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AB Cremers, S Alda & U Radetzki

Towards Semantic Grid in Construction Informatics

Abstract: Civil Engineering increasingly requires efficient Virtual Organizations of heterogeneous partners and facilities. Mainly four software architecture paradigms originating from the area of distributed computing have influenced the implementation of supporting software systems for Virtual Organizations: Grid, Peer-to-Peer, Agent as well as Web Service architectures. Each architecture paradigm accounts for different technical aspects that promote the realization of such software systems. The unification of these paradigms towards an integrated architecture has, to date, not been achieved. This keynote paper summarizes the state-of-the-art architecture paradigms and proposes elementary design issues for an integrating architecture. This architecture incorporates ontologies for regulating the communication and interoperability among different services. An application scenario finally demonstrates the usage of such an architecture.

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Full text: content.pdf (501,846 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.


Ge X J, Lam K C, Cheung S O

Virtual soil laboratory: an exemplar of e-learning in construction

Abstract: Web-based teaching and learning have become increasingly popular, both for institutional and personal lifelong learning. Learning through the web enables students to structure their pace of study. In addition, the demand on resources such as educators? time and space can be reduced. The objective of the paper is to describe learning theory and how people learn through a constructivist approach. The paper also describes the development of a web based virtual soil laboratory and its realization, followed by highlighting the benefits of the system. It is concluded that the virtual laboratory is a supportive teaching aid and students have benefit from "learn how to learn" through constructivist approach of learning.

Keywords: virtual soil laboratory, constructivist approach, simulation, web-based teaching and learning

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Full text: content.pdf (495,699 bytes) (available to registered users only)

Series: itaec:2004 (browse)
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Gustav Jansson, Helena Johnsson

CONCURRENT ENGINEERING IN EDUCATIONAL PROJECTS: CASE STUDY SVARTO_BERGET

Abstract: Each year, Lulea_ University of Technology teach 40 civil engineering students and 45 architectural engineering students basic knowledge in the construction process through a simulated real-life situation. In the third year, the grand total of 85 students is brought together and taught their respective professional roles through acting as experts within 6 different fields in the realization of a residential area. Research in the last decades has identified concurrent engineering as a possible method for streamlining the design phase in the construction process. The student project was therefore planned with a concurrent engineering approach, where all student groups start their work at the same time. The pedagogy was to teach students a new approach to working in large projects, with the side effect of testing if concurrent engineering is feasible also in educational projects.Information is shared between groups through live documents on a project portal. Project coordination and communication is handled by 21 project leaders who meet regularly to exchange information between groups and detect missing information needed from other groups. Project planning is made through a method adopted from lean construction; Look Ahead Planning, which is part of the Last Planner method. IT-support is used to produce data and perform calculations but also as a tool for quality assurance across groups. All data is eventually summed up and presented in a virtual reality model of the new residential area. The VR model is gradually refined and the structure for delivering information into the model is drawn up by 6 appointed IT coordinators.

Keywords: concurrent engineering, construction process, under-graduate education, last planner method

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Full text: content.pdf (558,359 bytes) (available to registered users only)

Series: w78:2008 (browse)
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Jaggar D M

Expert system technology in construction management

Abstract: This paper describes the development of a micro computer aid driven by a suite of programs which allow the design identified solution for a given building project to be transposed into information reflecting the construction solution. The 'modus operandi' of the computer aid is the use of an Expert System which can access and manipulate data contained in a data base and to submit back to a data base, for subsequent user retrieval, information about the particular building project under consideration at various stages during its realization. The system is initiated by the creation of a design situation model which is held in a relational data base in the form of information concerning the descriptions and quantities of the finished work required to achieve the building project. The Expert System, through the logic contained in the inference engine, organises the design stated situation model describing the construction solution in terms of construction activities, the resources needed and their cost implications. Thus the system is intended to provide an interface between the product related design solution and the process related construction solution and has the aim of aiding the following: 1. Resource and financial management by design team 2. Resource and financial management by the construction team

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Full text: content.pdf (2,480,147 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.058494) class.analysis (0.032486) class.man-software (0.018331)
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Permission to reproduce these documents has been graciously provided by the Lund University and the Swedish Building Centre. The assistance of the editors, Prof. Per Christiansson and Prof. Henry Karlsson, is gratefully appreciated.


