Welcome
Digital library of construction informatics
and information technology in civil engineering and construction
 

Works 

Search Results

Facilitated by the SciX project

Hits 1 to 10 of 15

Ammar Al-Bazi

ENTERPRISE SIMULATION OF THE PRECAST CONCRETE MANUFACTURING INDUSTRY

Abstract: The lack of applied innovative tools, for improving the performance of the precast concrete products manufacturing industry, has led the researchers in this paper to develop an Enterprise Simulation Precast Concrete (ESPC) model, to improve the performance of the precast industry. As an initial stage, a detailed layout for the precast concrete production processes is developed in order to understand the relationships amongst the manufacturing processes in such industry. In addition, simulation methodology is developed to analyse the precast manufacturing system and identify the resource bottlenecks. Heuristic searching rule is developed in order to simulate the accommodation process of the produced items in a temporary stockyard area.The results indicated low utilisation of the used resources due to using only one curing area for storage and retrieval processes.

Keywords: Precast concrete products, enterprise simulation model, discrete event simulation modelling, manhole manufacturing system, heuristic searching rule

DOI:

Full text: content.pdf (1,004,348 bytes) (available to registered users only)

Series: w78:2008 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Bakis N, Sun M

Intelligent broker for collaborative search and retrieval of construction information on the WWW

Abstract: "CONTEXT In recent years, the construction industry began to use the World Wide Web (WWW) as an information dissemination vehicle. The amount of construction information available on the WWW is increasing exponentially, ranging from product data to technical publications, from building regulations to best practice guides. However, the task of finding the right information becomes more and more difficult. At present, users rely on two types of solutions to the information discovery and retrieval problem on the Internet, “yellow pages like information gateways” and “robot-based Internet search engines”. While acknowledging the success for both solutions so far, the authors will discuss their growing evident limitations in supporting construction specific information retrieval on the WWW. OBJECTIVES AND METHODOLOGY The aim of this study is to develop an intelligent information broker for the construction information on the Internet, which will facilitate collaboration between users for the benefit of improved information search and retrieval on the WWW network. The objectives are: ·to examine the information needs of different types of users in the construction industry; ·to capture these information needs conceptually as user profiles and information context models; ·to incorporate construction domain knowledge into the information network; ·to improve speed and accuracy of users search for construction information by developing a information network that facilitates the sharing of search results and knowledge; ·to develop a hierarchical distributed client/server architecture to enable the most efficient service both Intranet and Internet users. RESULTS AND CONCLUSIONS The intelligent information broker described in paper has a client/server architecture based on software agents technology. It has two distinct features: (1) supporting user collaboration; (2) applying construction domain and user profile knowledge to improve the information search. Collaborative Information Searching Collaborative searching or social filtering is often the most effective method of ranking Internet documents. The developed information broker enables users with the same interest to share the results of their search and their rating of each document’s quality and relevance. Construction knowledge and User Profile The information broker server is in essence a construction oriented WWW searching engine. What distinguishes it from other searching engines is its evolving knowledge base of construction specific keyword sets and construction user profiles. Using the knowledge base, the information broker server is able to answer intelligent queries other than simple keyword matching."

Keywords:

DOI:

Full text: content.pdf (197,260 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.054837) class.retrieve (0.047943) class.social (0.030880)
Similar papers:
Sound: read aloud.

Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Delic D

Design of structural elements by use of expert networks

Abstract: Shown are three nets. As the first, shown is an example of evaluating a classic rule based expert system to an expert network by replacing one of its knowledge base searching module with a neural network. The second net is used to describe a behavior model of compound steekoncrete columns. Following the design procedure of the DIN 18800 part two, and using just a selected part of data tables for columns design presented as the input data for neural network , the author succeed to organize the design process by neural network only. The rules in the expert system are used for design flow controlling. The third net is not an expert network. It is a neural network combined with PASCAL codes, but should be embedded into an expert system. The work is dealing with problems of variably Input energy control into structural systems (smart bridges) depending on the monitored generated incoming (traffic) loading.

