This is an edited text of the sixth John Vincent Memorial Lecture delivered by Lawrence Freedman at the University of Keele on 8 May 1998. Against the background of Soviet military power in Europe in the 1970s, the author explores in the first place the question of the utility of force in circumstances where there is no immediate danger of war, and concludes with a discussion of its contemporary relevance for the armed forces of the Atlantic alliance. 相似文献
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Most published measures of spatial autocorrelation (SA) can be recast as a (normalized) cross-product statistic that indexes the degree of relationship between corresponding entries from two matrices—one specifying the spatial connections among a set of n locations, and the other reflecting a very explicit definition of similarity between the set of values on some variable x realized over the n locations. We first give a very brief sketch of the basic cross-product approach to the evaluation of SA, and then generalize this strategy to include less restrictive specifications for the notion of similarity between the values on x. Using constrained multiple regression, the characterization of variate similarity basic to any assessment of SA can itself be framed according to the information present in the measure of spatial separation. These extensions obviate the inherent arbitrariness in how SA is usually evaluated, which now results from the requirement of a very restrictive definition of variate similarity before a cross-product index can be obtained. 相似文献