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A Costin, J Teizer

Utilizing BIM for Real-Time Visualization and Indoor Localization of Resources

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Series: w78:2014 (browse)
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Blain M

Cognitive theory in relation to the ACTof drawing in electronically generated programs

Abstract: "Visual perception processes in sequential samples or fixated forms. Therefore, if we are to achieve unified perceptions there must be an integration of visual input over time. These sensations are not rich enough to mediate perception, we as perceivers must add to them. This elaboration of sensation involves inferential processes, semantic, semiotic and metaphorical associations, utilizing memory, habit, etc. This paper forms a basis for looking at these inputs as abstractions and how this enables a better understanding of: Cognition, visual and computational perception Computational descriptive rules Constructivist machine vision programs uses of Cognitive and visual theories within the mechanics of drawing. This examination expands towards exploring issues of presence and absence and the confusion of boundaries between inside and outside, hybridity, infiltration and dispersion, non-grounds and objects within."

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Full text: content.pdf (199,792 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.036182) class.roadmaps (0.021100) class.software development (0.012792)
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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


Charalambos Kyriakou and Symeon E. Christodoulou

Detecting Pavement Patches Utilizing Smartphones Technology and Vehicles

Abstract: Presented herein is a study on the utilization of low-cost technology for detection of roadway pavement anomalies (patches and potholes), by use of sensors on smartphones and of automobilesÕ on-board diagnostic (OBD-II) devices for the collection and analysis of vibration-related data while vehicles are in movement. The mobile data collection kit consists of a triaxial accelerometer, a gyroscope and a global positioning sensor. The smartphone-based data collection is complimented with robust regression analysis and a bagged-trees classification model for the classification of pavement anomalies. The proposed system is readily available, low-cost and adequately accurate, and can be utilized in crowd-sourced applications for pavement monitoring. Further, the proposed methodology has been field-tested, exhibiting detection accuracy levels higher than 90% for pavement patches, and it is currently expanded to include larger datasets and a bigger number of pavement defect types.

Keywords: Pavement Anomalies, Detection and Classification, Smartphones Technology, Robust Regression, Bagged Trees

DOI: https://doi.org/10.24928/JC3-2017/0109

Full text: content.pdf (1,528,885 bytes) (available to registered users only)

Series: jc3:2017 (browse)
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Ekaterina Petrova, Mai Brink Rasmussen, Rasmus Lund Jensen and Kjeld Svidt

Integrating Virtual Reality and BIM for End-User Involvement in Design: A Case Study

Abstract: The outcome of projects within Architecture, Engineering, and Construction is highly dependent on the quality of the collaboration between the involved actors. The end-users occupy the buildings on a daily basis, and therefore their involvement in the design process is essential to the output. However, traditional practices place the responsibility of decision-making mostly in the architectsÕ hands. Virtual Reality technologies coupled with Building Information Modelling have the potential to improve the collaboration and data visualization in the building design.This paper presents the findings from a case study on the integration of Building Information Modelling and Virtual Reality for user-centred participatory interior furnishing of a new university building. Besides a significant reduction in the time for generation of alternative proposals, the end results show an increased attachment of the employees to their future workplace and a high level of acceptance towards the technology. Finally, the authors present suggestions for further work, which could improve future design processes utilizing the Virtual Reality technology.

Keywords: Virtual Reality, Building Information Modelling, End-User Involvement, Interior Design, Participatory Design

DOI: https://doi.org/10.24928/JC3-2017/0266

Full text: content.pdf (1,308,997 bytes) (available to registered users only)

Series: jc3:2017 (browse)
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G Guven, E Ergen

Utilizing Field Data Capture Technologies for Monitoring Activities in Double-Shift Construction Projects

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Full text: content.pdf (173,225 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Georgios Hadjidemetriou and Symeon E. Christodoulou

Pavement Anomalies Detection and Classification Using Entropic Texture Segmentation and Support Vector Machines

Abstract: Presented herein is a vision-based method for the detection of anomalies on roadway pavements, utilizing low-cost video acquisition and image processing of road surface frames collected by a smartphone (or camera) located on a vehicle moving in a real-life urban network, along with entropy-based texture segmentation filters, and support vector machine (SVM) classification. The proposed system, which has been developed in MATLAB, pre-processes video streams for the identification of video frames of changes in image-entropy values, isolates these frames and performs texture segmentation to identify pixel areas of significant changes in entropy values, and then classifies and quantifies these areas using SVMs. The developed SVM is trained and tested by feature vectors generated from the histogram and two texture descriptors of non-overlapped square blocks, which constitute images that includes ÔÔpatchÕÕ and ÔÔno-patchÕÕ areas. The outcome is composed of block-based and image-based classification, as well as measurement of the patch area.

