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Dennis Peeten, Herm Hofmeyer

Visualisation and Research Strategy for Computational Spatial and Structural Design Interaction

Abstract: At the department of Architecture, Building and Planning of the Eindhoven University of Technology, a new research project has recently been initiated with the goal to develop a research engine for studying the interaction of spatial and structural design processes. Each design process will be implemented as two separate configurable transformation steps; a conversion step and an optimisation step. The idea is to start with an initial spatial design and measure how the design changes after subsequent iterations through the conversion and optimisation processes. A significant part of the spatial-to-structural conversion step together with a first version of a visualisation tool have been implemented and both perform as expected. During the course of the research project, a first version of the complete research engine will be developed. The performance of this first version will be compared to case studies. Based on these results, adjustments and/or additions to the research engine’s transformations will be made. The final version of the research engine will also be used to experiment on academic designs in order to develop insights in the fundamental relation between space and structure.

Keywords: spatial design, structural design, computational design, visualisation

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Series: w78:2010 (browse)
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Q Sun, S Wu

A crowd movement and behaviour observe tool with configurable individual agents to support building layout design and event plan

Abstract: This paper presents a configurable simulation tool that can simulate crowd movement and behaviour in real time. The tool has three main features: (1) demonstrate the impact of altering building layout (e.g. size of gates, positions of corridors); (2) highlight the effects on crowd behaviour and movement by varying the crowd composition; (3) demonstrate the influence of different external factors (e.g. signs, guide people) on crowd behaviour. The simulation results can be used to help improve building layout design or optimise navigation plans. This tool takes the multi-agent system approach to build a crowd model. Each agent represents an intelligent individual in the crowd and has a unique set of parameters to distinguish it from others. Agent conducts its behaviour by combining basic steering behaviours. Steering behaviours contain steering forces that are calculated by considering surroundings (including crowd and environment objects) as well as individual parameters. All of parameters and steering behaviours are configurable in order to fine-tune the crowd and environment to fit various scenarios. Crowd are formed through interaction and collaboration between agents and environment. Crowd movement and behaviour can be observed from the real time simulator. By altering building structure layout, composition of crowd and navigation plans, crowd movement and behaviour will change accordingly. Such observations and results will provide useful feedbacks to designers and planners.

Keywords: Crowd simulation, Multi-agent system, Crowd behaviour, Decision support

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Series: w78:2011 (browse)
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R Kenley, T Harfield, C Ouyang

LOCATION-BASED MICRO-MILESTONES FAIR SUB-CONTRACTOR PAYMENT

Abstract: This paper introduces the new concept of location-based micro-milestones and argues for their use in achieving fair payment for subcontractors. It integrates location-based management (LBM) theory and Business Process Management (utilising YAWL: Yet Another Workflow Language) to illustrate how location-based BIMs can be utilised for the effective and fair payment systems. It outlines the rationale for linking LBM and YAWL methodologies to develop a BIM alternative solution to a traditional industry problem of late payment for sub-contractors. Location-Based Management methodologies are now available in the powerful scheduling and control software (Vico Office by Vico Software). Originally developed in Finland, it has now become part of the BIM movement through integration into 5D environments (3D + time + cost), using location-based quantity data (from 3D BIM) and location-based scheduling (4D). While LBM is being rapidly adopted in industry, expansion of theory in workflow knowledge based on data from real projects remains limited. YAWL has a well-established foundation based on concurrency theory and workflow patterns derived from research. It is informed by experiences with languages supported by contemporary BPM systems and it has a formal semantics. Linking these two methodologies could provide a BIM solution to the problem of late payment to sub-contractors. The YAWL support environment could be extended to provide a workable interface for auto-generating construction payment processes from digital models based on LBM defined micro-milestones. The visualisation of the YAWL interface and related workflows could be used to both inform the analysis and to communicate the results. This paper suggests a study to obtain proof of concept that LBM and YAWL can create an auto-generated certification and payment system for sub-contractors. Results could be configurable reference process models and workable prototype tools that trigger immediate payment of completed work according to the completion of location-based micro-milestones.

Keywords: Fair payment, location-based management, micro-milestone, BIM

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Series: w78:2011 (browse)
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Raimar J.Scherer, Wael Sharmak

Generic Process Template Description for the Effect of Risks on Project Schedule

Abstract: Many factors impact construction projects and cause changes in the project management plans. These factors can be considered as risks which are impossible to be identified completely in early project stages. Therefore, risk management in construction requires proactive as well as reactive procedures. Risk treatment, among the other risk management subprocesses, has the concrete change action which may modify one or more of the project management plans. In this paper, process modeling techniques are used to describe risk treatment effect on the structure of the project schedule plan. This structural change description is introduced as formalized configurable treatment templates. According to our findings seven generalized templates are efficient to represent the risk part in project reference models concerning process changes which in turn can be tailored and assembled to form up-to-date schedule plans. This kind of risk representation in reference repository will serve as means of knowledge management by providing all risk-related available information as response to a critical event. The Event-driven process Chains (EPC) will be used to model risk treatment templates using normal and configurable EPC elements.

Keywords: Process Modeling, Risk Treatment, Configuration, EPC

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Series: w78:2008 (browse)
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Wael Sharmak, Raimar J. Scherer, Peter Katranuschkov

Configurable knowledge-based risk management process model within the general construction project process model

Abstract: Risk management in the construction industry is becoming increasingly important to help projects reach their objectives within the planned schedule and costs and without endangering other key performance indicators. However, it is becoming also more complicated because of the use of multiple technologies and the participation of different specialists from different branches. Therefore, a general method enabling the tackling of the Risk Management Process within the whole construction project process is needed. This paper presents a systematic approach for the description of the Risk Management Process based on the ARIS methodology “Architecture of Integrated Information Systems”. The Risk Management Process is sub-structured into three orthogonal views, namely, Organizational, Func-tional and Data, which are inter-linked in an integrative process model using the extended Event Driven Process Chains approach. As risk is an uncertain event that may occur or not, a specific feature of the developed approach is the use of configurable risk treatment templates. Applying one of the Architectures of Collaborative Scenarios, coop-erative risk management enabled by configurable risk treatment templates can be efficiently achieved.

Keywords: process modeling, risk management, configuration management, eEPC, ARIS

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Series: w78:2007 (browse)
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