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A decision support system for building refurbishment design

Abstract: "Refurbishment work in the EC currently accounts for more than one-third of the total construction output. This market is expected to grow stronger with the progressive ageing of buildings and the environment impetus to retain buildings. A further dimension is the need to adapt buildings for a greying population. There are important differences between refurbishment and new construction works. The existing building constraints the design solutions, construction technologies and work methods. Mechanisation, planning, and efficient organisation of refurbishment work is difficult, due to the small, labour intensive, and ad hoc, dynamic nature of the work. Also due to the relatively small scale of refurbishment projects, there have been no opportunities for standardisation and the applications of prefabrication and industrialisation are limited. Today, larger sized contractors are rapidly moving into the refurbishment market, in response to the shrinking new-build market and the higher technological demands of large scale refurbishment projects. The EC funded Brite Euram project 4670 is titled ĎDecision Support Systems for Building Refurbishment.í This project has started in August 1998 and will finish in July 2001. Its objective is to develop a socio-technological-commercial framework and corresponding Decision Support Systems (DSSs) for housing refurbishment, to achieve: ? refurbishments which are more focused on user requirements; ? refurbishment designs which take into account the constraints of the existing building structure; ? increased incorporation of industrialised systems and components; ? organisational procedures and production technologies that recognise the unique nature of refurbishment work. The project is divided into three tasks. Task one aims at developing a DSS for the determination of the refurbishment demand and ballpark costs. Task two involves the development of a DSS for refurbishment design. Task three will result in a DSS for refurbishment process planning and control. This paper describes the approach followed for the ongoing development in task two, the DSS for refurbishment design. The main objectives of this task are to provide decision support at the project level. It will develop a database of layouts of representative existing housing estates and a database of preferred refurbishment layouts for these representative existing housing estates. Another database will be developed containing information on building systems and components that are relevant for the refurbishment process. Task two will establish a protocol for refurbishment design support. This protocol, which is implemented in a decision support information system, involves a number of steps that aid the user in selecting an appropriate housing layout and building systems and components that meet the userís requirements. These steps involve the evaluation of a the userís refurbishment demands and selection of a matching representative existing housing layout. Based on further dialog with the system, a preferred refurbishment layout is selected, which in turn is used as the basis for the selection of building systems and components that meet the performance requirements as stated by the user. The paper describes the methodology that is implemented in the system for retrieving performance requirements from the user, and the approaches for matching these to the stock of existing and preferred housing layouts available in the systemís database. The system is characterised by a flexible architecture of both the databases and the user interface, which results in a scalable system that allows the expansion of the databases with new graphical layouts and building systems and components, as well as the addition of new kinds of performance requirements. The system is implemented as an Internet application, which allows the database to be maintained centrally and facilitates world wide access to the system. The systemís implementation involves the combination of graphical and non-graphical data that can be queried and matched with only typical Internet browsing software installed at the client-side."

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Full text: content.pdf (465,782 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.029035) class.environment (0.012122) class.impact (0.010657)
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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


B KsiÍŅopolski & Z Kotulski

On scalable security model for sensor networks protocols

Abstract: Distributed sensor networks meet many different barriers that reduce their efficient applicability. One of them is requirement of assurance of the information security when it is transmitted, transformed, and stored in the electronic service. It is possible to provide an appropriate level of security applying the present-day information technology. However, the level of the protection of information applied to the whole network is often much higher than it is necessary to meet potential threats. Since the level of security strongly affects the performance of whole system, the excessive protection decreases the system's reliability and availability and, as a result, the global security of the construction. In this paper we present a model of scalable security for digital information transmission systems for the sensor network. In our model the basic element is the risk management procedure leading to an adequate protection level.

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Full text: content.pdf (347,535 bytes) (available to registered users only)

Series: w78:2005 (browse)
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Permission to reproduce these papers has been graciously provided by the Technische Universitšt Dresden.


G Kapogiannis, F Khosrowshahi, J Underwood

Digital Services for Construction Small and Medium Enterprises: A Conceptual Business Model

Abstract: The rapid deployment of web technologies delivers information from diverse sources in the world of digital business in a unified way. Within the construction industry the demand for investments in the digital dimension has raised very fast indicating a trend towards on-line collaboration services usually offered through a web portal. The main purpose of this research is to examine how the use of a web portal enhances the mission of construction Small Medium Enterprises (SME) in the local, national and international economy. Therefore, features and services captured from existing construction web portals are listed quantitatively to indicate those that are important to support the enterprise needs of construction managers and directors. Additionally the common practical and essential features considered in the technical and contextual design of a web portal geared for the use within the domain of construction SMEs in order to promote enterprise continuity in digital business are briefly presented. Results indicate potential support of interaction and collaboration among partners in the construction industry due to direct information accessibility as well as an attractive web platform developed based upon their daily needs. Therefore the need to develop a web business model is suggested to enhance the role of construction SMEs with a focus on online collaboration (online services). This model aspires to provide potential practical on-line dissemination of knowledge within construction SMEs to help the world of construction managers and directors in order for them to be more efficient, effective and creative when developing new businesses, new ideas and new projects. This model is partitioned to accommodate for flexible and scalable technological infrastructures that offer the necessary web services addressed to construction SMEs.

