模型

Based on Oriented Boundary Box Tree of point cloud model, a simplified model with topological information is constructed first. Then based on this model representation, a hierarchical segmentation algorithm is implemented.

基于点模型的有向包围盒树，首先建立点模型带拓扑信息的简化模型，基于这种几何表示，将网格模型的层次分片算法推广到点模型中。

The logarithm model in fighter plane air combat effectiveness assessment was analyzed firstly, and its deficiencies were put forward. Then, combined with air combat theory and practice, a new method for air combat effectiveness assessment, synthesized index model, was presented aiming at the problems, and the sub effectiveness evaluation models were perfected synchronously.

首先详细分析了战斗机空战效能评估中常用的对数法模型，指出了模型中存在的问题；然后结合空战理论和实际情况，针对原模型存在的问题提出了一种新的效能评估解析计算方法——综合指数模型；同时对综合指数中各分项能力的评估模型进行了修改完善。

This paper is composed of four parts: the first part is the exordium and explain the developing trend of researches of exchange rate volatility, the second part introduce the data that used in this article and describe the character of the object, the third part simulate the daily exchange rate of the ShangHai Stock Composite Price Index with ARCH models, the fourth part forecast the volatility of the daily exchange rate.

全文共分为四个部分：第一部分阐述了关于收益率波动研究的发展趋势，并总结了国内外基于ARCH 模型的一些实证研究成果；第二部分介绍了本文研究所使用的数据及处理方法，并对该数据的统计特征进行描述；第三部分引入ARCH 族模型对上证指数的日收益率序列进行拟合研究，通过拟合不同的模型揭示了日收益率波动过程中条件异方差的波动特征，定量的刻画了收益率波动的不确定性；第四部分将拟合的模型应用于对收益率波动的预测，分别从定性预测和定量预测两个角度介绍ARCH 族模型的应用实例。

It is considered that the experimental results coincide with the simulating results.The simplified graded inertia anode model is provided from the improvement of the first 2-D graded model. This model is made of cup-shape section, core bar and plugging compound. ANSYS FEM software is used to compute the distribution of the thermal stress in the model.

针对第一种二维梯度阳极模型存在的缺陷进行改进，设计了一种简化的梯度阳极模型，整个模型由外部杯状结构(NiFe_2O_4+Ni)、芯杆(1Cr12WMoV合金钢)、中间填充层(NiFe_2O_4+Cu)三部分组成，由于这三部分的热膨胀系数、弹性模量等物性参数是呈梯度缓慢过渡的，因此可以把这个模型看成是广义的梯度模型。

The article incorporates Huygens principle with existing fire behavior models of surface fire spread,crown fire spread,fire acceleration,builds forest fire simulation models which fit to Anning s terrain,and develops related dynamic modules for Yunnan Province.

利用惠更斯原理进行林火蔓延模拟，结合国际上成熟的林火行为模型(Rothermel的地表火模型，Van Wagner的树冠火蔓延模型，McAlpine的林火加速模型)，建立适合云南省特殊地形的林火蔓延动态模型，并开发相应的动态模拟模块，在云南特殊地形地貌上的林火蔓延模拟做出一定探索。

This paper describes and compares 4 streamtube models (single-disk single-streamtube, double-disk single-streamtube, single-disk multi-streamtube and double-disk multi-streamtube models) based on the momentum theory for the hydrodynamic performance prediction of the vertical-axis variable-pitch turbine that may be employed to tap tidal stream energy resources, especially for the prediction of the overall turbine power coefficient.

以潮流发电水轮机的设计为研究背景，分析和总结了基于动量定理方法的四种流管模型(单盘面-单流管模型、双盘面-单流管模型、单盘面-多流管模型和双盘面-多流管模型)在竖轴变攻角水轮机的水动力性能计算中的应用，特别是能量利用率预报方面的应用。

We consider a double-line risk model,where the claimed number processes and one of the double policies about number processes are different Cox process es.

