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Search Publications

NIST Authors in Bold

Displaying 38051 - 38075 of 73697

The Importance of Distributed Loading and Cantilever Angle in Piezo-Force Microscopy

November 1, 2004
Author(s)
B D. Huey, C Ramanujan, M Bobji, J Blendell, Grady S. White, R Szoszkiewicz, A Kulik
Piezo-force microscopy (PFM) is a variation of atomic force microscopy that is widely applied to investigate piezoelectric thin films at the nanometer scale. Curiously, PFM experiments are found to be remarkably sensitive to the position along the

Time and frequency dissemination using GPS: Recent improvements

November 1, 2004
Author(s)
Tom Parker, Demetrios Matsakis
This is an article for a general audience that reviews recent imporvements in time and frequency delivery by the Global Positioning System (GPS). A significant improvement in direct time delivery was achieved when Selective Availability (SA) was turned off

Toward a Formal Common Information Model Ontology

November 1, 2004
Author(s)
Stephen Quirolgico, P Assis, A Westerinen, M Baskey, E Stokes
We examine the performance of multimodal biometric authentication systems using state-of-the-art Commercial Off-the-Shelf (COTS) fingerprint and face biometric systems on a population approaching 1,000 individuals. Majority of prior studies of multimodal

Toward a Formal Common Information Model Ontology

November 1, 2004
Author(s)
Stephen Quirolgico, P Assis, A Westerinen, M Baskey, E Stokes
Self-managing systems will be highly dependent upon information acquired from disparate applications, devices, components and subsystems. To be effectively managed, such information will need to conform to a common model. One standard that provides a

Virtual Permeametry on Microtomographic Images

November 1, 2004
Author(s)
C H. Arns, M A. Knackstedt, W V. Pinczewski, Nicos Martys
We show that accurate numerical micropermeametry measurements can be performed on three dimensional digitized images of sedimentary rock. The sample size can be very small making it possible to predict properties from core material not suited for

Web-Based 3D Visualization in a Digital Library of Mathematical Functions

November 1, 2004
Author(s)
Qiming Wang, Bonita V. Saunders
The National Institute of Standards and Technology (NIST) is developing a digital library of mathematical functions to replace the widely used National Bureau of Standards Handbook of Mathematical Functions published in 1964 [1]. The NIST Digital Library

Optical Control and Management Security Standards for the GIG-BE

October 31, 2004
Author(s)
Renee Esposito, Sheila E. Frankel, Richard Graveman, Scott McNown
This paper presents an overview of requirements and standards development activities for securing the control and management infrastructure protocols for optical networking protocols used in the Global Information Grid-Bandwidth Expansion (GIG-BE). Our

Micromechanical torque magnetometer with sub-monolayer sensitivity

October 29, 2004
Author(s)
Dong-Hoon Min, Andrew McCallum, Stephen E. Russek, John M. Moreland
We have developed a micromechanical torque sensor with sub-monolayer sensitivity for in situ monitoring of the magnetic moment of thin films during deposition. The film is deposited onto a microcantilever. The torque on the film is determined by measuring

Spin transfer switching of spin valve nanopillars using nanosecond pulsed currents

October 29, 2004
Author(s)
Shehzaad F. Kaka, Matthew Pufall, William Rippard, Thomas J. Silva, Stephen E. Russek, Jordan A. Katine, Matt Carey
Spin valve nanopillars are reversed via the mechanism of spin momentum transfer using current pulses applied perpendicular to the film plane of the device. The applied pulses were varied in amplitude from 1.8 to 7.8 mA, and varied in duration within the

Achieving intelligent performance in autonomous on-road driving

October 28, 2004
Author(s)
Craig I. Schlenoff, John Evans, Tony Barbera, James S. Albus, Elena R. Messina
This paper describes NIST?s efforts in evaluating what it will take to achieve autonomous human-level driving skills in terms of time and funding. NIST has approached this problem from several perspectives: considering the current stateof- the-art in

Performance evaluation of road detection and following algorithms

October 28, 2004
Author(s)
Tsai H. Hong, A Takeuchi, M Foedissch, Michael O. Shneier
We describe a methodology for evaluating algorithms to provide quantitative information about how well road detection and road following algorithms perform. The approach relies on generating a set of standard data sets annotated with ground truth. We

Power Balance in Highly Loaded Fluorescent Lamps

October 28, 2004
Author(s)
G G. Lister, John J. Curry, James E. Lawler
Discrepancies reported in the literature between numerical predictions and experimental measurements in low-pressure Hg discharges at high current densities are considered. A one-dimensional fluid model and recent spectroscopic and Langmuir probe

Status report on next generation LADAR for driving unmanned ground vehicles

October 28, 2004
Author(s)
Maris Juberts, Tony Barbera
The U.S. Department of Defense has initiated plans for the deployment of autonomous robotic vehicles in various tactical military operations starting in about seven years. Most of these missions will require the vehicles to drive autonomously over open

Task Analysis of Autonomous On-road Driving

October 28, 2004
Author(s)
Tony Barbera, John A. Horst, Craig I. Schlenoff, David Aha
The Real-time Control System (RCS) Methodology has evolved over a number of years as a technique to capture task knowledge and organize it into a framework conducive to implementation in computer control systems. The fundamental premise of this methodology
Displaying 38051 - 38075 of 73697
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