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1. Calibration of a Computer Assisted Orthopedic Hip Surgery Phantom
Published: 11/4/2008
Authors: Daniel S Sawyer, Nicholas G Dagalakis, Craig M Shakarji, Yong Sik Kim
Abstract: Orthopedic surgeons have identified a need for calibration artifacts (phantoms) to establish the traceability (to the SI unit of length) of measurements performed with Computer Assisted Orthopedic Surgery (CAOS) systems. These phantoms must be light ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824707

2. Choosing test positions for laser tracker evaluation and future Standards development
Published: 7/15/2010
Authors: Balasubramanian Muralikrishnan, Daniel S Sawyer, Christopher J Blackburn, Steven David Phillips, Craig M Shakarji, Ed Morse, Robert Bridges
Abstract: A working group within the ISO TC 213 committee is developing a draft document [11] for evaluating the performance of laser trackers. The ASME B89.4.19 Standard [1] and the draft VDI/VDE 2617 part 10 [2] describe some useful tests that are incorporat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905959

3. Design and Fabrication of an Operating Room Computer Assisted Orthopaedic Hip Surgery Artifact
Published: 8/17/2007
Authors: Nicholas G Dagalakis, Yong Sik Kim, Daniel S Sawyer, Craig M Shakarji
Abstract: Hundreds of thousands of joint arthroplasty operations are performed throughout the world every year providing life saving relief from pain and return of mobility to the majority of the individuals who have this treatment. Clinical studies have show ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823614

4. Development of Tools for Measuring the Performance of Computer Assisted Orthopaedic Hip Surgery Systems
Published: 12/28/2007
Authors: Nicholas G Dagalakis, Yong Sik Kim, Daniel S Sawyer, Craig M Shakarji
Abstract: In the late seventies a sensor was invented, which could track the movement of athlete body parts.  In the early eighties an improved version of this sensor was introduced, by a group of NIST researchers, for the calibration and the performance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823612

5. Dimensional measurement traceability of 3D imaging data
Published: 1/19/2009
Authors: Steven David Phillips, Craig M Shakarji, Michael Krystek, K Summerhays
Abstract: This paper discusses the concept of metrological traceability to the SI unit of length, the meter. We describe how metrological traceability is realized, give a recent example of the standardization of laser trackers, and discuss progress and challe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900252

6. Evaluating Coordinate Measuring Machine Software Geometry Uncertainties Using National and International Standards
Published: 1/1/2004
Authors: Craig M Shakarji, J D Raffaldi
Abstract: In coordinate metrology, evaluating task specific measurement uncertainty can be difficult, a problem which prompted the current development of several related standards at the national and international levels. Software that processes coordinate dat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822115

7. Evaluation of One- and Two-Sided Geometric Fitting Algorithms in Industrial Software
Published: 9/1/2003
Author: Craig M Shakarji
Abstract: Recent work in testing and comparing maximum-inscribed, minimum-circumscribed, and minimum-zone (Chebyshev) fitting algorithms indicates that serious problems can exist in present commercial software packages for coordinate measuring machines. Effort ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822081

8. Fitting Weighted Total Least-Squares Planes and Parallel Planes to Support Tolerancing Standards
Published: 10/19/2012
Authors: Craig M Shakarji, Vijay Srinivasan
Abstract: We present elegant algorithms for fitting a plane, two parallel planes (corresponding to a slot or a slab) or many parallel planes in a total (orthogonal) least-squares sense to coordinate data that is weighted. Each of these problems is reduced to a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911379

9. Information Technology Measurement and Testing Activities at NIST
Series: Journal of Research (NIST JRES)
Published: 1/1/2001
Authors: Michael D Hogan, Lisa J Carnahan, Robert J. Carpenter, David W Flater, James E. Fowler, Simon Paul Frechette, M M Gray, L Arnold Johnson, R. McCabe, Douglas C Montgomery, Shirley M. Radack, R Rosenthal, Craig M Shakarji
Abstract: Our high technology society continues to rely more and more upon sophisticated measurements, technical standards, and associated testing activities. This was true for the industrial society of the 20th century and remains true for the information so ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150696

10. Information Technology Measurement and Testing Activities at NIST
Published: 2/1/2001
Authors: David W Flater, James E. Fowler, Simon Paul Frechette, Craig M Shakarji, Michael D Hogan, Shirley M. Radack, Douglas C Montgomery, L Johnson, R Rosenthal, R Mccabe, R Carpenter, Lisa J Carnahan, M M Gray
Abstract: Our high technology society continues to rely more and more upon sophisticated measurements, technical standards, and associated testing activities. This was true for the industrial society of the 20th century and remains true for the information soc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821635



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