查询词典 simulation

There are some questions such as forest fire model selection, forest fire model updating, verifying simulation accuracy and so on in traditional forest fire spreading system. Study purpose is to build an innovative forest fire spreading simulation system based on DDDAS in this paper. The system can increase precision of forest fire spreading simulation by model base, model selection, model updating and so on. It can provide a strategic decision for forest fire save and new technologies demonstration for other related field of research. The research encompasses several major topics:(1) This paper brings up the term of dynamic data driven forest fire spreading simulation system and supplies new research approach and thought for forest fire spreading simulation study. The system framework was brought.

本研究针对传统林火模拟过程中存在的模型手动选择难度大、模型修正数据获取效率低、模拟精度验证困难等问题，以DDDAS为林火蔓延模拟研究的技术范式，提出林火蔓延模拟全新的技术框架体系，解决模拟系统建设过程中的模型库建设与管理、模型适宜性选择、模型自适应修正、模拟过程实时验证等关键技术，建立林火扩散模拟和实际林火发展之间相互协作、共生的林火扩散动态模拟系统；提高林火蔓延模拟精度，将林火蔓延模拟真正应用到林火扑救指挥过程当中，在实践上为林火扑救指挥提供决策支持，在理论上为相关领域的空间扩散模拟研究提供新的思路和技术范式。

The new circumstances that the discrete manufacturing enterprise is confronted with are analyzed; the function and configuration of production system is expounded; the research actuality and contents about production system capacity in the discrete manufacturing enterprise are summarized; the main research contents in this paper are developed.2. The calculating and analytical methods about production system capacity are studied systemically, a model to calculate rough-cut capacity instantly in "excel" table style is designed, the means to analyze production capacity in different production mode are brought forth, and the balance tactics of production capacity versus load are put forward.3. The application characteristics used in production system about the methods of Computer simulation and CRP in the MRPII/ERP are analyzed and compared; the advantages of Computer simulation method are pointed out; and the simulation researches aiming at production system capacity are implemented by Ithink simulation software.4. A simulation model is founded under the analysis of production system capacity in the production system background of a firm; the change instances of yield, output rate and WIP in the production system are simulated by the action of procurement cycle, machining time, setup time and so on. 5. The change instances of production capacity in the assembly stage are simulated , and rational employees are obtained.

本文主要进行了以下几个方面的研究：1、分析离散型制造企业面临的新情况，阐明生产系统的功能和结构，对离散型制造企业生产系统生产能力的研究内容和现状进行分析，提出本课题的主要研究内容。2、在系统地研究生产系统生产能力的计算和分析方法后，设计了用Excel表快速计算粗能力的方法；给出不同生产方式下的产能分析方法，并提出产能与负荷平衡的策略。3、比较和分析了MRPII/ERP的能力需求计划方法与计算机仿真方法在生产系统中的应用特点，指出计算机仿真方法的优势，并用Ithink仿真软件对企业生产系统生产能力进行了仿真研究。4、以A公司的生产系统为背景，在对生产系统生产能力分析的基础上建立了仿真模型，模拟了在采购周期、加工时间、调整时间以及返工率、废品率、机械开工率等因素作用下生产系统的产量、产出率和在制品数量的变化情况。5、研究在装配阶段生产能力的变化情况，通过仿真优化后确定合理作业人员数量。

The cars used machine dog digital simulation processing system following features : digital interface design and development of the system platform is based on environment through programming to achieve connectivity and the use of the interface between the basic attributes to achieve a blank map, parts map reached parts of the simulation processes shaped the cutlery trails simulation, achieving linear simulation for basic processing and operation will be completed on the digital processing used digital simulation commands conservation functions.

本车机采用的DOG数控仿真加工系统主要有以下特点：本系统数控界面的设计开发平台是基于Window 2000，在 C++ Builder 6.0环境下，通过编程来实现界面之间的连接以及利用C++ builder 6.0 中Canvas的基本属性来实现画毛坯图，零件图，达到对零件成型的仿真加工过程中的刀具路径进行模拟，实现了对基本线形的模拟加工，并且能够完成对所操作的数控模拟加工过程中所用数控指令的保存功能。

Simulation and prediction of reservoir lithology is one of the main subjects of reservoir sedimentology and oilfield production. By fan-delta lithology simulation study, a set of technology about reservoir structure simulation and prediction of fan-delta had been established. Through test calculation of different lithologies by using many simulation methodogies, the best simulation methodology for this depositional system had been determined and it is proved to be reliable by practice.

