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341.
342.
Happy Birthday! If it is not your birthday today, it may well be the birthday of someone in your office, or in your class at school. Possibly, it is the birthday of two people in your office or your class. Just how big does a group have to be before its members are likely to share a birthday? Mario Cortina Borja and John Haigh explain the birthday problem. 相似文献
343.
This paper investigates the initial planning process for the transition of an organization from a R & D environment to an Operations environment. Using a developed transition life cycle model, the paper demonstrates a four step analysis of the management of the transition. Further, the paper suggests the utilization of existing methods for achieving a smooth transformation under various levels of technical, political, cultural, managerial, and economic uncertainties. Finally, the paper lists possible courses of action and considerations for the transition once the initial planning stage is completed. The concepts herein were used to begin planning the change, from R & D to Operations, of the Space Shuttle Program at NASA. 相似文献
344.
This study examines the relationship between the ratings made of a set of smiling and neutral expressions and the facial features which influence these ratings. Judges were shown forty real face photographs of smile and neutral expressions and forty line drawings derived from these photographs and were asked to rate the degree of smiling behavior of each expression. The line drawings of the face were generated by a microcomputer which utilizes a mathematical model to quantify facial expression. Twelve facial measures were generated by the computer. Significant differences were found between the ratings of smile and neutral expressions. The Mode of Presentation did not contribute significantly to the ratings. Using the facial measures as separate covariates, five mouth measures and one eye measure were found to discriminate significantly between the ratings made on smile and neutral expressions. When entered as simultaneous covariates, only four mouth measures contributed to the differences found in the expression ratings. Future research projects which may utilise the computer model are discussedThe research reported in this paper was conducted in the Department of Psychology, University of Adelaide. The authors would like to thank Ulana Sudomlak for her assistance in the gathering and recording of the data for this project, and the reviewers for their helpful comments on an earlier version of this paper. 相似文献
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John E. Roemer 《Social Choice and Welfare》1997,14(4):479-502
A political–economic environment is studied in which two parties, representing different constituencies of citizens, compete
over a proportional tax rate to be levied on private endowments, to finance a public good. Although parties know the distribution
of citizen traits (preferences and endowments), they are uncertain about the distribution of traits among the citizens who
will turn up at the polls. This uncertainty engenders an endogenously derived function π(t
1, t
2) giving the probability that any one tax policy t
1 will defeat another t
2 in the election. Equilibrium existence theorems are proved, and the nature of equilibrium is compared with the equilibrium
that exists when Downsian parties (ones whose objective is to maximize the probability of victory) face uncertainty. Both
constituency-representing parties and uncertainty are needed to generate equilibria in which parties propose different policies.
Received: 4 April 1995/Accepted: 2 April 1996 相似文献
347.
John M. Watts 《Theory and Society》1989,18(5):757-758
Contributors to this issue 相似文献
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