Author: SRI International
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Using Evidence Centered Design For Learning (ECDL) To Examine the ASSISTments system
We introduce a design methodology – Evidence Centered Design for Learning (ECDL) that supports the design of educational systems in terms of evidentiary arguments.
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Using Mixed-Effects Modeling To Analyze Different Grain-Sized Skill Models In An Intelligent Tutoring System
Student modeling and cognitive diagnostic assessment are important issues that need to be addressed for the development and successful application of intelligent tutoring systems (ITS). ITS needs the construction of complex models to represent the skills that students are using and their knowledge states, and practitioners want cognitively diagnostic information at a finer grained level.…
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Improving Robustness of MLLR Adaptation with Speaker-Clustered Regression Class Trees
We introduce a strategy for modeling speaker variability in speaker adaptation based on maximum likelihood linear regression (MLLR).
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Simultaneous Quantification of Perfusion and Permeability in the Prostate Using Dynamic Contrast-Enhanced Magnetic Resonance Imaging with an Inversion-Prepared Dual-Contrast Sequence
The aim of the present study was to quantify both perfusion and extravasation in the prostate to discriminate tumor from healthy tissue, which might be achieved by dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using a nonspecific low-molecular-weight contrast medium (CM).
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Isolines: efficient spatio-temporal data aggregation in sensor networks
This paper introduces an energy-efficient data collection technique that takes advantage of spatial and temporal data correlation for monitoring continuously changing conditions such as temperature, humidity, rain fall, radiation, substance concentrations, etc.
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Embracing interference in ad hoc networks using joint routing and scheduling with multiple packet reception
We present an approach that takes advantage of multi-packet reception (MPR) to reduce the negative effects of multiple access interference and therefore increase the capacity of an ad hoc network.
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Embracing interference in ad hoc networks using joint routing and scheduling with multiple packet reception
We present an approach that takes advantage of multi-packet reception (MPR) to reduce the negative effects of multiple access interference and therefore increase the capacity of an ad hoc network.
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Powers of 10: modeling complex information-seeking systems at multiple scales
New models of information-seeking support systems offer two advantages: they move us from prescientific conceptual frameworks about information seeking to more rigorous scientific theories and predictive models while, at the same time, expanding the kinds of things we study and develop.
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Learning by Reading: Normalizing complex linguistic structures onto a knowledge representation
This brief position paper illustrates the power of this approach in PARCs Bridge system through examples of textual inference.
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Predicate privacy in encryption systems
In this paper, we consider a new notion called predicate privacy, that is, the property that a token should not reveal information about the query predicate encoded in it.
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Holding on and letting go: facts, counterfactuals and before
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Chronic in Utero Cyclooxygenase Inhibition Alters PGE2-Regulated Ductus Arteriosus Contractile Pathways and Prevents Postnatal Closure
We used fetal mice and sheep to determine whether PGE2 has a role in the development of ductus contractility that is distinct from its function as a vasodilator.