采用工作流的项目管理方法的研究与应用

针对传统航空企业维修保障服务管理的不足,结合航空企业技术服务现状,引入分层控制思想,从宏观项目层和微观流程层两个层面处理航空企业维修保障服务.宏观层面采用项目管理方法,以项目形式组织和管理业务;微观层面采用工作流技术,以流程形式推动项目实施.采用此方式,无论管理人员还是技术员都能掌握各自所需信息,各尽其能,从而提高服务质量和客户满意度.     

从DFM到聚能体--先进制造框架的触发器

通过分析DFM系统的信息双向流程，提炼出可以指导企业活动过程规划的聚能体概念。根据策略、任务、活动到组织的流程构建由策略层、任务层、活动层到功能层的递阶式4层企业运营框架，通过对流程活动的展开和控制方法分析，探讨了该框架的特征和应用前景。     

攀钢热轧MES设计与实现

在分析攀钢热轧板厂现状的基础上,提出了建设MES系统的重要性和紧迫性。攀钢热轧MES系统采用多层体系结构,分别为表现层、业务逻辑层、基础框架层和数据访问层。表现层主要完成用户权限控制,操作画面显示;业务逻辑层主要完成库位管理、计划管理、流程监视、生产实绩管理、质量管理、调度管理、轧辊管理、接口管理;应用服务器主要完成访问控制、数据预约/发布、对象映射、数据库访问、组件管理等。该MES系统的实现显著的提高了热轧板厂管理水平,优化了生产过程,降低了生产成本。     

批流程制造执行系统及其过程建模研究

制造执行系统是一种面向车间层的管理与控制系统 ,而批流程制造执行则是面向车间层的批量管理与控制系统 ,作为连接上层经营控制和底层过程控制的桥梁 ,批流程制造执行系统起着产品控制的作用。在上下信息的集成上 ,它以过程模型为依托 ,以主配方的转化、控制配方的生成为主线 ,将相关的人、设备、物料等集入 ,对它们实行有效地跟踪与管理 ,达到了批流程车间生产管理与控制的一体化操作。过程模型作为实现批流程制造执行系统的“引擎” ,是保证实现有效批量管理与控制的基础 ,文中的过程建模方法增强了批流程企业面向动态产品的自适应能力 ,为动态地建立柔性的配方和柔性的流程线 ,实现敏捷的市场响应和更快的产品上市时间奠定了基础     

[学科发展]新一代信息技术驱动的装备生产过程技术管理创新方法研究

围绕新一代信息技术驱动的装备生产过程技术管理过程，通过表征生产过程中数据、信息、知识及其关联，在装备生产的车间层、企业层以及跨企业层建立新一代信息技术驱动的生产数据、信息与知识的时变空间，阐述新技术在时变空间下的耦合作用机制；研究生产技术进化预测、生产技术进化实施路线、新生产技术升级实施流程与新生产技术项目实施运维等核心内容，形成面向新一代信息技术驱动的装备生产过程技术管理创新方法，助力装备生产企业提质、增效、降本。     

基于Web的流程企业数据仓库体系研究

以大型造纸企业为背景，对基于经营计划系统／制造执行系统／过程控制系统三层结构的流程企业信息流进行分析，对流程企业中的三个层次不同数据特点与需求进行比较，给出了基于web的企业数据仓库体系结构和创建方法。     

MRP算法在工具管理系统中的应用

在分析企业工具管理重要性的基础上，结合ＭＲＰⅡ对模具工装管理的具体要求，提出了企业中模具工装管理的ＭＲＰⅡ处理流程，根据企业对模具工装需求的复杂性，提出了工装ＢＯＭ概念，并以工装需求计划的生成为例，阐述了ＭＲＰ方法的计算机实现流程和实现方法，利用本算法所开发的工具管理系统已在某ＣＩＭＳ应用示范工程中成功地得到应用。     

设计变更项目精细化管理

汽车产品,在其生命周期内要不断的优化和改进自身的性能,扩展功能,从而不断产生设计变更,以满足市场的需求。传统的设计变更项目管理方法管理粗放,存在工装开发管理无序、无旧件预警、旧件平衡时间长、切换后旧件消耗不充分等缺陷。本文通过对传统的设计变更项目管理方法、流程进行分析、研究,构建新的设计变更项目管理方法,编制新的执行流程,同时通过大数据思维、并行管理思维的运用,实现设计变更项目精细化管理,加快项目切换实施,降低企业生产成本,提高产品质量。     

加强管理规范化 实现企业可持续发展

管理规范化是21世纪的一个世界性课题，它体现了企业对效率与核心竞争能力的不断提升需求。所谓管理规范化．是指根据管理理论和企业战略发展需要，合理地制定组织规程、基本制度以及各类管理事务的作业流程(包括战略、营销、理财、生产作业等，可以是各类流程、报表、图示、操作规范等等)，以形成统一、规范和相对稳定的管理体系，并在管理工作中严格按照这些组织规程、制度和流程进行实施，达到管理动作的井然有序和协调高效。     

基于Multi-gent的敏捷售后服务系统研究

为了提高企业售后服务系统的适用性和通用性，建立了一个基于多智能体的敏捷售后服务系统。首先分析敏捷虚拟企业环境下企业对售后服务系统的需求，以及他和传统企业售后服务系统的差异，然后建立由数据层、业务对象层、协同层和访问层四个层次组成的系统框架结构。实现该系统涉及的关键技术包括智能Agent结构设计、Agent之间的协同机制和系统对动态企业模型的支持方法。该系统能够自主地适应企业组织结构和业务流程的动态变化，支持企业流程的快速再造。     

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.     

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....     

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。     

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.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.