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Hartvig S, Ersen T

Teaching computing in civil engineering: knowledge systems.

Abstract: "After decades of research and development in ""advanced"" IT, the picture of IT usage in construction remains the same - industry in general is not taking proper advantage of commercially available IT-technologies, as for example knowledge systems. We and others [Raphael 99] think this is caused by the fact that technical universities do not include teaching in advanced computing for civil and building engineers, despite the outspoken need for it. At Department of Planning at the Technical University of Denmark, we have acknowledged this need, and we offer an intensive class in knowledge engineering. Experiences from that course have been presented in [Andersen98]. It is clear to us that this class is valuable, because it enables a fraction of the new generation of professional engineers to cope with 1) knowledge and problem solving and 2) more advanced use of IT. However, it is equally clear that we need to do more - that is: offer teaching in a broader field than just narrow scoped expert systems. We [Andersen98] have pointed out that the relatively narrow scope of the intensive class present a risk of giving the student a too narrow minded attitude to knowledge systems. We are in the process of renewing and possibly expanding our teaching in knowledge systems. To be able to move in the right direction a survey is about to be performed: we are in the process of tracking ""old"" students, now working in industry, in order to learn how our teaching have impacted their professional life and workplace. We seek empirical support for our idea that handling of ""knowledge"", ""problem solving"" and ""concepts"" are key skills for engineers rather than abilities in specific computer applications. The paper will present the results of our survey and considerations, and will include an outline of an improved teaching programme for knowledge systems in civil and building engineering. [Raphael99] Raphael B, Shea K, Smith I, A task and software independent CAE course, in proceedings AICIVIL-COMP99, civil-comp press 99. [Andersen98] Andersen T, Hartvig S, Teaching Knowledge Engineering: Experinces in: Artificial Intelligence in Structural Enginneering, Springer 99"

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Full text: content.pdf (315,577 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.education (0.056740) class.impact (0.029838) class.environment (0.027163)
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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


Katranuschkov P, Scherer R J

Schema mapping and object matching: a STEP-based approach to engineering data management in open integrated environments

Abstract: "The interoperability of different engineering data models and the product data exchange between heterogeneous design tools are among the most fundamental research problems related to the development of open integrated environments for CAE/CIC. The successful solution of these problems is of primary importance for the acceptance and the wide implementation of product data technology on the basis of ISO 10303 (STEP). This paper presents a flexible, non proprietary, STEP-based approach to design tool integration that has been developed in the EU project COMBI. It focuses on the interoperability methods and tools for product data management realised in the COMBI system: (1) a descriptive schema mapping language which complements the EXPRESS specifications of the implemented product data models, (2) an active object-matching mechanism which serves for providing the consistency of the modelling objects across disciplines, time and design domains, and (3) a communication management module which uses enabling World Wide Web CGI technology to allow for remote and concurrent information exchange via the Internet. Along with a critical discussion of the described integration concept, important future research topics targeting the development of a concurrent engineering environment, which will be pursued in the COMBI follow-up project ToCEE, are also briefly outlined."

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Full text: content.pdf (357,114 bytes) (available to registered users only)

Series: w78:1996 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.046079) class.collaboration (0.026761) class.environment (0.018245)
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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.


Kiliccotel H, Garrett J H Jr

Obstacles to the development of computable models of design standards

Abstract: Design standards play a significant role in civil engineering. Evaluating a design for conformance using such a large number of design standards is a tedious, laborious, and difficult task. One major research issue in CAE (Computer-Aided Engineering) is to develop software systems to assist in the usage of the design standards in the design process. Many obstacles to the development of such a tool exist; the major obstacles are: design standards are not self sufficient documents; design standards are indeterminate; processing design standards requires non-monotonic reasoning; and design standards contain higher4rder provisions. An approach to dealing with these obstacles is proposed that treats standards processors as distributed black box abstractions able to communicate using a standardized protocol.

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Full text: content.pdf (723,361 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.030674) class.communication (0.012590) class.legal (0.012574)
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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.


Pimentao J P, Sousa P A, Jardim-Goncalves R, Steiger-Garcao A

The road model - roadrobot’s experience in applying standards to road construction process’ models

Abstract: "This paper starts by presenting, in short, the architecture developed within European Project ESPRIT III 6660 RoadRobot (Operator Assisted Mobile Road Robot For Heavy Duty Civil Engineering Applications), that aimed towards the full automation of road construction sites. The purpose of the architecture was to lay the basis for the development of a system capable of integrating a set of applications in a common architecture based on the use of a standard (ISO 10303-STEP). The presented architecture has demonstrated the full integration of information and control, starting by loading the information from the selected CAE system (InRoads from Intergraph), down, through the intermediate steps, to the automatic control of a Road Paver from German manufacturer VÖGELE. The main focus of the paper is on the standard-based information models that have been developed to represent project information throughout the road construction cycle. The initial Road Model Kernel created by TNO has been extended to support road specifications that include an update on the specification of asphalt layers for road paving, but also the addition of geological information for the specification of excavation tasks. A set of models has been developed for the maintenance of information regarding planning and scheduling of tasks, which takes into account the project information. A model for resources is used form maintaining resource information for allocation during planning and scheduling. Finally a control model has been developed for control of execution of tasks. The RoadRobot has demonstrated the use of this architecture, and its underlying information models on a demonstration where information downloaded from the CAE system has made its way to a road paver who paved a road segment without on-site human intervention."

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Full text: content.pdf (328,074 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.standards (0.033764) class.represent (0.021030) class.software-machine (0.016240)
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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


Tiago Martinuzzi Buriol, Sergio Scheer, Eduardo K. Saldanha

SCIENTIFIC VISUALIZATION AND VIRTUAL REALITY TECHNIQUES INTEGRATED TO CAD/CAE SYSTEMS FOR ILLUMINATION DESIGN

Abstract: For a same project, engineers tend to use different software to perform different tasks such as geometry modeling, database management, numerical analysis and data visualization. This may cause decrease of productivity and losses of information during the conversion process between different data file formats. In, most lighting analysis tools for example, the geometry modeling and pre-processing features does not provide all the capabilities available in a CAD (Computer Aided Design) system. Also the presentation of numerical results does not allows a rich and interactive data exploration/visualization such as is provided by Scientific Visualization tools and Virtual Reality systems. The aim of this paper is to describe an lighting analysis application which is an add-in for a 3-D CAD system which integrate all CAD modeling features, algorithms for mesh generation, numerical processing and post-processing of scalar fields, management tools for fixtures database, and a VRML (Virtual Reality Modeling Language) writer/exporter. Basically the application use the workspace of the CAD system as a 3-D interface for to plan the lighting scheme (luminaires choice and positioning), to process the illumination in 2D or 3D meshes chosen by the user, and then, to visualize and explore the results through scalar field scientific visualization techniques (p.e. contours, cut, slices, color mapping). Therefore, the application developed consist of a lighting analysis tool which integrate features for pre-processing, processing and visualization of illuminance fields with rich and intuitive visual interactivity. The method used for the algorithms developments are described and two examples of application are presented, a power substation and a simple house lighting plan.

Keywords: Illumination design, Scalar field post-processing, Scientific Visualization, CAD and CAE integration, CAD3D, VRML

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Full text: content.pdf (380,961 bytes) (available to registered users only)

Series: w78:2008 (browse)
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