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Christiansson P, Svidt K, Ove Skjarbek J, Aaholm R

User requirements modelling and design of collaborative virtual reality design systems

Abstract: Advanced Information Technology today gives us the opportunity to implement sophisticated distributed systems for collaborative design. Persons with different interests and competencies in the building process such as architects, installation engineers, structural engineers, clients, builders can all at least theoretically be brought together in a distributed design space where a virtual building will be designed, build, and functionally evaluated. A design space build in a virtual reality environment will enable us to realistically and efficiently simulate the form, function, and construction of the building object under consideration. In this connection we made the following definition of a Virtual Workspace. 'The Virtual Workspace, VW, is actually the new design room designed to fit new and existing design routines. VW may well be a mixed reality environment. The VW will host all design partners from project start with different access and visibility (for persons and groups) in space and time to the project, and will promote building up shared values in projects. The VW thus acts as a communication space with project information support in adapted appearances. VW gives access to general and specific IT-tools ' The paper presents experiences from the early phases of user requirements formulations and design of such collaborative design spaces. The findings are mainly based on collaborative university and consultant engineering company work done in the EU project 'Distributed Virtual Workspace for enhancing Communication within the Construction Industry - DIVERCITY' as well as experiences from student collaboration in distributed learning environments and earlier research within the area. It is extremely important to bridge the gap between the user requirements specifications and the actual interface design and implementation of the underlying operational models of the distributed virtual workspace system. This is certainly true as we actually design a new type of design artefact that will highly influence the traditional working methods and integration of design resources. The early conceptual design of the virtual workspace follows the so called Contextual Design methodology which gives input to the subsequent data modelling work and implementation in an object oriented web distributed environment. The method used is described and examples on resulting Work Models (work flow, sequence and artefact models) are presented and commented on.

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Full text: content.pdf (634,867 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.065624) class.deployment (0.022154) class.environment (0.022092)
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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.


Enio Emanuel Ramos Russo, Alberto Raposo, Terrence Fernando, Marcelo Gattass, and Börje Karlsson

Configuring A Collaborative Virtual Workspace For Disaster Management Of Oil & Gas Offshore Structures

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Full text: content.pdf (611,548 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Froese T, Q YU K, Liston K, Fischer M

System architectures for AEC interoperability

Abstract: "This paper discusses several issues relating to computational system architectures to support interoperability among distributed, model-based AEC/FM applications. The approach is based on tiered layers where applications interact with local “Building Objects” software components that, in turn, interact with a variety of distributed data repository alternatives in a data layer. International Foundation Classes (IFCs) models are used as the primary data model in each of the layers and communication between layers uses several XML standards. One issue is an approach to multiple meta-models within the many components of a distributed system. IFCs focus on strongly-typed models that describe AEC concepts and objects in an explicit manner. One of the requirements for applications that implement IFCs is that they must understand the semantics of the IFCs and map the IFC models to the application internal application models. However, software applications used in AEC processes are not always based on an internal model that can be explicitly mapped to a strongly-typed model such as the IFCs at development stage. Instead, it is common that some of the applications are either purely generic without an explicitly defined domain schema, or generic enough so as they must deal with run-time databases whose schemas cannot be pre-defined during the development of the applications. In order to allow this type of software to share and exchange data with other applications through the models such as the IFCs, data schemas must be mapped at a higher and abstract level that allows for run-time model schema configurations and mappings. The Interactive Workspace for Project Management (IWPM) is a CIFE (Center for Facilities Engineering) project that integrates several research decision support systems, commercial project management systems, and advanced collaborative human-computer interaction approaches using emerging industry data standards and internet technologies. To illustrate an example of using the meta-model approach, the paper applies the use cases in IWPM to demonstrate how meta-models can be used to implement IFC project management related models in such an integrated software environment."

