Publications
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Scaffolding Group Explanation and Feedback with Handheld Technology: Impact on Students’ Mathematics Learning
We compared group and individual learning feedback, using two technologies: (1) Technology-mediated, Peer-Assisted Learning and (2) a popular desktop product, which provides feedback to individual students as they solve fractions…
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Composite Imaging of Auroral Forms and Convective Flows During a Substorm Cycle
Measurements obtained with the electronically steerable Poker Flat Incoherent Scatter Radar (PFISR) and collocated all-sky camera were used to construct composite images of ionospheric convective flows and auroral forms.
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Lightning-Generated NO(X) Seen By the Ozone Monitoring Instrument During NASA’s Tropical Composition, Cloud and Climate Coupling Experiment (TC(4))
We present case studies identifying lightning-generated upper tropospheric NOx (LNOx) observed during NASA's Tropical Composition, Cloud and Climate Coupling Experiment (TC4) in July and August 2007.
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Scaffolding Group Explanation and Feedback with Handheld Technology: Impact on Students’ Mathematics Learning
We compared group and individual feedback, using two technologies: Technology-mediated, Peer-Assisted Learning (TechPALS), and a popular desktop product, which provides feedback to individual students as they solve fractions problems individually.
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Optically-pumped lasing of semipolar InGaN/GaN(1122) heterostructures
Results for long-wavelength emitters are presented for growth of semi-polar InGaN/AlGaN/GaN heterostructures on GaN(1122)/m-sapphire templates by metalorganic chemical vapor deposition (MOCVD).
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The “3D Wiki”: blending virtual worlds and web architecture for remote collaboration
In this paper we describe the technology behind our 3D Wiki, a system meant to address this problem.
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One experience collecting sensitive mobile data
We report on our efforts to collect behavioral data based on activities recorded by phones.
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Using Design Personas To Inform Refinements To Software For Science Learning
In this paper, we describe the process of creating personas to inform refinements to the design of software designed to help elementary students create concept maps of science topics they…
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5′-AMP-Activated Protein Kinase Activity is Elevated Early During Primary Brain Tumor Development in the Rat
We used an established model of brain tumor (glioma) development in the offspring of rats exposed prenatally to the mutagen N-ethyl-N-nitrosourea.
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Genome Sequence of the Necrotrophic Plant Pathogen Pythium Ultimum Reveals Original Pathogenicity Mechanisms and Effector Repertoire
Pythium ultimum is a ubiquitous oomycete plant pathogen responsible for a variety of diseases on a broad range of crop and ornamental species.
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Policy-Based Data Downgrading: Toward a Semantic Framework and Automated Tools to Balance Need-To-Protect and Need-To-Share Policies
We describe a new paradigm for articulating need-to-protect and need-to-share policies that shows promise for enabling automated derivation of the downgrading rulesets needed to comply with these policies in systems…
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EduSpeak®: A Speech Recognition and Pronunciation Scoring Toolkit for Computer-Aided Language Learning Applications
SRI International's EduSpeak® system is a SDK that enables developers of interactive language education software to use state-of-the-art speech recognition and pronunciation scoring technology.