Publications
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Does First Step to Success Have Long-term Impacts on Student Behavior? An Analysis of Efficacy Trial Data
The purposes of this study were to assess whether effects in student behavior and academics were maintained at follow-up and to examine the relationship of implementation fidelity to outcomes.
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Evaluating Multimedia Features and Fusion for Example-Based Event Detection
To study the value of multimedia features and fusion for representing and learning events from a set of example video clips, we created SESAME, a system for video SEarch with…
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F Region Dusk Ion Temperature Spikes at the Equatorward Edge of the High-Latitude Convection Pattern
Using Poker Flat Incoherent Scatter Radar data from the International Polar Year, we observed unexpected short-lived enhancements of a few 100āK in theĀ FĀ region ion temperature, or āTiĀ spikesā, in conjunction with…
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Kinetics of light induced defect creation in organic solar cells
The kinetics of light-induced recombination centers are measured in bulk heterojunction organic solar cells, as a function of exposure time, intensity and the illumination photon energy.
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Radiation induced hydrogen rearrangement in poly(3-alkylthiophene)
We present density functional calculations of the energy barriers that must be surmounted to form hydrogen related defects in polymers such as poly(3-alkylthiophene).
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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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Electronic structure and mobility of alkylated and nonalkylated organic semiconductors: role of van der Waals interactions
We present a comparison based on first-principles calculations of the electronic structure of nonalkylated and alkylated dinaphtho[2,3-b:2,3-f]thieno[3,2-b]thiophene: DNTT and DNTT-C10.
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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…
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Persistent photoconductivity effects in printed n-channel organic transistors
Persistent photoconductivity of top-gate n-type organic transistors is investigated, as the irradiation of light leads to a negative shift in transistor threshold voltage and an increase in subthreshold current.
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Early childhood language interventions: An illustration of the model demonstration process
This project brief summarizes the characteristics, implementation experiences, and outcomes achievedĀ by one of OSEPās investments in model demonstration activitiesāa cohort of three grantees thatĀ demonstrated various approaches to implementing…