NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 49826 - 49850 of 73697

A Complete Multimode Equivalent-Circuit Theory for Electrical Design

June 22, 1999
Author(s)
Dylan F. Williams, L. A. Hayden, Roger Marks
This work presents a complete equivalent-circuit theory for lossy multimode transmission lines. Its voltages and currents are based on general linear combinations of standard normalized modal voltages and currents. The theory includes new expressions for

Measurement Services for Optoelectronics at NIST

June 16, 1999
Author(s)
Sally S. Bruce
The National Institute of Standards and Technololgy (NIST) offers a variety of hundreds of measurement services to its customers as a part of it's core mission. These services include reference data, reference materials, and physical measurements and

Status Report on the Development of the Interoperable MPI Specification

June 15, 1999
Author(s)
William L. George, John G. Hagedorn, J E. Devaney
An industry lead effort to create a protocol for the interoperation of MPI (Message Passing Interface) implementations has been ongoing since March of 1997. Meeting have been held several times per year with many implementers of MPI participating to help

The Apache/Linux Measurement Toolkit (ALMT) Using NIST-Developed Chip

June 15, 1999
Author(s)
D C. Tang, J H. Lin
This paper describes the development of the Apache-Linux Measurement Toolkit (ALMT), which is a highly accurate measurement tool for evaluating the performance of a Web server. The toolkit combines hardware and software to provide fine-grained data on the

Dynamic Load Balancing for Data-Parallel MPI Programs

June 14, 1999
Author(s)
William L. George
This paper describes the dynamic load-balancing support available in DParLib, a library of MPI-basedroutines that support the data-parallel style of programming in MPI (Message Passing Interface).The basic structure of DparLib is described with a focus on

Network-Diffused Media Scaling for Multimedia Content Services

June 7, 1999
Author(s)
O E. Kia, J J. Sauvola, D Doermann
In this paper we propose a new approach to address multimedia consumption schedule for hybrid networks and terminals having variable amount of resources. The overall task is to match the data contained within the multimedia content to the abilities of the

Topic By Topic Performance of Information Retrieval Systems

June 4, 1999
Author(s)
Walter S. Liggett Jr
Formulation of topic properties is the goal of this paper. These properties are to be used in judging the difficulty of topics appropriate to the Text REtrieval Conference (TREC) ad hoc task. Applying statistical methods to both TREC-6 and TREC-7

The Effects of Cultural Markers on Web Site Use

June 3, 1999
Author(s)
Charles L. Sheppard, Jean C. Scholtz
Our research involves identifying factors that affect the usability of web sites. In particular, given that many web sites are accessed by substantial numbers of international users, an important question is whether a site design that reflects a user s

1 Volt DC Programmable Josephson Voltage Standard System

June 1, 1999
Author(s)
Charles J. Burroughs, Samuel Benz, Todd E. Harvey, Clark A. Hamilton
NIST has developed a programmable Josephson voltage standard (JVS) that produces intrinsically stable voltages that are programmable from -1.1 V to +1.1 V.

A New Determination of the Newtonian Constant of Gravity Using the Free Fall Method

June 1, 1999
Author(s)
J. Schwarz, D S. Robertson, T M. Niebauer, J E. Faller
We report on a recent determination of the Newtonian constant of gravity, G, using a new free fall method. This method uses a freely falling test object to sense the gravitational field of a ring-shaped mass placed alternately above and below the drop

A primary pressure standard at 100 kPa

June 1, 1999
Author(s)
James W. Schmidt, Y Q. Cen, Robert G. Driver, Walter J. Bowers Jr., J C. Houck, S A. Tison, Charles D. Ehrlich
Primary pressure standards in the atmospheric pressure range are often established using mercury manometers. To a lesser extent controlled-clearance dead-weight testers in which one component (normally the piston) has been dimensionally measured have also

A Queueing Model of a Spread Spectrum Multiple Access

June 1, 1999
Author(s)
Vladimir V. Marbukh, Nader Moayeri
We propose a queueing model of the reverse link from mobiles to the base station in a single cell of a cellular DS-CDMA system. Approximation of independent queues leads to a non-linear fixed point equation that describes globally or locally stable system

Acid-Assisted Consolidation of Powder Compacts: Cold-Welding or Cold Sintering

June 1, 1999
Author(s)
M P. Dariel, M Ratzker, F Eichmiller
Silver powder that has been treated in dilute fluoroboric acid solution and compacted at room temperature displays surprisingly elevated flexural and even tensile strength. The density and mechanical strength values increase with increasing compaction

An Overview of the Development of Technical Infrastructure in the Asia-Pacific Region: The Work of the Asia-Pacific Economic Cooperation (APEC) Sub-Committee in Standards and Conformance (SCSC) and the Specialist Regional Body (SRBS)

June 1, 1999
Author(s)
C R. DeVaux
The development and maintenance of an economy's standards and conformance technical infrastructure is critical to its economic health. By increasing the competence of its measurement and testing capabilities, in particular, an economy can provide

Analysis of Current Flow in Mono-Crystalline Electrical Linewidth Structures

June 1, 1999
Author(s)
S Smith, I. A. Lindsay, Anthony Walton, Michael W. Cresswell, Loren W. Linholm, Richard A. Allen, M. Fallon, Alan Gundlach
The current flow in lightly doped mono-crystalline silicon structures designed for use as low cost secondary reference linewidth standards is investigated. It is demonstrated that surface charge can have a significant effect upon the measurements of

Analysis of Residual Stress State in Thermal Barrier Coatings

June 1, 1999
Author(s)
Tze-Jer Chuang, Lin-Sien H. Lum
To enhance thermal efficiency of a system in high temperature structural applications, thermal barrier coatings (TBC) are often applied on the metallic substrate to protect the component from deterioration while increasing the operating temperature of the
Displaying 49826 - 49850 of 73697
Was this page helpful?