80 research outputs found

    A Report on the Translation of Creative Confluence(Excerpts)

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    《创新融合》是由约翰•本杰明出版公司于2014年出版的一本学术著作,作者为JohanF.Hoorn。该书从物理学、生物学、生理学、心理学、哲学、几何学和计算机建模等领域进行论证,全面阐述了创新融合理论。译者选取本书作为本次的翻译项目,通过阐述译前的准备工作,翻译的指导思想,翻译过程中所遇到的问题及其解决方法,以及翻译完成后的经验与心得,全面展现了本项目的完成过程。通过本项目的实践,译者提升了自身的翻译能力和技巧,同时也为今后的翻译研究奠定理论和实践基础。 本报告正文由四章构成。在第一章中,译者阐述了本项目的相关背景,包括作者和原作介绍,选择本项目的理由和意义,译前的工作准备,以及...Creative Confluence is a book published in 2014 by John Benjamins Publishing Company, whose author is Johan F. Hoorn. From the perspectives of physics, biology, physiology, psychology, philosophy, geometry and computer modeling, this book argues for the theory of creative confluence in a comprehensive way. The translator chooses this book as a translation project and elaborates on the preparations...学位:翻译硕士院系专业:外文学院_翻译硕士学号:X200811001

    Analysis and Design of the Online Tax Enterprise Propaganda Interactive Platform

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    搭建网上税企宣传互动平台是昆明市国家税务局按照纳税服务工作整体部署,以科学和创新理念为指导,从纳税人对新时期纳税服务的需求出发,满足纳税人合理成本需求、降低税收成本、提高税收征管效率、实现服务目标的最佳载体,是构建“5A”(Anyone、Anytime、Anywhere、Anyhow、Automatic)纳税服务信息格局的新突破,是推动服务型税务机关建设不断迈向深入,实现纳税服务和税收征管质效双赢的纳税服务发展目标。 论文依托信息化技术,以因特网为支撑,在现有网络申报系统硬件平台上,搭建网上税企宣传互动平台,拓展和畅通税企沟通渠道。分析与设计网上税企宣传互动平台将如何通过网上税企宣传互动平台...Build online tax enterprise propaganda interactive platform is the Kunming Municipal State Taxation Bureau in accordance with the tax payment service overall deploy, scientific and innovative idea as the instruction, from the taxpayer to the new era of the tax payment service needs, to meet the reasonable needs of taxpayers cost, reduce tax cost, improve the efficiency of tax collection and manage...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201023039

    Analysis of EVA application in railway enterprises' performance

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    铁路企业长期以来经营效益低下,企业管理者打着确保安全的旗号肆无忌殚地吞噬着股东的权益资本,造成大量资产闲置。究其原因,在于铁路企业作为国企存在着“所有者缺位”,而基于传统会计指标基础上的业绩评价体系又不能促使经营者站在投资人的立场上组织企业的日常生产和经营活动,并视权益资本是无成本的。本文讲述了一种全新的财务观念----EVA(经济增加值),强调在计算公司利润时,必须考虑公司的资金成本,并通过EVA理论建立一种新的以EVA增加值为基础的薪酬激励体系,通过对企业管理者的经营业绩考核使经营者站在所有者角度思考如何提高企业经营业绩,实现股东利益最大化。并结合铁路企业的代表----广深铁路股份有限公司...Railway enterprises have been known for low operation efficiency for years. The management, under the pretence of ensuring safety, recklessly misappropriates shareholders’ equity, leaving large capital funds idle. This arises from the “absence of owner” incident to railway enterprises as state-owned establishments; besides, the performance evaluation system, which is based on traditional accountin...学位:工商管理硕士院系专业:管理学院工商管理教育中心_工商管理硕士(MBA)学号:19991512

    机器人加工在数字化制造中的应用

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    利用机器人作为测量工具,建立CAM空间与作业空间的映射一致性。利用集成系统结构化的参数,对CAM产生的刀轨迹进行后置处理,生成机器人加工轨迹,从而实现CAD/CAM/Robot集成的数字化编程。针对本体中的几何参数和零位误差,采用静态力控传感器和缩放产品CAD模型的方法,校正和补偿机器人的轨迹误差。集成系统结构化建立后,其石材雕塑不同加工侧的错位误差不超过0.7 mm,采用静态力控传感器和缩放模型的方法,可以有效校正和补偿本体非结构化以及零位误差产生的轨迹误差,其磨削和铣边精度达到0.25 mm。福建省科技重大专项(2016HZ0001-6

    The Method Research of Integrated Robot Grinding Technology for Custom Femoral Prostheses

