数学模型

As a consequence, based on the water system denseness method and the tectonic d...

论文在分析地应力及地应力场特征和规律基础上，论述了地应力场主要组成部分；较系统地阐述了粗集理论的主要内容，应用粗集理论计算各因素对地应力场的影响，并提出基于粗集理论计算权重的方法；解释了图像滤波使图像边界模糊的原因，提出基于粗集理论的图像滤波方法；研究TM图像各波段的信息特征、最佳波段组合及各波段赋色；剖析构造形迹在反推构造应力场中作用，建立断裂构造形成时的构造力学模型；利用遥感资料解译了与新构造应力场密切相关的水系，在GIS支持下，应用水系密集度方法和构造力学模型计算了新构造应力场的方向与大小；分析了地形起伏对重力场的影响，并建立了相应的数学模型；研究了地应力在矿山巷道及开采设计中的应用。

Exact formulae for bit error probabilities of the considered system are derived, and a set of numerical results both for the exact formulae and Gaussian approximation are presented.

分析并得出了系统位错概率的数学模型，并给出了该模型和高斯近似模型的一系列数值仿真结果。

It researches on the approach to achieve continuous connections of container multimodal transport logistics system. Based on the idea of continuous connections the paper discusses the container transport choosing route problem. It combines the appropriate adimensionalize method in the appraisement method and mathematic model and resolves the problem that the unit of time and cost disunite and sets up the time-cost transportation route optimizing model which is an innovation on the basis of previous studies and gives an example to validate the model using the LINDO software.

在"无缝衔接"的思想下研究集装箱运输路径选择问题，在前人的研究上进行了创新，将评价方法中的合适的无量纲化方法与数学模型结合，解决了时间和成本单位不统一的问题，建立了时间—成本运输径路优化模型，并举例验证应用LINDO软件进行求解，说明了此模型的正确性。

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。

This mathematical model is composed of the electromagnetics model and the mechanics model.

该数学模型由电磁学模型和力学模型组成。

The emulations and experimental results indicate that the theoretical model combined the neural network and genetic algorithm not only can conquer the disadvantage, which network is prone to enmesh the partial minimal error, but also utilize the powerful artificial intelligence of neural network.; This model provides a new method and idea for the monitor systems management, meanwhile it also offer a new method for solving the problems of the undetermined information processing; This model has powerful studying function, high accuracy, and strong practicability, so it has promoted value.

仿真及实验结果表明：由于此数学模型是将神经网络和遗传算法相结合应用在井下的监控系统中，因此即克服了神经网络容易陷入局部最小误差的缺点，又利用了神经网络本身强大的人工智能；该模型不仅为煤矿监控系统管理提供了一种新方法和新思路，同时也为解决不确定性信息处理问题提供了一种新的尝试和手段；该模型学习功能强大，精度较高，实用性强，具有很好的推广价值。

The change of observation error was analyzed in the case of stator flux observer ui model at high speed and in model at low speed when the parameters of motor changed based on the mathematical model in the stationary coordinates.

利用静止坐标系下的异步电机数学模型，分析当电机参数改变时，高速运行状态下定子磁链观测器 u i 模型和低速运行状态下 i n 模型的观测误差变化情况，然后给出定子磁链全阶观测器增益矩阵的确定方法。

And established the mechanics model,optimization parameter model,optimization mathematics model for the elastic element of the extensometer,programs analysis file and optim...

以应变计式引伸计弹性元件的结构优化为例，建立了引伸计弹性元件的力学模型、优化参数模型、优化数学模型，用ANSYS的参数化设计语言编制了分析文件和优化控制文件，经计算获得最优结果。

We selected the geometric and geodesic active contour model of Caselles as our researching objects in next steps .

在诸多改进的数学模型中，选取了Caselles等人的几何活动轮廓模型和测地线活动轮廓模型作为我们进一步研究的对象。

For the need of target location for robot,according to the structure of the robot and the characteristic of the omni-vision system,a set of models including the reflecting model of hyperboloid mirror and imaging model were researched and built.

俞飞，硕士生，主研领域：全向视觉针对机器人对目标定位的需要，根据机器人结构及全向视觉系统的特点，研究并建立了包括双曲面镜的反射模型、成像模型在内的一套数学模型。

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％。