研究了一类双险种风险模型，模型中的索赔到达计数过程和其中一个险种的保单到达计数过程均为 Cox过程，得到了最终破产概率满足的推广的Lundberg不等式；研究了混合Poisson风险模型的破产概率，得出在一定条件下平稳Cox模型比Poisson模型风险更大的结论。

The bench-scale equipment of numerical control simulates, the high-performance number electricity mold electricity bench-scale equipment, PLC programs laboratory bench, air operated PLC controls laboratory bench, the microcomputer control central air conditioning laboratory bench, the sensor engineering laboratory equipment; Automobile teaching equipment: PASSAT entire vehicle model, program control showing board, military cross-country vehicle teaching aid series, automobile driving analogous system; multimedia electricity-teaching room, multimedia language sound chamber, entire digital language sound chamber, language study system, teaching VCD series; machinery exhibition cabinet series, hydraulic transmission demonstration, electrical machinery electricity laboratory, project charting laboratory; the electrical machinery controls the laboratory bench, the electron bench-scale equipment, the electrician bench-scale equipment, counts the electricity, the mold electricity laboratory, the micro electricity connection laboratory, the electric power drives laboratory, the microcomputer test installation; central air-conditioning test installation, refrigeration system hot test installation, electrical appliances synthesis test installation; teaching wall map series, teaching blackboard series; The finance and accounting simulates laboratory, simulates the bank laboratory; medicine teaching model; transparent elevator laboratory bench, transparent electrical machinery model, transparent lathe engine bed; universities specialized laboratory bench, physics bench-scale equipment, chemical laboratory equipment, biology bench-scale equipment, middle school necessary instrument.....

教学设备、教学仪器、教学模型、教育设备、数控模拟实验室设备、高性能数电模电实验室设备、 PLC编程实验台、气动PLC控制实验台、微机控制中央空调实验台、传感器技术实验室设备、汽车教学设备、帕萨特整车模型、程控示教板、军用越野汽车教具系列、汽车驾驶模拟系统；多媒体电教室、多媒体语音室、全数字语音室、语言学习系统、教学VCD系列、机械陈列柜系列、液压传动演示台、电机电气实验室、工程制图实验室、电机控制实验台、电子实验室设备、电工实验室设备、数电、模电实验室、微电接口实验室，电力拖动实验室、微机实验设备、中央空调实验设备、制冷制热实验设备、家电综合实验设备、教学挂图系列、教学黑板系列、财会模拟实验室、模拟银行实验室、医学教学模型、透明电梯实验台、透明电机模型、透明车床机床、高校专业实验台、电工实训室、电气实训室、单片机实训室、自控原理实训室、电力电子实训室、自动检测与转换实训室、过程控制实训室、电机原理实训室、电机维修维护实训室、可编程序控制器实训室、机电设备安装实训室、机电设备拆装实训室、电气自动化技术教研室、机电一体化实训室、数控教学实训室、数控加工实训室、楼宇自动化实验室、自动化设备陈列室、电子测量实验室、液压与气动实验室、工业仿真模型实验室、机电设备故障诊断与维修实训室、物理实验室设备、化学实验室设备、生物实验室设备、中学配套仪器。。。。。

Then the dynamic mathematical model for the whole unit of air source heat pump is founded with the parts of compressor model, airside heat exchanger model under frosting, heat exchanger model of water side and electronic expansion valve.

将压缩机模型、空气侧换热器结霜模型与水侧换热器模型、电子膨胀阀模型有机地结合在一起，构成了整个空气源热泵冷热水机组的动态模型。

Firstly, in order to realize customers satisfaction and loyalty, based on former study, the DCEP model of distribution containing the four parts, namely, enterprises, customers, employees and copartners, is designed. In addition, partnering is introduced to carry out this model and established in each model, and then their collaboration is enhanced. Finally, the evaluation index system of this model is designed, and the DCEP model is evaluated by the method of AHP.

在众多学者研究的基础上，为提高顾客满意度和忠诚度，本文构建了由配送企业、顾客、员工和合作伙伴四部分构成的基于CRM的物流配送DCEP模型；指出模型各方应建立伙伴关系，加强模型各方的协作，为顾客提供优质的配送服务；最后，设计了模型效果测评指标体系，并利用层次分析法对DCEP模型进行了测评。

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％。