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Combined with such characteristic parameters as chubbiness, fullness and intensity factor, etc., this process can automatically and adaptively choose the proper scanning pattern, moving speed of the platform and diving depth in according to the shape features of each layer and structural features. The process greatly enhances the prototype's building efficiency and consequently reduces the operation cost of RP machine.

为了能够在保证精度的前提下尽可能提高原型的制作效率,本文提出了自适应智能制作工艺流程的概念,结合饱满度、充盈度、强度因子等特征参数,该工艺能够根据层截面的形状特征及已原型固化部分的结构和强度,自适应地选择适当的扫描方式和托板的升降速度、下潜深度,极大地提高了原型的制作效率,从而有效地降低了成型机的运行成本。

This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.

将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题;为处理一些特殊的拓扑关系情况,提高扫描线算法的效率,探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法;同时还设计了一种新的节点微小圆求交的算法,可应用于图斑与线状地物细分拓扑关系及地类面积的计算;(5)本文设计了实验系统,包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能,以及时空拓扑关系和变化语义分析等原型,验证了拓扑关系表达模型和计算方法的可行性和实用性。

The learning stage helped subjects obtain useful heuristic information so that they can successfully solve the target logogriph as soon as possible when the target logogriph appeared. We recorded and analyzed high-density ERPs elicited by logogriphs guessed or not.

另外,在"多对多"的实验范式中,由于"干扰因素"的加入,在一定程度上模拟了现实生活中的"原型激活"过程,生态学效度有所提高,很好地在实验室条件下模拟了现实生活中的原型启发现象,即在多个认知事件中激活其中一个相关的有启发作用的原型事件。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结,并分析了虹吸式排水系统的优势;再对虹吸式排水管道进行原型试验研究,采用不同管径不同立管高度,对系统流量、管道压强进行量测,观察了各种工况下的流态,对其水力特性进行研究分析,找出影响水力特性的落差、管径主要因素以及与排水量的关系;进一步应用计算流体力学Fluent软件,采用标准κ-ε模型与RNGκ-ε模型,计算过程应用有限体积法和二阶迎风格式对数值模型进行离散,速度和压力的耦合采用SIMPLE算法,分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析,通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究;本文首次采用结合原型试验与数值模拟相结合的方法,对虹吸式屋面雨水排水系统进行研究,试验与模拟相互验证,并进行拓展,很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题,结果正确合理,为排水管网系统设计和优化研究提供了有效的方法,对工程设计有较好的参考价值。

The learning stage helped subjects obtain useful heuristic information so that they can successfully solve the target logogriph as soon as possible when the target logogriph appeared. We recorded and analyzed high-density ERPs elicited by logogriphs guessed or not.

另外,在&多对多&的实验范式中,由于&干扰因素&的加入,在一定程度上模拟了现实生活中的&原型激活&过程,生态学效度有所提高,很好地在实验室条件下模拟了现实生活中的原型启发现象,即在多个认知事件中激活其中一个相关的有启发作用的原型事件。

We use HOOPE to develop a parallel application of 2D pre-stack depth migration, and the analysis of parallel speed-up is satisfactory. HOOPE-Grid prototype consists of parallel workflow, mobile agent traveling plan generation, complex task coordination.

HOOPE-Grid原型包含并行工作流制作、移动Agent旅行计划生成、复杂任务的协同计算和通讯等功能,目前已利用此原型对油气勘探领域叠前深度偏移成像计算的多种分布式模型进行了初步试用,试用结果证明HOOPE-Grid原型较全面地考虑了大型科学计算中计算资源和数据资源的分布模式,具有一定的实用和参考价值。

ParaBase system also shows that the technical plan for"YH-3"parallel database system is feasible and successful and provides important supports both in techniques and in prototype for the final implementation. Owing to the prototyped system the roundabout course in the final implementation of"YH-3"parallel database system may be avoided or lessened. In addition, this prototype system provides an ideal platform for further parallel database researches too.

ParaBase的实现在现有机器环境和数据库环境下最大限度地验证和支持了&半重写变换&模式实现并行数据库系统的思想并研究其实现效率;证明了&银河-3&并行数据库系统技术方案是可行的和成功的,并为&银河-3&并行数据库系统的最终系统实现提供重要的技术支持和原型支持,使系统实现时不走或少走弯路;此外,该原型系统为进一步研究并行数据库技术提供了一个实验平台。

Taking East China power grid for example, the process of establishing equivalent syst...

以华东电网为例,阐述了等值系统的建立过程,并对等值系统和原型系统进行了仿真分析和比较,仿真结果表明,等值系统可以很好地再现原型系统的动态特性。

Some special features ofthe static mixer tube are demonstrated.4 An evaluation method of velocity-based disturbance effect of fluid field wasproposed. Qualitative results are obtained by using this method in fluid fielddesign and structure optimization of disturbing elements.5 Experimental models are made efficiently and accurately by RPM method.

主要内容包括: 1、总结了化工过程强化技术的现状和强化研究的途径,提出了紧凑式工业炉的概念,确定用静态混合式炉管进行局部强化。2、提出了静态混合式炉管应用的虚拟工程放大研究方法,指出研究中提高效率的关键是计算模型快速生成技术和实验模型的快速原型制造。3、对工业炉的关键部位——炉管,从材料成分、强度、制造等方面对静态混合式炉管的设计、制造进行了分析,与常规炉管对比,说明了静态混合式炉管的独特性和要求。4、应用快速原型方法,迅速、准确地得到了符合精度、强度要求的静态混合式炉管模型,产品的精度和强度完全符合要求,提高了模型制造效率。5、应用计算流体动力学方法,进行静态混合式炉管的工程放大研究。

The state-of-the-art of chemical process and equipment intensificationtechniques is reviewed. A novel concept of compact industrial furnace isproposed, in which tube with static mixer for partly intensification is determined. 2 A virtual engineering scale-up approach is put forward. The key points toimprove the scaling-up efficiency include two tools: one is rapid generationtechniques for computational models in which a re-use library is built, the otheris rapid prototyping manufacturing, employed for rapid generation forexperimental models.3 The tube is the key component for industrial furnace. Material microstructure,high temperature strength, and casting process of the tube with static mixer arediscussed as compared with those of traditional tube. Some special features ofthe static mixer tube are demonstrated.4 An evaluation method of velocity-based disturbance effect of fluid field wasproposed.

主要内容包括: 1、总结了化工过程强化技术的现状和强化研究的途径,提出了紧凑式工业炉的概念,确定用静态混合式炉管进行局部强化。2、提出了静态混合式炉管应用的虚拟工程放大研究方法,指出研究中提高效率的关键是计算模型快速生成技术和实验模型的快速原型制造。3、对工业炉的关键部位——炉管,从材料成分、强度、制造等方面对静态混合式炉管的设计、制造进行了分析,与常规炉管对比,说明了静态混合式炉管的独特性和要求。4、应用快速原型方法,迅速、准确地得到了符合精度、强度要求的静态混合式炉管模型,产品的精度和强度完全符合要求,提高了模型制造效率。5、应用计算流体动力学方法,进行静态混合式炉管的工程放大研究。

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推荐网络例句

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。