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Journals

September 11, 2001, Airliner Crash Into the Pentagon

August 1, 2005

Author(s)

Paul K. Mlakar, D O. Dusenberry, J R. Harris, G A. Haynes, Long Phan, M A. Sozen

The Pentagon was constructed between September 1941 and January 1943. A substantial renovation of the entire 6.6 million sq ft (610 thousand sq m) facility...

Description of Structural Damage Caused by the Terrorist Attack on the Pentagon

August 1, 2005

Author(s)

Paul K. Mlakar, D O. Dusenberry, J R. Harris, G A. Haynes, Long Phan, M A. Sozen

On September 11, 2001, an airliner was intentionally crashed into the Pentagon. It struck at the first elevated slab on the west wall, and slid approximately...

Microfabricated Atomic Frequency References

August 1, 2005

Author(s)

John Kitching, Svenja A. Knappe, Li-Anne Liew, John M. Moreland, Peter D. Schwindt, V Shah, V Gerginov, Leo W. Hollberg

Using microfabrication processes, we have been able to construct physics packages for vapour cell atomic frequency references 100x smaller than previously...

Strain Effects on Point Defects and Chain-Oxygen Order-Disorder Transition in 123 Cuprate Compounds

August 1, 2005

Author(s)

H Su, D O. Welch, Winnie Wong-Ng

Contention-Based Limited Deflection Routing Protocol in Optical Burst-Switched Networks

August 1, 2005

Author(s)

SuKyoung Lee, Kotikalapudi Sriram, H S. Kim, J S. Song

We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the...

MPEG-A: A Step Forward in MPEG Standardization

August 1, 2005

Author(s)

Diepold Klaus, F Pereira, Wo L. Chang

MPEG standards are shaping the multimedia landscape since the beginning of the nineties. After the MPEG-1, MPEG-2, and MPEG-4 multimedia coding standards, the...

Testing Web Applications by Modeling with FSMs

August 1, 2005

Author(s)

A Andrews, A. J. Offutt, R Alexander

The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and...

The Fast Fourier Transform for Experimentalists Part II: Convolutions

August 1, 2005

Author(s)

D Donnelly, Bert W. Rust

The discrete Fourier transform (DFT) is a widely used tool for the analysis of measured time series data. The Cooley-Tukey fast Fourier transform (FFT)...

Coupled Fire Dynamics and Thermal Response ofComplex Building Structures

July 30, 2005

Author(s)

Kuldeep R. Prasad, Howard R. Baum

Simulation of the effects of severe fires on the structural integrity ofbuildings requires a close coupling between the gas phase energy release andtransport...

Spectroscopy Using Quantum Logic

July 29, 2005

Author(s)

Piet Schmidt, Till P. Rosenband, C. Langer, Wayne M. Itano, James C. Bergquist, David J. Wineland

We have demonstrated experimentally a general technique for precision spectroscopy of atoms that lack suitable transitions for efficient laser cooling, internal...

Critical-Current Measurements on ITER Nb3Sn Strands: Effect of Temperature

July 29, 2005

Author(s)

Loren F. Goodrich, Najib Cheggour, John (Jack) W. Ekin, Theodore C. Stauffer

Transport critical-current (II c) measurements were made on commercial multifilamentary Nb 3Sn strands at temperatures (T) from 4 to 17 K and magnetic fields (H...

Electrodeposition of Al-Mo-Mn Ternary Alloys from the Lewis Acidic AlCl(subscript 3)-EtMeImCl Molten Salt

July 28, 2005

Author(s)

T Tsuda, C L. Hussey, Gery R. Stafford

The electrodeposition of Al-Mo-Mn ternary alloys was examined in the Lewis acidic 66.7-33.3 percent mole fraction (m/o) aluminum chloride-1-ethyl-3...

Vacancy Formation Energy Near an Edge Dislocation: Hybrid Quantum-Classical Study

July 25, 2005

Author(s)

Francesca M. Tavazza, Richard J. Wagner, Lyle E. Levine

Effect of Deposition Conditions on Mechanical Properties of Low-Temperature PECVD Silicon Nitride Films

July 25, 2005

Author(s)

H Huang, K Winchester, A Suvorova, Yiping Liu, X Z. Hu, Brian R. Lawn, J Dell, L Faraone

The effect of deposition conditions on characteristic mechanical properties elastic modulus and hardness of low-temperature PECVD silicon nitrides is...

