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Displaying 31376 - 31400 of 74220

NIST Program to Support Testing and Evaluation of Trace Explosives Detection

September 1, 2007

Author(s)

R M. Verkouteren, John G. Gillen, Jennifer R. Verkouteren, Robert A. Fletcher, Eric S. Windsor, W.J. Smith

NIST Recommended Practice Guide: Computing Uncertainty for Charpy Impact Machine Test Results

September 1, 2007

Author(s)

Jolene Splett, Christopher N. McCowan, Hariharan K. Iyer, Chih-Ming Wang

The purpose of this recommended practice guide is to demonstrate how to determine the uncertainty associated with mean absorbed energy of specimens tested on a Charpy impact machine. We assume that the Charpy machine has successfully met the requirements

NIST Speaker Recognition Evaluations Utilizing the Mixer Corpora ? 2004, 2005, 2006

September 1, 2007

Author(s)

Mark A. Przybocki, Alvin F. Martin, A N. Le

NIST has coordinated annual evaluations of text-independent speaker recognition from 1996 to 2006. This paper discusses the last three of these, which utilized conversational speech data from the Mixer Corpora recently collected by the Linguistic Data

NIST Workshop on Materials Test Procedures for Hydrogen Pipelines

September 1, 2007

Author(s)

Thomas A. Siewert, Joseph D. McColskey, Richard E. Ricker

The Materials Reliability and Metallurgy Divisions have expanded their efforts to advance the technology for the construction, repair, and inspection of pipelines. One key factor is to identify and prioritize the research needs of the pipeline community

NIST Workshop on Materials Test Procedures for Hydrogen Pipelines:The proceedings of a workshop held August 21-22, 2007 at the National Institute of Standards and Technology, Boulder, CO 80305

September 1, 2007

Author(s)

Thomas A. Siewert, J. David McColskey, Richard E. Ricker

Numerical Micromagnetics: Finite Difference Methods

September 1, 2007

Author(s)

J. Miltat, Michael J. Donahue

Micromagnetics is based on the one hand on a continuum approximation of exchange interactions, including boundary conditions, on the other hand on Maxwell equations in the non-propagative (static) limit for the evaluation of the demagnetizing field. The

Numerical Study of Thermal Decomposition and Pressure Generation in Charring Solids Undergoing Opposed-Flow Flame Spread.

September 1, 2007

Author(s)

W Park, A A. Atreya, Howard R. Baum

On the Use of a Firebrand Generator to Investigate the Ignition of Structures in Wildland-Urban Interface (WUI) Fires.

September 1, 2007

Author(s)

Samuel L. Manzello, John R. Shields, Jiann C. Yang, Yoshihiko Hayashi, Daisaku Nii

An experimental apparatus has been constructed to generate a controlled and repeatable size and mass distribution of glowing firebrands. The present study reports on a series of experiments conducted in order to characterize the performance of this

Optical and Structural Study of GaN Nanowires Grown by Catalyst Free MBE: (1) Near Band Edge Luminescence and Strain Effects

September 1, 2007

Author(s)

Lawrence H. Robins, Kristine A. Bertness, J M. Barker, Norman A. Sanford, John B. Schlager

Optical and Structural Study of GaN Nanowires Grown by Catalyst Free MBE: (II) Defect Related Luminescence and Electron Beam Irradiation Effects

September 1, 2007

Author(s)

Lawrence H. Robins, Kristine A. Bertness, J M. Barker, Norman A. Sanford, J B. Schlagear

Photophysical Properties of Ricin

September 1, 2007

Author(s)

Adolfas K. Gaigalas, Kenneth D. Cole, S Bykadi, Lili Wang, Paul C. DeRose

Precise AFM Cantilever Spring Constant Calibration Using a Reference Cantilever Array

September 1, 2007

Author(s)

Richard S. Gates, M G. Reitsma

A new method of calibrating the stiffness of atomic force microscope (AFM) cantilevers is demonstrated using a unique array of uniform microfabricated reference cantilevers. A series of force-distance curves were obtained using a commercial AFM test

