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Author: geraldine cheok
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Displaying records 61 to 70 of 82 records.
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61. Registering 3D Point Clouds: An Experimental Evaluation
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6743
Published: 5/1/2001
Authors: Christoph Johann Witzgall, Geraldine S Cheok
Abstract: Four separate laser scans of a wooden box, taken from different vantage points, were examined in a laboratory setting. Visual and numerical registration methods, aimed at aligning the individual scan data with respect to a common frame, were explore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860351

62. Laser Scanning for Construction Metrology
Published: 3/1/2001
Authors: Geraldine S Cheok, William C Stone, Robert R Lipman, Christoph Johann Witzgall, Javier Bernal
Abstract: This paper summarizes work at the National Institute of Standards and Technology (NIST) in the Non-Intrusive Scanning Technologies for Construction Assessment Project. It will briefly describe the initial proof-of-concept phase of this project, the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860748

63. Field Demonstration of Laser Scanning for Excavation Measurement
Published: 10/1/2000
Authors: Geraldine S Cheok, Robert R Lipman, Christoph Johann Witzgall, Javier Bernal, William C Stone
Abstract: The use of a scanning laser to measure terrain changes due to excavation at a construction site is described. The objective at this phase of the project is to develop the tools necessary to measure terrain changes in real-time. This paper focuses o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860744

64. Performance of Precast Concrete Shear Walls
Published: 7/1/2000
Authors: A E Schultz, Geraldine S Cheok, R A Magana
Abstract: An experimental program is undertaken to enhance the knowledge base regarding seismic design of precast concrete shear walls. The emulation design and jointed design philosophies are described, and an idealization of the behavior of precast shear wal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860130

65. Automated Earthmoving Status Determination
Published: 2/28/2000
Authors: William C Stone, Geraldine S Cheok, Robert R Lipman
Abstract: Efforts are underway at the National Institute of Standards and Technology (NIST) to develop automated non-intrusive production measurement systems and procedures for monitoring the status of general earthmoving operations at typical construction sit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860215

66. Ladars for Construction Assessment and Update
Published: 1/1/2000
Authors: Geraldine S Cheok, William C Stone, Robert R Lipman, Christoph Johann Witzgall
Abstract: Work at the National Institute of Standards and Technology (NIST) on laser radar imaging of a construction site is described. The objective of the NIST research is to make measurements required in a construction project quicker and cheaper than curr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860226

67. NIST Construction Automation Program Report No. 4: Non-Intrusive Scanning Technology for Construction Status Determination
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6457
Published: 1/1/2000
Authors: Geraldine S Cheok, Robert R Lipman, Christoph Johann Witzgall, Javier Bernal, William C Stone
Abstract: Approximately 2 % of all construction work must be devoted to manually intensive quality control and tracking of work completion, including operations involving earthmoving and bulk materials handling. Any technology that can reduce this burden and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860236

68. Non-Intrusive Scanning Technology for Construction Assessment
Published: 9/1/1999
Authors: Geraldine S Cheok, William C Stone
Abstract: Work at the National Institute of Standards and Technology on laser radar imaging of a construction site is described. The objective of the research is to make measurements required in a construction project quicker and cheaper than current practice ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860191

69. Summary of the Structural Performance of Single-Family, Wood-Frame Housing
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6224
Published: 9/1/1998
Authors: Charles William Clay Yancey, Geraldine S Cheok, Fahim Sadek, B Mohraz
Abstract: A review of the structural performance of single-family, wood-frame houses is presented. The performance of these structures in selected earthquakes and hurricanes is summarized. In general, wood-frame houses performed well with relatively few inst ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860154

70. Seismic Performance of Masonry Walls With Bed Joint Reinforcement
Published: 7/1/1998
Authors: A E Schultz, R S Hutchinson, Geraldine S Cheok
Abstract: In-plane cyclic load tests of partially grouted concrete masonry shear walls with bed joint reinforcement are presented. Specimen design and construction, and simulated seismic testing procedures, are summarized. Lateral force resistance mechanisms a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860131



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