Site-Specific x-ray photoelectron spectroscopy using x-ray standing waves

July 21, 2005

Author(s)

Joseph C. Woicik

Site Specific X-ray Photoelectron Spectroscopy Using X-ray Standing Waves

July 21, 2005

Author(s)

Joseph C. Woicik

Direct Measurement of the Counterion Distribution Within Swollen Polyelectrolyte Films

July 19, 2005

Author(s)

Vivek M. Prabhu, B D. Vogt, Wen-Li Wu, Eric K. Lin, Jack F. Douglas, Sushil K. Satija, D L. Goldfarb, H Ito

The depth profile of the counterion concentration within thin polyelectrolyte films was measured in situ using contrast variant specular neutron reflectivity to...

Dynamics of ultraslow optical solitons in a cold three-state L atomic system

July 19, 2005

Author(s)

G X. Huang, Lu Deng

X-Ray Reference Patterns and Structure of the Perovskite-Related Phase R₂Cu₉Ti₁₂O₃₆(R=Lanthanides)

July 18, 2005

Author(s)

Winnie K. Wong-Ng, James A. Kaduk, J Suh

The x-ray Rietveld refinement technique was used to determine the structure and prepare x-ray powder reference patterns forthe phases R2Cu9Ti 1 2036 (R = Nd, Sm...

An Unexpected Crystal-Chemical Principle for the Pyrochlore Structure

July 18, 2005

Author(s)

Terrell A. Vanderah, M W. Lufaso

Hyperfine Coherence in the Presence of Spontaneous Photon Scattering

July 15, 2005

Author(s)

R Ozeri, C. Langer, John D. Jost, B. L. DeMarco, A. Ben-Kish, Brad R. Blakestad, Joseph W. Britton, J Chiaverini, Wayne M. Itano, David Hume, Dietrich G. Leibfried, Till P. Rosenband, Piet Schmidt, David J. Wineland

The coherence of hyperfine-state superpositions of a trapped 9Be + ion is experimentally studied in the presence of off-resonant light. It is shown that...

Viscoelastic Characterization of Polymers Using Instrumented Indentation II. Dynamic Testing

July 13, 2005

Author(s)

Christopher C. White, Mark R. VanLandingham, P L. Drzal, N-K Chang, S-H Chang

Dynamic nanoindentation was preformed on a cured epoxy, poly(methyl methacrylate), and poly(dimethyl siloxane) or PDMS. These samples, two glassy polymers and a...

Knowledge Representation and Decision Making for Mobile Robots

July 13, 2005

Author(s)

Elena R. Messina, Stephen B. Balakirsky

Knowledge is central to a mobile robot's ability to carry out its missions and adapt to changes in the environment it is traversing. The knowledge subsystem...

Vapor pressures of n-heptane determined by comparative ebulliometry

July 13, 2005

Author(s)

Jesus Sanchez Ochoa, Michael B. Ewing

The vapor pressures of n-heptane have been measured using comparative ebulliometry with water as the reference substance. The measurements cover the temperature...

Viscoelastic Characterization of Polymers Using Instrumented Indentation I. Quasi-static Testing

July 13, 2005

Author(s)

Mark R. VanLandingham, N-K Chang, P L. Drzal, Christopher C. White, S-H Chang

The use of instrumented indentation to characterize the mechanical response of polymeric materials was studied. A model based on contact between a rigid probe...

Transport of DNA through single nanometer-scale pore: evolution of signal structure

July 10, 2005

Author(s)

Vincent M. Stanford, John J. Kasianowicz

Molecular Evoultion: Introns Fall into Place.

July 10, 2005

Author(s)

Arlin B. Stoltzfus

Causal determination of acoustic group velocity and frequency derivative of attenuation with finite-bandwidth Kramers-Kronig relations

July 8, 2005

Author(s)

J Mobley, Kendall Waters, J G. Miller

Kramers-Kronig (K-K) analyses of experimental data are complicated by the extrapolation problem, that is, how the unexamined spectral bands impact K-K...

In-Situ Hardening Hydroxyapatite-Based Scaffold for Bone Repair

July 7, 2005

Author(s)

Yu Zhang, Hockin D. Xu, Shozo Takagi, Laurence C. Chow

Musculoskeletal conditions are becoming a major health concern because of an aging population and sports- and traffic-related injuries. While sintered...

CCQM-K27-Subsequent: Key Comparison (subsequent) for the Determination of Ethanol in Aqueous Matrix

July 7, 2005

Author(s)

Michele M. Schantz, David L. Duewer, Reenie M. Parris, Willie E. May, M Archer, C Mussell, D Carter, L A. Konopelko, Y A. Kustikov, A I. Krylov, O V. Fatina

Ethanol is important both forensically ('drunk driving' or driving while under the influence, 'DWI', regulations) and commercially (alcoholic beverages). Blood-...

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