Characterization of CL-20 for shock initiation modeling and simulation
Abstract not provided.
Publications
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Jump to search filtersCalculation of chemical reaction energies using the AM05 density functional
Journal of Computational Chemistry
Abstract not provided.
Examining interactions between lipid bilayers using all-atom simulations
Journal of Chemical Physics
Abstract not provided.
Coherent Transport of electronic spin in a donor based triple well using adiabatic passage
Physical Review B
Abstract not provided.
Terahertz quantum cascade laser integration with on-chip micromachined rectangular waveguides
Abstract not provided.
Secure Wireless Key Management for MAC-Layer Security and First Responder Credentialing
Abstract not provided.
Demonstration of an in-situ on-chip tensile tester
Applied Physics Letters
Abstract not provided.
Drop Fingering on Oblique Impact: Part 1--Experimental Data
Abstract not provided.
Presentations linked to SNLs external website - Economic Impact on the state of NM Summit
Abstract not provided.
Presentations linked to SNLs external website - 2009 Economic Impact on the state of NM Summit
Abstract not provided.
Presentations linked to SNLs exteranl website - 2009 Economic Impact on the State of NM Summit
Abstract not provided.
Dynamic neurological modeling constraints
Abstract not provided.
Monobit Subsampler for Digital Downconversion in Pulse-Doppler Radar Applications
IEEE Transactions
Abstract not provided.
Synthesis of scandium carbides from the elements at high- (P T) conditions
Elsevier
Abstract not provided.
CRF News November/December
Abstract not provided.
Planar LTCC transformers for high voltage flyback converters
IEE Transactions on Components and Packaging Technologies
Abstract not provided.
Microphotonic Thermal Detectors and Imagers
Abstract not provided.
Limits to Silicon Modulator Bandwidth and Power Consumption
Abstract not provided.
A Comparison of Mortar and Collocation Approaches for Acoustic and Structural Acoustic Analysis
Abstract not provided.
Effect of Substrate Compliance and Yielding on Thin Film Delamination
Abstract not provided.
Improving The Semidefinite Programming Bound To Max Cut
Operations Research Letters
Abstract not provided.
Verification Validation Uncertainty Quantification Predictive Modeling and Simulation: Integration of NW Capabilities into NEAMS
Abstract not provided.
Using DEDICOM for Completely Unsupervised Part-of-Speech Tagging
NAACL HLT 2009 - Unsupervised and Minimally Supervised Learning of Lexical Semantics, Proceedings of the Workshop
A standard and widespread approach to part-of-speech tagging is based on Hidden Markov Models (HMMs). An alternative approach, pioneered by Schütze (1993), induces parts of speech from scratch using singular value decomposition (SVD). We introduce DEDICOM as an alternative to SVD for part-of-speech induction. DEDICOM retains the advantages of SVD in that it is completely unsupervised: no prior knowledge is required to induce either the tagset or the associations of types with tags. However, unlike SVD, it is also fully compatible with the HMM framework, in that it can be used to estimate emission- and transition-probability matrices which can then be used as the input for an HMM. We apply the DEDICOM method to the CONLL corpus (CONLL 2000) and compare the output of DEDICOM to the part-of-speech tags given in the corpus, and find that the correlation (almost 0.5) is quite high. Using DEDICOM, we also estimate part-of-speech ambiguity for each type, and find that these estimates correlate highly with part-of-speech ambiguity as measured in the original corpus (around 0.88). Finally, we show how the output of DEDICOM can be evaluated and compared against the more familiar output of supervised HMM-based tagging.
Dispersion and attenuation for the anelastic velocity-memory-stress system
79th Society of Exploration Geophysicists International Exposition and Annual Meeting 2009, SEG 2009
Dispersion and attenuation relations are derived for both the continuous and discrete velocity-memory-stress systems governing 3D anelastic wave propagation in a standard linear solid. Phase speed and attenuation factor curves extracted from these relations enable optimal selection of spatial and temporal gridding intervals to achieve finite-difference algorithm efficiency, while simultaneously minimizing numerical inaccuracy.
Poly(phenylene)-based anion exchange membranes for alkaline fuel cells
ECS Transactions
Cationic polymer membranes that conduct free anions comprise an enabling research area for alkaline membrane fuel cells and other solid-state electrochemical devices that operate at high pH. The synthesis of anion exchange membranes based on a poly(phenylene) backbone prepared by a Diels-Alder reaction is demonstrated as a potential material for alkaline fuel cells. The poly(phenylene)s have benzylic methyl groups that are converted to bromomethyl groups by a radical reaction. Cationic polymers result from conversion of the bromomethyl groups to ionic moieties by quaternization with trimethylamine in the solid state. The conversion to benzyltrimethyl ammonium groups is incomplete as evidenced by the differences between the IEC values measured by titration and the theoretical IECs based on 1H NMR measurements. The anion exchange membranes formed from these polymers have hydroxide ion conductivities as high as 50 mS/cm in liquid water and they are stable under highly basic conditions at elevated temperatures. ©The Electrochemical Society.
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