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Displaying 28826 - 28850 of 73830

Energy Efficient Lighting - Solid State Luminaires (Handbook 150-1A)

February 27, 2009
Author(s)
C Cameron Miller, Lawrence I. Knab, Ambler Thompson, Jon M. Crickenberger
NIST Handbook 150-1A presents technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program (NVLAP) Energy Efficient Lighting/Solid State Lighting program. It is intended for

Evaluation of Image Quality of Thermal Imagers used by the Fire Service

February 27, 2009
Author(s)
Francine K. Amon, Andrew J. Lock
This document reports on the test results of an evaluation of the image quality of thermal imaging cameras used by the fire service. The test methods used were consistent with the image quality test methods included in Draft National Fire Protection

Results from a Full-scale Smoke Alarm Sensitivity Study

February 27, 2009
Author(s)
Thomas G. Cleary
A series of 24 full-scale experiments was conducted during the summer of 2008 to examine the effects of alarm type (photoelectric, ionization, and dual sensor), alarm location, fabric type (100 % cotton and 100 % polyester), polyurethane foam density

Evaluation of Image Quality of Thermal Imagers used by the Fire Service

February 26, 2009
Author(s)
Francine K. Amon, Andrew J. Lock
This document reports on the test results of an evaluation of the image quality of thermal imaging cameras used by the fire service. The test methods used were based on the test methods included in Draft NFPA 1801 Standard on Thermal Imagers for the Fire

Surface plasmon resonance imaging of cells and surface-associated fibronectin

February 26, 2009
Author(s)
Alexander W. Peterson, Michael W. Halter, Alessandro Tona, Kiran Bhadriraju, Anne L. Plant
Background A critical challenge in cell biology is quantifying the interactions of cells with their extracellular matrix (ECM) environment and the active remodeling by cells of their ECM. Fluorescence microscopy is a commonly employed technique for

ATP hydrolysis and DNA binding confer thermostability on the MCM helicase

February 25, 2009
Author(s)
Nozomi Sakakibara, Frederick P. Schwarz, Zvi Kelman
Minichromosome maintenance (MCM) helicase is the replicative helicase in archaea. The enzyme utilizes the energy derived from ATP hydrolysis to translocate along one strand of the DNA and unwind the complementary strand. Here, the effect of ATP and DNA on

Competition Between Self-Assembly and Surface Adsorption

February 25, 2009
Author(s)
Jacek Dudowicz, Jack F. Douglas, Karl Freed
We investigate a minimal equilibrium polymerization model of the general competition between self-assembly on a boundary and in solution that arises when an assembling system is near a boundary. Adsorption generally occurs upon cooling, but assembly

Controlled Formation and Resistivity Scaling of Nickel Silicide Nanolines

February 25, 2009
Author(s)
Bin Li, Zhiquan Luo, Paul S. Ho, Li Shi, Lew Rabenberg, JiPing Zhou, Richard A. Allen, Michael W. Cresswell
We demonstrate a top-down method to fabricate nickel mono-silicide (NiSi) nanolines with smooth side walls and linewidths down to 15 nm. Four probe electrical measurements revealed that the electrical resistivity at room temperature remained constant as

Descriptive Metadata Requirements for Long-term Archival of Digital Product Models

February 25, 2009
Author(s)
Joshua Lubell, Ben Kassel, Sudarsan Rachuri
Digital product engineering information comes from a variety of applications ranging from computer-aided design, engineering, and manufacturing software to product data and lifecycle management systems. As the volume of digital engineering data increases

Randomized Hashing for Digital Signatures

February 25, 2009
Author(s)
Quynh H. Dang
NIST-approved digital signature algorithms require the use of an approved cryptographic hash function in the generation and verification of signatures. Approved cryptographic hash functions and digital signature algorithms can be found in FIPS 180-3

2039: A Day in the Life of a Usability Engineer

February 24, 2009
Author(s)
Theresa O'Connell, E Murphy, R Roske-Shelton
As we approach the end of the fourth decade of the twenty-first century, intelligent agents will handle most of the time-consuming drudge work of usability engineering, freeing usability engineers (UEs) to focus on the mental work of analysis and usability

Manufacturing Interoperability Program, a Synopsis

February 24, 2009
Author(s)
Sharon J. Kemmerer
Started in 2005, the Manufacturing Interoperability Program has seen an investment of roughly 25-30 full-time staff who have researched, developed, and deployed standards, tools, techniques, and testing environments --- helping manufacturing enterprise

Roles of CIPM and IAPWS Standards for the Density of Water

February 24, 2009
Author(s)
Allan H. Harvey, R Span, K Fujii, M. Tanaka, Richard Davis
This contribution discusses the relative roles of the standard formulation for the density of liquid water recommended for metrology by the International Committee for Weights and Measures (CIPM) and the thermodynamic property formulation adopted by the

FiPy: PDEs in Python

February 23, 2009
Author(s)
Jonathan E. Guyer, Daniel Wheeler, James A. Warren
Partial differential equations (PDEs) are ubiquitous to the mathematical description of physical phenomena. They describe the relationships between functions of more than one independent variable and partial derivatives with respect to those variables
Displaying 28826 - 28850 of 73830
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