U.S. flag

An official website of the United States government

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.

Search Publications

NIST Authors in Bold

Displaying 46101 - 46125 of 74176

An Introduction to IPsec (Internet Protocol Security)

March 30, 2001
Author(s)
Sheila E. Frankel
IPsec (Internet Protocol Security) is an attempt to utilize cryptographic techniques in a global solution to the problem of Internet security. Rather than requiring each email program or Web browser to implement its own security mechanisms, IPsec involves

Users' Guide to the NIST-High-Voltage Capacitance Ratio Bridge

March 28, 2001
Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
This TechNote has been written as a guide to the operation of and applications for the NIST Capacitor Ratio Bridge (CRB). The theory, design, and operating principles of the CRB, sources of measurement error, and principal applications are discussed in

IEEE Transactions on Antennas and Propagation

March 27, 2001
Author(s)
Richard G. Geyer, J. R. Wait
A general Sommerfeld integral formulation is given for the electromagnetic (EM) fields of an oscillating vertical Magnetic or electric dipole over an electrically inhomogeneous thin sheet. The electrical properties of the sheet are characterized by a

Dielectric Properties of Materials for Packaging from 1 to 60 GHz

March 26, 2001
Author(s)
Y. Kantor, Michael D. Janezic, Pavel Kabos, Billy F. Riddle, James R. Baker-Jarvis
Measurements of the complex permittivity of commonly used packaging materials, as a function of temperature, in the frequency range of 1-60 GHz are presented. The results were obtained using a re-entrant cavity, a split cylinder cavity, a split post

Sublethal Effects of Smoke on Survival and Health

March 26, 2001
Author(s)
Richard G. Gann, Jason D. Averill, Kathryn M. Butler, Walter W. Jones, George W. Mulholland, J L. Neviaser, Thomas J. Ohlemiller, Richard D. Peacock, Paul A. Reneke, J R. Hall

Apparatus for Light Scattering Studies of Smoke Particles

March 25, 2001
Author(s)
George W. Mulholland, D W. Weinert
A facility for measuring the light scattered by smokes as a function of the scattering angle and linear polarization has been developed. By using monosize polystyrene calibration particles and filter collection for gravimeteric measurement, we are able for

Particle Image Velocimetry in Flickering Methane/Air Diffusion Flames

March 25, 2001
Author(s)
G Papadopoulos, Rodney A. Bryant, William M. Pitts
Phase-resolved measurements of the velocity field in acoustically forced, flickering laminar co-flowing methane/air diffusion flames have been made. Identical flames have been studied extensively in the past in order to characterize the effects of the

Thermal Agent Extinguishment of Two Types of Diffusion Flames

March 25, 2001
Author(s)
William M. Pitts, Rodney A. Bryant, Jiann C. Yang
The extinguishment of diffusion flames on two types of burners-an opposed-flow Tsuji burner and an axisymmetric burner with a surrounding coflow-by thermal agents has been investigated. Thermal agents are those that act primarily by extracting heat and

The 103rd Annual Meeting of the American Ceramic Society

March 19, 2001
Author(s)
Winnie K. Wong-Ng
The American Ceramic Society 103rd annual meeting & exposition took place from April 22-25, 2001, at the Indiana Convention Center and RCA Dome of Indianapolis. The meeting was well attended - with approximately 2700 attendees including many from other

Toxic Hazard of Building Products and Furnishings

March 14, 2001
Author(s)
Richard G. Gann
Since it was recognized nearly 30 years ago that most fire victims succumb to smoke, there has been a broad effort to include consideration of smoke toxicity in fire standards and code provisions. Research has made great advances in this area, progressing

Nanomechanical Measurements of Polymeric Systems

March 13, 2001
Author(s)
Mark R. VanLandingham, Christopher C. White, Xiaohong Gu, Tinh Nguyen
Durability, in terms of service life, is often related to the failure due to service conditions of an unacceptable percentage of a product population. In many cases, this percentage is much less than 1 %, and thus the factors affecting early times-to

Phase Diagrams of High Tc Superconductors

March 13, 2001
Author(s)
Winnie K. Wong-Ng
The aim of this chapter is to provide selected experimental phase diagrams of high Tc superconductors to represent various active systems of research. Among current systems, the BaO-Y 2O 3-CuO (BYC), BaO-R 2O 3-CuO (BRC), and BSCCO systems have been

Calibration of an Optical Sensor

March 9, 2001
Author(s)
J H. Daruwalla, Nicholas Dagalakis
An inexpensive optical reflective sensor was evaluated for possible use as a precision proximity sensor. The output signal of the sensor was measured as a function of the distance of a flat reflecting surface from the front glass window of the sensor. The

The Role of Knowledge in Next-generation Product Development Systems

March 6, 2001
Author(s)
Simon Szykman, Ram D. Sriram, William Regli
Information technology has played an increasingly important role in engineering product development. Its influence over the past decade has been accelerating and its impact in the coming decade will undoubtedly be immense. This paper surveys several

Toward Next-Generation Construction Machines

March 4, 2001
Author(s)
Roger V. Bostelman, James S. Albus, William C. Stone
Construction equipment is typically massive and operated manually with minimal use of sensors or computers for measurement or control. Research in the Intelligent Systems and Structures Divisions at the National Institute of Standards and Technology has
Displaying 46101 - 46125 of 74176
Was this page helpful?