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Full text: content.pdf (595,267 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.049095) class.standards (0.036666) class.communication (0.035658)
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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


G Luci, Z Shen

A Critical Review of Recent Progress on Construction Workspace Planning Using BIM

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Full text: content.pdf (4,834,417 bytes) (available to registered users only)

Series: w78:2015 (browse)
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M Weise & P Katranuschkov

Supporting State-based Transactions in Collaborative Product Modelling Environments

Abstract: The up to date state and the consistency of shared building model data are of utmost importance for the achievement of efficient model-based collaborative work. However, in engineering design these are not easy tasks. Design activities are typically carried out in long transactions that are characterized by the following three subtasks: check-out of the needed design data into a private workspace, making design changes within the private workspace, and check-in of a new model state into the shared model repository to make changes and decisions visible to the other designers. As a result of various existing semantic interoperability problems, in the new model state both actual design changes and data loss have to be considered that cannot be easily distinguished. To help tackle these problems we suggest a delta-based versioning approach whose essence is in storing design changes instead of complete design states. This approach is then used as basis to support the three data processing stages of a design step within a collaborative work environment, namely (1) creation of the needed and manageable model subset by removing all irrelevant design data, (2) storing the design changes, and (3) restoring the removed data by an ""undo"" operation of the first step. In the paper we present the used semantics for describing design changes, their transformation to deltas and the scope and limits of the suggested undo operation. At the end we provide an example of the use of the suggested approach with the industry standard IFC model and discuss its potential and needed further research.""

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


Mani Golparvar Fard, Sheryl Staub-French, Barry Po and Melanie Tory

Requirements For A Mobile Interactive Workspace To Support Design Development And Coordination

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Series: w78:2006 (browse)
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Meniru K, Bedard C, Rivard H

Early building design using computers

Abstract: Computers and software can be fashioned into multipurpose tools with interactive and efficient storage and retrieval processes that are useful to the early building designer. We seek to provide a tool for the early stages of building design, specifically architectural design. Earlier research and protocol analysis have shown the actions that occur on the design workspace concerning how the architect creates and manages early design data. Drawing specifications from this work, this paper presents functions and implementations that can support the early design process using computers.

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Full text: content.pdf (601,174 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.021164) class.economic (0.011069) class.retrieve (0.009669)
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Permission to reproduce these documents have been graciously provided by the Aarhus School of Architecture, Denmark. The assistnace of the editor, Prof. Kristian Agger, is gratefully aprecciated.


Semenov V,Anichkin A,Morozov S,Tarlapan O,Zolotov V

Effective project scheduling under workspace congestion and workflow disturbance factors

Abstract: Effective project management implies the use of advanced planning and scheduling methods that allow to determine the feasible sequences of activities and to complete a project on time and on budget. Traditional scheduling tools like fundamental Critical Path Method (CPM) and various methods for Resource Constrained Project Scheduling Problem (RCPSP) and Time Constrained Project Scheduling Problem (TCPSP) have many shortcomings for the construction projects where spatial factor plays critically important role. Previously taken attempts to interpret space as a specific resource were successful for particular problems of line-of-balance scheduling, space scheduling, dynamic layout planning, horizontal and vertical logic scheduling, workspace congestion mitigating, scheduling multiple projects with movable resources, spatial scheduling of repeated and grouped activities, motion planning. However, none of these methods considers the spatio-temporal requirements in a holistic framework of generic RCPSP problem and provides feasible results accounting for workspace and workflow factors. In the paper we start with the classical RCPSP statement and then present mathematically strong formalization of the extended generalized problem taking into account workspace congestion and workflow disturbance constraints specified in practically meaningful and computationally constructive ways. For the generalized RCPSP problem an effective scheduling method is proposed. The method tends to minimize the project makespan while satisfying timing constraints and precedence relations, not exceeding resource utilization limits, avoiding workspace congestion and keeping workflows continuous. The method reuses so-called serial scheduling scheme and provides for additional computational routines and heuristic priority rules to generate feasible schedules satisfying all the imposed requirements. Advantages of the method and prospects for its application to industrial needs are outlined in the paper too.

