In recent decades, there have been strong calls for reforms in mathematics education, and in particular for changes in classroom practices. Teachers have been encouraged to organize instruction so that students participate in more collaborative, discussion-based activities with an eye to supporting a community of learners, rather than a set of individuals working on mathematics (NCTM, 1991). Or...

????. Figure 1. Elevation profiles of a crater over a pure ice half-space and heat flow of 1 mW m, after 100 Myr. Surface temperature is indicated in the legend box. 1798.pdf 44th Lunar and Planetary Science Conference (2013)

About 2~ years ago, ARPA initiated a new program in Machine Translation (MT). Three projects were funded: CANI)II)E, built by IBM in New York; I,INGSTA'I~, built by Dragon Systems in Boston; and PAN(;I,()SS, a col laborat ion of the Computing Research Laboratory at New Mexico State University, the Center for Machine Translation at Carnegie Mellon University, and the Information Sciences Institu...