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AbouRizk, S M and Wales, R J (1997) Combined Discrete-Event/Continuous Simulation for Project Planning. Journal of Construction Engineering and Management, 123(01), 11–20.

Crowley, L G (1997) Robust Statistical Estimators for Use within Competitive Bid Data. Journal of Construction Engineering and Management, 123(01), 53–63.

Daoud, O E K (1997) The Architect/Engineer's Role in Rehabilitation Work. Journal of Construction Engineering and Management, 123(01), 1–5.

Elazouni, A M (1997) Constructability Improvement of Steel Silos during Field Operations. Journal of Construction Engineering and Management, 123(01), 21–25.

Everett, J G and Farghal, S H (1997) Data Representation for Predicting Performance with Learning Curves. Journal of Construction Engineering and Management, 123(01), 46–52.

  • Type: Journal Article
  • Keywords:
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)0733-9364(1997)123:1(46)
  • Abstract:
    Mathematical learning curve models can be used to predict the time or cost required to perform future cycles in a repetitive construction activity. The analyst has a choice of several methods of representing the data, usually trading off between response and stability of forecasting information. Traditionally, learning curve data has been evaluated using either unit data or cumulative-average data. This paper evaluates those two methods and two other techniques: the moving average and the exponentially weighted average. For the 54 construction activities evaluated, unit data gives the most accurate prediction of the time or cost to complete the remaining cycles of the activity. Cumulative-average data gives the least accurate prediction. Compared to unit data, the exponentially weighted average can predict future performance with only a slight loss of accuracy early in the activity, but equal accuracy later in the activity. The exponentially weighted average may offer an improved combination of stability and response, depending on the smoothing parameter chosen.

Farghal, S H and Everett, J G (1997) Learning Curves: Accuracy in Predicting Future Performance. Journal of Construction Engineering and Management, 123(01), 41–45.

Kangari, R and Miyatake, Y (1997) Developing and Managing Innovative Construction Technologies in Japan. Journal of Construction Engineering and Management, 123(01), 72–78.

Kartam, S, Ballard, G and Ibbs, C W (1997) Introducing a New Concept and Approach to Modeling Construction. Journal of Construction Engineering and Management, 123(01), 89–97.

Mondorf, P E, Kuprenas, J A and Kordahi, E N (1997) Segmental Cantilever Bridge Construction Case Study. Journal of Construction Engineering and Management, 123(01), 79–84.

Russell, J S, Jaselskis, E J and Lawrence, S P (1997) Continuous Assessment of Project Performance. Journal of Construction Engineering and Management, 123(01), 64–71.

Shi, J and AbouRizk, S M (1997) Resource-Based Modeling for Construction Simulation. Journal of Construction Engineering and Management, 123(01), 26–33.

Songer, A D and Molenaar, K R (1997) Project Characteristics for Successful Public-Sector Design-Build. Journal of Construction Engineering and Management, 123(01), 34–40.

Tiong, R L K and Alum, J (1997) Final Negotiation in Competitive BOT Tender. Journal of Construction Engineering and Management, 123(01), 6–10.

Touran, A, Sheahan, T C and Ozcan, E (1997) Rational Equipment Selection Method Based on Soil Conditions. Journal of Construction Engineering and Management, 123(01), 85–88.