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A Alsaffar, N O Nawari, L Muszynski

Tilt-Up Design Software Verification For Lightweight Concrete Wall Behavior During Lifting

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Full text: content.pdf (814,909 bytes) (available to registered users only)

Series: w78:2012 (browse)
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A. Mahdavi, A. Mohammadi, E. Kabir, L. Lambeva

An empirically-based approach toward user control action models in buildings

Abstract: In most buildings, occupants operate control devices such as windows, shades, luminaries, radiators, and fans to bring about desirable indoor environmental conditions. Knowledge of such user actions is crucial toward accu-rate prediction of building performance (energy use, indoor climate) and effective operation of building service sys-tems. This paper describes an effort to observe control-oriented occupant behavior in three office buildings in Austria. Thereby, user control actions as related to one or more of the building systems for ambient lighting, shading, window ventilation, and heating were monitored together with indoor and outdoor environmental parameters. The collected data is being analyzed to explore relationships between the kinds and frequency of the control actions and the magni-tude and dynamism of indoor and outdoor environmental changes. Moreover, implications of user actions for building performance (e.g. energy consumption) are studied.

Keywords: Building performance, facility management, action models, occupant behavior

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Full text: content.pdf (461,652 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Anshuman S, Kumar B

Architecture and HCI: a review of trends towards an integrative approach to designing responsive space

Abstract: Recently, trends in integrating dynamism and response in Computer Aided Architectural Design have been in vogue. Attempts to attach dynamic forces to vector objects and thereby breeding amorphous elements and responsive environments are demonstrated through numerous design proposals in recent times, where design concepts are represented as active systems of forces affecting CAD objects; turning them into responsive amorphous organisms. This intention is compromised once such active forms are translated into built objects from the simulations, which largely remain inert. On the other hand, recent concepts in Human Computer Interaction (HCI) and pervasive computing, have demonstrated relevance in physical objects and spaces; turning them into elements of physical interface to mediate particular human actions, aspects of communication, entertainment and aesthetic expression. While responsiveness grows as a concern amongst architects, allowing HCI features and computational schemes to become integral processes and parameters within architectural design may provide design processes with new approaches to architectural production. This may, in turn, alter the resultant architectural schemes and their behavior. This paper reviews relevant developments that contribute to such potential to inform physically responsive environments and scopes their integration in heterogeneous architectural design processes.

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Full text: content.pdf (319,733 bytes) (available to registered users only)

Series: itaec:2004 (browse)
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Arnold J A, Teicholz P

The use of knowledge based components for automated task support in the process industry

Abstract: This in-process research project investigates u knowledge based component’ information model that is capable of supporting distributed software services for design and engineering in the process industry. The test case component information model for a control valve is based on the results of previous research that defines the information requirements [Arnold, Teicholz I W6]. It integrates an explicit description of product data (form. function, and behavior} and an engineering process to offer partial automation for the task of control valve selection in an intelligent design environment. The research also investigates the business and technical issues related to the deployment of knowledge based component information libraries on the Internet. This work seeks to uaderstand how such sofiware services can be realized, how they can integrate with work process, and how they would benefit A/E/C business practice.

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Full text: content.pdf (1,628,942 bytes) (available to registered users only)

Series: w78:1996 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.024546) class.commerce (0.022756) class.environment (0.020851)
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Permission to reproduce these papers has been graciously provided by the University of Ljubljana. The assistance of the editor, Prof. Ziga Turk, is gratefully appreciated.


Christiansson P

Properties of the virtual building

Abstract: The paper discusses properties of future digital Virtual Buildings from the client, design, construction and operation and maintenance perspectives. In this context the author defines a Virtual Building as "a formalized digital description of an existing or planned building which can be used to fully simulate and communicate the behavior of the real building in its expected contexts".The paper focuses on: (1) requirements formulations of future Virtual Building models, (2) the necessity and possibilities to build redundant, overlapping descriptions of buildings and (3) why and how formal temporal building process properties may be included in the descriptions. The author believes that it is not possible or desirable to create a single non-redundant model to represent a building from concept to demolition. In this discussion an account is also taken of the influences of meta level information models, dependencies between multimedia presentation and application model views, the introduction of platformindependent Internet-based solutions, and the IT-support tools in future intelligent and responsive buildings.

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Full text: content.pdf (312,166 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.social (0.025760) class.communication (0.024143) class.roadmaps (0.018838)
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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.


Delic D

Design of structural elements by use of expert networks

Abstract: Shown are three nets. As the first, shown is an example of evaluating a classic rule based expert system to an expert network by replacing one of its knowledge base searching module with a neural network. The second net is used to describe a behavior model of compound steekoncrete columns. Following the design procedure of the DIN 18800 part two, and using just a selected part of data tables for columns design presented as the input data for neural network , the author succeed to organize the design process by neural network only. The rules in the expert system are used for design flow controlling. The third net is not an expert network. It is a neural network combined with PASCAL codes, but should be embedded into an expert system. The work is dealing with problems of variably Input energy control into structural systems (smart bridges) depending on the monitored generated incoming (traffic) loading.

