Community perspective: Widening inequality hurts us all

The former Secretary of Labor discusses the causes and consequences of our nation's rising inequality.Income distribution

Understanding the negative thermal expansion in planar graphite–metal composites

The addition of graphitic fibers and flakes as fillers is commonly used to control the thermal expansion of metals. Sintered metal matrix composites with a planar distribution of graphite flakes show a low or negative thermal expansion coefficient perpendicular to the orientation plane of the graphite (z-CTE). Since the metal matrix has a positive isotropic expansion and graphite has a high z-CTE, this effect cannot be explained by a simple model of stapled metal–graphite layers. Instead, a mechanical interaction between graphite and matrix must be considered. With neutron scattering measurements, we show that there is little or no strain of the graphite flakes caused by the matrix, which can be explained by the high modulus of graphite. Instead, we suggest that a macroscopic crumpling of the flakes is responsible for the low z-CTE of the composite. The crumpled flakes are thicker at low temperature and get stretched and flattened by the expanding matrix at high temperature, explaining the reduction in the thermal expansion across the orientation plane

The Future of Learning

As part of UMass Boston’s recent celebration to mark the inauguration of Chancellor Michael F. Collins, M.D., the Division of Corporate, Continuing and Distance Education (CCDE) hosted a “virtual symposium” featuring Robert B. Reich. Between April 24 and May 8, CCDE posted a streaming video and a downloadable audio file of a presentation that Professor Reich had delivered on April 11, 2006 at the national conference of the University Continuing Education Association. This talk was supplemented, on May 3, by a live teleconferencing Q&A session with Professor Reich and about fifty UMass Boston graduate students

The Future of Learning

As part of UMass Boston’s recent celebration to mark the inauguration of Chancellor Michael F. Collins, M.D., the Division of Corporate, Continuing and Distance Education (CCDE) hosted a “virtual symposium” featuring Robert B. Reich. Between April 24 and May 8, CCDE posted a streaming video and a downloadable audio file of a presentation that Professor Reich had delivered on April 11, 2006 at the national conference of the University Continuing Education Association. This talk was supplemented, on May 3, by a live teleconferencing Q&A session with Professor Reich and about fifty UMass Boston graduate students. This article originally appeared in a 2006 issue of the New England Journal of Public Policy (Volume 21, Issue 1): http://scholarworks.umb.edu/nejpp/vol21/iss1

Bailout: A Comparative Study in Law and Industrial Structure

Economies are like bicycles: the faster they move, the better they maintain their balance. Changes in consumer preferences, technologies, international competition, and the availability of natural resources all require economies to reallocate capital and labor to newer and more profitable uses. Societies that redeploy their capital and labor more quickly and efficiently than others are apt to experience faster growth and greater improvements in productivity

Solving Social Crises by Commissions

\u27\u27The report of the Commissioners, said Washington in his sixth address to Congress, \u27· marks their firmness and abilities and must unite all virtuous men. The first commission to deal with a social crisis in America had recommended that the President send troops into western Pennsylvania to end the Whiskey Rebellion. As a cartoon of the day put it, sending 15,000 troops into the Allegheny and Monongahela River valleys against a few farmers for the collection of such a small tax was like swatting flies with a meat axe. But social order was at stake; and that commission, like the.scores of crisis commissions which were to follow it, provided the chief executive with a strategy for restoring the commonweal while assuring the public that the problem could, in fact, be handled