储层岩石相的模拟与预测是储层沉积学和油田实际生产的主要课题之一，通过对扇三角洲露头岩石相的模拟研究，总结出了该类扇三角洲沉积体储层建筑结构的模拟与预测方法，经对不同岩石相多种模拟方法的试运算，给出了对于该类沉积体系的最佳模拟方法，并通过实际检验证明是可信的。

A theoretical model is built to investigate the simulation of the infrared characteristic of the metal structure with the PCM false target.Structure parameters of the PCM false target that suit for the simulation are investigated numerically.According to the results,further request on the improvement of the thermal conductivity of PCM is presented.An experimental platform is built and the numerical model is validated experimentally.Three key thermal characteristic components of the false tank(barbette,wheel and front armor plate) are manufactured and tested,and good results are obtained.A method for the thermal conductivity enhancing of PCM by using aluminum fins is studied,the influence of the structure parameters of PCM plates to the simulation effects are investigated numerically,and the reasonable configuration parameters of the PCM plates used to simulate the steel plates of different thickness are obtained.In the study of the application of heat convection method in IR false target,a passive infrared simulation system is designed to simulate the infrared characteristic of metal constructions.The system is made up of pipe-plate,pump,receiver,and working fluid.

在相变材料应用于红外示假的研究中，通过数值模拟，研究确定了适用于制作假目标的相变材料各物性参数的范围，分析了相变材料制作假目标的可行性，并根据所得结果，选取石蜡为研究对象，建立了相变材料模拟金属构件红外特征的理论模型，研究了适用于模拟各金属构件红外特征的相变材料假目标的相关结构参数，得出了相变材料假目标模拟各金属构件红外特征的理论结果，并对相变材料的导热系数这一物性提出了进一步的改进要求；搭建了假目标实验平台，验证了所建理论模型的准确性；以坦克假目标为研究对象，制作了炮塔、负重轮和前上装甲板三个坦克假目标的关键红外热特征部件，并进行了野外实验，取得了较好的结果；以添加铝肋片作为改进相变材料导热能力的手段，理论研究了此类导热增强型相变材料的相关结构参数对模拟效果的影响，得出了模拟不同厚度钢板红外特征的导热增强型相变材料的结构参数及模拟效果。

In view of the fact that the complicated power electronic and electric machine system has multiple nonlineerand simulating tests are difficult and costly, the paper analyzes the configuration of the complicated power electronic and electric machine system, studies the model and simulation methods of each section and according to its section complexity, proposes the method of the modeling and simulation method of modeling separately and simulating connectedly to combine the circuit simulation method with the system simulation method.

针对复杂的电力电子电机系统通常具有多个非线性环节，且实验模拟测试困难费用昂贵等问题，采用仿真方法，通过分析复杂电力电子电机系统的结构，并根据其结构特点，研究了其各组成部分的建模与仿真方法，提出了根据各子系统复杂程度单独建模、再从系统角度把电路仿真和系统仿真结合起来联合仿真的仿真研究方法。

The standardized specification language and interactive graphical interface provides users some advanced functions, such as visual modeling of the Combined Continuous/Discrete Event System, management of simulation projects and models, design of experimental frame, experiments of simulation, data storage, real-time and off-line presentation of simulation results, diagrammatic analysis of simulation results.

它采用规范化的描述语言和图形化人机界面，支持用户完成连续—离散事件混合系统建模、仿真项目和模型管理、实验框架设计、仿真实验、数据存储、仿真结果的实时和事后表现、仿真结果的图表分析，具有比较完善的面向对象的多媒体建模和仿真功能，是国内第一个面向对象的多媒体仿真环境。

Sedimentation simulation can be divided into physical simulation and numerical simulation based on the methods of study utilized. Chapter 4 of this dissertation has carried out a physical simulation study about the processes of formation and laws of evolution of the fan delta in Baimiao gas field.

沉积模拟研究按其研究方法不同，可以分为物理模拟和数值模拟，本论文第四章系统开展了白庙气田扇三角洲形成过程及演化规律的物理模拟研究。

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。

This thesis is an introduction of the database system, which combines the fuze design and simulation, and it is an introduction of the technology for preconditioning the data in the process of the simulation. It also introduces the design of fuze system, the process of simulation and the application of the database for fuze design and simulation, with the example of the horologe of some fuze system.

本论文介绍了为引信设计、仿真集成系统所开发的数据库系统及仿真数据前处理技术，并以引信系统钟表机构为实例，介绍了引信系统设计、仿真过程及引信系统数据库的应用。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。