Abstracts – Browse Results
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Abdirad, H (2020) Developing digital project delivery routines around frequent disruptions: How do AEC organizations respond to disruptive information exchange requirements?, Unpublished PhD Thesis, , University of Washington.
Al-Saleh, F S (1980) A case study and evaluation of a technological delivery system: Construction management in Saudi Arabia, Unpublished PhD Thesis, , University of Washington.
Astaneh Asl, B (2019) Effects of using virtual reality on AEC team collaboration, Unpublished PhD Thesis, , University of Washington.
Azari Najafabadi, R (2013) An evaluation framework for the integrated design process of sustainable high-performance buildings, Unpublished PhD Thesis, , University of Washington.
Fardhosseini, M S (2021) A quantitative analysis of the impact of integrating digital technology for formwork fabrication on human factors perspectives, Unpublished PhD Thesis, , University of Washington.
- Type: Thesis
- Keywords: coordination; equipment; formwork; noise; fabrication; industrialization; learning; productivity; safety; quantitative analysis; workflow; case study; machine learning
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/2562798760
- Abstract:
With the current advancements in artificially intelligent machines and robotic systems, the use of digital fabrication tools has become the mainstream of construction industrialization. Digital fabrication facilitates the transformation from design to physical products. Despite the fact that there are several benefits of utilizing digital fabrication in the construction industry, only a few publications have concentrated on how digital technology will increase project productivity, safety, and quality. In detail, while digital fabrication tools hold promise in reducing worker physical activity, there is a lack of knowledge in the psychophysiological aspects of interaction with this data-driven equipment. This knowledge gap can particularly be realized in the sphere of Computer Numerical Control (CNC) systems, where the worker's mental demand is still unknown. This matter's prominence lies in the potent role of high cognitive workload on human errors, one of the leading causes of accidents at construction job sites. To bridge this gap, this study aims to investigate three main objectives: (1) to develop and test workflows from design to fabrication processes for formwork production using digital models and CNC machines. These workflows combine VDC trade coordination, 3D parametric modeling, tool path development, and CNC routing in order to produce precision prefabricated formwork components. The productivity of the developed workflows was measured for evaluation purposes. To validate the examined productivity, a case study including prefabricating concrete edge forms for a 25 story post-tensioned, cast-in-place structure has been shown; (2) to quantify workers' mental workload when using CNC machine and to compare this workload with the case when workers fabricate formwork manually; (3) to quantify workers' emotion when interacting with CNC machine and compare this amount with the case when workers fabricate formwork manually. The second and third objectives were obtained by interpreting participants’ brainwaves recorded from a wearable electroencephalogram (EEG). To that end, ten subjects having the experience of working with both CNC machines and manual tools were recruited to perform formwork fabrication under two different conditions, operating with and without a CNC machine. Various signal processing techniques (e.g., removing movement artifacts, removing environmental noise etc. ) were used to remove EEG artifacts. Then, time and frequency domain analyses were performed to extract different EEG metrics representing workers' cognitive load, such as alpha, beta, and theta power bands. The research team was able to display the difference in mental workload/emotion in the two scenarios using hypothesis testing and different machine learning classifier algorithms. It is expected that the results of this study will provide useful guidelines for contractors to notice the advantages of using CNC machines over that traditional approach and to help them to make better decisions in terms of enhancing their profit margin despite the rising construction-related cost trend.
Gambatese, J A (1996) Addressing construction worker safety in the project design, Unpublished PhD Thesis, , University of Washington.
Gutub, S (2019) Framework for the implementation process of public-private partnerships (P3s) in highway projects, Unpublished PhD Thesis, , University of Washington.
Ho, C T T (2019) Application of optimization to the production planning of construction prefabrication supply chains, Unpublished PhD Thesis, , University of Washington.
Homayouni, H (2015) Aligning contractual, technological, and organizational elements to achieve higher performance buildings: A qualitative comparative analysis approach, Unpublished PhD Thesis, , University of Washington.
Lee, N H (2009) A framework for developing new visualization schemes for construction project performance monitoring, Unpublished PhD Thesis, , University of Washington.
Lee, W (2018) Use of wearable sensors to unveil roles of task demands-personal resources and burnout on performance of construction workers, Unpublished PhD Thesis, , University of Washington.
Lewis, N S (2023) Development of an open-source methodology for simulation of civil engineering structures subject to multi-hazards, Unpublished PhD Thesis, , University of Washington.
Lowry, M B (2008) An online analytic-deliberative approach to public participation for transportation investment decisions, Unpublished PhD Thesis, , University of Washington.
Manninen, D L (1981) Labor force migration associated with nuclear power plant construction, Unpublished PhD Thesis, , University of Washington.
Mukherjee, A (2005) A multi-agent framework for general purpose situational simulations in construction management, Unpublished PhD Thesis, , University of Washington.
Ottesen, J (2019) CPM schedule density: A new predictor for productivity loss, Unpublished PhD Thesis, , University of Washington.
Pathak, C (2021) Electric vehicle infrastructure decision support system, Unpublished PhD Thesis, , University of Washington.
Pratama, L A (2023) Immersive visualization intervention on pull planning, Unpublished PhD Thesis, , University of Washington.
Shang, L (2019) Achieving public agency goals in public-private partnerships using innovative payment mechanisms, Unpublished PhD Thesis, , University of Washington.
Son, J (2011) An integrated model of evolution of project teams in large-scale construction projects, Unpublished PhD Thesis, , University of Washington.
Stevens, J D (1981) A study of the relationship between perturbations in construction time schedules and potential construction claims, Unpublished PhD Thesis, , University of Washington.
Tench, B (2022) Designing restoration: Protecting and restoring our attention through participatory design, Unpublished PhD Thesis, , University of Washington.
Wang, S (2017) Integrated approach and analysis of reliability, robustness, resilience and infrastructure applications, Unpublished PhD Thesis, , University of Washington.
Yamaura, J T (2018) The value of cloud computing technology in public transportation construction, Unpublished PhD Thesis, , University of Washington.
Zhang, Z (2021) Participatory ergonomics in construction: Enabling practice-to-research-to-practice via the 2safemodel, Unpublished PhD Thesis, , University of Washington.
Zokaei Ashtiani, M (2022) Data-driven sustainability assessment in roadway infrastructure construction, Unpublished PhD Thesis, , University of Washington.