Keywords: Construction SME, Web Portal Technologies, Web Services, Virtual Organisation, Communication

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Full text: content.pdf (330,893 bytes) (available to registered users only)

Series: w78:2011 (browse)
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J Beetz

A Scalable Network of Concept Libraries Using Distributed Graph Databases

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Full text: content.pdf (118,766 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Kang T-W,Hong C-H

The architecture development for the interoperability between BIM and GIS

Abstract: The purpose of this study is to propose a scalable architecture that can be supported via the BIM (Building Information Modeling) on a GIS (Geographic Information System) platform for information interoperability between various heterogeneous systems such as BIM, GIS, and FM (Facility Management). This platform requires the acquisition of information from various data sources such as IFC (Industry Foundation Classes) and DBMS (Database Management System) if a use case for facility management, energy management, and design evaluation needs to be implemented, followed by a transformation of the information into appropriate information that can represent the perspective suitable for the use case. IFC may be considered a method for information interoperability, but it has a limitation in representing information in the perspectives of the use cases. Unlike the support of information interoperability based on the existing IFC, we would like to approach the problem of GIS- and BIM-based information interoperability by separating the problem in terms of geometry and property information. The geometry information is transformed into a simplified surface model from the IFC geometry information for that visualization of a number of objects represented in the GIS. The information required for the use case perspective is extracted and transformed from the property information by utilizing ETL (Extraction, Transform, and Load). ETL is a technology that extracts, transforms, and loads information from a variety of data sources and has been used for OLAP (Online Analytical Processing) function implementation via data mining in the management engineering arena to represent perspective-oriented information. In this study, we have applied ETL from the perspective of BIM. For this purpose, we have reviewed the related study trends and derived a general use case of BIM on a GIS platform. Further, component architecture is designed to implement the use case as well as a Star Schema to represent information according to the perspective for the development of a data warehouse. On the basis of these, BGP architecture is proposed for implementing the ETL concept using BIM on a GIS platform. Furthermore, a use case for the facility management of Korea Institute of Construction Technology is implemented as a prototype to show the usefulness of the proposed architecture. Thus, in this study, we demonstrate that information required from the perspective of project stakeholders can be interoperated effectively.

Keywords: BIM,GIS,integration,interoperability,perspective representation,ETL

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Full text: content.pdf (1,258,935 bytes) (available to registered users only)

Series: convr:2013 (browse)
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O'Brien W J, Issa R R A., Hammer J, Schmalz M S, Geunes J, Bai S X

SEEK: Accomplishing enterprise information integration across heterogeneous sources

Abstract: This paper describes ongoing research on the Scalable Extraction of Enterprise Knowledge (SEEK) project. The SEEK toolkit is a collection of modular components. The components enable rapid instantiation of connections to firms' legacy information sources, (semi)-automatically integrating knowledge in the firm with knowledge needed as input to decision support tools. SEEK is not a general-purpose toolkit. Rather, it allows extraction of knowledge required by specific types of decision support applications. Thus SEEK enables scalable implementation of computerized decision and negotiation support across a network of firms. Current development is directed towards support for construction supply chain applications. SEEK represents a departure from research and development in shared data standards. Instead, SEEK embraces heterogeneity in firms' information systems, providing the ability to extract and compose knowledge resident in sources that vary in the way data is represented and how it can be queried and accessed. This paper outlines the business needs for such capabilities, the SEEK information architecture, and reviews the underlying technologies (principally, Data Reverse Engineering) supporting SEEK.

Keywords: legacy system integration, knowledge capture, knowledge composition, data reverse engineering, supply chain management, process models

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Full text: http://www.itcon.org/2002/7 (available to registered users only)

Series: itcon:2002 (browse)
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R.R. Senescu & J.R. Haymaker

Specifications for a Social and Technical Environment for Improving Design Process Communication

Abstract: The architecture, engineering, and construction (AEC) industry can generate tremendous value by improving design processes. Observed case studies and design literature suggest that processes can improve through collaboration, sharing and understanding (defined here as Design Process Communication). Industry has not widely adopted process communication techniques, though other research fields provide points of departure for promoting better communication. Organization Science studies how institutions exchange information and knowledge. Human Computer Interaction, informed by Cognitive Science, explains how computers can aid and supplement humanís ability to find and manage information. Process Modeling research shows how to best represent design processes. The paper links this research to develop a specification for a social and technological environment - a Design Process Communication Methodology. The environment is computable, distributed, embedded, modular, personalized, scalable, shared, social, transparent, and usable. The Methodology lays the foundation for improving building design process efficiency and effectiveness from concept to construction documentation.

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Full text: content.pdf (525,585 bytes) (available to registered users only)

Series: w78:2009 (browse)
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Raimar J. Scherer and Gerald Faschingbauer

A Scalable Open Monitoring Platform Environment For Risk Management

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Full text: content.pdf (1,542,193 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Renate Fruchter, Marisa Ponti, Andrea Jungbecker, Hans Wilhelm Alfen

A scalable working model for cross-disciplinary global teamwork education

Abstract: Our mission is to prepare the next generation of architecture, engineering, construction (AEC) profes-sionals who know how to team up with professionals from other disciplines and leverage the advantages of innovative collaboration technologies (ICT) to produce higher quality products, faster, more economical, and environmentally friendly. To achieve this mission we have been offering the AEC Global Teamwork course established at Stanford in 1993 in collaboration with universities worldwide. The AEC Global Teamwork course was described in many previous papers. This paper examines this course as a scalable working model for cross-disciplinary global teamwork education. More specifically we discuss the following dimensions: (1) a growing global learning network, (2) expanding the cross-disciplinary engagement, (3) evolving ICT EcoSystem, and (4) increasing number of social worlds students distribute their attention.

Keywords: project based learning, global teamwork, ICT, social world

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Full text: content.pdf (499,540 bytes) (available to registered users only)

Series: w78:2007 (browse)
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