Abstracts – Browse Results
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Abdenour, J I (2021) A cost estimation model for improving the budget estimates of industrial plant construction projects, Unpublished PhD Thesis, , The George Washington University.
Adoko, M T (2016) Developing a cost overrun predictive model for complex systems development projects, Unpublished PhD Thesis, , The George Washington University.
Alves, L F (2006) Stochastic approach to risk assessment of project finance structures under public private partnerships, Unpublished PhD Thesis, , The George Washington University.
Bersson, T F (2012) A framework for application of system engineering process models to sustainable design of high performance buildings, Unpublished PhD Thesis, , George Washington University.
Boyer, E J (2012) Building capacity for cross-sector collaboration: How transportation agencies develop skills and systems to manage public-private partnerships, Unpublished PhD Thesis, , The George Washington University.
Charoenphol, D (2017) Using robust statistical methodology to evaluate the performance of project delivery systems: A case study of horizontal construction, Unpublished PhD Thesis, , George Washington University.
Cho, S (2000) Sequential estimation and decision-making in project management: A Bayesian way and heuristic approaches, Unpublished PhD Thesis, , The George Washington University.
Elsherbiny, A (2021) Prediction of design error rework cost in EPC industrial projects, Unpublished PhD Thesis, , George Washington University.
Farmer, C M (2018) Constructing program management offices for major defense acquisition programs: Factors to consider, Unpublished PhD Thesis, , The George Washington University.
Griffin, M G (2008) The lived experience of first line managers during planned organizational change: A phenomenological study of one firm in the residential construction industry, Unpublished PhD Thesis, , The George Washington University.
Holmlin, R M (2016) Pre-design methodology for establishing scope-budget and scope-duration alignment for capital projects, Unpublished PhD Thesis, , George Washington University.
Innocent, M J F, Jr. (2018) Predicting military construction project time outcomes using data analytics, Unpublished PhD Thesis, , The George Washington University.
Joao, Z R (2021) Road construction assessment model (RC-AM) to prevent contract overbilling in Angola, Unpublished PhD Thesis, , George Washington University.
- Type: Thesis
- Keywords: accuracy; construction project; e-learning; learning; road construction; training; Angola
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/2572606263
- Abstract:
Despite the $U. S. 2. 1 billion spent annually on road construction, quality of the roads in Angola is still poor in part due to existing issue of contract overbilling. To reduce road-project contract overbilling, this Praxis investigated the use of satellite imagery, which has not been extensively explored, to identify road layers and measure road lengths as triggers for road inspections. These triggers were predicted on the basis of spectral, spatial, and textural features extracted from randomly selected groups of pixels obtained from high-resolution (0. 5 m) optical satellite imagery. To establish a model for these triggers, samples of pixels representing road segments were assigned to either training or validation groups. Machine-learning methods were then applied to classify road layers, using decision criteria for accuracy. Once the road layers were identified and the road lengths measured, the model could be used to detect overbilling and trigger inspections in different road construction projects. The results showed good accuracy in the classification of road layers, with the kappa coefficients greater than 0. 81 (almost perfect) and an overall accuracy exceeding the recommended threshold of 0. 85. In addition, on the basis of the measured road lengths and road-layer detection, the completeness – a ratio between the measured and the reported lengths of road layers – was above the acceptable threshold of 0. 95 for model validation, and below the threshold for some projects in model implementation, indicating potential contract overbilling that required onsite inspection. The greatest overbilling cost that our model predicted was $113,013. 56 (corresponding to 20% overbilling), which requires the immediate attention of the inspector to validate the exact amount. Taken together, this is a promising model that has the potential to solve the problem of road-project contract overbilling in Angola.
Kim, E (2000) A study on the effective implementation of earned value management methodology, Unpublished PhD Thesis, , The George Washington University.
Krone, S J (1991) Decreasing the impact of changes, Unpublished PhD Thesis, , George Washington University.
Lounsbury, C R (1983) From craft to industry: The building process in North Carolina in the nineteenth century, Unpublished PhD Thesis, , The George Washington University.
McDavid, H A (1996) Construction and economic development: A stimulus or constraint in developing countries, Unpublished PhD Thesis, , George Washington University.
Momtazi, S (2021) Reducing cost overruns in construction projects using lean methodology, Unpublished PhD Thesis, , George Washington University.
Ngamthampunpol, D (2008) An assessment of safety management in the Thai construction industry, Unpublished PhD Thesis, , The George Washington University.
Park, J (2015) Essays on the delivery of public infrastructure projects: Empirical analyses on transportation projects in Florida, Unpublished PhD Thesis, , The George Washington University.
Reid, J S (2019) Evaluating the impact of using agile methodologies in heavy-civil construction, Unpublished PhD Thesis, , George Washington University.
Schulte, W D, Jr. (1999) The effect of international corporate strategies and information and communication technologies on competitive advantage and firm performance: An exploratory study of the international engineering, procurement and construction (IEPC) industry, Unpublished PhD Thesis, , The George Washington University.
Shamma, E M (1988) A dynamic model for the growth of construction firms, Unpublished PhD Thesis, , The George Washington University.
Stuban, S M F (2011) Employing risk management to control military construction costs, Unpublished PhD Thesis, , George Washington University.
Taku, A M (2021) Predicting modular efficiency in oil and gas capital projects using multi-criteria decision analysis, Unpublished PhD Thesis, , The George Washington University.
Toliver, B L (2018) Implementing project management plans to control construction costs on military projects in Korea, Unpublished PhD Thesis, , George Washington University.
Tonimoghadam, F (2021) A predictive model for reducing cost and time for the detection of clashes in residential and commercial constructions projects, Unpublished PhD Thesis, , George Washington University.
Wenzelberger, J P (1987) The economic analysis of tall buildings (Milwaukee, Wisconsin; Boston, Massachusetts; Kansas City, Missouri), Unpublished PhD Thesis, , George Washington University.
Zhou, G (2021) Machine learning-based cost predictive model for better operating expenditure estimations of U.S. light rail transit projects, Unpublished PhD Thesis, , The George Washington University.