查询词典 modeling

Based on cognitive theory,this paper propounds a practical method of student modeling,which is to combine an information model and a learning model to achieve student modeling,and the learning model is depicted by a cognitive model,a covering model and a test model.

论文从认知理论出发，提出了一种实用的学生建模方法，即以信息模型和学习模型的组合形式进行学生建模，并采用认知模型、覆盖模型和测试模型对学习模型进行描述。

It syncretizes the excellency of early OO modeling method and language, and is a rich, precise and extensible modeling language for system development. Therefore, UML is used used in the whole course of software development.

因此，本文将UML应用于系统开发的整个进程中，通过其提供的多种视图从不同角度表现系统的静态和动态特征，完成系统的设计和实现，从而对整个系统有清晰的认识，并为最终的系统提供了相关的细节文档资料。

The technology employs hybrid realtime expert system to assemble modeling and many kinds of control methods, such as feedforward control, feedback control, adaptive control and intelligent control and so on, which realizes combination of modeling and control, closed loop control and trundled optimization.

鉴于加热炉的上述特点，本文提出了一种基于生产目标的加热炉优化设定控制方法，即按生产目标的总体要求与生产过程的特性相结合，研究加热炉建模与优化设定控制方式，并进行软件开发，最终形成基于生产目标的加热炉优化设定控制技术。

In order to assurance the maching accuracy and surface quality of steam turbine blades,based on typical CAD/CAM software Pro/Engineer 2.0,the flow diagram of parametric modeling and maching of turbine blades is drawn;The 3-D entity model of Steam Turbine Blade is upbuilt by parametric modeling method,and the fit-method with NURBS is extracted to smooth the curve surface,and the matrix expression of NURBS is deduced to make the surface more accurate;Then based on it's CAD model,the maching technology process...

为保证汽轮机叶片的加工精度和表面质量，以典型的CAD/CAM软件Pro /Engineer Widefire2.0中文版为基础，绘制了汽轮机叶片参数化设计加工的流程图；用参数化建模方法建立了叶片的三维实体模型，提出用NURBS曲线拟合方法进行光顺处理，并推导出NURBS的矩阵表达式便于截面型线的拟合，进而使叶片的造型更加精确；在CAD模型的基础上，分析了叶片的加工工艺流程，并用软件的CAM功能对叶片进行数控加工仿真，生成了NC代码。

First, we consider nonholonomic chained systems with modeling error, in this section,based on back-stepping , using the so-called adding a integrator , state-scaling technique , we design discontinuous feedback law,such that the trival solution of the closed-loop systems global strong stable; Second,we consider high-order nonholonomic chained systems with modeling errors and external disturbances, in this section,using input/state-scaling and integrator backstepping methods , we design discontinuous feedback law and give out the switching strategy, such that the closed-loop systems global /C-exponential stable; Finally, we consider a class of more general power chained form systems with particular drift-terms, in this section , using Lyapunov method, we design time-varying feedback law , such that the closed -loop systems p—exponential stable.

第一部分考虑的模型为带有模型误差的高阶非完整链系统，我们运用加幂积分器、State-scaling技巧以及基于Back-stepping方法构造出不连续反馈律，从而使得所讨论系统的闭环系统的平凡解全局强稳定；第二部分考虑的模型为带有模型误差的不确定高阶非完整链系统，这一部分我们运用input／state scaling和integrator backstepping方法构造出不连续反馈律，并给出切换策略，使得所对应的闭环系统全局κ-指数稳定；第三部分考虑的系统是形式更为一般的且带有特殊形式漂移项的幂链系统，利用Lyapunov函数方法，设计出时变反馈律，从而使得相应的闭环系统ρ-指数稳定。

This thesis proposed Agent-based Petri net Modeling concept on the base of object-oriented Petri net modeling, which greatly decrease the complexity of Petri net models.

本文在面向对象的Petri网建模思想上提出了基于Agent的Petri网建模思想，大大降低了模型的复杂性。

To combine immediate modeling with sketch modeling, increased the level of parameterization about structural design of belt pulley.

O引言皮带传动是常用的机械传动类型，机械设计过程中经常涉及到皮带轮。

To combine immediate modeling with sketch modeling, increased the level of parameterization about structural design of belt pulley.

通过直接造型与草图造型相结合，提高了皮带轮结构设计的参数化程度；通过设置开关参数增加了皮带轮三维模型模板的适用类型，为轮盘类零件的参数化结构设计提供了有益的探索途径。

The deformation process of the human body and the garment pressure distribution is simulated when the tight-fitting clothing was being worn, through the elastic modeling of human body and the elastic modeling of clothing which we constructed in the thesis.

这不仅在为几何形体造型、变形及动画制作提供了新的方法，而且对功能性服装CAD、计算机动画、工业产品造型设计等领域的发展具有一定的参考价值。

In this paper, the computer-integrated system, aimed at textiles design and 3D dressing rendering, is constructed with making use of theories of textiles design and 3D dressing modeling, combining the means of mathematics matrix computing, computer graphics and digital image technology. Some investigations on technology issues, such as automatic generation of weaves, simulation of fabric, modeling of 3D human body and garment, and texture mapping of fabric to garment, are also made.

本论文针对纺织品服装设计，运用纺织品设计理论、三维人体服装建模理论，结合数学矩阵运算、计算机图形学、数字图象处理等技术手段，构建了织物设计与三维实体着装模拟这一集成系统的框架结构，对织物组织的自动生成、织物外观仿真、三维人体服装的构造和曲面拟合、织物对三维服装的纹理映射等技术问题和算法，进行了较深入的研究和探讨。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。