Knowledge Ontology Modeling and Application System Development Supporting Product Platform Evolution and Innovation

随着MC逐渐成为企业主流生产模式，基于产品平台的创新模式开始受到企业的重视。作为企业创新战略、核心技术以及组织管理的集中体现，产品平台需要在一定时期维持一定程度的稳定性，才能保证研发和生产系统的稳定运行和盈利；而且，随着市场、技术及资源等的发展和变化，产品平台也将经历新一轮的创新和升级，以保有和提升企业的产品创新能力。新产品开发是创造性思维和灵活运用已有知识和经验的过程，知识在产品创新过程中的作用越来越引起学者们的重视。产品平台作为大规模定制企业进行产品开发生产的基本模式，对知识支持和管理的需求更加迫切。 对产品平台稳定性的分析和评价，在产品平台创新过程和企业发展战略方面有着重要的现实意义。...As MC (Mass Customization) has become the main production mode of the company, the innovation pattern based on product platform has received much attention. As the centralized reflection of innovation strategy, core technology and organization, a certain degree of product platform stability is necessary to ensure the profit and stable operation of production system during some stages. Moreover, al...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械制造及其自动化学号：1992007115114

Product modular planning considering enterprise resources configuration

为满足客户多样化需求,研究了供应商等外部资源参与企业产品平台规划的问题。首先分析了客户需求、协同供应商与产品结构复杂度、品种、批量等定制化参数之间的关系,介绍了产品定制类型量化评价指标,阐述了定制化类型与产品平台、模块化之间的内在关系。介绍了跨企业产品协同的产品平台开发过程,鉴于客户需求和供应商等企业外部因素,提出了模块化产品平台规划的方法,以及基于模糊聚类分析和复合阈值进行模块划分和方案评价的方法。最后以平面铣床跨企业产品平台设计为例,验证了上述方法的有效性。To satisfy diversified customers' requirements,the problem of suppliers and other outsourcing resources involving in product platform planning was studied.Relationships among customer requirements,collaborative suppliers and product structure complexity,variety & batch were discussed,then the evaluation indices for product customization were presented,and the inherent relationships between the type of customization,product platform and modularization were analyzed.The collaborative product platform development process cross enterprises was introduced.Considering the customer requirements,suppliers and other external factors,a planning methodology of modular product platform was put forward.The method of module partition and scheme evaluation based on fuzzy clustering and compound threshold value were discussed.Finally,an example of product platform planning of modular machine tool was given to indicate the effectiveness of the proposed method.国家自然科学基金资助项目(70402013;70772093);福建省科技重大专项资助项目(2008HZ0002-1);福建省高等学校新世纪优秀人才支持计划资助项目---

积雪变化对中国森林凋落物分解影响研究进展

森林凋落物的分解对于维持生态系统物质循环和养分平衡具有重要意义,并受到不同积雪厚度下冻融格局的影响。冻融期(包括冻结过程期、完全冻结期、融化过程期)是冻土区凋落物分解的重要时期,该时期分解的凋落物量约占全年分解总量的一半。积雪减少通常会导致土壤温度降低、冻融循环次数增加,进而影响凋落物分解。通过综述近10年来积雪变化对我国森林凋落物分解影响的研究成果发现,积雪厚度减少在冻融期通常会抑制凋落物质量损失、碳元素释放和纤维素降解,生长季则起到促进作用,从全年来看多数表现为抑制作用。因此,冻融作用造成凋落物的物理破坏,对其分解的促进作用主要发生在后续生长季。积雪厚度减少在冻融期通常抑制氮元素释放,生长季和全年则无明显规律;磷元素和木质素目前研究还存在很大差异。最后,进一步阐述了积雪变化对凋落物分解影响研究存在的问题及未来研究发展方向

TRIZ-oriented patent knowledge ontology modeling and its application

面向发明问题解决理论(TrIz)的专利本体库的构建有助于TrIz创新设计与专利检索。对专利说明书组成部分与TrIz不同原理之间的映射关系进行分析,并在此基础上提出面向TrIz的专利本体建模模型。通过对铣床专利的案例分析,阐述了本体的具体构建过程。最后介绍面向TrIz的专利本体的应用。The construction of patent library based on ontology for TRIZ is helpful to TRIZ innovation design and patent retrieval.The mapping relation between the components of patent specification and the different principles of TRIZ is analyzed,on this basis,the model of TRIZ-oriented patent ontology is proposed.Through the analysis of milling machine patents,the specific process of building up ontology is discussed.Finally the application of TRIZ-oriented patent ontology is introduced.国家自然科学基金资助项目(70402013;70772093);福建省高等学校新世纪优秀人才支持计划资助项

Fundamental research development and outcomes of Institute of Mechanics driven by the National Science Foundation of China

