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A MARKED difference between the public opinion situation facinginformation specialists in this war and that in 1917 is thefact that during the last twenty-five years radio has come ofage. Never before have governments had available for use suchan important instrument of propaganda. Has the OWI taken fulladvantage of its potentialities? Mr. Landry was asked to appraiseAmerica's use of this weapon since Pearl Harbor. For ten years the author has been observing American radio fromthe platform of the radio editorship of Variety. He has listenedto and analyzed thousands of radio broadcasts. At present heis director of program writing for CBS and also a member ofthe Writers War Board. 相似文献
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ROBERT LANNING 《Journal of historical sociology》1991,4(4):359-379
Abstract This essay examines the use of object lessons as a component of 19th century Ontario educational practice, and demonstrates their development to interactive lessons in moral and cultural observation. It is demonstrated that the laws of nature and society were perceived as parallel systems of order. The essay then demonstrates the use of these pedagogical forms in the management of classroom situations. 相似文献
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ECONOMIC EFFECTS OF CURRENCY UNIONS 总被引:3,自引:0,他引:3
We develop a new instrumental-variable (IV) approach to estimate the effects of different exchange rate regimes on bilateral outcomes. The basic idea is that the characteristics of the exchange rate between two countries are partially related to the independent decisions of these countries to peg—explicitly or de facto—to a third currency, notably that of a main anchor. This component of the exchange rate regime can be used as an IV in regressions of bilateral outcomes. We apply the methodology to study the economic effects of currency unions. The likelihood that two countries independently adopt the currency of the same anchor country is used as an instrument for whether they share a common currency. We find that sharing a common currency enhances trade, increases price comovements, and decreases the comovement of real gross domestic product shocks. ( JEL C3, F3, F4) 相似文献
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JAMES P. HOBERT GALIN L. JONES CHRISTIAN P. ROBERT 《Scandinavian Journal of Statistics》2006,33(1):37-51
Abstract. Let π denote an intractable probability distribution that we would like to explore. Suppose that we have a positive recurrent, irreducible Markov chain that satisfies a minorization condition and has π as its invariant measure. We provide a method of using simulations from the Markov chain to construct a statistical estimate of π from which it is straightforward to sample. We show that this estimate is 'strongly consistent' in the sense that the total variation distance between the estimate and π converges to 0 almost surely as the number of simulations grows. Moreover, we use some recently developed asymptotic results to provide guidance as to how much simulation is necessary. Draws from the estimate can be used to approximate features of π or as intelligent starting values for the original Markov chain. We illustrate our methods with two examples. 相似文献
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ROBERT J. MICHAELS 《Economic inquiry》1988,26(1):75-88
The consumption technology model of Lancaster and Becker is extended to include addictive activities. Assuming a utility function in which the individual places a premium on maintenance of self-esteem, the model generates empirically verified patterns of habituation, withdrawal, and the compulsive restarting of an abandoned habit. It is then applied to the analysis of public policies toward drug abuse. Their frequent ineffectiveness is shown to result from an unwarranted emphasis on deterring the addictive activity rather than on encouraging atceptable behavior. 相似文献