Author: SRI International
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Statistical Comparison of TEC Derived from GPS and ISR Observations at High Latitudes
A comprehensive data set collected with the Poker Flat Incoherent Scatter Radar and GPS receiver in Fairbanks, Alaska is employed to analyze and compare the total electron content estimates derived from two radio techniques at high latitudes.
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An Exploratory Study of Interdisciplinarity and Breakthrough Ideas
We conduct an exploratory study to understand how to measure the degree of interdisciplinarity involved in novel, significant research fields, and how those measures capture the integration of disparate ideas in novel configurations.
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Curcumin Regulates Colon Cancer by Inhibiting P-Glycoprotein in Cancerous Colon Perfusion Rat Model
In the present study curcumin inhibitory action on p-glycoprotein increased permeability of irinotecan, so in the colon cancer it would be beneficial if curcumin used as add on therapy.
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Promoting access to college in an era of fiscal constraints: The University of California’s Early Academic Outreach Program
We compared outcomes for EAOP students both to similar students within their schools and to similar students in other schools. This analysis of student data reveals especially promising evidence regarding the association between EAOP participation and several key outcomes of interest.
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Melt Veins Help to Permit Survival of Atmospheric Entry by Shocked Meteorites
Rocks shocked to pressures above the Hugoniot Elastic Limit are very friable. Melt veins in shocked meteorites may provide the strength needed to survive passage through the Earth’s atmosphere.
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The Association between Postload Plasma Glucose Levels and 38-Year Mortality Risk of Coronary Heart Disease: The Prospective NHLBI Twin Study
We aimed to evaluate whether the association between postload plasma glucose levels (ppGlucose) and long-term risk of mortality from coronary heart disease was independent of or attributable to genes and common environment.
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First Measurement of the BO B2Σ+ Radiative Lifetime by Laser-Induced Fluorescence Via the B2Σ+–X2Σ+ Transition
Observation of the temporal evolution of the fluorescence following laser excitation of boron monoxide molecules to the B 2Σ+ state is used to extract the radiative lifetime and collisional removal rate constant with N2 as the colliding partner.
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High-Speed Photo-Modulated Spindt Cathode for FELs
SRI International is integrating a Spindt-type field-emission source with a high-mobility GaN photoconducting semiconductor switch (PCSS) to develop cathodes capable of producing Ampere-level currents in the picosecond pulse regime.
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Measurements of the O+ to H+ Transition Height and Ion Temperatures in the Lower Topside Ionosphere over Arecibo for Equinox Conditions During the 2008-2009 Extreme Solar Minimum
We present incoherent scatter radar measurements of electron density, electron and ion temperatures, and ion composition made at Arecibo Observatory during the recent extreme solar minimum of 2007–2009…
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Automorphism Groups of Graphical Models and Lifted Variational Inference
Using the theory of group action, we first introduce the concept of the automorphism group of an exponential family or a graphical model, thus formalizing the general notion of symmetry of a probabilistic model.
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Potential Reporting Bias in fMRI Studies of the Brain
Functional magnetic resonance imaging (fMRI) studies have reported multiple activation foci associated with a variety of conditions, stimuli or tasks.
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Suppression of the Hanle Effect in Organic Spintronic Devices
We study carrier spin transport under a transverse magnetic field in organic structures.