基础科学是人类认识客观世界基本规律的知识体系,这样的知识体系是技术创新、技术革命的先导、源泉和培养创新性人才的摇篮,也是提高原始性创新能力的重要途径。没有基础科学研究的突破,就不会有技术的划时代发展。我国要跻身世界科技强国、建设创新型国家,必须拥有充足的基础科学研究成果和大批高水平的创新人才

Advances in Polymerization Mechanism Catalyzed by Polypropylene Catalysts

评述了自二十世纪五十年代至今近五十多年聚丙烯催化剂的几个重要发展阶段,着重介绍两类(单活性中心与多活性中心)三种聚丙烯催化剂,即zIEglEr-nATTA催化剂、茂金属催化剂和后过渡铁金属催化剂催化丙烯聚合的机理。In this paper,we reviewed the development process for polypropylene catalysts,which is divided into several important periods.In addition,this comments concentrated on two types of catalysts(i.e.the single-and the multi-site catalysts) and three kinds of catalysts(i.e.Ziegler-Natta,metallocene and late-transition iron metal catalysts).We also introduced the polymerization mechanism of the above catalysts.国家自然科学基金资助项目;资助号:2107617

Monte Carlo simulation of CS-1 polypropylene catalyst with multiple active sites

采用MOnTE CArlO模拟方法建立了5活性中心种类聚丙烯催化剂CS-1作用下丙烯均聚过程的随机模型,通过实验与理论模拟相结合的方法确定了随机模型的动力学参数,并采用实验数据对所建模型进行了验证。结果表明,模拟值与实验值基本吻合,表明可采用所建立的MOnTE CArlO模型从分子尺度研究催化剂CS-1作用下的丙烯聚合机理。The model of propylene homopolymerization by CS-1 catalyst with 5 active sites was set up using Monte Carlo simulation,the kinetic parameters of the model were determined via the combination of test and theoretical simulation,and the established model was verified by the test data.The results showed that the simulation values coincided with the test values basically,which showed that the Monte Carlo model could be used to study the mechanism of propylene polymerization catalyzed by CS-1 catalyst from microscope.甘肃省教育厅科研资助项目(项目名称:工业丙烯液相本体聚合过程的稳/动态模拟;项目编号:0814B-01

新型轮-履复合电动轮椅设计与实现

针对很多下肢障碍者或老年人对平地高效移动和安全上下楼梯的需求,设计了一种新型轮—履复合电动轮椅。提出了该新型轮-履复合电动轮椅的技术方案,结合功能需求对其机械结构和控制系统进行了设计;分析了电动轮椅以履带式移动模式上下楼梯的过程并进行了图解说明;制作了电动轮椅的样机并进行了上楼梯实验。结果表明,所设计的新型轮-履复合电动轮椅能够同时实现平地高效移动和安全上下楼梯的功能

Spine minimally invasive surgery simulation force feedback operation training device and method

本发明涉及一种脊柱微创手术模拟力反馈手术培训装置和方法，手持部分由手柄、六维力传感器和传感器衔接件，依次连接在一起；驱动部分包括支撑板、直流电机、啮合齿轮、丝杠以及导轨，其中导轨一端连接所述传感器衔接件，丝杠通过支撑板贴于导轨外侧平行放置，直流电机通过啮合齿轮与丝杠衔接在一起，支撑板将直流电机、丝杠和导轨固定于靠近所述传感器衔接件一侧；钻头部分包括直线滑动件和骨钻钻头，骨钻钻头通过直线滑动件与所述导轨连接。本发明采用闭环控制，保证力反馈数值的精确；节约尸体标本成本以及对应的配套消费，培养方式方便，并能缩短培养年限；迅速的装配和拆卸，这样可以缩减消毒的工序并减少手术模拟时间

DEVELOPMENT OF A NEW GRADE POLYPROPYLENE PRODUCT IN A LOOP REACTOR BASED ON THE STEADY-STATE MODEL

考虑工业丙烯原料中主要存在的主要活性杂质,并结合普遍适用的丙烯均聚机理,提出了适合应用于工业聚合的丙烯均聚机理。在此基础上,耦合质量守恒方程,建立了稳态操作条件下的环管反应器中均聚聚丙烯产品的质量定制模型。采用生成函数法对该模型进行求解,得到了均聚条件下聚丙烯产品性能指标和聚合工艺条件的关系。此外,将插值法引入到聚丙烯新牌号产品的开发中,结合得到的"产品性能指标与工艺条件"之间关系,提出了一种新牌号聚丙烯产品的开发方案。A new propylene homopolymerization mechanism was proposed based on a common propylene homopolymerization and considering the effects of main reactive impurities existing in industrial raw materials.Accerdingly,the steady-state quality model of polypropylene produced in a loop reactor was suggested according to the mass balance equations.Moreover,the model was solved by generation function technique and the relation between the main performance indexes of polypropylene and polymerization conditions was obtained.In addition,the interpolation method was introduced in order to develop a new grade polypropylene product.Accordingly,a development method of new grade polypropylene products was put forward.中国石油天然气股份有限公司兰州石油化工研究中心项目(07L0012)资