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Displaying 101 - 125 of 136

Uncertainty Estimate of Charpy Data Using a 5-factor 8-run Design of Experiments

July 27, 2008
Author(s)
Charles G. Interrante, Jeffrey Fong, James J. Filliben, N. Alan Heckert
Scatter in laboratory data with duplicates on Charpy impact tests is analyzed by identifying several sources of variability such as temperature, manganese sulfide, initial strain, mis-orientation, and notch radius in order to estimate the predictive 95%

Methods for Quantifying and Characterizing Errors in Pixel-Based 3D Rendering

July 1, 2008
Author(s)
John G. Hagedorn, Judith E. Terrill, Adele P. Peskin, James J. Filliben
We present methods for measuring errors in the rendering of three-dimensional points, line segments, and polygons in pixel-based computer graphics systems. We present error metrics for each of these three cases. These methods are applied to rendering with

On tuning the design of an evolutionary algorithm for machining optimization problem

May 9, 2007
Author(s)
Jean-Louis Vigouroux, Sebti Foufou, Laurent Deshayes, James J. Filliben, Lawrence A. Welsch, Alkan Donmez
In this paper, a methodology for tuning the design of an evolutionary algorithm (EA) is presented. An EA for solving machining optimization probfems having highly non-linear constraints and uncertainties is studied. A conventional turning optimization

Development of the NIST Rocky Flats Soil Standard

March 29, 2007
Author(s)
Svetlana Nour, James J. Filliben, Kenneth G. Inn
The National Institute of Standards and Technology (NIST) Rocky Flats Soil-II Standard Reference Material (SRM) is being certified through a statistical analysis of results from an interlaboratory comparison of 14 laboratories from 4 countries. The mean

Verification of a Gas Mask Calibrant

February 19, 2007
Author(s)
Robert A. Fletcher, Jiann C. Yang, George W. Mulholland, R L. King, Michael R. Winchester, D Klinedinst, Jennifer R. Verkouteren, Thomas G. Cleary, David Buckingham, James J. Filliben

The Limits of Image-Based Optical Metrology

March 1, 2006
Author(s)
Richard M. Silver, Bryan M. Barnes, Ravikiran Attota, Jay S. Jun, James J. Filliben, Juan Soto, Michael T. Stocker, P Lipscomb, Egon Marx, Heather J. Patrick, Ronald G. Dixson, Robert D. Larrabee
An overview of the challenges encountered in imaging device-sized features using optical techniques recently developed in our laboratories is presented in this paper. We have developed a set of techniques we refer to as scatterfield microscopy which allows

Uncertainty in Finite Element Modeling and Failure Analysis: A Metrology-based Approach

February 1, 2006
Author(s)
Jeffrey Fong, James J. Filliben, Roland deWit, Richard J. Fields, Barry Bernstein, Pedro V. Marcal
In this paper, we first review the impact of the powerful finite element method (FEM) in structural engineering, and then address the shortcomings of FEM as a tool for risk-based decision making and incomplete-data-based failure analysis. To illustrate the

High Throughput Measurement of Peel of a Pressure Sensitive Adhesive

January 1, 2006
Author(s)
P M. McGuiggan, James J. Filliben
The peel force of a pressure sensitive adhesive (PSA) tape is measured on a surface that varied linearly in temperature. As the tape is peeled from the surface, the adhesive is peeled from a surface at a different temperature. The temperature can be

Statistical Approaches in the NIST World Trade Center Analysis

October 1, 2005
Author(s)
James J. Filliben
The Federal Building and Fire Safety Investigation of the World Trade Center Disaster is currently essentially completed. The pre-collapse progression was extremely complicated, with structural, thermal, dynamic and stochastic interdependencies across time

Fire Tests of Single Office Workstations. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-5C) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
Thomas J. Ohlemiller, George W. Mulholland, Skandakumar H. Abeyesekere, James J. Filliben, Richard G. Gann
Reconstruction of the fires that occurred in the World Trade Center (WTC) 1, 2, and 7 on September 11. 2001, relied heavily on computer simulations because examination of the post-fire premises was not possible and the information from eyewitness accounts

Hurricane Damage Prediction Model for Residential Structures

November 1, 2004
Author(s)
Emil Simiu, J P. Pinelli, C Subramanian, L. Zhang, A Cope, K Gurley, James J. Filliben, S Hamid
This paper reports progress in the development of a practical probabilistic model for the estimation of expected annual damage induced by hurricane winds in residential structures. The estimation of the damage is accomplished in several steps. First, basic

Significant Parameters in the Optimization of MALDI-TOF-MS

February 1, 2004
Author(s)
S Wetzel, Kathleen M. Flynn, James J. Filliben
One of the most significant issues in any analytical technique is optimization. Optimization and calibration are key factors in quantitation. In matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS), one of the

A Hurricane Damage Prediction Model for Residential Structures

July 1, 2003
Author(s)
A Cope, K Gurley, James J. Filliben, Emil Simiu, J P. Pinelli, C Subramanian, L. Zhang, S Hamid
The focus of this paper is the development of a probabilistic model for the prediction of structural damage due to hurricane winds in the state of Florida. This is a necessary component to a model currently under development to predict annualized insurable

Wind Speeds in ASCE 7 Standard Peak-Gust Map: Assessment

April 1, 2003
Author(s)
Emil Simiu, R Wilcox, Fahim Sadek, James J. Filliben
The ASCE 7 peak-gust map division of the conterminous United States into two adjacent wind speed zones does not reflect correctly the country's differentiated extreme wind climate. The methodology used to develop the map averages out real climatological

Wind Speeds in the ASCE 7 Standard Peak-Gust Map: An Assessment

April 1, 2003
Author(s)
Emil Simiu, R Wilcox, Fahim Sadek, James J. Filliben
The ASCE 7 peak-gust map division of the conterminous United States into two adjacent wind speed zones does not reflect correctly the country's differentiated extreme wind climate. The methodology used to develop the map averages out real climatological
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