Keywords: Pavement Condition Evaluation, Road Anomaly Detection, Vision-Based, Entropy, Texture Segmentation

DOI: https://doi.org/10.24928/JC3-2017/0191

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Griffith E D, Hicks D K, McGraw K D, Case M P

Towards model based design - a case study: the modular design system

Abstract: The U.S. Army Corps of Engineers has developed a tool called the Modular Design System (MDS) to assist design professionals in the processes of planning, design, and construction document preparation for repetitive facility types. The use of early versions of MDS has demonstrated a reduction in time by nearly two-thirds typically required to design and award a construction contract. Initially developed to support Army Reserve Training Centers, the USArmy Corps plans to expand its use over a wider range of repetitive facility types. The current implementation is a hybrid document/model approach consisting of electronic drawings linked by an external database. Data consistency issues associated with this architecture limit its scalability. To meet expanded requirements, the USArmy Corps is developing a model based information approach utilizing emerging commercially available object based CAD systems. This redesigned information infrastructure marks a fundamental change from an implicit to an explicit model-based representation. Three key capabilities make MDS a powerful tool. First, the ability to capture and reuse corporate design criteria at the architectural function level. Second, it provides an integration framework for engineering analysis. Third, it manages and integrates the contract document production.The underlying MDS information infrastructure will move towards a model based approach. Future work will focus on collaborative processes such as conflict resolution and design review. Additionally, MDS offers the opportunity to transfer an information rich model downstream to operations and maintenance.

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Full text: content.pdf (98,970 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.023318) class.bestPractise (0.016810) class.store (0.013255)
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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.


Gursans Guven and Esin Ergen

Progress Monitoring of Masonry Work Via Resource Tracking Using Sensor-Based Technologies

Abstract: Current manual methods used for construction activity monitoring is costly and error-prone, and they lead to inefficient decision making, delays and cost overruns. The aim of this study that is explained in this paper is to automatically monitor construction activities by tracking major resources by fusing sensor-based technologies. This study specifically focuses on double-shift construction sites and proposes an approach that can be used both during the day and night shifts. A proof-of-concept prototype was developed and implemented at a construction site for monitoring the progress of masonry work. The resources that were tracked were the equipment used in performing the activity (i.e., tower crane and construction hoist) and the bulk material (i.e., reusable concrete masonry block pallets). This paper provides the requirements identified for utilizing the technologies (i.e., position and load sensors on tower crane and RFID system on hoist) to track construction equipment and bulk material in monitoring the masonry work progress. The prototype development and the test set-up are described. Finally, the preliminary results achieved during the implementation of the prototype and the challenges observed are presented.

Keywords: Automated Progress Monitoring, Equipment Tracking, Sensor-Based Technologies

DOI: https://doi.org/10.24928/JC3-2017/0170

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J Wang, X Wang, W Shou, J Guo

An Approach of Utilizing Building Information Modeling to Optimize MEP Layout

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Full text: content.pdf (614,849 bytes) (available to registered users only)

Series: w78:2013 (browse)
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J. Porkka, J. Kojima, K. Rainio & K. Kähkönen

Utilizing 4D Technology in Supply Chain Management

Abstract: During the last decade the role of technology in supporting the project execution and management has increased. However, the real impacts to supply chain have not been considered. This paper introduces a study utilising 4D technology for supply chain management. We explore how the interactive 4D application can be used for testing alternative supply chain scenarios. We describe experienced challenges when developing 4DLive Linker environment, which enables simulations of multiple scenarios in large construction projects. We demonstrate the research approach in a residential housing case that has two supply chain alterations. Our experiences show that decision making benefits from interactive environment. The end result enhances existing 4D applications to direction where alternative plans can be easily incorporated into applications, studied further interactively and presented in a communicative manner for decision making and construction site training.

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Full text: content.pdf (370,173 bytes) (available to registered users only)

Series: w78:2009 (browse)
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