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Boughton G S, Futcher K G, Lloyd R H, McMahon M A

Management of dynamic projects within a virtual (paper-less) office

Abstract: This paper presents fresh directions currently being developed and implemented for project management of major works for the Highways Department of the Government of the Hong Kong Special Administrative Region (S.A.R). Techniques based on a new approach to computer-aided office practices and procedures, for office-based and on-site professionals and technicians. The intention is a replacement for previous technologies which are seen to be encumbered by outmoded traditional project information management processes. The Government of Hong Kong SAR gained considerable experience and immeasurable benefit from the use of IT, on what has been the world’ s largest infrastructure programme of the 1990’s, namely the new Chek Lap Kok international airport with accompanying arterial express routes. Through economic necessity, the Government plans to promote significantly more construction within the territory in the next two decades, with projects of comparable magnitude, commencing as the airport-core-programme reaches completion in 1998. What has emerged in the course of construction works since 1993, is a striking departure from traditional administration-centred-office-operations. It has become evident that project management processes must avoid being swamped by large volumes of project information and its dissemination. Disparate manual record keeping and paper document processing are a limitation and hindrance to collaborative tasking essential to any project. Computerised record keeping, status tracking and on-line project cost reporting are demanded as an essential panacea to these ailments. It is anticipated that full relief must be gained by implementing professional-centred-office, operations which provide full office automation: the creation of the ‘virtual’ project management organisation. The paper describes the practical research commissioned by the Highways Department to enable implementation of technologies for a practical information system to serve pragmatic people in the manner of a virtual project management organisation.

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Full text: content.pdf (48,899 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.021601) class.economic (0.014870) class.synthesis (0.009177)
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Permission to reproduce these papers has been graciously provided by Royal Institute of Technology, Stockholm, Sweden. The assistance of the editors, Prof. Bo-Christer Björk and Dr. Adina Jägbeck, is gratefully appreciated.


Kjell Svensson Magnus Hunhammar, Zabielski L

Are scanned drawings sufficient for facility management work?

Abstract: In the construction industry today we see that the focus has changed from design and construction to facility management. To meet rising demands on efficiency and service in facility management, together with a larger and more complicated amount of information, there is a need for using information technology, Drawings are traditionally the most important source of information and this will probably remain so in the future. Almost all drawings are today kept as paper documents or as micro-films. The first step towards a computerised operation is to transform these drawings into a digital format. This paper describes the numbers and various types of drawings involved in facility management and in what way they are used. The hypothesis “there is no need to vectorise huge volumes of old drawings - it is enough to scan them ‘ is tested through a prototype system. This prototype seems to handle and use the graphical information in ways that are suitable for facility management. In the prototype system, drawings are linked together and combined with alpha- numerical documents and database facts in accordance with a building product model structure. The recent progress of scanning techniques, including efficient compression of raster files and the raster-vector overlay technique for CAD and database applications, makes scanning a satisfactory way of digitising old drawings. A desirable development of the scanning technique would be automatic or semi- automatic recognition of building products in drawings of raster format. This will facilitate the use of building product-structured information that is created in the construction process. And this will further integrate design and construction with facility management.

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Full text: content.pdf (1,288,054 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.016882) class.store (0.014801) class.economic (0.009941)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Lavrencic,Darko

THE INTRACRANIOVERTEBRAL VOLUMES, THE CEREBROSPINAL FLUID FLOW AND THE CEREBROSPINAL FLUID PRESSURE, THEIR HOMEOSTASIS AND ITS PHYSICAL REGULATION

Abstract: Preface. After publication of the presented hypothesis some predictions were verified independently by other authors: (1) Monro-Kellie "four compartments" doctrine, (2) relation between CSF formation and CSF removal in physiological phase as presented with illustrative curves, (3) hypovolemia during intracranial hypotension syndrome, (4) increased CSF proteins in decreased CSF flow and (5) influence of neuro-vegetative system on CSF pressure. The predictions not yet verified: (1) turning points B-low and B-high that represent physiological borders, (2) pathophysiological self-sustaining phases of low and high CSF pressure with corresponding minimal or maximal CSF volume (maximal dural sac collapse or distension) and no CSF transport, (3) compensated and de-compensated conditions. None of the predictions were disproved yet. The purpose of this presentation on the INTERNET is to promote further discussions about unverified predictions and to encourage clinical research and experimenting in this direction. Summary. Physiological and pathophysiological processes in the intracraniovertebral space are specific because of its rigid and constant volume (Monro-Kellie doctrine). The hypothesis presents how the homeostasis of the intracraniovertebral compartments' volumes, cerebrospinal fluid (CSF) flow and CSF pressure is physically regulated. The hypothesis takes into account the quantitative and qualitative relations regulating CSF formation and CSF removal on which the homeostasis is based.