Karlsson H

Classification and coding, a necessary tool for the improving the information flow in the building process. Developments in Sweden and within CIB w4

Abstract: During the 20 minutes I have got at my disposal I will describe how we in Sweden today regard the need for tools for an improved information flow in the building process and how we try to solve our problems, I will also touch upon the relation of this work to international development work. The name of this session is ' Classification ' . We have got some critisism for that as it hints at a more restricted subject than really intended. The aim of the work described during the session is to improve the information flow in the building process. Classification and coding are important tools for the realization of that goal but only tools , not ends . The title 'Classification ' was chosen for brevity . Improving the information flow is something very practical and the consequences may even be described in dollars or pounds or whatever currency you choose. Also the way we try t o achieve our goals is down t o earth. You must during the whole development work have a close relation to the users of our results .

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Full text: content.pdf (2,530,117 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.social (0.023430) class.impact (0.022812) class.retrieve (0.015304)
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Permission to reproduce these documents has been graciously provided by the Lund University and the Swedish Building Centre. The assistance of the editors, Prof. Per Christiansson and Prof. Henry Karlsson, is gratefully appreciated.


L L olde Scholtenhuis, T Hartmann

Changing Scheduling Purposes and Evolving 4D-CAD Models: A Study of Planning and Realization in a Utility Project

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Full text: content.pdf (32,110 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Mittrup I, Smarsly K, Hartmann D, Bettzieche V

An agent-based approach to dam monitoring

Abstract: Software agents - autonomous, mobile and intelligent software programs - provide all the necessary characteristics to innovate and accelerate the development of distributed applications. They represent powerful and robust software technology for implementing distributed collaborative work flows and complex interaction. Applying software agents, the Institute of Computational Engineering, in cooperation with the Ruhrverband (Ruhr River Association) is taking an innovative approach to develop a modern dam monitoring system, which is capable of supporting the collaborative work of experts involved in monitoring. While the conventional computer-based monitoring systems consider the remote monitoring, the presentation and the electronic transfer of measured data, the present agent-based approach is focusing the distributed work flow of data analysis and safety assessment. Consequently, the complete work flow of dam monitoring is mapped onto a multi-agent system: regularly performed tasks (e.g. measuring at the dam) are carried out by task-oriented agents. In addition, the involved human experts are assisted by personal agents, which allow a direct communication with the multiagent system and provide access to specific tasks. Associated with the known advantages of the agent technology, such as robustness and mobility, the introduced concept is a significant enhancement compared to conventional monitoring applications. The present paper gives a short introduction to dam monitoring, outlines the selected design of the agent-based dam monitoring system and provides an insight into the current implementation. It is to be pointed out that the realization is still incomplete and a matter of research.

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Full text: content.pdf (362,274 bytes) (available to registered users only)

Series: w78:2003 (browse)
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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.


Qi Zhong, Mathur K S, Kwok Wai Tham

A construction process model by using designddef

Abstract: There are a few ways to model the construction process, which is an essential step when it comes to Computer-Integrated-Construction (CIC). IDEFO together with NIAM, IDEFlX and EXPRESS or EXPRESS-G, the graphical presentation techniques used within IS0 10303 (IS0 TC184/SC4/WG PMA Part l), are the basic and popular modelling tools and languages in both manufacturing and construction projects. This paper presents a model which is an attempt to combine many aspects of the construction process description into a single comprehensive picture using IDEFO representation. Based on the analysis of information generated in a construction project life span, including classification, evolution and exchange of information, first an information classification system is established, in which information for a construction project can be classified as project-dependent-information, project - independent-information, standards and codes, etc.. Second, a construction process business model is set up using the IDEFO modelling technology. Software Design/IDEF version 2.5 is used for the realization of the graphics. At last an IDEFlX conceptual model is presented to illustrate the relationship between the entities of this construction process model.

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Full text: content.pdf (1,353,886 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.067633) class.commerce (0.013372) class.synthesis (0.012902)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Warszawski A, Sacks R

The project model of an automated building system

Abstract: The aim of an Automated, Computer Integrated Building Realization System is to automatically generate all of the information required for the design, planning and execution of a building project. A central computer project data base forms the core of the System. The project data includes all the relevant information about the facility and the resources required through the various realization stages. Program modules function collectively to advance the project through each stage. The model presented is designed to facilitate both change through the project life-cycle and the use of functional and technical solution libraries. We describe various considerations in the design of the model and parametric assembly based solutions.

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Full text: content.pdf (1,356,014 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.057097) class.synthesis (0.029612) class.software-software (0.009467)
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Permission to reproduce these papers has been graciously provided by the Stanford University, USA. The support of the editors, particularly Prof. Fischer is gratefully appreciated.


X Z Zhao, R H Wang, K Shea

The Computational Generation and Realization of Spatial Truss Structures

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Full text: content.pdf (231,687 bytes) (available to registered users only)

Series: w78:2014 (browse)
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