摘要:

Abstract:A prototype knowledge‐based diagnostic system for understanding the problems in prestressed concrete bridges is presented. The object‐oriented approach is used for the system development. The system is completely interactive, making extensive use of pictures and diagrams along with textual explanation to explain difficult concepts in a multilingual environment. The system compares the new case of damage with the various types of damages that are stored in the knowledge base. It explains to the user the details of design and construction that may lead to this damage and the related repair methods. The system indicates the applicability of textual and pictorial explanations in developing an environment for the diagnosis of problems in prestressed concrete brid

ISSN:1093-9687    

DOI:10.1111/j.1467-8667.1994.tb00345.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Abstract:This paper reports on an object‐oriented building procurement model being developed at the University of Salford as part of an integrated database for the construction industry (ICON). The model is based on a top‐down approach using the information engineering method (IEM), object‐oriented method (OOM), and an object‐oriented CASE (computer‐aided software/system engineering) tool. This paper illustrates the way the information requirements of the building procurement process are identified and stored as graphic representations using activity, object, and process models. Ultimately, code is generated from these graphic representations, and a physical object‐oriented database (OODB) for the building procurement process is established.The object‐oriented approach to information modeling will be described in detail with an illustration of how the use of a CASE tool can help the analysis phase. Various features of the object‐oriented paradigm will be described within the building procurement context. In addition, examples will be given to help the reader understand the recent developments in the object‐oriented field. Finally, the different modeling techniques used within the object‐oriented method such as object and event schemas will be pre

ISSN:1093-9687    

DOI:10.1111/j.1467-8667.1994.tb00346.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Abstract:This paper reports on the conceptual modeling of design information that is being undertaken to provide a framework into which information from different disciplines within the construction industry will fit. The information modeling, which is being undertaken using object‐oriented analysis and design techniques, will allow information to be viewed from different perspectives and different levels of abstraction depending on the requirements of the particular user. To permit sharing of the information, it is necessary to have fully integrated models. This paper describes the models that were produced and the way in which integration was achieved in order not to force any participant to compromise in terms of viewing information from an unfamiliar perspectiv

ISSN:1093-9687    

DOI:10.1111/j.1467-8667.1994.tb00347.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Abstract:This paper describes a modeling approach for construction operations that uses a Form metaphor rather than the familiar network‐based icons. The objective is to facilitate the construction of simulation models by nonprogrammers. This paper discusses object orientation in modeling and how the technology may be used to help the user (a nonprogrammer) by facilitating the modeling process and to translate the object‐based model into a simulation program. The simulation model development is facilitated by the creation of company‐wide “construction operation libraries” limiting model development to the specification of resource interactions. An example demonstrating the application of this approach to a complex construction project and a comparison with CYCLONE are

ISSN:1093-9687    

DOI:10.1111/j.1467-8667.1994.tb00348.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Abstract:For many engineering and construction firms, the majority of a project's total cost is often incurred in the construction phase. In order to address the productivity and profitability of construction projects, one has to consider a variety of factors. This paper presents new techniques that RUST International has employed to address construction cost reduction. It focuses on using the intelligence built into the three‐dimensional (3‐D) computer‐aided design (CAD) plant model during design and applying it to construction project management at the job site. The Jacobus Technology JSpace system is used for modeling and interacting with the large and complex 3‐D plant model. Applications developed by RUST on the JSpace platform, which provide for construction planning, material control, and support of plant startup, will be introduced. The analysis shows that use of the 3‐D CAD model on the job site can provide substantial reductions in work hours and office costs, provide marked reductions in craft labor costs, and help reduce bulk material surplus as well as shorten project schedules. The system is shown to be an effective communication tool in bringing engineers, contractors, and owners together by using advanced 3‐D animation o

ISSN:1093-9687    

DOI:10.1111/j.1467-8667.1994.tb00349.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY