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Suppose that social welfare function f satisfies the Pareto condition and has complete and transitive values. On a domain satisfying the free quadruple property, if the outcome set X has m< outcomes, then the set of pairs of distinct alternatives on which f satisfies both independence and nondictatorship contains at most the fraction 2/m of all pairs. On a domain satisfying the free six-tuple property, if X is a subset of Euclidean space then the set of pairs on which f satisfies both independence and nondictatorship has Lebesgue measure zero.Campbell's research was financed by the National Science Foundation, grant SES 9209039. 相似文献
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Touristic authenticity,touristic angst,and modern reality 总被引:1,自引:0,他引:1
Donald L. Redfoot 《Qualitative sociology》1984,7(4):291-309
The tourist has become the symbol of a peculiarly modern type of inauthenticity. This paper explores the criticisms that have been directed at the reality experiences of the tourist. In so doing, the following inexhaustive typology of touristic realities is developed: 1) the first-order or true tourist, 2) the second-order or Angst-ridden tourist, 3( the third-order or anthropological tourist, and 4) the fourth-order or spiritual tourist. Each of these types represents a progressively more intense search for reality through travel. Each is, however, criticized for participating in its own form of inauthenticity.After exploring the reality experiences and criticisms of each of these travellers, the paper turns the tables on the cultured despisers of tourism to argue that perhaps the lowly first-order tourist is not so inauthentic after all. True, this traveller may not be having a real heroic adventure, but such is not the goal. Rather, the reality experienced by the first-order tourist is a pleasurable liberation from the normal concerns of everyday life which simultaneously reaffirms commitment to that reality. Quite frequently the first-order tourist is less concerned about having a real experience in the visited place than in experiencing family and friendship relationships-relationships completely ignored by the anti-touristic tourists in their search for authenticity in someone else's reality.The author would like to thank Peter L. Berger, Harry C. Bredemeier, Warren I. Susman, and M. Kathy Kenyon for their comments and suggestions on earlier versions of this paper. This research was supported in part by NIMH grant no. 5 T32 NH14660. 相似文献
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Carol K. Sigelman Susan F. Elias-Burger Pamela Danker-Brown Donald L. Burger 《Journal of Nonverbal Behavior》1982,6(4):259-264
Sex differences in three communication behaviors consistently found to be more common among females than males — smiling, gazing at one's partner, and sentence complexity — were examined through analysis of interviews with 78 institutionalized mentally retarded adults. While females were significantly more likely than males to smile or laugh, and tended to use longer, more complex sentences, the commonly observed sex difference in gazing failed to generalize to a retarded sample. These findings clarify limits on the generalizability of sex differences beyond college students and other normal populations.This research was partially supported by a grant to the Texas Tech University Research and Training Center in Mental Retardation from the Rehabilitation Services Administration, Department of Health Education, and Welfare. 相似文献
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An analytical framework is presented to study the cost/benefit tradeoffs of alternative internal control scenarios designed to ensure quality of outputs from information systems. A mathematical model is used to evaluate the impact that various alternatives have on system performance and cost. The model can be used to compare the benefits gained from enhanced processing with those arising from more effective internal control procedures. Model variables under the control of system designers include placement and effectiveness of internal control procedures, cost and quality of processing activities, both manual and computerized, and cost and quality of correction procedures. The model incorporates a penalty cost incurred by failure to detect and correct errors. The analytical process is illustrated through application to a specific information system. 相似文献
18.
The large differences in youth smoking behavior across ethnic and racial groups are often overlooked in debates about prevention. This study examines how the determinants of the onset of smoking vary by race and ethnicity. Academic success is strongly associated with lower smoking rates among white youth, but this is not as true for Hispanics and African-Americans. Cultural assimilation may be an important determinant of smoking for Hispanics. Price increases do not appear to reduce smoking onset among white youth, but the results provide some support that higher prices will reduce smoking among Hispanic and African-American youth. 相似文献
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Donald B. Rubin 《AStA Advances in Statistical Analysis》2006,90(4):501-513
This article advocates the following perspective: When confronting a scientific problem, the field of statistics enters by viewing the problem as one where the scientific answer could be calculated if some missing data, hypothetical or real, were available. Thus, statistical effort should be devoted to three steps:
- formulate the missing data that would allow this calculation,
- stochastically fill in these missing data, and
- do the calculations as if the filled-in data were available.
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Population and Environment - 相似文献