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

Series: ecce:1997 (browse)
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Dunston, Phllip; McGlothlin, James; and Arns, Laura

An Immersive Virtual Reality Mock-Up For Design Review Of Hospital Patient Rooms

Abstract: Having identified a scarcity of evidence-based design principles and practices for patient-centered healthcare environments, researchers at the Purdue University Regenstrief Center for Healthcare Engineering have developed a Virtual reality (VR) mock-up of a hospital patient room to explore its efficacy for identifying how physical environment and design elements impact behavior, processes and safety. The VR patient room mock-up is designed to have a high degree of interactivity to facilitate evaluation of the designed space as a “healing environment.” Positive feedback from healthcare practitioners regarding the mockup has motivated the Investigators to leverage their experience to create VR mock-ups for other hospital units and venues.

Keywords: CAVE, mock-up, design review, patient room, patient-centered design

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Full text: content.pdf (328,040 bytes) (available to registered users only)

Series: convr:2007 (browse)
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Fischinger M, Turk Z, Cerovsek T

EASY: A Hypermedia learning tool

Abstract: The Web not only distributes classically organized teaching material such as overheads, lecture notes and books, but also encourages new ways of publication and provides the means for content which could not have been printed on paper. In the article we present a tool for teaching earthquake engineering - an Earthquake Engineering Slide Information System (EASY). It uses information technology to present expert knowledge that has been accumulated over the decades by observing structures, damaged by earthquakes. Based on slides taken after major earthquakes such as Northridge, Mexico City and Kobe, a pictorial database of some 500 most descriptive images has been created and carefully annotated with keywords and textual description. By browsing the database and by following hypertext links, the user learns basic pitfalls of earthquake engineering and gains the feeling for the behavior of structures. The system is available both on the Web and on CD-ROM. We describe the system, as well as the design and development process and tools.

Keywords: earthquake engineering, education, multimedia

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Full text: http://www.itcon.org/1998/1 (available to registered users only)

Series: itcon:1998 (browse)
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Gurevich U,Sacks R

Integrated virtual reality and discrete event simulation methods for production system research in construction

Abstract: Researching the behavior of production systems in construction is challenging because outcomes depend not only on production system design and on control strategies, but also on the decision-making behavior of works managers, crew leaders and suppliers. People make decisions within their context, and with limited and often uncertain information. This is especially true in the case of construction projects, where production is dependent on close coordination between multiple independent subcontractors. Theoretical models of the systems are limited if they ignore the human element, or if they assume rationality in decision-making. Thus experimental setups designed to test proposed production control systems or strategies should incorporate live experiments with human subjects. Virtual reality (VR) environments linked with discrete-event simulations (DES) provide an excellent platform for this kind of experimental setup. They enable, for example, experiments to compare performance with and without proposed information systems or other tools. We review the state-of-the-art in research of production control systems in construction management, with emphasis on VR and DES. We describe the experience gained in using a hybrid 'Virtual Construction Site' (VCS) system in which construction crew leaders were immersed in a virtual reality (VR) CAVE where they worked in a DES controlled site. The VCS proved its efficacy by allowing the researchers to observe, record and analyze the decision-making behavior of human subjects in a controlled environment, with high accuracy and in relatively very short times.

Keywords: Computer aided simulation,Construction management,Discrete-event simulation,Experimentation,Production system design,Virtual Reality

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Full text: content.pdf (545,193 bytes) (available to registered users only)

Series: convr:2013 (browse)
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Hakim M M, Garrett J H

Issues in modelling and processing design standards

Abstract: In almost all engineering design contexts, design standards are used to specify performance requirements Design standards, or codes ofaccepted practice, have traditionally existed only in textual form. The complexity of the information expressed within a standard, and the fact that related information is usually scattered over many differentsections of a standard, makes standards hard to understand, prone to errors of omission during usage, and subject to multiple interpretations. This problem is compounded by the fact that standards are also subject to change as research leads to improved understanding of behavior. This paper first discusses the current approaches for developing andusing a design standard and then identifies several components that are needed to provide effective computer-based assistance to standards authoring, promulgation and evaluation. Next, the issues that must be addressed in providing these computer-aided standards processing components are discussed. As these issues are raised, an object-oriented approach to addressing these issues is also discussed.

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Full text: content.pdf (2,064,000 bytes) (available to registered users only)

Series: w78:1992 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.034880) class.communication (0.018374) class.software development (0.017529)
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Permission to reproduce these papers has been graciously provided by Research Press of the National Research Council of Canada. The support of the editor, Dr. Dana Vanier, is gratefully appreciated.


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