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The forecasting potential of complex models   总被引:2,自引:0,他引:2  
The nature and use of complex models for forecasting and policy simulation are analyzed on theoretical and empirical-performance grounds. The analysis suggests that while the accuracy of complex models in forecasting trends in such fields as economic and energy is, and will remain, undistinguished, complex models' special virtues of preserving counter-intuitive results and representing subsystem interdepedence could be used to better advantage than current practice permits. Suggestions for such improvements, through more diversified model structures, micro-process models in addition to the typical macro models, a mix of mechanically- and judgmentally-operated models, and the modeling of policy response, are reviewed.  相似文献   
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Book reviews     
A. L. Meiendorf, Optimizatsiya khozyaistvennykh reshenii: metod analiza prirashchenii. Series: Aktual'nye problemy sel'skogo khozyaistva. Moscow: ‘Ekonomika’, 1976.

Oliver H. Radkey, The Unknown Civil War in Soviet Russia. A Study of the Green Movement in the Tambov Region, 1920–21. Stanford, Calif.: Hoover Institution, 1976. xiv+457 pp. $12.95.

Roy and Zhores Medvedev, KhrushchevThe Years in Power. London: OUP, 1977. xi+198 pp. £3.95.

Daniel F. Calhoun, The United Front: the TUC and the Russians, 1923–1928. Cambridge: CUP, 1976. 450 pp. £10.50.

Gabriel Gorodetsky, The Precarious Truce. Anglo‐Soviet Relations 1924–27. Cambridge: CUP, 1977. 289 pp. £9.00.

Herbert S. Dinerstein, The Making of a Missile Crisis: October 1962. Baltimore and London: Johns Hopkins UP, 1976. 302 pp. $14.95.

Donald R. Kelley, Kenneth R. Stunkel, Richard R. Wescott, The Economic Superpowers and the Environment: The United States, The Soviet Union, and Japan. San Francisco: W. H. Freeman & Co., 1976. 335 pp.

Fred Singleton (ed.), Environmental Misuse in the Soviet Union. New York and London: Praeger Publishers, 1976. xvii+103 pp. $13.50. £8.80.

Peter H. Juviler, Revolutionary Law and Order. Politics and Social Change in the USSR. New York: The Free Press, and London: Collier MacMillan, 1976. xii+274 pp. £11.05.

Richard Szawlowski, The System of the International Organizations of the Communist Countries. Leyden: A. W. Sijthoff, 1976. 322 pp.

Jürg Meister, Soviet Warships of the Second World War. London: Macdonald & Jane, 1977. 348 pp. £7.95.  相似文献   

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State sector reform was an integral component of the radical economic and social policy changes enacted by New Zealand governments between 1984 and 1991. This reform replaced the traditional tenured public service with a contractual regime. Through a comparison with Denmark, it is shown that New Zealand's reforms were not unique. Similar reforms were enacted in Denmark. But contrary to what occurred in New Zealand, the Danish reforms had already begun in the 1960s, and have since been gradually expanded. The parallel contractual regimes introduced in the two countries are accounted for by an increasing demand among politicians to secure a civil service that is responsive to political executive demands. However, because of institutional differences and diverging regulatory regimes, the strategic approaches in the two countries have been different. Whereas the New Zealand approach was dominated by an appeal to a coherent and sophisticated body of theoretical knowledge, combined with strict formalization, the Danish strategy has been based on political bargaining with the civil service unions. In both cases the reforms rest on critical assumptions regarding their positive and negative implications.  相似文献   
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Participants in a specialelection held in the State of Mississippion April 17, 2001, voted overwhelminglyagainst changing the design of the state'sflag, which incorporates a symbol of theConfederacy. The determinants of voting onthe flag are analyzed and turnout rates inApril 2001 are compared with those forrecent gubernatorial and presidentialelections. We find that the flag votedivided Mississippians sharply along linesof race, class and political ideology. Akey empirical implication is that voterpositions in issue space tend to be morepolarized when political choices haveexpressive as opposed to instrumentalconsequences.  相似文献   
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