网络化制造系统中资源信息集成方法的研究

分析了网络化制造系统中的资源信息集成的必要性。介绍了Web Service技术的特点，论述了用Web Service技术解决资源信息集成的方案及其可行性和有效性。根据成、德、绵区域网络化制造系统中的资源信息集成的开发实践，详细介绍了基于Web Service的资源信息集成系统的设计和实现过程，并给出了核心代码和运行实例。     

数字图书馆信息检索技术及其应用

从数字图书馆的发展现状展开研究,对数字图书馆与传统图书馆进行了比较,分析了信息检索概念和技术。介绍了CBR的特点,重点阐述了数字图书馆多媒体检索技术分类及各自特点,明确指出了数字图书馆建设的意义、应用中存在的问题,展望了数字图书馆的前景。     

面向制造服务的企业间信息集成方案

针对制造企业向供应链后端扩展的战略意义,文中从W企业开展以产品维修服务为主体内容的制造服务发展战略与业务需求为背景,坚持“业务驱动、IT引领”的方针,在新的需求基础上,充分理解业务,采用信息化手段优化、管理、控制业务流程,使业务数据标准化、规范化、集成化。文中以此为目的,提出了以维修服务为主体业务的制造服务企业间信息集成方案,研究了维修服务系统的工作原理以及整体需求。结合具体的系统需求,应用基于组件的系统分析设计思想,获取了系统业务组件及其组件问的依赖关系,最终给出了维修服务系统组件部署方案。     

一种微制造信息系统

为实现对准分子微加工系统的远程控制,同时实现对实验数据的有效管理和共享,阐述了一种以微制造信息系统为主体,集用户信息管理、实验数据信息管理、远程微加工、动态信息发布等技术于一体的远程微制造信息系统。采用理论分析与实践相结合的研究方法,进行实际编程和调试,及时调整软件编程,使得软件具有很好的功能性和健壮性。该系统能够很好地完成远程数据信息的管理,并对简单的装配工作进行远程监控,为后续微制造信息系统的研究提供了可能。     

基于内容的多媒体数据库系统引擎CDB

CDB(Content-based DataBase)是一种基于内容的多媒体数据库引擎，可以嵌入到通用的对象一关系数据库中，使数据库系统综合支持对多媒体数据的常规和基于内容的壹询．本文首先阐述CDB的体系结构，它把信息检索和数据检索结合到数据库中，支持多媒体数据库的基于内容的建立、操纵和维护；然后给出其层次型内容模型，描述多媒体内容的时空结构特征以及信息线索；最后描述用于CDB的基于内容信息检索技术及其设计和实现的用户壹询和操纵接口，包括示例壹询、主观颜色壹询、视频概要和浏览、扩展SQL内容壹询等．     

历史信息学习的相关反馈图像检索

相关反馈技术被有效的应用于基于内容的图像检索.传统的相关反馈未能充分利用检索的历史信息.为了进一步提高检索的效率与准确性,提出一种基于历史检索信息学习的相关反馈检索方法.该方法将每次检索的结果作为历史检索信息保存.进行新的检索时,判断当前查询图像与历史检索信息的语义相关性,预测检索结果,以期减少相关反馈次数.对包含80 00幅图像的图像库实验表明,与传统相关反馈技术相比,该方法明显的改善了检索性能.     

基于压缩域的视频检索系统模型

文章提出了一个基于内容的视频检索系统模型,该模型直接对压缩视频数据进行处理,可节约解压缩的时间,减少运算量,提高系统处理效率。文章对该模型的系统结构以及系统实现所需的一些关键技术进行了介绍。     

An Improved PAC Architecture for Shop Floor Information System in Digital Manufacturing

In order to overcome the weakness of the former production activity control (PAC) architecture, this paper presents an improved PAC architecture. The BIT-PAC architecture has been applied with the use of information technology. It facilitates the information flow from Shop Floor to other areas of the organization and makes the organizations more integrated and productive. This architecture also facilitates the expansion of the Shop Floor functions without disturbing the basic infrastructure. Effectiveness of the BIT-PAC architecture was checked by developing and running application software on a network PC which has supported the dynamic flow of information from Sub-Producers and Sub-Movers to other areas of organization.     

结合边缘信息的图像检索技术

针对基于内容的图像检索技术中因忽略人眼视觉的影响而造成的检索率偏低问题,提出了一种新的图像检索算法.首先,结合人眼的视觉特性,借鉴方块编码的思想提取对表征图像内容有意义的子特征,该特征不仅体现了图像的边缘信息,而且在一定程度上对整幅图像的纹理特征也进行了较好地描述;在此基础上,定义图像的特征描述符.针对描述符自身的特点,采用图像的互信息作为最后的相似性度量准则.实验结果表明同以往算法相比,该算法具有较高的检索效率.     

Manufacturing in the Digital Age: Exploiting Information Technologies for Product Realization

Information technology (IT) is both the key enabler for future manufacturing enterprises and a transformer of organizations and markets. By reducing barriers to collaboration, compressing lead time, eliminating physical movement, and enriching decision-making, IT helps manufacturers achieve their goal of meeting customer needs better, quicker, and cheaper. By providing global reach and easy connectivity, information technology has fostered cooperation while increasing market competition, and heightened customer expectations. Advances in computer and communication technologies combined with rapid changes in organizations have created new opportunities for exploiting information technologies in the entire product realization process. This paper explores these opportunities, and identifies promising directions for both basic and applied research. We first review important trends in organizations, markets, and information technologies—from increasing customer involvement and opportunistic organizational alliances to global reach and connectivity, enterprise integration, and virtualization. Adopting a process viewpoint of the product realization cycle, we translate these trends into high-impact IT applications in design and operations that offer rich potential for applied research and development. Underlying these applications are four broad classes of intelligent information processes—intelligent search, diagnosis and prognosis, collaboration, coordination, and negotiation, and understanding and learning. And, software agents provide an ideal platform to implement these processes. We briefly review developments in these basic research fields, and identify necessary scientific advances that are most important from the manufacturing perspective. Our goal is to synthesize streams of thought from many related disciplines in engineering, science, and management, and develop a framework for examining how information technologies can facilitate and influence manufacturing.     