Keywords:

DOI:

Full text: content.pdf ( bytes) (available to registered users only)

Series: ecce:1997 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Harrison D, Donn M, Skates H

Applying web services within the AEC industry: enabling semantic searching and information exchange through the digital linking of the knowledge base

Abstract: The Architecture, Engineering and Construction (AEC) industry is fragmented by professions separated by skill, stigma and distance. This fragmentation has created a dispersed knowledge base with knowledge gaps occurring within and between the professions. These knowledge gaps can only be overcome through the exchange of information and past experiences. Presently this exchange is reliant on manual communication, which has proven inefficient and open to misinterpretation. Web Services have been developed within the Information Technology industry to allow the crossplatform exchange of complex data. The application of this technology within the fragmented AEC industry holds significant potential. Research at the School of Architecture, Victoria University is exploring the integration of Web Services within existing databases to enable the searching, exchange and flexible presentation of relevant AEC information. Following industry feedback the aecBEDRock concept has been proposed which would enable the digital exchange and searching of valuable AEC data between professionals. The aecBEDRock concept utilizes the properties of Web Services and Industry Foundation Classes to create a digital AEC information framework that could bind the knowledge base of the industry. A stronger knowledge base would increase quality levels within the construction process through increased professional awareness and efficiency

Keywords:

DOI:

Full text: content.pdf (205,243 bytes) (available to registered users only)

Series: w78:2003 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.

Permission to reproduce these papers has been graciously provided by the University of Auckland. The assistance of the editor who provided the full texts and the structured metadata, Dr. Robert Amor, is gratefully appreciated.


Howard R

Classification of building information – European and IT systems

Abstract: Introduction Organisation of the information needed to design, construct and manage a building is still based upon traditional trades and classification tables. European countries have established sources of information: specifications, element tables and product databases, based on categories, such as SfB, defined 50 years ago. The Danish Centrecontract on Building Classification is following projects in several other countries, to update its systems, provide greater integration of data, and keep up with new information technologies. This paper presents experience from studying developments in several countries, relating them to the needs of Denmark, and anticipating the future demands of IT. IT context The possibilities with IT for more flexible searches on advanced representations of building entities require fundamental changes in integrating, exchanging and accessing information. There is a proliferation of web portals and project webs, and some common structure that relates to international practice is needed. Methods of searching are changing from traditional categories to full text and structured keywords. New methods of representing building data such as the IFCs and XML are having a major influence alongside standards for building data. The Centrecontract is relating these to the current practice in many types of firm in the Danish building industry. Objectives The Centrecontract is due for completion in 2002 but the research being carried out by DTU will be presented at the end of 2000 and 2001. The broad objectives are for the partners to develop tools for building elements, schedules of rates and product classification, within a common framework, and to promote these and provide education. The research has defined the needs of Danish industry, is learning from experience in other countries, and will predict the likely influence of IT developments in future. This paper reports on some of the information systems being developed in other countries. Methodology The approach taken was to talk to experts rather than to collect new statistical information. In each country at least one developer of new information systems was interviewed, one researcher and one user organisation. They were asked about the systems currently used in their country, new systems being developed, and any experience of their use. They were also asked about how changes had been, or could be, made in the general organisation of information about building. Relevant standards and the many building information services on the Web were also studied to find the common elements, and see how Denmark could develop systems to suit local needs. Some preliminary findings Factors from Denmark include the need to link to the familiar SfB system, using the same structure right through the process, the importance of the client and resistance to standards. Other countries studied so far are developing improved systems, with Sweden leading the way with BSAB 96, the UK with Uniclass to unite its different classification systems, and Holland and Norway proposing Lexicon and BARBI respectively. Common factors are the list of tables defined in ISO 12006-2, the work of EPIC in product classification, the influence of the IFCs and the use of the Web and XML. This work will be completed at the end of 2000 and recommendations made to the other partners in the Centrecontract for the systems that will help meet the needs of the Danish building industry.

Keywords:

DOI:

Full text: content.pdf (872,669 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.collaboration (0.092484) class.represent (0.059640) class.standards (0.053428)
Similar papers:
Sound: read aloud.

Permission to reproduce these documents have been graciously provided by CSIR Building and Construction Technology. The assistance of the editors, Mr. Gustav Coetzee and Mr. Frances Boshoff, is gratefully appreciated.


Ivan Mutis, Jose Solis

FLOORBOOK: A Social Network System to Enable Effective Interfacing of Project Actors

