An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
In this paper, we describe the mobile robot and sensor research and development toward assistive devices ongoing at the National Institute of Standards and
Gavin W. O\'Brien, Robert D. Snelick, Lynne S. Rosenthal
The discipline of software engineering establishes a set of principles for designing and developing software. Organizations have applied these principles to
Lingyu Wang, Tania Islam, Tao Long, Anoop Singhal, Sushil Jajodia
To protect critical resources in today's networked environments, it is desirable to quantify the likelihood of potential multi-step attacks that combine
Environmental regulations impacting the electronics industry are driving the need for new data management systems to track environmental data including material
We introduce an algorithm for maximizing utility through congestion control and random allocation of routes to users. The allocation is defined by a probability
A technique has been developed for noninvasive monitoring of ion energy and ion current in plasma reactors. The technique relies on measurements of the applied
The effect of radio-frequency (rf) bias on electron density in an inductively coupled plasma reactor was measured using a wave cutoff probe, in Ar, CF4, and Ar
Correct data exchange is critical for ensuring reliable healthcare systems. Standards based systems are the foundation for achieving this goal. However
Alternating-current (AC) driven high-power LEDs are available and used in SSL products. AC LEDs operate directly from a mains supply and thus have advantages in
The performance of a finned tube heat exchanger is strongly affected by the distribution of the air that passes through it. The air velocity distribution for
The ability to create random models of real networks is useful for understanding the interactions of the networks. Several researchers have proposed modeling of
Nathan R. Newbury, Ian R. Coddington, William C. Swann
Coherent, broadband fiber lasers produce pulse trains with <1 femtosecond relative timing uncertainty and <1 mHz relative frequency uncertainty. These sources
Developing mechanisms for the efficient exchange of information between simulations and other manufacturing tools is a critical problem today. For many areas of
Kevin Coakley, Dominic F. Vecchia, Daniel S. Hussey
In a fuel cell, water is formed as a by-product of the reaction between hydrogen and oxygen. As a neutron beam passes through a fuel cell, it can undergo s-wave
The goniospectrometer at the National Institute of Standards and Technology (NIST) can measure the spectral reflectance of colored samples over a wide range of
Ulf Griesmann, Quandou (. Wang, Nicolas Laurenchet, Johannes A. Soons
Calibration procedures for optical reference flats of phase-shifting interferometers (three-flat tests) are critically important if flatness measurements with
Nicos Martys, Didier Lootens, William L. George, Steven G. Satterfield, Pascal Hebraud
Spatial-temporal correlations in the startup-up flow of colloidal suspensions composed of attractive spherical particles under static and shear conditions are
Didier Lootens, Nicos Martys, William L. George, Steven G. Satterfield, Pascal Hebraud
Results comparing experiments on a model system of mono-disperse silica-particles with the numerical simulation of highly concentrated suspension of spherical
John M. Treinen, William E. Luecke, Joseph D. McColskey, Philippe P. Darcis, Yong-Yi Wang
While steel is generally treated as being isotropic, tensile and compression tests in the different pipe orientations for API X100 grade pipeline steel show
Ronald C. Wittmann, Michael H. Francis, Randy Direen
We discuss recent measurements performed at the National Institute of Standards and Technology (NIST) that were used to characterize the incident fields within
The operation of modern buildings can support a vast amount of static and real-time data. Static information such as building schematics is vital for security
High-megawatt Power Conditioning Systems (PCSs) are required to convert the low-voltage produced by fuel cell modules in central station scale plants to the
Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus, Bryan C. Waltrip, Thomas L. Nelson
We are developing a quantum-based 60 Hz power standard that exploits the precision sinusoidal reference voltages synthesized by programmable Josephson voltage
Zhenyu Huang, Bogdan Kasztenny, Vahid Madani, Ken Martin, Sakis Meliopoulos, Damir Novosel, Gerard N. Stenbakken
Abstract--After two decades of phasor network deployment, phasor measurements are now available at many major substations and power plants. The North American
Regis Landim, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs
We investigate the dominant frequency-dependent systematic error signals (SES) in the ac Josephson voltage standard. We describe our error measurement technique
This paper proposes a framework for measuring the vulnerability of individual hosts based on current and historical operational data for vulnerabilities and
Sherri Condon, Jon Phillips, Christy Doran, John Aberdeen, Dan Parvaz, Beatrice Oshika, Gregory A. Sanders, Craig I. Schlenoff
Over the past five years, the Defense Advanced Research Projects Agency (DARPA) has funded development of speech translation systems for tactical applications