Designing for Semantic Access: A Video Browsing System

Users of browsing applications often have vague information needs which can only be described in conceptual terms. Therefore, a video browsing system must accept conceptual queries for preselection and offer mechanisms for interactive inspection of the result set by the user. In this paper, we describe a MM-DBMS that we extended with the following components: Our retrieval engine calculates relevance values for the results of a conceptual query by feature aggregation on video shot granularity to offer conceptual, content-based access. To reduce startup delays within sessions, our admission control module admits only complete browsing sessions, if required resources, which are heuristically predicted from query results, are available. In addition, our intelligent client buffer strategy employs the retrieval relevance values to enable flexible user interactions during browsing.     

A Framework for Cross-Language Information Access: Application to English and Japanese

Internet search engines allow access to online information from all over the world. However, there is currently a general assumption that users are fluent in the languages of all documentsthat they might search for. This has for historical reasons usually been a choice between English and the locally supported language. Given the rapidly growing size of the Internet, it is likely that future users will need to access information in languages in which they are not fluent or have no knowledge of at all. This papershows how information retrieval and machine translation can becombined in a cross-language information access frameworkto help overcome the language barrier. We presentencouraging preliminary experimental results using English queries toretrieve documents from the standard Japanese language BMIR-J2retrieval test collection. We outline the scope and purpose ofcross-language information access and provide an example applicationto suggest that technology already exists to provide effective andpotentially useful applications.     

基于Lucene的藏文信息采集及检索系统研究

浅析了当前藏文数据采集与检索存在的问题.基于元搜索技术提出了一种藏文信息采集方案;基于全文检索工具包Lucene并针对藏文的特点,提出了一种藏文信息的索引、检索的设计方案,并对其关键技术进行了探讨.实际系统应用证明方案可行.介绍的数据采集、索引、检索方案同样适用于藏文外的其他语种.     

制造型企业管理信息化技术研究

管理信息化是制造业信息化的重要组成部分,专业的咨询、成熟的软件和规范的实施是管理信息化过程的三大关键要素,本文结合JSERP系统的设计、开发与应用实施,从技术和实践的角度,简要介绍制造型企业管理信息化技术。     

煤炭企业信息化与信息集成

该文讲述了煤炭企业信息化对生产经营的重要性,分析了当前煤炭企业信息化的现状和煤炭企业信息化中存在的问题,并提出通过信息集成的方法解决企业目前信息化的信息孤岛的问题。     

DBORank:对象级别的关系数据库信息检索方法

对象级别的信息检索已经引起越来越多的关注和研究。针对这一研究问题,设计并实现了一个对象级别的关系数据库信息检索方法DBORank,来有效提高关系数据库信息检索效果。DBORank方法从数据库和信息检索两个角度出发,设计了一种灵活有效的评分机制,它既考虑了对象级别数据图的链接结构,又考虑了图中对象结点的内部结构,边的类型和权值,对象内容相关性等因素,同时优化了对象评分的迭代算法。实验表明DBORank方法具有良好的检索效果和效率。     

Enhancing Workflow Management in the Manufacturing Information System of a Small-Medium Enterprise: An Agent-Based Approach

One shortcoming of manufacturing information systems is their inability to integrate and to enhance different information and related functionalities, such as those found in workflow management. Software agents, once added as a new software layer to an existing system, can overcome this problem. Of the fields applying software agent technology, manufacturing, and especially workflow management, is perhaps the most promising for the development of distributed systems. This potential is reflected in the several ongoing research projects that focus on workflow management and share the final aim of integrating and coordinating plant and business activities.The approach presented in this paper can be regarded as an agent-based architecture applied to an existing workflow management system in order to manage new functionalities, e.g., customer relationship management in electronic commerce. This approach is particularly suitable for small medium enterprises with simple manufacturing information requirements and simple or nonexistent computer based workflow management.The model and some important features of system implementation, such as the knowledge modeling graphical user interface, the communication model, and a simple practical example of the architecture's use, are described.     

基于内容的智能图像检索系统设计

由于Internet中的图像信息资源是异构的．人们要想从中发现、收集和维护自己需要的信息要花费大量的时间和精力。为了更有效地利用Internet上的图像资源，文章从基于内容的图像检索的现状出发，运用Agent技术，提出了一种基于内容的智能图像检索系统的初步模型，并设计了其中核心部分的基本结构：用户Agent、协调器和信息Agent，从而弥补了现有图像检索系统在自适应用户兴趣和交互式等方面的不足，提高了系统的检索正确率和检索能力。     

A Language for Content-Based Video Retrieval

We present an effective technique for automatic extraction, representation, and classification of digital video, and a visual language for formulation of queries to access the semantic information contained in digital video. We have devised an algorithm that extracts motion information from a video sequence. This algorithm provides a low-cost extension to the motion compensation component of the MPEG compression algorithm. In this paper, we present a visual language called VEVA for querying multimedia information in general, and video semantic information in particular. Unlike many other proposals that concentrate on browsing the data, VEVA offers a complete set of capabilities for specifying relationships between the image components and formulating queries that search for objects, their motions and their other associated characteristics. VEVA has been shown to be very expressive in this context mainly due to the fact that many types of multimedia information are inherently visual in nature.