Preparation and Characterization of Standard Reference Material 3276 Carrot Extract in Oil

September 1, 2007

Author(s)

Katherine E. Sharpless, Jeanice M. Brown Thomas, David L. Duewer, K. Putzbach, Catherine A. Rimmer, Lane C. Sander, Michele M. Schantz, Stephen A. Wise, T. Yarita, James H. Yen

Prototype Reference Cantilevers for AFM Lateral Force Measurement

September 1, 2007

Author(s)

Richard S. Gates, M G. Reitsma

Reconstructing the Station Nightclub Fire: Computer Modeling of the Fire Growth and Spread

September 1, 2007

Author(s)

Nelson P. Bryner, Daniel M. Madrzykowski, William L. Grosshandler

On February 20, 2003, during a band performance, pyrotechnics ignited foam insulation lining the walls and ceiling of the platform that was being used as a stage in The Station Nightclub, Rhode Island, USA. The fire spread quickly along the foam lined

Reconstructing the Station Nightclub Fire: Materials Testing and Small-Scale Experiments.

September 1, 2007

Author(s)

Nelson P. Bryner, Daniel M. Madrzykowski, William L. Grosshandler

On February 20, 2003, during a band performance, pyrotechnics ignited foam insulation lining the walls and ceiling of the platform that was being used as a stage in The Station nightclub, Rhode Island, USA. The fire spread quickly along the foam lined

Research Agenda for the Next Generation of Performance-Based Design Tools.

September 1, 2007

Author(s)

William L. Grosshandler

SAMATE and Evaluating Static Analysis Tools

September 1, 2007

Author(s)

Paul E. Black

We give some background on the Software Assurance Metrics And Tool Evaluation (SAMATE) project and our decision to work on static source code security analyzers. We give our experience bringing government, vendors, and users together to develop a

Science based Information Metrology for Engineering Informatics

September 1, 2007

Author(s)

Sudarsan Rachuri

Engineering informatics is the discipline of creating, codifying (structure and behavior that is syntax and semantics), exchanging (interactions and sharing), processing (decision making), storing and retrieving (archive and access) the digital objects

Simulation Modeling of Emergency Response Facility Based on Software Product Line Technology

September 1, 2007

Author(s)

Guodong Shao, Yung-Tsun T. Lee

The development of a simulation model has always been a challenging task; it is time-consuming and requires expertise. Furthermore, most customized simulation models need to be developed from scratch. This paper proposes a more effective, reusable solution

Spectrally resolved optical frequency comb from a self- referenced 5 GHz femtosecond laser

September 1, 2007

Author(s)

Albrecht Bartels, Raphael Gebs, Matthew S. Kirchner, Scott A. Diddams

We report a mode-locked Ti:sapphire femtosecond laser with 5 GHz repetition rate and 1.15 W of average power. Spectral broadening of the 24 fs pulses in a microstructured fiber yields an octave-spanning spectrum and permits self-referencing and active

Standard Reference Materials for Foods and Dietary Supplements

September 1, 2007

Author(s)

Katherine E. Sharpless, Jeanice M. Brown Thomas, Steven J. Christopher, Robert R. Greenberg, Lane C. Sander, Michele M. Schantz, Michael J. Welch, Stephen A. Wise

Standardized Data Exchange of CAD Models with Design Intent

September 1, 2007

Author(s)

Junhwan Kim, Mike Pratt, Raj G. Iyer, Ram D. Sriram

Modern CAD systems generate feature-based product shape models with parameterization and constraints. Until recently, standards for CAD data exchange among different CAD systems were restricted to the exchange of pure shape information. These standards

Structure and Extinction of Low Strain Rate Non-Premixed Flames by an Agent in Microgravity (NISTIR 7445)

September 1, 2007

Author(s)

Anthony P. Hamins, Matthew F. Bundy, C B. Oh, Stephen P. Fuss, J. Logue

This final report describes the study that has been supported through the National Aeronautics and Space Administration (NASA) microgravity grants program from February 2004 through March 2007. This work was a continuation of a NASA microgravity grant that

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