LLO型CIMS建模体系结构

随着网络技术的发展、经济全球化、新的企业管理理念的出现以及企业信息化的全面推广，CIMS的概念和内容也在发生变化。本文提出一套LLO型CIMS建模体系结构，帮助多层次、多角度、多方法地建立企业模型，对系统进行描述、模拟和分析；帮助利用参考模型，提高CIMS的效率和质量；将CIMS建模的范围从面向企业内集成扩展到面向企业间集成，从面向信息集成扩展到面向知识集成，从面向功能集成扩展到面向过程集成。在该体系结构的指导下，开发了一些软件工具，如基于因特网的协同建模工具、知识集成模型的建模模块、参考模型管理模块、企业建模与工作流管理一体化工具等，有的已在企业得到初步应用。     

基于Internet的企业模型仿真和优化

基于Ｉｎｔｅｒｎｅｔ的建模系统可以支持远程协同企业建模，利用该系统所建的参考模型库便于查阅和重用，并可将所建模型用于工作流管理。本文主要介绍了实现对基于Ｉｎｔｅｒｎｅｔ的企业模型的建模方法与工具及其系统仿真和优化最后介绍例。     

企业参考模型的粒度分析和建立方法

针对企业参考模型在企业建模中的作用，运用粗糙集理论对企业参考模型的粒度进行理论分析，给出了系统描述特征，模型粒度，模型代表的行业范围等之间的关系，采用关键词来描述企业参考模型的特征，建立参考模型的编码系统，提出参考模型库的设计方法，其特点是：结构柔性化，系统网络化和模型分布化，该研究结果对不同层次的企业参考模型和跨行业的企业参考模型的建立和使用均有参考价值。     

面向企业整体解决方案的集成化建模与执行

论述了关于企业建模及相关研究的新观点，提出了改进后的集成化企业建模体系结构，其中，在生命周期维中研究了模型在各个阶段的演进问题，在视图模型维中引入了产品视图，介绍了产品视图的一般特征和结构。在此基础上，提出了基于模型释放的、在以工作流管理技术为核心的集成平台支持下、面向中企业整体解决方案的集成化建模及执行系统的基本框架，以及该框架中各个层次的主要功能。最后，以参考模型为核心研究了集成化企业建模中的知识重用和管理问题。     

基于本体论的企业参考模型的研究

在分析了参考模型库所面临的问题以及本体论和企业本体论概念的基础上,探讨了本体论在参考模型库中的应用和方法,给出了基于本体论的企业参考模型库的元模型结构,阐述了参考模型本体和参考模型库的建立和应用过程。     

基于Web的企业过程参考模型库管理系统设计

过程建模分析是现代企业规范运作程序，发现管理问题和实施经营过程重构的基础，不少企业针对自身的生产和经营特点建立了许多很有价值的过程模型。如何将这些模型有效地组织起来，在企业经营过程中真正发挥作用，已成为过程建模分析工作成败的关键。本文回顾了过程及过程建模理论和工具的发展，提出了过程模型库管理系统的需求，进而给出了一个基于Web的企业过程参考模型库管理系统的设计框架，最后简述了该系统在企业过程建模和决策中的作用，以及如何将其与过程建模分析工具集成的方法。     

制造企业系统的一个集成化参考模型

提出当前用面向对象建模方法对制造企业进行建模活动中存在的问题,提出一种新的面向对象建模方法,该方法基本能克服现存问题,并用该方法为制造企业系统建立了一个参考模型。该模型覆盖了工厂管理中的经营操作与制订决策的过程。     

生产计划与管理领域的CIM—OSA建模

ＣＩＭ开放系统体系结构（ＣＩＭ－ＯＳＡ）的目标是为企业提供一组开放的参考模型，根据参考模型，结合特定企业的实际情况，就可得到满足特定企业要求的专用模型，本文在分析ＣＩＭ－ＯＳＡ研究内容及建模过程的基础上，建立了机械制造类企业生产计划与管理领域的ＣＩＭ－ＯＳＡ部分通用参考模型。     

基于工作流的知识建模研究

讨论了知识与业务流程的关系，提出了基于工作流的知识建模及其系统框架；给出了模型相似度和关联度的基本算法；讨论了支持知识与知识、知识与人以及知识与过程的集成技术，以及将知识应用到企业的业务流程中的方法。总结实现基于工作流的知识建模关键技术，最后介绍了一个基于工作流的知识建模原型系统的应用。     

生产计划与管理领域的CIM－OSA建模

ＣＩＭ开放系统体系结构（ＣＩＭ－ＯＳＡ）的目标是为企业提供一组开放的参考模型。根据参考模型，结合特定企业的实际情况，就可得到满足特定企业要求的专用模型。本文在分析ＣＩＭ－ＯＳＡ研究内容及建模过程的基础上，建立了机械制造类企业生产计划与管理领域的ＣＩＭ－ＯＳＡ部分通用参考模型。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

Limits of topographic measurement by the scanning tunnelling and atomic force microscopes

Parameters describing the topographic character of a surface (height, surface wavelength, slope and curvature) can be derived from equivalent sinusoidal profiles. The response of a surface-measuring instrument may be modelled in terms of instrument parameters such as stylus radius, and scanning range and resolution. The performance of the instrument may then be mapped as a zone in amplitude-wavelength (AW) space to show the sinusoidal profiles it is capable of measuring. In a first-order analysis the STM and AFM are considered as equivalent to contact-stylus instruments with a notional stylus radius equal to the tip radius plus the gap. Comparisons between different instruments and types of instrument are readily made by mapping in AW space. The error arising from convolution of the sinusoidal profile with that of the finite tip may be quantified and plotted as contours in AW space.