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    影响非骨水泥假体长期稳定的因素是无菌松动,微动和应力遮蔽通过破坏假体近端的骨整合导致假体的无菌松动,而微动和应力遮蔽与假体的力传递相关。定制式假体的设计模型来源于病人股骨的CT数据,它建立了有限元模型与手术模型的一致性,通过有限元模型上的力传递分析,优化假体的设计和假体与髓腔的匹配,控制手术后假体上的力传递,避免假体近端大的微动和应力遮蔽而破坏假体在髓腔中的初期稳定性,促进假体近端的骨整合。针对定制式假体,发展一种新型的集成技术,形成定制式假体设计、有限元分析和制造一体化,特别是采用CAD/CAM/Robot集成技术加工定制式假体,在建立CAM软件空间各单元与机器人工作空间对应各单元一致性基础上,提高了假体的制造精度。仿真和实验结果表明,有限元分析方法可以控制假体上的力传递,机器人磨削柄体的误差小于0.9mm。The reason that affects long-term stability of cementless femoral prosthesis is aseptic loosening, micromotion and stress shielding that are related to the force transfer of prosthesis can destroy the osseointegration of proximal prosthesis and make the prosthesis to form aseptic loosening in the femur cavity. The design model of cnstomfemoral prosthesis is from the CT reconstruction of patient femur, the fit of prosthesis and femoral cavity at designperiod of the prosthesis is same the fit at surgical operation period, then the results of finite element analysis at design period can be used to control the force transfer of prosthesis at postoperative, the improper micromotion and stress shielding of proximal prosthesis that destroy the primary stability of prosthesis in femoral cavity can be avoided and the osseointegration of proximal prosthesis can form. In this paper, we develop the new technology to integrate the design, finite element analysis and manufacture of the custom prosthesis, specially, we use the CAD/CAM/robot integration method to machine custom prosthesis. On the basis of establishing consistency of each module in CAM software space and robot working space, the manufacturing precision of the prosthesis was improved. In the conclusion, the finite element analysis of the custom prosthesis can control the force transfer of prosthesis and the milling errors of custom prosthesis is less than 0.9 mm

    Design, manufacture and experimental analysis of cementless hip prosthesis in torsional force transmission

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    背景:人体股骨髓腔具有扭转的解剖结构,如果股骨髓腔的扭转结构被复制到假体的柄体上,当假体插入髓腔并在假体上加载力时,假体将加载的力转换成股骨髓腔对柄体的扭转力并将该力传递到股骨近端。目的:优化股骨近端的力传递,避免假体近端应力遮挡。方法:利用人股骨标本的CT图片重建股骨髓腔的3D模型,将该3D模型作为柄体的设计模型。将定制式柄体模型与标准假体的近端模型拼合,形成定制式假体。采用机器人磨削技术制作定制式假体,并将定制式假体与标本股骨髓腔匹配。利用有限元仿真和实验方法分析假体上加载的力与假体近端扭转微动的关系。结果与结论:仿真和实验结果表明,股骨髓腔与柄体匹配的扭转结构,可有效地将假体上加载力以扭转力的形式传递到股骨近端,假体近端的扭转微动与柄体的微动相关,而柄体的微动可通过改变柄体与髓腔的匹配区大小得到控制。BACKGROUND: Human femur medullary cavity has torsional anatomic structure. If the femur medullary cavity's torsional structure is copied to the stem of the prosthesis, the prosthesis will transform the force loaded to torque between femur medullary cavity and prosthesis stem, and the torque is transmitted to the proximal femur when the prosthesis is inserted in the medullary cavity and load force on the prosthesis. OBJECTIVE: To optimize the force transmission of the proximal femur, and to avoid the stress shielding at the proximal end of the prosthesis. METHODS: We reconstructed a three-dimensional(3D) model of the femoral canal with the CT images of specimen femur and took the 3D model as the design model for prosthesis stem. The customized stem model and the proximal model of standard prosthesis could be put together to form customized prosthesis. We took advantage of robot grinding technology to manufacture the customized prosthesis, and matched it with specimen femur canal. Finite element analysis simulation and experimental methods were used to analyze the relationship between the loading force on the prosthesis and the micromotion of proximal end of the prosthesis. RESULTS AND CONCLUSION: The simulation and experimental results showed that the torsional structure matching by femoral canal and stem could effectively transmit the force on the prosthesis to the proximal end of the prosthesis in the form of torque. The torsional fretting of the proximal end of the prosthesis was related to the movement of the handle body. However, stem micromotion can be controlled by varying the matching size between stem and medullary cavity

