Construction-specific spatial information reasoning in Building Information Models

In recent years, there have been significant advances in modeling technology for object-oriented building products. However, the building models are still lacking of providing construction-specific spatial information required for construction planning. Consequently, construction planners visually analyze building product models and derive geometric characteristics such as bounded spaces and exterior perimeter to develop detailed construction plans. Such a process presents fragmented information flows, from building product information to construction planning, that rely on subjective decisions of construction planners. In order to overcome these drawbacks, this research proposes a geometric reasoning system that analyzes geometric information in building designs, derives the construction-specific spatial information, and uses the information to assist in construction planning. The scope of presented work includes detecting work packages formed by faces during construction, such as large work faces and bounded spaces, and using information in the work packages directly to support planning of selected indoor construction activities. The main features of the proposed system named Construction Spatial Information Reasoner (CSIR) include a set of relationship acquisition algorithms, building component relationship data structure, and interpretation of the relationship to support detailed construction activity planning. The relationship acquisition algorithms identify adjacency between building components that is stored in the relational data structure. Then, acquired adjacency relationships are transformed into a set of graphs that represent work packages. To implement the proposed approach, CSIR utilized a commercially-available Building Information Modeling (BIM) platform and the algorithms were imbedded to the BIM platform. For validation, CSIR was tested on a real commercial building. For interior ceiling grid installation activities, CSIR successfully detected existing work packages and analyzed the spatial characteristics impacting construction productivity. The major contribution of the presented research would be to enable a realistic analysis of building geometric condition that is not possible in current BIM and a seamless information flow from building product information to construction process plans. These can potentially reduce current manual and error-prone construction planning processes. Limitations and future research suggestions are also presented.     

制造业信息化建设

推进制造业信息化是落实"以信息化带动工业化"战略、走新型工业化道路的重要举措。推进制造业信息化是《国家中长期科学和技术发展规划纲要》提出的重要任务;是面向国民经济建设主战场,整合科技资源、实施"以信息化带动工业化"战略、走新型工业化道路的重要举措;是推进经济结构调整和经济增长方式转变的重要手段。制造业信息化将信息技术、自动化技术、现代管理技术与制造技术结合应用,推进设计制造数字化、生产过程智能化和企业经营管理信息化。用高新技术改造和提升制造业,促进制造业研发设计、生产制造、企业管理和市场营销的变革,带动产品设计和制造模式的创新、企业管理和经营模式的创新以及企业间协作模式的创新,是新时期我国制造业适应全球竞争环境、生存和发展的必由之路,对提升我国制造业的自主创新能力和市场竞争能力具有重要意义。     

A semiotic framework to understand how signs in construction process simulations convey information

Planning the production sequence for a construction project requires the combination and transfer of information and knowledge from a large variety of areas. To support this knowledge combination and transfer, construction process visualizations, also referred to as 4D CAD, have proven to be valuable tools. Within these visualizations, signs, such as icons, indexes, or symbols, are often used to visualize contextual information related to the different construction activities. To understand the mechanisms of how these signs meaningfully convey such contextual information, this paper introduces a semiotic framework consisting of semiotic concepts, their definitions and relations. This paper also illustrates the power of the framework by applying it for analyzing the signs used in two construction process visualizations.     

基于信息资源规划的信息化应用建设管理新模式研究

文章首先指出了信息资源规划的信息化应用系统的概念与作用,接着介绍了信息化应用建设管理新模式的框架,其中包括模式的理念、模式的组成、模式的运用步骤等内容.最后文章还对信息化系统应用的发展做出了展望,希望能够引起人们对这一问题的进一步重视,能够为实际工作提供借鉴和指导.     

