Abstracts – Browse Results

Search or browse again.

Click on the titles below to expand the information about each abstract.
Viewing 1 results ...

Bhaumik, P K (2016) Developing and Using a New Family of Project S-Curves Using Early and Late Shape Parameters. Journal of Construction Engineering and Management, 142(12).

  • Type: Journal Article
  • Keywords: Project management; Project planning and design; Scheduling; S-curves; Beta distribution;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)CO.1943-7862.0001201
  • Abstract:
    Different types of functional relationships have been proposed by many authors to model the cumulative progress curve or the S-curve of a project. They have mostly tried to develop equations which generate a curve having the shape of an S and then tried to mold that into the project of choice. A completely different approach has been used based on a hypothesized behavior of the progress rate of the project. This leads to the development of beta S-curves based on the beta distribution having two parameters. Although beta S-curves have been used earlier for probabilistic forecasting of estimated duration at completion, the early and the late shape parameters of the beta S-curves are explored and ways to estimate these are presented—both before and after the detailed planning have been done. When applied to data from real projects taken from published literature, it was found that the beta S-curves uniformly reported better fit compared to the logistic S-curves.