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Author: nathanael heckert
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Displaying records 1 to 10 of 34 records.
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1. A Bayesian Quantitative Nondestructive Evaluation (QNDE) Approach to Estimating Remaining Life of Aging Pressure Vessels and Piping
Published: 1/1/2013
Authors: Jeffrey T Fong, William F Guthrie, James J Filliben, Nathanael A Heckert
Abstract: In this paper, we use a Bayesian quantitative nondestructive evaluation (QNDE) approach to estimating the remaining life of aging structures and components. Our approach depends on in-situ NDE measurements of detectable crack lengths and crack g ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913221

2. A Design-of-Experiments Plug-In for Estimating Uncertainties in Finite Element Simulations
Published: 5/18/2009
Authors: Jeffrey T Fong, Roland deWit, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert
Abstract: The objective of this paper is to introduce an economical and user-friendly technique for estimating a specific type of finite element simulation uncertainties, or, "error bars," for a class of mathematical models, of which no closed-form o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902335

3. A Risk-Uncertainty Formula Accounting for Uncertainties of Failure Probability and Consequence in a Nuclear Powerplant
Published: 7/20/2010
Authors: Jeffrey T Fong, Stephen R Gosselin, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert, Robert E Chapman
Abstract: This paper is a continuation of a recent ASME Conference paper entitled "Design of a Python-Based Plug-in for Bench-marking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data" (PVP2009-77974). In that paper, which was co-authore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905670

4. A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Applications
Series: Special Publication (NIST SP)
Report Number: 800-22
Published: 10/1/2000
Authors: Andrew L Rukhin, Juan Soto, James R Nechvatal, Miles E. Smid, Elaine B Barker, Stefan D Leigh, M Levenson, M Vangel, D L. Banks, Nathanael A Heckert, James F Dray Jr, S C. Vo
Abstract: This paper discusses some aspects of selecting and testing random and pseudorandom number generators. The outputs of such generators may be used in many cryptographic applications, such as the generation of key material. Generators suitable for use ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151222

5. A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Applications
Series: Special Publication (NIST SP)
Report Number: 800-22rev1
Published: 9/16/2010
Authors: Lawrence E Bassham, Andrew L Rukhin, Juan Soto, James R Nechvatal, Miles E. Smid, Stefan D Leigh, M Levenson, M Vangel, Nathanael A Heckert, D L. Banks
Abstract: This paper discusses some aspects of selecting and testing random and pseudorandom number generators. The outputs of such generators may be used in many cryptographic applications, such as the generation of key material. Generators suitable for use i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906762

6. A Web-Based Data Analysis Methodology for Estimating Reliability of Weld Flaw Detection, Location, and Sizing
Published: 7/27/2008
Authors: Jeffrey T Fong, Owen F Hedden, James J Filliben, Nathanael A Heckert
Abstract: Recent advances in computer technology, intemet communication networks, and fmite element modeling and analysis capability have made it feasible for engineers to accelerate the feedback loop between the field inspectors of a structure or component fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152099

7. AN ECONOMICS-BASED INTELLIGENCE (EI) TOOL FOR PRESSURE VESSEL & PIPING (PVP) FAILURE CONSEQUENCE ESTIMATION
Published: 7/20/2010
Authors: Robert E Chapman, Jeffrey T Fong, David T Butry, Douglas S Thomas, James J Filliben, Nathanael A Heckert
Abstract: This paper is built around ASTM E 2506, Standard Guide for Developing a Cost-Effective Risk Mitigation Plan for New and Existing Constructed Facilities. E 2506 establishes a three-step protocol--perform risk assessment, specify combinations of risk ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905671

8. An Interlaboratory Investigation of the Effect of Material Granularity and Sample Processing on Measurement Variability: Nutritional Elements in Cereals
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7927
Published: 5/9/2013
Authors: Katrice A Lippa, Laura J Wood, Stefan D Leigh, Nathanael A Heckert
Abstract: This interlaboratory study was uniquely designed to determine the effects of material granularity and sample processing techniques on the measurement variability (i.e. precision) of nutritional elements in various cereal materials. Participants w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911835

9. Analysis of Deamidation Artifacts Induced by Microwave-Assisted Tryptic Digestion of a Monoclonal Antibody
Published: 7/31/2014
Authors: Catherine A Formolo, Nathanael A Heckert, Karen W Phinney
Abstract: The thorough characterization of biopharmaceuticals is essential for ensuring their quality and safety, since many potential variations can cause changes to a drug‰s properties that may be detrimental to the patient. Prior to approval and release, p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914894

10. Analyzing a Co-Polymer Aramid Fiber for Use in Soft Body Armor
Published: 10/25/2013
Authors: Walter G McDonough, Jae Hyun Kim, Nathanael A Heckert, Amanda Lattam Forster, Scott A Wight, Joy P Dunkers, Gale Antrus Holmes
Abstract: Since the well-publicized failure of body armor used by a police officer, it has become imperative that the long-term properties and performance of new fibers being considered for use be understood. The range of interest is from the molecular proper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914414



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