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Displaying 22301 - 22325 of 73929

Protecting Wireless Local Area Networks

December 3, 2012
Author(s)
Shirley M. Radack, David R. Kuhn
This article summarizes the information that was presented in the February 2012 Information Technology Laboratory (ITL) bulletin, Guidelines for Securing Wireless Local Area Networks (WLANs). The bulletin, which was noted by WERB in February 2012, was

Relative Rigidity of Cell-Substrate Affects Hepatic and Hepatocellular Carcinoma Cell Migration

December 3, 2012
Author(s)
Martin Y. Chiang, Hongbing Wang, Li Zhong, Qiaoyan Tan, Gurinder K. Singh, Song Li, Li Yang, Yanzi Yangben
Polyacrylamide gels with different stiffness and glass were employed as substrates to investigate how substrate stiffness affects the cellular stiffness of adherent hepatocellular carcinoma (HCCLM3) and hepatic (L02) cells. The interaction of how cell

ThermoData Engine (TDE): Software Implementation of the Dynamic Data Evaluation Concept. 8. Properties of Material Streams and Solvent Design

December 3, 2012
Author(s)
Vladimir Diky, Robert D. Chirico, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Joe W. Magee, Ilmutdin M. Abdulagatov, Carlos A. Diaz-Tovar, Jeong W. Kang, Rafiqul Gani, Michael D. Frenkel
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported in this journal. The present paper describes the first application of this concept to the evaluation of thermophysical properties for

Virtual Reality Platform to Study RF Propagation in Body Area Networks

December 2, 2012
Author(s)
Kamran Sayrafian, John G. Hagedorn, Wen-Bin Yang, Judith E. Terrill
Design of efficient wireless communication protocols for body area networks requires in-depth understanding of the propagation media i.e. the human body. As obtaining large amount of data for many scenarios and use-cases via physical experiment is either

Broad-band frequency references in the near-infrared: accurate dual comb spectroscopy of methane and acetylene

December 1, 2012
Author(s)
Alexander M. Zolot, Fabrizio R. Giorgetta, Esther Baumann, William C. Swann, Ian R. Coddington, Nathan R. Newbury
The Doppler-limited spectra of methane between 176 THz and 184 THz (5870-6130 cm −1) and acetylene between 193 THz and 199 THz (6430-6630 cm −1) are acquired via comb-tooth resolved dual comb spectroscopy with frequency accuracy traceable to atomic

Controlling Atomic Interactions with Light

December 1, 2012
Author(s)
Ross A. Williams, Lindsay J. LeBlanc, Karina K. Jimenez Garcia, Matthew C. Beeler, Abigail R. Perry, William D. Phillips, Ian B. Spielman
For the majority of the 20th century atomic physicists used light to probe and understand atoms. Today, scientists use light to manipulate particles with unprecedented levels of control, routinely cooling atoms to a few billionths of a degree above

DNA Evolves

December 1, 2012
Author(s)
James A. Liddle, Seung-Hyeon Ko
None

High-energy Ultra-Small Angle X-ray Scattering Instrument at the Advanced Photon Source

December 1, 2012
Author(s)
Andrew J. Allen, Lyle E. Levine, Fan Zhang, Gabrielle G. Long, Jan Ilavsky, Pete R. Jemian
This paper reports recent tests performed on the Bonse-Hart-type ultra-small angle X-ray scattering (USAXS) instrument at the Advanced Photon Source with higher-order reflection optics — Si (440) instead of Si (220) — and with X-ray energies greater than

Long-term stability of metal-envelope enclosed ionization gauges

December 1, 2012
Author(s)
James A. Fedchak, Dana R. Defibaugh
Ionization vacuum gauges are used as secondary standards by calibration laboratories and as transfer standards in intercomparisons among metrology laboratories. A quantitative measurement of gauge stability with respect to the gauge calibration factor is

Practical Considerations for Implementing Homeland Security Models & Simulations

December 1, 2012
Author(s)
Charles W. Hutchings, Sanjay Jain, Yung-Tsun Lee, Charles McLean
Modeling and simulation (M&S) capabilities support reasoning in many domains and can provide powerful tools for homeland security analytical needs. For example, these capabilities are particularly valuable in exploring systems which are inaccessible for

Social Disorder, Accidents, and Municipal Wildfires

December 1, 2012
Author(s)
Douglas S. Thomas, David T. Butry, Jeffrey P. Prestemon
Societal safeguards, established by those who have shared perceptions in the importance of safety and taking preventative measures, reduce the incidence of accidents that harm people and damage property. These safeguards prevent or discourage community
Displaying 22301 - 22325 of 73929
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