纺织ERP实施现状及需求特点分析与设计

当前纺织企业迫切需要应用ERP系统来提高生产经营管理水平,但其在纺织行业中的应用却不尽人意,这是因为纺织行业在管理要求、生产流程等方面具有显著的行业特点。论文在分析纺织企业EPR应用现状及存在问题的基础上,深入剖析了纺织行业ERP与机械等行业ERP软件的主要差异,然后从纺织行业ERP的实际需求特点和生产流程出发,提出了纺织ERP系统设计的具体思路和方法。     

大数据下网络资源信息可验证加密仿真研究

网络资源信息加密是目前计算机系统对信息进行保护的一种最安全可靠的办法.它利用密码技术对信息进行加密,起到保护信息的安全的作用.针对传统加密方法存在加密时间过长、安全性较差等问题,提出了一种基于小波变换的网络资源信息可验证加密方法.利用数据搬移以及量化的方法,构建可验证加密协议模型.根据可验证加密协议模型,引入布隆过滤器...     

Assessing the impact of quality determinants and user characteristics on successful enterprise resource planning project implementation

As barriers to transnational trade and investment have been lowered due to globalization, and information and communication technologies have improved, multinational firms can conduct operations with increased ease. Enterprises can also utilize cost-advantageous production resources and export products to expand their global market. Enterprise resource planning (ERP) systems serve the purpose and have become useful instruments for managing multinational operations. Notably, ERP systems integrate information platforms to reflect operations at each operation point in real time and generate information as a basis for decision-making and resource allocations. Thus, ERP systems are essential to global logistics management and collaboration. However, vertical and horizontal evaluations of information systems are necessary to determining the effectiveness and success of project implementation. This study examines the impact of quality determinants from literature in assessing benefits using an information systems success model. The cause-and-effect relationships between model constructs are tested using structural equation modeling. An empirical study of leading manufacturers adopting ERP systems is used to investigate corporate benefits related to information quality, system quality, service quality, system use, and user satisfaction. The analytical results can be a reference for practitioners and researchers evaluating the effectiveness of management information systems.     

探讨企业信息化的建设与发展

自从我国加入世界贸易组织后,我国经济发展速度逐步加快,我国成功举办奥运会和世博会都对我国的经济发展有促进作用。目前越来越多的企业重视对企业信息化的建设与维护,从信息化管理的角度去加强企业自身的发展多元化和发展动力,将企业打造成具有一定优势的信息化产业模式,在企业的管理与制度中都添加进信息化技术与方法,加强计算机与人工配合等工作效率的提升,开展现代化模式的企业运作方式,提高企业市场竞争力,形成企业本身的特有发展模式,在市场中提高灵活性欲科学性的监督管理能力。     

An approach to enterprise process dynamic modeling supporting enterprise process evolution

This study presents an evolutionary approach to support dynamic enterprise modeling for enterprise process cooperative scheduling and management. In this paper, an evolutionary dynamic enterprise process modeling method was proposed from the concepts of enterprise process evolution to zero-time enterprise modeling and layered complex enterprise modeling. Based on an autonomous agent development platform, an agent-based enterprise collaborative modeling environment has been implemented by integrating several software resource agents that wrap main function modules of EPMS. Scheduling strategies, algorithms, and process-driven cooperative scheduling mechanism are also discussed.

我国中小企业信息化问题分析

在日益激烈的市场竞争中,信息化是中小企业提高竞争能力、促进持续发展的必然选择。本文从中小企业信息化建设的必要条件入手,深入分析现阶段我国中小企业信息化建设中存在的问题,并针对这些问题提出了具体的对策和建议。     

Effective digital collaboration in the construction industry – A case study of BIM deployment in a hospital construction project

Building information modeling (BIM) and related digital innovations can serve as a catalyst for more transparency, tighter integration, and increased productivity in the architecture, engineering, and construction industry. Yet, many project teams struggle with how to work based on the new technology. Collaborative design based on shared information systems like BIM requires changing traditional and institutionalized work practices and routines. A case study of integrated BIM design in a large healthcare construction project serves as an example for how commonly experienced challenges can be overcome. The project has been awarded BuildingSMART's 2015 award for ‘outstanding open BIM practice’ making it Norway's role model for BIM practice. Based on diffusion of innovations theory, we identified the following set of key factors enabling digital collaboration in this project: change agents, new roles and responsibilities, a cloud computing infrastructure, BIM contracts, and a BIM learning environment. The findings presented in this article may serve as an example for BIM implementation and collaborative work in construction projects.     

