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Displaying 27976 - 28000 of 74024

Temperature dependence of spin-torque-driven self-oscillators

October 15, 2009
Author(s)
William H. Rippard, Matthew R. Pufall, Thomas Cecil, Thomas J. Silva, Stephen E. Russek, M. L. Schneider
We have measured the temperature dependence of spin-torque-driven self-oscillations in point-contact nanooscillators for both in-plane and out-of-plane applied fields. We find that the linewidth for both field geometries is qualitatively similar. In the

An Analysis of CVSS Version 2 Vulnerability Scoring

October 14, 2009
Author(s)
Karen A. Scarfone, Peter M. Mell
The Common Vulnerability Scoring System (CVSS) is a specification that is used to measure the relative severity of software vulnerabilities. CVSS version 2, which was finalized in June 2007, was designed to address several deficiencies discovered during

Ground Truth Data Using 3D Imaging for Urban Search and Rescue Robots

October 14, 2009
Author(s)
Nicholas A. Scott, Alan M. Lytle
The National Institute of Standards and Technology (NIST) is leading an effort to develop performance standards for ur- ban search and rescue robots (US&R). An important com- ponent of developing performance standards for these robots is capturing ground

Mobile Forensic Reference Materials: a Methodology and Reification

October 14, 2009
Author(s)
Wayne Jansen, Aurelien M. Delaitre
This report concerns the theoretical and practical issues with automatically populating mobile devices with reference test data for use as reference materials in validation of forensic tools. It describes an application and data set developed to populate

October 2009 SRM Spotlight

October 14, 2009
Author(s)
Regina R. Montgomery
The SRM Spotlight is a newsletter published by the Measurement Services Division for users of NIST standard reference materials. The Spotlight announces new reference materials and provides information about their use. In addition, this newsletter contains

Simplified Analysis of Matcher Performance and Fusion

October 14, 2009
Author(s)
Vladimir N. Dvornychenko
Provides some first-order techniques for analyzing matcher performance. A novel argument is used to derive the power-law as a kind of baseline for analyzing matcher performance. The power-law is then applied to two situations: a) CMC curves, and b) fusion

Adhesion, Copper Voiding, and Debonding Kinetics of Copper/Dielectric Diffusion Barrier Films

October 13, 2009
Author(s)
Ryan P. Birringer, Roey Shaviv, Thomas Mountsier, Jon Reid, Jian Zhou, Roy H. Geiss, David T. Read, Reinhold Dauskardt
Effects of the chemistry of electroplated copper films on stress-induced voiding and adhesion between the films and a SiN barrier layer are reported. The void density as observed by scanning electron microscopy decreased markedly with increasing Cu purity

NIST SRM (Standard Reference Material) 2460/2461 Standard Bullets and Casings Project

October 13, 2009
Author(s)
Jun-Feng Song, Thomas Brian Renegar, Xiaoyu Alan Zheng, Robert M. Thompson, Richard M. Silver, Martin M. Ols, Ted T. Vorburger
The National Institute of Standards and Technology (NIST) in collaboration with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) has developed the Standard Reference Material (SRM) 2460 Bullets and 2461 Cartridge Cases. NIST has also

An efficient, optical fiber-based waveguide interface to a single quantum dipole

October 12, 2009
Author(s)
Marcelo I. Davanco, Kartik A. Srinivasan
We theoretically investigate a single emitter embedded in a hybrid optical waveguide that proves highly efficient, optical fiber access to the dipole transition. A photoluminescence collection efficiency above 70 \% and an approximately 15 dB transmission

Innovations in Maximum Likelihood Quantum State Tomography

October 9, 2009
Author(s)
Scott C. Glancy, Emanuel H. Knill, Thomas Gerrits, Tracy S. Clement, Brice R. Calkins, Adriana E. Lita, Aaron J. Miller, Alan L. Migdall, Sae Woo Nam, Richard P. Mirin
At NIST we are engaged in an experiment whose goal is to create superpositions of optical coherent states (such superpositions are sometimes called "Schroedinger cat" states). We use homodyne detection to measure the light, and we apply maximum likelihood

Results of an international photomask linewidth comparison of NIST and PTB

October 9, 2009
Author(s)
Bernd Bodermann, Detleff Bergmann, Egbert Buhr, Wolfgang Haebler-Grohne, Harald Bosse, James E. Potzick, Ronald G. Dixson, Richard Quintanilha, Michael T. Stocker, Andras Vladar, Ndubuisi George Orji
In preparation of the international Nano1 linewidth comparison on photomasks between 9 national metrology institutes, NIST and PTB have started a bilateral linewidth comparison in 2008, independent of and prior to the Nano1 comparison in order to test the

Volume Estimation of Molded Artifacts by B-Splines

October 9, 2009
Author(s)
David E. Gilsinn, Bruce R. Borchardt, Amelia Tebbe
The volumes of two industrially molded non-metallic artifacts were estimated using surface data obtained by a coordinate measuring machine. A tensor product of B-splines was used to model the probed data points on the surface and the Divergence Theorem was
Displaying 27976 - 28000 of 74024
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