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The debate about the use of dedicated trains for shipping spent fuel and high level nuclear waste has been going on for the past 15 years. The nuclear industry and its regulatory agencies would like to consider the case closed. The recent passage of the Hazardous Materials Transportation Uniform Act of 1990, however, opens the door once more, giving the railroads and other proponents of dedicated trains another chance to present their case. This paper argues that earlier conclusions favoring regular trains over dedicated trains were based on incomplete cost and risk information and neglected other factors which are not technical, but social and institutional in nature. The paper finds that the additional cost of a dedicated system is lower than previously thought and concludes that it is a small price to pay for reduced public opposition and increased levels of trust.  相似文献   
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While radio is America's most abundant medium, its content is characterized more by sameness than by diversity. Stations find it more profitable to duplicate mass appeal programming formats than to program to minority tastes. Such rational business decisions come at the expense of the listening audience which is given few formats from which to choose. The regulatory system, which speaks to the value of program diversity, has been unsuccessful in creating effective incentives to foster radio diversity. The article suggests a novel approach to radio regulation that combines economic incentives with new methods for identifying audience preferences such that a profit-maximizing radio industry would serve more tastes than are presently served.An earlier version of this paper was presented to the Mass Communication and Society Division of the Association for Education in Journalism, Boston, August 1980.  相似文献   
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Book reviews     
Pride of Small Nations: The Caucasus and Post‐Soviet Disorder Suzanne Goldenberg London: Zed Books, 1994, xv, 233 pp, 1 map

The North Caucasus: Minorities at a Crossroads Helen Krag and Lars Funch Report of The Minority Rights Group International, 94/5, 45 pp (incl. map), 1994, £4.95

The Legacy of History in Russia and the New States of Eurasia. The International Politics of Eurasia Vol 1 Series editors, S. Frederick Starr (editor), Bruce Parrott and Karen Dawisha Armonk, New York: M. E. Sharpe, 1994, xiii, 328 pp, $49.95 hb, $19.95 pb

Central Asia Reader: The Rediscovery of History H. B. Paksoy (editor) Armonk, New York: M. E. Sharpe, 1994, ix + 206 pp $60 hb, $21.95 pb

National Identity and Ethnicity in Russia and the New States of Eurasia. The International Politics of Eurasia Vol 2 Roman Szporluk (editor) Series editors, Bruce Parrott and Karen Dawisha Armonk, New York: M. E. Sharpe, 1994, xiii, 328 pp, $49.95 hb, $19.95 pb

Muslim Communities Reemerge: Historical Perspectives on Nationality, Politics, and Opposition in the Former Soviet Union and Yugoslavia Andreas Kappeler, Gerhard Simon and Georg Brunner, editors of the German edition: Edward Allworth, editor English edition Durham, North Carolina: Duke University Press, 1994, Caroline Sawyer, trans., xiv, 365 pp, $54.95 hb, $24.95 pb

The Making of Iran's Islamic Revolution Mohsen M. Milani Boulder, CO: Westview Press, 1994, 268 pp

Torture and Modernity: Self, Society, and State in Modern Iran Darious M. Rejali Boulder, CO: Westview Press, 1994, 289 pp

China's Minorities: Integration and Modernization in the Twentieth Century Colin Mackerras Hong Kong and Oxford: Oxford University Press, 1994, viii, 341 pp, $79.00

High Tartary Owen Lattimore New York, Tokyo, London: Kodansha International, 386 pp, illus, £11.99

Turkestan Reunion Eleanor Holgate Lattimore New York, Tokyo, London: Kodansha International, 323 pp, illus, £10.99

Islamic Urban Studies: Historical Review and Perspectives Masashi Haneda and Toru Miura (editors) London: Kegan Paul International, 1995, 365 pp, index, biblio, £55  相似文献   

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The enforcement of the SMCRA in Oklahoma has led to improvements and transformations in the coal industry, state and federal regulatory agencies and the public. The catalyst for these changes was the federal takeover of inspection and enforcement of the SMCRA in Oklahoma with the state carrying on all other mining regulatory activities from 1984 through 1987. This pattern of cohabitation differed from that in Tennessee where OSM took over all enforcement of the SMCRA or that in states that enter into cooperative agreements to provide state regulation of coal mining on federal lands within the state. Cohabitation in Oklahoma produced a new, more positive attitude toward cooperative federalism by both federal and state regulatory bodies that might serve as a model for other states with OSM maintaining state agency support for policy objectives while allowing the state reasonable decisional discretion.  相似文献   
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