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1.
Product data management (PDM) is a unique technique that integrates and manages all applications, information and processes defining a product from design to manufacture, and to end-user support. However, exploration of valuable information and knowledge from the PDM system has become a key in improvement of efficiency and implementation of knowledge management in an enterprise. This paper introduces a data mining prototype system model based on PDM, and emphasizes some important techniques such as design of the prototype system framework, methods of data selection and integration of data mining prototype system and PDM. The model basically solves the problem of functional losses in mining and analyzing data in PDM. Application of data mining to PDM is meaningful to the ideas and techniques of PDM, and to the rapid development of data mining application itself. Also, it is useful in improving development and usage of enterprise databases. 相似文献
2.
An integrated intelligent management is presented to help organizations manage many heterogeneous resources in their information system. A general architecture of management for information system reliability is proposed, and the architecture from two aspects, process model and hierarchical model, described. Data mining techniques are used in data analysis. A data analysis system applicable to real-time data analysis is developed by improved data mining on the critical processes. The framework of the integrated management for information system reliability based on real-time data mining is illustrated, and the development of integrated and intelligent management of information system discussed. 相似文献
3.
The theory and method of system integration for the real-time monitoring of core rock-fill dam filling con- struction quality are studied in this paper. First, the importance analysis of system integration factors is carried out with the analytic hierarchy process. Then, according to the analysis result of integration factors, the conceptual model of system integration is built based on function integration, index integration, technology integration and information integration, the index structure of core rock-fill dam filling construction quality control is constructed and the method of function integration and technology integration is studied. The mathematical model of process monitoring is built according to monitoring objective, process and indexes. Research results have been applied in Nuozhadu core rock-fill dam construction management, realizing system integration through building appropriate monitoring work flow and comprehensive information platform of digital dam. 相似文献
4.
ZHUHong FENGYu－cai 《上海大学学报(英文版)》2001,5(4):299-307
This paper propses a security policy model for mandatory access control in class B1 database management system whose level of labeling if tuple.the relation-hierarchical data model is extended to multilevel relation-hierarchical data model.Based on the multievel relation-hierarchical data model,the concept of upper-lower layer relational integrity is presented after we analyze and eliminate the covert channels caused by the database untegrity,Two SQL statements are extended to process polyinstantiation in the multilevel secure environment.The system is based on the multievel relation-hierarchical data model and is capable of integratively storing and manipulating multilevel complicated objects(e.g.,multilevel spatial data) and multievel conventional data(e.g.,integer,real number and character string). 相似文献
5.
A cluster analyzing algorithm based on grids is introduced in this paper,which is applied to data mining in the city emergency system. In the previous applications, data mining was based on the method of analyzing points and lines, which was not efficient enough in dealing with the geographic information in units of police areas. The proposed algorithm maps an event set stored as a point set to a grid unit set, utilizes the cluster algorithm based on grids to find out all the clusters, and shows the results in the method of visualization. The algorithm performs well when dealing with high dimensional data sets and immense data. It is suitable for the data mining based on geographic information system and is supportive to decision-makings in the city emergency system. 相似文献
6.
7.
Traffic monitoring is of major importance for enforcing traffic management policies. To accomplish this task, the detection of vehicle can be achieved by exploiting image analysis techniques. In this paper, a solution is presented to obtain various traffic parameters through vehicular video detection system( VVDS). VVDS exploits the algorithm based on virtual loops to detect moving vehicle in real time. This algorithm uses the background differencing method, and vehicles can be detected through luminance difference of pixels between background image and current image. Furthermore a novel technology named as spatio-temporal image sequences analysis is applied to background differencing to improve detection accuracy. Then a hardware implementation of a digital signal processing (DSP) based board is described in detail and the board can simultaneously process fourchannel video from different cameras. The benefit of usage of DSP is that images of a roadway can be processed at frame rate due to DSP‘s high performance. In the end, VVDS is tested on realworld scenes and experiment results show that the system is both fast and robust to the surveillance of transportation. 相似文献
8.
In this paper,an approach to use run-time information to discover knowledge about software systems thus fa- cilitating program comprehension is presented.Some dynamic metrics based on traces of the subject system execution are proposed.A method of getting these dynamic metrics is introduced,in which instrumentation is implemented by using re- flective mechanism based on an open compiler.The system run-time information is captured during the instrumented system running and is then analyzed to get these dynamic metrics.A case study is given to illustrate the use of these dynamic metrics, i.e.,identifying critical components of the subject system.These critical components should be focus on user attentions in order to understand the subject system well. 相似文献
9.
Implementing VLPR systems based on TMS320DM642 总被引：1，自引：0，他引：1
This paper gives a practical schema for using DSP boards to construct Vehicle License Plate Recognition (VLPR) modules that could be embedded in any Intelligent Transportation System (ITS). Using DSP can avoid the heavy investment in dedicated VLPR system and improve the computational power compared to PC software environment. Low cost, high computational power, and high flexibility of DSP provide the License Plate Recognition System (LPRS) an excellent cost-effective solution to execute the major part of the recognition tasks. This paper describes a successful implementation of VLPR system based on Texas Instruments (TI)'s TMS320DM642. The DSP board acquires video (which could be output to a monitor for surveillance) from a camera, captures images from the video, locates and recognizes the license plates in images, and then sends the recognized results and related images after compression to a host PC through the network. Finally, the overall software is optimized according to the features of DM642 chip. Experiments showed that the DSP VLPR system performs well on the local license plates, and that the processing speed and accuracy can meet the requirement of practical applications. 相似文献
10.