Abstract: Construction project participants constitute a complex social human network composed of a heterogeneous and fragmented set of stakeholders. The disjoint group of actors that team to work on a project constitutes collective entities, social networks at different scales in time and space. The proposed social network system is a semantic resource that leverages the communication and coordination of exchanging and sharing information. It is expected that it will enable an improvement in efficiency of the interfacing of actors and information. This semantic resource helps actors to minimize human intervention for coordination and information searching and retrieval, which are activities that demand costly resources and the use of specialized labor. Floorbook analyzes the vocabulary of the annotations on the forms of representation used in construction documentation, categorizes and models communities according to the user’s role in the shared form of representation, and makes suggestions to the users to optimize their particular world view, so that the suggested annotation is more precise and personalized. The basic rational of the approach is that the position of the users in a social network impacts their use in the system, and that the content of the annotations are part of a categorization model of a specific domain. The proposed social network system works as an effort of collective intelligence that enables the sharing of the semantics of the tags that are associated with the representations. As an effort of collective intelligence, Floorbook (1) models and extracts semantics from informal communication; (2) categorizes and models communities defined by common interests; and (3) self-learns from the history of user actions in the system to enable new value-added services, such as, for example, suggesting new candidate semantic tags as a result of the analysis of the representations to optimize the particular world view of an individual user.

Keywords: social-networking, communication, collaboration, emerging semantics

DOI:

Full text: content.pdf (238,264 bytes) (available to registered users only)

Series: w78:2010 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


J Zhang, A Akanmu

Intelligent Construction Case Study Illustration System Using Natural Language Processing and Image Searching

Abstract:

Keywords:

DOI:

Full text: content.pdf (535,274 bytes) (available to registered users only)

Series: w78:2016 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kazakeviciute G,

The computer aided modelling and energy analysis of the spatial andstructural components of building

Abstract: The article concerns the modelling and energy analysis problem of the spatial and structuralsolutions of newly designed buildings or those under renovation. The results of that task serve as abase for defining of thermal indices of the project on different design stages.The core of the developed automated system is formed of integrated graphical digital spatial modelsof the parts of buildings. These models include different kind of structured geometric and nongeometric(physical, economical) information about the object.The proposed method could be used by interested experts as a tool for control of thermal and energyindices at various design stages, searching for rational architectural forms and structural solutions. Ittakes into account the latest requirements of Lithuanian building regulations concerning heatingenergy saving.

Keywords: Computer aided design, buildings, 3D models, energy analysis.

DOI:

Full text: content.pdf (186,048 bytes) (available to registered users only)

Series: ecce:2001 (browse)
Cluster:
Class:
Similar papers:
Sound: read aloud.


Morris P W G, Elhag T M S, Deason P, Milburn R, Bloomfield D

IT support for knowledge management in designer and contractor briefing

Abstract: This paper describes the activities and findings of an EPSRC project examining the role of IT in Knowledge Management and Organisational Learning in Construction - KLICON. The research, which is nearing completion, has explored the use of IT in supporting knowledge management in construction briefing, both for designer briefing in unstructured situations, and in contractor briefing in design-build bidding situations. Specifically it examined, from first principles, the choice of appropriate knowledge transfer mechanisms and the challenge of searching for knowledge without a well-formulated ontology. Though the research findings are still preliminary the indications are that: 1 structured knowledge areas benefit from more formal structuring of knowledge space and content (lessons, data, contacts, etc.) while, conversely, less structured areas benefit from free search capabilities; 2 ontology may not be the challenge that it has seemed in the past; 3 many users still find IT support unattractive. All these represent areas of important further research.

Keywords:

DOI:

Full text: content.pdf (371,274 bytes) (available to registered users only)

Series: itaec:2003 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Sameh Shaaban; John McKechnie; Stephen Lockley

MODELLING INFORMATION SEEKING BEHAVIOUR OF AEC PROFESSIONALS ON ONLINE TECHNICAL INFORMATION RESOURCES

Abstract: With the increasing popularity of architectural, engineering and construction (AEC) online information resources, studies have emphasized the need for domain specific systems that acknowledge both the user’s information tasks and skills. This study concentrates on analysing the users’ information behaviour when involved in an online information seeking session. This analysis aims to find out whether there are patterns of information seeking behaviour among the AEC professionals. The study is based on a live web-based information access system, which contains a large collection of technical AEC documents. Web transaction logs, of around 200,000 user sessions, were gathered and statistically examined. Cluster analysis methods have been performed in order to find the optimal natural groupings of information seeking behaviours among the system users. Results shows the popularity of the ‘exploring results’ and ‘simple searching’ activities among all users. Common usages of short queries have also been noted. Four clusters of user seeking behaviour have been found. The statistical characteristics of each cluster as well as the authors’ interpretations of their common usage patterns have been discussed.

Keywords: Usability, usage patterns, user analysis, information seeking behaviour

DOI:

Full text: http://www.itcon.org/data/papers/att/2003_20.fullText.03818.pdf (available to registered users only)

Series: other (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


For more results click below:

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
this is page 1 show page 2 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003