A hundred scientists attended a conference about this important little planet. It was held at the Field Museum in Chicago, Illinois, and was sponsored by the Museum, the Lunar and Planetary Institute, and the National Aeronautics and Space Administration. Mariner 10, the only space mission to Mercury, flew by it three times in 1974 and 1975. Reworking the data in light of a better understanding...

A central tenet of constructivist models of conceptual development is that children's initial conceptual level constrains how they make sense of new evidence and thus whether exposure to evidence will prompt conceptual change. Yet little experimental evidence directly examines this claim for the case of sustained, fundamental conceptual achievements. The present study combined scaling and exper...

this book makes abundantly clear the sustained freshness of snyder path-breaking and dauntingly original work, which has long set the agenda for the systematic explanation of foreign policy decisions. thevery thoughtful essays prepared for the present volume demonstrate dramatically the continued centrality of the issues snyder and his associates raised more than 40 years ago. prescient in its ...

A cycle of innovation and standardization The setting is the Internet; the time is a moment ripe for improvement. In a typical scenario innovative Ôrunning codeÕ will be proposed, after which a trial period ensues. There may be a competition with similar proposals (and certainly a competition with the established ideas), along with improvements based on trial results. After some period, the mod...