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 40701 - 40725 of 73963

An Approach to Predicting the Location of Moving Objects During On-Road Navigation

August 15, 2003
Author(s)
Craig I. Schlenoff, Rajmohan Madhavan, Stephen B. Balakirsky
For an autonomous vehicle to navigate in real-time within a dynamic environment, it must be able to respond to moving objects. In particular, it must be able to predict, with appropriate levels of confidence, where those objects are expected to be at times

Optical Manipulation of Atoms at the Nanoscale

August 11, 2003
Author(s)
William D. Phillips
These notes are to provide an outline of a lecture presented at the Enrico Fermi Summer School at Nanoscale Science, held in Varenna in July 2000. They are not intended as a complete account of that lecture, but as an indication of the topics covered and a

Erratum: Modeling Detector Response for Neutron Depth Profiling

August 10, 2003
Author(s)
Kevin Coakley, R. G. Downing, George P. Lamaze, H C. Hofsass, C Ronning, J Biegel
In a previous paper, we analyzed the Neutron Depth Profiling energy spectrum collected from a diamond-like carbon (DLC) sample doped with boron. Based on a numerical model for the Detector Response Function (DRF), we estimated a theoretical boron profile

Comparison of Macro-Tip/Tilt & Meso-Scale Position Beam-Steering Transducers for Free-Space Optical Communications Using a Quadrant Photodiode Sensor

August 6, 2003
Author(s)
Jason J. Gorman, Nicholas Dagalakis, K B. Fielhauer, B G. Boone, J R. Bruzzi, Jeffery Kluga
The National Aeronautics and Space Administration (NASA) plans to develop optical communication terminals for future spacecraft, especially in support of high data rate science missions and manned exploration of Mars. Future, very long-range missions, such

IT Security Metrics (ITL Bulletin)

August 4, 2003
Author(s)
Elizabeth B. Lennon
This ITL Bulletin summarizes the recently published NIST Special Publication (SP) 800-55, Security Metrics Guide for Information Technology Systems, by Marianne Swanson, Nadya Bartol, John Sabato, Joan Hash, and Laurie Graffo. NIST SP 800-55 provides

Seedless Superfill: Copper Electrodeposition in Trenches with Ruthenium Barriers

August 4, 2003
Author(s)
Daniel Josell, Daniel Wheeler, C Witt, Thomas P. Moffat
Superconformal filling of fine trenches during electrodeposition of copper is described. Copper electrodeposition was accomplished durectly on a ruthenium layer. The ruthenium layer, as well as a titanium layer to promote adhesion, was evaporated on

Discovery in Hydrating Plaster Using Multiple Machine Learning Methods

August 3, 2003
Author(s)
John G. Hagedorn, J E. Devaney
We apply multiple machine learning methods to obtain concise rules that are highly predictive of scienti cally meaningful classes in hydrating plaster over multiple time periods. We use three dimensional data obtained through X-ray microtomography at

1/f Noise Floor of Solid-State Voltage Standards

August 1, 2003
Author(s)
Yi-hua D. Tang, Thomas J. Witt
To characterize the performance of solid-state voltage standards (Zener standards) the 1/f nature of Zener noise must be considered. At the Bureau International des Poids et Mesures (BIPM) this is done by using the Allan variance to take into account

A 420 MHz Cr:forsterite Femtosecond Ring Laser and Its Use for Continuum Generation in the 1-2 Micron Range

August 1, 2003
Author(s)
I Thomann, A Bartels, Kristan L. Corwin, Nathan R. Newbury, Leo W. Hollberg, Scott Diddams, Jeffrey W. Nicholson, M. F. Yan
We demonstrate a chromium-doped forsterite femtosecond ring laser that generates 30-fs pulses at a 420-MHz repetition rate with nearly 500 mW of average power. The compact solid-state design and broad spectral output make this laser attractive for

A Business-to-Business Interoperability Testbed: An Overview

August 1, 2003
Author(s)
Boonserm Kulvatunyou, Nenad Ivezic, M Martin, Albert T. Jones
In this paper, we describe a business-to-business (B2B) testbed co-sponsored by the Open Applications Group, Inc. (OAGI) and the National Institute of Standard and Technology (NIST) to advance enterprise e-commerce standards. We describe the business and

A Framework for Multi-mode Authentication: Overview and Implementation Guide

August 1, 2003
Author(s)
Wayne Jansen, Vladimir Korolev, Serban I. Gavrila, T Heute, Clement Seveillac
The use of mobile handheld devices within the workplace is expanding rapidly. These devices are no longer viewed as coveted gadgets for early technology adopters, but have instead become indispensable tools that offer competitive business advantages for

A Hybrid Approach To Manufacturing Enterprise Simulation

August 1, 2003
Author(s)
Luis C. Rabelo, M Helal, Albert T. Jones, J Min, Y J. Son, A S. Deshmukh
Manufacturing enterprise decisions can be classified into four groups: business decisions, design decisions, engineering decisions, and production decisions. Numerous physical and software simulation techniques have been used to evaluate specific decisions

A Link-Level Simulator of the CDMA2000 Reverse-Link Layer

August 1, 2003
Author(s)
Hamid Gharavi, R Wyatt-Millington, F Chin, K Ban
This paper presents the design and implementation of a simulation model for the cdma2000 reverse link. The model includes all the radio configurations and their corresponding data rates in accordance with the IS-2000 specifications. The paper first

A Link-Level Simulator of the cdma2000 Reverse-Link Physical Layer

August 1, 2003
Author(s)
Hamid Gharavi, F Chin, K Ban, R Wyatt-Millington
The cdma2000 system is an evolutionary enhancement of the IS-95 standards which support 3G services defined by the International Telecommunications Union(ITU). cdma2000 comes in two phases: 1XRTT and 3XRTT (1X and 3X indicatesthe number of 1.25 MHz wide

A Logical Model of Conceptual Integrity in Data Integration

August 1, 2003
Author(s)
David W. Flater
Conceptual integrity is required for the result of data integration to be cohesive and sensible. Compromised conceptual integrity results in semantic faults, which are commonly blamed for latent integration bugs. A logical model of conceptual integrity in

A Manufacturing B2B Interoperability Testbed

August 1, 2003
Author(s)
Nenad Ivezic, Boonserm Kulvatunyou, Albert T. Jones
This paper describes the NIST Manufacturing Business-to-Business Interoperability Testbed developed at the Manufacturing Systems Integration Division of the National Institute of Standards and Technology. The testbed is geared to advance state of practice
Displaying 40701 - 40725 of 73963
Was this page helpful?