The methodology of visual simulation for a tunnel engineering construction schedule is presented. Visualization of simulation model, calculation and result of construction schedule simulation is realized, and the construction simulation and the resource optimization of tunnel engineering are made. A risk analysis and a decision-making method of tunnel engineering construction schedule based on visual simulation are presented. Furthermore, using S curve theory and schedule management method, the real-time management and control method of tunnel engineering construction based on visual simulation is presented. The application to the tunnel engineering construction schedule analysis and management shows the feasibility and effectiveness of the method presented in this paper. 相似文献
11.
XIONG Qiang 《教育技术导刊》2007,(15)
PDM是一种管理与产品相关的信息和过程的技术,它的应用能缩短产品设计周期,减少工程设计修改,加快产品投入市场进度,削减总成本。阐述了PDM的产生、发展历程及其未来发展趋势。 相似文献
12.
Product data management (PDM) is a unique technique that integrates and manages all applications, information and processes defining a product from design to manufacture, and to end-user support. However, exploration of valuable information and knowledge from the PDM system has become a key in improvement of efficiency and implementation of knowledge management in an enterprise. This paper introduces a data mining prototype system model based on PDM, and emphasizes some important techniques such as design of the prototype system framework, methods of data selection and integration of data mining prototype system and PDM. The model basically solves the problem of functional losses in mining and analyzing data in PDM. Application of data mining to PDM is meaningful to the ideas and techniques of PDM, and to the rapid development of data mining application itself. Also, it is useful in improving development and usage of enterprise databases. 相似文献
13.
产品数据模型是产品数据管理中信息集成的基础，本提出了基于产品对象的数据管理方式，在此基础上描述了PDM中的面向对象的产品数据模型。根据产品数据模型提出了基于产品对象的通用数据、设计数据、制造数据3棵树组织产品数据的方法，为现在并行产品设计方式提供了有力的支持。 相似文献
14.
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ ＩｎｔｈｅｉｍｐｌｅｍｅｎｔａｔｉｏｎｏｆＣＩＭＳｉｎｅｎｔｅｒｐｒｉｓｅｓ,ｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅＣＡＤ/ＣＡＭｔｅｃｈｎｏｌｏｇｙａｎｄｔｈｅａｐ ｐｅａｒａｎｃｅｏｆｍａｔｕｒｅＣＡＤ/ＣＡＭｓｏｆｔｗａｒｅｐｒｏｖｉｄｅｒｅｌｉａｂｌｅａｎｄｅｆｆｉｃｉｅｎｔｄｅｓｉｇｎｔｏｏｌｓｆｏｒｔｈｅｅｘｐｌｏｉｔａｔｉｏｎａｎｄｄｅｖｅｌ ｏｐｍｅｎｔｏｆｐｒｏｄｕｃｔｓ.ＵＧＩＩ (ａＣＡＤ/ＣＡＭｓｏｆｔｗａｒｅｏｆＥＤＳｃｏｒｐｏｒａｔｉｏｎ)ｈａｓｂ… 相似文献
15.
产品数据管理系统已经成为企业实现信息集成不可缺少的环境平台．通过对C／S结构和B／S结构的PDM系统的研究，提出了一种混合模式PDM信息化集成系统模型，说明了该系统模型的三层结构和体系结构的实行方案，分析了以产品结构与配置管理为核心的PDM系统产品配置规则、算法和该模型向Intemet扩充的功能，该体系结构有利于企业提高自身的竞争力． 相似文献
16.
陆静平 《重庆大学学报(英文版)》2003,2(1)
1. Introduction Product data management (PDM) is a technology helping workgroup, department, division, or enterprise manage product data and development process throughout the product life cycle, from inception, through development and production to dispatch and beyond. As an integration tool connecting many different areas, PDM manages product data throughout the enterprise, ensuring that right information is available to the right person at the right time and in the right form. Web-based … 相似文献
17.
本文讨论了PDM的本质、PDM在高校信息化中应用的可行性，并设计了以学生成才为中心的PDM与应用系统的结构。围绕高校学生管理信息系统的建设，我们选择了PDM用于提高应用系统问的集成。 相似文献
18.
在传统故障诊断基础上，将多Agent技术（MAS）应用于复杂系统故障诊断领域，是求解复杂过程故障诊断问题的一种新尝试．研究了基于MAS的分布式智能故障诊断模型，基于一种分布式Agent诊断系统结构原型系统，重点研究了诊断问题的任务辨识、分解问题，构建了基于Agent的任务分配的综合遗传算法和模拟退火算法的混合算法．应用表明，该算法具有很好的可扩展性、适应性和稳定性． 相似文献
19.
用PowerBuilder开发电镜室信息管理系统 总被引：1，自引：0，他引：1
介绍了电镜室信息管理系统的开发过程，从电镜室日常信息的实际应用出发，采用Power Builder系统开发工具开发，可有效提高工作效率，实现了电镜室信息管理的规范化。 相似文献
20.
随着我国城市化的迅速发展和城镇人口的不断增加,给公共交通管理与建设提出新的挑战。将丰富的地理信息、(实时)交通信息、人口分布统计信息、社会经济信息等以及最新的地理信息系统(GIS)技术引入公交管理与规划中,并以建筑物或居民区为选址设站与路线规划的研究对象,能大大提高公交管理和规划的智能化与精细化水平,更好地适应公交规划、建设和管理的发展需要,提高公交系统设计的人性化水平。从城市公交查询管理系统建立的必要性出发,分析了基于组件式地理信息系统技术的公交查询管理系统的设计,探讨了关键技术的实现,并总结概括该系统的创新技术特点。 相似文献