Search results for: “all”
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Surface of Ligeia Mare, Titan, from Cassini Altimeter and Radiometer Analysis
Cassini radar observations of the surface of Ligeia Mare collected during the 23 May 2013 (T91) Cassini flyby show that it is extremely smooth, likely to be mostly methane in composition, and exhibits no surface wave activity.
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Building evidence and building practice in Computer Science education
We recommend research in areas involving the early portion of the pathway to computer science as a profession: K-12 education. We propose the following as critical research topics to advance the field of computer science education research and learning science theories of computational thinking and related practices
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Global Imaging of Polar Cap Patches with Dual Airglow Imagers
During a 2 h interval from 2240 to 2440 UT on 12 November 2012, regions of increased 630.0 nm airglow emissions were simultaneously detected by dual all-sky imagers in the polar cap.
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The MetaCyc database of pathways and enzymes and the BioCyc collection of Pathway/Genome Databases
The MetaCyc database (MetaCyc.org) is a comprehensive and freely accessible database describing metabolic pathways and enzymes from all domains of life.
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Deduction for Natural Language Access to Data
We outline a general approach to automated natural-language question answering that uses first-order logic and automated deduction. Our interest is in answering queries over structured data resources
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Empirical Model of Poynting Flux Derived from Fast Data and a Cusp Signature
Empirical models of the Poynting flux and particle kinetic energy flux, associated with auroral processes, have been constructed using data from the FAST satellite and are available online.
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Gene-Environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson’s Disease
Here we describe the use of a neurotoxin, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), which produces a nigrostriatal lesion to elucidate the distinct contributions of LOX isozymes to neurodegeneration related to PD.
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Synthesis for Polynomial Lasso Programs
We present a method for the synthesis of polynomial lasso programs. These programs consist of a program stem, a set of transitions, and an exit condition, all in the form of algebraic assertions (conjunctions of polynomial equalities).
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A flexible high potential printed battery for powering printed electronics
The developed battery is a series interconnected array of 10 low resistance Zn-MnO2 alkaline cells, giving an open circuit potential of 14 V.
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Enhanced vertical and lateral hole transport in high aluminum-containing AlGaN for deep-UV light emitters
We report improved p-type conductivity in AlGaN:Mg superlattice (SL) cladding layers designed for deep ultraviolet light emitting devices operating at wavelengths down to 255 nm.
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Origin of the tunable open circuit voltage in ternary blend bulk heterojunction organic solar cells
Ternary blend bulk heterojunction organic solar cells comprising two polythiophene polymer donors or two fullerene acceptors are shown to have unique electronic properties.
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Flow cytometry on a chip
After a brief review of some new technologies important for on the flow anayte characterization we will describe an optical detection technique termed spatially modulated fluorescence emission developed at PARC which can delivers high signal-to-noise discrimination without precision optics to enable a flow cytometer that can combine high performance, robustness, compactness, low cost, and ease…