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Akcamete, A (2011) A formal approach for managing facility change information and capturing change history as part of building information models (BIMs), Unpublished PhD Thesis, , Carnegie Mellon University.
Al-Dughaither, K A (1996) International construction financing strategies: Influential factors and decision-making, Unpublished PhD Thesis, , Carnegie Mellon University.
Amekudzi, A (1999) Uncertainty analysis of national highway performance measures in the context of evolving analysis models and data, Unpublished PhD Thesis, , Carnegie Mellon University.
Atasoy, G (2013) Visualizing and interacting with construction project performance information, Unpublished PhD Thesis, , Carnegie Mellon University.
Bello, M A (2012) Minimizing impediments to design for construction safety (DFCS) implementation on capital projects, Unpublished PhD Thesis, , Carnegie Mellon University.
Ben-Alon, L (2020) Natural buildings: Integrating earthen building materials and methods into mainstream construction, Unpublished PhD Thesis, , Carnegie Mellon University.
Coffelt, D P, Jr. (2008) Roof management improvement: Improving infrastructure management decision making through a consideration of total life cycle cost and deterioration, Unpublished PhD Thesis, , Carnegie Mellon University.
Dayanand, N (1996) Scheduling payments in projects: An optimization framework, Unpublished PhD Thesis, , Carnegie Mellon University.
Ergen, E (2005) Formalization of life-cycle data management of engineered-to-order components using advanced tracking technologies, Unpublished PhD Thesis, , Carnegie Mellon University.
Gordon, C (2006) A formalism and a framework for planning of sensor-based construction inspections, Unpublished PhD Thesis, , Carnegie Mellon University.
He, R (2023) Modeling of sustainable materials management systems: Hybrid science-based, data-driven approaches, Unpublished PhD Thesis, , Carnegie Mellon University.
Herabat, P (1997) A functional specification for a decision support system to select bridge analysis tools, Unpublished PhD Thesis, , Carnegie Mellon University.
Kiliccote, H (1997) A standards processing framework, Unpublished PhD Thesis, , Carnegie Mellon University.
Kiziltas, S (2008) An automated approach for developing integrated model-based construction project histories to support estimation of activity production rates, Unpublished PhD Thesis, , Carnegie Mellon University.
- Type: Thesis
- Keywords: efficiency; reasoning; case studies; interview; validation; construction cost; construction site; decision making; estimating; research methods; standardization; cost estimator; estimator
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/304665875
- Abstract:
When construction cost estimators estimate the production rates of construction activities in a project, they frequently refer to past production rates achieved in a similar project. Problems in the estimations based on such previous data are that the data stored in historical documents and databases do not provide detailed information depicting the conditions under which the activities were executed (i.e., contextual information) in a given project. In addition, these databases do not help estimators to interact with stored production data, at multiple levels of details. This situation results in having cost estimators estimating the same production rate differently, and consequently causes cost overruns or missing project opportunities due to overbids. To improve decision making of estimators in construction companies, I developed a formalism for creating integrated model-based project histories. Creating an integrated model-based project history involved (1) identifying information requirements of estimators from past projects, (2) formalizing customization of contextual information requirements of estimators, and (3) formalizing the development of integrated model-based project histories, such that it supports storing activity-specific contextual and production information together, and aggregating this information to a level of detail desired. The utilized research methods can be characterized as descriptive, qualitative and interpretive. It involved observations on construction sites and estimating departments, formal case studies, ethnographic observations and interviews. In addition, previous research studies and standardization efforts were synthesized to develop a data model for model-based project histories. Validation of the research included validating (a) the comprehensiveness of the identified estimators' information requirements from past projects over different project types and estimators' experience levels; (b) the extensibility of the representation schema, and the precision, recall and efficiency of the retrieval mechanisms developed for enabling estimators to define their contextual information requirements in a customized way; (c) the generality of the reasoning mechanisms in storing contextual information in integrated model-based project histories, and in generating views for estimators; (d) the impact of having project histories on novice and expert decision makers' information use during cost estimating. Such metrics of validation were measured in user tests with utilization of prototype systems (i.e., ContextGen, i-ModelBasedHistoryGen) and a card-game.
Lee, K J (2013) A formal and ontological approach to embed commissioning test protocol into building information model, Unpublished PhD Thesis, , Carnegie Mellon University.
Lee, S H (2009) Computational fieldwork support for efficient operation and maintenance of mechanical, electrical and plumbing systems, Unpublished PhD Thesis, , Carnegie Mellon University.
Ochoa Franco, L A (2004) Life cycle assessment of residential buildings, Unpublished PhD Thesis, , Carnegie Mellon University.
Pradhan, A R (2009) An approach for fusing data from multiple sources to support construction productivity analyses, Unpublished PhD Thesis, , Carnegie Mellon University.
Reich, Y (1991) Building and improving design systems: A machine learning approach, Unpublished PhD Thesis, , Carnegie Mellon University.
Reinhardt, J (2003) Navigational models for effective and efficient interaction with integrated product and process models on construction sites, Unpublished PhD Thesis, , Carnegie Mellon University.
Resendiz-Carrillo, D (1990) Risk-based framework for the selection of socially optimal dam safety goals, Unpublished PhD Thesis, , Carnegie Mellon University.
Rivard, H (1997) A building design representation for conceptual design and case-based reasoning, Unpublished PhD Thesis, , Carnegie Mellon University.
Sharrard, A L (2007) Greening construction processes using an input-output-based hybrid life cycle assessment method, Unpublished PhD Thesis, , Carnegie Mellon University.