author systematically studies the distributive Law of front abutment pressure and its main influential factor in Top-coal caving face by analysing theory,experimenting similar model,and observing spot.

运用理论分析、相似模型实验和现场实测，系统研究了放顶煤采场前支承压力的分布规律及其主要影响因素，得出支承压力表达式( 3)、( 7)是可信的，塑性区宽有利于顶煤压裂，峰值低影响硬煤冒放，放顶煤一次采厚是有限

In the history of communication, even" communication model has its own factor of "affirmation" and ""negation". Mass communication is a ""negation" to personal communication while network communication turns to be a negation to mass communication, which means a "double negation.

在人类的传播史上，每一种传播方式都包含着"肯定"和"否定"的因素，大众传播是对人际传播的一种"否定"，而网络传播则是对大众传播的另一次"否定"，也就是"否定之否定"。

Based on the equivalent cylindrical pattern of soil wetting front, the model of dripper discharge was developed mathematically, and the change of each factor with the dripper discharge was analyzed to determine the main influential factors of dripper discharge design for drip irrigation system.

该文以等效圆柱湿润体模型为基础，建立了点源滴灌滴头流量的数学模型，针对模型中各因子随滴头流量的变化过程进行实验分析，确定影响点源滴灌滴头流量设计的主要因素。

It solves the problem that the unitary contour presentation can not correctly extract face contour in a face image which suffers from scale, rotation etc. The definition of the internal and external energy function is provided. At the same time, the global matching algorithm and local matching algorithm is given. The experiment shows that this presentation and the accompanying matching algorithm can be used to extract the face contour very well. So the image segmentation can be implemented by using it.②By analyzing the recognition principle of PCA method, we can conclude that the face images coming from different surrounding consist of different face image space. This is the essential reason that makes the generality of PCA method worse. Also, we give a measurement means to measure the distance from different face image space, so we can analyze face image space more conveniently.③We also construct various scale models and rotation pose models to detect the scale and rotating angle of face image to be recognized. The experiment results show that the detecting precision is very high. So it is good for face image feature extraction and face image representation.④Similarly, we construct local feature models of face image and utilize them to detect the local feature of face image. At the same time, we put forward a novel face image local feature detection algorithm, locating step by step. The experiment results show that this method can accurately detect the location of local face feature in a image.⑤A novel face image presentation model, dual attribute graph , is put forward. Firstly, it utilizes attribute graph to present the face image, then exact the local principal component coefficient and Gabor transform coefficient of thc pixels which corresponds to the nodes of the graph as the attribute of the nodes. This representation fully makes use of the statistical characteristic of the local face feature and utilizes Gabor transform to present the topographical structure of face image. So DAG has more general property.⑥Based on the DAG presentation, we give a DAG matching function and matching algorithm. During the design of the function and algorithm, the noise factor, e. g., lighting, scale and rotation pose are considered and tried to be eliminated. So the algorithm can give more general property.⑦A general face image recognition system is implemented. The experiment show the system can get better recognition performance under the noise surrounding of lighting, scale and rotation pose.

本文在上述研究的基础上，取得了如下主要研究成果：①构造了一个通用的人脸轮廓模型表示，解决了由于人脸图象尺度、旋转等因素而使得仅用单一轮廓表示无法正确提取人脸轮廓的问题，并给出了模型内、外能函数的定义，同时给出了模型的全局与局部匹配算法，实验表明，使用这种表示形式以及匹配算法，能够较好地提取人脸图象的轮廓，可实际用于人脸图象的分割；②深入分析了PCA方法的识别机制，得出不同成象条件下的人脸图象构成不同的人脸图象空间的结论，同时指出这也是造成PCA方法通用性较差的本质原因，并给出了不同人脸空间距离的一种度量方法，使用该度量方法能够直观地对人脸图象空间进行分析；③构造了各种尺度模板、旋转姿势模板以用于探测待识人脸图象的尺度、旋转角度，实验结果表明，探测精确度很高，从而有利于人脸图象特征提取，以及图象的有效表示；④构造了人脸图象的各局部特征模板，用于人脸图象局部特征的探测；同时提出了一种新的人脸图象局部特征探测法---逐步求精定位法，实验结果表明，使用这种方法能够精确地得到人脸图象各局部特征的位置；⑤提出了一种新的人脸图象表示法---双属性图表示法；利用属性图来表示人脸图象，并提取图节点对应图象位置的局部主成分特征系数以及Gabor变换系数作为图节点的属性，这种表示方法充分利用了人脸图象的局部特征的统计特性，并且使用Gabor变换来反映人脸图象的拓扑结构，从而使得双属性图表示法具有较强的通用性；⑥在双属性图表示的基础上，给出双属性图匹配函数及匹配算法，在函数及算法设计过程中，考虑并解决了光照、尺度、旋转姿势变化等因素对人脸图象识别的影响，使得匹配算法具有较强的通用性；⑦设计并实现了一个通用的人脸图象识别系统，实验结果表明，该系统在图象光照、尺度、旋转姿势情况下，得到了较好的识别效果。

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％。