Keywords: planning and scheduling,resource-constrained project scheduling problem,priority rules,4D modeling,workspace management

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Full text: content.pdf (1,073,690 bytes) (available to registered users only)

Series: convr:2013 (browse)
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Semra Comu, John E. Taylor, Carrie Sturts Dossick, Josh Iorio, Anne Anderson and Tripp Shealy

Examining the Effect of Boundary Spanning Technologies in Virtual Project Teams

Abstract: Overcoming the challenges of virtual collaboration may require different approaches to achieve performance objectives for virtual teams of mixed nationality participants as compared to virtual project teams of single nationality participants. Many researchers have examined the way multinational project participants collaborate in order to sustain effective collaboration across boundaries. However, we lack a similarly nuanced understanding of networks of individuals on project teams comprised of mixed nationality participants that utilize virtual collaboration environments and new information technologies. In this paper, we examine the role of Boundary Spanning Visualization Technologies (BSVTs) to understand differences that may emerge at the cross-national boundary in virtual teams of mixed nationality participants. We found that BSVTs within the virtual workspace were utilized more frequently by virtual teams of mixed nationality participants. We also identified a positive correlation between effective technology usage and cohesive collaboration among project participants measured by network density. These findings have important implications for the effective functioning of multinational project teams that utilize virtual environments in the construction industry.

Keywords: Mixed Nationality Teams; Virtual Teams; Virtual Workspace; Visualization

DOI: https://doi.org/10.24928/JC3-2017/0230

Full text: content.pdf (914,561 bytes) (available to registered users only)

Series: jc3:2017 (browse)
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Soubra S, Coudret F, Duchon J, Torguet P, Gobetti E

Virtual integrated design and construction

Abstract: "Construction projects involve a large number of both direct stakeholders (clients, professional teams, contractors, etc.) and indirect stakeholders (local authorities, residents, workers, etc.). Current methods of communicating building design information can lead to difficulties including : ? Client di-satisfaction, due to incomplete understanding of the planned construction and the length of the design and construction processes ; ? Functional inefficiencies of the completed facility which could have been designed out had the users been effectively involved in the design ; ? Re-work leading to waste of time and materials due to inaccurate initial work or clashes between components due to conflicting information. Recent surveys [e.g. Egan report, Design and Build Foundation report] show that significant value improvement and cost reduction can be gained by substantially integrated solutions being applied by project teams as a mean of reengineering the project process. In particular, their is considerable benefit to be gained by the integration of design and construction. Objectives The aim of this paper is to present the research carried out in the frame of the CAVALCADE (Collaborative Virtual Construction and Design) project, funded under the European ESPRIT programme HPCN domain. CAVALCADE’s goal was to develop a collaborative virtual prototyping system. Using a distributed architecture, the CAVALCADE system aims to support and enhance concurrent engineering practices therefore allowing teams based in different geographic locations to collaboratively design, test and validate shared virtual prototypes. Several industrial sectors were presented in the CAVALCADE consortium (construction industry, automotive industry, transport industry and aeronautical industry). Representatives of each of these sectors evaluated and reported on the use of CAVALCADE in their business. In this paper, the CAVALCADE system will be presented in details. Technical and organizational difficulties encountered during the project will be presented. Special emphasis will be put on the evaluations done for the participating industrial sectors and these evaluations will be compared to the specificities of the construction sector. As a conclusion, the objectives of new IST project DIVERCITY (Distributed Virtual Workspace for enhancing Communication within the Construction Industry) that will build, among others, on the results of CAVALCADE, will be presented and the modules to be developed (1. Client-briefing workspace, 2. Design review workspace, 3. Construction workspace) will be detailed. 1 CAVALCADE (Esprit project n°26285) started in January 1998. The project is to be finished by December 1999. 2 High Performance Computing and Networking 3 IST project n°13365 . The start date of the project is January 2000."

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Full text: content.pdf (1,117,713 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.050265) class.strategies (0.045200) class.man-man (0.009804)
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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


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