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Search Publications

NIST Authors in Bold

Displaying 22626 - 22650 of 73697

Computer Security Incident Handling Guide

August 6, 2012
Author(s)
Paul R. Cichonski, Thomas Millar, Timothy Grance, Karen Scarfone
Computer security incident response has become an important component of information technology (IT) programs. Security-related threats have become not only more numerous and diverse but also more damaging and disruptive. An incident response capability is

Coupled-cavity ring-down spectroscopy technique

August 6, 2012
Author(s)
Jeremie B. Courtois, Joseph T. Hodges
We present a technique called coupled-cavity ring-down spectroscopy (CC-RDS) for controlling the finesse of an optical resonator. Applications include extending the sensitivity and dynamic range of a cavity-enhanced spectrometer, as well as widening the

Estimating Heterogeneity Variance in Meta-Analysis

August 6, 2012
Author(s)
Andrew L. Rukhin
Several new estimators of the between-study variability in a heterogeneous random effects meta-analysis model are derived. One of them can be interpreted as the empirical Bayes procedure for a diffuse prior with the given prior mean. Another is the

Nanocrystalline Zinc Oxide Powder for X-ray Diffraction Metrology

August 6, 2012
Author(s)
David R. Black, Joseph J. Ritter, John E. Bonevich, Albert Henins, James P. Cline
Nano scale zinc oxide powder has been produced using a precise thermal decomposition process from a zinc oxalate precursor powder. The size of the crystallites is determined by the specifics of the thermal processing which were chosen to yield crystallites

On Lower Bound Antenna Efficiency Measurements in a Reverberation Chamber

August 6, 2012
Author(s)
Jason B. Coder, John M. Ladbury
This paper addresses a few specific aspects of measuring the lower bound of antenna efficiency in a reverberation chamber. While the initial method for measuring the lower bound of efficiency has been presented, three key revisions are discussed here: (1)

Not Your Mother's Web3D: Integrating X3DOM, jQuery and HTML5

August 4, 2012
Author(s)
Sanford P. Ressler
This tutorial, for intermediate users, is suitable for educators, scientists and artists, with some 3D and programming experience, (all attendees). The benefits of declarative 3D markup, as realized by X3DOM will be emphasized in the context of integration

Dual-channel, single-photon upconversion detector at 1.3 mm

August 3, 2012
Author(s)
Jason S. Pelc, Paulina Kuo, Oliver T. Slattery, Lijun Ma, Xiao Tang, Martin M. Fejer
We demonstrate efficient, single-photon upconversion detection of two wavelengths in the 1300-nm band. The upconversion detector is based on a phase-modulated, periodically poled LiNbO3 waveguide that simultaneously quasi-phasematches two sum-frequency

Dual-channel, single-photon upconversion detector at 1300 nm

August 3, 2012
Author(s)
Paulina Kuo, Jason S. Pelc, Oliver T. Slattery, Lijun Ma, Martin M. Fejer, Xiao Tang
We show a dual-channel, upconversion detector at 1.3-m-wavelength based on phasemodulated periodically poled LiNbO3, and use it for wavelength- to time-division multiplexing to achieve high data rates, useful for quantum key distribution.

Summary Report of Research on TiO2 Nanomaterial

August 3, 2012
Author(s)
Vincent A. Hackley
Report summarizes study whose purpose was to optimize and validate a standardized and reproducible approach for the preparation of TiO2 nanoparticle dispersions in relevant biological and environmental test media, using an industrially relevant powder form

Ti_(12.5)Zr_(21)V_(10)Cr_(8.5)Mn_(x)Co_(1.5)Ni_(46.5-x)AB_(2)-type metal hydride alloys for electrochemical storage application: Part 1. Structural characteristics

August 3, 2012
Author(s)
Leonid A. Bendersky, Ke Wang, Igor Levin, Dale E. Newbury, K. Young, B. Chao, Adam A. Creuziger
The microstructures of a series of AB_(2)-based metal hydride alloys (Ti_(12.5)Zr_(21)V_(10)Cr_(8.5)Mn_(x)Co_(1.5)Ni_(46.5-x)) designed to have different fractions of non-Laves secondary phases were studied by x-ray diffraction, scanning electron

Data in the 21st Century

August 2, 2012
Author(s)
Ursula R. Kattner
Data have always been important in the field of materials science and engineering. Important attributes and properties for such databases to fulfill data requirements of the 21st century are being evaluated.

Ionic Liquid Facilitated Introduction of Functional Materials into Biopolymer Polymer Substrates

August 2, 2012
Author(s)
Shonali Nazare, Jeffrey W. Gilman, Mauro Zammarano, Luke Haverhals, W.Matthew Reichert, Hugh De Long, Paul C. Trulove
In addition to being efficient solvents for biopolymers, several ionic liquids (ILs) have been shown to be effective solvents for synthetic polymers such as meta-aramids, i.e., Nomex ® (1-5). In this report, meta-aramid/cotton composites are generated by

Polymer-Fullerene Mixing in Organic Solar Cells

August 2, 2012
Author(s)
Hyun Wook Ro, Bulent Akgun, Regis J. Kline, Chad R. Snyder, Sushil K. Satija, Christopher L. Soles, Dean M. DeLongchamp, Michael F. Toney, Alexander L. Ayzner, Brendan T. O'Connor, Matthew Hammond
The mixing behavior of the hole and electron transporting materials in bulk heterojunction (BHJ) organic photovoltaic (OPV) blends plays a key role in determining the nanoscale morphology, which is believed to be a decisive factor in determining device

SEABIRD TISSUE ARCHIVAL AND MONITORING PROJECT: Egg Collections and Analytical Results for 2006-2009

August 2, 2012
Author(s)
Stacy S. Schuur, Paul R. Becker, Sylvain Berail, Russell D. Day, Olivier F. Donard, Keith A. Hobson, Amanda J. Moors, Rebecca S. Pugh, Lauren B. Rust, David G. Roseneau
Since 1999, the Seabird Tissue Archival and Monitoring Project (STAMP) has collected, banked, and analyzed seabird eggs using established protocols to monitor chlorinated pesticides, polychlorinated biphenyls (PCBs), brominated flame retardants, and

Thermal Analysis of Refrigeration Systems Used for Vaccine Storage

August 2, 2012
Author(s)
Michal J. Chojnacky, Gregory F. Strouse
The CDC administers over $3 billion worth of vaccines per year through the Vaccines for Children program. Vaccine storage temperature is critical to maintaining drug potency, and as much as one-third of delivered vaccines are wasted due to thermal

Variable Projection for Nonlinear Least Squares Problems

August 2, 2012
Author(s)
Dianne M. O'Leary, Bert W. Rust
The variable projection algorithm of Golub and Pereyra (1973) has proven to be quite valuable in the solution of nonlinear least squares problems in which a substantial number of the parameters are linear. Its advantages are efficiency and, more

A compact and robust method for full Stokes spectropolarimetry

August 1, 2012
Author(s)
William Sparks, Thomas Germer, John MacKenty, Frans Snik
We present an approach to spectropolarimetry which requires neither moving parts nor time dependent modulation, and which o ers the prospect of achieving high sensitivity. The concept, which is one of those generically known as channeled polarimetry, is to
Displaying 22626 - 22650 of 73697
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