Vincent Aleven Intelligent tutoring systems (ITS) are highly effective in supporting student learning, but are difficult to build. The Cognitive Tutor Authoring Tools (CTAT) project started over 6 years ago with the goals of making it easier for experienced programmers, and possible for non-programmers to create an ITS. CTAT supports tutor building through programming by demonstration, an appro...

This is a joint work with P.Bressler, R. Nest and B. Tsygan. We will discuss problems in which formal deformations of etale groupoids and gerbes arise and give an explicit description of the differential graded Lie algebra which controls this deformation theory. • Maxim Kontsevich (IHES) Title: On the degeneration of the Hodge to de Rham spectral sequence. Abstract: Several years ago I proposed...

Abstract Sue Bowler talks to organizers Carole Mundell, Cathryn Mitchell and Patricia Schady about the first fully virtual National Astronomy Meeting in July

the end of cold war created a unique opportunity for both the arabs and israelis to end their animosity and for the united states to play an important role to bring them to peace negotiations. therefore, during the 1990s, the u.s. facilitated several rounds of talks between syria and israel, but the negotiations complicated gradually. the talks were stalled over the fact that israel did not wan...

a look at contemporary persian poetry, currents in persian poetry in 20th century this book is a historical survey of literature though the writer has tried to distance himself from ancient approaches and to apply a modern look of analysis, critique and stylistics. in the first chapter the methodology is discussed followed by the second chapter which talks of text and metatext and the relations...

this research with explaining of concept of reason and distending with knowledge talks about ethical complementarity of human and relation between that concept and growth of reason with emphasis on ghorar-al-hekam book of imam ali. in this article, we will receive to depth relation between reason and ethic on imam ali’s speeches and ethic without reason isn’t complete and reason without ethic c...

The stated goal of the conference was to build on the great success of applicable harmonic analysis in the last decade by bringing together first-rate senior experts along with promising young researchers in the theory and application of wavelet analysis, non-linear approximation, computational fluid dynamics and other applications with an emphasis on a combination of theoretical development wi...

The purpose of this article is to summarize the experimental status of spin physics based on the material presented at the Third Circum-Pan-Pacific Symposium on High Energy Spin Physics. A total of 12 experimental talks covering recent results and future plans at DESY, JLab, SLAC, and RHIC-spin were presented at this Symposium. These talks successfully convey the sense of excitement in this fie...

We describe the prototype QA system built by MIRACLE group, a group composed by three Madrid universities and the spin-off, DAEDALUS. The system is an elaboration of our last year system with several improvements in question analysis and NERC components. We submitted two runs for the Spanish runs with different strategies to use NE in passage selection and answer ranking. Results show that a re...