基于通用物料清单的PDM与ERP集成

产品数据管理(PDM)和企业资源计划(ERP)是制造业实现计算机集成制造系统的重要技术支撑,现有的系统集成主要基于工作流和产品物料清单(BOM)。前者受工作流节点的限制无法实现数据的实时更新,后者仅集成产品结构数据,无法满足基于多样化顾客需求的变型设计模式。基于通用物料清单(GBOM)创建包含产品配置信息的完整产品结构,通过建立产品零部件(Item)和GBOM的中间文件完成PDM和ERP系统间的数据交换,实现系统集成。GBOM中的配置信息传递到ERP端,生产人员可根据顾客需求在ERP端进行产品配置,缩短产品的市场反应时间。集成方法在RMM3塑料外壳式断路器中的应用证明了方法的有效性。     

基于IRP的企业信息化工程整体解决方案的设计

为解决当前企业信息化建设中"信息资源整合与共享问题",提出了一种基于IRP的企业信息化工程整体解决方案.介绍了信息资源规划的相关知识,分析了IRP与ERP之间的区别,采用信息资源规划方法,提出了一整套由"方法论 标准规范 支持工具"组成的技术体系解决方案,从而减少企业内部信息交流和沟通的中间环节,加快部门信息传递速度,提高了企业内部计算机应用水平,促进了企业现代化管理水平的提高,增强了企业的市场竞争能力.     

基于IRP的企业信息化工程整体解决方案的设计

为解决当前企业信息化建设中“信息资源整合与共享问题”,提出了一种基于IRP的企业信息化工程整体解决方案。介绍了信息资源规划的相关知识,分析了IRP与ERP之间的区别,采用信息资源规划方法,提出了一整套由“方法论＋标准规范＋支持工具”组成的技术体系解决方案,从而减少企业内部信息交流和沟通的中间环节,加快部门信息传递速度,提高了企业内部计算机应用水平,促进了企业现代化管理水平的提高,增强了企业的市场竞争能力。     

企业RFID模块应用研究与实现

物联网在全球发展迅速,而射频识别技术是物联网感知层的核心技术之一.RFID作为一项新兴的自动识别技术,已广泛应用于生产制造和装配、图书管理、身份标示、运动计时、智能交通、门禁系统、航空行李处理、文档追踪、物流与供应链管理等众多领域中.显然RFID技术将会被越来越多的企业采纳,而在原有系统中扩展出RFID功能亦或是构建全新的RFID系统,将会是一个比较漫长的过程,降缓了一些企业信息化建设的步伐.RFID的发卡和读取,将会是每一个未来信息化系统所必须实现的功能,针对RFID基本概念进行了分析,以在J2EE系统中扩展出RFID模块为例,详细论述了RFID模块解决方案的设计流程,并给出了相应代码实现.     

Complex scheduling of a printing process

The intricate nature of scheduling at a printing company is described. Many of its subtle operational complexities and sophisticated work order selection rules are explained in depth to emphasize the highly refined nature of a strongly sequence-dependent process. A simulation-based scheduling tool integrated with an enterprise resource planning (ERP) system is used to capture the required level of process detail. The results are comprehensive schedules that reflect the collective needs of the entire production process, improved understanding of interdepartmental effects, increased productivity, better visibility of future production requirements, and faster schedule turn around times.     

基于CORBA的档案管理系统

简述了油田档案管理系统的特点和功能，探讨了CORBA标准，提出了基于CORBA的档案管理系统框架，并对系统的关键技术进行讨论，设计和实现了基于CORBA的油田档案管理系统，使档案管理融入油田企业的ERP中。