查询词典 space model

Design parameter based on finite element model updating is part of an inverse problem of structure dynamics. Features of the structure are used as a function of design parameters. Parameters are updated based on the first derivative. This paper presents a new method which treats the model updating as a positive problem.

设计参数型有限元模型修正属於结构动力学反问题，其理论基础是将结构的特徵量视为设计参数的函数，然后依据特徵量对设计参数的一阶导数信息进行迭代求解。

Liquid propellant rocket engines ; combustion chambers ; partition model ; finite elements ; state variable model

液体火箭发动机；燃烧室；分区模型；有限元；状态变量模型

Keywords:special-shaped arch bridge; model test; loading program; test point arrangement; finite element model

关键词］异型拱桥；模型试验；加载方案；测点布置；有限元模型

The results of calculation indicate, utilizing the spline finte point method to carry on the analysis of the intellectual structure, the model is simple, the physics relation is very clear. Comparing with the finite element model, the spline finite point method has greater superiority.

计算结果表明，利用样条有限点法进行智能结构的分析，计算模型简单，物理关系明确，与有限元法相关的计算模型相比，具有较大的优越性，实用价值高。

We predicted the range of S. invicta within China by applying two models: climate model and dynamic model of fire ant colony growth. We also explored the distribution factors of soil temperature and precipitation in China.

利用气候模型和种群动态模型对红火蚁在中国可能的分布范围进行分析，并从地温和降雨两个方面探讨了其气候制约因素的地理分布特征。

During the study procedure of intelligent intrusion-detection model and network security forecast technology, as a result of analyzing the hacker intrusion technology and user network behavior feature, this paper gives out a categorizing principle and proposes a model of user network behaviors habit, and then implemented them in the security forecast subsystem of FireGuard firewall to detect the network intrusion effectively.

在对基于知识推理的智能网络入侵检测模型和网络安全预警方法的研究过程中，通过对网络黑客攻击方式和手段以及Internet上用户网络行为特征的分析，给出了用户违反网络安全规则行为的分类原则，在此基础上，提出了基于数理统计思想的用户网络行为习惯模型，并在FireGuard代理防火墙系统的智能安全预警子系统中进行了实现。

Man-in-the-loop simulation is a promising branch of simulation field. This paper presented the theory on man-machine engineering, and established the model of the firer of antitank missile. Then a test software was introduced to identify the characteristic parameters of human. Finally, we performed digital simulation on the missile system including the firer model and used the TIC unequal coefficient method and gray relating method to analysis the simulation results.

摘 要：该文介绍了人机工程中关于对人体建模的理论基础，并在此基础上建立了反坦克导弹射手模型；为确定人的典型特性参数，编制了一套小型测试软件，利用这套软件可以初步辨识出被测人员的特性参数；最后对含有射手的导弹武器系统进行了数字仿真，并用TIC不等式法及灰色关联分析法对仿真结果进行了精度分析。

Using the result of heat balance equation as the first kind of boundary condition of the simulation of the model, the software simulates the temperature and velocity field of the abroad model data and site measurement data of Shanghai International Gymnastics Stadium.

对上海国际体操中心比赛主场外环境、室内温度分布、室内负荷热平衡等进行了八大项目的现场实测。

Second order incident boundary condition on fixed incident boundary is derived for numerical simulations, based on the cnoidal or sinusoidal motions of wave maker paddle, which shows that the prediction with second order incident boundary condition is more accurate than the prediction with first order incident boundary condition. 2 The analytical solution for higher-order Boussinesq equations is derived and its applicable range is discussed. 3 A 2-D fully non-linear numerical model using boundary element method is developed to obtain wave forces acting on rectangular obstacle. 4 The three-dimensional fully non-linear waves are studied in a numerical wave tank using finite element method.The studies on the coupled numerical model combined Boussinesq equations with Laplace equation are following.

非耦合非线性波浪计算模型：1 根据造波板做椭圆余弦运动或正弦运动速度，推导出数值模拟波浪水槽时固定入射边界上的二阶波浪入射边界条件，数值计算结果和实验结果的对比表明采用二阶入射边界条件对波面升高的预报比采用一阶入射边界条件对波面升高的预报更为精确；2 推导了波浪水槽造波板做正弦运动所产生波浪的高阶Boussinesq方程摄动展开解析解，讨论了该解析解的适用范围；3 对整个波浪水槽应用边界元方法数值模拟了波浪对物体的非线性作用；4 用有限元法求解三维Laplace方程模拟了三维完全非线性波浪水槽。

The first derivative spectra have been applied to develop this model. This model has been optimized by selecting the best wavelength range and the most suitable factors.

为了优化模型，我们对白酒的近红外光谱进行一阶导数处理，选择最佳的波长范围和最适的因子数。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。