Keywords: cerebrospinal,fluid,intracranial,hydrodynamics,formation,production,reabsorption,pressure,hypothesis,flow,homeostasis,physical,CSF,hypotension,hypertension,circulation,dural,sac,sinuses,venous,sinuses,extradural,epidural,chorioideus,plexus,hypovolemia,hydrocephalus,subarachnoidal,space,ventricles,arachnoidal, villi,granulations,cribriform,plate,canalis,centralis

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Full text: content.lavrenč (696,205 bytes) (available to registered users only)

Series: other (browse)
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Schnabel M A, Kvan T

Interaction in virtual building space

Abstract: This paper presents the results from two experiments in working on descriptions of form in immersive virtual environments (IVE). Recently, Virtual Environments (VE) are increasingly used as environments for design and research. Using VE to visualize ideas from the initial steps of design, the architect is challenged to deal with perception of space, solid and void, without translations to and from a two dimensional media. From this new ability, we might expect new forms of design interaction and expression. The goal of our studies was to identify how designers use and communicate early design ideas by using immersive three-dimensional (3D) VEs and how they describe 3D volumes using different media. We set-up a series of experiments including navigation- and perception-tasks, designing in IVE, transcription of design, remote communication between design partners and controlled observations. We explored initial intentions of 3D-immersive design schemes, textual descriptions and collaborations within IVE. This paper describes the outcome of creation, interpretation and communication of architectural design, by using an Immersive Joint Design Studio, as well as the description and translation of a 3D cubic structure. We discuss frameworks and factors influencing how architectural students communicate their proposals in an immersive Virtual Environment Design Studio (VeDS), and how this approach of design studio enables to understand volumes and spatial relationships.

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Full text: content.pdf (1,298,941 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.052786) class.environment (0.026812) class.synthesis (0.019384)
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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.


T Cerovšek

IMREC: A long-term reference collection for the advancement of ‘Information Management and Retrieval in Engineering’ (IMRE)

Abstract: An open-access edited repository providing a long-term scientific reference collection for research and development (R&D) in Information Management and Retrieval in Engineering (IMRE) is presented. IMRE goes beyond textual information retrieval (IR), as it addresses vast volumes of project-specific, task-centred, non-/semi-/well-structured engineering alphanumeric, graphical, 3D geometry and model data (e.g., analytical models, time-history series, analysis results and BIM). To facilitate the R&D in IMRE and to avoid redundant preparation of test data for large-scale test-beds IMRE Reference Collection (IMREC) is proposed. IMREC will provide a set of relevant queries, reference collections and procedures that will make IR benchmarks repeatable, comparable and interoperable. The purpose of this paper is to present the approach and to invite peers to make use of and to contribute to IMREC. IMREC uses an R3-M6 approach, where R3 stands for Relevant, Reachable and Representative and M6 stands for Measurable, Multi-standpoint, Multi-application, Multi-phase, Multi-level-of-detail and Multi-lingual. Initially, we reviewed more than 70 existing test collections, developed a Dublin-Core repository and primed sample data. IMREC will serve for the R&D in IMRE to better address engineering information needs, improve communication in R&D and allow for technology transfer.

Keywords: information management, information retrieval, reference collections, aec workflows, bim

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Full text: content.pdf (230,460 bytes) (available to registered users only)

Series: w78:2011 (browse)
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T H Beach,Y Rezgui, O F Rana

CLOUDBIM: MANAGEMENT OF BIM DATA IN A CLOUD COMPUTING ENVIRONMENT

Abstract: The construction industry is currently facing the challenge of managing and sustaining increasing volumes of data across supply chains and life-cycles, from concept design to decommissioning. This data is of a varying nature embedding various forms of sensitivities with potential commercial, legal, contractual, intellectual property rights, and confidentiality implications. This paper presents our work towards the development of a governance model, for managing and allowing the secure sharing of Building Information Model (BIM) data. Our governance model has been developed based on a process of industry consultation, through a series of workshops and focus group meetings, which has been undertaken in order to gather and understand the current barriers to BIM efforts within the construction industry. We then present a prototype implementation of our governance model, utilsing the Cloud Computing paradigm, which we believe offers unique advantages when applied to the management of BIM data. This prototype has been constructed using the open source CometCloud system from Rutgers University (USA) and has been developed with the goal of providing an open interface to allow data-transfer with third party tools. To demonstrate this we show our initial work in developing an application plugin for Google Sketchup to enable the intregration of industry tools into the CloudBIM system.

