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Warren Shapiro 《Oceania; a journal devoted to the study of the native peoples of Australia, New Guinea, and the Islands of the Pacific》2009,79(2):177-178
ABSTRACT The widespread existence of men's houses in Highland New Guinea raises the question as to the existence of the nuclear family in this area. We know that in some cases (e.g. the ‘Sambiah’) a married couple co‐reside, despite the fear of the woman's alleged pollution. In others there may be symbolic isolation of the nuclear family, e.g. by subclassification in kin terminology. The matter is especially important in current kinship studies, wherein Marxist and ‘radical’ feminist models of sociality, which tend to see the nuclear family as a sort of Western aberration, abound. 相似文献
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The diffusion of new product or technical innovation over space is here modeled as an event‐based process in which the likelihood of the next adopter being in region r is influenced by two factors: (i) the potential interactions of individuals in r with current adopters in neighboring regions, and (ii) all other attributes of individuals in r that may influence their adoption propensity. The first factor is characterized by a logit model reflecting the likelihood of adoption due to spatial contacts with previous adopters, and the second by a logit model reflecting the likelihood of adoption due to other intrinsic effects. The resulting spatial diffusion process is then assumed to be driven by a probabilistic mixture of the two. A number of formal properties of this model are analyzed, including its asymptotic behavior. But the main analytical focus is on statistical estimation of parameters. Here it is shown that standard maximum‐likelihood estimates require large sample sizes to achieve reasonable results. Two estimation approaches are developed which yield more sensible results for small sample sizes. These results are applied to a small data set involving the adoption of a new Internet grocery‐shopping service by consumers in the Philadelphia metropolitan area. 相似文献
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