The science behind Sudoku

Article Abstract:

The game of solving a Sudoku puzzle, which poses a number of intriguing mathematical problems with a host of challenging issues, is reviewed. A standard Sudoku is like an order-9 Latin square, differing only in its added requirement that each subgrid contain the numbers 1 through 9, but puzzle mavens have come up with an array of approaches to attacking Sudokus with entertaining variations on the game.

Analysis, Mathematical recreations, Sudoku puzzles

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Semiconductor subsidies: did the U.S. government spend more than $700 million to achieve a goal that might have been attained for much less?

Article Abstract:

The Semiconductor Manufacturing Technology (SEMATECH) consortium's aid to GCA Corporation, which ultimately failed, provides a variety of lessons about how consortia designed to improve the competitiveness of US high-technology industries should be organized and managed.

Semiconductor industry, Management, Industrial research, Cooperative industrial research, Cooperative research, GCA Corp.

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Science: how much is enough?

Article Abstract:

The collapse of the Soviet Union and slow economic growth are invalidating the assumption that scientific leadership leads to a better standard of living and economic success. However, scientific research that supports new industries should be funded.

Economic aspects, Column, Science and state, Science policy

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