Keywords: BIM, Governance, Cloud Computing

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Full text: content.pdf (446,291 bytes) (available to registered users only)

Series: w78:2011 (browse)
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Vanier D J, Lacasse M A, Payer D R

SL/AM-IT: a CD-rom-based, interactive bibliography on service life and durability

Abstract: This paper describes a technology transfer technique to handle large corpora of technical information. The paper describes and illustrates a sophisticated Information Technology tool to interactively browse over 1500 abstracts and full text documents in the domain of service life and asset management. The first goal of the project is to provide full access to this compendium of information in the topic domain. The second goal of the project is to illustrate a methodology for data storage, data retrieval and technology transfer for other technology domains. The product described in this paper is a compact disk-read only memory (CD-ROM)-based, interactive bibliography on service life prediction, durability and asset management. There are two innovative features of this compendium: (1) a keyphrase index, that was created automatically using sophisticated indexing tools, and (2) an intuitive, interactive interface to large volumes of technical information. The paper describes the problems of accessing the existing large volumes of data and information related to service life prediction, durability and asset management, outlines sophisticated IT tools currently available for indexing and searching large corpora of technical information, details the interface and background data structure of the SL/AM-IT (Service Life/Asset Management-Information Technology) methodology and product, and discusses advantages of such techniques in the domain of service life and asset management and other similar technical domains.

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Full text: content.pdf (427,228 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.042938) class.bestPractise (0.027039) class.represent (0.026215)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Vanier D J

Hypertext - a computer tool to assist building design

Abstract: This paper shows how hypertext, an electronic information transfer medium, can assist building designers access the large volumes of architectural and engineering technical information needed in decision-making phase of building design. A technical paper on architectural details serves to model the capabilities of hypertext. This example consists mostly of graphics and illustrates how the hypertext medium could act as an information source for designers in the construction industry. The objectives of the paper are to illustrate the potential of hypertext to create, disseminate, and access technical information, and to identify an electronic format for construction industry technical publications. The paper identifies the capabilities of the medium, some advantages and disadvantages of hypertext, and the potential of the medium for construction information transfer. The author suggests that hypertext systems can assist technical information transfer in the construction industry.

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Full text: content.pdf (3,911,455 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.bestPractise (0.049675) class.education (0.033303) class.synthesis (0.032053)
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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.


Yasumuro Y,Kusakabe S,Dan H,Fuyuki M

3d barrier-free verification for wheelchair access

Abstract: This paper proposes a new methodology for identifying barriers encountered by wheelchair users in daily life spaces. Currently, barrier-free designs are required not only for newly constructed buildings, but also when renovating existing facilities and public spaces. However, the arrangement of furniture, equipment, and many other objects in a space often impose barriers, and even the simple bumps and steps on pathways can obstruct wheelchair passage. Furthermore, it is often difficult for administrators to envisage the full reality of barriers in their facilities because potential obstacles can be created inadvertently by a variety of objects that have complicated three-dimensional (3D) geometries. In such cases, their existence will normally remain unknown until someone actually tries to transit the area using a wheelchair. Our approach aims to capture the overall dimensions of target spaces by collecting and combining depth images taken using a hand-held RGB-D camera (also commonly referred to as a ranging camera), and then to navigate a virtual wheelchair through the target space in a computer simulation to check for obstacles. The practical egomotion capabilities of RGB-D camera sensors within actual environments make it possible to achieve real-time simultaneous localization and mapping (SLAM) functionality, which is necessary for creating accurate 3D location maps. The Microsoft Kinect™ sensor, which was originally designed as a user interface for home-use video games, is a good example for a low-cost, compact RGB-D camera. Since the Kinect device is sufficiently compact for use when capturing arbitrary objects in situ, we adopted it for use in our study and applied a SLAM technique to perform barrier checks. Our simulation employs 3D projections of all objects and wheelchair transit volumes onto a floor plane in order to detect potential obstacles. We implemented our proposed method on a laptop personal computer (PC) and collected data from actual classroom and common space locations in a university. The experimental results of our method showed effective functionality in terms of practicality and usability.

Keywords: Wheelchair user,Barrier-free,RGB-D camera,Free-hand scan,Obstacle check,3D model

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Full text: content.pdf (1,216,493 bytes) (available to registered users only)

Series: convr:2013 (browse)
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