Abstracts – Browse Results
Click on the titles below to expand the information about each abstract.
Viewing 19 results ...
Abou-Zeid, A M K (1993) Data flow identification to support project automation/integration and productivity, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Al-Fares, M A (1995) On the development of an integrated system for the automation of on-site reinforced concrete construction, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Ammar, A I (2001) Profitability of electrical contractors using financial and economical data: The effect of company's size, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Choi, J (2003) Strategic motives underlying M and A transactions in the United States public construction industry, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Choi, K (2008) Applications of its archived data for improved highway planning and design, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Huang, C-N (2003) Time study on two-echelon supply chain for steel framing construction: Field investigation and networking model simulation, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Ibrahim, M W W (2018) Improving project performance by mitigating out-of-sequence work and assessing construction readiness, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Jang, H (2002) Construction material logistics: Project manager level of satisfaction and facilities layout planning, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Kang, M M K (2014) Development of an expert system for sustainable pavement preservation strategies (es2p2s), Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Kim, S-K (2001) Toward a framework for an intelligent earthwork system (ies), Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Koo, K-J (2000) Organizational program management for multiple maintenance projects under multi-trade capacity constraints, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Lee, J C (2010) Evaluating the sustainability of construction with recycled materials, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Lee, S (2000) Spatial model and decentralized path planning for construction automation, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
- Type: Thesis
- Keywords: accuracy; guarantees; construction site; sensors; automation
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/304637980
- Abstract:
This thesis presents a decentralized path planning system for multiple construction automatons. The decentralized path planning system consists of a host computer for providing a spatial model, construction automatons, a human interface for supervising the spatial model and automatons, and human operators. Each automaton independently plans its path using the spatial model and local information in real time. The construction site is defined as partially known and unknown environment, the spatial characteristics of the construction site are analyzed, and the corresponding spatial model is developed. Considering technological reality, spatial location accuracy constraints, and economical efficiency, only the essential boundary information is included in the known environment that is represented as a spatial model consisting of cells and a network. (Each automaton realizes the unknown environment using sensors.) The cells are geometric objects and provide the domain for path planning. The network is a topological object and is used to compute the shortest path. Each automaton has its own global and local path planners. The global planner computes the shortest path on the network and provides it to the local planner in terms of a sequence of vertices (sub-goals). While following the sub-goals, the local planner uses CAT algorithm to modify the shortest path to avoid unknown or misplaced obstacles. The CAT algorithm guarantees reachability in the environment that is populated by stationary, moving, and composite obstacles. The decentralized path planning system is stable and robust. Each automaton plans its own path and thus computation is distributed and independent of the number of automatons. The path planning system may not deliver optimal performance because of the independence of each automaton. Instead, the decentralized path planning delivers a reasonable performance in a reasonably complex environment. In some situation, an automaton may fail to arrive at its goal, however, the entire system does not fail.
Lukito, P K (2000) A framework for environmental monitoring infrastructure investment planning in developing areas, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Rungjang, K (2013) Public investment for developing port facilities within competitive market, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Schwab, A (2000) Management practices in short-term network organizations: The performance impact of the shadow of the future and psychological contracts in the United States movie industry, 1931--1940, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Shr, J-F (1999) Model development for cost-plus-time bidding applied to Florida department of transportation highway construction, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Sullivan, K T (2004) Quantification of the cumulative impact of change orders on sheet metal labor productivity, Unpublished PhD Thesis, , The University of Wisconsin - Madison.
Taha, M A-E (1994) Applying distributed artificial intelligence to the prequalification of construction contractors, Unpublished PhD Thesis, , The University of Wisconsin - Madison.