    基于误差标定的医疗机器人视觉跟踪方法研究

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    影像在疾病诊断和手术计划中占有重要地位,随着机器人技术的发展以及微创手术的广泛采用,影像与机器人构成一体,形成计算机集成外科手术系统。影像不仅是疾病诊断的重要工具,它也对手术机器人进行定位、引导,对手术器械进行跟踪和控制。由于视觉和机器人具有各自的坐标系统,它们之间存在误差,当在视觉空间控制机器人运动时,该误差会映射到机器人的轨迹上。在前期手术计划、机器人视觉控制、自动显微操作的研究成果基础上,研究计算机集成外科中的手术机器人轨迹精确控制问题。采用机器人在视觉空间的运动误差对视觉系统和机器人系统间的坐标系误差进行标定,从而精确控制机器人的轨迹。误差标定方法只需要让机器人走三个点就可以完成系统坐标标定。在实验中,利用视觉系统控制机器人运动,模仿微创手术中对机器人末端器械的导引,结果表明,采用递归标定方法可以将机器人的轨迹误差控制在2个像素范围内。国家自然基金资助(50875222);福建省自然基金资助(2009J01265

    Simulation of manipulating micro particle by micro electromagnetic force with wire arrays

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    当磁粒子包裹相应的外层物质时,可以与细胞产生选择性黏附,该特性可用于细胞分离、分选、药物运输等。在硅片上制做导线阵列,通过对相应导线阵列的通断电控制,可以控制微磁粒子运动,也就控制了与其相联的细胞运动。细胞运动到指定位置,借助工具对细胞进行操作,研究细胞特性。讨论导线阵列的MEMS工艺,对通电导线产生的磁场、温度场进行了仿真,了解电磁力大小的影响因素。The magnetic particle according to the outside layer material wrap up,can produce the selectivity with cell to stick to attach,this characteristic can be used for the cell separation,choose separately,the medicine conveyance etc.The electric order of different wires is changed to form a moving micro electromagnetic field,and then the particle movement can be manipulated,and also the cell movement can be manipulated.When the cell reaches the destination,use the tool to manipulate the cell and research the characteristic of the cell.And discussing the MEMS technique of wire array,simulate the magnetic field and temperature field,and know the influence factors on electromagnetic force

    Simulation of Manipulating Microparticle with Wire Arrays and Heating of Wires

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    磁粒子根据所包裹的外层物质,可以与细胞产生选择性黏附,该特性可用于细胞分离、分选、药物运输等。基于载流导线阵列对磁性粒子的微电磁力作用,当磁粒子和细胞联结在一起时,便可对细胞进行定位和运动控制。改变不同导线的通电时序,就可以形成运动的微电磁场,从而控制微磁粒子运动,也就控制了细胞的运动。仿真结果证明,采用导线阵列产生的运动微电磁场,可以对细胞进行精确定位和运动控制。同时,也对导线发热量进行了仿真,结果表明,在驱动磁粒子运动时,导线的发热量在允许的范围内。The magnetic particle can produce selective adhesion to cell according to the wrapping layer, and this feature can be used for the cell separation, selection and medicine transportation, etc. Based on the micromagnetic force of conducting wire array to the magnetic particle, the positioning and sport controlling of cell can be performed if it is combined to magnetic particl. A moving microelectromagnetic field is formed by changing the electrying orders of the current-conducting wires to manipulate the movement of the magnetic particle, i.e. the cell. The simulation results indicated that the cell can be postioned and manipulated exactly by the microelectromagnetic field created by the electrical wire arrays, and the output calories of electric current is within the scope allowed in driving the particle

    A Study of Stereo Visual/Force Feedback Based on Prediction

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    【中文文摘】提出了一种多传感器混合的机器人伺服控制方案 ,该方案在任务初始阶段利用视觉传感器对对象进行跟踪 ,在任务的末段利用力传感器对对象运动进行引导。这样就避免了使用单个传感器所产生的强冲击 ,增加了机器人控制的柔顺性和鲁棒性。在视觉跟踪阶段 ,为了提高跟踪速度 ,利用约束卡尔曼滤波器建立预测器 ,对物体图像的未来位置进行预测 ,这样就减小了图像处理的区域 ,提高了图像处理的速度。从仿真结果来看 ,视觉 /力反馈的混合控制提高了机器人对任务的适应性和工作过程的柔顺性。 【英文文摘】A new control scheme of multiple sensors fusing is expressed,in this scheme,the visual sensors are used to track objects in the beginning phase and the force sensor is used to control object moving in the end phase,in this way the extra impact force is avoided when single sensor is used and the movement of robot is submissive and robust.In order to get a high tracking speed,a constraint Kalman filter is used to predict the position of feature point,in this way the region of image processing is minished and the speed of image processing is improved. Simulation results show that the adaptability and submissiveness of robot is improved when fusing stereovisual and fo rce feedback is used.自然科学基金重大 ( 5 9990 470 )资助项
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